--- _id: '9794' abstract: - lang: eng text: 'Lymph nodes (LNs) comprise two main structural elements: fibroblastic reticular cells that form dedicated niches for immune cell interaction and capsular fibroblasts that build a shell around the organ. Immunological challenge causes LNs to increase more than tenfold in size within a few days. Here, we characterized the biomechanics of LN swelling on the cellular and organ scale. We identified lymphocyte trapping by influx and proliferation as drivers of an outward pressure force, causing fibroblastic reticular cells of the T-zone (TRCs) and their associated conduits to stretch. After an initial phase of relaxation, TRCs sensed the resulting strain through cell matrix adhesions, which coordinated local growth and remodeling of the stromal network. While the expanded TRC network readopted its typical configuration, a massive fibrotic reaction of the organ capsule set in and countered further organ expansion. Thus, different fibroblast populations mechanically control LN swelling in a multitier fashion.' acknowledged_ssus: - _id: Bio - _id: EM-Fac - _id: PreCl - _id: LifeSc acknowledgement: This research was supported by the Scientific Service Units of IST Austria through resources provided by the Imaging and Optics, Electron Microscopy, Preclinical and Life Science Facilities. We thank C. Moussion for providing anti-PNAd antibody and D. Critchley for Talin1-floxed mice, and E. Papusheva for providing a custom 3D channel alignment script. This work was supported by a European Research Council grant ERC-CoG-72437 to M.S. M.H. was supported by Czech Sciencundation GACR 20-24603Y and Charles University PRIMUS/20/MED/013. article_processing_charge: No article_type: original author: - first_name: Frank P full_name: Assen, Frank P id: 3A8E7F24-F248-11E8-B48F-1D18A9856A87 last_name: Assen orcid: 0000-0003-3470-6119 - first_name: Jun full_name: Abe, Jun last_name: Abe - first_name: Miroslav full_name: Hons, Miroslav id: 4167FE56-F248-11E8-B48F-1D18A9856A87 last_name: Hons orcid: 0000-0002-6625-3348 - first_name: Robert full_name: Hauschild, Robert id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87 last_name: Hauschild orcid: 0000-0001-9843-3522 - first_name: Shayan full_name: Shamipour, Shayan id: 40B34FE2-F248-11E8-B48F-1D18A9856A87 last_name: Shamipour - first_name: Walter full_name: Kaufmann, Walter id: 3F99E422-F248-11E8-B48F-1D18A9856A87 last_name: Kaufmann orcid: 0000-0001-9735-5315 - first_name: Tommaso full_name: Costanzo, Tommaso id: D93824F4-D9BA-11E9-BB12-F207E6697425 last_name: Costanzo orcid: 0000-0001-9732-3815 - first_name: Gabriel full_name: Krens, Gabriel id: 2B819732-F248-11E8-B48F-1D18A9856A87 last_name: Krens orcid: 0000-0003-4761-5996 - first_name: Markus full_name: Brown, Markus id: 3DAB9AFC-F248-11E8-B48F-1D18A9856A87 last_name: Brown - first_name: Burkhard full_name: Ludewig, Burkhard last_name: Ludewig - first_name: Simon full_name: Hippenmeyer, Simon id: 37B36620-F248-11E8-B48F-1D18A9856A87 last_name: Hippenmeyer orcid: 0000-0003-2279-1061 - 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 - first_name: Wolfgang full_name: Weninger, Wolfgang last_name: Weninger - first_name: Edouard B full_name: Hannezo, Edouard B id: 3A9DB764-F248-11E8-B48F-1D18A9856A87 last_name: Hannezo orcid: 0000-0001-6005-1561 - first_name: Sanjiv A. full_name: Luther, Sanjiv A. last_name: Luther - first_name: Jens V. full_name: Stein, Jens V. last_name: Stein - 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: Assen FP, Abe J, Hons M, et al. Multitier mechanics control stromal adaptations in swelling lymph nodes. Nature Immunology. 2022;23:1246-1255. doi:10.1038/s41590-022-01257-4 apa: Assen, F. P., Abe, J., Hons, M., Hauschild, R., Shamipour, S., Kaufmann, W., … Sixt, M. K. (2022). Multitier mechanics control stromal adaptations in swelling lymph nodes. Nature Immunology. Springer Nature. https://doi.org/10.1038/s41590-022-01257-4 chicago: Assen, Frank P, Jun Abe, Miroslav Hons, Robert Hauschild, Shayan Shamipour, Walter Kaufmann, Tommaso Costanzo, et al. “Multitier Mechanics Control Stromal Adaptations in Swelling Lymph Nodes.” Nature Immunology. Springer Nature, 2022. https://doi.org/10.1038/s41590-022-01257-4. ieee: F. P. Assen et al., “Multitier mechanics control stromal adaptations in swelling lymph nodes,” Nature Immunology, vol. 23. Springer Nature, pp. 1246–1255, 2022. ista: Assen FP, Abe J, Hons M, Hauschild R, Shamipour S, Kaufmann W, Costanzo T, Krens G, Brown M, Ludewig B, Hippenmeyer S, Heisenberg C-PJ, Weninger W, Hannezo EB, Luther SA, Stein JV, Sixt MK. 2022. Multitier mechanics control stromal adaptations in swelling lymph nodes. Nature Immunology. 23, 1246–1255. mla: Assen, Frank P., et al. “Multitier Mechanics Control Stromal Adaptations in Swelling Lymph Nodes.” Nature Immunology, vol. 23, Springer Nature, 2022, pp. 1246–55, doi:10.1038/s41590-022-01257-4. short: F.P. Assen, J. Abe, M. Hons, R. Hauschild, S. Shamipour, W. Kaufmann, T. Costanzo, G. Krens, M. Brown, B. Ludewig, S. Hippenmeyer, C.-P.J. Heisenberg, W. Weninger, E.B. Hannezo, S.A. Luther, J.V. Stein, M.K. Sixt, Nature Immunology 23 (2022) 1246–1255. date_created: 2021-08-06T09:09:11Z date_published: 2022-07-11T00:00:00Z date_updated: 2023-08-02T06:53:07Z day: '11' ddc: - '570' department: - _id: SiHi - _id: CaHe - _id: EdHa - _id: EM-Fac - _id: Bio - _id: MiSi doi: 10.1038/s41590-022-01257-4 ec_funded: 1 external_id: isi: - '000822975900002' file: - access_level: open_access checksum: 628e7b49809f22c75b428842efe70c68 content_type: application/pdf creator: dernst date_created: 2022-07-25T07:11:32Z date_updated: 2022-07-25T07:11:32Z file_id: '11642' file_name: 2022_NatureImmunology_Assen.pdf file_size: 11475325 relation: main_file success: 1 file_date_updated: 2022-07-25T07:11:32Z has_accepted_license: '1' intvolume: ' 23' isi: 1 language: - iso: eng license: https://creativecommons.org/licenses/by/4.0/ month: '07' oa: 1 oa_version: Published Version page: 1246-1255 project: - _id: 25FE9508-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '724373' name: Cellular navigation along spatial gradients publication: Nature Immunology publication_identifier: eissn: - 1529-2916 issn: - 1529-2908 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Multitier mechanics control stromal adaptations in swelling lymph nodes 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: 23 year: '2022' ... --- _id: '10705' abstract: - lang: eng text: Although rigidity and jamming transitions have been widely