---
_id: '9623'
abstract:
- lang: eng
text: "Cytoplasmic reorganizations are essential for morphogenesis. In large cells
like oocytes, these reorganizations become crucial in patterning the oocyte for
later stages of embryonic development. Ascidians oocytes reorganize their cytoplasm
(ooplasm) in a spectacular manner. Ooplasmic reorganization is initiated at fertilization
with the contraction of the actomyosin cortex along the animal-vegetal axis of
the oocyte, driving the accumulation of cortical endoplasmic reticulum (cER),
maternal mRNAs associated to it and a mitochondria-rich subcortical layer – the
myoplasm – in a region of the vegetal pole termed contraction pole (CP). Here
we have used the species Phallusia mammillata to investigate the changes in cell
shape that accompany these reorganizations and the mechanochemical mechanisms
underlining CP formation.\r\nWe report that the length of the animal-vegetal (AV)
axis oscillates upon fertilization: it first undergoes a cycle of fast elongation-lengthening
followed by a slow expansion of mainly the vegetal pole (VP) of the cell. We show
that the fast oscillation corresponds to a dynamic polarization of the actin cortex
as a result of a fertilization-induced increase in cortical tension in the oocyte
that triggers a rupture of the cortex at the animal pole and the establishment
of vegetal-directed cortical flows. These flows are responsible for the vegetal
accumulation of actin causing the VP to flatten. \r\nWe find that the slow expansion
of the VP, leading to CP formation, correlates with a relaxation of the vegetal
cortex and that the myoplasm plays a role in the expansion. We show that the myoplasm
is a solid-like layer that buckles under compression forces arising from the contracting
actin cortex at the VP. Straightening of the myoplasm when actin flows stops,
facilitates the expansion of the VP and the CP. Altogether, our results present
a previously unrecognized role for the myoplasm in ascidian ooplasmic segregation.
\r\n"
acknowledged_ssus:
- _id: Bio
- _id: EM-Fac
- _id: NanoFab
- _id: M-Shop
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Silvia
full_name: Caballero Mancebo, Silvia
id: 2F1E1758-F248-11E8-B48F-1D18A9856A87
last_name: Caballero Mancebo
orcid: 0000-0002-5223-3346
citation:
ama: Caballero Mancebo S. Fertilization-induced deformations are controlled by the
actin cortex and a mitochondria-rich subcortical layer in ascidian oocytes. 2021.
doi:10.15479/at:ista:9623
apa: Caballero Mancebo, S. (2021). Fertilization-induced deformations are controlled
by the actin cortex and a mitochondria-rich subcortical layer in ascidian oocytes.
Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:9623
chicago: Caballero Mancebo, Silvia. “Fertilization-Induced Deformations Are Controlled
by the Actin Cortex and a Mitochondria-Rich Subcortical Layer in Ascidian Oocytes.”
Institute of Science and Technology Austria, 2021. https://doi.org/10.15479/at:ista:9623.
ieee: S. Caballero Mancebo, “Fertilization-induced deformations are controlled by
the actin cortex and a mitochondria-rich subcortical layer in ascidian oocytes,”
Institute of Science and Technology Austria, 2021.
ista: Caballero Mancebo S. 2021. Fertilization-induced deformations are controlled
by the actin cortex and a mitochondria-rich subcortical layer in ascidian oocytes.
Institute of Science and Technology Austria.
mla: Caballero Mancebo, Silvia. Fertilization-Induced Deformations Are Controlled
by the Actin Cortex and a Mitochondria-Rich Subcortical Layer in Ascidian Oocytes.
Institute of Science and Technology Austria, 2021, doi:10.15479/at:ista:9623.
short: S. Caballero Mancebo, Fertilization-Induced Deformations Are Controlled by
the Actin Cortex and a Mitochondria-Rich Subcortical Layer in Ascidian Oocytes,
Institute of Science and Technology Austria, 2021.
date_created: 2021-07-01T14:50:17Z
date_published: 2021-07-01T00:00:00Z
date_updated: 2023-09-07T13:33:27Z
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: CaHe
doi: 10.15479/at:ista:9623
file:
- access_level: closed
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date_created: 2021-07-01T14:48:54Z
date_updated: 2022-07-02T22:30:06Z
embargo_to: open_access
file_id: '9624'
file_name: PhDThesis_SCM.docx
file_size: 131946790
relation: source_file
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checksum: dd4d78962ea94ad95e97ca7d9af08f4b
content_type: application/pdf
creator: scaballe
date_created: 2021-07-01T14:46:25Z
date_updated: 2022-07-02T22:30:06Z
embargo: 2022-07-01
file_id: '9625'
file_name: PhDThesis_SCM.pdf
file_size: 17094958
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file_date_updated: 2022-07-02T22:30:06Z
has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/4.0/
month: '07'
oa: 1
oa_version: Published Version
page: '111'
publication_identifier:
isbn:
- 978-3-99078-012-1
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '9750'
relation: part_of_dissertation
status: public
- id: '9006'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Carl-Philipp J
full_name: Heisenberg, Carl-Philipp J
id: 39427864-F248-11E8-B48F-1D18A9856A87
last_name: Heisenberg
orcid: 0000-0002-0912-4566
title: Fertilization-induced deformations are controlled by the actin cortex and a
mitochondria-rich subcortical layer in ascidian oocytes
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
---
_id: '9006'
abstract:
- lang: eng
text: Cytoplasm is a gel-like crowded environment composed of various macromolecules,
organelles, cytoskeletal networks, and cytosol. The structure of the cytoplasm
is highly organized and heterogeneous due to the crowding of its constituents
and their effective compartmentalization. In such an environment, the diffusive
dynamics of the molecules are restricted, an effect that is further amplified
by clustering and anchoring of molecules. Despite the crowded nature of the cytoplasm
at the microscopic scale, large-scale reorganization of the cytoplasm is essential
for important cellular functions, such as cell division and polarization. How
such mesoscale reorganization of the cytoplasm is achieved, especially for large
cells such as oocytes or syncytial tissues that can span hundreds of micrometers
in size, is only beginning to be understood. In this review, we will discuss recent
advances in elucidating the molecular, cellular, and biophysical mechanisms by
which the cytoskeleton drives cytoplasmic reorganization across different scales,
structures, and species.
acknowledgement: We would like to thank Justine Renno for illustrations and Edouard
Hannezo and members of the Heisenberg group for their comments on previous versions
of the manuscript.
article_processing_charge: No
article_type: original
author:
- first_name: Shayan
full_name: Shamipour, Shayan
id: 40B34FE2-F248-11E8-B48F-1D18A9856A87
last_name: Shamipour
- first_name: Silvia
full_name: Caballero Mancebo, Silvia
id: 2F1E1758-F248-11E8-B48F-1D18A9856A87
last_name: Caballero Mancebo
orcid: 0000-0002-5223-3346
- first_name: Carl-Philipp J
full_name: Heisenberg, Carl-Philipp J
id: 39427864-F248-11E8-B48F-1D18A9856A87
last_name: Heisenberg
orcid: 0000-0002-0912-4566
citation:
ama: Shamipour S, Caballero Mancebo S, Heisenberg C-PJ. Cytoplasm’s got moves. Developmental
Cell. 2021;56(2):P213-226. doi:10.1016/j.devcel.2020.12.002
apa: Shamipour, S., Caballero Mancebo, S., & Heisenberg, C.-P. J. (2021). Cytoplasm’s
got moves. Developmental Cell. Elsevier. https://doi.org/10.1016/j.devcel.2020.12.002
chicago: Shamipour, Shayan, Silvia Caballero Mancebo, and Carl-Philipp J Heisenberg.
“Cytoplasm’s Got Moves.” Developmental Cell. Elsevier, 2021. https://doi.org/10.1016/j.devcel.2020.12.002.
ieee: S. Shamipour, S. Caballero Mancebo, and C.-P. J. Heisenberg, “Cytoplasm’s
got moves,” Developmental Cell, vol. 56, no. 2. Elsevier, pp. P213-226,
2021.
ista: Shamipour S, Caballero Mancebo S, Heisenberg C-PJ. 2021. Cytoplasm’s got moves.
Developmental Cell. 56(2), P213-226.
mla: Shamipour, Shayan, et al. “Cytoplasm’s Got Moves.” Developmental Cell,
vol. 56, no. 2, Elsevier, 2021, pp. P213-226, doi:10.1016/j.devcel.2020.12.002.
short: S. Shamipour, S. Caballero Mancebo, C.-P.J. Heisenberg, Developmental Cell
56 (2021) P213-226.
date_created: 2021-01-17T23:01:10Z
date_published: 2021-01-25T00:00:00Z
date_updated: 2024-03-28T23:30:19Z
day: '25'
department:
- _id: CaHe
doi: 10.1016/j.devcel.2020.12.002
external_id:
isi:
- '000613273900009'
pmid:
- '33321104'
intvolume: ' 56'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1016/j.devcel.2020.12.002
month: '01'
oa: 1
oa_version: Published Version
page: P213-226
pmid: 1
publication: Developmental Cell
publication_identifier:
eissn:
- '18781551'
issn:
- '15345807'
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
record:
- id: '9623'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Cytoplasm's got moves
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 56
year: '2021'
...
---
_id: '9429'
abstract:
- lang: eng
text: De novo loss of function mutations in the ubiquitin ligase-encoding gene Cullin3
lead to autism spectrum disorder (ASD). In mouse, constitutive haploinsufficiency
leads to motor coordination deficits as well as ASD-relevant social and cognitive
impairments. However, induction of Cul3 haploinsufficiency later in life does
not lead to ASD-relevant behaviors, pointing to an important role of Cul3 during
a critical developmental window. Here we show that Cul3 is essential to regulate
neuronal migration and, therefore, constitutive Cul3 heterozygous mutant mice
display cortical lamination abnormalities. At the molecular level, we found that
Cul3 controls neuronal migration by tightly regulating the amount of Plastin3
(Pls3), a previously unrecognized player of neural migration. Furthermore, we
found that Pls3 cell-autonomously regulates cell migration by regulating actin
cytoskeleton organization, and its levels are inversely proportional to neural
migration speed. Finally, we provide evidence that cellular phenotypes associated
with autism-linked gene haploinsufficiency can be rescued by transcriptional activation
of the intact allele in vitro, offering a proof of concept for a potential therapeutic
approach for ASDs.
acknowledged_ssus:
- _id: PreCl
acknowledgement: We thank A. Coll Manzano, F. Freeman, M. Ladron de Guevara, and A.
Ç. Yahya for technical assistance, S. Deixler, A. Lepold, and A. Schlerka for the
management of our animal colony, as well as M. Schunn and the Preclinical Facility
team for technical assistance. We thank K. Heesom and her team at the University
of Bristol Proteomics Facility for the proteomics sample preparation, data generation,
and analysis support. We thank Y. B. Simon for kindly providing the plasmid for
lentiviral labeling. Further, we thank M. Sixt for his advice regarding cell migration
and the fruitful discussions. This work was supported by the ISTPlus postdoctoral
fellowship (Grant Agreement No. 754411) to B.B., by the European Union’s Horizon
2020 research and innovation program (ERC) grant 715508 (REVERSEAUTISM), and by
the Austrian Science Fund (FWF) to G.N. (DK W1232-B24 and SFB F7807-B) and to J.G.D
(I3600-B27).
article_number: '3058'
article_processing_charge: No
article_type: original
author:
- first_name: Jasmin
full_name: Morandell, Jasmin
id: 4739D480-F248-11E8-B48F-1D18A9856A87
last_name: Morandell
- first_name: Lena A
full_name: Schwarz, Lena A
id: 29A8453C-F248-11E8-B48F-1D18A9856A87
last_name: Schwarz
- first_name: Bernadette
full_name: Basilico, Bernadette
id: 36035796-5ACA-11E9-A75E-7AF2E5697425
last_name: Basilico
orcid: 0000-0003-1843-3173
- first_name: Saren
full_name: Tasciyan, Saren
id: 4323B49C-F248-11E8-B48F-1D18A9856A87
last_name: Tasciyan
orcid: 0000-0003-1671-393X
- first_name: Georgi A
full_name: Dimchev, Georgi A
id: 38C393BE-F248-11E8-B48F-1D18A9856A87
last_name: Dimchev
orcid: 0000-0001-8370-6161
- first_name: Armel
full_name: Nicolas, Armel
id: 2A103192-F248-11E8-B48F-1D18A9856A87
last_name: Nicolas
- first_name: Christoph M
full_name: Sommer, Christoph M
id: 4DF26D8C-F248-11E8-B48F-1D18A9856A87
last_name: Sommer
orcid: 0000-0003-1216-9105
- first_name: Caroline
full_name: Kreuzinger, Caroline
id: 382077BA-F248-11E8-B48F-1D18A9856A87
last_name: Kreuzinger
- first_name: Christoph
full_name: Dotter, Christoph
id: 4C66542E-F248-11E8-B48F-1D18A9856A87
last_name: Dotter
orcid: 0000-0002-9033-9096
- first_name: Lisa
full_name: Knaus, Lisa
id: 3B2ABCF4-F248-11E8-B48F-1D18A9856A87
last_name: Knaus
- first_name: Zoe
full_name: Dobler, Zoe
id: D23090A2-9057-11EA-883A-A8396FC7A38F
last_name: Dobler
- first_name: Emanuele
full_name: Cacci, Emanuele
last_name: Cacci
- first_name: Florian KM
full_name: Schur, Florian KM
id: 48AD8942-F248-11E8-B48F-1D18A9856A87
last_name: Schur
orcid: 0000-0003-4790-8078
- first_name: Johann G
full_name: Danzl, Johann G
id: 42EFD3B6-F248-11E8-B48F-1D18A9856A87
last_name: Danzl
orcid: 0000-0001-8559-3973
- first_name: Gaia
full_name: Novarino, Gaia
id: 3E57A680-F248-11E8-B48F-1D18A9856A87
last_name: Novarino
orcid: 0000-0002-7673-7178
citation:
ama: Morandell J, Schwarz LA, Basilico B, et al. Cul3 regulates cytoskeleton protein
homeostasis and cell migration during a critical window of brain development.
Nature Communications. 2021;12(1). doi:10.1038/s41467-021-23123-x
apa: Morandell, J., Schwarz, L. A., Basilico, B., Tasciyan, S., Dimchev, G. A.,
Nicolas, A., … Novarino, G. (2021). Cul3 regulates cytoskeleton protein homeostasis
and cell migration during a critical window of brain development. Nature Communications.
Springer Nature. https://doi.org/10.1038/s41467-021-23123-x
chicago: Morandell, Jasmin, Lena A Schwarz, Bernadette Basilico, Saren Tasciyan,
Georgi A Dimchev, Armel Nicolas, Christoph M Sommer, et al. “Cul3 Regulates Cytoskeleton
Protein Homeostasis and Cell Migration during a Critical Window of Brain Development.”
Nature Communications. Springer Nature, 2021. https://doi.org/10.1038/s41467-021-23123-x.
ieee: J. Morandell et al., “Cul3 regulates cytoskeleton protein homeostasis
and cell migration during a critical window of brain development,” Nature Communications,
vol. 12, no. 1. Springer Nature, 2021.
ista: Morandell J, Schwarz LA, Basilico B, Tasciyan S, Dimchev GA, Nicolas A, Sommer
CM, Kreuzinger C, Dotter C, Knaus L, Dobler Z, Cacci E, Schur FK, Danzl JG, Novarino
G. 2021. Cul3 regulates cytoskeleton protein homeostasis and cell migration during
a critical window of brain development. Nature Communications. 12(1), 3058.
mla: Morandell, Jasmin, et al. “Cul3 Regulates Cytoskeleton Protein Homeostasis
and Cell Migration during a Critical Window of Brain Development.” Nature Communications,
vol. 12, no. 1, 3058, Springer Nature, 2021, doi:10.1038/s41467-021-23123-x.
short: J. Morandell, L.A. Schwarz, B. Basilico, S. Tasciyan, G.A. Dimchev, A. Nicolas,
C.M. Sommer, C. Kreuzinger, C. Dotter, L. Knaus, Z. Dobler, E. Cacci, F.K. Schur,
J.G. Danzl, G. Novarino, Nature Communications 12 (2021).
date_created: 2021-05-28T11:49:46Z
date_published: 2021-05-24T00:00:00Z
date_updated: 2024-03-28T23:30:23Z
day: '24'
ddc:
- '572'
department:
- _id: GaNo
- _id: JoDa
- _id: FlSc
- _id: MiSi
- _id: LifeSc
- _id: Bio
doi: 10.1038/s41467-021-23123-x
ec_funded: 1
external_id:
isi:
- '000658769900010'
file:
- access_level: open_access
checksum: 337e0f7959c35ec959984cacdcb472ba
content_type: application/pdf
creator: kschuh
date_created: 2021-05-28T12:39:43Z
date_updated: 2021-05-28T12:39:43Z
file_id: '9430'
file_name: 2021_NatureCommunications_Morandell.pdf
file_size: 9358599
relation: main_file
success: 1
file_date_updated: 2021-05-28T12:39:43Z
has_accepted_license: '1'
intvolume: ' 12'
isi: 1
issue: '1'
keyword:
- General Biochemistry
- Genetics and Molecular Biology
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 25444568-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715508'
name: Probing the Reversibility of Autism Spectrum Disorders by Employing in vivo
and in vitro Models
- _id: 2548AE96-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: W1232-B24
name: Molecular Drug Targets
- _id: 05A0D778-7A3F-11EA-A408-12923DDC885E
grant_number: F07807
name: Neural stem cells in autism and epilepsy
- _id: 265CB4D0-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03600
name: Optical control of synaptic function via adhesion molecules
publication: Nature Communications
publication_identifier:
eissn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: press_release
url: https://ist.ac.at/en/news/defective-gene-slows-down-brain-cells/
record:
- id: '7800'
relation: earlier_version
status: public
- id: '12401'
relation: dissertation_contains
status: public
status: public
title: Cul3 regulates cytoskeleton protein homeostasis and cell migration during a
critical window of brain development
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 12
year: '2021'
...
---
_id: '10058'
abstract:
- lang: eng
text: 'Quantum information and computation has become a vast field paved with opportunities
for researchers and investors. As large multinational companies and international
funds are heavily investing in quantum technologies it is still a question which
platform is best suited for the task of realizing a scalable quantum processor.
In this work we investigate hole spins in Ge quantum wells. These hold great promise
as they possess several favorable properties: a small effective mass, a strong
spin-orbit coupling, long relaxation time and an inherent immunity to hyperfine
noise. All these characteristics helped Ge hole spin qubits to evolve from a single
qubit to a fully entangled four qubit processor in only 3 years. Here, we investigated
a qubit approach leveraging the large out-of-plane g-factors of heavy hole states
in Ge quantum dots. We found this qubit to be reproducibly operable at extremely
low magnetic field and at large speeds while maintaining coherence. This was possible
because large differences of g-factors in adjacent dots can be achieved in the
out-of-plane direction. In the in-plane direction the small g-factors, on the
other hand, can be altered very effectively by the confinement potentials. Here,
we found that this can even lead to a sign change of the g-factors. The resulting
g-factor difference alters the dynamics of the system drastically and produces
effects typically attributed to a spin-orbit induced spin-flip term. The investigations
carried out in this thesis give further insights into the possibilities of holes
in Ge and reveal new physical properties that need to be considered when designing
future spin qubit experiments.'
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: The author gratefully acknowledges support by the Austrian Science
Fund (FWF), grants No P30207, and the Nomis foundation.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Daniel
full_name: Jirovec, Daniel
id: 4C473F58-F248-11E8-B48F-1D18A9856A87
last_name: Jirovec
orcid: 0000-0002-7197-4801
citation:
ama: Jirovec D. Singlet-Triplet qubits and spin-orbit interaction in 2-dimensional
Ge hole gases. 2021. doi:10.15479/at:ista:10058
apa: Jirovec, D. (2021). Singlet-Triplet qubits and spin-orbit interaction in
2-dimensional Ge hole gases. Institute of Science and Technology Austria.
https://doi.org/10.15479/at:ista:10058
chicago: Jirovec, Daniel. “Singlet-Triplet Qubits and Spin-Orbit Interaction in
2-Dimensional Ge Hole Gases.” Institute of Science and Technology Austria, 2021.
https://doi.org/10.15479/at:ista:10058.
ieee: D. Jirovec, “Singlet-Triplet qubits and spin-orbit interaction in 2-dimensional
Ge hole gases,” Institute of Science and Technology Austria, 2021.
ista: Jirovec D. 2021. Singlet-Triplet qubits and spin-orbit interaction in 2-dimensional
Ge hole gases. Institute of Science and Technology Austria.
mla: Jirovec, Daniel. Singlet-Triplet Qubits and Spin-Orbit Interaction in 2-Dimensional
Ge Hole Gases. Institute of Science and Technology Austria, 2021, doi:10.15479/at:ista:10058.
short: D. Jirovec, Singlet-Triplet Qubits and Spin-Orbit Interaction in 2-Dimensional
Ge Hole Gases, Institute of Science and Technology Austria, 2021.
date_created: 2021-09-30T07:53:49Z
date_published: 2021-10-05T00:00:00Z
date_updated: 2023-09-08T11:41:08Z
day: '05'
ddc:
- '621'
- '539'
degree_awarded: PhD
department:
- _id: GradSch
- _id: GeKa
doi: 10.15479/at:ista:10058
file:
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checksum: ad6bcb24083ed7c02baaf1885c9ea3d5
content_type: application/x-zip-compressed
creator: djirovec
date_created: 2021-09-30T14:29:14Z
date_updated: 2022-12-20T23:30:07Z
embargo_to: open_access
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file_name: PHD_Thesis_Jirovec_Source.zip
file_size: 32397600
relation: source_file
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content_type: application/pdf
creator: djirovec
date_created: 2021-10-05T07:56:49Z
date_updated: 2022-12-20T23:30:07Z
embargo: 2022-10-06
file_id: '10087'
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file_size: 26910829
relation: main_file
file_date_updated: 2022-12-20T23:30:07Z
has_accepted_license: '1'
keyword:
- qubits
- quantum computing
- holes
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: '151'
project:
- _id: 2641CE5E-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P30207
name: Hole spin orbit qubits in Ge quantum wells
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '8831'
relation: part_of_dissertation
status: public
- id: '10065'
relation: part_of_dissertation
status: public
- id: '10066'
relation: part_of_dissertation
status: public
- id: '8909'
relation: part_of_dissertation
status: public
- id: '5816'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
title: Singlet-Triplet qubits and spin-orbit interaction in 2-dimensional Ge hole
gases
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
---
_id: '8909'
abstract:
- lang: eng
text: Spin qubits are considered to be among the most promising candidates for building
a quantum processor. Group IV hole spin qubits have moved into the focus of interest
due to the ease of operation and compatibility with Si technology. In addition,
Ge offers the option for monolithic superconductor-semiconductor integration.
Here we demonstrate a hole spin qubit operating at fields below 10 mT, the critical
field of Al, by exploiting the large out-of-plane hole g-factors in planar Ge
and by encoding the qubit into the singlet-triplet states of a double quantum
dot. We observe electrically controlled X and Z-rotations with tunable frequencies
exceeding 100 MHz and dephasing times of 1μs which we extend beyond 15μs with
echo techniques. These results show that Ge hole singlet triplet qubits outperform
their electronic Si and GaAs based counterparts in speed and coherence, respectively.
In addition, they are on par with Ge single spin qubits, but can be operated at
much lower fields underlining their potential for on chip integration with superconducting
technologies.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: This research was supported by the Scientific Service Units of Institute
of Science and Technology (IST) Austria through resources provided by the Miba Machine
Shop and the nanofabrication facility, and was made possible with the support of
the NOMIS Foundation. This project has received funding from the European Union’s
Horizon 2020 research and innovation programme under Marie Sklodowska-Curie grant
agreements no. 844511 and no. 75441, and by the Austrian Science Fund FWF-P 30207
project. A.B. acknowledges support from the European Union Horizon 2020 FET project
microSPIRE, no. 766955. M. Botifoll and J.A. acknowledge funding from Generalitat
de Catalunya 2017 SGR 327. The Catalan Institute of Nanoscience and Nanotechnology
(ICN2) is supported by the Severo Ochoa programme from the Spanish Ministery of
Economy (MINECO) (grant no. SEV-2017-0706) and is funded by the Catalonian Research
Centre (CERCA) Programme, Generalitat de Catalunya. Part of the present work has
been performed within the framework of the Universitat Autónoma de Barcelona Materials
Science PhD programme. Part of the HAADF scanning transmission electron microscopy
was conducted in the Laboratorio de Microscopias Avanzadas at Instituto de Nanociencia
de Aragon, Universidad de Zaragoza. ICN2 acknowledge support from the Spanish Superior
Council of Scientific Research (CSIC) Research Platform on Quantum Technologies
PTI-001. M.B. acknowledges funding from the Catalan Agency for Management of University
and Research Grants (AGAUR) Generalitat de Catalunya formation of investigators
(FI) PhD grant.
article_processing_charge: No
article_type: original
author:
- first_name: Daniel
full_name: Jirovec, Daniel
id: 4C473F58-F248-11E8-B48F-1D18A9856A87
last_name: Jirovec
orcid: 0000-0002-7197-4801
- first_name: Andrea C
full_name: Hofmann, Andrea C
id: 340F461A-F248-11E8-B48F-1D18A9856A87
last_name: Hofmann
- first_name: Andrea
full_name: Ballabio, Andrea
last_name: Ballabio
- first_name: Philipp M.
full_name: Mutter, Philipp M.
last_name: Mutter
- first_name: Giulio
full_name: Tavani, Giulio
last_name: Tavani
- first_name: Marc
full_name: Botifoll, Marc
last_name: Botifoll
- first_name: Alessandro
full_name: Crippa, Alessandro
id: 1F2B21A2-F6E7-11E9-9B82-F7DBE5697425
last_name: Crippa
orcid: 0000-0002-2968-611X
- first_name: Josip
full_name: Kukucka, Josip
id: 3F5D8856-F248-11E8-B48F-1D18A9856A87
last_name: Kukucka
- first_name: Oliver
full_name: Sagi, Oliver
id: 71616374-A8E9-11E9-A7CA-09ECE5697425
last_name: Sagi
- first_name: Frederico
full_name: Martins, Frederico
id: 38F80F9A-1CB8-11EA-BC76-B49B3DDC885E
last_name: Martins
orcid: 0000-0003-2668-2401
- first_name: Jaime
full_name: Saez Mollejo, Jaime
id: e0390f72-f6e0-11ea-865d-862393336714
last_name: Saez Mollejo
- first_name: Ivan
full_name: Prieto Gonzalez, Ivan
id: 2A307FE2-F248-11E8-B48F-1D18A9856A87
last_name: Prieto Gonzalez
orcid: 0000-0002-7370-5357
- first_name: Maksim
full_name: Borovkov, Maksim
id: 2ac7a0a2-3562-11eb-9256-fbd18ea55087
last_name: Borovkov
- first_name: Jordi
full_name: Arbiol, Jordi
last_name: Arbiol
- first_name: Daniel
full_name: Chrastina, Daniel
last_name: Chrastina
- first_name: Giovanni
full_name: Isella, Giovanni
last_name: Isella
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
citation:
ama: Jirovec D, Hofmann AC, Ballabio A, et al. A singlet triplet hole spin qubit
in planar Ge. Nature Materials. 2021;20(8):1106–1112. doi:10.1038/s41563-021-01022-2
apa: Jirovec, D., Hofmann, A. C., Ballabio, A., Mutter, P. M., Tavani, G., Botifoll,
M., … Katsaros, G. (2021). A singlet triplet hole spin qubit in planar Ge. Nature
Materials. Springer Nature. https://doi.org/10.1038/s41563-021-01022-2
chicago: Jirovec, Daniel, Andrea C Hofmann, Andrea Ballabio, Philipp M. Mutter,
Giulio Tavani, Marc Botifoll, Alessandro Crippa, et al. “A Singlet Triplet Hole
Spin Qubit in Planar Ge.” Nature Materials. Springer Nature, 2021. https://doi.org/10.1038/s41563-021-01022-2.
ieee: D. Jirovec et al., “A singlet triplet hole spin qubit in planar Ge,”
Nature Materials, vol. 20, no. 8. Springer Nature, pp. 1106–1112, 2021.
ista: Jirovec D, Hofmann AC, Ballabio A, Mutter PM, Tavani G, Botifoll M, Crippa
A, Kukucka J, Sagi O, Martins F, Saez Mollejo J, Prieto Gonzalez I, Borovkov M,
Arbiol J, Chrastina D, Isella G, Katsaros G. 2021. A singlet triplet hole spin
qubit in planar Ge. Nature Materials. 20(8), 1106–1112.
mla: Jirovec, Daniel, et al. “A Singlet Triplet Hole Spin Qubit in Planar Ge.” Nature
Materials, vol. 20, no. 8, Springer Nature, 2021, pp. 1106–1112, doi:10.1038/s41563-021-01022-2.
short: D. Jirovec, A.C. Hofmann, A. Ballabio, P.M. Mutter, G. Tavani, M. Botifoll,
A. Crippa, J. Kukucka, O. Sagi, F. Martins, J. Saez Mollejo, I. Prieto Gonzalez,
M. Borovkov, J. Arbiol, D. Chrastina, G. Isella, G. Katsaros, Nature Materials
20 (2021) 1106–1112.
date_created: 2020-12-02T10:50:47Z
date_published: 2021-08-01T00:00:00Z
date_updated: 2024-03-28T23:30:27Z
day: '01'
department:
- _id: GeKa
- _id: NanoFab
- _id: GradSch
doi: 10.1038/s41563-021-01022-2
ec_funded: 1
external_id:
arxiv:
- '2011.13755'
isi:
- '000657596400001'
intvolume: ' 20'
isi: 1
issue: '8'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2011.13755
month: '08'
oa: 1
oa_version: Preprint
page: 1106–1112
project:
- _id: 26A151DA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '844511'
name: Majorana bound states in Ge/SiGe heterostructures
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 2641CE5E-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P30207
name: Hole spin orbit qubits in Ge quantum wells
- _id: 262116AA-B435-11E9-9278-68D0E5697425
name: Hybrid Semiconductor - Superconductor Quantum Devices
publication: Nature Materials
publication_identifier:
eissn:
- 1476-4660
issn:
- 1476-1122
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/quantum-computing-with-holes/
record:
- id: '9323'
relation: research_data
status: public
- id: '10058'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: A singlet triplet hole spin qubit in planar Ge
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 20
year: '2021'
...
---
_id: '9397'
abstract:
- lang: eng
text: Accumulation of interstitial fluid (IF) between embryonic cells is a common
phenomenon in vertebrate embryogenesis. Unlike other model systems, where these
accumulations coalesce into a large central cavity – the blastocoel, in zebrafish,
IF is more uniformly distributed between the deep cells (DC) before the onset
of gastrulation. This is likely due to the presence of a large extraembryonic
structure – the yolk cell (YC) at the position where the blastocoel typically
forms in other model organisms. IF has long been speculated to play a role in
tissue morphogenesis during embryogenesis, but direct evidence supporting such
function is still sparse. Here we show that the relocalization of IF to the interface
between the YC and DC/epiblast is critical for axial mesendoderm (ME) cell protrusion
formation and migration along this interface, a key process in embryonic axis
formation. We further demonstrate that axial ME cell migration and IF relocalization
engage in a positive feedback loop, where axial ME migration triggers IF accumulation
ahead of the advancing axial ME tissue by mechanically compressing the overlying
epiblast cell layer. Upon compression, locally induced flow relocalizes the IF
through the porous epiblast tissue resulting in an IF accumulation ahead of the
leading axial ME. This IF accumulation, in turn, promotes cell protrusion formation
and migration of the leading axial ME cells, thereby facilitating axial ME extension.
Our findings reveal a central role of dynamic IF relocalization in orchestrating
germ layer morphogenesis during gastrulation.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Karla
full_name: Huljev, Karla
id: 44C6F6A6-F248-11E8-B48F-1D18A9856A87
last_name: Huljev
citation:
ama: Huljev K. Coordinated spatiotemporal reorganization of interstitial fluid is
required for axial mesendoderm migration in zebrafish gastrulation. 2021. doi:10.15479/at:ista:9397
apa: Huljev, K. (2021). Coordinated spatiotemporal reorganization of interstitial
fluid is required for axial mesendoderm migration in zebrafish gastrulation.
Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:9397
chicago: Huljev, Karla. “Coordinated Spatiotemporal Reorganization of Interstitial
Fluid Is Required for Axial Mesendoderm Migration in Zebrafish Gastrulation.”
Institute of Science and Technology Austria, 2021. https://doi.org/10.15479/at:ista:9397.
ieee: K. Huljev, “Coordinated spatiotemporal reorganization of interstitial fluid
is required for axial mesendoderm migration in zebrafish gastrulation,” Institute
of Science and Technology Austria, 2021.
ista: Huljev K. 2021. Coordinated spatiotemporal reorganization of interstitial
fluid is required for axial mesendoderm migration in zebrafish gastrulation. Institute
of Science and Technology Austria.
mla: Huljev, Karla. Coordinated Spatiotemporal Reorganization of Interstitial
Fluid Is Required for Axial Mesendoderm Migration in Zebrafish Gastrulation.
