--- _id: '15' abstract: - lang: eng text: Although much is known about the physiological framework of T cell motility, and numerous rate-limiting molecules have been identified through loss-of-function approaches, an integrated functional concept of T cell motility is lacking. Here, we used in vivo precision morphometry together with analysis of cytoskeletal dynamics in vitro to deconstruct the basic mechanisms of T cell migration within lymphatic organs. We show that the contributions of the integrin LFA-1 and the chemokine receptor CCR7 are complementary rather than positioned in a linear pathway, as they are during leukocyte extravasation from the blood vasculature. Our data demonstrate that CCR7 controls cortical actin flows, whereas integrins mediate substrate friction that is sufficient to drive locomotion in the absence of considerable surface adhesions and plasma membrane flux. acknowledged_ssus: - _id: SSU acknowledgement: This work was funded by grants from the European Research Council (ERC StG 281556 and CoG 724373) and the Austrian Science Foundation (FWF) to M.S. and by Swiss National Foundation (SNF) project grants 31003A_135649, 31003A_153457 and CR23I3_156234 to J.V.S. F.G. received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 747687, and J.R. was funded by an EMBO long-term fellowship (ALTF 1396-2014). article_processing_charge: No author: - first_name: Miroslav full_name: Hons, Miroslav id: 4167FE56-F248-11E8-B48F-1D18A9856A87 last_name: Hons orcid: 0000-0002-6625-3348 - first_name: Aglaja full_name: Kopf, Aglaja id: 31DAC7B6-F248-11E8-B48F-1D18A9856A87 last_name: Kopf orcid: 0000-0002-2187-6656 - first_name: Robert full_name: Hauschild, Robert id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87 last_name: Hauschild orcid: 0000-0001-9843-3522 - 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: Florian R full_name: Gärtner, Florian R id: 397A88EE-F248-11E8-B48F-1D18A9856A87 last_name: Gärtner orcid: 0000-0001-6120-3723 - first_name: Jun full_name: Abe, Jun last_name: Abe - first_name: Jörg full_name: Renkawitz, Jörg id: 3F0587C8-F248-11E8-B48F-1D18A9856A87 last_name: Renkawitz orcid: 0000-0003-2856-3369 - first_name: Jens full_name: Stein, Jens last_name: Stein - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 citation: ama: Hons M, Kopf A, Hauschild R, et al. Chemokines and integrins independently tune actin flow and substrate friction during intranodal migration of T cells. Nature Immunology. 2018;19(6):606-616. doi:10.1038/s41590-018-0109-z apa: Hons, M., Kopf, A., Hauschild, R., Leithner, A. F., Gärtner, F. R., Abe, J., … Sixt, M. K. (2018). Chemokines and integrins independently tune actin flow and substrate friction during intranodal migration of T cells. Nature Immunology. Nature Publishing Group. https://doi.org/10.1038/s41590-018-0109-z chicago: Hons, Miroslav, Aglaja Kopf, Robert Hauschild, Alexander F Leithner, Florian R Gärtner, Jun Abe, Jörg Renkawitz, Jens Stein, and Michael K Sixt. “Chemokines and Integrins Independently Tune Actin Flow and Substrate Friction during Intranodal Migration of T Cells.” Nature Immunology. Nature Publishing Group, 2018. https://doi.org/10.1038/s41590-018-0109-z. ieee: M. Hons et al., “Chemokines and integrins independently tune actin flow and substrate friction during intranodal migration of T cells,” Nature Immunology, vol. 19, no. 6. Nature Publishing Group, pp. 606–616, 2018. ista: Hons M, Kopf A, Hauschild R, Leithner AF, Gärtner FR, Abe J, Renkawitz J, Stein J, Sixt MK. 2018. Chemokines and integrins independently tune actin flow and substrate friction during intranodal migration of T cells. Nature Immunology. 19(6), 606–616. mla: Hons, Miroslav, et al. “Chemokines and Integrins Independently Tune Actin Flow and Substrate Friction during Intranodal Migration of T Cells.” Nature Immunology, vol. 19, no. 6, Nature Publishing Group, 2018, pp. 606–16, doi:10.1038/s41590-018-0109-z. short: M. Hons, A. Kopf, R. Hauschild, A.F. Leithner, F.R. Gärtner, J. Abe, J. Renkawitz, J. Stein, M.K. Sixt, Nature Immunology 19 (2018) 606–616. date_created: 2018-12-11T11:44:10Z date_published: 2018-05-18T00:00:00Z date_updated: 2024-03-28T23:30:40Z day: '18' department: - _id: MiSi - _id: Bio doi: 10.1038/s41590-018-0109-z ec_funded: 1 external_id: isi: - '000433041500026' pmid: - '29777221' intvolume: ' 19' isi: 1 issue: '6' language: - iso: eng main_file_link: - open_access: '1' url: https://www.ncbi.nlm.nih.gov/pubmed/29777221 month: '05' oa: 1 oa_version: Published Version page: 606 - 