studied in physics and material science, their importance in a number of biological processes, including embryo development, tissue homeostasis, wound healing, and disease progression, has only begun to be recognized in the past few years. The hypothesis that biological systems can undergo rigidity/jamming transitions is attractive, as it would allow these systems to change their material properties rapidly and strongly. However, whether such transitions indeed occur in biological systems, how they are being regulated, and what their physiological relevance might be, is still being debated. Here, we review theoretical and experimental advances from the past few years, focusing on the regulation and role of potential tissue rigidity transitions in different biological processes. acknowledgement: We thank present and former members of the Heisenberg and Hannezo groups, in particular Bernat Corominas-Murtra and Nicoletta Petridou, for helpful discussions, and Claudia Flandoli for the artwork. We apologize for not being able to cite a number of highly relevant studies, to stay within the maximum allowed number of citations. article_processing_charge: No article_type: original author: - first_name: Edouard B full_name: Hannezo, Edouard B id: 3A9DB764-F248-11E8-B48F-1D18A9856A87 last_name: Hannezo orcid: 0000-0001-6005-1561 - 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: Hannezo EB, Heisenberg C-PJ. Rigidity transitions in development and disease. Trends in Cell Biology. 2022;32(5):P433-444. doi:10.1016/j.tcb.2021.12.006 apa: Hannezo, E. B., & Heisenberg, C.-P. J. (2022). Rigidity transitions in development and disease. Trends in Cell Biology. Cell Press. https://doi.org/10.1016/j.tcb.2021.12.006 chicago: Hannezo, Edouard B, and Carl-Philipp J Heisenberg. “Rigidity Transitions in Development and Disease.” Trends in Cell Biology. Cell Press, 2022. https://doi.org/10.1016/j.tcb.2021.12.006. ieee: E. B. Hannezo and C.-P. J. Heisenberg, “Rigidity transitions in development and disease,” Trends in Cell Biology, vol. 32, no. 5. Cell Press, pp. P433-444, 2022. ista: Hannezo EB, Heisenberg C-PJ. 2022. Rigidity transitions in development and disease. Trends in Cell Biology. 32(5), P433-444. mla: Hannezo, Edouard B., and Carl-Philipp J. Heisenberg. “Rigidity Transitions in Development and Disease.” Trends in Cell Biology, vol. 32, no. 5, Cell Press, 2022, pp. P433-444, doi:10.1016/j.tcb.2021.12.006. short: E.B. Hannezo, C.-P.J. Heisenberg, Trends in Cell Biology 32 (2022) P433-444. date_created: 2022-01-30T23:01:34Z date_published: 2022-05-01T00:00:00Z date_updated: 2023-08-02T14:03:53Z day: '01' department: - _id: EdHa - _id: CaHe doi: 10.1016/j.tcb.2021.12.006 external_id: isi: - '000795773900009' pmid: - '35058104' intvolume: ' 32' isi: 1 issue: '5' language: - iso: eng month: '05' oa_version: None page: P433-444 pmid: 1 publication: Trends in Cell Biology publication_identifier: eissn: - 1879-3088 issn: - 0962-8924 publication_status: published publisher: Cell Press quality_controlled: '1' scopus_import: '1' status: public title: Rigidity transitions in development and disease type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 32 year: '2022' ... --- _id: '10766' abstract: - lang: eng text: Tension of the actomyosin cell cortex plays a key role in determining cell–cell contact growth and size. The level of cortical tension outside of the cell–cell contact, when pulling at the contact edge, scales with the total size to which a cell–cell contact can grow [J.-L. Maître et al., Science 338, 253–256 (2012)]. Here, we show in zebrafish primary germ-layer progenitor cells that this monotonic relationship only applies to a narrow range of cortical tension increase and that above a critical threshold, contact size inversely scales with cortical tension. This switch from cortical tension increasing to decreasing progenitor cell–cell contact size is caused by cortical tension promoting E-cadherin anchoring to the actomyosin cytoskeleton, thereby increasing clustering and stability of E-cadherin at the contact. After tension-mediated E-cadherin stabilization at the contact exceeds a critical threshold level, the rate by which the contact expands in response to pulling forces from the cortex sharply drops, leading to smaller contacts at physiologically relevant timescales of contact formation. Thus, the activity of cortical tension in expanding cell–cell contact size is limited by tension-stabilizing E-cadherin–actin complexes at the contact. acknowledged_ssus: - _id: Bio - _id: EM-Fac - _id: PreCl acknowledgement: 'We thank Guillaume Salbreaux, Silvia Grigolon, Edouard Hannezo, and Vanessa Barone for discussions and comments on the manuscript and Shayan Shamipour and Daniel Capek for help with data analysis. We also thank the Imaging & Optics, Electron Microscopy, and Zebrafish Facility Scientific Service Units at the Institute of Science and Technology Austria (ISTA)Nasser Darwish-Miranda for continuous support. We acknowledge Hitoshi Morita for the gift of VinculinB-GFP plasmid. This research was supported by an ISTA Fellow Marie-Curie Co-funding of regional, national, and international programmes Grant P_IST_EU01 (to J.S.), European Molecular Biology Organization Long-Term Fellowship Grant, ALTF reference number: 187-2013 (to M.S.), Schroedinger Fellowship J4332-B28 (to M.S.), and European Research Council Advanced Grant (MECSPEC; to C.-P.H.).' article_number: e2122030119 article_processing_charge: No article_type: original author: - first_name: Jana full_name: Slovakova, Jana id: 30F3F2F0-F248-11E8-B48F-1D18A9856A87 last_name: Slovakova - first_name: Mateusz K full_name: Sikora, Mateusz K id: 2F74BCDE-F248-11E8-B48F-1D18A9856A87 last_name: Sikora - first_name: Feyza N full_name: Arslan, Feyza N id: 49DA7910-F248-11E8-B48F-1D18A9856A87 last_name: Arslan orcid: 0000-0001-5809-9566 - 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: Gabriel full_name: Krens, Gabriel id: 2B819732-F248-11E8-B48F-1D18A9856A87 last_name: Krens orcid: 0000-0003-4761-5996 - first_name: Walter full_name: Kaufmann, Walter id: 3F99E422-F248-11E8-B48F-1D18A9856A87 last_name: Kaufmann orcid: 0000-0001-9735-5315 - first_name: Jack full_name: Merrin, Jack id: 4515C308-F248-11E8-B48F-1D18A9856A87 last_name: Merrin orcid: 0000-0001-5145-4609 - 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: Slovakova J, Sikora MK, Arslan FN, et al. Tension-dependent stabilization of E-cadherin limits cell-cell contact expansion in zebrafish germ-layer progenitor cells. Proceedings of the National Academy of Sciences of the United States of America. 