Institute of Science and Technology Austria, 2021, doi:10.15479/at:ista:9397.
short: K. Huljev, Coordinated Spatiotemporal Reorganization of Interstitial Fluid
Is Required for Axial Mesendoderm Migration in Zebrafish Gastrulation, Institute
of Science and Technology Austria, 2021.
date_created: 2021-05-17T12:31:30Z
date_published: 2021-05-18T00:00:00Z
date_updated: 2023-09-07T13:32:32Z
day: '18'
ddc:
- '571'
degree_awarded: PhD
department:
- _id: CaHe
- _id: GradSch
doi: 10.15479/at:ista:9397
file:
- access_level: closed
checksum: 7f98532f5324a0b2f3fa8de2967baa19
content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: khuljev
date_created: 2021-05-17T12:29:12Z
date_updated: 2022-05-21T22:30:04Z
embargo_to: open_access
file_id: '9398'
file_name: KHuljev_Thesis_corrections.docx
file_size: 47799741
relation: source_file
- access_level: open_access
checksum: bf512f8a1e572a543778fc4b227c01ba
content_type: application/pdf
creator: khuljev
date_created: 2021-05-18T14:50:28Z
date_updated: 2022-05-21T22:30:04Z
embargo: 2022-05-20
file_id: '9401'
file_name: new_KHuljev_Thesis_corrections.pdf
file_size: 16542131
relation: main_file
file_date_updated: 2022-05-21T22:30:04Z
has_accepted_license: '1'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: '101'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
status: public
supervisor:
- first_name: Carl-Philipp J
full_name: Heisenberg, Carl-Philipp J
id: 39427864-F248-11E8-B48F-1D18A9856A87
last_name: Heisenberg
orcid: 0000-0002-0912-4566
title: Coordinated spatiotemporal reorganization of interstitial fluid is required
for axial mesendoderm migration in zebrafish gastrulation
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
---
_id: '10066'
abstract:
- lang: eng
text: The potential of Si and SiGe-based devices for the scaling of quantum circuits
is tainted by device variability. Each device needs to be tuned to operation conditions.
We give a key step towards tackling this variability with an algorithm that, without
modification, is capable of tuning a 4-gate Si FinFET, a 5-gate GeSi nanowire
and a 7-gate SiGe heterostructure double quantum dot device from scratch. We achieve
tuning times of 30, 10, and 92 minutes, respectively. The algorithm also provides
insight into the parameter space landscape for each of these devices. These results
show that overarching solutions for the tuning of quantum devices are enabled
by machine learning.
acknowledged_ssus:
- _id: NanoFab
acknowledgement: "We acknowledge Ang Li, Erik P. A. M. Bakkers (University of Eindhoven)
for the fabrication of the Ge/Si nanowire. This work was supported by the Royal
Society, the EPSRC National Quantum Technology Hub in Networked Quantum Information
Technology (EP/M013243/1), Quantum Technology Capital (EP/N014995/1), EPSRC Platform
Grant\r\n(EP/R029229/1), the European Research Council (Grant agreement 948932),
the Swiss Nanoscience Institute, the\r\nNCCR SPIN, the EU H2020 European Microkelvin
Platform EMP grant No. 824109, the Scientific Service Units\r\nof IST Austria through
resources provided by the nanofabrication facility and, the FWF-P30207 project.
This publication was also made possible through support from Templeton World Charity
Foundation and John Templeton Foundation. The opinions expressed in this publication
are those of the authors and do not necessarily reflect the views of the Templeton
Foundations."
article_number: '2107.12975'
article_processing_charge: No
author:
- first_name: B.
full_name: Severin, B.
last_name: Severin
- first_name: D. T.
full_name: Lennon, D. T.
last_name: Lennon
- first_name: L. C.
full_name: Camenzind, L. C.
last_name: Camenzind
- first_name: F.
full_name: Vigneau, F.
last_name: Vigneau
- first_name: F.
full_name: Fedele, F.
last_name: Fedele
- first_name: Daniel
full_name: Jirovec, Daniel
id: 4C473F58-F248-11E8-B48F-1D18A9856A87
last_name: Jirovec
orcid: 0000-0002-7197-4801
- first_name: A.
full_name: Ballabio, A.
last_name: Ballabio
- first_name: D.
full_name: Chrastina, D.
last_name: Chrastina
- first_name: G.
full_name: Isella, G.
last_name: Isella
- first_name: M. de
full_name: Kruijf, M. de
last_name: Kruijf
- first_name: M. J.
full_name: Carballido, M. J.
last_name: Carballido
- first_name: S.
full_name: Svab, S.
last_name: Svab
- first_name: A. V.
full_name: Kuhlmann, A. V.
last_name: Kuhlmann
- first_name: F. R.
full_name: Braakman, F. R.
last_name: Braakman
- first_name: S.
full_name: Geyer, S.
last_name: Geyer
- first_name: F. N. M.
full_name: Froning, F. N. M.
last_name: Froning
- first_name: H.
full_name: Moon, H.
last_name: Moon
- first_name: M. A.
full_name: Osborne, M. A.
last_name: Osborne
- first_name: D.
full_name: Sejdinovic, D.
last_name: Sejdinovic
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
- first_name: D. M.
full_name: Zumbühl, D. M.
last_name: Zumbühl
- first_name: G. A. D.
full_name: Briggs, G. A. D.
last_name: Briggs
- first_name: N.
full_name: Ares, N.
last_name: Ares
citation:
ama: Severin B, Lennon DT, Camenzind LC, et al. Cross-architecture tuning of silicon
and SiGe-based quantum devices using machine learning. arXiv. doi:10.48550/arXiv.2107.12975
apa: Severin, B., Lennon, D. T., Camenzind, L. C., Vigneau, F., Fedele, F., Jirovec,
D., … Ares, N. (n.d.). Cross-architecture tuning of silicon and SiGe-based quantum
devices using machine learning. arXiv. https://doi.org/10.48550/arXiv.2107.12975
chicago: Severin, B., D. T. Lennon, L. C. Camenzind, F. Vigneau, F. Fedele, Daniel
Jirovec, A. Ballabio, et al. “Cross-Architecture Tuning of Silicon and SiGe-Based
Quantum Devices Using Machine Learning.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2107.12975.
ieee: B. Severin et al., “Cross-architecture tuning of silicon and SiGe-based
quantum devices using machine learning,” arXiv. .
ista: Severin B, Lennon DT, Camenzind LC, Vigneau F, Fedele F, Jirovec D, Ballabio
A, Chrastina D, Isella G, Kruijf M de, Carballido MJ, Svab S, Kuhlmann AV, Braakman
FR, Geyer S, Froning FNM, Moon H, Osborne MA, Sejdinovic D, Katsaros G, Zumbühl
DM, Briggs GAD, Ares N. Cross-architecture tuning of silicon and SiGe-based quantum
devices using machine learning. arXiv, 2107.12975.
mla: Severin, B., et al. “Cross-Architecture Tuning of Silicon and SiGe-Based Quantum
Devices Using Machine Learning.” ArXiv, 2107.12975, doi:10.48550/arXiv.2107.12975.
short: B. Severin, D.T. Lennon, L.C. Camenzind, F. Vigneau, F. Fedele, D. Jirovec,
A. Ballabio, D. Chrastina, G. Isella, M. de Kruijf, M.J. Carballido, S. Svab,
A.V. Kuhlmann, F.R. Braakman, S. Geyer, F.N.M. Froning, H. Moon, M.A. Osborne,
D. Sejdinovic, G. Katsaros, D.M. Zumbühl, G.A.D. Briggs, N. Ares, ArXiv (n.d.).
date_created: 2021-10-01T12:40:22Z
date_published: 2021-07-27T00:00:00Z
date_updated: 2024-03-28T23:30:27Z
day: '27'
department:
- _id: GeKa
doi: 10.48550/arXiv.2107.12975
external_id:
arxiv:
- '2107.12975'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2107.12975
month: '07'
oa: 1
oa_version: Preprint
project:
- _id: 2641CE5E-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P30207
name: Hole spin orbit qubits in Ge quantum wells
publication: arXiv
publication_status: submitted
related_material:
record:
- id: '10058'
relation: dissertation_contains
status: public
status: public
title: Cross-architecture tuning of silicon and SiGe-based quantum devices using machine
learning
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '9437'
abstract:
- lang: eng
text: The synaptic connection from medial habenula (MHb) to interpeduncular nucleus
(IPN) is critical for emotion-related behaviors and uniquely expresses R-type
Ca2+ channels (Cav2.3) and auxiliary GABAB receptor (GBR) subunits, the K+-channel
tetramerization domain-containing proteins (KCTDs). Activation of GBRs facilitates
or inhibits transmitter release from MHb terminals depending on the IPN subnucleus,
but the role of KCTDs is unknown. We therefore examined the localization and function
of Cav2.3, GBRs, and KCTDs in this pathway in mice. We show in heterologous cells
that KCTD8 and KCTD12b directly bind to Cav2.3 and that KCTD8 potentiates Cav2.3
currents in the absence of GBRs. In the rostral IPN, KCTD8, KCTD12b, and Cav2.3
co-localize at the presynaptic active zone. Genetic deletion indicated a bidirectional
modulation of Cav2.3-mediated release by these KCTDs with a compensatory increase
of KCTD8 in the active zone in KCTD12b-deficient mice. The interaction of Cav2.3
with KCTDs therefore scales synaptic strength independent of GBR activation.
acknowledgement: We are grateful to Akari Hagiwara and Toshihisa Ohtsuka for CAST
antibody, and Masahiko Watanabe for neurexin antibody. We thank David Adams for
kindly providing the stable Cav2.3 cell line. Cav2.3 KO mice were kindly provided
by Tsutomu Tanabe. This project has received funding from the European Research
Council (ERC) and European Commission (EC), under the European Union’s Horizon 2020
research and innovation programme (ERC grant agreement no. 694539 to Ryuichi Shigemoto,
no. 692692 to Peter Jonas, and the Marie Skłodowska-Curie grant agreement no. 665385
to Cihan Önal), the Swiss National Science Foundation Grant 31003A-172881 to Bernhard
Bettler and Deutsche Forschungsgemeinschaft (For 2143) and BIOSS-2 to Akos Kulik.
article_number: e68274
article_processing_charge: No
article_type: original
author:
- first_name: Pradeep
full_name: Bhandari, Pradeep
id: 45EDD1BC-F248-11E8-B48F-1D18A9856A87
last_name: Bhandari
orcid: 0000-0003-0863-4481
- first_name: David H
full_name: Vandael, David H
id: 3AE48E0A-F248-11E8-B48F-1D18A9856A87
last_name: Vandael
orcid: 0000-0001-7577-1676
- first_name: Diego
full_name: Fernández-Fernández, Diego
last_name: Fernández-Fernández
- first_name: Thorsten
full_name: Fritzius, Thorsten
last_name: Fritzius
- first_name: David
full_name: Kleindienst, David
id: 42E121A4-F248-11E8-B48F-1D18A9856A87
last_name: Kleindienst
- first_name: Hüseyin C
full_name: Önal, Hüseyin C
id: 4659D740-F248-11E8-B48F-1D18A9856A87
last_name: Önal
orcid: 0000-0002-2771-2011
- first_name: Jacqueline-Claire
full_name: Montanaro-Punzengruber, Jacqueline-Claire
id: 3786AB44-F248-11E8-B48F-1D18A9856A87
last_name: Montanaro-Punzengruber
- first_name: Martin
full_name: Gassmann, Martin
last_name: Gassmann
- first_name: Peter M
full_name: Jonas, Peter M
id: 353C1B58-F248-11E8-B48F-1D18A9856A87
last_name: Jonas
orcid: 0000-0001-5001-4804
- first_name: Akos
full_name: Kulik, Akos
last_name: Kulik
- first_name: Bernhard
full_name: Bettler, Bernhard
last_name: Bettler
- first_name: Ryuichi
full_name: Shigemoto, Ryuichi
id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
last_name: Shigemoto
orcid: 0000-0001-8761-9444
- first_name: Peter
full_name: Koppensteiner, Peter
id: 3B8B25A8-F248-11E8-B48F-1D18A9856A87
last_name: Koppensteiner
orcid: 0000-0002-3509-1948
citation:
ama: Bhandari P, Vandael DH, Fernández-Fernández D, et al. GABAB receptor auxiliary
subunits modulate Cav2.3-mediated release from medial habenula terminals. eLife.
2021;10. doi:10.7554/ELIFE.68274
apa: Bhandari, P., Vandael, D. H., Fernández-Fernández, D., Fritzius, T., Kleindienst,
D., Önal, H. C., … Koppensteiner, P. (2021). GABAB receptor auxiliary subunits
modulate Cav2.3-mediated release from medial habenula terminals. ELife.
eLife Sciences Publications. https://doi.org/10.7554/ELIFE.68274
chicago: Bhandari, Pradeep, David H Vandael, Diego Fernández-Fernández, Thorsten
Fritzius, David Kleindienst, Hüseyin C Önal, Jacqueline-Claire Montanaro-Punzengruber,
et al. “GABAB Receptor Auxiliary Subunits Modulate Cav2.3-Mediated Release from
Medial Habenula Terminals.” ELife. eLife Sciences Publications, 2021. https://doi.org/10.7554/ELIFE.68274.
ieee: P. Bhandari et al., “GABAB receptor auxiliary subunits modulate Cav2.3-mediated
release from medial habenula terminals,” eLife, vol. 10. eLife Sciences
Publications, 2021.
ista: Bhandari P, Vandael DH, Fernández-Fernández D, Fritzius T, Kleindienst D,
Önal HC, Montanaro-Punzengruber J-C, Gassmann M, Jonas PM, Kulik A, Bettler B,
Shigemoto R, Koppensteiner P. 2021. GABAB receptor auxiliary subunits modulate
Cav2.3-mediated release from medial habenula terminals. eLife. 10, e68274.
mla: Bhandari, Pradeep, et al. “GABAB Receptor Auxiliary Subunits Modulate Cav2.3-Mediated
Release from Medial Habenula Terminals.” ELife, vol. 10, e68274, eLife
Sciences Publications, 2021, doi:10.7554/ELIFE.68274.
short: P. Bhandari, D.H. Vandael, D. Fernández-Fernández, T. Fritzius, D. Kleindienst,
H.C. Önal, J.-C. Montanaro-Punzengruber, M. Gassmann, P.M. Jonas, A. Kulik, B.
Bettler, R. Shigemoto, P. Koppensteiner, ELife 10 (2021).
date_created: 2021-05-30T22:01:23Z
date_published: 2021-04-29T00:00:00Z
date_updated: 2024-03-28T23:30:31Z
day: '29'
ddc:
- '570'
department:
- _id: RySh
- _id: PeJo
doi: 10.7554/ELIFE.68274
ec_funded: 1
external_id:
isi:
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language:
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month: '04'
oa: 1
oa_version: Published Version
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '694539'
name: 'In situ analysis of single channel subunit composition in neurons: physiological
implication in synaptic plasticity and behaviour'
- _id: 25B7EB9E-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '692692'
name: Biophysics and circuit function of a giant cortical glumatergic synapse
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: eLife
publication_identifier:
eissn:
- 2050-084X
publication_status: published
publisher: eLife Sciences Publications
quality_controlled: '1'
related_material:
link:
- relation: earlier_version
url: https://doi.org/10.1101/2020.04.16.045112
record:
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relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: GABAB receptor auxiliary subunits modulate Cav2.3-mediated release from medial
habenula terminals
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 10
year: '2021'
...
---
_id: '9562'
abstract:
- lang: eng
text: Left-right asymmetries can be considered a fundamental organizational principle
of the vertebrate central nervous system. The hippocampal CA3-CA1 pyramidal cell
synaptic connection shows an input-side dependent asymmetry where the hemispheric
location of the presynaptic CA3 neuron determines the synaptic properties. Left-input
synapses terminating on apical dendrites in stratum radiatum have a higher density
of NMDA receptor subunit GluN2B, a lower density of AMPA receptor subunit GluA1
and smaller areas with less often perforated PSDs. On the other hand, left-input
synapses terminating on basal dendrites in stratum oriens have lower GluN2B densities
than right-input ones. Apical and basal synapses further employ different signaling
pathways involved in LTP. SDS-digested freeze-fracture replica labeling can visualize
synaptic membrane proteins with high sensitivity and resolution, and has been
used to reveal the asymmetry at the electron microscopic level. However, it requires
time-consuming manual demarcation of the synaptic surface for quantitative measurements.
To facilitate the analysis of replica labeling, I first developed a software named
Darea, which utilizes deep-learning to automatize this demarcation. With Darea
I characterized the synaptic distribution of NMDA and AMPA receptors as well as
the voltage-gated Ca2+ channels in CA1 stratum radiatum and oriens. Second, I
explored the role of GluN2B and its carboxy-terminus in the establishment of input-side
dependent hippocampal asymmetry. In conditional knock-out mice lacking GluN2B
expression in CA1 and GluN2B-2A swap mice, where GluN2B carboxy-terminus was exchanged
to that of GluN2A, no significant asymmetries of GluN2B, GluA1 and PSD area were
detected. We further discovered a previously unknown functional asymmetry of GluN2A,
which was also lost in the swap mouse. These results demonstrate that GluN2B carboxy-terminus
plays a critical role in normal formation of input-side dependent asymmetry.
acknowledged_ssus:
- _id: EM-Fac
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: David
full_name: Kleindienst, David
id: 42E121A4-F248-11E8-B48F-1D18A9856A87
last_name: Kleindienst
citation:
ama: 'Kleindienst D. 2B or not 2B: Hippocampal asymmetries mediated by NMDA receptor
subunit GluN2B C-terminus and high-throughput image analysis by Deep-Learning.
2021. doi:10.15479/at:ista:9562'
apa: 'Kleindienst, D. (2021). 2B or not 2B: Hippocampal asymmetries mediated
by NMDA receptor subunit GluN2B C-terminus and high-throughput image analysis
by Deep-Learning. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:9562'
chicago: 'Kleindienst, David. “2B or Not 2B: Hippocampal Asymmetries Mediated by
NMDA Receptor Subunit GluN2B C-Terminus and High-Throughput Image Analysis by
Deep-Learning.” Institute of Science and Technology Austria, 2021. https://doi.org/10.15479/at:ista:9562.'
ieee: 'D. Kleindienst, “2B or not 2B: Hippocampal asymmetries mediated by NMDA receptor
subunit GluN2B C-terminus and high-throughput image analysis by Deep-Learning,”
Institute of Science and Technology Austria, 2021.'
ista: 'Kleindienst D. 2021. 2B or not 2B: Hippocampal asymmetries mediated by NMDA
receptor subunit GluN2B C-terminus and high-throughput image analysis by Deep-Learning.
Institute of Science and Technology Austria.'
mla: 'Kleindienst, David. 2B or Not 2B: Hippocampal Asymmetries Mediated by NMDA
Receptor Subunit GluN2B C-Terminus and High-Throughput Image Analysis by Deep-Learning.
Institute of Science and Technology Austria, 2021, doi:10.15479/at:ista:9562.'
short: 'D. Kleindienst, 2B or Not 2B: Hippocampal Asymmetries Mediated by NMDA Receptor
Subunit GluN2B C-Terminus and High-Throughput Image Analysis by Deep-Learning,
Institute of Science and Technology Austria, 2021.'
date_created: 2021-06-17T14:10:47Z
date_published: 2021-06-01T00:00:00Z
date_updated: 2023-09-11T12:55:53Z
day: '01'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: RySh
doi: 10.15479/at:ista:9562
file:
- access_level: open_access
checksum: 659df5518db495f679cb1df9e9bd1d94
content_type: application/pdf
creator: dkleindienst
date_created: 2021-06-17T14:03:14Z
date_updated: 2022-07-02T22:30:04Z
embargo: 2022-07-01
file_id: '9563'
file_name: Thesis.pdf
file_size: 77299142
relation: main_file
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checksum: 3bcf63a2b19e5b6663be051bea332748
content_type: application/zip
creator: dkleindienst
date_created: 2021-06-17T14:04:30Z
date_updated: 2022-07-02T22:30:04Z
embargo_to: open_access
file_id: '9564'
file_name: Thesis_source.zip
file_size: 369804895
relation: source_file
file_date_updated: 2022-07-02T22:30:04Z
has_accepted_license: '1'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: '124'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '9756'
relation: part_of_dissertation
status: public
- id: '9437'
relation: part_of_dissertation
status: public
- id: '8532'
relation: part_of_dissertation
status: public
- id: '612'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Ryuichi
full_name: Shigemoto, Ryuichi
id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
last_name: Shigemoto
orcid: 0000-0001-8761-9444
title: '2B or not 2B: Hippocampal asymmetries mediated by NMDA receptor subunit GluN2B
C-terminus and high-throughput image analysis by Deep-Learning'
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
---
_id: '8934'
abstract:
- lang: eng
text: "In this thesis, we consider several of the most classical and fundamental
problems in static analysis and formal verification, including invariant generation,
reachability analysis, termination analysis of probabilistic programs, data-flow
analysis, quantitative analysis of Markov chains and Markov decision processes,
and the problem of data packing in cache management.\r\nWe use techniques from
parameterized complexity theory, polyhedral geometry, and real algebraic geometry
to significantly improve the state-of-the-art, in terms of both scalability and
completeness guarantees, for the mentioned problems. In some cases, our results
are the first theoretical improvements for the respective problems in two or three
decades."
acknowledgement: 'The research was partially supported by an IBM PhD fellowship, a
Facebook PhD fellowship, and DOC fellowship #24956 of the Austrian Academy of Sciences
(OeAW).'
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Amir Kafshdar
full_name: Goharshady, Amir Kafshdar
id: 391365CE-F248-11E8-B48F-1D18A9856A87
last_name: Goharshady
orcid: 0000-0003-1702-6584
citation:
ama: Goharshady AK. Parameterized and algebro-geometric advances in static program
analysis. 2021. doi:10.15479/AT:ISTA:8934
apa: Goharshady, A. K. (2021). Parameterized and algebro-geometric advances in
static program analysis. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8934
chicago: Goharshady, Amir Kafshdar. “Parameterized and Algebro-Geometric Advances
in Static Program Analysis.” Institute of Science and Technology Austria, 2021.
https://doi.org/10.15479/AT:ISTA:8934.
ieee: A. K. Goharshady, “Parameterized and algebro-geometric advances in static
program analysis,” Institute of Science and Technology Austria, 2021.
ista: Goharshady AK. 2021. Parameterized and algebro-geometric advances in static
program analysis. Institute of Science and Technology Austria.
mla: Goharshady, Amir Kafshdar. Parameterized and Algebro-Geometric Advances
in Static Program Analysis. Institute of Science and Technology Austria, 2021,
doi:10.15479/AT:ISTA:8934.
short: A.K. Goharshady, Parameterized and Algebro-Geometric Advances in Static Program
Analysis, Institute of Science and Technology Austria, 2021.
date_created: 2020-12-10T12:17:07Z
date_published: 2021-01-01T00:00:00Z
date_updated: 2023-09-22T10:03:21Z
day: '01'
ddc:
- '005'
degree_awarded: PhD
department:
- _id: KrCh
- _id: GradSch
doi: 10.15479/AT:ISTA:8934
file:
- access_level: open_access
checksum: d1b9db3725aed34dadd81274aeb9426c
content_type: application/pdf
creator: akafshda
date_created: 2020-12-22T20:08:44Z
date_updated: 2021-12-23T23:30:04Z
embargo: 2021-12-22
file_id: '8969'
file_name: Thesis-pdfa.pdf
file_size: 5251507
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checksum: 1661df7b393e6866d2460eba3c905130
content_type: application/zip
creator: akafshda
date_created: 2020-12-22T20:08:50Z
date_updated: 2021-03-04T23:30:04Z
embargo_to: open_access
file_id: '8970'
file_name: source.zip
file_size: 10636756
relation: source_file
file_date_updated: 2021-12-23T23:30:04Z
has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/publicdomain/zero/1.0/
month: '01'
oa: 1
oa_version: Published Version
page: '278'
project:
- _id: 267066CE-B435-11E9-9278-68D0E5697425
name: Quantitative Analysis of Probablistic Systems with a focus on Crypto-currencies
- _id: 266EEEC0-B435-11E9-9278-68D0E5697425
name: Quantitative Game-theoretic Analysis of Blockchain Applications and Smart
Contracts
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '1386'
relation: part_of_dissertation
status: public
- id: '1437'
relation: part_of_dissertation
status: public
- id: '311'
relation: part_of_dissertation
status: public
- id: '6056'
relation: part_of_dissertation
status: public
- id: '6380'
relation: part_of_dissertation
status: public
- id: '639'
relation: part_of_dissertation
status: public
- id: '66'
relation: part_of_dissertation
status: public
- id: '6780'
relation: part_of_dissertation
status: public
- id: '6918'
relation: part_of_dissertation
status: public
- id: '7810'
relation: part_of_dissertation
status: public
- id: '6175'
relation: part_of_dissertation
status: public
- id: '6378'
relation: part_of_dissertation
status: public
- id: '6490'
relation: part_of_dissertation
status: public
- id: '7014'
relation: part_of_dissertation
status: public
- id: '8089'
relation: part_of_dissertation
status: public
- id: '8728'
relation: part_of_dissertation
status: public
- id: '7158'
relation: part_of_dissertation
status: public
- id: '5977'
relation: part_of_dissertation
status: public
- id: '6009'
relation: part_of_dissertation
status: public
- id: '6340'
relation: part_of_dissertation
status: public
- id: '949'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
title: Parameterized and algebro-geometric advances in static program analysis
tmp:
image: /images/cc_0.png
legal_code_url: https://creativecommons.org/publicdomain/zero/1.0/legalcode
name: Creative Commons Public Domain Dedication (CC0 1.0)
short: CC0 (1.0)
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
---
_id: '10307'
abstract:
- lang: eng
text: Bacteria-host interactions represent a continuous trade-off between benefit
and risk. Thus, the host immune response is faced with a non-trivial problem –
accommodate beneficial commensals and remove harmful pathogens. This is especially
difficult as molecular patterns, such as lipopolysaccharide or specific surface
organelles such as pili, are conserved in both, commensal and pathogenic bacteria.
Type 1 pili, tightly regulated by phase variation, are considered an important
virulence factor of pathogenic bacteria as they facilitate invasion into host
cells. While invasion represents a de facto passive mechanism for pathogens to
escape the host immune response, we demonstrate a fundamental role of type 1 pili
as active modulators of the innate and adaptive immune response.
acknowledged_ssus:
- _id: LifeSc
- _id: Bio
- _id: PreCl
- _id: EM-Fac
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Kathrin
full_name: Tomasek, Kathrin
id: 3AEC8556-F248-11E8-B48F-1D18A9856A87
last_name: Tomasek
orcid: 0000-0003-3768-877X
citation:
ama: Tomasek K. Pathogenic Escherichia coli hijack the host immune response. 2021.
doi:10.15479/at:ista:10307
apa: Tomasek, K. (2021). Pathogenic Escherichia coli hijack the host immune response.
Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:10307
chicago: Tomasek, Kathrin. “Pathogenic Escherichia Coli Hijack the Host Immune Response.”
Institute of Science and Technology Austria, 2021. https://doi.org/10.15479/at:ista:10307.
ieee: K. Tomasek, “Pathogenic Escherichia coli hijack the host immune response,”
Institute of Science and Technology Austria, 2021.
ista: Tomasek K. 2021. Pathogenic Escherichia coli hijack the host immune response.
Institute of Science and Technology Austria.
mla: Tomasek, Kathrin. Pathogenic Escherichia Coli Hijack the Host Immune Response.
Institute of Science and Technology Austria, 2021, doi:10.15479/at:ista:10307.
short: K. Tomasek, Pathogenic Escherichia Coli Hijack the Host Immune Response,
Institute of Science and Technology Austria, 2021.
date_created: 2021-11-18T15:05:06Z
date_published: 2021-11-18T00:00:00Z
date_updated: 2023-09-07T13:34:38Z
day: '18'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: MiSi
- _id: CaGu
- _id: GradSch
doi: 10.15479/at:ista:10307
file:
- access_level: open_access
checksum: b39c9e0ef18d0484d537a67551effd02
content_type: application/pdf
creator: ktomasek
date_created: 2021-11-18T15:07:31Z
date_updated: 2022-12-20T23:30:05Z
embargo: 2022-11-18
file_id: '10308'
file_name: ThesisTomasekKathrin.pdf
file_size: 13266088
relation: main_file
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content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: ktomasek
date_created: 2021-11-18T15:07:46Z
date_updated: 2022-12-20T23:30:05Z
embargo_to: open_access
file_id: '10309'
file_name: ThesisTomasekKathrin.docx
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relation: source_file
file_date_updated: 2022-12-20T23:30:05Z
has_accepted_license: '1'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
page: '73'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '10316'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Michael K
full_name: Sixt, Michael K
id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87
last_name: Sixt
orcid: 0000-0002-4561-241X
- first_name: Calin C
full_name: Guet, Calin C
id: 47F8433E-F248-11E8-B48F-1D18A9856A87
last_name: Guet
orcid: 0000-0001-6220-2052
title: Pathogenic Escherichia coli hijack the host immune response
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
---
_id: '10316'
abstract:
- lang: eng
text: A key attribute of persistent or recurring bacterial infections is the ability
of the pathogen to evade the host’s immune response. Many Enterobacteriaceae express
type 1 pili, a pre-adapted virulence trait, to invade host epithelial cells and
establish persistent infections. However, the molecular mechanisms and strategies
by which bacteria actively circumvent the immune response of the host remain poorly
understood. Here, we identified CD14, the major co-receptor for lipopolysaccharide
detection, on dendritic cells as a previously undescribed binding partner of FimH,
the protein located at the tip of the type 1 pilus of Escherichia coli. The FimH
amino acids involved in CD14 binding are highly conserved across pathogenic and
non-pathogenic strains. Binding of pathogenic bacteria to CD14 lead to reduced
dendritic cell migration and blunted expression of co-stimulatory molecules, both
rate-limiting factors of T cell activation. While defining an active molecular
mechanism of immune evasion by pathogens, the interaction between FimH and CD14
represents a potential target to interfere with persistent and recurrent infections,
such as urinary tract infections or Crohn’s disease.
acknowledged_ssus:
- _id: Bio
- _id: PreCl
- _id: EM-Fac
acknowledgement: We thank Ulrich Dobrindt for providing UPEC strain CFT073, Vlad Gavra
and Maximilian Götz, Bor Kavčič, Jonna Alanko and Eva Kiermaier for help with experiments
and Robert Hauschild, Julian Stopp and Saren Tasciyan for help with data analysis.
We thank the IST Austria Scientific Service Units, especially the Bioimaging facility,
the Preclinical facility and the Electron microscopy facility for technical support,
Jakob Wallner and all members of the Guet and Sixt lab for fruitful discussions
and Daria Siekhaus for critically reading the manuscript. This work was supported
by grants from the Austrian Research Promotion Agency (FEMtech 868984) to I.G.,
the European Research Council (CoG 724373) and the Austrian Science Fund (FWF P29911)
to M.S.
article_processing_charge: No
author:
- first_name: Kathrin
full_name: Tomasek, Kathrin
id: 3AEC8556-F248-11E8-B48F-1D18A9856A87
last_name: Tomasek
orcid: 0000-0003-3768-877X
- first_name: Alexander F
full_name: Leithner, Alexander F
id: 3B1B77E4-F248-11E8-B48F-1D18A9856A87
last_name: Leithner
orcid: 0000-0002-1073-744X
- first_name: Ivana
full_name: Glatzová, Ivana
id: 727b3c7d-4939-11ec-89b3-b9b0750ab74d
last_name: Glatzová
- first_name: Michael S.
full_name: Lukesch, Michael S.
last_name: Lukesch
- first_name: Calin C
full_name: Guet, Calin C
id: 47F8433E-F248-11E8-B48F-1D18A9856A87
last_name: Guet
orcid: 0000-0001-6220-2052
- first_name: Michael K
full_name: Sixt, Michael K
id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87
last_name: Sixt
orcid: 0000-0002-4561-241X
citation:
ama: Tomasek K, Leithner AF, Glatzová I, Lukesch MS, Guet CC, Sixt MK. Type 1 piliated
uropathogenic Escherichia coli hijack the host immune response by binding to CD14.
bioRxiv. doi:10.1101/2021.10.18.464770
apa: Tomasek, K., Leithner, A. F., Glatzová, I., Lukesch, M. S., Guet, C. C., &
Sixt, M. K. (n.d.). Type 1 piliated uropathogenic Escherichia coli hijack the
host immune response by binding to CD14. bioRxiv. Cold Spring Harbor Laboratory.
https://doi.org/10.1101/2021.10.18.464770
chicago: Tomasek, Kathrin, Alexander F Leithner, Ivana Glatzová, Michael S. Lukesch,
Calin C Guet, and Michael K Sixt. “Type 1 Piliated Uropathogenic Escherichia Coli
Hijack the Host Immune Response by Binding to CD14.” BioRxiv. Cold Spring
Harbor Laboratory, n.d. https://doi.org/10.1101/2021.10.18.464770.
ieee: K. Tomasek, A. F. Leithner, I. Glatzová, M. S. Lukesch, C. C. Guet, and M.
K. Sixt, “Type 1 piliated uropathogenic Escherichia coli hijack the host immune
response by binding to CD14,” bioRxiv. Cold Spring Harbor Laboratory.
ista: Tomasek K, Leithner AF, Glatzová I, Lukesch MS, Guet CC, Sixt MK. Type 1 piliated
uropathogenic Escherichia coli hijack the host immune response by binding to CD14.
bioRxiv, 10.1101/2021.10.18.464770.
mla: Tomasek, Kathrin, et al. “Type 1 Piliated Uropathogenic Escherichia Coli Hijack
the Host Immune Response by Binding to CD14.” BioRxiv, Cold Spring Harbor
Laboratory, doi:10.1101/2021.10.18.464770.
short: K. Tomasek, A.F. Leithner, I. Glatzová, M.S. Lukesch, C.C. Guet, M.K. Sixt,
BioRxiv (n.d.).
date_created: 2021-11-19T12:24:16Z
date_published: 2021-10-18T00:00:00Z
date_updated: 2024-03-28T23:30:35Z
day: '18'
department:
- _id: CaGu
- _id: MiSi
doi: 10.1101/2021.10.18.464770
ec_funded: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2021.10.18.464770v1
month: '10'
oa: 1
oa_version: Preprint
project:
- _id: 25FE9508-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '724373'
name: Cellular navigation along spatial gradients
- _id: 26018E70-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29911
name: Mechanical adaptation of lamellipodial actin
publication: bioRxiv
publication_status: submitted
publisher: Cold Spring Harbor Laboratory
related_material:
record:
- id: '11843'
relation: later_version
status: public
- id: '10307'
relation: dissertation_contains
status: public
status: public
title: Type 1 piliated uropathogenic Escherichia coli hijack the host immune response
by binding to CD14
type: preprint
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2021'
...