616 pmid: 1 project: - _id: 25FE9508-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '724373' name: Cellular navigation along spatial gradients - _id: 260AA4E2-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '747687' name: Mechanical Adaptation of Lamellipodial Actin Networks in Migrating Cells - _id: 25A48D24-B435-11E9-9278-68D0E5697425 grant_number: ALTF 1396-2014 name: Molecular and system level view of immune cell migration - _id: 25A603A2-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '281556' name: Cytoskeletal force generation and force transduction of migrating leukocytes (EU) publication: Nature Immunology publication_status: published publisher: Nature Publishing Group publist_id: '8040' quality_controlled: '1' related_material: record: - id: '6891' relation: dissertation_contains status: public scopus_import: '1' status: public title: Chemokines and integrins independently tune actin flow and substrate friction during intranodal migration of T cells type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 19 year: '2018' ... --- _id: '569' abstract: - lang: eng text: The actomyosin ring generates force to ingress the cytokinetic cleavage furrow in animal cells, yet its filament organization and the mechanism of contractility is not well understood. We quantified actin filament order in human cells using fluorescence polarization microscopy and found that cleavage furrow ingression initiates by contraction of an equatorial actin network with randomly oriented filaments. The network subsequently gradually reoriented actin filaments along the cell equator. This strictly depended on myosin II activity, suggesting local network reorganization by mechanical forces. Cortical laser microsurgery revealed that during cytokinesis progression, mechanical tension increased substantially along the direction of the cell equator, while the network contracted laterally along the pole-to-pole axis without a detectable increase in tension. Our data suggest that an asymmetric increase in cortical tension promotes filament reorientation along the cytokinetic cleavage furrow, which might have implications for diverse other biological processes involving actomyosin rings. article_number: e30867 author: - first_name: Felix full_name: Spira, Felix last_name: Spira - first_name: Sara full_name: Cuylen Haering, Sara last_name: Cuylen Haering - first_name: Shalin full_name: Mehta, Shalin last_name: Mehta - first_name: Matthias full_name: Samwer, Matthias last_name: Samwer - first_name: Anne full_name: Reversat, Anne id: 35B76592-F248-11E8-B48F-1D18A9856A87 last_name: Reversat orcid: 0000-0003-0666-8928 - first_name: Amitabh full_name: Verma, Amitabh last_name: Verma - first_name: Rudolf full_name: Oldenbourg, Rudolf last_name: Oldenbourg - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 - first_name: Daniel full_name: Gerlich, Daniel last_name: Gerlich citation: ama: Spira F, Cuylen Haering S, Mehta S, et al. Cytokinesis in vertebrate cells initiates by contraction of an equatorial actomyosin network composed of randomly oriented filaments. eLife. 2017;6. doi:10.7554/eLife.30867 apa: Spira, F., Cuylen Haering, S., Mehta, S., Samwer, M., Reversat, A., Verma, A., … Gerlich, D. (2017). Cytokinesis in vertebrate cells initiates by contraction of an equatorial actomyosin network composed of randomly oriented filaments. ELife. eLife Sciences Publications. https://doi.org/10.7554/eLife.30867 chicago: Spira, Felix, Sara Cuylen Haering, Shalin Mehta, Matthias Samwer, Anne Reversat, Amitabh Verma, Rudolf Oldenbourg, Michael K Sixt, and Daniel Gerlich. “Cytokinesis in Vertebrate Cells Initiates by Contraction of an Equatorial Actomyosin Network Composed of Randomly Oriented Filaments.” ELife. eLife Sciences Publications, 2017. https://doi.org/10.7554/eLife.30867. ieee: F. Spira et al., “Cytokinesis in vertebrate cells initiates by contraction of an equatorial actomyosin network composed of randomly oriented filaments,” eLife, vol. 6. eLife Sciences Publications, 2017. ista: Spira F, Cuylen Haering S, Mehta S, Samwer M, Reversat A, Verma A, Oldenbourg R, Sixt MK, Gerlich D. 2017. Cytokinesis in vertebrate cells initiates by contraction of an equatorial actomyosin network composed of randomly oriented filaments. eLife. 