2022;119(8). doi:10.1073/pnas.2122030119 apa: Slovakova, J., Sikora, M. K., Arslan, F. N., Caballero Mancebo, S., Krens, G., Kaufmann, W., … Heisenberg, C.-P. J. (2022). Tension-dependent stabilization of E-cadherin limits cell-cell contact expansion in zebrafish germ-layer progenitor cells. Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2122030119 chicago: Slovakova, Jana, Mateusz K Sikora, Feyza N Arslan, Silvia Caballero Mancebo, Gabriel Krens, Walter Kaufmann, Jack Merrin, and Carl-Philipp J Heisenberg. “Tension-Dependent Stabilization of E-Cadherin Limits Cell-Cell Contact Expansion in Zebrafish Germ-Layer Progenitor Cells.” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences, 2022. https://doi.org/10.1073/pnas.2122030119. ieee: J. Slovakova et al., “Tension-dependent stabilization of E-cadherin limits cell-cell contact expansion in zebrafish germ-layer progenitor cells,” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 8. Proceedings of the National Academy of Sciences, 2022. ista: Slovakova J, Sikora MK, Arslan FN, Caballero Mancebo S, Krens G, Kaufmann W, Merrin J, Heisenberg C-PJ. 2022. Tension-dependent stabilization of E-cadherin limits cell-cell contact expansion in zebrafish germ-layer progenitor cells. Proceedings of the National Academy of Sciences of the United States of America. 119(8), e2122030119. mla: Slovakova, Jana, et al. “Tension-Dependent Stabilization of E-Cadherin Limits Cell-Cell Contact Expansion in Zebrafish Germ-Layer Progenitor Cells.” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 8, e2122030119, Proceedings of the National Academy of Sciences, 2022, doi:10.1073/pnas.2122030119. short: J. Slovakova, M.K. Sikora, F.N. Arslan, S. Caballero Mancebo, G. Krens, W. Kaufmann, J. Merrin, C.-P.J. Heisenberg, Proceedings of the National Academy of Sciences of the United States of America 119 (2022). date_created: 2022-02-20T23:01:31Z date_published: 2022-02-14T00:00:00Z date_updated: 2023-08-02T14:26:51Z day: '14' ddc: - '570' department: - _id: CaHe - _id: EM-Fac - _id: Bio doi: 10.1073/pnas.2122030119 ec_funded: 1 external_id: isi: - '000766926900009' file: - access_level: open_access checksum: d49f83c3580613966f71768ddb9a55a5 content_type: application/pdf creator: dernst date_created: 2022-02-21T08:45:11Z date_updated: 2022-02-21T08:45:11Z file_id: '10780' file_name: 2022_PNAS_Slovakova.pdf file_size: 1609678 relation: main_file success: 1 file_date_updated: 2022-02-21T08:45:11Z has_accepted_license: '1' intvolume: ' 119' isi: 1 issue: '8' language: - iso: eng license: https://creativecommons.org/licenses/by-nc-nd/4.0/ month: '02' oa: 1 oa_version: Published Version project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme - _id: 260F1432-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '742573' name: Interaction and feedback between cell mechanics and fate specification in vertebrate gastrulation - _id: 2521E28E-B435-11E9-9278-68D0E5697425 grant_number: 187-2013 name: Modulation of adhesion function in cell-cell contact formation by cortical tension publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - '10916490' publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' related_material: record: - id: '9750' relation: earlier_version status: public scopus_import: '1' status: public title: Tension-dependent stabilization of E-cadherin limits cell-cell contact expansion in zebrafish germ-layer progenitor cells 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: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 119 year: '2022' ... --- _id: '12209' abstract: - lang: eng text: Embryo development requires biochemical signalling to generate patterns of cell fates and active mechanical forces to drive tissue shape changes. However, how these processes are coordinated, and how tissue patterning is preserved despite the cellular flows occurring during morphogenesis, remains poorly understood. Gastrulation is a crucial embryonic stage that involves both patterning and internalization of the mesendoderm germ layer tissue. Here we show that, in zebrafish embryos, a gradient in Nodal signalling orchestrates pattern-preserving internalization movements by triggering a motility-driven unjamming transition. In addition to its role as a morphogen determining embryo patterning, graded Nodal signalling mechanically subdivides the mesendoderm into a small fraction of highly protrusive leader cells, able to autonomously internalize via local unjamming, and less protrusive followers, which need to be pulled inwards by the leaders. The Nodal gradient further enforces a code of preferential adhesion coupling leaders to their immediate followers, resulting in a collective and ordered mode of internalization that preserves mesendoderm patterning. Integrating this dual mechanical role of Nodal signalling into minimal active particle simulations quantitatively predicts both physiological and experimentally perturbed internalization movements. This provides a quantitative framework for how a morphogen-encoded unjamming transition can bidirectionally couple tissue mechanics with patterning during complex three-dimensional morphogenesis. acknowledged_ssus: - _id: Bio - _id: LifeSc acknowledgement: "We thank K. Sampath, A. Pauli and Y. Bellaїche for feedback on the manuscript. We also thank the members of the Heisenberg group, in particular A. Schauer and F. Nur Arslan, for help, technical advice and discussions, and the Bioimaging and Life Science facilities at IST\r\nAustria for continuous support. We thank C. Flandoli for the artwork in the figures. This work was supported by postdoctoral fellowships from EMBO (LTF-850-2017) and HFSP (LT000429/2018-L2) to D.P. and the European Union (European Research Council starting grant 851288 to É.H. and European Research Council advanced grant 742573 to C.-P.H.)." article_processing_charge: No article_type: original author: - first_name: Diana C full_name: Nunes Pinheiro, Diana C id: 2E839F16-F248-11E8-B48F-1D18A9856A87 last_name: Nunes Pinheiro orcid: 0000-0003-4333-7503 - first_name: Roland full_name: Kardos, Roland id: 4039350E-F248-11E8-B48F-1D18A9856A87 last_name: Kardos - first_name: Edouard B full_name: Hannezo, Edouard B id: 3A9DB764-F248-11E8-B48F-1D18A9856A87 last_name: Hannezo orcid: 0000-0001-6005-1561 - 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: Nunes Pinheiro DC, Kardos R, Hannezo EB, Heisenberg C-PJ. Morphogen gradient orchestrates pattern-preserving tissue morphogenesis via motility-driven unjamming. Nature Physics. 