---
_id: '9010'
abstract:
- lang: eng
text: Availability of the essential macronutrient nitrogen in soil plays a critical
role in plant growth, development, and impacts agricultural productivity. Plants
have evolved different strategies for sensing and responding to heterogeneous
nitrogen distribution. Modulation of root system architecture, including primary
root growth and branching, is among the most essential plant adaptions to ensure
adequate nitrogen acquisition. However, the immediate molecular pathways coordinating
the adjustment of root growth in response to distinct nitrogen sources, such as
nitrate or ammonium, are poorly understood. Here, we show that growth as manifested
by cell division and elongation is synchronized by coordinated auxin flux between
two adjacent outer tissue layers of the root. This coordination is achieved by
nitrate‐dependent dephosphorylation of the PIN2 auxin efflux carrier at a previously
uncharacterized phosphorylation site, leading to subsequent PIN2 lateralization
and thereby regulating auxin flow between adjacent tissues. A dynamic computer
model based on our experimental data successfully recapitulates experimental observations.
Our study provides mechanistic insights broadening our understanding of root growth
mechanisms in dynamic environments.
acknowledged_ssus:
- _id: Bio
acknowledgement: 'We acknowledge Gergely Molnar for critical reading of the manuscript,
Alexander Johnson for language editing and Yulija Salanenka for technical assistance.
Work in the Benkova laboratory was supported by the Austrian Science Fund (FWF01_I1774S)
to KO, RA and EB. Work in the Benkova laboratory was supported by the Austrian Science
Fund (FWF01_I1774S) to KO, RA and EB and by the DOC Fellowship Programme of the
AustrianAcademy of Sciences (25008) to C.A. Work in the Wabnik laboratory was supported
by the Programa de Atraccion de Talento 2017 (Comunidad deMadrid, 2017-T1/BIO-5654
to K.W.), Severo Ochoa Programme for Centres of Excellence in R&D from the Agencia
Estatal de Investigacion of Spain (grantSEV-2016-0672 (2017-2021) to K.W. via the
CBGP) and Programa Estatal de Generacion del Conocimiento y Fortalecimiento Científico
y Tecnologico del Sistema de I+D+I 2019 (PGC2018-093387-A-I00) from MICIU (to K.W.).
M.M.was supported by a postdoctoral contract associated to SEV-2016-0672.We acknowledge
the Bioimaging Facility in IST-Austria and the Advanced Microscopy Facility of the
Vienna Bio Center Core Facilities, member of the Vienna Bio Center Austria, for
use of the OMX v43D SIM microscope. AJ was supported by the Austrian Science Fund
(FWF): I03630 to J.F'
article_number: e106862
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Krisztina
full_name: Ötvös, Krisztina
id: 29B901B0-F248-11E8-B48F-1D18A9856A87
last_name: Ötvös
orcid: 0000-0002-5503-4983
- first_name: Marco
full_name: Marconi, Marco
last_name: Marconi
- first_name: Andrea
full_name: Vega, Andrea
last_name: Vega
- first_name: Jose
full_name: O’Brien, Jose
last_name: O’Brien
- first_name: Alexander J
full_name: Johnson, Alexander J
id: 46A62C3A-F248-11E8-B48F-1D18A9856A87
last_name: Johnson
orcid: 0000-0002-2739-8843
- first_name: Rashed
full_name: Abualia, Rashed
id: 4827E134-F248-11E8-B48F-1D18A9856A87
last_name: Abualia
orcid: 0000-0002-9357-9415
- first_name: Livio
full_name: Antonielli, Livio
last_name: Antonielli
- first_name: Juan C
full_name: Montesinos López, Juan C
id: 310A8E3E-F248-11E8-B48F-1D18A9856A87
last_name: Montesinos López
orcid: 0000-0001-9179-6099
- first_name: Yuzhou
full_name: Zhang, Yuzhou
id: 3B6137F2-F248-11E8-B48F-1D18A9856A87
last_name: Zhang
orcid: 0000-0003-2627-6956
- first_name: Shutang
full_name: Tan, Shutang
id: 2DE75584-F248-11E8-B48F-1D18A9856A87
last_name: Tan
orcid: 0000-0002-0471-8285
- first_name: Candela
full_name: Cuesta, Candela
id: 33A3C818-F248-11E8-B48F-1D18A9856A87
last_name: Cuesta
orcid: 0000-0003-1923-2410
- first_name: Christina
full_name: Artner, Christina
id: 45DF286A-F248-11E8-B48F-1D18A9856A87
last_name: Artner
- first_name: Eleonore
full_name: Bouguyon, Eleonore
last_name: Bouguyon
- first_name: Alain
full_name: Gojon, Alain
last_name: Gojon
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
- first_name: Rodrigo A.
full_name: Gutiérrez, Rodrigo A.
last_name: Gutiérrez
- first_name: Krzysztof T
full_name: Wabnik, Krzysztof T
id: 4DE369A4-F248-11E8-B48F-1D18A9856A87
last_name: Wabnik
orcid: 0000-0001-7263-0560
- first_name: Eva
full_name: Benková, Eva
id: 38F4F166-F248-11E8-B48F-1D18A9856A87
last_name: Benková
orcid: 0000-0002-8510-9739
citation:
ama: Ötvös K, Marconi M, Vega A, et al. Modulation of plant root growth by nitrogen
source-defined regulation of polar auxin transport. EMBO Journal. 2021;40(3).
doi:10.15252/embj.2020106862
apa: Ötvös, K., Marconi, M., Vega, A., O’Brien, J., Johnson, A. J., Abualia, R.,
… Benková, E. (2021). Modulation of plant root growth by nitrogen source-defined
regulation of polar auxin transport. EMBO Journal. Embo Press. https://doi.org/10.15252/embj.2020106862
chicago: Ötvös, Krisztina, Marco Marconi, Andrea Vega, Jose O’Brien, Alexander J
Johnson, Rashed Abualia, Livio Antonielli, et al. “Modulation of Plant Root Growth
by Nitrogen Source-Defined Regulation of Polar Auxin Transport.” EMBO Journal.
Embo Press, 2021. https://doi.org/10.15252/embj.2020106862.
ieee: K. Ötvös et al., “Modulation of plant root growth by nitrogen source-defined
regulation of polar auxin transport,” EMBO Journal, vol. 40, no. 3. Embo
Press, 2021.
ista: Ötvös K, Marconi M, Vega A, O’Brien J, Johnson AJ, Abualia R, Antonielli L,
Montesinos López JC, Zhang Y, Tan S, Cuesta C, Artner C, Bouguyon E, Gojon A,
Friml J, Gutiérrez RA, Wabnik KT, Benková E. 2021. Modulation of plant root growth
by nitrogen source-defined regulation of polar auxin transport. EMBO Journal.
40(3), e106862.
mla: Ötvös, Krisztina, et al. “Modulation of Plant Root Growth by Nitrogen Source-Defined
Regulation of Polar Auxin Transport.” EMBO Journal, vol. 40, no. 3, e106862,
Embo Press, 2021, doi:10.15252/embj.2020106862.
short: K. Ötvös, M. Marconi, A. Vega, J. O’Brien, A.J. Johnson, R. Abualia, L. Antonielli,
J.C. Montesinos López, Y. Zhang, S. Tan, C. Cuesta, C. Artner, E. Bouguyon, A.
Gojon, J. Friml, R.A. Gutiérrez, K.T. Wabnik, E. Benková, EMBO Journal 40 (2021).
date_created: 2021-01-17T23:01:12Z
date_published: 2021-02-01T00:00:00Z
date_updated: 2024-03-28T23:30:39Z
day: '01'
ddc:
- '580'
department:
- _id: JiFr
- _id: EvBe
doi: 10.15252/embj.2020106862
external_id:
isi:
- '000604645600001'
pmid:
- ' 33399250'
file:
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creator: dernst
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date_updated: 2021-02-11T12:28:29Z
file_id: '9110'
file_name: 2021_Embo_Otvos.pdf
file_size: 2358617
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file_date_updated: 2021-02-11T12:28:29Z
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intvolume: ' 40'
isi: 1
issue: '3'
language:
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month: '02'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 2542D156-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I 1774-B16
name: Hormone cross-talk drives nutrient dependent plant development
- _id: 2685A872-B435-11E9-9278-68D0E5697425
name: Hormonal regulation of plant adaptive responses to environmental signals
- _id: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
publication: EMBO Journal
publication_identifier:
eissn:
- '14602075'
issn:
- '02614189'
publication_status: published
publisher: Embo Press
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/a-plants-way-to-its-favorite-food/
record:
- id: '10303'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Modulation of plant root growth by nitrogen source-defined regulation of polar
auxin transport
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 40
year: '2021'
...
---
_id: '9913'
abstract:
- lang: eng
text: Nitrate commands genome-wide gene expression changes that impact metabolism,
physiology, plant growth, and development. In an effort to identify new components
involved in nitrate responses in plants, we analyze the Arabidopsis thaliana root
phosphoproteome in response to nitrate treatments via liquid chromatography coupled
to tandem mass spectrometry. 176 phosphoproteins show significant changes at 5
or 20 min after nitrate treatments. Proteins identified by 5 min include signaling
components such as kinases or transcription factors. In contrast, by 20 min, proteins
identified were associated with transporter activity or hormone metabolism functions,
among others. The phosphorylation profile of NITRATE TRANSPORTER 1.1 (NRT1.1)
mutant plants was significantly altered as compared to wild-type plants, confirming
its key role in nitrate signaling pathways that involves phosphorylation changes.
Integrative bioinformatics analysis highlights auxin transport as an important
mechanism modulated by nitrate signaling at the post-translational level. We validated
a new phosphorylation site in PIN2 and provide evidence that it functions in primary
and lateral root growth responses to nitrate.
acknowledgement: This work was supported by ANID—Millennium Science Initiative Program—ICN17_022,
Fondo de Desarrollo de Areas Prioritarias (FONDAP) Center for Genome Regulation
(15090007), ANID—Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)
1180759 (to RAG) and 1171631 (to AV). We would like to thank Unidad de Microscopía
Avanzada UC (UMA UC).
article_number: e51813
article_processing_charge: Yes
article_type: original
author:
- first_name: Andrea
full_name: Vega, Andrea
last_name: Vega
- first_name: Isabel
full_name: Fredes, Isabel
last_name: Fredes
- first_name: José
full_name: O’Brien, José
last_name: O’Brien
- first_name: Zhouxin
full_name: Shen, Zhouxin
last_name: Shen
- first_name: Krisztina
full_name: Ötvös, Krisztina
id: 29B901B0-F248-11E8-B48F-1D18A9856A87
last_name: Ötvös
orcid: 0000-0002-5503-4983
- first_name: Rashed
full_name: Abualia, Rashed
id: 4827E134-F248-11E8-B48F-1D18A9856A87
last_name: Abualia
orcid: 0000-0002-9357-9415
- first_name: Eva
full_name: Benková, Eva
id: 38F4F166-F248-11E8-B48F-1D18A9856A87
last_name: Benková
orcid: 0000-0002-8510-9739
- first_name: Steven P.
full_name: Briggs, Steven P.
last_name: Briggs
- first_name: Rodrigo A.
full_name: Gutiérrez, Rodrigo A.
last_name: Gutiérrez
citation:
ama: Vega A, Fredes I, O’Brien J, et al. Nitrate triggered phosphoproteome changes
and a PIN2 phosphosite modulating root system architecture. EMBO Reports.
2021;22(9). doi:10.15252/embr.202051813
apa: Vega, A., Fredes, I., O’Brien, J., Shen, Z., Ötvös, K., Abualia, R., … Gutiérrez,
R. A. (2021). Nitrate triggered phosphoproteome changes and a PIN2 phosphosite
modulating root system architecture. EMBO Reports. Wiley. https://doi.org/10.15252/embr.202051813
chicago: Vega, Andrea, Isabel Fredes, José O’Brien, Zhouxin Shen, Krisztina Ötvös,
Rashed Abualia, Eva Benková, Steven P. Briggs, and Rodrigo A. Gutiérrez. “Nitrate
Triggered Phosphoproteome Changes and a PIN2 Phosphosite Modulating Root System
Architecture.” EMBO Reports. Wiley, 2021. https://doi.org/10.15252/embr.202051813.
ieee: A. Vega et al., “Nitrate triggered phosphoproteome changes and a PIN2
phosphosite modulating root system architecture,” EMBO Reports, vol. 22,
no. 9. Wiley, 2021.
ista: Vega A, Fredes I, O’Brien J, Shen Z, Ötvös K, Abualia R, Benková E, Briggs
SP, Gutiérrez RA. 2021. Nitrate triggered phosphoproteome changes and a PIN2 phosphosite
modulating root system architecture. EMBO Reports. 22(9), e51813.
mla: Vega, Andrea, et al. “Nitrate Triggered Phosphoproteome Changes and a PIN2
Phosphosite Modulating Root System Architecture.” EMBO Reports, vol. 22,
no. 9, e51813, Wiley, 2021, doi:10.15252/embr.202051813.
short: A. Vega, I. Fredes, J. O’Brien, Z. Shen, K. Ötvös, R. Abualia, E. Benková,
S.P. Briggs, R.A. Gutiérrez, EMBO Reports 22 (2021).
date_created: 2021-08-15T22:01:30Z
date_published: 2021-09-06T00:00:00Z
date_updated: 2024-03-28T23:30:40Z
day: '06'
ddc:
- '580'
department:
- _id: EvBe
- _id: GradSch
doi: 10.15252/embr.202051813
external_id:
isi:
- '000681754200001'
pmid:
- '34357701 '
file:
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checksum: 750de03dc3b715c37090126c1548ba13
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creator: cchlebak
date_created: 2021-10-05T13:36:42Z
date_updated: 2021-10-05T13:36:42Z
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file_size: 3144854
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publication_identifier:
eissn:
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issn:
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publisher: Wiley
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related_material:
record:
- id: '10303'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Nitrate triggered phosphoproteome changes and a PIN2 phosphosite modulating
root system architecture
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 22
year: '2021'
...
---
_id: '10303'
abstract:
- lang: eng
text: 'Nitrogen is an essential macronutrient determining plant growth, development
and affecting agricultural productivity. Root, as a hub that perceives and integrates
local and systemic signals on the plant’s external and endogenous nitrogen resources,
communicates with other plant organs to consolidate their physiology and development
in accordance with actual nitrogen balance. Over the last years, numerous studies
demonstrated that these comprehensive developmental adaptations rely on the interaction
between pathways controlling nitrogen homeostasis and hormonal networks acting
globally in the plant body. However, molecular insights into how the information
about the nitrogen status is translated through hormonal pathways into specific
developmental output are lacking. In my work, I addressed so far poorly understood
mechanisms underlying root-to-shoot communication that lead to a rapid re-adjustment
of shoot growth and development after nitrate provision. Applying a combination
of molecular, cell, and developmental biology approaches, genetics and grafting
experiments as well as hormonal analytics, I identified and characterized an unknown
molecular framework orchestrating shoot development with a root nitrate sensory
system. '
acknowledged_ssus:
- _id: LifeSc
- _id: Bio
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Rashed
full_name: Abualia, Rashed
id: 4827E134-F248-11E8-B48F-1D18A9856A87
last_name: Abualia
orcid: 0000-0002-9357-9415
citation:
ama: Abualia R. Role of hormones in nitrate regulated growth. 2021. doi:10.15479/at:ista:10303
apa: Abualia, R. (2021). Role of hormones in nitrate regulated growth. Institute
of Science and Technology Austria. https://doi.org/10.15479/at:ista:10303
chicago: Abualia, Rashed. “Role of Hormones in Nitrate Regulated Growth.” Institute
of Science and Technology Austria, 2021. https://doi.org/10.15479/at:ista:10303.
ieee: R. Abualia, “Role of hormones in nitrate regulated growth,” Institute of Science
and Technology Austria, 2021.
ista: Abualia R. 2021. Role of hormones in nitrate regulated growth. Institute of
Science and Technology Austria.
mla: Abualia, Rashed. Role of Hormones in Nitrate Regulated Growth. Institute
of Science and Technology Austria, 2021, doi:10.15479/at:ista:10303.
short: R. Abualia, Role of Hormones in Nitrate Regulated Growth, Institute of Science
and Technology Austria, 2021.
date_created: 2021-11-18T11:20:59Z
date_published: 2021-11-22T00:00:00Z
date_updated: 2023-09-19T14:42:45Z
day: '22'
ddc:
- '580'
- '581'
degree_awarded: PhD
department:
- _id: GradSch
- _id: EvBe
doi: 10.15479/at:ista:10303
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language:
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page: '139'
publication_identifier:
issn:
- 2663-337X
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publisher: Institute of Science and Technology Austria
related_material:
record:
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status: public
- id: '9913'
relation: part_of_dissertation
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status: public
status: public
supervisor:
- first_name: Eva
full_name: Benková, Eva
id: 38F4F166-F248-11E8-B48F-1D18A9856A87
last_name: Benková
orcid: 0000-0002-8510-9739
title: Role of hormones in nitrate regulated growth
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
---
_id: '9962'
abstract:
- lang: eng
text: The brain is one of the largest and most complex organs and it is composed
of billions of neurons that communicate together enabling e.g. consciousness.
The cerebral cortex is the largest site of neural integration in the central nervous
system. Concerted radial migration of newly born cortical projection neurons,
from their birthplace to their final position, is a key step in the assembly of
the cerebral cortex. The cellular and molecular mechanisms regulating radial neuronal
migration in vivo are however still unclear. Recent evidence suggests that distinct
signaling cues act cell-autonomously but differentially at certain steps during
the overall migration process. Moreover, functional analysis of genetic mosaics
(mutant neurons present in wild-type/heterozygote environment) using the MADM
(Mosaic Analysis with Double Markers) analyses in comparison to global knockout
also indicate a significant degree of non-cell-autonomous and/or community effects
in the control of cortical neuron migration. The interactions of cell-intrinsic
(cell-autonomous) and cell-extrinsic (non-cell-autonomous) components are largely
unknown. In part of this thesis work we established a MADM-based experimental
strategy for the quantitative analysis of cell-autonomous gene function versus
non-cell-autonomous and/or community effects. The direct comparison of mutant
neurons from the genetic mosaic (cell-autonomous) to mutant neurons in the conditional
and/or global knockout (cell-autonomous + non-cell-autonomous) allows to quantitatively
analyze non-cell-autonomous effects. Such analysis enable the high-resolution
analysis of projection neuron migration dynamics in distinct environments with
concomitant isolation of genomic and proteomic profiles. Using these experimental
paradigms and in combination with computational modeling we show and characterize
the nature of non-cell-autonomous effects to coordinate radial neuron migration.
Furthermore, this thesis discusses recent developments in neurodevelopment with
focus on neuronal polarization and non-cell-autonomous mechanisms in neuronal
migration.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Andi H
full_name: Hansen, Andi H
id: 38853E16-F248-11E8-B48F-1D18A9856A87
last_name: Hansen
citation:
ama: Hansen AH. Cell-autonomous gene function and non-cell-autonomous effects in
radial projection neuron migration. 2021. doi:10.15479/at:ista:9962
apa: Hansen, A. H. (2021). Cell-autonomous gene function and non-cell-autonomous
effects in radial projection neuron migration. Institute of Science and Technology
Austria. https://doi.org/10.15479/at:ista:9962
chicago: Hansen, Andi H. “Cell-Autonomous Gene Function and Non-Cell-Autonomous
Effects in Radial Projection Neuron Migration.” Institute of Science and Technology
Austria, 2021. https://doi.org/10.15479/at:ista:9962.
ieee: A. H. Hansen, “Cell-autonomous gene function and non-cell-autonomous effects
in radial projection neuron migration,” Institute of Science and Technology Austria,
2021.
ista: Hansen AH. 2021. Cell-autonomous gene function and non-cell-autonomous effects
in radial projection neuron migration. Institute of Science and Technology Austria.
mla: Hansen, Andi H. Cell-Autonomous Gene Function and Non-Cell-Autonomous Effects
in Radial Projection Neuron Migration. Institute of Science and Technology
Austria, 2021, doi:10.15479/at:ista:9962.
short: A.H. Hansen, Cell-Autonomous Gene Function and Non-Cell-Autonomous Effects
in Radial Projection Neuron Migration, Institute of Science and Technology Austria,
2021.
date_created: 2021-08-29T12:36:50Z
date_published: 2021-09-02T00:00:00Z
date_updated: 2023-09-22T09:58:30Z
day: '02'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: SiHi
doi: 10.15479/at:ista:9962
file:
- access_level: closed
checksum: 66b56f5b988b233dc66a4f4b4fb2cdfe
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creator: ahansen
date_created: 2021-08-30T09:17:39Z
date_updated: 2022-09-03T22:30:04Z
embargo_to: open_access
file_id: '9971'
file_name: Thesis_Hansen.docx
file_size: 10629190
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checksum: 204fa40321a1c6289b68c473634c4bf3
content_type: application/pdf
creator: ahansen
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date_updated: 2022-09-03T22:30:04Z
embargo: 2022-09-02
file_id: '9972'
file_name: Thesis_Hansen_PDFA-1a.pdf
file_size: 13457469
relation: main_file
file_date_updated: 2022-09-03T22:30:04Z
has_accepted_license: '1'
keyword:
- Neuronal migration
- Non-cell-autonomous
- Cell-autonomous
- Neurodevelopmental disease
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '182'
project:
- _id: 2625A13E-B435-11E9-9278-68D0E5697425
grant_number: '24812'
name: Molecular Mechanisms of Radial Neuronal Migration
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '8569'
relation: part_of_dissertation
status: public
- id: '960'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Simon
full_name: Hippenmeyer, Simon
id: 37B36620-F248-11E8-B48F-1D18A9856A87
last_name: Hippenmeyer
orcid: 0000-0003-2279-1061
title: Cell-autonomous gene function and non-cell-autonomous effects in radial projection
neuron migration
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
---
_id: '9428'
abstract:
- lang: eng
text: Thermalization is the inevitable fate of many complex quantum systems, whose
dynamics allow them to fully explore the vast configuration space regardless of
the initial state---the behaviour known as quantum ergodicity. In a quest for
experimental realizations of coherent long-time dynamics, efforts have focused
on ergodicity-breaking mechanisms, such as integrability and localization. The
recent discovery of persistent revivals in quantum simulators based on Rydberg
atoms have pointed to the existence of a new type of behaviour where the system
rapidly relaxes for most initial conditions, while certain initial states give
rise to non-ergodic dynamics. This collective effect has been named ”quantum many-body
scarring’by analogy with a related form of weak ergodicity breaking that occurs
for a single particle inside a stadium billiard potential. In this Review, we
provide a pedagogical introduction to quantum many-body scars and highlight the
emerging connections with the semiclassical quantization of many-body systems.
We discuss the relation between scars and more general routes towards weak violations
of ergodicity due to embedded algebras and non-thermal eigenstates, and highlight
possible applications of scars in quantum technology.
acknowledgement: We thank our collaborators K. Bull, S. Choi, J.-Y. Desaules, W. W.
Ho, A. Hudomal, M. Lukin, I. Martin, H. Pichler, N. Regnault, I. Vasić and in particular
A. Michailidis and C. Turner, without whom this work would not have been possible.
We also benefited from discussions with E. Altman, B. A. Bernevig, A. Chandran,
P. Fendley, V. Khemani and L. Motrunich. M.S. was supported by the European Research
Council (ERC) under the European Union’s Horizon 2020 research and innovation programme
(grant agreement no. 850899). D.A.A. was supported by the Swiss National Science
Foundation and by the ERC under the European Union’s Horizon 2020 research and innovation
programme (grant agreement no. 864597). Z.P. acknowledges support by the Leverhulme
Trust Research Leadership Award RL-2019-015.
article_processing_charge: No
article_type: review
author:
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Dmitry A.
full_name: Abanin, Dmitry A.
last_name: Abanin
- first_name: Zlatko
full_name: Papić, Zlatko
last_name: Papić
citation:
ama: Serbyn M, Abanin DA, Papić Z. Quantum many-body scars and weak breaking of
ergodicity. Nature Physics. 2021;17(6):675–685. doi:10.1038/s41567-021-01230-2
apa: Serbyn, M., Abanin, D. A., & Papić, Z. (2021). Quantum many-body scars
and weak breaking of ergodicity. Nature Physics. Nature Research. https://doi.org/10.1038/s41567-021-01230-2
chicago: Serbyn, Maksym, Dmitry A. Abanin, and Zlatko Papić. “Quantum Many-Body
Scars and Weak Breaking of Ergodicity.” Nature Physics. Nature Research,
2021. https://doi.org/10.1038/s41567-021-01230-2.
ieee: M. Serbyn, D. A. Abanin, and Z. Papić, “Quantum many-body scars and weak breaking
of ergodicity,” Nature Physics, vol. 17, no. 6. Nature Research, pp. 675–685,
2021.
ista: Serbyn M, Abanin DA, Papić Z. 2021. Quantum many-body scars and weak breaking
of ergodicity. Nature Physics. 17(6), 675–685.
mla: Serbyn, Maksym, et al. “Quantum Many-Body Scars and Weak Breaking of Ergodicity.”
Nature Physics, vol. 17, no. 6, Nature Research, 2021, pp. 675–685, doi:10.1038/s41567-021-01230-2.
short: M. Serbyn, D.A. Abanin, Z. Papić, Nature Physics 17 (2021) 675–685.
date_created: 2021-05-28T09:03:50Z
date_published: 2021-06-01T00:00:00Z
date_updated: 2023-10-18T08:20:59Z
day: '01'
ddc:
- '539'
department:
- _id: MaSe
doi: 10.1038/s41567-021-01230-2
ec_funded: 1
external_id:
arxiv:
- '2011.09486'
isi:
- '000655563800002'
file:
- access_level: open_access
checksum: 316ed42ea1b42b0f1a3025bb476266fc
content_type: application/pdf
creator: patrickd
date_created: 2021-09-20T09:27:43Z
date_updated: 2021-12-02T23:30:03Z
embargo: 2021-12-01
file_id: '10026'
file_name: RevisedQMBSreview.pdf
file_size: 10028836
relation: main_file
file_date_updated: 2021-12-02T23:30:03Z
has_accepted_license: '1'
intvolume: ' 17'
isi: 1
issue: '6'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Preprint
page: 675–685
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Nature Physics
publication_identifier:
eissn:
- 1745-2481
publication_status: published
publisher: Nature Research
quality_controlled: '1'
status: public
title: Quantum many-body scars and weak breaking of ergodicity
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 17
year: '2021'
...
---
_id: '8931'
abstract:
- lang: eng
text: "Auxin is a major plant growth regulator, but current models on auxin perception
and signaling cannot explain the whole plethora of auxin effects, in particular
those associated with rapid responses. A possible candidate for a component of
additional auxin perception mechanisms is the AUXIN BINDING PROTEIN 1 (ABP1),
whose function in planta remains unclear.\r\nHere we combined expression analysis
with gain- and loss-of-function approaches to analyze the role of ABP1 in plant
development. ABP1 shows a broad expression largely overlapping with, but not regulated
by, transcriptional auxin response activity. Furthermore, ABP1 activity is not
essential for the transcriptional auxin signaling. Genetic in planta analysis
revealed that abp1 loss-of-function mutants show largely normal development with
minor defects in bolting. On the other hand, ABP1 gain-of-function alleles show
a broad range of growth and developmental defects, including root and hypocotyl
growth and bending, lateral root and leaf development, bolting, as well as response
to heat stress. At the cellular level, ABP1 gain-of-function leads to impaired
auxin effect on PIN polar distribution and affects BFA-sensitive PIN intracellular
aggregation.\r\nThe gain-of-function analysis suggests a broad, but still mechanistically
unclear involvement of ABP1 in plant development, possibly masked in abp1 loss-of-function
mutants by a functional redundancy."
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
acknowledgement: We would like to acknowledge Bioimaging and Life Science Facilities
at IST Austria for continuous support and also the Plant Sciences Core Facility
of CEITEC Masaryk University for their support with obtaining a part of the scientific
data. We gratefully acknowledge Lindy Abas for help with ABP1::GFP-ABP1 construct
design. This project has received funding from the European Research Council (ERC)
under the European Union’s Horizon 2020 research and innovation program [grant agreement
no. 742985] and Austrian Science Fund (FWF) [I 3630-B25] to J.F.; DOC Fellowship
of the Austrian Academy of Sciences to L.L.; the European Structural and Investment
Funds, Operational Programme Research, Development and Education - Project „MSCAfellow@MUNI“
[CZ.02.2.69/0.0/0.0/17_050/0008496] to M.P.. This project was also supported by
the Czech Science Foundation [GA 20-20860Y] to M.Z and MEYS CR [project no.CZ.02.1.01/0.0/0.0/16_019/0000738]
to M. Č.
article_number: '110750'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Zuzana
full_name: Gelová, Zuzana
id: 0AE74790-0E0B-11E9-ABC7-1ACFE5697425
last_name: Gelová
orcid: 0000-0003-4783-1752
- first_name: Michelle C
full_name: Gallei, Michelle C
id: 35A03822-F248-11E8-B48F-1D18A9856A87
last_name: Gallei
orcid: 0000-0003-1286-7368
- first_name: Markéta
full_name: Pernisová, Markéta
last_name: Pernisová
- first_name: Géraldine
full_name: Brunoud, Géraldine
last_name: Brunoud
- first_name: Xixi
full_name: Zhang, Xixi
id: 61A66458-47E9-11EA-85BA-8AEAAF14E49A
last_name: Zhang
orcid: 0000-0001-7048-4627
- first_name: Matous
full_name: Glanc, Matous
id: 1AE1EA24-02D0-11E9-9BAA-DAF4881429F2
last_name: Glanc
orcid: 0000-0003-0619-7783
- first_name: Lanxin
full_name: Li, Lanxin
id: 367EF8FA-F248-11E8-B48F-1D18A9856A87
last_name: Li
orcid: 0000-0002-5607-272X
- first_name: Jaroslav
full_name: Michalko, Jaroslav
id: 483727CA-F248-11E8-B48F-1D18A9856A87
last_name: Michalko
- first_name: Zlata
full_name: Pavlovicova, Zlata
last_name: Pavlovicova
- first_name: Inge
full_name: Verstraeten, Inge
id: 362BF7FE-F248-11E8-B48F-1D18A9856A87
last_name: Verstraeten
orcid: 0000-0001-7241-2328
- first_name: Huibin
full_name: Han, Huibin
id: 31435098-F248-11E8-B48F-1D18A9856A87
last_name: Han
- first_name: Jakub
full_name: Hajny, Jakub
id: 4800CC20-F248-11E8-B48F-1D18A9856A87
last_name: Hajny
orcid: 0000-0003-2140-7195
- first_name: Robert
full_name: Hauschild, Robert
id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87
last_name: Hauschild
orcid: 0000-0001-9843-3522
- first_name: Milada
full_name: Čovanová, Milada
last_name: Čovanová
- first_name: Marta
full_name: Zwiewka, Marta
last_name: Zwiewka
- first_name: Lukas
full_name: Hörmayer, Lukas
id: 2EEE7A2A-F248-11E8-B48F-1D18A9856A87
last_name: Hörmayer
orcid: 0000-0001-8295-2926
- first_name: Matyas
full_name: Fendrych, Matyas
id: 43905548-F248-11E8-B48F-1D18A9856A87
last_name: Fendrych
orcid: 0000-0002-9767-8699
- first_name: Tongda
full_name: Xu, Tongda
last_name: Xu
- first_name: Teva
full_name: Vernoux, Teva
last_name: Vernoux
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Gelová Z, Gallei MC, Pernisová M, et al. Developmental roles of auxin binding
protein 1 in Arabidopsis thaliana. Plant Science. 2021;303. doi:10.1016/j.plantsci.2020.110750
apa: Gelová, Z., Gallei, M. C., Pernisová, M., Brunoud, G., Zhang, X., Glanc, M.,
… Friml, J. (2021). Developmental roles of auxin binding protein 1 in Arabidopsis
thaliana. Plant Science. Elsevier. https://doi.org/10.1016/j.plantsci.2020.110750
chicago: Gelová, Zuzana, Michelle C Gallei, Markéta Pernisová, Géraldine Brunoud,
Xixi Zhang, Matous Glanc, Lanxin Li, et al. “Developmental Roles of Auxin Binding
Protein 1 in Arabidopsis Thaliana.” Plant Science. Elsevier, 2021. https://doi.org/10.1016/j.plantsci.2020.110750.
ieee: Z. Gelová et al., “Developmental roles of auxin binding protein 1 in
Arabidopsis thaliana,” Plant Science, vol. 303. Elsevier, 2021.
ista: Gelová Z, Gallei MC, Pernisová M, Brunoud G, Zhang X, Glanc M, Li L, Michalko
J, Pavlovicova Z, Verstraeten I, Han H, Hajny J, Hauschild R, Čovanová M, Zwiewka
M, Hörmayer L, Fendrych M, Xu T, Vernoux T, Friml J. 2021. Developmental roles
of auxin binding protein 1 in Arabidopsis thaliana. Plant Science. 303, 110750.
mla: Gelová, Zuzana, et al. “Developmental Roles of Auxin Binding Protein 1 in Arabidopsis
Thaliana.” Plant Science, vol. 303, 110750, Elsevier, 2021, doi:10.1016/j.plantsci.2020.110750.
short: Z. Gelová, M.C. Gallei, M. Pernisová, G. Brunoud, X. Zhang, M. Glanc, L.
Li, J. Michalko, Z. Pavlovicova, I. Verstraeten, H. Han, J. Hajny, R. Hauschild,
M. Čovanová, M. Zwiewka, L. Hörmayer, M. Fendrych, T. Xu, T. Vernoux, J. Friml,
Plant Science 303 (2021).
date_created: 2020-12-09T14:48:28Z
date_published: 2021-02-01T00:00:00Z
date_updated: 2024-03-28T23:30:44Z
day: '01'
ddc:
- '580'
department:
- _id: JiFr
- _id: Bio
doi: 10.1016/j.plantsci.2020.110750
ec_funded: 1
external_id:
isi:
- '000614154500001'
pmid:
- '33487339'
file:
- access_level: open_access
checksum: a7f2562bdca62d67dfa88e271b62a629
content_type: application/pdf
creator: dernst
date_created: 2021-02-04T07:49:25Z
date_updated: 2021-02-04T07:49:25Z
file_id: '9083'
file_name: 2021_PlantScience_Gelova.pdf
file_size: 12563728
relation: main_file
success: 1
file_date_updated: 2021-02-04T07:49:25Z
has_accepted_license: '1'
intvolume: ' 303'
isi: 1
keyword:
- Agronomy and Crop Science
- Plant Science
- Genetics
- General Medicine
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
- _id: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
- _id: 26B4D67E-B435-11E9-9278-68D0E5697425
grant_number: '25351'
name: 'A Case Study of Plant Growth Regulation: Molecular Mechanism of Auxin-mediated
Rapid Growth Inhibition in Arabidopsis Root'
publication: Plant Science
publication_identifier:
issn:
- 0168-9452
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
record:
- id: '11626'
relation: dissertation_contains
status: public
- id: '10083'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Developmental roles of auxin binding protein 1 in Arabidopsis thaliana
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 303
year: '2021'
...
---
_id: '9287'
abstract:
- lang: eng
text: "The phytohormone auxin and its directional transport through tissues are
intensively studied. However, a mechanistic understanding of auxin-mediated feedback
on endocytosis and polar distribution of PIN auxin transporters remains limited
due to contradictory observations and interpretations. Here, we used state-of-the-art
methods to reexamine the\r\nauxin effects on PIN endocytic trafficking. We used
high auxin concentrations or longer treatments versus lower concentrations and
shorter treatments of natural (IAA) and synthetic (NAA) auxins to distinguish
between specific and nonspecific effects. Longer treatments of both auxins interfere
with Brefeldin A-mediated intracellular PIN2 accumulation and also with general
aggregation of endomembrane compartments. NAA treatment decreased the internalization
of the endocytic tracer dye, FM4-64; however, NAA treatment also affected the
number, distribution, and compartment identity of the early endosome/trans-Golgi
network (EE/TGN), rendering the FM4-64 endocytic assays at high NAA concentrations
unreliable. To circumvent these nonspecific effects of NAA and IAA affecting the
endomembrane system, we opted for alternative approaches visualizing the endocytic
events directly at the plasma membrane (PM). Using Total Internal Reflection Fluorescence
(TIRF) microscopy, we saw no significant effects of IAA or NAA treatments on the
incidence and dynamics of clathrin foci, implying that these treatments do not
affect the overall endocytosis rate. However, both NAA and IAA at low concentrations
rapidly and specifically promoted endocytosis of photo-converted PIN2 from the
PM. These analyses identify a specific effect of NAA and IAA on PIN2 endocytosis,
thus contributing to its\r\npolarity maintenance and furthermore illustrate that
high auxin levels have nonspecific effects on trafficking and endomembrane compartments. "
acknowledged_ssus:
- _id: M-Shop
- _id: Bio
acknowledgement: 'We thank Ivan Kulik for developing the Chip’n’Dale apparatus with
Lanxin Li; the IST machine shop and the Bioimaging facility for their excellent
support; Matouš Glanc and Matyáš Fendrych for their valuable discussions and help;
Barbara Casillas-Perez for her help with statistics. This project has received funding
from the European Research Council (ERC) under the European Union''s Horizon 2020
research and innovation program (grant agreement No 742985). A.J. is supported by
funding from the Austrian Science Fund (FWF): I3630B25 to J.F. '
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Madhumitha
full_name: Narasimhan, Madhumitha
id: 44BF24D0-F248-11E8-B48F-1D18A9856A87
last_name: Narasimhan
orcid: 0000-0002-8600-0671
- first_name: Michelle C
full_name: Gallei, Michelle C
id: 35A03822-F248-11E8-B48F-1D18A9856A87
last_name: Gallei
orcid: 0000-0003-1286-7368
- first_name: Shutang
full_name: Tan, Shutang
id: 2DE75584-F248-11E8-B48F-1D18A9856A87
last_name: Tan
orcid: 0000-0002-0471-8285
- first_name: Alexander J
full_name: Johnson, Alexander J
id: 46A62C3A-F248-11E8-B48F-1D18A9856A87
last_name: Johnson
orcid: 0000-0002-2739-8843
- first_name: Inge
full_name: Verstraeten, Inge
id: 362BF7FE-F248-11E8-B48F-1D18A9856A87
last_name: Verstraeten
orcid: 0000-0001-7241-2328
- first_name: Lanxin
full_name: Li, Lanxin
id: 367EF8FA-F248-11E8-B48F-1D18A9856A87
last_name: Li
orcid: 0000-0002-5607-272X
- first_name: Lesia
full_name: Rodriguez Solovey, Lesia
id: 3922B506-F248-11E8-B48F-1D18A9856A87
last_name: Rodriguez Solovey
orcid: 0000-0002-7244-7237
- first_name: Huibin
full_name: Han, Huibin
id: 31435098-F248-11E8-B48F-1D18A9856A87
last_name: Han
- first_name: E
full_name: Himschoot, E
last_name: Himschoot
- first_name: R
full_name: Wang, R
last_name: Wang
- first_name: S
full_name: Vanneste, S
last_name: Vanneste
- first_name: J
full_name: Sánchez-Simarro, J
last_name: Sánchez-Simarro
- first_name: F
full_name: Aniento, F
last_name: Aniento
- first_name: Maciek
full_name: Adamowski, Maciek
id: 45F536D2-F248-11E8-B48F-1D18A9856A87
last_name: Adamowski
orcid: 0000-0001-6463-5257
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Narasimhan M, Gallei MC, Tan S, et al. Systematic analysis of specific and
nonspecific auxin effects on endocytosis and trafficking. Plant Physiology.
2021;186(2):1122–1142. doi:10.1093/plphys/kiab134
apa: Narasimhan, M., Gallei, M. C., Tan, S., Johnson, A. J., Verstraeten, I., Li,
L., … Friml, J. (2021). Systematic analysis of specific and nonspecific auxin
effects on endocytosis and trafficking. Plant Physiology. Oxford University
Press. https://doi.org/10.1093/plphys/kiab134
chicago: Narasimhan, Madhumitha, Michelle C Gallei, Shutang Tan, Alexander J Johnson,
Inge Verstraeten, Lanxin Li, Lesia Rodriguez Solovey, et al. “Systematic Analysis
of Specific and Nonspecific Auxin Effects on Endocytosis and Trafficking.” Plant
Physiology. Oxford University Press, 2021. https://doi.org/10.1093/plphys/kiab134.
ieee: M. Narasimhan et al., “Systematic analysis of specific and nonspecific
auxin effects on endocytosis and trafficking,” Plant Physiology, vol. 186,
no. 2. Oxford University Press, pp. 1122–1142, 2021.
ista: Narasimhan M, Gallei MC, Tan S, Johnson AJ, Verstraeten I, Li L, Rodriguez
Solovey L, Han H, Himschoot E, Wang R, Vanneste S, Sánchez-Simarro J, Aniento
F, Adamowski M, Friml J. 2021. Systematic analysis of specific and nonspecific
auxin effects on endocytosis and trafficking. Plant Physiology. 186(2), 1122–1142.
mla: Narasimhan, Madhumitha, et al. “Systematic Analysis of Specific and Nonspecific
Auxin Effects on Endocytosis and Trafficking.” Plant Physiology, vol. 186,
no. 2, Oxford University Press, 2021, pp. 1122–1142, doi:10.1093/plphys/kiab134.
short: M. Narasimhan, M.C. Gallei, S. Tan, A.J. Johnson, I. Verstraeten, L. Li,
L. Rodriguez Solovey, H. Han, E. Himschoot, R. Wang, S. Vanneste, J. Sánchez-Simarro,
F. Aniento, M. Adamowski, J. Friml, Plant Physiology 186 (2021) 1122–1142.
date_created: 2021-03-26T12:08:38Z
date_published: 2021-06-01T00:00:00Z
date_updated: 2024-03-28T23:30:44Z
day: '01'
ddc:
- '580'
department:
- _id: JiFr
doi: 10.1093/plphys/kiab134
ec_funded: 1
external_id:
isi:
- '000671555900031'
pmid:
- '33734402'
file:
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checksum: 532bb9469d3b665907f06df8c383eade
content_type: application/pdf
creator: cziletti
date_created: 2021-11-11T15:07:51Z
date_updated: 2021-11-11T15:07:51Z
file_id: '10273'
file_name: 2021_PlantPhysio_Narasimhan.pdf
file_size: 2289127
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has_accepted_license: '1'
intvolume: ' 186'
isi: 1
issue: '2'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 1122–1142
pmid: 1
project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
- _id: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
publication: Plant Physiology
publication_identifier:
eissn:
- 1532-2548
issn:
- 0032-0889
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: 10.1093/plphys/kiab380
record:
- id: '11626'
relation: dissertation_contains
status: public
- id: '10083'
relation: dissertation_contains
status: public
status: public
title: Systematic analysis of specific and nonspecific auxin effects on endocytosis
and trafficking
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 186
year: '2021'
...
---
_id: '10083'
abstract:
- lang: eng
text: "Plant motions occur across a wide spectrum of timescales, ranging from seed
dispersal through bursting (milliseconds) and stomatal opening (minutes) to long-term
adaptation of gross architecture. Relatively fast motions include water-driven
growth as exemplified by root cell expansion under abiotic/biotic stresses or
during gravitropism. A showcase is a root growth inhibition in 30 seconds triggered
by the phytohormone auxin. However, the cellular and molecular mechanisms are
still largely unknown. This thesis covers the studies about this topic as follows.
By taking advantage of microfluidics combined with live imaging, pharmaceutical
tools, and transgenic lines, we examined the kinetics of and causal relationship
among various auxininduced rapid cellular changes in root growth, apoplastic pH,
cytosolic Ca2+, cortical microtubule (CMT) orientation, and vacuolar morphology.
We revealed that CMT reorientation and vacuolar constriction are the consequence
of growth itself instead of responding directly to auxin. In contrast, auxin induces
apoplast alkalinization to rapidly inhibit root growth in 30 seconds. This auxin-triggered
apoplast alkalinization results from rapid H+- influx that is contributed by Ca2+
inward channel CYCLIC NUCLEOTIDE-GATED CHANNEL 14 (CNGC14)-dependent Ca2+ signaling.
To dissect which auxin signaling mediates the rapid apoplast alkalinization, we\r\ncombined
microfluidics and genetic engineering to verify that TIR1/AFB receptors conduct
a non-transcriptional regulation on Ca2+ and H+ -influx. This non-canonical pathway
is mostly mediated by the cytosolic portion of TIR1/AFB. On the other hand, we
uncovered, using biochemical and phospho-proteomic analysis, that auxin cell surface
signaling component TRANSMEMBRANE KINASE 1 (TMK1) plays a negative role during
auxin-trigger apoplast\r\nalkalinization and root growth inhibition through directly
activating PM H+ -ATPases. Therefore, we discovered that PM H+ -ATPases counteract
instead of mediate the auxintriggered rapid H+ -influx, and that TIR1/AFB and
TMK1 regulate root growth antagonistically. This opposite effect of TIR1/AFB and
TMK1 is consistent during auxin-induced hypocotyl elongation, leading us to explore
the relation of two signaling pathways. Assisted with biochemistry and fluorescent
imaging, we verified for the first time that TIR1/AFB and TMK1 can interact with
each other. The ability of TIR1/AFB binding to membrane lipid provides a basis
for the interaction of plasma membrane- and cytosol-localized proteins.\r\nBesides,
transgenic analysis combined with genetic engineering and biochemistry showed
that vi\r\nthey do function in the same pathway. Particularly, auxin-induced
TMK1 increase is TIR1/AFB dependent, suggesting TIR1/AFB regulation on TMK1. Conversely,
TMK1 also regulates TIR1/AFB protein levels and thus auxin canonical signaling.
To follow the study of rapid growth regulation, we analyzed another rapid growth
regulator, signaling peptide RALF1. We showed that RALF1 also triggers a rapid
and reversible growth inhibition caused by H + influx, highly resembling but not
dependent on auxin. Besides, RALF1 promotes auxin biosynthesis by increasing expression
of auxin biosynthesis enzyme YUCCAs and thus induces auxin signaling in ca. 1
hour, contributing to the sustained RALF1-triggered growth inhibition. These studies
collectively contribute to understanding rapid regulation on plant cell\r\ngrowth,
novel auxin signaling pathway as well as auxin-peptide crosstalk. "
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Lanxin
full_name: Li, Lanxin
last_name: Li
citation:
ama: Li L. Rapid cell growth regulation in Arabidopsis. 2021. doi:10.15479/at:ista:10083
apa: Li, L. (2021). Rapid cell growth regulation in Arabidopsis. Institute
of Science and Technology Austria. https://doi.org/10.15479/at:ista:10083
chicago: Li, Lanxin. “Rapid Cell Growth Regulation in Arabidopsis.” Institute of
Science and Technology Austria, 2021. https://doi.org/10.15479/at:ista:10083.
ieee: L. Li, “Rapid cell growth regulation in Arabidopsis,” Institute of Science
and Technology Austria, 2021.
ista: Li L. 2021. Rapid cell growth regulation in Arabidopsis. Institute of Science
and Technology Austria.
mla: Li, Lanxin. Rapid Cell Growth Regulation in Arabidopsis. Institute of
Science and Technology Austria, 2021, doi:10.15479/at:ista:10083.
short: L. Li, Rapid Cell Growth Regulation in Arabidopsis, Institute of Science
and Technology Austria, 2021.
date_created: 2021-10-04T13:33:10Z
date_published: 2021-10-06T00:00:00Z
date_updated: 2023-10-31T19:30:02Z
day: '06'
ddc:
- '575'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JiFr
doi: 10.15479/at:ista:10083
ec_funded: 1
file:
- access_level: open_access
checksum: 3b2f55b3b8ae05337a0dcc1cd8595b10
content_type: application/pdf
creator: cchlebak
date_created: 2021-10-14T08:00:07Z
date_updated: 2022-12-20T23:30:03Z
embargo: 2022-10-14
file_id: '10138'
file_name: 0._IST_Austria_Thesis_Lanxin_Li_1014_pdftron.pdf
file_size: 8616142
relation: main_file
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checksum: f23ed258ca894f6aabf58b0c128bf242
content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: cchlebak
date_created: 2021-10-14T08:00:13Z
date_updated: 2022-12-20T23:30:03Z
embargo_to: open_access
file_id: '10139'
file_name: 0._IST_Austria_Thesis_Lanxin_Li_1014.docx
file_size: 15058499
relation: source_file
file_date_updated: 2022-12-20T23:30:03Z
has_accepted_license: '1'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
- _id: 26B4D67E-B435-11E9-9278-68D0E5697425
grant_number: '25351'
name: 'A Case Study of Plant Growth Regulation: Molecular Mechanism of Auxin-mediated
Rapid Growth Inhibition in Arabidopsis Root'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '442'
relation: part_of_dissertation
status: public
- id: '8931'
relation: part_of_dissertation
status: public
- id: '9287'
relation: part_of_dissertation
status: public
- id: '8283'
relation: part_of_dissertation
status: public
- id: '8986'
relation: part_of_dissertation
status: public
- id: '6627'
relation: part_of_dissertation
status: public
- id: '10095'
relation: part_of_dissertation
status: public
- id: '10015'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
title: Rapid cell growth regulation in Arabidopsis
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
---
_id: '10015'
abstract:
- lang: eng
text: "Auxin plays a dual role in growth regulation and, depending on the tissue
and concentration of the hormone, it can either promote or inhibit division and
expansion processes in plants. Recent studies have revealed that, beyond transcriptional
reprogramming, alternative auxincontrolled mechanisms regulate root growth. Here,
we explored the impact of different concentrations of the synthetic auxin NAA
that establish growth-promoting and -repressing conditions on the root tip proteome
and phosphoproteome, generating a unique resource. From the phosphoproteome data,
we pinpointed (novel) growth regulators, such as the RALF34-THE1 module. Our results,
together with previously published studies, suggest that auxin, H+-ATPases, cell
wall modifications and cell wall sensing receptor-like kinases are tightly embedded
in a pathway regulating cell elongation. Furthermore, our study assigned a novel
role to MKK2 as a regulator of primary root growth and a (potential) regulator
of auxin biosynthesis and signalling, and suggests the importance of the MKK2\r\nThr31
phosphorylation site for growth regulation in the Arabidopsis root tip."
acknowledgement: We thank the Nottingham Stock Centre for seeds, Frank Van Breusegem
for the phb3 mutant, and Herman Höfte for the the1 mutant. Open Access Funding by
the Austrian Science Fund (FWF).
alternative_title:
- Protein Phosphorylation and Cell Signaling in Plants
article_number: '1665 '
article_processing_charge: Yes
article_type: original
author:
- first_name: N
full_name: Nikonorova, N
last_name: Nikonorova
- first_name: E
full_name: Murphy, E
last_name: Murphy
- first_name: CF
full_name: Fonseca de Lima, CF
last_name: Fonseca de Lima
- first_name: S
full_name: Zhu, S
last_name: Zhu
- first_name: B
full_name: van de Cotte, B
last_name: van de Cotte
- first_name: LD
full_name: Vu, LD
last_name: Vu
- first_name: D
full_name: Balcerowicz, D
last_name: Balcerowicz
- first_name: Lanxin
full_name: Li, Lanxin
id: 367EF8FA-F248-11E8-B48F-1D18A9856A87
last_name: Li
orcid: 0000-0002-5607-272X
- first_name: X
full_name: Kong, X
last_name: Kong
- first_name: G
full_name: De Rop, G
last_name: De Rop
- first_name: T
full_name: Beeckman, T
last_name: Beeckman
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
- first_name: K
full_name: Vissenberg, K
last_name: Vissenberg
- first_name: PC
full_name: Morris, PC
last_name: Morris
- first_name: Z
full_name: Ding, Z
last_name: Ding
- first_name: I
full_name: De Smet, I
last_name: De Smet
citation:
ama: Nikonorova N, Murphy E, Fonseca de Lima C, et al. The Arabidopsis root tip
(phospho)proteomes at growth-promoting versus growth-repressing conditions reveal
novel root growth regulators. Cells. 2021;10. doi:10.3390/cells10071665
apa: Nikonorova, N., Murphy, E., Fonseca de Lima, C., Zhu, S., van de Cotte, B.,
Vu, L., … De Smet, I. (2021). The Arabidopsis root tip (phospho)proteomes at growth-promoting
versus growth-repressing conditions reveal novel root growth regulators. Cells.
MDPI. https://doi.org/10.3390/cells10071665
chicago: Nikonorova, N, E Murphy, CF Fonseca de Lima, S Zhu, B van de Cotte, LD
Vu, D Balcerowicz, et al. “The Arabidopsis Root Tip (Phospho)Proteomes at Growth-Promoting
versus Growth-Repressing Conditions Reveal Novel Root Growth Regulators.” Cells.
MDPI, 2021. https://doi.org/10.3390/cells10071665.
ieee: N. Nikonorova et al., “The Arabidopsis root tip (phospho)proteomes
at growth-promoting versus growth-repressing conditions reveal novel root growth
regulators,” Cells, vol. 10. MDPI, 2021.
ista: Nikonorova N, Murphy E, Fonseca de Lima C, Zhu S, van de Cotte B, Vu L, Balcerowicz
D, Li L, Kong X, De Rop G, Beeckman T, Friml J, Vissenberg K, Morris P, Ding Z,
De Smet I. 2021. The Arabidopsis root tip (phospho)proteomes at growth-promoting
versus growth-repressing conditions reveal novel root growth regulators. Cells.
10, 1665.
mla: Nikonorova, N., et al. “The Arabidopsis Root Tip (Phospho)Proteomes at Growth-Promoting
versus Growth-Repressing Conditions Reveal Novel Root Growth Regulators.” Cells,
vol. 10, 1665, MDPI, 2021, doi:10.3390/cells10071665.
short: N. Nikonorova, E. Murphy, C. Fonseca de Lima, S. Zhu, B. van de Cotte, L.
Vu, D. Balcerowicz, L. Li, X. Kong, G. De Rop, T. Beeckman, J. Friml, K. Vissenberg,
P. Morris, Z. Ding, I. De Smet, Cells 10 (2021).
date_created: 2021-09-14T11:36:20Z
date_published: 2021-07-02T00:00:00Z
date_updated: 2024-03-28T23:30:44Z
day: '02'
ddc:
- '575'
department:
- _id: JiFr
doi: 10.3390/cells10071665
ec_funded: 1
external_id:
isi:
- '000676604700001'
pmid:
- '34359847'
file:
- access_level: open_access
checksum: 2a9f534b9c2200e72e2cde95afaf4eed
content_type: application/pdf
creator: cchlebak
date_created: 2021-09-16T09:07:06Z
date_updated: 2021-09-16T09:07:06Z
file_id: '10021'
file_name: 2021_Cells_Nikonorova.pdf
file_size: 2667848
relation: main_file
success: 1
file_date_updated: 2021-09-16T09:07:06Z
has_accepted_license: '1'
intvolume: ' 10'
isi: 1
keyword:
- primary root
- (phospho)proteomics
- auxin
- (receptor) kinase
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
- _id: 3AC91DDA-15DF-11EA-824D-93A3E7B544D1
call_identifier: FWF
name: FWF Open Access Fund
publication: Cells
publication_identifier:
issn:
- 2073-4409
publication_status: published
publisher: MDPI
quality_controlled: '1'
related_material:
record:
- id: '10083'
relation: dissertation_contains
status: public
status: public
title: The Arabidopsis root tip (phospho)proteomes at growth-promoting versus growth-repressing
conditions reveal novel root growth regulators
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 10
year: '2021'
...
---
_id: '10095'
abstract:
- lang: eng
text: Growth regulation tailors plant development to its environment. A showcase
is response to gravity, where shoots bend up and roots down1. This paradox is
based on opposite effects of the phytohormone auxin, which promotes cell expansion
in shoots, while inhibiting it in roots via a yet unknown cellular mechanism2.
Here, by combining microfluidics, live imaging, genetic engineering and phospho-proteomics
in Arabidopsis thaliana, we advance our understanding how auxin inhibits root
growth. We show that auxin activates two distinct, antagonistically acting signalling
pathways that converge on the rapid regulation of the apoplastic pH, a causative
growth determinant. Cell surface-based TRANSMEMBRANE KINASE1 (TMK1) interacts
with and mediates phosphorylation and activation of plasma membrane H+-ATPases
for apoplast acidification, while intracellular canonical auxin signalling promotes
net cellular H+-influx, causing apoplast alkalinisation. The simultaneous activation
of these two counteracting mechanisms poises the root for a rapid, fine-tuned
growth modulation while navigating complex soil environment.
acknowledged_ssus:
- _id: LifeSc
- _id: M-Shop
- _id: Bio
acknowledgement: We thank Nataliia Gnyliukh and Lukas Hörmayer for technical assistance
and Nadine Paris for sharing PM-Cyto seeds. We gratefully acknowledge Life Science,
Machine Shop and Bioimaging Facilities of IST Austria. This project has received
funding from the European Research Council Advanced Grant (ETAP-742985) and the
Austrian Science Fund (FWF) I 3630-B25 to J.F., the National Institutes of Health
(GM067203) to W.M.G., the Netherlands Organization for Scientific Research (NWO;
VIDI-864.13.001.), the Research Foundation-Flanders (FWO; Odysseus II G0D0515N)
and a European Research Council Starting Grant (TORPEDO-714055) to W.S. and B.D.R.,
the VICI grant (865.14.001) from the Netherlands Organization for Scientific Research
to M.R and D.W., the Australian Research Council and China National Distinguished
Expert Project (WQ20174400441) to S.S., the MEXT/JSPS KAKENHI to K.T. (20K06685)
and T.K. (20H05687 and 20H05910), the European Union’s Horizon 2020 research and
innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 665385
and the DOC Fellowship of the Austrian Academy of Sciences to L.L., the China Scholarship
Council to J.C.
article_number: '266395'
article_processing_charge: No
author:
- first_name: Lanxin
full_name: Li, Lanxin
id: 367EF8FA-F248-11E8-B48F-1D18A9856A87
last_name: Li
orcid: 0000-0002-5607-272X
- first_name: Inge
full_name: Verstraeten, Inge
id: 362BF7FE-F248-11E8-B48F-1D18A9856A87
last_name: Verstraeten
orcid: 0000-0001-7241-2328
- first_name: Mark
full_name: Roosjen, Mark
last_name: Roosjen
- first_name: Koji
full_name: Takahashi, Koji
last_name: Takahashi
- first_name: Lesia
full_name: Rodriguez Solovey, Lesia
id: 3922B506-F248-11E8-B48F-1D18A9856A87
last_name: Rodriguez Solovey
orcid: 0000-0002-7244-7237
- first_name: Jack
full_name: Merrin, Jack
id: 4515C308-F248-11E8-B48F-1D18A9856A87
last_name: Merrin
orcid: 0000-0001-5145-4609
- first_name: Jian
full_name: Chen, Jian
last_name: Chen
- first_name: Lana
full_name: Shabala, Lana
last_name: Shabala
- first_name: Wouter
full_name: Smet, Wouter
last_name: Smet
- first_name: Hong
full_name: Ren, Hong
last_name: Ren
- first_name: Steffen
full_name: Vanneste, Steffen
last_name: Vanneste
- first_name: Sergey
full_name: Shabala, Sergey
last_name: Shabala
- first_name: Bert
full_name: De Rybel, Bert
last_name: De Rybel
- first_name: Dolf
full_name: Weijers, Dolf
last_name: Weijers
- first_name: Toshinori
full_name: Kinoshita, Toshinori
last_name: Kinoshita
- first_name: William M.
full_name: Gray, William M.
last_name: Gray
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Li L, Verstraeten I, Roosjen M, et al. Cell surface and intracellular auxin
signalling for H+-fluxes in root growth. Research Square. doi:10.21203/rs.3.rs-266395/v3
apa: Li, L., Verstraeten, I., Roosjen, M., Takahashi, K., Rodriguez Solovey, L.,
Merrin, J., … Friml, J. (n.d.). Cell surface and intracellular auxin signalling
for H+-fluxes in root growth. Research Square. https://doi.org/10.21203/rs.3.rs-266395/v3
chicago: Li, Lanxin, Inge Verstraeten, Mark Roosjen, Koji Takahashi, Lesia Rodriguez
Solovey, Jack Merrin, Jian Chen, et al. “Cell Surface and Intracellular Auxin
Signalling for H+-Fluxes in Root Growth.” Research Square, n.d. https://doi.org/10.21203/rs.3.rs-266395/v3.
ieee: L. Li et al., “Cell surface and intracellular auxin signalling for
H+-fluxes in root growth,” Research Square. .
ista: Li L, Verstraeten I, Roosjen M, Takahashi K, Rodriguez Solovey L, Merrin J,
Chen J, Shabala L, Smet W, Ren H, Vanneste S, Shabala S, De Rybel B, Weijers D,
Kinoshita T, Gray WM, Friml J. Cell surface and intracellular auxin signalling
for H+-fluxes in root growth. Research Square, 266395.
mla: Li, Lanxin, et al. “Cell Surface and Intracellular Auxin Signalling for H+-Fluxes
in Root Growth.” Research Square, 266395, doi:10.21203/rs.3.rs-266395/v3.
short: L. Li, I. Verstraeten, M. Roosjen, K. Takahashi, L. Rodriguez Solovey, J.
Merrin, J. Chen, L. Shabala, W. Smet, H. Ren, S. Vanneste, S. Shabala, B. De Rybel,
D. Weijers, T. Kinoshita, W.M. Gray, J. Friml, Research Square (n.d.).
date_created: 2021-10-06T08:56:22Z
date_published: 2021-09-09T00:00:00Z
date_updated: 2024-03-28T23:30:44Z
day: '09'
department:
- _id: JiFr
- _id: NanoFab
doi: 10.21203/rs.3.rs-266395/v3
ec_funded: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.doi.org/10.21203/rs.3.rs-266395/v3
month: '09'
oa: 1
oa_version: Preprint
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
- _id: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
- _id: 26B4D67E-B435-11E9-9278-68D0E5697425
grant_number: '25351'
name: 'A Case Study of Plant Growth Regulation: Molecular Mechanism of Auxin-mediated
Rapid Growth Inhibition in Arabidopsis Root'
publication: Research Square
publication_identifier:
issn:
- 2693-5015
publication_status: accepted
related_material:
record:
- id: '10223'
relation: later_version
status: public
- id: '10083'
relation: dissertation_contains
status: public
status: public
title: Cell surface and intracellular auxin signalling for H+-fluxes in root growth
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '10293'
abstract:
- lang: eng
text: "Indirect reciprocity in evolutionary game theory is a prominent mechanism
for explaining the evolution of cooperation among unrelated individuals. In contrast
to direct reciprocity, which is based on individuals meeting repeatedly, and conditionally
cooperating by using their own experiences, indirect reciprocity is based on individuals’
reputations. If a player helps another, this increases the helper’s public standing,
benefitting them in the future. This lets cooperation in the population emerge
without individuals having to meet more than once. While the two modes of reciprocity
are intertwined, they are difficult to compare. Thus, they are usually studied
in isolation. Direct reciprocity can maintain cooperation with simple strategies,
and is robust against noise even when players do not remember more\r\nthan their
partner’s last action. Meanwhile, indirect reciprocity requires its successful
strategies, or social norms, to be more complex. Exhaustive search previously
identified eight such norms, called the “leading eight”, which excel at maintaining
cooperation. However, as the first result of this thesis, we show that the leading
eight break down once we remove the fundamental assumption that information is
synchronized and public, such that everyone agrees on reputations. Once we consider
a more realistic scenario of imperfect information, where reputations are private,
and individuals occasionally misinterpret or miss observations, the leading eight
do not promote cooperation anymore. Instead, minor initial disagreements can proliferate,
fragmenting populations into subgroups. In a next step, we consider ways to mitigate
this issue. We first explore whether introducing “generosity” can stabilize cooperation
when players use the leading eight strategies in noisy environments. This approach
of modifying strategies to include probabilistic elements for coping with errors
is known to work well in direct reciprocity. However, as we show here, it fails
for the more complex norms of indirect reciprocity. Imperfect information still
prevents cooperation from evolving. On the other hand, we succeeded to show in
this thesis that modifying the leading eight to use “quantitative assessment”,
i.e. tracking reputation scores on a scale beyond good and bad, and making overall
judgments of others based on a threshold, is highly successful, even when noise
increases in the environment. Cooperation can flourish when reputations\r\nare
more nuanced, and players have a broader understanding what it means to be “good.”
Finally, we present a single theoretical framework that unites the two modes of
reciprocity despite their differences. Within this framework, we identify a novel
simple and successful strategy for indirect reciprocity, which can cope with noisy
environments and has an analogue in direct reciprocity. We can also analyze decision
making when different sources of information are available. Our results help highlight
that for sustaining cooperation, already the most simple rules of reciprocity
can be sufficient."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Laura
full_name: Schmid, Laura
id: 38B437DE-F248-11E8-B48F-1D18A9856A87
last_name: Schmid
orcid: 0000-0002-6978-7329
citation:
ama: Schmid L. Evolution of cooperation via (in)direct reciprocity under imperfect
information. 2021. doi:10.15479/at:ista:10293
apa: Schmid, L. (2021). Evolution of cooperation via (in)direct reciprocity under
imperfect information. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:10293
chicago: Schmid, Laura. “Evolution of Cooperation via (in)Direct Reciprocity under
Imperfect Information.” Institute of Science and Technology Austria, 2021. https://doi.org/10.15479/at:ista:10293.
ieee: L. Schmid, “Evolution of cooperation via (in)direct reciprocity under imperfect
information,” Institute of Science and Technology Austria, 2021.
ista: Schmid L. 2021. Evolution of cooperation via (in)direct reciprocity under
imperfect information. Institute of Science and Technology Austria.
mla: Schmid, Laura. Evolution of Cooperation via (in)Direct Reciprocity under
Imperfect Information. Institute of Science and Technology Austria, 2021,
doi:10.15479/at:ista:10293.
short: L. Schmid, Evolution of Cooperation via (in)Direct Reciprocity under Imperfect
Information, Institute of Science and Technology Austria, 2021.
date_created: 2021-11-15T17:12:57Z
date_published: 2021-11-17T00:00:00Z
date_updated: 2023-11-07T08:28:29Z
day: '17'
ddc:
- '519'
- '576'
degree_awarded: PhD
department:
- _id: GradSch
- _id: KrCh
doi: 10.15479/at:ista:10293
ec_funded: 1
file:
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checksum: 86a05b430756ca12ae8107b6e6f3c1e5
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language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
page: '171'
project:
- _id: 2581B60A-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '279307'
name: 'Quantitative Graph Games: Theory and Applications'
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
call_identifier: H2020
grant_number: '863818'
name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: Z211
name: The Wittgenstein Prize
- _id: 2584A770-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P 23499-N23
name: Modern Graph Algorithmic Techniques in Formal Verification
- _id: 25832EC2-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: S 11407_N23
name: Rigorous Systems Engineering
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '9997'
relation: part_of_dissertation
status: public
- id: '2'
relation: part_of_dissertation
status: public
- id: '9402'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
title: Evolution of cooperation via (in)direct reciprocity under imperfect information
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
---
_id: '9997'
abstract:
- lang: eng
text: Indirect reciprocity is a mechanism for the evolution of cooperation based
on social norms. This mechanism requires that individuals in a population observe
and judge each other’s behaviors. Individuals with a good reputation are more
likely to receive help from others. Previous work suggests that indirect reciprocity
is only effective when all relevant information is reliable and publicly available.
Otherwise, individuals may disagree on how to assess others, even if they all
apply the same social norm. Such disagreements can lead to a breakdown of cooperation.
Here we explore whether the predominantly studied ‘leading eight’ social norms
of indirect reciprocity can be made more robust by equipping them with an element
of generosity. To this end, we distinguish between two kinds of generosity. According
to assessment generosity, individuals occasionally assign a good reputation to
group members who would usually be regarded as bad. According to action generosity,
individuals occasionally cooperate with group members with whom they would usually
defect. Using individual-based simulations, we show that the two kinds of generosity
have a very different effect on the resulting reputation dynamics. Assessment
generosity tends to add to the overall noise and allows defectors to invade. In
contrast, a limited amount of action generosity can be beneficial in a few cases.