2022;18(12):1482-1493. doi:10.1038/s41567-022-01787-6 apa: Nunes Pinheiro, D. C., Kardos, R., Hannezo, E. B., & Heisenberg, C.-P. J. (2022). Morphogen gradient orchestrates pattern-preserving tissue morphogenesis via motility-driven unjamming. Nature Physics. Springer Nature. https://doi.org/10.1038/s41567-022-01787-6 chicago: Nunes Pinheiro, Diana C, Roland Kardos, Edouard B Hannezo, and Carl-Philipp J Heisenberg. “Morphogen Gradient Orchestrates Pattern-Preserving Tissue Morphogenesis via Motility-Driven Unjamming.” Nature Physics. Springer Nature, 2022. https://doi.org/10.1038/s41567-022-01787-6. ieee: D. C. Nunes Pinheiro, R. Kardos, E. B. Hannezo, and C.-P. J. Heisenberg, “Morphogen gradient orchestrates pattern-preserving tissue morphogenesis via motility-driven unjamming,” Nature Physics, vol. 18, no. 12. Springer Nature, pp. 1482–1493, 2022. ista: Nunes Pinheiro DC, Kardos R, Hannezo EB, Heisenberg C-PJ. 2022. Morphogen gradient orchestrates pattern-preserving tissue morphogenesis via motility-driven unjamming. Nature Physics. 18(12), 1482–1493. mla: Nunes Pinheiro, Diana C., et al. “Morphogen Gradient Orchestrates Pattern-Preserving Tissue Morphogenesis via Motility-Driven Unjamming.” Nature Physics, vol. 18, no. 12, Springer Nature, 2022, pp. 1482–93, doi:10.1038/s41567-022-01787-6. short: D.C. Nunes Pinheiro, R. Kardos, E.B. Hannezo, C.-P.J. Heisenberg, Nature Physics 18 (2022) 1482–1493. date_created: 2023-01-16T09:45:19Z date_published: 2022-12-01T00:00:00Z date_updated: 2023-08-04T09:15:58Z day: '01' ddc: - '570' department: - _id: CaHe - _id: EdHa doi: 10.1038/s41567-022-01787-6 ec_funded: 1 external_id: isi: - '000871319900002' file: - access_level: open_access checksum: c86a8e8d80d1bfc46d56a01e88a2526a content_type: application/pdf creator: dernst date_created: 2023-01-27T07:32:01Z date_updated: 2023-01-27T07:32:01Z file_id: '12412' file_name: 2022_NaturePhysics_Pinheiro.pdf file_size: 36703569 relation: main_file success: 1 file_date_updated: 2023-01-27T07:32:01Z has_accepted_license: '1' intvolume: ' 18' isi: 1 issue: '12' keyword: - General Physics and Astronomy language: - iso: eng month: '12' oa: 1 oa_version: Published Version page: 1482-1493 project: - _id: 26520D1E-B435-11E9-9278-68D0E5697425 grant_number: ALTF 850-2017 name: Coordination of mesendoderm cell fate specification and internalization during zebrafish gastrulation - _id: 26520D1E-B435-11E9-9278-68D0E5697425 grant_number: ALTF 850-2017 name: Coordination of mesendoderm cell fate specification and internalization during zebrafish gastrulation - _id: 05943252-7A3F-11EA-A408-12923DDC885E call_identifier: H2020 grant_number: '851288' name: Design Principles of Branching Morphogenesis - _id: 260F1432-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '742573' name: Interaction and feedback between cell mechanics and fate specification in vertebrate gastrulation publication: Nature Physics publication_identifier: eissn: - 1745-2481 issn: - 1745-2473 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Morphogen gradient orchestrates pattern-preserving tissue morphogenesis via motility-driven unjamming 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: 18 year: '2022' ... --- _id: '12231' abstract: - lang: eng text: Ventral tail bending, which is transient but pronounced, is found in many chordate embryos and constitutes an interesting model of how tissue interactions control embryo shape. Here, we identify one key upstream regulator of ventral tail bending in embryos of the ascidian Ciona. We show that during the early tailbud stages, ventral epidermal cells exhibit a boat-shaped morphology (boat cell) with a narrow apical surface where phosphorylated myosin light chain (pMLC) accumulates. We further show that interfering with the function of the BMP ligand Admp led to pMLC localizing to the basal instead of the apical side of ventral epidermal cells and a reduced number of boat cells. Finally, we show that cutting ventral epidermal midline cells at their apex using an ultraviolet laser relaxed ventral tail bending. Based on these results, we propose a previously unreported function for Admp in localizing pMLC to the apical side of ventral epidermal cells, which causes the tail to bend ventrally by resisting antero-posterior notochord extension at the ventral side of the tail. acknowledgement: "iona intestinalis adults were provided by Dr Yutaka Satou (Kyoto University) and Dr Manabu Yoshida (the University of Tokyo) with support from the National Bio-Resource Project of AMED, Japan. We thank Dr Hidehiko Hashimoto and Dr Yuji Mizotani for technical information about 1P-myosin antibody staining. We thank Dr Kaoru Imai and Dr Yutaka Satou for valuable discussion about Admp and for the DNA construct of Bmp2/4 under the Dlx.b upstream sequence. We thank Ms Maki Kogure for constructing the FUSION360 of the intercalating epidermal cell.\r\nThis work was supported by funding from the Japan Society for the Promotion of Science (JP16H01451, JP21H00440). Open Access funding provided by Keio University: Keio Gijuku Daigaku." article_number: dev200215 article_processing_charge: No article_type: original author: - first_name: Yuki S. full_name: Kogure, Yuki S. last_name: Kogure - first_name: Hiromochi full_name: Muraoka, Hiromochi last_name: Muraoka - first_name: Wataru C. full_name: Koizumi, Wataru C. last_name: Koizumi - first_name: Raphaël full_name: Gelin-alessi, Raphaël last_name: Gelin-alessi - first_name: Benoit G full_name: Godard, Benoit G id: 3263621A-F248-11E8-B48F-1D18A9856A87 last_name: Godard - first_name: Kotaro full_name: Oka, Kotaro last_name: Oka - 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 - first_name: Kohji full_name: Hotta, Kohji last_name: Hotta citation: ama: Kogure YS, Muraoka H, Koizumi WC, et al. Admp regulates tail bending by controlling ventral epidermal cell polarity via phosphorylated myosin localization in Ciona. Development. 2022;149(21). doi:10.1242/dev.200215 apa: Kogure, Y. S., Muraoka, H., Koizumi, W. C., Gelin-alessi, R., Godard, B. G., Oka, K., … Hotta, K. (2022). Admp regulates tail bending by controlling ventral epidermal cell polarity via phosphorylated myosin localization in Ciona. Development. The Company of Biologists. https://doi.org/10.1242/dev.200215 chicago: Kogure, Yuki S., Hiromochi Muraoka, Wataru C. Koizumi, Raphaël Gelin-alessi, Benoit G Godard, Kotaro Oka, Carl-Philipp J Heisenberg, and Kohji Hotta. “Admp Regulates Tail Bending by Controlling Ventral Epidermal Cell Polarity via Phosphorylated Myosin Localization in Ciona.” Development. The Company of Biologists, 2022. https://doi.org/10.1242/dev.200215. ieee: Y. S. Kogure et al., “Admp regulates tail bending by controlling ventral epidermal cell polarity via phosphorylated myosin localization in Ciona,” Development, vol. 149, no. 21. The Company of Biologists, 2022. ista: Kogure YS, Muraoka H, Koizumi WC, Gelin-alessi R, Godard BG, Oka K, Heisenberg C-PJ, Hotta K. 2022. Admp regulates tail bending by controlling ventral epidermal cell polarity via phosphorylated myosin localization in Ciona. Development. 149(21), dev200215. mla: Kogure, Yuki S., et al. “Admp Regulates Tail Bending by Controlling Ventral Epidermal Cell Polarity via Phosphorylated Myosin Localization in Ciona.” Development, vol. 149, no. 21, dev200215, The Company of Biologists, 2022, doi:10.1242/dev.200215. short: Y.S. Kogure, H. Muraoka, W.C. Koizumi, R. Gelin-alessi, B.G. Godard, K. Oka, C.-P.J. Heisenberg, K. Hotta, Development 149 (2022). date_created: 2023-01-16T09:50:12Z date_published: 2022-11-01T00:00:00Z date_updated: 2023-08-04T09:33:24Z day: '01' ddc: - '570' department: - _id: CaHe doi: 10.1242/dev.200215 external_id: isi: - '000903991700002' pmid: - '36227591' file: - access_level: open_access checksum: 871b9c58eb79b9e60752de25a46938d6 content_type: application/pdf creator: dernst date_created: 2023-01-27T10:36:50Z date_updated: 2023-01-27T10:36:50Z file_id: '12423' file_name: 2022_Development_Kogure.pdf file_size: 9160451 relation: main_file success: 1 file_date_updated: 2023-01-27T10:36:50Z has_accepted_license: '1' intvolume: ' 149' isi: 1 issue: '21' keyword: - Developmental Biology - Molecular Biology language: - iso: eng month: '11' oa: 1 oa_version: Published Version pmid: 1 publication: Development publication_identifier: eissn: - 1477-9129 issn: - 0950-1991 publication_status: published publisher: The Company of Biologists quality_controlled: '1' scopus_import: '1' status: public title: Admp regulates tail bending by controlling ventral epidermal cell polarity via phosphorylated myosin localization in Ciona 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: 149 year: '2022' ... --- _id: '12238' abstract: - lang: eng text: Upon the initiation of collective cell migration, the cells at the free edge are specified as leader cells; however, the mechanism underlying the leader cell specification remains elusive. Here, we show that lamellipodial extension after the release from mechanical confinement causes sustained extracellular signal-regulated kinase (ERK) activation and underlies the leader cell specification. Live-imaging of Madin-Darby canine kidney (MDCK) cells and mouse epidermis through the use of Förster resonance energy transfer (FRET)-based biosensors showed that leader cells exhibit sustained ERK activation in a hepatocyte growth factor (HGF)-dependent manner. Meanwhile, follower cells exhibit oscillatory ERK activation waves in an epidermal growth factor (EGF) signaling-dependent manner. Lamellipodial extension at the free edge increases the cellular sensitivity to HGF. The HGF-dependent ERK activation, in turn, promotes lamellipodial extension, thereby forming a positive feedback loop between cell extension and ERK activation and specifying the cells at the free edge as the leader cells. Our findings show that the integration of physical and biochemical cues underlies the leader cell specification during collective cell migration. acknowledgement: We thank the members of the Matsuda Laboratory for their helpful discussion and encouragement, and we thank K. Hirano and K. Takakura for their technical assistance. This work was supported by the Kyoto University Live Imaging Center. Financial support was provided in the form of JSPS KAKENHI grants (nos. 17J02107 and 20K22653 to N.H., and 20H05898 and 19H00993 to M.M.), a JST CREST grant (no. JPMJCR1654 to M.M.), a Moonshot R&D grant (no. JPMJPS2022-11 to M.M.), Generalitat de Catalunya and the CERCA Programme (no. SGR-2017-01602 to X.T.), MICCINN/FEDER (no. PGC2018-099645-B-I00 to X.T.), and European Research Council (no. Adv-883739 to X.T.). IBEC is a recipient of a Severo Ochoa Award of Excellence from the MINECO. This work was partly supported by an Extramural Collaborative Research Grant of Cancer Research Institute, Kanazawa University. article_processing_charge: No article_type: original author: - first_name: Naoya full_name: Hino, Naoya id: 5299a9ce-7679-11eb-a7bc-d1e62b936307 last_name: Hino - first_name: Kimiya full_name: Matsuda, Kimiya last_name: Matsuda - first_name: Yuya full_name: Jikko, Yuya last_name: Jikko - first_name: Gembu full_name: Maryu, Gembu last_name: Maryu - first_name: Katsuya full_name: Sakai, Katsuya last_name: Sakai - first_name: Ryu full_name: Imamura, Ryu last_name: Imamura - first_name: Shinya full_name: Tsukiji, Shinya last_name: Tsukiji - first_name: Kazuhiro full_name: Aoki, Kazuhiro last_name: Aoki - first_name: Kenta full_name: Terai, Kenta last_name: Terai - first_name: Tsuyoshi full_name: Hirashima, Tsuyoshi last_name: Hirashima - first_name: Xavier full_name: Trepat, Xavier last_name: Trepat - first_name: Michiyuki full_name: Matsuda, Michiyuki last_name: Matsuda citation: ama: Hino N, Matsuda K, Jikko Y, et al. A feedback loop between lamellipodial extension and HGF-ERK signaling specifies leader cells during collective cell migration. Developmental Cell. 2022;57(19):2290-2304.e7. doi:10.1016/j.devcel.2022.09.003 apa: Hino, N., Matsuda, K., Jikko, Y., Maryu, G., Sakai, K., Imamura, R., … Matsuda, M. (2022). A feedback loop between lamellipodial extension and HGF-ERK signaling specifies leader cells during collective cell migration. Developmental Cell. Elsevier. https://doi.org/10.1016/j.devcel.2022.09.003 chicago: Hino, Naoya, Kimiya Matsuda, Yuya Jikko, Gembu Maryu, Katsuya Sakai, Ryu Imamura, Shinya Tsukiji, et al. “A Feedback Loop between Lamellipodial Extension and HGF-ERK Signaling Specifies Leader Cells during Collective Cell Migration.” Developmental Cell. Elsevier, 2022. https://doi.org/10.1016/j.devcel.2022.09.003. ieee: N. Hino et al., “A feedback loop between lamellipodial extension and HGF-ERK signaling specifies leader cells during collective cell migration,” Developmental Cell, vol. 57, no. 19. Elsevier, p. 2290–2304.e7, 2022. ista: Hino N, Matsuda K, Jikko Y, Maryu G, Sakai K, Imamura R, Tsukiji S, Aoki K, Terai K, Hirashima T, Trepat X, Matsuda