However, even when action generosity is beneficial, the respective simulations
do not result in full cooperation. Our results suggest that while generosity can
favor cooperation when individuals use the most simple strategies of reciprocity,
it is disadvantageous when individuals use more complex social norms.
acknowledgement: 'This work was supported by the European Research Council CoG 863818
(ForM-SMArt) (to K.C.) and the European Research Council Starting Grant 850529:
E-DIRECT (to C.H.). L.S. received additional partial support by the Austrian Science
Fund (FWF) under Grant Z211-N23 (Wittgenstein Award).'
article_number: '17443'
article_processing_charge: Yes
article_type: original
author:
- first_name: Laura
full_name: Schmid, Laura
id: 38B437DE-F248-11E8-B48F-1D18A9856A87
last_name: Schmid
orcid: 0000-0002-6978-7329
- first_name: Pouya
full_name: Shati, Pouya
last_name: Shati
- first_name: Christian
full_name: Hilbe, Christian
last_name: Hilbe
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
citation:
ama: Schmid L, Shati P, Hilbe C, Chatterjee K. The evolution of indirect reciprocity
under action and assessment generosity. Scientific Reports. 2021;11(1).
doi:10.1038/s41598-021-96932-1
apa: Schmid, L., Shati, P., Hilbe, C., & Chatterjee, K. (2021). The evolution
of indirect reciprocity under action and assessment generosity. Scientific
Reports. Springer Nature. https://doi.org/10.1038/s41598-021-96932-1
chicago: Schmid, Laura, Pouya Shati, Christian Hilbe, and Krishnendu Chatterjee.
“The Evolution of Indirect Reciprocity under Action and Assessment Generosity.”
Scientific Reports. Springer Nature, 2021. https://doi.org/10.1038/s41598-021-96932-1.
ieee: L. Schmid, P. Shati, C. Hilbe, and K. Chatterjee, “The evolution of indirect
reciprocity under action and assessment generosity,” Scientific Reports,
vol. 11, no. 1. Springer Nature, 2021.
ista: Schmid L, Shati P, Hilbe C, Chatterjee K. 2021. The evolution of indirect
reciprocity under action and assessment generosity. Scientific Reports. 11(1),
17443.
mla: Schmid, Laura, et al. “The Evolution of Indirect Reciprocity under Action and
Assessment Generosity.” Scientific Reports, vol. 11, no. 1, 17443, Springer
Nature, 2021, doi:10.1038/s41598-021-96932-1.
short: L. Schmid, P. Shati, C. Hilbe, K. Chatterjee, Scientific Reports 11 (2021).
date_created: 2021-09-11T16:22:02Z
date_published: 2021-08-31T00:00:00Z
date_updated: 2024-03-28T23:30:45Z
day: '31'
ddc:
- '003'
department:
- _id: GradSch
- _id: KrCh
doi: 10.1038/s41598-021-96932-1
ec_funded: 1
external_id:
isi:
- '000692406400018'
pmid:
- '34465830'
file:
- access_level: open_access
checksum: 19df8816cf958b272b85841565c73182
content_type: application/pdf
creator: cchlebak
date_created: 2021-09-13T10:31:21Z
date_updated: 2021-09-13T10:31:21Z
file_id: '10006'
file_name: 2021_ScientificReports_Schmid.pdf
file_size: 2424943
relation: main_file
success: 1
file_date_updated: 2021-09-13T10:31:21Z
has_accepted_license: '1'
intvolume: ' 11'
isi: 1
issue: '1'
keyword:
- Multidisciplinary
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
call_identifier: H2020
grant_number: '863818'
name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: Z211
name: The Wittgenstein Prize
publication: Scientific Reports
publication_identifier:
eissn:
- 2045-2322
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
record:
- id: '10293'
relation: dissertation_contains
status: public
status: public
title: The evolution of indirect reciprocity under action and assessment generosity
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 11
year: '2021'
...
---
_id: '9402'
abstract:
- lang: eng
text: Direct and indirect reciprocity are key mechanisms for the evolution of cooperation.
Direct reciprocity means that individuals use their own experience to decide whether
to cooperate with another person. Indirect reciprocity means that they also consider
the experiences of others. Although these two mechanisms are intertwined, they
are typically studied in isolation. Here, we introduce a mathematical framework
that allows us to explore both kinds of reciprocity simultaneously. We show that
the well-known ‘generous tit-for-tat’ strategy of direct reciprocity has a natural
analogue in indirect reciprocity, which we call ‘generous scoring’. Using an equilibrium
analysis, we characterize under which conditions either of the two strategies
can maintain cooperation. With simulations, we additionally explore which kind
of reciprocity evolves when members of a population engage in social learning
to adapt to their environment. Our results draw unexpected connections between
direct and indirect reciprocity while highlighting important differences regarding
their evolvability.
acknowledgement: 'This work was supported by the European Research Council CoG 863818
(ForM-SMArt) (to K.C.), the European Research Council Start Grant 279307: Graph
Games (to K.C.), and the European Research Council Starting Grant 850529: E-DIRECT
(to C.H.). The funders had no role in study design, data collection and analysis,
decision to publish or preparation of the manuscript.'
article_processing_charge: No
article_type: original
author:
- first_name: Laura
full_name: Schmid, Laura
id: 38B437DE-F248-11E8-B48F-1D18A9856A87
last_name: Schmid
orcid: 0000-0002-6978-7329
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
- first_name: Christian
full_name: Hilbe, Christian
id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87
last_name: Hilbe
orcid: 0000-0001-5116-955X
- first_name: Martin A.
full_name: Nowak, Martin A.
last_name: Nowak
citation:
ama: Schmid L, Chatterjee K, Hilbe C, Nowak MA. A unified framework of direct and
indirect reciprocity. Nature Human Behaviour. 2021;5(10):1292–1302. doi:10.1038/s41562-021-01114-8
apa: Schmid, L., Chatterjee, K., Hilbe, C., & Nowak, M. A. (2021). A unified
framework of direct and indirect reciprocity. Nature Human Behaviour. Springer
Nature. https://doi.org/10.1038/s41562-021-01114-8
chicago: Schmid, Laura, Krishnendu Chatterjee, Christian Hilbe, and Martin A. Nowak.
“A Unified Framework of Direct and Indirect Reciprocity.” Nature Human Behaviour.
Springer Nature, 2021. https://doi.org/10.1038/s41562-021-01114-8.
ieee: L. Schmid, K. Chatterjee, C. Hilbe, and M. A. Nowak, “A unified framework
of direct and indirect reciprocity,” Nature Human Behaviour, vol. 5, no.
10. Springer Nature, pp. 1292–1302, 2021.
ista: Schmid L, Chatterjee K, Hilbe C, Nowak MA. 2021. A unified framework of direct
and indirect reciprocity. Nature Human Behaviour. 5(10), 1292–1302.
mla: Schmid, Laura, et al. “A Unified Framework of Direct and Indirect Reciprocity.”
Nature Human Behaviour, vol. 5, no. 10, Springer Nature, 2021, pp. 1292–1302,
doi:10.1038/s41562-021-01114-8.
short: L. Schmid, K. Chatterjee, C. Hilbe, M.A. Nowak, Nature Human Behaviour 5
(2021) 1292–1302.
date_created: 2021-05-18T16:56:57Z
date_published: 2021-05-13T00:00:00Z
date_updated: 2024-03-28T23:30:45Z
day: '13'
ddc:
- '000'
department:
- _id: KrCh
- _id: GradSch
doi: 10.1038/s41562-021-01114-8
ec_funded: 1
external_id:
isi:
- '000650304000002'
pmid:
- '33986519'
file:
- access_level: open_access
checksum: 34f55e173f90dc1dab731063458ac780
content_type: application/pdf
creator: dernst
date_created: 2023-11-07T08:27:23Z
date_updated: 2023-11-07T08:27:23Z
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file_size: 5232761
relation: main_file
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file_date_updated: 2023-11-07T08:27:23Z
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intvolume: ' 5'
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issue: '10'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Submitted Version
page: 1292–1302
pmid: 1
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
call_identifier: H2020
grant_number: '863818'
name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 2581B60A-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '279307'
name: 'Quantitative Graph Games: Theory and Applications'
publication: Nature Human Behaviour
publication_identifier:
eissn:
- 2397-3374
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/the-emergence-of-cooperation/
record:
- id: '10293'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: A unified framework of direct and indirect reciprocity
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5
year: '2021'
...
---
_id: '9817'
abstract:
- lang: eng
text: Elastic bending of initially flat slender elements allows the realization
and economic fabrication of intriguing curved shapes. In this work, we derive
an intuitive but rigorous geometric characterization of the design space of plane
elastic rods with variable stiffness. It enables designers to determine which
shapes are physically viable with active bending by visual inspection alone. Building
on these insights, we propose a method for efficiently designing the geometry
of a flat elastic rod that realizes a target equilibrium curve, which only requires
solving a linear program. We implement this method in an interactive computational
design tool that gives feedback about the feasibility of a design, and computes
the geometry of the structural elements necessary to realize it within an instant.
The tool also offers an iterative optimization routine that improves the fabricability
of a model while modifying it as little as possible. In addition, we use our geometric
characterization to derive an algorithm for analyzing and recovering the stability
of elastic curves that would otherwise snap out of their unstable equilibrium
shapes by buckling. We show the efficacy of our approach by designing and manufacturing
several physical models that are assembled from flat elements.
acknowledgement: "We thank the anonymous reviewers for their generous feedback, and
Michal Piovarči for his help in producing the supplemental video. This project has
received funding from the European Research Council (ERC) under the European Union’s
Horizon 2020 research and innovation programme (grant agreement No 715767).\r\n"
article_number: '126'
article_processing_charge: No
article_type: original
author:
- first_name: Christian
full_name: Hafner, Christian
id: 400429CC-F248-11E8-B48F-1D18A9856A87
last_name: Hafner
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
citation:
ama: Hafner C, Bickel B. The design space of plane elastic curves. ACM Transactions
on Graphics. 2021;40(4). doi:10.1145/3450626.3459800
apa: 'Hafner, C., & Bickel, B. (2021). The design space of plane elastic curves.
ACM Transactions on Graphics. Virtual: Association for Computing Machinery.
https://doi.org/10.1145/3450626.3459800'
chicago: Hafner, Christian, and Bernd Bickel. “The Design Space of Plane Elastic
Curves.” ACM Transactions on Graphics. Association for Computing Machinery,
2021. https://doi.org/10.1145/3450626.3459800.
ieee: C. Hafner and B. Bickel, “The design space of plane elastic curves,” ACM
Transactions on Graphics, vol. 40, no. 4. Association for Computing Machinery,
2021.
ista: Hafner C, Bickel B. 2021. The design space of plane elastic curves. ACM Transactions
on Graphics. 40(4), 126.
mla: Hafner, Christian, and Bernd Bickel. “The Design Space of Plane Elastic Curves.”
ACM Transactions on Graphics, vol. 40, no. 4, 126, Association for Computing
Machinery, 2021, doi:10.1145/3450626.3459800.
short: C. Hafner, B. Bickel, ACM Transactions on Graphics 40 (2021).
conference:
end_date: 2021-08-13
location: Virtual
name: 'SIGGRAF: Special Interest Group on Computer Graphics and Interactive Techniques'
start_date: 2021-08-09
date_created: 2021-08-08T22:01:26Z
date_published: 2021-07-19T00:00:00Z
date_updated: 2024-03-28T23:30:47Z
day: '19'
ddc:
- '516'
department:
- _id: BeBi
doi: 10.1145/3450626.3459800
ec_funded: 1
external_id:
isi:
- '000674930900091'
file:
- access_level: open_access
checksum: 7e5d08ce46b0451b3102eacd3d00f85f
content_type: application/pdf
creator: chafner
date_created: 2021-10-18T10:42:15Z
date_updated: 2021-10-18T10:42:15Z
file_id: '10150'
file_name: elastic-curves-paper.pdf
file_size: 17064290
relation: main_file
success: 1
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content_type: application/pdf
creator: chafner
date_created: 2021-10-18T10:42:22Z
date_updated: 2021-10-18T10:42:22Z
file_id: '10151'
file_name: elastic-curves-supp.pdf
file_size: 547156
relation: supplementary_material
file_date_updated: 2021-10-18T10:42:22Z
has_accepted_license: '1'
intvolume: ' 40'
isi: 1
issue: '4'
keyword:
- Computing methodologies
- shape modeling
- modeling and simulation
- theory of computation
- computational geometry
- mathematics of computing
- mathematical optimization
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
project:
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
related_material:
link:
- description: News on IST Website
relation: press_release
url: https://ist.ac.at/en/news/designing-with-elastic-structures/
record:
- id: '12897'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: The design space of plane elastic curves
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 40
year: '2021'
...
---
_id: '10135'
abstract:
- lang: eng
text: "Plants maintain the capacity to develop new organs e.g. lateral roots post-embryonically
throughout their whole life and thereby flexibly adapt to ever-changing environmental
conditions. Plant hormones auxin and cytokinin are the main regulators of the
lateral root organogenesis. Additionally to their solo activities, the interaction
between auxin and\r\ncytokinin plays crucial role in fine-tuning of lateral root
development and growth. In particular, cytokinin modulates auxin distribution
within the developing lateral root by affecting the endomembrane trafficking of
auxin transporter PIN1 and promoting its vacuolar degradation (Marhavý et al.,
2011, 2014). This effect is independent of transcription and\r\ntranslation. Therefore,
it suggests novel, non-canonical cytokinin activity occuring possibly on the posttranslational
level. Impact of cytokinin and other plant hormones on auxin transporters (including
PIN1) on the posttranslational level is described in detail in the introduction
part of this thesis in a form of a review (Semeradova et al., 2020). To gain insights
into the molecular machinery underlying cytokinin effect on the endomembrane trafficking
in the plant cell, in particular on the PIN1 degradation, we conducted two large
proteomic screens: 1) Identification of cytokinin binding proteins using\r\nchemical
proteomics. 2) Monitoring of proteomic and phosphoproteomic changes upon cytokinin
treatment. In the first screen, we identified DYNAMIN RELATED PROTEIN 2A (DRP2A).
We found that DRP2A plays a role in cytokinin regulated processes during the plant
growth and that cytokinin treatment promotes destabilization of DRP2A protein.
However, the role of DRP2A in the PIN1 degradation remains to be elucidated. In
the second screen, we found VACUOLAR PROTEIN SORTING 9A (VPS9A). VPS9a plays crucial
role in plant’s response to cytokin and in cytokinin mediated PIN1 degradation.
Altogether, we identified proteins, which bind to cytokinin and proteins that
in response to\r\ncytokinin exhibit significantly changed abundance or phosphorylation
pattern. By combining information from these two screens, we can pave our way
towards understanding of noncanonical cytokinin effects."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Hana
full_name: Semerádová, Hana
id: 42FE702E-F248-11E8-B48F-1D18A9856A87
last_name: Semerádová
citation:
ama: Semerádová H. Molecular mechanisms of the cytokinin-regulated endomembrane
trafficking to coordinate plant organogenesis. 2021. doi:10.15479/at:ista:10135
apa: Semerádová, H. (2021). Molecular mechanisms of the cytokinin-regulated endomembrane
trafficking to coordinate plant organogenesis. Institute of Science and Technology
Austria. https://doi.org/10.15479/at:ista:10135
chicago: Semerádová, Hana. “Molecular Mechanisms of the Cytokinin-Regulated Endomembrane
Trafficking to Coordinate Plant Organogenesis.” Institute of Science and Technology
Austria, 2021. https://doi.org/10.15479/at:ista:10135.
ieee: H. Semerádová, “Molecular mechanisms of the cytokinin-regulated endomembrane
trafficking to coordinate plant organogenesis,” Institute of Science and Technology
Austria, 2021.
ista: Semerádová H. 2021. Molecular mechanisms of the cytokinin-regulated endomembrane
trafficking to coordinate plant organogenesis. Institute of Science and Technology
Austria.
mla: Semerádová, Hana. Molecular Mechanisms of the Cytokinin-Regulated Endomembrane
Trafficking to Coordinate Plant Organogenesis. Institute of Science and Technology
Austria, 2021, doi:10.15479/at:ista:10135.
short: H. Semerádová, Molecular Mechanisms of the Cytokinin-Regulated Endomembrane
Trafficking to Coordinate Plant Organogenesis, Institute of Science and Technology
Austria, 2021.
date_created: 2021-10-13T13:42:48Z
date_published: 2021-10-13T00:00:00Z
date_updated: 2024-01-25T10:53:29Z
day: '13'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: EvBe
doi: 10.15479/at:ista:10135
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date_created: 2021-10-27T07:45:57Z
date_updated: 2022-12-20T23:30:05Z
embargo: 2022-10-28
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file_size: 10623525
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file_date_updated: 2022-12-20T23:30:05Z
has_accepted_license: '1'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 261821BC-B435-11E9-9278-68D0E5697425
grant_number: '24746'
name: Molecular mechanisms of the cytokinin regulated endomembrane trafficking to
coordinate plant organogenesis.
publication_identifier:
isbn:
- 978-3-99078-014-5
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '9160'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Eva
full_name: Benková, Eva
id: 38F4F166-F248-11E8-B48F-1D18A9856A87
last_name: Benková
orcid: 0000-0002-8510-9739
title: Molecular mechanisms of the cytokinin-regulated endomembrane trafficking to
coordinate plant organogenesis
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2021'
...
---
_id: '9728'
abstract:
- lang: eng
text: "Most real-world flows are multiphase, yet we know little about them compared
to their single-phase counterparts. Multiphase flows are more difficult to investigate
as their dynamics occur in large parameter space and involve complex phenomena
such as preferential concentration, turbulence modulation, non-Newtonian rheology,
etc. Over the last few decades, experiments in particle-laden flows have taken
a back seat in favour of ever-improving computational resources. However, computers
are still not powerful enough to simulate a real-world fluid with millions of
finite-size particles. Experiments are essential not only because they offer a
reliable way to investigate real-world multiphase flows but also because they
serve to validate numerical studies and steer the research in a relevant direction.
In this work, we have experimentally investigated particle-laden flows in pipes,
and in particular, examined the effect of particles on the laminar-turbulent transition
and the drag scaling in turbulent flows.\r\n\r\nFor particle-laden pipe flows,
an earlier study [Matas et al., 2003] reported how the sub-critical (i.e., hysteretic)
transition that occurs via localised turbulent structures called puffs is affected
by the addition of particles. In this study, in addition to this known transition,
we found a super-critical transition to a globally fluctuating state with increasing
particle concentration. At the same time, the Newtonian-type transition via puffs
is delayed to larger Reynolds numbers. At an even higher concentration, only the
globally fluctuating state is found. The dynamics of particle-laden flows are
hence determined by two competing instabilities that give rise to three flow regimes:
Newtonian-type turbulence at low, a particle-induced globally fluctuating state
at high, and a coexistence state at intermediate concentrations.\r\n\r\nThe effect
of particles on turbulent drag is ambiguous, with studies reporting drag reduction,
no net change, and even drag increase. The ambiguity arises because, in addition
to particle concentration, particle shape, size, and density also affect the net
drag. Even similar particles might affect the flow dissimilarly in different Reynolds
number and concentration ranges. In the present study, we explored a wide range
of both Reynolds number and concentration, using spherical as well as cylindrical
particles. We found that the spherical particles do not reduce drag while the
cylindrical particles are drag-reducing within a specific Reynolds number interval.
The interval strongly depends on the particle concentration and the relative size
of the pipe and particles. Within this interval, the magnitude of drag reduction
reaches a maximum. These drag reduction maxima appear to fall onto a distinct
power-law curve irrespective of the pipe diameter and particle concentration,
and this curve can be considered as the maximum drag reduction asymptote for a
given fibre shape. Such an asymptote is well known for polymeric flows but had
not been identified for particle-laden flows prior to this work."
acknowledged_ssus:
- _id: M-Shop
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Nishchal
full_name: Agrawal, Nishchal
id: 469E6004-F248-11E8-B48F-1D18A9856A87
last_name: Agrawal
citation:
ama: Agrawal N. Transition to turbulence and drag reduction in particle-laden pipe
flows. 2021. doi:10.15479/at:ista:9728
apa: Agrawal, N. (2021). Transition to turbulence and drag reduction in particle-laden
pipe flows. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:9728
chicago: Agrawal, Nishchal. “Transition to Turbulence and Drag Reduction in Particle-Laden
Pipe Flows.” Institute of Science and Technology Austria, 2021. https://doi.org/10.15479/at:ista:9728.
ieee: N. Agrawal, “Transition to turbulence and drag reduction in particle-laden
pipe flows,” Institute of Science and Technology Austria, 2021.
ista: Agrawal N. 2021. Transition to turbulence and drag reduction in particle-laden
pipe flows. Institute of Science and Technology Austria.
mla: Agrawal, Nishchal. Transition to Turbulence and Drag Reduction in Particle-Laden
Pipe Flows. Institute of Science and Technology Austria, 2021, doi:10.15479/at:ista:9728.
short: N. Agrawal, Transition to Turbulence and Drag Reduction in Particle-Laden
Pipe Flows, Institute of Science and Technology Austria, 2021.
date_created: 2021-07-27T13:40:30Z
date_published: 2021-07-29T00:00:00Z
date_updated: 2024-02-28T13:14:39Z
day: '29'
ddc:
- '532'
degree_awarded: PhD
department:
- _id: GradSch
- _id: BjHo
doi: 10.15479/at:ista:9728
file:
- access_level: closed
checksum: 77436be3563a90435024307b1b5ee7e8
content_type: application/x-zip-compressed
creator: nagrawal
date_created: 2021-07-28T13:32:02Z
date_updated: 2022-07-29T22:30:05Z
embargo_to: open_access
file_id: '9744'
file_name: Transition to Turbulence and Drag Reduction in Particle-Laden Pipe Flows.zip
file_size: 22859658
relation: source_file
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checksum: 72a891d7daba85445c29b868c22575ed
content_type: application/pdf
creator: nagrawal
date_created: 2021-07-28T13:32:05Z
date_updated: 2022-07-29T22:30:05Z
embargo: 2022-07-28
file_id: '9745'
file_name: Transition to Turbulence and Drag Reduction in Particle-Laden Pipe Flows.pdf
file_size: 18658048
relation: main_file
file_date_updated: 2022-07-29T22:30:05Z
has_accepted_license: '1'
keyword:
- Drag Reduction
- Transition to Turbulence
- Multiphase Flows
- particle Laden Flows
- Complex Flows
- Experiments
- Fluid Dynamics
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: '118'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '6189'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Björn
full_name: Hof, Björn
id: 3A374330-F248-11E8-B48F-1D18A9856A87
last_name: Hof
orcid: 0000-0003-2057-2754
title: Transition to turbulence and drag reduction in particle-laden pipe flows
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
---
_id: '15215'
abstract:
- lang: eng
text: AT2019wey (SRGA J043520.9+552226, SRGE J043523.3+552234) is a transient first
reported by the ATLAS optical survey in 2019 December. It rose to prominence upon
detection, three months later, by the Spektrum-Roentgen-Gamma (SRG) mission in
its first all-sky survey. X-ray observations reported in Yao et al. suggest that
AT2019wey is a Galactic low-mass X-ray binary (LMXB) with a black hole (BH) or
neutron star (NS) accretor. Here we present ultraviolet, optical, near-infrared,
and radio observations of this object. We show that the companion is a short-period
(P ≲ 16 hr) low-mass (<1 M⊙) star. We consider AT2019wey to be a candidate BH
system since its locations on the Lradio–LX and Lopt–LX diagrams are closer to
BH binaries than NS binaries. We demonstrate that from 2020 June to August, despite
the more than 10 times brightening at radio and X-ray wavelengths, the optical
luminosity of AT2019wey only increased by 1.3–1.4 times. We interpret the UV/optical
emission before the brightening as thermal emission from a truncated disk in a
hot accretion flow and the UV/optical emission after the brightening as reprocessing
of the X-ray emission in the outer accretion disk. AT2019wey demonstrates that
combining current wide-field optical surveys and SRG provides a way to discover
the emerging population of short-period BH LMXB systems with faint X-ray outbursts.
article_number: '120'
article_processing_charge: No
article_type: original
author:
- first_name: Yuhan
full_name: Yao, Yuhan
last_name: Yao
- first_name: S. R.
full_name: Kulkarni, S. R.
last_name: Kulkarni
- first_name: Kevin B.
full_name: Burdge, Kevin B.
last_name: Burdge
- first_name: Ilaria
full_name: Caiazzo, Ilaria
id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
last_name: Caiazzo
orcid: 0000-0002-4770-5388
- first_name: Kishalay
full_name: De, Kishalay
last_name: De
- first_name: Dillon
full_name: Dong, Dillon
last_name: Dong
- first_name: C.
full_name: Fremling, C.
last_name: Fremling
- first_name: Mansi M.
full_name: Kasliwal, Mansi M.
last_name: Kasliwal
- first_name: Thomas
full_name: Kupfer, Thomas
last_name: Kupfer
- first_name: Jan
full_name: van Roestel, Jan
last_name: van Roestel
- first_name: Jesper
full_name: Sollerman, Jesper
last_name: Sollerman
- first_name: Ashot
full_name: Bagdasaryan, Ashot
last_name: Bagdasaryan
- first_name: Eric C.
full_name: Bellm, Eric C.
last_name: Bellm
- first_name: S. Bradley
full_name: Cenko, S. Bradley
last_name: Cenko
- first_name: Andrew J.
full_name: Drake, Andrew J.
last_name: Drake
- first_name: Dmitry A.
full_name: Duev, Dmitry A.
last_name: Duev
- first_name: Matthew J.
full_name: Graham, Matthew J.
last_name: Graham
- first_name: Stephen
full_name: Kaye, Stephen
last_name: Kaye
- first_name: Frank J.
full_name: Masci, Frank J.
last_name: Masci
- first_name: Nicolas
full_name: Miranda, Nicolas
last_name: Miranda
- first_name: Thomas A.
full_name: Prince, Thomas A.
last_name: Prince
- first_name: Reed
full_name: Riddle, Reed
last_name: Riddle
- first_name: Ben
full_name: Rusholme, Ben
last_name: Rusholme
- first_name: Maayane T.
full_name: Soumagnac, Maayane T.
last_name: Soumagnac
citation:
ama: 'Yao Y, Kulkarni SR, Burdge KB, et al. Multi-wavelength observations of AT2019wey:
A new candidate black hole low-mass X-ray binary. The Astrophysical Journal.
2021;920(2). doi:10.3847/1538-4357/ac15f9'
apa: 'Yao, Y., Kulkarni, S. R., Burdge, K. B., Caiazzo, I., De, K., Dong, D., …
Soumagnac, M. T. (2021). Multi-wavelength observations of AT2019wey: A new candidate
black hole low-mass X-ray binary. The Astrophysical Journal. American Astronomical
Society. https://doi.org/10.3847/1538-4357/ac15f9'
chicago: 'Yao, Yuhan, S. R. Kulkarni, Kevin B. Burdge, Ilaria Caiazzo, Kishalay
De, Dillon Dong, C. Fremling, et al. “Multi-Wavelength Observations of AT2019wey:
A New Candidate Black Hole Low-Mass X-Ray Binary.” The Astrophysical Journal.
American Astronomical Society, 2021. https://doi.org/10.3847/1538-4357/ac15f9.'
ieee: 'Y. Yao et al., “Multi-wavelength observations of AT2019wey: A new
candidate black hole low-mass X-ray binary,” The Astrophysical Journal,
vol. 920, no. 2. American Astronomical Society, 2021.'
ista: 'Yao Y, Kulkarni SR, Burdge KB, Caiazzo I, De K, Dong D, Fremling C, Kasliwal
MM, Kupfer T, van Roestel J, Sollerman J, Bagdasaryan A, Bellm EC, Cenko SB, Drake
AJ, Duev DA, Graham MJ, Kaye S, Masci FJ, Miranda N, Prince TA, Riddle R, Rusholme
B, Soumagnac MT. 2021. Multi-wavelength observations of AT2019wey: A new candidate
black hole low-mass X-ray binary. The Astrophysical Journal. 920(2), 120.'
mla: 'Yao, Yuhan, et al. “Multi-Wavelength Observations of AT2019wey: A New Candidate
Black Hole Low-Mass X-Ray Binary.” The Astrophysical Journal, vol. 920,
no. 2, 120, American Astronomical Society, 2021, doi:10.3847/1538-4357/ac15f9.'
short: Y. Yao, S.R. Kulkarni, K.B. Burdge, I. Caiazzo, K. De, D. Dong, C. Fremling,
M.M. Kasliwal, T. Kupfer, J. van Roestel, J. Sollerman, A. Bagdasaryan, E.C. Bellm,
S.B. Cenko, A.J. Drake, D.A. Duev, M.J. Graham, S. Kaye, F.J. Masci, N. Miranda,
T.A. Prince, R. Riddle, B. Rusholme, M.T. Soumagnac, The Astrophysical Journal
920 (2021).
date_created: 2024-03-26T10:32:06Z
date_published: 2021-10-21T00:00:00Z
date_updated: 2024-03-29T15:02:59Z
day: '21'
doi: 10.3847/1538-4357/ac15f9
extern: '1'
external_id:
arxiv:
- '2012.00169'
intvolume: ' 920'
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2012.00169
month: '10'
oa: 1
oa_version: Preprint
publication: The Astrophysical Journal
publication_identifier:
eissn:
- 1538-4357
issn:
- 0004-637X
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
status: public
title: 'Multi-wavelength observations of AT2019wey: A new candidate black hole low-mass
X-ray binary'
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 920
year: '2021'
...
---
_id: '10336'
abstract:
- lang: eng
text: Biological membranes can dramatically accelerate the aggregation of normally
soluble protein molecules into amyloid fibrils and alter the fibril morphologies,
yet the molecular mechanisms through which this accelerated nucleation takes place
are not yet understood. Here, we develop a coarse-grained model to systematically
explore the effect that the structural properties of the lipid membrane and the
nature of protein–membrane interactions have on the nucleation rates of amyloid
fibrils. We identify two physically distinct nucleation pathways—protein-rich
and lipid-rich—and quantify how the membrane fluidity and protein–membrane affinity
control the relative importance of those molecular pathways. We find that the
membrane’s susceptibility to reshaping and being incorporated into the fibrillar
aggregates is a key determinant of its ability to promote protein aggregation.
We then characterize the rates and the free-energy profile associated with this
heterogeneous nucleation process, in which the surface itself participates in
the aggregate structure. Finally, we compare quantitatively our data to experiments
on membrane-catalyzed amyloid aggregation of α-synuclein, a protein implicated
in Parkinson’s disease that predominately nucleates on membranes. More generally,
our results provide a framework for understanding macromolecular aggregation on
lipid membranes in a broad biological and biotechnological context.
acknowledgement: We thank T. C. T. Michaels for reading the manuscript. This work
was supported by the Academy of Medical Science (J.K. and A.Š.), the Cambridge Center
for Misfolding Diseases (T.P.J.K.), the Biotechnology and Biological Sciences Research
Council (T.P.J.K.), the Frances and Augustus Newman Foundation (T.P.J.K.), the European
Research Council Grant PhysProt Agreement 337969, the Wellcome Trust (A.Š. and T.P.J.K.),
the Royal Society (A.Š.), the Medical Research Council (J.K. and A.Š.), and the
UK Materials and Molecular Modeling Hub for computational resources, which is partially
funded by Engineering and Physical Sciences Research Council Grant EP/P020194/1.
article_processing_charge: No
article_type: original
author:
- first_name: Johannes
full_name: Krausser, Johannes
last_name: Krausser
- first_name: Tuomas P. J.
full_name: Knowles, Tuomas P. J.
last_name: Knowles
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
citation:
ama: Krausser J, Knowles TPJ, Šarić A. Physical mechanisms of amyloid nucleation
on fluid membranes. Proceedings of the National Academy of Sciences. 2020;117(52):33090-33098.
doi:10.1073/pnas.2007694117
apa: Krausser, J., Knowles, T. P. J., & Šarić, A. (2020). Physical mechanisms
of amyloid nucleation on fluid membranes. Proceedings of the National Academy
of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.2007694117
chicago: Krausser, Johannes, Tuomas P. J. Knowles, and Anđela Šarić. “Physical Mechanisms
of Amyloid Nucleation on Fluid Membranes.” Proceedings of the National Academy
of Sciences. National Academy of Sciences, 2020. https://doi.org/10.1073/pnas.2007694117.
ieee: J. Krausser, T. P. J. Knowles, and A. Šarić, “Physical mechanisms of amyloid
nucleation on fluid membranes,” Proceedings of the National Academy of Sciences,
vol. 117, no. 52. National Academy of Sciences, pp. 33090–33098, 2020.
ista: Krausser J, Knowles TPJ, Šarić A. 2020. Physical mechanisms of amyloid nucleation
on fluid membranes. Proceedings of the National Academy of Sciences. 117(52),
33090–33098.
mla: Krausser, Johannes, et al. “Physical Mechanisms of Amyloid Nucleation on Fluid
Membranes.” Proceedings of the National Academy of Sciences, vol. 117,
no. 52, National Academy of Sciences, 2020, pp. 33090–98, doi:10.1073/pnas.2007694117.
short: J. Krausser, T.P.J. Knowles, A. Šarić, Proceedings of the National Academy
of Sciences 117 (2020) 33090–33098.
date_created: 2021-11-25T15:07:09Z
date_published: 2020-12-16T00:00:00Z
date_updated: 2021-11-25T15:35:58Z
day: '16'
doi: 10.1073/pnas.2007694117
extern: '1'
external_id:
pmid:
- '33328273'
intvolume: ' 117'
issue: '52'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2019.12.22.886267v2
month: '12'
oa: 1
oa_version: Published Version
page: 33090-33098
pmid: 1
publication: Proceedings of the National Academy of Sciences
publication_identifier:
eissn:
- 1091-6490
issn:
- 0027-8424
publication_status: published
publisher: National Academy of Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: Physical mechanisms of amyloid nucleation on fluid membranes
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 117
year: '2020'
...