M. 2022. A feedback loop between lamellipodial extension and HGF-ERK signaling specifies leader cells during collective cell migration. Developmental Cell. 57(19), 2290–2304.e7. mla: Hino, Naoya, et al. “A Feedback Loop between Lamellipodial Extension and HGF-ERK Signaling Specifies Leader Cells during Collective Cell Migration.” Developmental Cell, vol. 57, no. 19, Elsevier, 2022, p. 2290–2304.e7, doi:10.1016/j.devcel.2022.09.003. short: N. Hino, K. Matsuda, Y. Jikko, G. Maryu, K. Sakai, R. Imamura, S. Tsukiji, K. Aoki, K. Terai, T. Hirashima, X. Trepat, M. Matsuda, Developmental Cell 57 (2022) 2290–2304.e7. date_created: 2023-01-16T09:51:39Z date_published: 2022-10-01T00:00:00Z date_updated: 2023-08-04T09:38:53Z day: '01' department: - _id: CaHe doi: 10.1016/j.devcel.2022.09.003 external_id: isi: - '000898428700006' pmid: - '36174555' intvolume: ' 57' isi: 1 issue: '19' keyword: - Developmental Biology - Cell Biology - General Biochemistry - Genetics and Molecular Biology - Molecular Biology language: - iso: eng month: '10' oa_version: None page: 2290-2304.e7 pmid: 1 publication: Developmental Cell publication_identifier: issn: - 1534-5807 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: A feedback loop between lamellipodial extension and HGF-ERK signaling specifies leader cells during collective cell migration type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 57 year: '2022' ... --- _id: '12368' abstract: - lang: eng text: "Metazoan development relies on the formation and remodeling of cell-cell contacts. The \r\nbinding of adhesion receptors and remodeling of the actomyosin cell cortex at cell-cell \r\ninteraction sites have been implicated in cell-cell contact formation. Yet, how these two \r\nprocesses functionally interact to drive cell-cell contact expansion and strengthening \r\nremains unclear. Here, we study how primary germ layer progenitor cells from zebrafish \r\nbind to supported lipid bilayers (SLB) functionalized with E-cadherin ectodomains as an \r\nassay system for monitoring cell-cell contact formation at high spatiotemporal resolution. \r\nWe show that cell-cell contact formation represents a two-tiered process: E-cadherin\x02mediated downregulation of the small GTPase RhoA at the forming contact leads to both \r\ndepletion of Myosin-2 and decrease of F-actin. This is followed by centrifugal actin \r\nnetwork flows at the contact triggered by a sharp gradient of Myosin-2 at the rim of the \r\ncontact zone, with Myosin-2 displaying higher cortical localization outside than inside of \r\nthe contact. These centrifugal cortical actin flows, in turn, not only further dilute the actin \r\nnetwork at the contact disc, but also lead to an accumulation of both F-actin and E\x02cadherin at the contact rim. Eventually, this combination of actomyosin downregulation \r\nand flows at the contact contribute to the characteristic molecular organization implicated \r\nin contact formation and maintenance: depletion of cortical actomyosin at the contact disc, \r\ndriving contact expansion by lowering interfacial tension at the contact, and accumulation \r\nof both E-cadherin and F-actin at the contact rim, mechanically linking the contractile \r\ncortices of the adhering cells. Thus, using a biomimetic assay, we exemplify how \r\nadhesion signaling and cell mechanics function together to modulate the spatial \r\norganization of cell-cell contacts." acknowledged_ssus: - _id: LifeSc - _id: Bio - _id: NanoFab alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Feyza N full_name: Arslan, Feyza N id: 49DA7910-F248-11E8-B48F-1D18A9856A87 last_name: Arslan orcid: 0000-0001-5809-9566 citation: ama: Arslan FN. Remodeling of E-cadherin-mediated contacts via cortical  flows. 2022. doi:10.15479/at:ista:12153 apa: Arslan, F. N. (2022). Remodeling of E-cadherin-mediated contacts via cortical  flows. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:12153 chicago: Arslan, Feyza N. “Remodeling of E-Cadherin-Mediated Contacts via Cortical  Flows.” Institute of Science and Technology Austria, 2022. https://doi.org/10.15479/at:ista:12153. ieee: F. N. Arslan, “Remodeling of E-cadherin-mediated contacts via cortical  flows,” Institute of Science and Technology Austria, 2022. ista: Arslan FN. 2022. Remodeling of E-cadherin-mediated contacts via cortical  flows. Institute of Science and Technology Austria. mla: Arslan, Feyza N. Remodeling of E-Cadherin-Mediated Contacts via Cortical  Flows. Institute of Science and Technology Austria, 2022, doi:10.15479/at:ista:12153. short: F.N. Arslan, Remodeling of E-Cadherin-Mediated Contacts via Cortical  Flows, Institute of Science and Technology Austria, 2022. date_created: 2023-01-25T10:43:24Z date_published: 2022-09-29T00:00:00Z date_updated: 2023-08-08T13:14:10Z day: '29' ddc: - '570' degree_awarded: PhD department: - _id: GradSch - _id: CaHe doi: 10.15479/at:ista:12153 ec_funded: 1 file: - access_level: open_access checksum: e54a3e69b83ebf166544164afd25608e content_type: application/pdf creator: cchlebak date_created: 2023-01-25T10:52:46Z date_updated: 2023-01-25T10:52:46Z file_id: '12369' file_name: THESIS_FINAL_FArslan_pdfa.pdf file_size: 14581024 relation: main_file success: 1 file_date_updated: 2023-01-25T10:52:46Z has_accepted_license: '1' language: - iso: eng month: '09' oa: 1 oa_version: Published Version page: '113' project: - _id: 260F1432-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '742573' name: Interaction and feedback between cell mechanics and fate specification in vertebrate gastrulation publication_identifier: isbn: - ' 978-3-99078-025-1 ' issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria related_material: record: - id: '9350' 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: Remodeling of E-cadherin-mediated contacts via cortical 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: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2022' ... --- _id: '9245' abstract: - lang: eng text: Tissue morphogenesis is driven by mechanical forces triggering cell movements and shape changes. Quantitatively measuring tension within tissues is of great importance for understanding the role of mechanical signals acting on the cell and tissue level during morphogenesis. Here we introduce laser ablation as a useful tool to probe tissue tension within the granulosa layer, an epithelial monolayer of somatic cells that surround the zebrafish female gamete during folliculogenesis. We describe in detail how to isolate follicles, mount samples, perform laser surgery, and analyze the data. acknowledged_ssus: - _id: Bio - _id: PreCl acknowledgement: We thank Prof. Masazumi Tada and Roland Dosch for providing transgenic zebrafish lines, the Heisenberg lab for technical assistance and feedback on the manuscript, and the Bioimaging and Fish facilities of IST Austria for continuous support. This work was funded by an ERC advanced grant (MECSPEC to C.-P.H.). alternative_title: - Methods in Molecular Biology article_processing_charge: No author: - first_name: Peng full_name: Xia, Peng id: 4AB6C7D0-F248-11E8-B48F-1D18A9856A87 last_name: Xia orcid: 0000-0002-5419-7756 - 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: 'Xia P, Heisenberg C-PJ. Quantifying tissue tension in the granulosa layer after laser surgery. In: Dosch R, ed. Germline Development in the Zebrafish. Vol 2218. Humana; 2021:117-128. doi:10.1007/978-1-0716-0970-5_10' apa: Xia, P., & Heisenberg, C.-P. J. (2021). Quantifying tissue tension in the granulosa layer after laser surgery. In R. Dosch (Ed.), Germline Development in the Zebrafish (Vol. 2218, pp. 117–128). Humana. https://doi.org/10.1007/978-1-0716-0970-5_10 chicago: Xia, Peng, and Carl-Philipp J Heisenberg. “Quantifying Tissue Tension in the Granulosa Layer after Laser Surgery.” In Germline Development in the Zebrafish, edited by Roland Dosch, 2218:117–28. Humana, 2021. https://doi.org/10.1007/978-1-0716-0970-5_10. ieee: P. Xia and C.-P. J. Heisenberg, “Quantifying tissue tension in the granulosa layer after laser surgery,” in Germline Development in the Zebrafish, vol. 2218, R. Dosch, Ed. Humana, 2021, pp. 117–128. ista: 'Xia P, Heisenberg C-PJ. 2021.Quantifying tissue tension in the granulosa layer after laser surgery. In: Germline Development in the Zebrafish. Methods in Molecular Biology, vol. 2218, 117–128.' mla: Xia, Peng, and Carl-Philipp J. Heisenberg. “Quantifying Tissue Tension in the Granulosa Layer after Laser Surgery.” Germline Development in the Zebrafish, edited by Roland Dosch, vol. 2218, Humana, 2021, pp. 117–28, doi:10.1007/978-1-0716-0970-5_10. short: P. Xia, C.-P.J. Heisenberg, in:, R. Dosch (Ed.), Germline Development in the Zebrafish, Humana, 2021, pp. 117–128. date_created: 2021-03-14T23:01:34Z date_published: 2021-02-20T00:00:00Z date_updated: 2022-06-03T10:57:55Z day: '20' department: - _id: CaHe doi: 10.1007/978-1-0716-0970-5_10 ec_funded: 1 editor: - first_name: Roland full_name: Dosch, Roland last_name: Dosch external_id: pmid: - '33606227' intvolume: ' 2218' keyword: - Tissue tension - Morphogenesis - Laser ablation - Zebrafish folliculogenesis - Granulosa cells language: - iso: eng month: '02' oa_version: None page: 117-128 pmid: 1 project: - _id: 260F1432-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '742573' name: Interaction and feedback between cell mechanics and fate specification in vertebrate gastrulation publication: Germline Development in the Zebrafish publication_identifier: eisbn: - 978-1-0716-0970-5 eissn: - 1940-6029 isbn: - 978-1-0716-0969-9 issn: - 1064-3745 publication_status: published publisher: Humana quality_controlled: '1' scopus_import: '1' status: public title: Quantifying tissue tension in the granulosa layer after laser surgery type: book_chapter user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 2218 year: '2021' ... --- _id: '8966' abstract: - lang: eng text: During development, a single cell is transformed into a highly complex organism through progressive cell division, specification and rearrangement. An important prerequisite for the emergence of patterns within the developing organism is to establish asymmetries at various scales, ranging from individual cells to the entire embryo, eventually giving rise to the different body structures. This becomes especially apparent during gastrulation, when the earliest major lineage restriction events lead to the formation of the different germ layers. Traditionally, the unfolding of the developmental program from symmetry breaking to germ layer formation has been studied by dissecting the contributions of different signaling pathways and cellular rearrangements in the in vivo context of intact embryos. Recent efforts, using the intrinsic capacity of embryonic stem cells to self-assemble and generate embryo-like structures de novo, have opened new avenues for understanding the many ways by which an embryo can be built and the influence of extrinsic factors therein. Here, we discuss and compare divergent and conserved strategies leading to germ layer formation in embryos as compared to in vitro systems, their upstream molecular cascades and the role of extrinsic factors in this process. acknowledgement: We thank Nicoletta Petridou, Diana Pinheiro, Cornelia Schwayer and Stefania Tavano for feedback on the manuscript. Research in the Heisenberg lab is supported by an ERC Advanced Grant (MECSPEC 742573) to C.-P.H. A.S. is a recipient of a DOC Fellowship of the Austrian Academy of Science. article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Alexandra full_name: Schauer, Alexandra id: 30A536BA-F248-11E8-B48F-1D18A9856A87 last_name: Schauer orcid: 0000-0001-7659-9142 - 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: Schauer A, Heisenberg C-PJ. Reassembling gastrulation. Developmental Biology. 2021;474:71-81. doi:10.1016/j.ydbio.2020.12.014 apa: Schauer, A., & Heisenberg, C.-P. J. (2021). Reassembling gastrulation. Developmental Biology. Elsevier. https://doi.org/10.1016/j.ydbio.2020.12.014 chicago: Schauer, Alexandra, and Carl-Philipp J Heisenberg. “Reassembling Gastrulation.” Developmental Biology. Elsevier, 2021. https://doi.org/10.1016/j.ydbio.2020.12.014. ieee: A. Schauer and C.-P. J. Heisenberg, “Reassembling gastrulation,” Developmental Biology, vol. 474. Elsevier, pp. 71–81, 2021. ista: Schauer A, Heisenberg C-PJ. 2021. Reassembling gastrulation. Developmental Biology. 474, 71–81. mla: Schauer, Alexandra, and Carl-Philipp J. Heisenberg. “Reassembling Gastrulation.” Developmental Biology, vol. 474, Elsevier, 2021, pp. 71–81, doi:10.1016/j.ydbio.2020.12.014. short: A. Schauer, C.