---
_id: '10342'
abstract:
- lang: eng
text: The blood-brain barrier is made of polarized brain endothelial cells (BECs)
phenotypically conditioned by the central nervous system (CNS). Although transport
across BECs is of paramount importance for nutrient uptake as well as ridding
the brain of waste products, the intracellular sorting mechanisms that regulate
successful receptor-mediated transcytosis in BECs remain to be elucidated. Here,
we used a synthetic multivalent system with tunable avidity to the low-density
lipoprotein receptor–related protein 1 (LRP1) to investigate the mechanisms of
transport across BECs. We used a combination of conventional and super-resolution
microscopy, both in vivo and in vitro, accompanied with biophysical modeling of
transport kinetics and membrane-bound interactions to elucidate the role of membrane-sculpting
protein syndapin-2 on fast transport via tubule formation. We show that high-avidity
cargo biases the LRP1 toward internalization associated with fast degradation,
while mid-avidity augments the formation of syndapin-2 tubular carriers promoting
a fast shuttling across.
acknowledgement: 'Funding: G.B. thanks the ERC for the starting grant (MEViC 278793)
and consolidator award (CheSSTaG 769798), EPSRC/BTG Healthcare Partnership (EP/I001697/1),
EPSRC Established Career Fellowship (EP/N026322/1), EPSRC/SomaNautix Healthcare
Partnership EP/R024723/1, and Children with Cancer UK for the research project (16-227).
X.T. and G.B. thank that Anhui 100 Talent program for facilitating data sharing
and research visits. A.D.-C. and L.R. acknowledge the Royal Society for a Newton
fellowship and the Marie Skłodowska-Curie Actions for a European Fellowship. Author
contributions: X.T. prepared and characterized POs, performed all the fast imaging
in both conventional and STED microscopy, set up the initial BBB model, encapsulated
the PtA2 in POs, and supervised the PtA2-PO animal work. D.M.L. prepared and characterized
POs; performed all the permeability studies, PLA assays, WB and associated data
analysis, and part of the colocalization assays; and performed experiments with
the shRNA for knockdown of syndapin-2. E.S. prepared and characterized POs and performed
part of colocalization assays and Cy7-labeled PO animal experiments. S.N. prepared
and characterized POs and performed part of the colocalization and inhibition assays.
G.F. designed, performed, and analyzed the agent-based simulations of transcytosis.
J.F. designed the image-based algorithm to analyze the PLA data. D.M. prepared and
characterized POs and helped with Cy7-labeled PO animal experiments. A.A. performed
TEM imaging of the POs. A.P. and A.D.-C. synthesized the dye- and peptide-functionalized
and pristine copolymers. M.V., L.H.-K., and A.Š. designed, performed, and analyzed
the MD simulations. Z.Z. supervised and supported STED imaging. P.X., B.F., and
Y.T. synthesized and characterized the PtA2 compound. L.L. performed some of the
animal work. L.R. supported and helped with the BBB characterization. G.B. analyzed
all fast imaging and supervised and coordinated the overall work. X.T., D.M.L.,
E.S., and G.B. wrote the manuscript. Competing interests: The authors declare that
part of the work is associated with the UCL spin-out company SomaNautix Ltd. Data
and materials availability: All data needed to evaluate the conclusions in the paper
are present in the paper and/or the Supplementary Materials. Additional data related
to this paper may be requested from the authors.'
article_number: 'eabc4397 '
article_processing_charge: No
article_type: original
author:
- first_name: Xiaohe
full_name: Tian, Xiaohe
last_name: Tian
- first_name: Diana M.
full_name: Leite, Diana M.
last_name: Leite
- first_name: Edoardo
full_name: Scarpa, Edoardo
last_name: Scarpa
- first_name: Sophie
full_name: Nyberg, Sophie
last_name: Nyberg
- first_name: Gavin
full_name: Fullstone, Gavin
last_name: Fullstone
- first_name: Joe
full_name: Forth, Joe
last_name: Forth
- first_name: Diana
full_name: Matias, Diana
last_name: Matias
- first_name: Azzurra
full_name: Apriceno, Azzurra
last_name: Apriceno
- first_name: Alessandro
full_name: Poma, Alessandro
last_name: Poma
- first_name: Aroa
full_name: Duro-Castano, Aroa
last_name: Duro-Castano
- first_name: Manish
full_name: Vuyyuru, Manish
last_name: Vuyyuru
- first_name: Lena
full_name: Harker-Kirschneck, Lena
last_name: Harker-Kirschneck
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Zhongping
full_name: Zhang, Zhongping
last_name: Zhang
- first_name: Pan
full_name: Xiang, Pan
last_name: Xiang
- first_name: Bin
full_name: Fang, Bin
last_name: Fang
- first_name: Yupeng
full_name: Tian, Yupeng
last_name: Tian
- first_name: Lei
full_name: Luo, Lei
last_name: Luo
- first_name: Loris
full_name: Rizzello, Loris
last_name: Rizzello
- first_name: Giuseppe
full_name: Battaglia, Giuseppe
last_name: Battaglia
citation:
ama: 'Tian X, Leite DM, Scarpa E, et al. On the shuttling across the blood-brain
barrier via tubule formation: Mechanism and cargo avidity bias. Science Advances.
2020;6(48). doi:10.1126/sciadv.abc4397'
apa: 'Tian, X., Leite, D. M., Scarpa, E., Nyberg, S., Fullstone, G., Forth, J.,
… Battaglia, G. (2020). On the shuttling across the blood-brain barrier via tubule
formation: Mechanism and cargo avidity bias. Science Advances. American
Association for the Advancement of Science. https://doi.org/10.1126/sciadv.abc4397'
chicago: 'Tian, Xiaohe, Diana M. Leite, Edoardo Scarpa, Sophie Nyberg, Gavin Fullstone,
Joe Forth, Diana Matias, et al. “On the Shuttling across the Blood-Brain Barrier
via Tubule Formation: Mechanism and Cargo Avidity Bias.” Science Advances.
American Association for the Advancement of Science, 2020. https://doi.org/10.1126/sciadv.abc4397.'
ieee: 'X. Tian et al., “On the shuttling across the blood-brain barrier via
tubule formation: Mechanism and cargo avidity bias,” Science Advances,
vol. 6, no. 48. American Association for the Advancement of Science, 2020.'
ista: 'Tian X, Leite DM, Scarpa E, Nyberg S, Fullstone G, Forth J, Matias D, Apriceno
A, Poma A, Duro-Castano A, Vuyyuru M, Harker-Kirschneck L, Šarić A, Zhang Z, Xiang
P, Fang B, Tian Y, Luo L, Rizzello L, Battaglia G. 2020. On the shuttling across
the blood-brain barrier via tubule formation: Mechanism and cargo avidity bias.
Science Advances. 6(48), eabc4397.'
mla: 'Tian, Xiaohe, et al. “On the Shuttling across the Blood-Brain Barrier via
Tubule Formation: Mechanism and Cargo Avidity Bias.” Science Advances,
vol. 6, no. 48, eabc4397, American Association for the Advancement of Science,
2020, doi:10.1126/sciadv.abc4397.'
short: X. Tian, D.M. Leite, E. Scarpa, S. Nyberg, G. Fullstone, J. Forth, D. Matias,
A. Apriceno, A. Poma, A. Duro-Castano, M. Vuyyuru, L. Harker-Kirschneck, A. Šarić,
Z. Zhang, P. Xiang, B. Fang, Y. Tian, L. Luo, L. Rizzello, G. Battaglia, Science
Advances 6 (2020).
date_created: 2021-11-26T06:40:28Z
date_published: 2020-11-27T00:00:00Z
date_updated: 2021-11-26T07:00:24Z
day: '27'
ddc:
- '611'
doi: 10.1126/sciadv.abc4397
extern: '1'
external_id:
pmid:
- '33246953'
file:
- access_level: open_access
checksum: 3ba2eca975930cdb0b1ce1ae876885a7
content_type: application/pdf
creator: cchlebak
date_created: 2021-11-26T06:50:09Z
date_updated: 2021-11-26T06:50:09Z
file_id: '10343'
file_name: 2020_SciAdv_Tian.pdf
file_size: 10381298
relation: main_file
success: 1
file_date_updated: 2021-11-26T06:50:09Z
has_accepted_license: '1'
intvolume: ' 6'
issue: '48'
keyword:
- multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2020.04.04.025866v1
month: '11'
oa: 1
oa_version: Published Version
pmid: 1
publication: Science Advances
publication_identifier:
issn:
- 2375-2548
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'On the shuttling across the blood-brain barrier via tubule formation: Mechanism
and cargo avidity bias'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 6
year: '2020'
...
---
_id: '10344'
abstract:
- lang: eng
text: In this study, we investigate the role of the surface patterning of nanostructures
for cell membrane reshaping. To accomplish this, we combine an evolutionary algorithm
with coarse-grained molecular dynamics simulations and explore the solution space
of ligand patterns on a nanoparticle that promote efficient and reliable cell
uptake. Surprisingly, we find that in the regime of low ligand number the best-performing
structures are characterized by ligands arranged into long one-dimensional chains
that pattern the surface of the particle. We show that these chains of ligands
provide particles with high rotational freedom and they lower the free energy
barrier for membrane crossing. Our approach reveals a set of nonintuitive design
rules that can be used to inform artificial nanoparticle construction and the
search for inhibitors of viral entry.
acknowledgement: We acknowledge support from EPSRC (J. C. F.), MRC (B. B. and A. Š.),
the ERC StG 802960 “NEPA” (J. K. and A. Š.), the Royal Society (A. Š.), and the
United Kingdom Materials and Molecular Modelling Hub for computational resources,
which is partially funded by EPSRC (EP/P020194/1).
article_number: '228101'
article_processing_charge: No
article_type: original
author:
- first_name: Joel C.
full_name: Forster, Joel C.
last_name: Forster
- first_name: Johannes
full_name: Krausser, Johannes
last_name: Krausser
- first_name: Manish R.
full_name: Vuyyuru, Manish R.
last_name: Vuyyuru
- first_name: Buzz
full_name: Baum, Buzz
last_name: Baum
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
citation:
ama: Forster JC, Krausser J, Vuyyuru MR, Baum B, Šarić A. Exploring the design rules
for efficient membrane-reshaping nanostructures. Physical Review Letters.
2020;125(22). doi:10.1103/physrevlett.125.228101
apa: Forster, J. C., Krausser, J., Vuyyuru, M. R., Baum, B., & Šarić, A. (2020).
Exploring the design rules for efficient membrane-reshaping nanostructures. Physical
Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.125.228101
chicago: Forster, Joel C., Johannes Krausser, Manish R. Vuyyuru, Buzz Baum, and
Anđela Šarić. “Exploring the Design Rules for Efficient Membrane-Reshaping Nanostructures.”
Physical Review Letters. American Physical Society, 2020. https://doi.org/10.1103/physrevlett.125.228101.
ieee: J. C. Forster, J. Krausser, M. R. Vuyyuru, B. Baum, and A. Šarić, “Exploring
the design rules for efficient membrane-reshaping nanostructures,” Physical
Review Letters, vol. 125, no. 22. American Physical Society, 2020.
ista: Forster JC, Krausser J, Vuyyuru MR, Baum B, Šarić A. 2020. Exploring the design
rules for efficient membrane-reshaping nanostructures. Physical Review Letters.
125(22), 228101.
mla: Forster, Joel C., et al. “Exploring the Design Rules for Efficient Membrane-Reshaping
Nanostructures.” Physical Review Letters, vol. 125, no. 22, 228101, American
Physical Society, 2020, doi:10.1103/physrevlett.125.228101.
short: J.C. Forster, J. Krausser, M.R. Vuyyuru, B. Baum, A. Šarić, Physical Review
Letters 125 (2020).
date_created: 2021-11-26T07:10:43Z
date_published: 2020-11-23T00:00:00Z
date_updated: 2021-11-30T08:33:14Z
day: '23'
ddc:
- '530'
doi: 10.1103/physrevlett.125.228101
extern: '1'
external_id:
pmid:
- '33315453'
file:
- access_level: open_access
checksum: fbf2e1415e332d6add90222d60401a1d
content_type: application/pdf
creator: cchlebak
date_created: 2021-11-26T07:16:49Z
date_updated: 2021-11-26T07:16:49Z
file_id: '10345'
file_name: 2020_PhysRevLett_Forster.pdf
file_size: 844353
relation: main_file
success: 1
file_date_updated: 2021-11-26T07:16:49Z
has_accepted_license: '1'
intvolume: ' 125'
issue: '22'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2020.02.27.968149v1
month: '11'
oa: 1
oa_version: Published Version
pmid: 1
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Exploring the design rules for efficient membrane-reshaping nanostructures
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 125
year: '2020'
...
---
_id: '10341'
abstract:
- lang: eng
text: Tracing the motion of macromolecules, viruses, and nanoparticles adsorbed
onto cell membranes is currently the most direct way of probing the complex dynamic
interactions behind vital biological processes, including cell signalling, trafficking,
and viral infection. The resulting trajectories are usually consistent with some
type of anomalous diffusion, but the molecular origins behind the observed anomalous
behaviour are usually not obvious. Here we use coarse-grained molecular dynamics
simulations to help identify the physical mechanisms that can give rise to experimentally
observed trajectories of nanoscopic objects moving on biological membranes. We
find that diffusion on membranes of high fluidities typically results in normal
diffusion of the adsorbed nanoparticle, irrespective of the concentration of receptors,
receptor clustering, or multivalent interactions between the particle and membrane
receptors. Gel-like membranes on the other hand result in anomalous diffusion
of the particle, which becomes more pronounced at higher receptor concentrations.
This anomalous diffusion is characterised by local particle trapping in the regions
of high receptor concentrations and fast hopping between such regions. The normal
diffusion is recovered in the limit where the gel membrane is saturated with receptors.
We conclude that hindered receptor diffusivity can be a common reason behind the
observed anomalous diffusion of viruses, vesicles, and nanoparticles adsorbed
on cell and model membranes. Our results enable direct comparison with experiments
and offer a new route for interpreting motility experiments on cell membranes.
acknowledgement: We thank Jessica McQuade for her input at the start of the project.
We acknowledge support from the ERASMUS Placement Programme (V. E. D.), the UCL
Institute for the Physics of Living Systems (V. E. D. and A. Š.), the UCL Global
Engagement Fund (L. M. C. J.), and the Royal Society (A. Š.).
article_processing_charge: No
article_type: original
author:
- first_name: V. E.
full_name: Debets, V. E.
last_name: Debets
- first_name: L. M. C.
full_name: Janssen, L. M. C.
last_name: Janssen
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
citation:
ama: Debets VE, Janssen LMC, Šarić A. Characterising the diffusion of biological
nanoparticles on fluid and cross-linked membranes. Soft Matter. 2020;16(47):10628-10639.
doi:10.1039/d0sm00712a
apa: Debets, V. E., Janssen, L. M. C., & Šarić, A. (2020). Characterising the
diffusion of biological nanoparticles on fluid and cross-linked membranes. Soft
Matter. Royal Society of Chemistry. https://doi.org/10.1039/d0sm00712a
chicago: Debets, V. E., L. M. C. Janssen, and Anđela Šarić. “Characterising the
Diffusion of Biological Nanoparticles on Fluid and Cross-Linked Membranes.” Soft
Matter. Royal Society of Chemistry, 2020. https://doi.org/10.1039/d0sm00712a.
ieee: V. E. Debets, L. M. C. Janssen, and A. Šarić, “Characterising the diffusion
of biological nanoparticles on fluid and cross-linked membranes,” Soft Matter,
vol. 16, no. 47. Royal Society of Chemistry, pp. 10628–10639, 2020.
ista: Debets VE, Janssen LMC, Šarić A. 2020. Characterising the diffusion of biological
nanoparticles on fluid and cross-linked membranes. Soft Matter. 16(47), 10628–10639.
mla: Debets, V. E., et al. “Characterising the Diffusion of Biological Nanoparticles
on Fluid and Cross-Linked Membranes.” Soft Matter, vol. 16, no. 47, Royal
Society of Chemistry, 2020, pp. 10628–39, doi:10.1039/d0sm00712a.
short: V.E. Debets, L.M.C. Janssen, A. Šarić, Soft Matter 16 (2020) 10628–10639.
date_created: 2021-11-26T06:29:41Z
date_published: 2020-10-06T00:00:00Z
date_updated: 2021-11-26T07:00:33Z
day: '06'
doi: 10.1039/d0sm00712a
extern: '1'
external_id:
pmid:
- '33084724'
intvolume: ' 16'
issue: '47'
keyword:
- condensed matter physics
- general chemistry
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2020.05.01.071761v1
month: '10'
oa: 1
oa_version: Published Version
page: 10628-10639
pmid: 1
publication: Soft Matter
publication_identifier:
issn:
- 1744-683X
- 1744-6848
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Characterising the diffusion of biological nanoparticles on fluid and cross-linked
membranes
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 16
year: '2020'
...
---
_id: '10346'
abstract:
- lang: eng
text: One of the most robust examples of self-assembly in living organisms is the
formation of collagen architectures. Collagen type I molecules are a crucial component
of the extracellular matrix, where they self-assemble into fibrils of well-defined
axial striped patterns. This striped fibrillar pattern is preserved across the
animal kingdom and is important for the determination of cell phenotype, cell
adhesion, and tissue regulation and signaling. The understanding of the physical
processes that determine such a robust morphology of self-assembled collagen fibrils
is currently almost completely missing. Here, we develop a minimal coarse-grained
computational model to identify the physical principles of the assembly of collagen-mimetic
molecules. We find that screened electrostatic interactions can drive the formation
of collagen-like filaments of well-defined striped morphologies. The fibril axial
pattern is determined solely by the distribution of charges on the molecule and
is robust to the changes in protein concentration, monomer rigidity, and environmental
conditions. We show that the striped fibrillar pattern cannot be easily predicted
from the interactions between two monomers but is an emergent result of multibody
interactions. Our results can help address collagen remodeling in diseases and
aging and guide the design of collagen scaffolds for biotechnological applications.
acknowledgement: We thank Melinda Duer, Patrick Mesquida, Lucy Colwell, Lucie Liu,
Daan Frenkel, and Ivan Palaia for helpful discussions. We acknowledge support from
the Engineering and Physical Sciences Research Council (A.E.H., L.K.D., and A.Š.),
Biotechnology and Biological Sciences Research Council LIDo programme (N.G.G. and
C.A.B.), the Royal Society (A.Š.), and the UK Materials and Molecular Modelling
Hub for computational resources, which is partially funded by EPSRC ( EP/P020194/1).
article_processing_charge: No
article_type: original
author:
- first_name: Anne E.
full_name: Hafner, Anne E.
last_name: Hafner
- first_name: Noemi G.
full_name: Gyori, Noemi G.
last_name: Gyori
- first_name: Ciaran A.
full_name: Bench, Ciaran A.
last_name: Bench
- first_name: Luke K.
full_name: Davis, Luke K.
last_name: Davis
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
citation:
ama: Hafner AE, Gyori NG, Bench CA, Davis LK, Šarić A. Modeling fibrillogenesis
of collagen-mimetic molecules. Biophysical Journal. 2020;119(9):1791-1799.
doi:10.1016/j.bpj.2020.09.013
apa: Hafner, A. E., Gyori, N. G., Bench, C. A., Davis, L. K., & Šarić, A. (2020).
Modeling fibrillogenesis of collagen-mimetic molecules. Biophysical Journal.
Cell Press. https://doi.org/10.1016/j.bpj.2020.09.013
chicago: Hafner, Anne E., Noemi G. Gyori, Ciaran A. Bench, Luke K. Davis, and Anđela
Šarić. “Modeling Fibrillogenesis of Collagen-Mimetic Molecules.” Biophysical
Journal. Cell Press, 2020. https://doi.org/10.1016/j.bpj.2020.09.013.
ieee: A. E. Hafner, N. G. Gyori, C. A. Bench, L. K. Davis, and A. Šarić, “Modeling
fibrillogenesis of collagen-mimetic molecules,” Biophysical Journal, vol.
119, no. 9. Cell Press, pp. 1791–1799, 2020.
ista: Hafner AE, Gyori NG, Bench CA, Davis LK, Šarić A. 2020. Modeling fibrillogenesis
of collagen-mimetic molecules. Biophysical Journal. 119(9), 1791–1799.
mla: Hafner, Anne E., et al. “Modeling Fibrillogenesis of Collagen-Mimetic Molecules.”
Biophysical Journal, vol. 119, no. 9, Cell Press, 2020, pp. 1791–99, doi:10.1016/j.bpj.2020.09.013.
short: A.E. Hafner, N.G. Gyori, C.A. Bench, L.K. Davis, A. Šarić, Biophysical Journal
119 (2020) 1791–1799.
date_created: 2021-11-26T07:27:24Z
date_published: 2020-09-23T00:00:00Z
date_updated: 2021-11-26T07:45:24Z
day: '23'
doi: 10.1016/j.bpj.2020.09.013
extern: '1'
external_id:
pmid:
- '33049216'
intvolume: ' 119'
issue: '9'
keyword:
- biophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2020.06.08.140061v1
month: '09'
oa: 1
oa_version: Published Version
page: 1791-1799
pmid: 1
publication: Biophysical Journal
publication_identifier:
issn:
- 0006-3495
publication_status: published
publisher: Cell Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Modeling fibrillogenesis of collagen-mimetic molecules
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 119
year: '2020'
...
---
_id: '10350'
abstract:
- lang: eng
text: The misfolding and aberrant aggregation of proteins into fibrillar structures
is a key factor in some of the most prevalent human diseases, including diabetes
and dementia. Low molecular weight oligomers are thought to be a central factor
in the pathology of these diseases, as well as critical intermediates in the fibril
formation process, and as such have received much recent attention. Moreover,
on-pathway oligomeric intermediates are potential targets for therapeutic strategies
aimed at interrupting the fibril formation process. However, a consistent framework
for distinguishing on-pathway from off-pathway oligomers has hitherto been lacking
and, in particular, no consensus definition of on- and off-pathway oligomers is
available. In this paper, we argue that a non-binary definition of oligomers'
contribution to fibril-forming pathways may be more informative and we suggest
a quantitative framework, in which each oligomeric species is assigned a value
between 0 and 1 describing its relative contribution to the formation of fibrils.
First, we clarify the distinction between oligomers and fibrils, and then we use
the formalism of reaction networks to develop a general definition for on-pathway
oligomers, that yields meaningful classifications in the context of amyloid formation.
By applying these concepts to Monte Carlo simulations of a minimal aggregating
system, and by revisiting several previous studies of amyloid oligomers in light
of our new framework, we demonstrate how to perform these classifications in practice.
For each oligomeric species we obtain the degree to which it is on-pathway, highlighting
the most effective pharmaceutical targets for the inhibition of amyloid fibril
formation.
acknowledgement: We are grateful to the Schiff Foundation (AJD), Peterhouse, Cambridge
(TCTM), the Swiss National Science foundation (TCTM), Ramon Jenkins Fellowship,
Sidney Sussex, Cambridge (GM), the Royal Society (AŠ), the Academy of Medical Sciences
and Wellcome Trust (AŠ), the Danish Research Council (MK), the Lundbeck Foundation
(MK), the Swedish Research Council (SL), the Wellcome Trust (TPJK), the Cambridge
Centre for Misfolding Diseases (TPJK), the BBSRC (TPJK), the Frances and Augustus
Newman Foundation (TPJK) for financial support. The research leading to these results
has received funding from the European Research Council under the European Union's
Seventh Framework Programme (FP7/2007-2013) through the ERC grants PhysProt (agreement
no. 337969), MAMBA (agreement no. 340890) and NovoNordiskFonden (SL).
article_processing_charge: No
article_type: original
author:
- first_name: Alexander J.
full_name: Dear, Alexander J.
last_name: Dear
- first_name: Georg
full_name: Meisl, Georg
last_name: Meisl
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Thomas C. T.
full_name: Michaels, Thomas C. T.
last_name: Michaels
- first_name: Magnus
full_name: Kjaergaard, Magnus
last_name: Kjaergaard
- first_name: Sara
full_name: Linse, Sara
last_name: Linse
- first_name: Tuomas P. J.
full_name: Knowles, Tuomas P. J.
last_name: Knowles
citation:
ama: Dear AJ, Meisl G, Šarić A, et al. Identification of on- and off-pathway oligomers
in amyloid fibril formation. Chemical Science. 2020;11(24):6236-6247. doi:10.1039/c9sc06501f
apa: Dear, A. J., Meisl, G., Šarić, A., Michaels, T. C. T., Kjaergaard, M., Linse,
S., & Knowles, T. P. J. (2020). Identification of on- and off-pathway oligomers
in amyloid fibril formation. Chemical Science. Royal Society of Chemistry.
https://doi.org/10.1039/c9sc06501f
chicago: Dear, Alexander J., Georg Meisl, Anđela Šarić, Thomas C. T. Michaels, Magnus
Kjaergaard, Sara Linse, and Tuomas P. J. Knowles. “Identification of On- and off-Pathway
Oligomers in Amyloid Fibril Formation.” Chemical Science. Royal Society
of Chemistry, 2020. https://doi.org/10.1039/c9sc06501f.
ieee: A. J. Dear et al., “Identification of on- and off-pathway oligomers
in amyloid fibril formation,” Chemical Science, vol. 11, no. 24. Royal
Society of Chemistry, pp. 6236–6247, 2020.
ista: Dear AJ, Meisl G, Šarić A, Michaels TCT, Kjaergaard M, Linse S, Knowles TPJ.
2020. Identification of on- and off-pathway oligomers in amyloid fibril formation.
Chemical Science. 11(24), 6236–6247.
mla: Dear, Alexander J., et al. “Identification of On- and off-Pathway Oligomers
in Amyloid Fibril Formation.” Chemical Science, vol. 11, no. 24, Royal
Society of Chemistry, 2020, pp. 6236–47, doi:10.1039/c9sc06501f.
short: A.J. Dear, G. Meisl, A. Šarić, T.C.T. Michaels, M. Kjaergaard, S. Linse,
T.P.J. Knowles, Chemical Science 11 (2020) 6236–6247.
date_created: 2021-11-26T09:08:19Z
date_published: 2020-06-08T00:00:00Z
date_updated: 2021-11-26T11:21:20Z
day: '08'
doi: 10.1039/c9sc06501f
extern: '1'
external_id:
pmid:
- '32953019'
intvolume: ' 11'
issue: '24'
keyword:
- general chemistry
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc/3.0/
main_file_link:
- open_access: '1'
url: https://pubs.rsc.org/en/content/articlehtml/2020/sc/c9sc06501f
month: '06'
oa: 1
oa_version: Published Version
page: 6236-6247
pmid: 1
publication: Chemical Science
publication_identifier:
eissn:
- 2041-6539
issn:
- 2041-6520
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Identification of on- and off-pathway oligomers in amyloid fibril formation
tmp:
image: /images/cc_by_nc.png
legal_code_url: https://creativecommons.org/licenses/by-nc/3.0/legalcode
name: Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
short: CC BY-NC (3.0)
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 11
year: '2020'
...
---
_id: '10349'
abstract:
- lang: eng
text: Sulfolobus acidocaldarius is the closest experimentally tractable archaeal
relative of eukaryotes and, despite lacking obvious cyclin-dependent kinase and
cyclin homologs, has an ordered eukaryote-like cell cycle with distinct phases
of DNA replication and division. Here, in exploring the mechanism of cell division
in S. acidocaldarius, we identify a role for the archaeal proteasome in regulating
the transition from the end of one cell cycle to the beginning of the next. Further,
we identify the archaeal ESCRT-III homolog, CdvB, as a key target of the proteasome
and show that its degradation triggers division by allowing constriction of the
CdvB1:CdvB2 ESCRT-III division ring. These findings offer a minimal mechanism
for ESCRT-III–mediated membrane remodeling and point to a conserved role for the
proteasome in eukaryotic and archaeal cell cycle control.
acknowledgement: "We thank the MRC LMCB at UCL for their support; the flow cytometry
STP at the Francis Crick Institute for assistance, with special thanks to S. Purewal
and D. Davis; C. Bertoli for mentorship\r\nand advice; J. M. Garcia-Arcos for help
early on in this project; the entire Baum lab for their input throughout the project;
the Albers lab for advice and reagents, with special thanks to M. Van Wolferen and
S. Albers; the members of the Wellcome consortium for archaeal cytoskeleton studies
for advice and comments; and J. Löwe, S. Oliferenko, M. Balasubramanian, and D.
Gerlich for discussions and advice on the manuscript. N.P.R. and S.B. would like
to thank N. Rzechorzek, A. Simon, and S. Anjum for discussion and advice."
article_processing_charge: No
article_type: original
author:
- first_name: Gabriel
full_name: Tarrason Risa, Gabriel
last_name: Tarrason Risa
- first_name: Fredrik
full_name: Hurtig, Fredrik
last_name: Hurtig
- first_name: Sian
full_name: Bray, Sian
last_name: Bray
- first_name: Anne E.
full_name: Hafner, Anne E.
last_name: Hafner
- first_name: Lena
full_name: Harker-Kirschneck, Lena
last_name: Harker-Kirschneck
- first_name: Peter
full_name: Faull, Peter
last_name: Faull
- first_name: Colin
full_name: Davis, Colin
last_name: Davis
- first_name: Dimitra
full_name: Papatziamou, Dimitra
last_name: Papatziamou
- first_name: Delyan R.
full_name: Mutavchiev, Delyan R.
last_name: Mutavchiev
- first_name: Catherine
full_name: Fan, Catherine
last_name: Fan
- first_name: Leticia
full_name: Meneguello, Leticia
last_name: Meneguello
- first_name: Andre
full_name: Arashiro Pulschen, Andre
last_name: Arashiro Pulschen
- first_name: Gautam
full_name: Dey, Gautam
last_name: Dey
- first_name: Siân
full_name: Culley, Siân
last_name: Culley
- first_name: Mairi
full_name: Kilkenny, Mairi
last_name: Kilkenny
- first_name: Diorge P.
full_name: Souza, Diorge P.
last_name: Souza
- first_name: Luca
full_name: Pellegrini, Luca
last_name: Pellegrini
- first_name: Robertus A. M.
full_name: de Bruin, Robertus A. M.
last_name: de Bruin
- first_name: Ricardo
full_name: Henriques, Ricardo
last_name: Henriques
- first_name: Ambrosius P.
full_name: Snijders, Ambrosius P.
last_name: Snijders
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Ann-Christin
full_name: Lindås, Ann-Christin
last_name: Lindås
- first_name: Nicholas P.
full_name: Robinson, Nicholas P.
last_name: Robinson
- first_name: Buzz
full_name: Baum, Buzz
last_name: Baum
citation:
ama: Tarrason Risa G, Hurtig F, Bray S, et al. The proteasome controls ESCRT-III–mediated
cell division in an archaeon. Science. 2020;369(6504). doi:10.1126/science.aaz2532
apa: Tarrason Risa, G., Hurtig, F., Bray, S., Hafner, A. E., Harker-Kirschneck,
L., Faull, P., … Baum, B. (2020). The proteasome controls ESCRT-III–mediated cell
division in an archaeon. Science. American Association for the Advancement
of Science. https://doi.org/10.1126/science.aaz2532
chicago: Tarrason Risa, Gabriel, Fredrik Hurtig, Sian Bray, Anne E. Hafner, Lena
Harker-Kirschneck, Peter Faull, Colin Davis, et al. “The Proteasome Controls ESCRT-III–Mediated
Cell Division in an Archaeon.” Science. American Association for the Advancement
of Science, 2020. https://doi.org/10.1126/science.aaz2532.
ieee: G. Tarrason Risa et al., “The proteasome controls ESCRT-III–mediated
cell division in an archaeon,” Science, vol. 369, no. 6504. American Association
for the Advancement of Science, 2020.
ista: Tarrason Risa G, Hurtig F, Bray S, Hafner AE, Harker-Kirschneck L, Faull P,
Davis C, Papatziamou D, Mutavchiev DR, Fan C, Meneguello L, Arashiro Pulschen
A, Dey G, Culley S, Kilkenny M, Souza DP, Pellegrini L, de Bruin RAM, Henriques
R, Snijders AP, Šarić A, Lindås A-C, Robinson NP, Baum B. 2020. The proteasome
controls ESCRT-III–mediated cell division in an archaeon. Science. 369(6504).
mla: Tarrason Risa, Gabriel, et al. “The Proteasome Controls ESCRT-III–Mediated
Cell Division in an Archaeon.” Science, vol. 369, no. 6504, American Association
for the Advancement of Science, 2020, doi:10.1126/science.aaz2532.
short: G. Tarrason Risa, F. Hurtig, S. Bray, A.E. Hafner, L. Harker-Kirschneck,
P. Faull, C. Davis, D. Papatziamou, D.R. Mutavchiev, C. Fan, L. Meneguello, A.
Arashiro Pulschen, G. Dey, S. Culley, M. Kilkenny, D.P. Souza, L. Pellegrini,
R.A.M. de Bruin, R. Henriques, A.P. Snijders, A. Šarić, A.-C. Lindås, N.P. Robinson,
B. Baum, Science 369 (2020).
date_created: 2021-11-26T08:21:34Z
date_published: 2020-08-07T00:00:00Z
date_updated: 2021-11-26T08:58:33Z
day: '07'
doi: 10.1126/science.aaz2532
extern: '1'
external_id:
pmid:
- '32764038'
intvolume: ' 369'
issue: '6504'
keyword:
- multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/774273v1
month: '08'
oa: 1
oa_version: Preprint
pmid: 1
publication: Science
publication_identifier:
eissn:
- 1095-9203
issn:
- 0036-8075
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: The proteasome controls ESCRT-III–mediated cell division in an archaeon
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 369
year: '2020'
...
---
_id: '10347'
abstract:
- lang: eng
text: Understanding the mechanism of action of compounds capable of inhibiting amyloid-fibril
formation is critical to the development of potential therapeutics against protein-misfolding
diseases. A fundamental challenge for progress is the range of possible target
species and the disparate timescales involved, since the aggregating proteins
are simultaneously the reactants, products, intermediates, and catalysts of the
reaction. It is a complex problem, therefore, to choose the states of the aggregating
proteins that should be bound by the compounds to achieve the most potent inhibition.