-P.J. Heisenberg, Developmental Biology 474 (2021) 71–81. date_created: 2020-12-22T09:53:34Z date_published: 2021-06-01T00:00:00Z date_updated: 2023-08-07T13:30:01Z day: '01' ddc: - '570' department: - _id: CaHe doi: 10.1016/j.ydbio.2020.12.014 ec_funded: 1 external_id: isi: - '000639461800008' file: - access_level: open_access checksum: fa2a5731fd16ab171b029f32f031c440 content_type: application/pdf creator: kschuh date_created: 2021-08-11T10:28:06Z date_updated: 2021-08-11T10:28:06Z file_id: '9880' file_name: 2021_DevBiology_Schauer.pdf file_size: 1440321 relation: main_file success: 1 file_date_updated: 2021-08-11T10:28:06Z has_accepted_license: '1' intvolume: ' 474' isi: 1 keyword: - Developmental Biology - Cell Biology - Molecular Biology language: - iso: eng month: '06' oa: 1 oa_version: Published Version page: 71-81 project: - _id: 260F1432-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '742573' name: Interaction and feedback between cell mechanics and fate specification in vertebrate gastrulation - _id: 26B1E39C-B435-11E9-9278-68D0E5697425 grant_number: '25239' name: 'Mesendoderm specification in zebrafish: The role of extraembryonic tissues' publication: Developmental Biology publication_identifier: issn: - 0012-1606 publication_status: published publisher: Elsevier quality_controlled: '1' related_material: record: - id: '12891' relation: dissertation_contains status: public scopus_import: '1' status: public title: Reassembling gastrulation 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: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 474 year: '2021' ... --- _id: '9316' abstract: - lang: eng text: Embryo morphogenesis is impacted by dynamic changes in tissue material properties, which have been proposed to occur via processes akin to phase transitions (PTs). Here, we show that rigidity percolation provides a simple and robust theoretical framework to predict material/structural PTs of embryonic tissues from local cell connectivity. By using percolation theory, combined with directly monitoring dynamic changes in tissue rheology and cell contact mechanics, we demonstrate that the zebrafish blastoderm undergoes a genuine rigidity PT, brought about by a small reduction in adhesion-dependent cell connectivity below a critical value. We quantitatively predict and experimentally verify hallmarks of PTs, including power-law exponents and associated discontinuities of macroscopic observables. Finally, we show that this uniform PT depends on blastoderm cells undergoing meta-synchronous divisions causing random and, consequently, uniform changes in cell connectivity. Collectively, our theoretical and experimental findings reveal the structural basis of material PTs in an organismal context. acknowledged_ssus: - _id: Bio - _id: PreCl acknowledgement: We thank Carl Goodrich and the members of the Heisenberg and Hannezo groups, in particular Reka Korei, for help, technical advice, and discussions; and the Bioimaging and zebrafish facilities of the IST Austria for continuous support. This work was supported by the Elise Richter Program of Austrian Science Fund (FWF) to N.I.P. ( V 736-B26 ) and the European Union (European Research Council Advanced Grant 742573 to C.-P.H. and European Research Council Starting Grant 851288 to E.H.). article_processing_charge: No article_type: original author: - first_name: Nicoletta full_name: Petridou, Nicoletta id: 2A003F6C-F248-11E8-B48F-1D18A9856A87 last_name: Petridou orcid: 0000-0002-8451-1195 - first_name: Bernat full_name: Corominas-Murtra, Bernat id: 43BE2298-F248-11E8-B48F-1D18A9856A87 last_name: Corominas-Murtra orcid: 0000-0001-9806-5643 - 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 - first_name: Edouard B full_name: Hannezo, Edouard B id: 3A9DB764-F248-11E8-B48F-1D18A9856A87 last_name: Hannezo orcid: 0000-0001-6005-1561 citation: ama: Petridou N, Corominas-Murtra B, Heisenberg C-PJ, Hannezo EB. Rigidity percolation uncovers a structural basis for embryonic tissue phase transitions. Cell. 2021;184(7):1914-1928.e19. doi:10.1016/j.cell.2021.02.017 apa: Petridou, N., Corominas-Murtra, B., Heisenberg, C.-P. J., & Hannezo, E. B. (2021). Rigidity percolation uncovers a structural basis for embryonic tissue phase transitions. Cell. Elsevier. https://doi.org/10.1016/j.cell.2021.02.017 chicago: Petridou, Nicoletta, Bernat Corominas-Murtra, Carl-Philipp J Heisenberg, and Edouard B Hannezo. “Rigidity Percolation Uncovers a Structural Basis for Embryonic Tissue Phase Transitions.” Cell. Elsevier, 2021. https://doi.org/10.1016/j.cell.2021.02.017. ieee: N. Petridou, B. Corominas-Murtra, C.-P. J. Heisenberg, and E. B. Hannezo, “Rigidity percolation uncovers a structural basis for embryonic tissue phase transitions,” Cell, vol. 184, no. 7. Elsevier, p. 1914–1928.e19, 2021. ista: Petridou N, Corominas-Murtra B, Heisenberg C-PJ, Hannezo EB. 2021. Rigidity percolation uncovers a structural basis for embryonic tissue phase transitions. Cell. 184(7), 1914–1928.e19. mla: Petridou, Nicoletta, et al. “Rigidity Percolation Uncovers a Structural Basis for Embryonic Tissue Phase Transitions.” Cell, vol. 184, no. 7, Elsevier, 2021, p. 1914–1928.e19, doi:10.1016/j.cell.2021.02.017. short: N. Petridou, B. Corominas-Murtra, C.-P.J. Heisenberg, E.B. Hannezo, Cell 184 (2021) 1914–1928.e19. date_created: 2021-04-11T22:01:14Z date_published: 2021-04-01T00:00:00Z date_updated: 2023-08-07T14:33:59Z day: '01' ddc: - '570' department: - _id: CaHe - _id: EdHa doi: 10.1016/j.cell.2021.02.017 ec_funded: 1 external_id: isi: - '000636734000022' pmid: - '33730596' file: - access_level: open_access checksum: 1e5295fbd9c2a459173ec45a0e8a7c2e content_type: application/pdf creator: cziletti date_created: 2021-06-08T10:04:10Z date_updated: 2021-06-08T10:04:10Z file_id: '9534' file_name: 2021_Cell_Petridou.pdf file_size: 11405875 relation: main_file success: 1 file_date_updated: 2021-06-08T10:04:10Z has_accepted_license: '1' intvolume: ' 184' isi: 1 issue: '7' language: - iso: eng month: '04' oa: 1 oa_version: Published Version page: 1914-1928.e19 pmid: 1 project: - _id: 260F1432-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '742573' name: Interaction and feedback between cell mechanics and fate specification in vertebrate gastrulation - _id: 05943252-7A3F-11EA-A408-12923DDC885E call_identifier: H2020 grant_number: '851288' name: Design Principles of Branching Morphogenesis - _id: 2693FD8C-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: V00736 name: Tissue material properties in embryonic development publication: Cell publication_identifier: eissn: - '10974172' issn: - '00928674' publication_status: published publisher: Elsevier quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/embryonic-tissue-undergoes-phase-transition/ scopus_import: '1' status: public title: Rigidity percolation uncovers a structural basis for embryonic tissue phase transitions 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: 184 year: '2021' ...