We present here a comprehensive kinetic theory of amyloid-aggregation inhibition
that reveals the fundamental thermodynamic and kinetic signatures characterizing
effective inhibitors by identifying quantitative relationships between the aggregation
and binding rate constants. These results provide general physical laws to guide
the design and optimization of inhibitors of amyloid-fibril formation, revealing
in particular the important role of on-rates in the binding of the inhibitors.
acknowledgement: We acknowledge support from Peterhouse, Cambridge (T.C.T.M.); the
Swiss National Science Foundation (T.C.T.M.); the Royal Society (A.S. and S.C.);
the Academy of Medical Sciences (A.S.); Sidney Sussex College, Cambridge (G.M.);
Newnham College, Cambridge (G.T.H.); the Wellcome Trust (T.P.J.K.); the Cambridge
Center for Misfolding Diseases (T.P.J.K. and M.V.); the Biotechnology and Biological
Sciences Research Council (T.P.J.K.); the Frances and Augustus Newman Foundation
(T.P.J.K.); and the Synapsis Foundation for Alzheimer’s disease (P.A.). The research
leading to these results has received funding from the European Research Council
(ERC) under the European Union’s Seventh Framework Program (FP7/2007-2013) through
the ERC Grant PhysProt (Agreement 337969).
article_processing_charge: No
article_type: original
author:
- first_name: Thomas C. T.
full_name: Michaels, Thomas C. T.
last_name: Michaels
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Georg
full_name: Meisl, Georg
last_name: Meisl
- first_name: Gabriella T.
full_name: Heller, Gabriella T.
last_name: Heller
- first_name: Samo
full_name: Curk, Samo
last_name: Curk
- first_name: Paolo
full_name: Arosio, Paolo
last_name: Arosio
- first_name: Sara
full_name: Linse, Sara
last_name: Linse
- first_name: Christopher M.
full_name: Dobson, Christopher M.
last_name: Dobson
- first_name: Michele
full_name: Vendruscolo, Michele
last_name: Vendruscolo
- first_name: Tuomas P. J.
full_name: Knowles, Tuomas P. J.
last_name: Knowles
citation:
ama: Michaels TCT, Šarić A, Meisl G, et al. Thermodynamic and kinetic design principles
for amyloid-aggregation inhibitors. Proceedings of the National Academy of
Sciences. 2020;117(39):24251-24257. doi:10.1073/pnas.2006684117
apa: Michaels, T. C. T., Šarić, A., Meisl, G., Heller, G. T., Curk, S., Arosio,
P., … Knowles, T. P. J. (2020). Thermodynamic and kinetic design principles for
amyloid-aggregation inhibitors. Proceedings of the National Academy of Sciences.
National Academy of Sciences. https://doi.org/10.1073/pnas.2006684117
chicago: Michaels, Thomas C. T., Anđela Šarić, Georg Meisl, Gabriella T. Heller,
Samo Curk, Paolo Arosio, Sara Linse, Christopher M. Dobson, Michele Vendruscolo,
and Tuomas P. J. Knowles. “Thermodynamic and Kinetic Design Principles for Amyloid-Aggregation
Inhibitors.” Proceedings of the National Academy of Sciences. National
Academy of Sciences, 2020. https://doi.org/10.1073/pnas.2006684117.
ieee: T. C. T. Michaels et al., “Thermodynamic and kinetic design principles
for amyloid-aggregation inhibitors,” Proceedings of the National Academy of
Sciences, vol. 117, no. 39. National Academy of Sciences, pp. 24251–24257,
2020.
ista: Michaels TCT, Šarić A, Meisl G, Heller GT, Curk S, Arosio P, Linse S, Dobson
CM, Vendruscolo M, Knowles TPJ. 2020. Thermodynamic and kinetic design principles
for amyloid-aggregation inhibitors. Proceedings of the National Academy of Sciences.
117(39), 24251–24257.
mla: Michaels, Thomas C. T., et al. “Thermodynamic and Kinetic Design Principles
for Amyloid-Aggregation Inhibitors.” Proceedings of the National Academy of
Sciences, vol. 117, no. 39, National Academy of Sciences, 2020, pp. 24251–57,
doi:10.1073/pnas.2006684117.
short: T.C.T. Michaels, A. Šarić, G. Meisl, G.T. Heller, S. Curk, P. Arosio, S.
Linse, C.M. Dobson, M. Vendruscolo, T.P.J. Knowles, Proceedings of the National
Academy of Sciences 117 (2020) 24251–24257.
date_created: 2021-11-26T07:48:27Z
date_published: 2020-09-14T00:00:00Z
date_updated: 2021-11-26T08:59:06Z
day: '14'
doi: 10.1073/pnas.2006684117
extern: '1'
external_id:
pmid:
- '32929030'
intvolume: ' 117'
issue: '39'
keyword:
- multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2020.02.22.960716
month: '09'
oa: 1
oa_version: Published Version
page: 24251-24257
pmid: 1
publication: Proceedings of the National Academy of Sciences
publication_identifier:
eissn:
- 1091-6490
issn:
- 0027-8424
publication_status: published
publisher: National Academy of Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: Thermodynamic and kinetic design principles for amyloid-aggregation inhibitors
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 117
year: '2020'
...
---
_id: '10351'
abstract:
- lang: eng
text: Oligomeric species populated during the aggregation of the Aβ42 peptide have
been identified as potent cytotoxins linked to Alzheimer’s disease, but the fundamental
molecular pathways that control their dynamics have yet to be elucidated. By developing
a general approach that combines theory, experiment and simulation, we reveal,
in molecular detail, the mechanisms of Aβ42 oligomer dynamics during amyloid fibril
formation. Even though all mature amyloid fibrils must originate as oligomers,
we found that most Aβ42 oligomers dissociate into their monomeric precursors without
forming new fibrils. Only a minority of oligomers converts into fibrillar structures.
Moreover, the heterogeneous ensemble of oligomeric species interconverts on timescales
comparable to those of aggregation. Our results identify fundamentally new steps
that could be targeted by therapeutic interventions designed to combat protein
misfolding diseases.
acknowledgement: We acknowledge support from Peterhouse (T.C.T.M.), the Swiss National
Science foundation (T.C.T.M.), the Royal Society (A.Š.), the Academy of Medical
Sciences (A.Š.), the UCL Institute for the Physics of Living Systems (S.C.), Sidney
Sussex College (G.M.), the Wellcome Trust (A.Š., M.V., C.M.D. and T.P.J.K.), the
Schiff Foundation (A.J.D.), the Cambridge Centre for Misfolding Diseases (M.V.,
C.M.D. and T.P.J.K.), the BBSRC (C.M.D. and T.P.J.K.), the Frances and Augustus
Newman Foundation (T.P.J.K.), the Swedish Research Council (S.L.) and the ERC grant
MAMBA (S.L., agreement no. 340890). The research that led to these results received
funding from the European Research Council under the European Union’s Seventh Framework
Programme (FP7/2007-2013) through the ERC grant PhysProt (agreement no. 337969).
article_processing_charge: No
article_type: original
author:
- first_name: Thomas C. T.
full_name: Michaels, Thomas C. T.
last_name: Michaels
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Samo
full_name: Curk, Samo
last_name: Curk
- first_name: Katja
full_name: Bernfur, Katja
last_name: Bernfur
- first_name: Paolo
full_name: Arosio, Paolo
last_name: Arosio
- first_name: Georg
full_name: Meisl, Georg
last_name: Meisl
- first_name: Alexander J.
full_name: Dear, Alexander J.
last_name: Dear
- first_name: Samuel I. A.
full_name: Cohen, Samuel I. A.
last_name: Cohen
- first_name: Christopher M.
full_name: Dobson, Christopher M.
last_name: Dobson
- first_name: Michele
full_name: Vendruscolo, Michele
last_name: Vendruscolo
- first_name: Sara
full_name: Linse, Sara
last_name: Linse
- first_name: Tuomas P. J.
full_name: Knowles, Tuomas P. J.
last_name: Knowles
citation:
ama: Michaels TCT, Šarić A, Curk S, et al. Dynamics of oligomer populations formed
during the aggregation of Alzheimer’s Aβ42 peptide. Nature Chemistry. 2020;12(5):445-451.
doi:10.1038/s41557-020-0452-1
apa: Michaels, T. C. T., Šarić, A., Curk, S., Bernfur, K., Arosio, P., Meisl, G.,
… Knowles, T. P. J. (2020). Dynamics of oligomer populations formed during the
aggregation of Alzheimer’s Aβ42 peptide. Nature Chemistry. Springer Nature.
https://doi.org/10.1038/s41557-020-0452-1
chicago: Michaels, Thomas C. T., Anđela Šarić, Samo Curk, Katja Bernfur, Paolo Arosio,
Georg Meisl, Alexander J. Dear, et al. “Dynamics of Oligomer Populations Formed
during the Aggregation of Alzheimer’s Aβ42 Peptide.” Nature Chemistry.
Springer Nature, 2020. https://doi.org/10.1038/s41557-020-0452-1.
ieee: T. C. T. Michaels et al., “Dynamics of oligomer populations formed
during the aggregation of Alzheimer’s Aβ42 peptide,” Nature Chemistry,
vol. 12, no. 5. Springer Nature, pp. 445–451, 2020.
ista: Michaels TCT, Šarić A, Curk S, Bernfur K, Arosio P, Meisl G, Dear AJ, Cohen
SIA, Dobson CM, Vendruscolo M, Linse S, Knowles TPJ. 2020. Dynamics of oligomer
populations formed during the aggregation of Alzheimer’s Aβ42 peptide. Nature
Chemistry. 12(5), 445–451.
mla: Michaels, Thomas C. T., et al. “Dynamics of Oligomer Populations Formed during
the Aggregation of Alzheimer’s Aβ42 Peptide.” Nature Chemistry, vol. 12,
no. 5, Springer Nature, 2020, pp. 445–51, doi:10.1038/s41557-020-0452-1.
short: T.C.T. Michaels, A. Šarić, S. Curk, K. Bernfur, P. Arosio, G. Meisl, A.J.
Dear, S.I.A. Cohen, C.M. Dobson, M. Vendruscolo, S. Linse, T.P.J. Knowles, Nature
Chemistry 12 (2020) 445–451.
date_created: 2021-11-26T09:15:13Z
date_published: 2020-04-13T00:00:00Z
date_updated: 2021-11-26T11:21:08Z
day: '13'
doi: 10.1038/s41557-020-0452-1
extern: '1'
external_id:
pmid:
- '32303714'
intvolume: ' 12'
issue: '5'
keyword:
- general chemical engineering
- general chemistry
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2020.01.08.897488
month: '04'
oa: 1
oa_version: None
page: 445-451
pmid: 1
publication: Nature Chemistry
publication_identifier:
eissn:
- 1755-4349
issn:
- 1755-4330
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: https://doi.org/10.1038/s41557-020-0468-6
scopus_import: '1'
status: public
title: Dynamics of oligomer populations formed during the aggregation of Alzheimer’s
Aβ42 peptide
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 12
year: '2020'
...
---
_id: '10348'
abstract:
- lang: eng
text: The endosomal sorting complex required for transport-III (ESCRT-III) catalyzes
membrane fission from within membrane necks, a process that is essential for many
cellular functions, from cell division to lysosome degradation and autophagy.
How it breaks membranes, though, remains unknown. Here, we characterize a sequential
polymerization of ESCRT-III subunits that, driven by a recruitment cascade and
by continuous subunit-turnover powered by the ATPase Vps4, induces membrane deformation
and fission. During this process, the exchange of Vps24 for Did2 induces a tilt
in the polymer-membrane interface, which triggers transition from flat spiral
polymers to helical filament to drive the formation of membrane protrusions, and
ends with the formation of a highly constricted Did2-Ist1 co-polymer that we show
is competent to promote fission when bound on the inside of membrane necks. Overall,
our results suggest a mechanism of stepwise changes in ESCRT-III filament structure
and mechanical properties via exchange of the filament subunits to catalyze ESCRT-III
activity.
acknowledgement: The authors thank Nicolas Chiaruttini, Jean Gruenberg, and Lena Harker-Kirschneck
for careful correction of this manuscript and helpful discussions. The authors want
to thank the NCCR Chemical Biology for constant support during this project. A.R.
acknowledges funding from the Swiss National Fund for Research (31003A_130520, 31003A_149975,
and 31003A_173087) and the European Research Council Consolidator (311536). A.Š.
acknowledges the European Research Council (802960). B.B. thanks the BBSRC (BB/K009001/1)
and Wellcome Trust (203276/Z/16/Z) for support. J.M.v.F. acknowledges funding through
an EMBO Long-Term Fellowship (ALTF 1065-2015), the European Commission FP7 (Marie
Curie Actions, LTFCOFUND2013, and GA-2013-609409), and a Transitional Postdoc fellowship
(2015/345) from the Swiss SystemsX.ch initiative, evaluated by the Swiss National
Science Foundation and Swiss National Science Foundation Research (SNSF SINERGIA
160728/1 [leader, Sophie Martin]).
article_processing_charge: No
article_type: original
author:
- first_name: Anna-Katharina
full_name: Pfitzner, Anna-Katharina
last_name: Pfitzner
- first_name: Vincent
full_name: Mercier, Vincent
last_name: Mercier
- first_name: Xiuyun
full_name: Jiang, Xiuyun
last_name: Jiang
- first_name: Joachim
full_name: Moser von Filseck, Joachim
last_name: Moser von Filseck
- first_name: Buzz
full_name: Baum, Buzz
last_name: Baum
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Aurélien
full_name: Roux, Aurélien
last_name: Roux
citation:
ama: Pfitzner A-K, Mercier V, Jiang X, et al. An ESCRT-III polymerization sequence
drives membrane deformation and fission. Cell. 2020;182(5):1140-1155.e18.
doi:10.1016/j.cell.2020.07.021
apa: Pfitzner, A.-K., Mercier, V., Jiang, X., Moser von Filseck, J., Baum, B., Šarić,
A., & Roux, A. (2020). An ESCRT-III polymerization sequence drives membrane
deformation and fission. Cell. Elsevier. https://doi.org/10.1016/j.cell.2020.07.021
chicago: Pfitzner, Anna-Katharina, Vincent Mercier, Xiuyun Jiang, Joachim Moser
von Filseck, Buzz Baum, Anđela Šarić, and Aurélien Roux. “An ESCRT-III Polymerization
Sequence Drives Membrane Deformation and Fission.” Cell. Elsevier, 2020.
https://doi.org/10.1016/j.cell.2020.07.021.
ieee: A.-K. Pfitzner et al., “An ESCRT-III polymerization sequence drives
membrane deformation and fission,” Cell, vol. 182, no. 5. Elsevier, p.
1140–1155.e18, 2020.
ista: Pfitzner A-K, Mercier V, Jiang X, Moser von Filseck J, Baum B, Šarić A, Roux
A. 2020. An ESCRT-III polymerization sequence drives membrane deformation and
fission. Cell. 182(5), 1140–1155.e18.
mla: Pfitzner, Anna-Katharina, et al. “An ESCRT-III Polymerization Sequence Drives
Membrane Deformation and Fission.” Cell, vol. 182, no. 5, Elsevier, 2020,
p. 1140–1155.e18, doi:10.1016/j.cell.2020.07.021.
short: A.-K. Pfitzner, V. Mercier, X. Jiang, J. Moser von Filseck, B. Baum, A. Šarić,
A. Roux, Cell 182 (2020) 1140–1155.e18.
date_created: 2021-11-26T08:02:27Z
date_published: 2020-08-18T00:00:00Z
date_updated: 2021-11-26T08:58:37Z
day: '18'
doi: 10.1016/j.cell.2020.07.021
extern: '1'
external_id:
pmid:
- '32814015'
intvolume: ' 182'
issue: '5'
keyword:
- general biochemistry
- genetics and molecular biology
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S0092867420309296
month: '08'
oa: 1
oa_version: Published Version
page: 1140-1155.e18
pmid: 1
publication: Cell
publication_identifier:
issn:
- 0092-8674
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: An ESCRT-III polymerization sequence drives membrane deformation and fission
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 182
year: '2020'
...
---
_id: '10352'
abstract:
- lang: eng
text: In the nuclear pore complex, intrinsically disordered nuclear pore proteins
(FG Nups) form a selective barrier for transport into and out of the cell nucleus,
in a way that remains poorly understood. The collective FG Nup behavior has long
been conceptualized either as a polymer brush, dominated by entropic and excluded-volume
(repulsive) interactions, or as a hydrogel, dominated by cohesive (attractive)
interactions between FG Nups. Here we compare mesoscale computational simulations
with a wide range of experimental data to demonstrate that FG Nups are at the
crossover point between these two regimes. Specifically, we find that repulsive
and attractive interactions are balanced, resulting in morphologies and dynamics
that are close to those of ideal polymer chains. We demonstrate that this property
of FG Nups yields sufficient cohesion to seal the transport barrier, and yet maintains
fast dynamics at the molecular scale, permitting the rapid polymer rearrangements
needed for transport events.
acknowledgement: We thank Dino Osmanović (MIT), Roy Beck (Tel-Aviv), Larissa Kapinos
(Basel), Roderick Lim (Basel), Ralf Richter (Leeds), and Anton Zilman (Toronto)
for discussions. This work was funded by the Royal Society (A.Š.) and the UK Engineering
and Physical Sciences Research Council (EP/L504889/1, B.W.H.).
article_number: '022420'
article_processing_charge: No
article_type: original
author:
- first_name: Luke K.
full_name: Davis, Luke K.
last_name: Davis
- first_name: Ian J.
full_name: Ford, Ian J.
last_name: Ford
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Bart W.
full_name: Hoogenboom, Bart W.
last_name: Hoogenboom
citation:
ama: Davis LK, Ford IJ, Šarić A, Hoogenboom BW. Intrinsically disordered nuclear
pore proteins show ideal-polymer morphologies and dynamics. Physical Review
E. 2020;101(2). doi:10.1103/physreve.101.022420
apa: Davis, L. K., Ford, I. J., Šarić, A., & Hoogenboom, B. W. (2020). Intrinsically
disordered nuclear pore proteins show ideal-polymer morphologies and dynamics.
Physical Review E. American Physical Society. https://doi.org/10.1103/physreve.101.022420
chicago: Davis, Luke K., Ian J. Ford, Anđela Šarić, and Bart W. Hoogenboom. “Intrinsically
Disordered Nuclear Pore Proteins Show Ideal-Polymer Morphologies and Dynamics.”
Physical Review E. American Physical Society, 2020. https://doi.org/10.1103/physreve.101.022420.
ieee: L. K. Davis, I. J. Ford, A. Šarić, and B. W. Hoogenboom, “Intrinsically disordered
nuclear pore proteins show ideal-polymer morphologies and dynamics,” Physical
Review E, vol. 101, no. 2. American Physical Society, 2020.
ista: Davis LK, Ford IJ, Šarić A, Hoogenboom BW. 2020. Intrinsically disordered
nuclear pore proteins show ideal-polymer morphologies and dynamics. Physical Review
E. 101(2), 022420.
mla: Davis, Luke K., et al. “Intrinsically Disordered Nuclear Pore Proteins Show
Ideal-Polymer Morphologies and Dynamics.” Physical Review E, vol. 101,
no. 2, 022420, American Physical Society, 2020, doi:10.1103/physreve.101.022420.
short: L.K. Davis, I.J. Ford, A. Šarić, B.W. Hoogenboom, Physical Review E 101 (2020).
date_created: 2021-11-26T09:41:04Z
date_published: 2020-02-28T00:00:00Z
date_updated: 2021-11-26T11:21:16Z
day: '28'
doi: 10.1103/physreve.101.022420
extern: '1'
external_id:
pmid:
- '32168597'
intvolume: ' 101'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/571687
month: '02'
oa: 1
oa_version: Preprint
pmid: 1
publication: Physical Review E
publication_identifier:
eissn:
- 2470-0053
issn:
- 2470-0045
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Intrinsically disordered nuclear pore proteins show ideal-polymer morphologies
and dynamics
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 101
year: '2020'
...
---
_id: '10353'
abstract:
- lang: eng
text: Experiments have suggested that bacterial mechanosensitive channels separate
into 2D clusters, the role of which is unclear. By developing a coarse-grained
computer model we find that clustering promotes the channel closure, which is
highly dependent on the channel concentration and membrane stress. This behaviour
yields a tightly regulated gating system, whereby at high tensions channels gate
individually, and at lower tensions the channels spontaneously aggregate and inactivate.
We implement this positive feedback into the model for cell volume regulation,
and find that the channel clustering protects the cell against excessive loss
of cytoplasmic content.
acknowledgement: We thank Samantha Miller, Bert Poolman, and the members of Šarić
and Pilizota laboratories for useful discussion. We acknowledge support from the
Engineering and Physical Sciences Research Council (A.P. and A.Š.), the UCL Institute
for the Physics of Living Systems (A.P. and A.Š.), Darwin Trust of University of
Edinburgh (H.S.), Industrial Biotechnology Innovation Centre (H.S. and T.P.), BBSRC
Council Crossing Biological Membrane Network (H.S. and T.P.), BBSRC/EPSRC/MRC Synthetic
Biology Research Centre (T.P.), and the Royal Society (A.Š.).
article_number: '048102'
article_processing_charge: No
article_type: original
author:
- first_name: Alexandru
full_name: Paraschiv, Alexandru
last_name: Paraschiv
- first_name: Smitha
full_name: Hegde, Smitha
last_name: Hegde
- first_name: Raman
full_name: Ganti, Raman
last_name: Ganti
- first_name: Teuta
full_name: Pilizota, Teuta
last_name: Pilizota
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
citation:
ama: Paraschiv A, Hegde S, Ganti R, Pilizota T, Šarić A. Dynamic clustering regulates
activity of mechanosensitive membrane channels. Physical Review Letters.
2020;124(4). doi:10.1103/physrevlett.124.048102
apa: Paraschiv, A., Hegde, S., Ganti, R., Pilizota, T., & Šarić, A. (2020).
Dynamic clustering regulates activity of mechanosensitive membrane channels. Physical
Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.124.048102
chicago: Paraschiv, Alexandru, Smitha Hegde, Raman Ganti, Teuta Pilizota, and Anđela
Šarić. “Dynamic Clustering Regulates Activity of Mechanosensitive Membrane Channels.”
Physical Review Letters. American Physical Society, 2020. https://doi.org/10.1103/physrevlett.124.048102.
ieee: A. Paraschiv, S. Hegde, R. Ganti, T. Pilizota, and A. Šarić, “Dynamic clustering
regulates activity of mechanosensitive membrane channels,” Physical Review
Letters, vol. 124, no. 4. American Physical Society, 2020.
ista: Paraschiv A, Hegde S, Ganti R, Pilizota T, Šarić A. 2020. Dynamic clustering
regulates activity of mechanosensitive membrane channels. Physical Review Letters.
124(4), 048102.
mla: Paraschiv, Alexandru, et al. “Dynamic Clustering Regulates Activity of Mechanosensitive
Membrane Channels.” Physical Review Letters, vol. 124, no. 4, 048102, American
Physical Society, 2020, doi:10.1103/physrevlett.124.048102.
short: A. Paraschiv, S. Hegde, R. Ganti, T. Pilizota, A. Šarić, Physical Review
Letters 124 (2020).
date_created: 2021-11-26T09:57:01Z
date_published: 2020-01-31T00:00:00Z
date_updated: 2021-11-26T11:21:12Z
day: '31'
doi: 10.1103/physrevlett.124.048102
extern: '1'
external_id:
pmid:
- '32058787'
intvolume: ' 124'
issue: '4'
keyword:
- general physics and astronomy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/553248
month: '01'
oa: 1
oa_version: Preprint
pmid: 1
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Dynamic clustering regulates activity of mechanosensitive membrane channels
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 124
year: '2020'
...
---
_id: '10557'
abstract:
- lang: eng
text: Data storage and retrieval systems, methods, and computer-readable media utilize
a cryptographically verifiable data structure that facilitates verification of
a transaction in a decentralized peer-to-peer environment using multi-hop backwards
and forwards links. Backward links are cryptographic hashes of past records. Forward
links are cryptographic signatures of future records that are added retroactively
to records once the target block has been appended to the data structure.
applicant:
- Ecole Polytechnique Federale de Lausanne
application_date: 2017-06-09
article_processing_charge: No
author:
- first_name: Bryan
full_name: Ford, Bryan
last_name: Ford
- first_name: Linus
full_name: Gasse, Linus
last_name: Gasse
- first_name: Eleftherios
full_name: Kokoris Kogias, Eleftherios
id: f5983044-d7ef-11ea-ac6d-fd1430a26d30
last_name: Kokoris Kogias
- first_name: Philipp
full_name: Jovanovic, Philipp
last_name: Jovanovic
citation:
ama: Ford B, Gasse L, Kokoris Kogias E, Jovanovic P. Cryptographically verifiable
data structure having multi-hop forward and backwards links and associated systems
and methods. 2020.
apa: Ford, B., Gasse, L., Kokoris Kogias, E., & Jovanovic, P. (2020). Cryptographically
verifiable data structure having multi-hop forward and backwards links and associated
systems and methods.
chicago: Ford, Bryan, Linus Gasse, Eleftherios Kokoris Kogias, and Philipp Jovanovic.
“Cryptographically Verifiable Data Structure Having Multi-Hop Forward and Backwards
Links and Associated Systems and Methods,” 2020.
ieee: B. Ford, L. Gasse, E. Kokoris Kogias, and P. Jovanovic, “Cryptographically
verifiable data structure having multi-hop forward and backwards links and associated
systems and methods.” 2020.
ista: Ford B, Gasse L, Kokoris Kogias E, Jovanovic P. 2020. Cryptographically verifiable
data structure having multi-hop forward and backwards links and associated systems
and methods.
mla: Ford, Bryan, et al. Cryptographically Verifiable Data Structure Having Multi-Hop
Forward and Backwards Links and Associated Systems and Methods. 2020.
short: B. Ford, L. Gasse, E. Kokoris Kogias, P. Jovanovic, (2020).
date_created: 2021-12-16T13:28:59Z
date_published: 2020-03-03T00:00:00Z
date_updated: 2021-12-21T10:04:50Z
day: '03'
department:
- _id: ElKo
extern: '1'
ipc: ' H04L9/3247 ; G06Q20/29 ; G06Q20/382 ; H04L9/3236'
ipn: '10581613'
main_file_link:
- open_access: '1'
url: https://patents.google.com/patent/US10581613B2/en
month: '03'
oa: 1
oa_version: Published Version
publication_date: 2020-03-03
related_material:
link:
- relation: earlier_version
url: https://patents.google.com/patent/US20180359096A1/en
status: public
title: Cryptographically verifiable data structure having multi-hop forward and backwards
links and associated systems and methods
type: patent
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2020'
...
---
_id: '10618'
abstract:
- lang: eng
text: Magnetism typically arises from the joint effect of Fermi statistics and repulsive
Coulomb interactions, which favours ground states with non-zero electron spin.
As a result, controlling spin magnetism with electric fields—a longstanding technological
goal in spintronics and multiferroics1,2—can be achieved only indirectly. Here
we experimentally demonstrate direct electric-field control of magnetic states
in an orbital Chern insulator3,4,5,6, a magnetic system in which non-trivial band
topology favours long-range order of orbital angular momentum but the spins are
thought to remain disordered7,8,9,10,11,12,13,14. We use van der Waals heterostructures
consisting of a graphene monolayer rotationally faulted with respect to a Bernal-stacked
bilayer to realize narrow and topologically non-trivial valley-projected moiré
minibands15,16,17. At fillings of one and three electrons per moiré unit cell
within these bands, we observe quantized anomalous Hall effects18 with transverse
resistance approximately equal to h/2e2 (where h is Planck’s constant and e is
the charge on the electron), which is indicative of spontaneous polarization of
the system into a single-valley-projected band with a Chern number equal to two.
At a filling of three electrons per moiré unit cell, we find that the sign of
the quantum anomalous Hall effect can be reversed via field-effect control of
the chemical potential; moreover, this transition is hysteretic, which we use
to demonstrate non-volatile electric-field-induced reversal of the magnetic state.
A theoretical analysis19 indicates that the effect arises from the topological
edge states, which drive a change in sign of the magnetization and thus a reversal
in the favoured magnetic state. Voltage control of magnetic states can be used
to electrically pattern non-volatile magnetic-domain structures hosting chiral
edge states, with applications ranging from reconfigurable microwave circuit elements
to ultralow-power magnetic memories.
acknowledgement: We acknowledge discussions with J. Checkelsky, S. Chen, C. Dean,
M. Yankowitz, D. Reilly, I. Sodemann and M. Zaletel. Work at UCSB was primarily
supported by the ARO under MURI W911NF-16-1-0361. Measurements of twisted bilayer
graphene (Extended Data Fig. 8) and measurements at elevated temperatures (Extended
Data Fig. 3) were supported by a SEED grant and made use of shared facilities of
the UCSB MRSEC (NSF DMR 1720256), a member of the Materials Research Facilities
Network (www.mrfn.org). A.F.Y. acknowledges the support of the David and Lucille
Packard Foundation under award 2016-65145. A.H.M. and J.Z. were supported by the
National Science Foundation through the Center for Dynamics and Control of Materials,
an NSF MRSEC under Cooperative Agreement number DMR-1720595, and by the Welch Foundation
under grant TBF1473. C.L.T. acknowledges support from the Hertz Foundation and from
the National Science Foundation Graduate Research Fellowship Program under grant
1650114. K.W. and T.T. acknowledge support from the Elemental Strategy Initiative
conducted by the MEXT, Japan, Grant Number JPMXP0112101001, JSPS KAKENHI grant numbers
JP20H00354 and the CREST(JPMJCR15F3), JST.
article_processing_charge: No
article_type: original
author:
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: J.
full_name: Zhu, J.
last_name: Zhu
- first_name: M. A.
full_name: Kumar, M. A.
last_name: Kumar
- first_name: Y.
full_name: Zhang, Y.
last_name: Zhang
- first_name: F.
full_name: Yang, F.
last_name: Yang
- first_name: C. L.
full_name: Tschirhart, C. L.
last_name: Tschirhart
- first_name: M.
full_name: Serlin, M.
last_name: Serlin
- first_name: K.
full_name: Watanabe, K.
last_name: Watanabe
- first_name: T.
full_name: Taniguchi, T.
last_name: Taniguchi
- first_name: A. H.
full_name: MacDonald, A. H.
last_name: MacDonald
- first_name: A. F.
full_name: Young, A. F.
last_name: Young
citation:
ama: Polshyn H, Zhu J, Kumar MA, et al. Electrical switching of magnetic order in
an orbital Chern insulator. Nature. 2020;588(7836):66-70. doi:10.1038/s41586-020-2963-8
apa: Polshyn, H., Zhu, J., Kumar, M. A., Zhang, Y., Yang, F., Tschirhart, C. L.,
… Young, A. F. (2020). Electrical switching of magnetic order in an orbital Chern
insulator. Nature. Springer Nature. https://doi.org/10.1038/s41586-020-2963-8
chicago: Polshyn, Hryhoriy, J. Zhu, M. A. Kumar, Y. Zhang, F. Yang, C. L. Tschirhart,
M. Serlin, et al. “Electrical Switching of Magnetic Order in an Orbital Chern
Insulator.” Nature. Springer Nature, 2020. https://doi.org/10.1038/s41586-020-2963-8.
ieee: H. Polshyn et al., “Electrical switching of magnetic order in an orbital
Chern insulator,” Nature, vol. 588, no. 7836. Springer Nature, pp. 66–70,
2020.
ista: Polshyn H, Zhu J, Kumar MA, Zhang Y, Yang F, Tschirhart CL, Serlin M, Watanabe
K, Taniguchi T, MacDonald AH, Young AF. 2020. Electrical switching of magnetic
order in an orbital Chern insulator. Nature. 588(7836), 66–70.
mla: Polshyn, Hryhoriy, et al. “Electrical Switching of Magnetic Order in an Orbital
Chern Insulator.” Nature, vol. 588, no. 7836, Springer Nature, 2020, pp.
66–70, doi:10.1038/s41586-020-2963-8.
short: H. Polshyn, J. Zhu, M.A. Kumar, Y. Zhang, F. Yang, C.L. Tschirhart, M. Serlin,
K. Watanabe, T. Taniguchi, A.H. MacDonald, A.F. Young, Nature 588 (2020) 66–70.
date_created: 2022-01-13T14:12:17Z
date_published: 2020-11-23T00:00:00Z
date_updated: 2022-01-13T14:21:04Z
day: '23'
doi: 10.1038/s41586-020-2963-8
extern: '1'
external_id:
arxiv:
- '2004.11353'
pmid:
- '33230333'
intvolume: ' 588'
issue: '7836'
keyword:
- multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2004.11353
month: '11'
oa: 1
oa_version: Preprint
page: 66-70
pmid: 1
publication: Nature
publication_identifier:
eissn:
- 1476-4687
issn:
- 0028-0836
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Electrical switching of magnetic order in an orbital Chern insulator
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 588
year: '2020'
...
---
_id: '10650'
abstract:
- lang: eng
text: The understanding of material systems with strong electron-electron interactions
is the central problem in modern condensed matter physics. Despite this, the essential
physics of many of these materials is still not understood and we have no overall
perspective on their properties. Moreover, we have very little ability to make
predictions in this class of systems. In this manuscript we share our personal
views of what the major open problems are in correlated electron systems and we
discuss some possible routes to make progress in this rich and fascinating field.
This manuscript is the result of the vigorous discussions and deliberations that
took place at Johns Hopkins University during a three-day workshop January 27,
28, and 29, 2020 that brought together six senior scientists and 46 more junior
scientists. Our hope, is that the topics we have presented will provide inspiration
for others working in this field and motivation for the idea that significant
progress can be made on very hard problems if we focus our collective energies.
acknowledgement: "We thank NSF CMP program for suggestions regarding the topic and
general structure of the workshop. This project was supported by the NSF DMR-2002329
and The Gordon and Betty Moore Foundation (GBMF) EPiQS initiative. We would like
to sincerely thank A. Kapitulnik, A. J. Leggett, M.B. Maple, T.M. McQueen, M. Norman,
P. S. Riseborough, and G. A. Sawatzky for their lectures at the workshop and advice
on the writing of this manuscript. We would also like to thank G. Blumberg, C. Broholm,
S. Crooker, N. Drichko, and A. Patel for helpful consultation on topics discussed\r\nherein.
A number of individuals also had independent support: (AA, EH; GBMF-4305), (IMH;
GBMF-9071), (HJC; NHMFL is supported by the NSF DMR-1644779 and the state of Florida),
(YH, AZ; Miller Institute for Basic Research in Science), (YC; US DOE-BES DEAC02-06CH11357),
(AS; Spallation Neutron Source, a DOE Office of Science User Facility operated by
ORNL), (SAAG; ARO-W911NF-18-1-0290, NSF DMR-1455233), (YW; DOE-BES DE-SC0019331,
GBMF-4532)."
article_processing_charge: No
author:
- first_name: A
full_name: Alexandradinata, A
last_name: Alexandradinata
- first_name: N.P.
full_name: Armitage, N.P.
last_name: Armitage
- first_name: Andrey
full_name: Baydin, Andrey
last_name: Baydin
- first_name: Wenli
full_name: Bi, Wenli
last_name: Bi
- first_name: Yue
full_name: Cao, Yue
last_name: Cao
- first_name: Hitesh J.
full_name: Changlani, Hitesh J.
last_name: Changlani
- first_name: Eli
full_name: Chertkov, Eli
last_name: Chertkov
- first_name: Eduardo H.
full_name: da Silva Neto, Eduardo H.
last_name: da Silva Neto
- first_name: Luca
full_name: Delacretaz, Luca
last_name: Delacretaz
- first_name: Ismail
full_name: El Baggari, Ismail
last_name: El Baggari
- first_name: G.M.
full_name: Ferguson, G.M.
last_name: Ferguson
- first_name: William J.
full_name: Gannon, William J.
last_name: Gannon
- first_name: Sayed Ali Akbar
full_name: Ghorashi, Sayed Ali Akbar
last_name: Ghorashi
- first_name: Berit H.
full_name: Goodge, Berit H.
last_name: Goodge
- first_name: Olga
full_name: Goulko, Olga
last_name: Goulko
- first_name: G.
full_name: Grissonnache, G.
last_name: Grissonnache
- first_name: Alannah
full_name: Hallas, Alannah
last_name: Hallas
- first_name: Ian M.
full_name: Hayes, Ian M.
last_name: Hayes
- first_name: Yu
full_name: He, Yu
last_name: He
- first_name: Edwin W.
full_name: Huang, Edwin W.
last_name: Huang
- first_name: Anshu
full_name: Kogar, Anshu
last_name: Kogar
- first_name: Divine
full_name: Kumah, Divine
last_name: Kumah
- first_name: Jong Yeon
full_name: Lee, Jong Yeon
last_name: Lee
- first_name: A.
full_name: Legros, A.
last_name: Legros
- first_name: Fahad
full_name: Mahmood, Fahad
last_name: Mahmood
- first_name: Yulia
full_name: Maximenko, Yulia
last_name: Maximenko
- first_name: Nick
full_name: Pellatz, Nick
last_name: Pellatz
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Tarapada
full_name: Sarkar, Tarapada
last_name: Sarkar
- first_name: Allen
full_name: Scheie, Allen
last_name: Scheie
- first_name: Kyle L.
full_name: Seyler, Kyle L.
last_name: Seyler
- first_name: Zhenzhong
full_name: Shi, Zhenzhong
last_name: Shi
- first_name: Brian
full_name: Skinner, Brian
last_name: Skinner
- first_name: Lucia
full_name: Steinke, Lucia
last_name: Steinke
- first_name: K.
full_name: Thirunavukkuarasu, K.
last_name: Thirunavukkuarasu
- first_name: Thaís Victa
full_name: Trevisan, Thaís Victa
last_name: Trevisan
- first_name: Michael
full_name: Vogl, Michael
last_name: Vogl
- first_name: Pavel A.
full_name: Volkov, Pavel A.
last_name: Volkov
- first_name: Yao
full_name: Wang, Yao
last_name: Wang
- first_name: Yishu
full_name: Wang, Yishu
last_name: Wang
- first_name: Di
full_name: Wei, Di
last_name: Wei
- first_name: Kaya
full_name: Wei, Kaya
last_name: Wei
- first_name: Shuolong
full_name: Yang, Shuolong
last_name: Yang
- first_name: Xian
full_name: Zhang, Xian
last_name: Zhang
- first_name: Ya-Hui
full_name: Zhang, Ya-Hui
last_name: Zhang
- first_name: Liuyan
full_name: Zhao, Liuyan
last_name: Zhao
- first_name: Alfred
full_name: Zong, Alfred
last_name: Zong
citation:
ama: Alexandradinata A, Armitage NP, Baydin A, et al. The future of the correlated
electron problem. arXiv.
apa: Alexandradinata, A., Armitage, N. P., Baydin, A., Bi, W., Cao, Y., Changlani,
H. J., … Zong, A. (n.d.). The future of the correlated electron problem. arXiv.
chicago: Alexandradinata, A, N.P. Armitage, Andrey Baydin, Wenli Bi, Yue Cao, Hitesh
J. Changlani, Eli Chertkov, et al. “The Future of the Correlated Electron Problem.”
ArXiv, n.d.
ieee: A. Alexandradinata et al., “The future of the correlated electron problem,”
arXiv. .
ista: Alexandradinata A, Armitage NP, Baydin A, Bi W, Cao Y, Changlani HJ, Chertkov
E, da Silva Neto EH, Delacretaz L, El Baggari I, Ferguson GM, Gannon WJ, Ghorashi
SAA, Goodge BH, Goulko O, Grissonnache G, Hallas A, Hayes IM, He Y, Huang EW,
Kogar A, Kumah D, Lee JY, Legros A, Mahmood F, Maximenko Y, Pellatz N, Polshyn
H, Sarkar T, Scheie A, Seyler KL, Shi Z, Skinner B, Steinke L, Thirunavukkuarasu
K, Trevisan TV, Vogl M, Volkov PA, Wang Y, Wang Y, Wei D, Wei K, Yang S, Zhang
X, Zhang Y-H, Zhao L, Zong A. The future of the correlated electron problem. arXiv,
.
mla: Alexandradinata, A., et al. “The Future of the Correlated Electron Problem.”
ArXiv.
short: A. Alexandradinata, N.P. Armitage, A. Baydin, W. Bi, Y. Cao, H.J. Changlani,
E. Chertkov, E.H. da Silva Neto, L. Delacretaz, I. El Baggari, G.M. Ferguson,
W.J. Gannon, S.A.A. Ghorashi, B.H. Goodge, O. Goulko, G. Grissonnache, A. Hallas,
I.M. Hayes, Y. He, E.W. Huang, A. Kogar, D. Kumah, J.Y. Lee, A. Legros, F. Mahmood,
Y. Maximenko, N. Pellatz, H. Polshyn, T. Sarkar, A. Scheie, K.L. Seyler, Z. Shi,
B. Skinner, L. Steinke, K. Thirunavukkuarasu, T.V. Trevisan, M. Vogl, P.A. Volkov,
Y. Wang, Y. Wang, D. Wei, K. Wei, S. Yang, X. Zhang, Y.-H. Zhang, L. Zhao, A.
Zong, ArXiv (n.d.).
date_created: 2022-01-20T10:55:36Z
date_published: 2020-10-01T00:00:00Z
date_updated: 2022-01-24T08:05:51Z
day: '01'
extern: '1'
external_id:
arxiv:
- '2010.00584'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2010.00584
month: '10'
oa: 1
oa_version: Preprint
page: '55'
publication: arXiv
publication_status: submitted
status: public
title: The future of the correlated electron problem
type: preprint
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2020'
...
---
_id: '10673'
abstract:
- lang: eng
text: We propose a neural information processing system obtained by re-purposing
the function of a biological neural circuit model to govern simulated and real-world
control tasks. Inspired by the structure of the nervous system of the soil-worm,
C. elegans, we introduce ordinary neural circuits (ONCs), defined as the model
of biological neural circuits reparameterized for the control of alternative tasks.
We first demonstrate that ONCs realize networks with higher maximum flow compared
to arbitrary wired networks. We then learn instances of ONCs to control a series
of robotic tasks, including the autonomous parking of a real-world rover robot.
For reconfiguration of the purpose of the neural circuit, we adopt a search-based
optimization algorithm. Ordinary neural circuits perform on par and, in some cases,
significantly surpass the performance of contemporary deep learning models. ONC
networks are compact, 77% sparser than their counterpart neural controllers, and
their neural dynamics are fully interpretable at the cell-level.
acknowledgement: "RH and RG are partially supported by Horizon-2020 ECSEL Project
grant No. 783163 (iDev40), Productive 4.0, and ATBMBFW CPS-IoT Ecosystem. ML was
supported in part by the Austrian Science Fund (FWF) under grant Z211-N23\r\n(Wittgenstein
Award). AA is supported by the National Science Foundation (NSF) Graduate Research
Fellowship\r\nProgram. RH and DR are partially supported by The Boeing Company and
JP Morgan Chase. This research work is\r\npartially drawn from the PhD dissertation
of RH.\r\n"
alternative_title:
- PMLR
article_processing_charge: No
author:
- first_name: Ramin
full_name: Hasani, Ramin
last_name: Hasani
- first_name: Mathias
full_name: Lechner, Mathias
id: 3DC22916-F248-11E8-B48F-1D18A9856A87
last_name: Lechner
- first_name: Alexander
full_name: Amini, Alexander
last_name: Amini
- first_name: Daniela
full_name: Rus, Daniela
last_name: Rus
- first_name: Radu
full_name: Grosu, Radu
last_name: Grosu
citation:
ama: 'Hasani R, Lechner M, Amini A, Rus D, Grosu R. A natural lottery ticket winner:
Reinforcement learning with ordinary neural circuits. In: Proceedings of the
37th International Conference on Machine Learning. PMLR. ; 2020:4082-4093.'
apa: 'Hasani, R., Lechner, M., Amini, A., Rus, D., & Grosu, R. (2020). A natural
lottery ticket winner: Reinforcement learning with ordinary neural circuits. In
Proceedings of the 37th International Conference on Machine Learning (pp.
4082–4093). Virtual.'
chicago: 'Hasani, Ramin, Mathias Lechner, Alexander Amini, Daniela Rus, and Radu
Grosu. “A Natural Lottery Ticket Winner: Reinforcement Learning with Ordinary
Neural Circuits.” In Proceedings of the 37th International Conference on Machine
Learning, 4082–93. PMLR, 2020.'
ieee: 'R. Hasani, M. Lechner, A. Amini, D. Rus, and R. Grosu, “A natural lottery
ticket winner: Reinforcement learning with ordinary neural circuits,” in Proceedings
of the 37th International Conference on Machine Learning, Virtual, 2020, pp.
4082–4093.'
ista: 'Hasani R, Lechner M, Amini A, Rus D, Grosu R. 2020. A natural lottery ticket
winner: Reinforcement learning with ordinary neural circuits. Proceedings of the
37th International Conference on Machine Learning. ML: Machine LearningPMLR, PMLR,
, 4082–4093.'
mla: 'Hasani, Ramin, et al. “A Natural Lottery Ticket Winner: Reinforcement Learning
with Ordinary Neural Circuits.” Proceedings of the 37th International Conference
on Machine Learning, 2020, pp. 4082–93.'
short: R. Hasani, M. Lechner, A. Amini, D. Rus, R. Grosu, in:, Proceedings of the
37th International Conference on Machine Learning, 2020, pp. 4082–4093.
conference:
end_date: 2020-07-18
location: Virtual
name: 'ML: Machine Learning'
start_date: 2020-07-12
date_created: 2022-01-25T15:50:34Z
date_published: 2020-01-01T00:00:00Z
date_updated: 2022-01-26T11:14:27Z
ddc:
- '000'
department:
- _id: GradSch
- _id: ToHe
file:
- access_level: open_access
checksum: c9a4a29161777fc1a89ef451c040e3b1
content_type: application/pdf
creator: cchlebak
date_created: 2022-01-26T11:08:51Z
date_updated: 2022-01-26T11:08:51Z
file_id: '10691'
file_name: 2020_PMLR_Hasani.pdf
file_size: 2329798
relation: main_file
success: 1
file_date_updated: 2022-01-26T11:08:51Z
has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/3.0/
main_file_link:
- open_access: '1'
url: http://proceedings.mlr.press/v119/hasani20a.html
oa: 1
oa_version: Published Version
page: 4082-4093
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: Z211
name: The Wittgenstein Prize
publication: Proceedings of the 37th International Conference on Machine Learning
publication_identifier:
issn:
- 2640-3498
publication_status: published
quality_controlled: '1'
scopus_import: '1'
series_title: PMLR
status: public
title: 'A natural lottery ticket winner: Reinforcement learning with ordinary neural
circuits'
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/3.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND
3.0)
short: CC BY-NC-ND (3.0)
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2020'
...
---
_id: '10693'
abstract:
- lang: eng
text: High quality graphene heterostructures host an array of fractional quantum
Hall isospin ferromagnets with diverse spin and valley orders. While a variety
of phase transitions have been observed, disentangling the isospin phase diagram
of these states is hampered by the absence of direct probes of spin and valley
order. I will describe nonlocal transport measurements based on launching spin
waves from a gate defined lateral heterojunction, performed in ultra-clean Corbino
geometry graphene devices. At high magnetic fields, we find that the spin-wave
transport signal is detected in all FQH states between ν = 0 and 1; however, between
ν = 1 and 2 only odd numerator FQH states show finite nonlocal transport, despite
the identical ground state spin polarizations in odd- and even numerator states.
The results reveal that the neutral spin-waves are both spin and sublattice polarized
making them a sensitive probe of ground state sublattice structure. Armed with
this understanding, we use nonlocal transport signal to a magnetic field tuned
isospin phase transition, showing that the emergent even denominator state at
ν = 1/2 in monolayer graphene is indeed a multicomponent state featuring equal
populations on each sublattice.
alternative_title:
- Bulletin of the American Physical Society
article_number: B54. 00007
article_processing_charge: No
author:
- first_name: Haoxin
full_name: Zhou, Haoxin
last_name: Zhou
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Takashi
full_name: Tanaguchi, Takashi
last_name: Tanaguchi
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
citation:
ama: 'Zhou H, Polshyn H, Tanaguchi T, Watanabe K, Young A. Sublattice resolved spin
wave transport through graphene fractional quantum Hall states as a probe of isospin
order. In: APS March Meeting 2020. Vol 65. American Physical Society; 2020.'
apa: 'Zhou, H., Polshyn, H., Tanaguchi, T., Watanabe, K., & Young, A. (2020).
Sublattice resolved spin wave transport through graphene fractional quantum Hall
states as a probe of isospin order. In APS March Meeting 2020 (Vol. 65).
Denver, CO, United States: American Physical Society.'
chicago: Zhou, Haoxin, Hryhoriy Polshyn, Takashi Tanaguchi, Kenji Watanabe, and
Andrea Young. “Sublattice Resolved Spin Wave Transport through Graphene Fractional
Quantum Hall States as a Probe of Isospin Order.” In APS March Meeting 2020,
Vol. 65. American Physical Society, 2020.
ieee: H. Zhou, H. Polshyn, T. Tanaguchi, K. Watanabe, and A. Young, “Sublattice
resolved spin wave transport through graphene fractional quantum Hall states as
a probe of isospin order,” in APS March Meeting 2020, Denver, CO, United
States, 2020, vol. 65, no. 1.
ista: 'Zhou H, Polshyn H, Tanaguchi T, Watanabe K, Young A. 2020. Sublattice resolved
spin wave transport through graphene fractional quantum Hall states as a probe
of isospin order. APS March Meeting 2020. APS: American Physical Society, Bulletin
of the American Physical Society, vol. 65, B54. 00007.'
mla: Zhou, Haoxin, et al. “Sublattice Resolved Spin Wave Transport through Graphene
Fractional Quantum Hall States as a Probe of Isospin Order.” APS March Meeting
2020, vol. 65, no. 1, B54. 00007, American Physical Society, 2020.
short: H. Zhou, H. Polshyn, T. Tanaguchi, K. Watanabe, A. Young, in:, APS March
Meeting 2020, American Physical Society, 2020.
conference:
end_date: 2020-03-06
location: Denver, CO, United States
name: 'APS: American Physical Society'
start_date: 2020-03-02
date_created: 2022-01-27T10:50:10Z
date_published: 2020-03-01T00:00:00Z
date_updated: 2022-01-27T10:58:38Z
day: '01'
extern: '1'
intvolume: ' 65'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://meetings.aps.org/Meeting/MAR20/Session/B54.7
month: '03'
oa: 1
oa_version: Published Version
publication: APS March Meeting 2020
publication_identifier:
issn:
- 0003-0503
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Sublattice resolved spin wave transport through graphene fractional quantum
Hall states as a probe of isospin order
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 65
year: '2020'
...
---
_id: '10698'
abstract:
- lang: eng
text: This is the second of three talks describing the observation and characterization
of a ferromagnetic moiré heterostructure based on twisted bilayer graphene aligned
to hexagonal boron nitride. I will compare the qualitative and quantitative features
of this observed quantum anomalous Hall state to traditional systems engineered
from thin film (Bi,Sb)2Te3 topological insulators. In particular, we find that
the measured electronic energy gap of ~30K is several times higher than the Curie
temperature, consistent with a lack of disorder associated with magnetic dopants.
In this system, the quantization arises from spontaneous ferromagnetic polarization
into a single spin and valley moiré subband, which is topological despite the
lack of spin orbit coupling. I will also discuss the observation of current induced
switching, which allows the magnetic state of the heterostructure to be controllably
reversed with currents as small as a few nanoamperes.
acknowledgement: I would like to thank the MURI Program, AFOSR, Sloan Foundation,
and the ARO for their generous support of this work.
alternative_title:
- Bulletin of the American Physical Society
article_number: B59.00011
article_processing_charge: No
author:
- first_name: Marec
full_name: Serlin, Marec
last_name: Serlin
- first_name: Charles
full_name: Tschirhart, Charles
last_name: Tschirhart
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Yuxuan
full_name: Zhang, Yuxuan
last_name: Zhang
- first_name: Jiacheng
full_name: Zhu, Jiacheng
last_name: Zhu
- first_name: Martin E.
full_name: Huber, Martin E.
last_name: Huber
- first_name: Leon
full_name: Balents, Leon
last_name: Balents
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Takashi
full_name: Tanaguchi, Takashi
last_name: Tanaguchi
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
citation:
ama: 'Serlin M, Tschirhart C, Polshyn H, et al. Intrinsic quantized anomalous Hall
effect in a moiré heterostructure, part II: Temperature dependence and current
switching. In: APS March Meeting 2020. Vol 65. American Physical Society;
2020.'
apa: 'Serlin, M., Tschirhart, C., Polshyn, H., Zhang, Y., Zhu, J., Huber, M. E.,
… Young, A. (2020). Intrinsic quantized anomalous Hall effect in a moiré heterostructure,
part II: Temperature dependence and current switching. In APS March Meeting
2020 (Vol. 65). Denver, CO, United States: American Physical Society.'
chicago: 'Serlin, Marec, Charles Tschirhart, Hryhoriy Polshyn, Yuxuan Zhang, Jiacheng
Zhu, Martin E. Huber, Leon Balents, Kenji Watanabe, Takashi Tanaguchi, and Andrea
Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure,
Part II: Temperature Dependence and Current Switching.” In APS March Meeting
2020, Vol. 65. American Physical Society, 2020.'
ieee: 'M. Serlin et al., “Intrinsic quantized anomalous Hall effect in a
moiré heterostructure, part II: Temperature dependence and current switching,”
in APS March Meeting 2020, Denver, CO, United States, 2020, vol. 65, no.
1.'
ista: 'Serlin M, Tschirhart C, Polshyn H, Zhang Y, Zhu J, Huber ME, Balents L, Watanabe
K, Tanaguchi T, Young A. 2020. Intrinsic quantized anomalous Hall effect in a
moiré heterostructure, part II: Temperature dependence and current switching.
APS March Meeting 2020. APS: American Physical Society, Bulletin of the American
Physical Society, vol. 65, B59.00011.'
mla: 'Serlin, Marec, et al. “Intrinsic Quantized Anomalous Hall Effect in a Moiré
Heterostructure, Part II: Temperature Dependence and Current Switching.” APS
March Meeting 2020, vol. 65, no. 1, B59.00011, American Physical Society,
2020.'
short: M. Serlin, C. Tschirhart, H. Polshyn, Y. Zhang, J. Zhu, M.E. Huber, L. Balents,
K. Watanabe, T. Tanaguchi, A. Young, in:, APS March Meeting 2020, American Physical
Society, 2020.
conference:
end_date: 2020-03-06
location: Denver, CO, United States
name: 'APS: American Physical Society'
start_date: 2020-03-02
date_created: 2022-01-28T10:46:57Z
date_published: 2020-03-01T00:00:00Z
date_updated: 2023-02-21T15:57:52Z
day: '01'
extern: '1'
external_id:
arxiv:
- '1907.00261'
intvolume: ' 65'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://meetings.aps.org/Meeting/MAR20/Session/B59.11
month: '03'
oa: 1
oa_version: Published Version
publication: APS March Meeting 2020
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '10619'
relation: other
status: public
status: public
title: 'Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part
II: Temperature dependence and current switching'
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 65
year: '2020'
...
---
_id: '10699'
abstract:
- lang: eng
text: This is the third of three talks describing the observation and characterization
of a ferromagnetic moiré heterostructure based on twisted bilayer graphene aligned
to hexagonal boron nitride. In this segment I will present scanning probe magnetometry
data acquired using a nanoSQUID-on-tip microscope, which provides ~150 nm spatial
resolution and a field sensitivity of ~10 nT/rtHz. We study the distribution of
magnetic domains within the device as a function of density, magnetic field training,
and DC current. Our data allow us to constrain the magnitude of the orbital magnetic
moment of the electrons in the QAH state. Comparison with simultaneously acquired
transport data allows us to precisely correlate single domain dynamics with discrete
jumps in the observed anomalous Hall signal.
acknowledgement: I would like to thank the MURI program, Sloan foundation, AFOSR,
and ARO for their generous support of this work. I would also like to thank the
NSF GRFP and the Hertz foundation for their generous support of my graduate studies.
alternative_title:
- Bulletin of the American Physical Society
article_number: B59.00013
article_processing_charge: No
author:
- first_name: Charles
full_name: Tschirhart, Charles
last_name: Tschirhart
- first_name: Marec
full_name: Serlin, Marec
last_name: Serlin
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Yuxuan
full_name: Zhang, Yuxuan
last_name: Zhang
- first_name: Jiacheng
full_name: Zhu, Jiacheng
last_name: Zhu
- first_name: Leon
full_name: Balents, Leon
last_name: Balents
- first_name: Martin E.
full_name: Huber, Martin E.
last_name: Huber
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Takashi
full_name: Tanaguchi, Takashi
last_name: Tanaguchi
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
citation:
ama: 'Tschirhart C, Serlin M, Polshyn H, et al. Intrinsic quantized anomalous Hall
effect in a moiré heterostructure, part III: Scanning probe magnetometry. In:
APS March Meeting 2020. Vol 65. American Physical Society; 2020.'
apa: 'Tschirhart, C., Serlin, M., Polshyn, H., Zhang, Y., Zhu, J., Balents, L.,
… Young, A. (2020). Intrinsic quantized anomalous Hall effect in a moiré heterostructure,
part III: Scanning probe magnetometry. In APS March Meeting 2020 (Vol.
65). Denver, CO, United States: American Physical Society.'
chicago: 'Tschirhart, Charles, Marec Serlin, Hryhoriy Polshyn, Yuxuan Zhang, Jiacheng
Zhu, Leon Balents, Martin E. Huber, Kenji Watanabe, Takashi Tanaguchi, and Andrea
Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure,
Part III: Scanning Probe Magnetometry.” In APS March Meeting 2020, Vol.
65. American Physical Society, 2020.'
ieee: 'C. Tschirhart et al., “Intrinsic quantized anomalous Hall effect in
a moiré heterostructure, part III: Scanning probe magnetometry,” in APS March
Meeting 2020, Denver, CO, United States, 2020, vol. 65, no. 1.'
ista: 'Tschirhart C, Serlin M, Polshyn H, Zhang Y, Zhu J, Balents L, Huber ME, Watanabe
K, Tanaguchi T, Young A. 2020. Intrinsic quantized anomalous Hall effect in a
moiré heterostructure, part III: Scanning probe magnetometry. APS March Meeting
2020. APS: American Physical Society, Bulletin of the American Physical Society,
vol. 65, B59.00013.'
mla: 'Tschirhart, Charles, et al. “Intrinsic Quantized Anomalous Hall Effect in
a Moiré Heterostructure, Part III: Scanning Probe Magnetometry.” APS March
Meeting 2020, vol. 65, no. 1, B59.00013, American Physical Society, 2020.'
short: C. Tschirhart, M. Serlin, H. Polshyn, Y. Zhang, J. Zhu, L. Balents, M.E.
Huber, K. Watanabe, T. Tanaguchi, A. Young, in:, APS March Meeting 2020, American
Physical Society, 2020.
conference:
end_date: 2020-03-06
location: Denver, CO, United States
name: 'APS: American Physical Society'
start_date: 2020-03-02
date_created: 2022-01-28T10:57:49Z
date_published: 2020-03-01T00:00:00Z
date_updated: 2023-02-21T15:57:52Z
day: '01'
extern: '1'
external_id:
arxiv:
- '1907.00261'
intvolume: ' 65'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://meetings.aps.org/Meeting/MAR20/Session/B59.13
month: '03'
oa: 1
oa_version: Published Version
publication: APS March Meeting 2020
publication_identifier:
issn:
- 0003-0503
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '10619'
relation: other
status: public
status: public
title: 'Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part
III: Scanning probe magnetometry'
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 65
year: '2020'
...
---
_id: '10697'
abstract:
- lang: eng
text: We report the observation of a quantized anomalous Hall effect in a moiré
heterostructure consisting of twisted bilayer graphene aligned to an encapsulating
hBN substrate. The effect occurs at a density of 3 electrons per superlattice
unit cell, where we observe magnetic hysteresis and a Hall resistance quantized
to within 0.1% of the resistance quantum at temperatures as high as 3K. In this
first of 3 talks, I will describe the fabrication procedure for our device as
well as basic transport characterization measurements. I will introduce the phenomenology
of twisted bilayer graphene and present evidence for hBN alignment as manifested
in the hierarchy of symmetry-breaking gaps and anomalous magnetoresistance.
acknowledgement: I would like to thank the MURI program, Sloan foundation, AFOSR,
and ARO for their generous support of this work.
alternative_title:
- Bulletin of the American Physical Society
article_number: B59.00012
article_processing_charge: No
author:
- first_name: Yuxuan
full_name: Zhang, Yuxuan
last_name: Zhang
- first_name: Marec
full_name: Serlin, Marec
last_name: Serlin
- first_name: Charles
full_name: Tschirhart, Charles
last_name: Tschirhart
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Jiacheng
full_name: Zhu, Jiacheng
last_name: Zhu
- first_name: Leon
full_name: Balents, Leon
last_name: Balents
- first_name: Martin E.
full_name: Huber, Martin E.
last_name: Huber
- first_name: Takashi
full_name: Taniguchi, Takashi
last_name: Taniguchi
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
citation:
ama: 'Zhang Y, Serlin M, Tschirhart C, et al. Intrinsic quantized anomalous Hall
effect in a moiré heterostructure, part I: Device fabrication and transport. In:
APS March Meeting 2020. Vol 65. American Physical Society; 2020.'
apa: 'Zhang, Y., Serlin, M., Tschirhart, C., Polshyn, H., Zhu, J., Balents, L.,
… Young, A. (2020). Intrinsic quantized anomalous Hall effect in a moiré heterostructure,
part I: Device fabrication and transport. In APS March Meeting 2020 (Vol.
65). Denver, CO, United States: American Physical Society.'
chicago: 'Zhang, Yuxuan, Marec Serlin, Charles Tschirhart, Hryhoriy Polshyn, Jiacheng
Zhu, Leon Balents, Martin E. Huber, Takashi Taniguchi, Kenji Watanabe, and Andrea
Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure,
Part I: Device Fabrication and Transport.” In APS March Meeting 2020, Vol.
65. American Physical Society, 2020.'
ieee: 'Y. Zhang et al., “Intrinsic quantized anomalous Hall effect in a moiré
heterostructure, part I: Device fabrication and transport,” in APS March Meeting
2020, Denver, CO, United States, 2020, vol. 65, no. 1.'
ista: 'Zhang Y, Serlin M, Tschirhart C, Polshyn H, Zhu J, Balents L, Huber ME, Taniguchi
T, Watanabe K, Young A. 2020. Intrinsic quantized anomalous Hall effect in a moiré
heterostructure, part I: Device fabrication and transport. APS March Meeting 2020.
APS: American Physical Society, Bulletin of the American Physical Society, vol.
65, B59.00012.'
mla: 'Zhang, Yuxuan, et al. “Intrinsic Quantized Anomalous Hall Effect in a Moiré
Heterostructure, Part I: Device Fabrication and Transport.” APS March Meeting
2020, vol. 65, no. 1, B59.00012, American Physical Society, 2020.'
short: Y. Zhang, M. Serlin, C. Tschirhart, H. Polshyn, J. Zhu, L. Balents, M.E.
Huber, T. Taniguchi, K. Watanabe, A. Young, in:, APS March Meeting 2020, American
Physical Society, 2020.
conference:
end_date: 2020-03-06
location: Denver, CO, United States
name: 'APS: American Physical Society'
start_date: 2020-03-02
date_created: 2022-01-28T10:28:35Z
date_published: 2020-03-01T00:00:00Z
date_updated: 2023-02-21T15:57:52Z
day: '01'
extern: '1'
external_id:
arxiv:
- '1907.00261'
intvolume: ' 65'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://meetings.aps.org/Meeting/MAR20/Session/B59.12
month: '03'
oa: 1
oa_version: Published Version
publication: APS March Meeting 2020
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '10619'
relation: other
status: public
status: public
title: 'Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part
I: Device fabrication and transport'
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 65
year: '2020'
...
---
_id: '10696'
abstract:
- lang: eng
text: We experimentally investigate twisted van der Waals heterostructures of monolayer
graphene rotated with respect to a bernal stacked graphene bilayer. We report
transport measurements for devices with twist angles between 0.9 and 1.4°. The
electric field allows efficient tuning of the width, isolation and the topology
of the moiré bands in this system. By comparing magnetoresistance measurements
to numerical simulations, we develop an understanding of the band structure. Finally,
we observe correlated states at half- and quarter-fillings, which arise when narrow
moire sublattice band is isolated by energy gaps from dispersive bands. We investigate
the effects of in-plane and out-of-plane magnetic field on these states and discuss
the implication for their spin- and valley- polarization.
alternative_title:
- Bulletin of the American Physical Society
article_number: B51.00005
article_processing_charge: No
author:
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Jihang
full_name: Zhu, Jihang
last_name: Zhu
- first_name: Manish
full_name: Kumar, Manish
last_name: Kumar
- first_name: Takashi
full_name: Taniguchi, Takashi
last_name: Taniguchi
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Allan
full_name: MacDonald, Allan
last_name: MacDonald
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
citation:
ama: 'Polshyn H, Zhu J, Kumar M, et al. Correlated states and tunable topological
bands in twisted monolayer-bilayer graphene heterostructures. In: APS March
Meeting 2020. Vol 65. American Physical Society; 2020.'
apa: 'Polshyn, H., Zhu, J., Kumar, M., Taniguchi, T., Watanabe, K., MacDonald, A.,
& Young, A. (2020). Correlated states and tunable topological bands in twisted
monolayer-bilayer graphene heterostructures. In APS March Meeting 2020
(Vol. 65). Denver, CO, United States: American Physical Society.'
chicago: Polshyn, Hryhoriy, Jihang Zhu, Manish Kumar, Takashi Taniguchi, Kenji Watanabe,
Allan MacDonald, and Andrea Young. “Correlated States and Tunable Topological
Bands in Twisted Monolayer-Bilayer Graphene Heterostructures.” In APS March
Meeting 2020, Vol. 65. American Physical Society, 2020.
ieee: H. Polshyn et al., “Correlated states and tunable topological bands
in twisted monolayer-bilayer graphene heterostructures,” in APS March Meeting
2020, Denver, CO, United States, 2020, vol. 65, no. 1.
ista: 'Polshyn H, Zhu J, Kumar M, Taniguchi T, Watanabe K, MacDonald A, Young A.
2020. Correlated states and tunable topological bands in twisted monolayer-bilayer
graphene heterostructures. APS March Meeting 2020. APS: American Physical Society,
Bulletin of the American Physical Society, vol. 65, B51.00005.'
mla: Polshyn, Hryhoriy, et al. “Correlated States and Tunable Topological Bands
in Twisted Monolayer-Bilayer Graphene Heterostructures.” APS March Meeting
2020, vol. 65, no. 1, B51.00005, American Physical Society, 2020.
short: H. Polshyn, J. Zhu, M. Kumar, T. Taniguchi, K. Watanabe, A. MacDonald, A.
Young, in:, APS March Meeting 2020, American Physical Society, 2020.
conference:
end_date: 2020-03-06
location: Denver, CO, United States
name: 'APS: American Physical Society'
start_date: 2020-03-02
date_created: 2022-01-28T10:09:19Z
date_published: 2020-03-01T00:00:00Z
date_updated: 2022-02-08T10:22:08Z
day: '01'
extern: '1'
intvolume: ' 65'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://meetings.aps.org/Meeting/MAR20/Session/B51.5
month: '03'
oa: 1
oa_version: Published Version
publication: APS March Meeting 2020
publication_identifier:
issn:
- 0003-0503
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Correlated states and tunable topological bands in twisted monolayer-bilayer
graphene heterostructures
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 65
year: '2020'
...