6, e30867. mla: Spira, Felix, et al. “Cytokinesis in Vertebrate Cells Initiates by Contraction of an Equatorial Actomyosin Network Composed of Randomly Oriented Filaments.” ELife, vol. 6, e30867, eLife Sciences Publications, 2017, doi:10.7554/eLife.30867. short: F. Spira, S. Cuylen Haering, S. Mehta, M. Samwer, A. Reversat, A. Verma, R. Oldenbourg, M.K. Sixt, D. Gerlich, ELife 6 (2017). date_created: 2018-12-11T11:47:14Z date_published: 2017-11-06T00:00:00Z date_updated: 2023-02-23T12:30:29Z day: '06' ddc: - '570' department: - _id: MiSi doi: 10.7554/eLife.30867 file: - access_level: open_access checksum: ba09c1451153d39e4f4b7cee013e314c content_type: application/pdf creator: system date_created: 2018-12-12T10:10:40Z date_updated: 2020-07-14T12:47:10Z file_id: '4829' file_name: IST-2017-919-v1+1_elife-30867-figures-v1.pdf file_size: 9666973 relation: main_file - access_level: open_access checksum: 01eb51f1d6ad679947415a51c988e137 content_type: application/pdf creator: system date_created: 2018-12-12T10:10:41Z date_updated: 2020-07-14T12:47:10Z file_id: '4830' file_name: IST-2017-919-v1+2_elife-30867-v1.pdf file_size: 5951246 relation: main_file file_date_updated: 2020-07-14T12:47:10Z has_accepted_license: '1' intvolume: ' 6' language: - iso: eng month: '11' oa: 1 oa_version: Published Version publication: eLife publication_identifier: issn: - 2050084X publication_status: published publisher: eLife Sciences Publications publist_id: '7245' pubrep_id: '919' quality_controlled: '1' scopus_import: 1 status: public title: Cytokinesis in vertebrate cells initiates by contraction of an equatorial actomyosin network composed of randomly oriented filaments 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: 6 year: '2017' ... --- _id: '571' abstract: - lang: eng text: Blood platelets are critical for hemostasis and thrombosis and play diverse roles during immune responses. Despite these versatile tasks in mammalian biology, their skills on a cellular level are deemed limited, mainly consisting in rolling, adhesion, and aggregate formation. Here, we identify an unappreciated asset of platelets and show that adherent platelets use adhesion receptors to mechanically probe the adhesive substrate in their local microenvironment. When actomyosin-dependent traction forces overcome substrate resistance, platelets migrate and pile up the adhesive substrate together with any bound particulate material. They use this ability to act as cellular scavengers, scanning the vascular surface for potential invaders and collecting deposited bacteria. Microbe collection by migrating platelets boosts the activity of professional phagocytes, exacerbating inflammatory tissue injury in sepsis. This assigns platelets a central role in innate immune responses and identifies them as potential targets to dampen inflammatory tissue damage in clinical scenarios of severe systemic infection. In addition to their role in thrombosis and hemostasis, platelets can also migrate to sites of infection to help trap bacteria and clear the vascular surface. author: - first_name: Florian R full_name: Gärtner, Florian R id: 397A88EE-F248-11E8-B48F-1D18A9856A87 last_name: Gärtner orcid: 0000-0001-6120-3723 - first_name: Zerkah full_name: Ahmad, Zerkah last_name: Ahmad - first_name: Gerhild full_name: Rosenberger, Gerhild last_name: Rosenberger - first_name: Shuxia full_name: Fan, Shuxia last_name: Fan - first_name: Leo full_name: Nicolai, Leo last_name: Nicolai - first_name: Benjamin full_name: Busch, Benjamin last_name: Busch - first_name: Gökce full_name: Yavuz, Gökce last_name: Yavuz - first_name: Manja full_name: Luckner, Manja last_name: Luckner - first_name: Hellen full_name: Ishikawa Ankerhold, Hellen last_name: Ishikawa Ankerhold - first_name: Roman full_name: Hennel, Roman last_name: Hennel - first_name: Alexandre full_name: Benechet, Alexandre last_name: Benechet - first_name: Michael full_name: Lorenz, Michael last_name: Lorenz - first_name: Sue full_name: Chandraratne, Sue last_name: Chandraratne - first_name: Irene full_name: Schubert, Irene last_name: Schubert - first_name: Sebastian full_name: Helmer, Sebastian last_name: Helmer - first_name: Bianca full_name: Striednig, Bianca last_name: Striednig - first_name: Konstantin full_name: Stark, Konstantin last_name: Stark - first_name: Marek full_name: Janko, Marek last_name: Janko - first_name: Ralph full_name: Böttcher, Ralph last_name: Böttcher - first_name: Admar full_name: Verschoor, Admar last_name: Verschoor - first_name: Catherine full_name: Leon, Catherine last_name: Leon - first_name: Christian full_name: Gachet, Christian last_name: Gachet - first_name: Thomas full_name: Gudermann, Thomas last_name: Gudermann - first_name: Michael full_name: Mederos Y Schnitzler, Michael last_name: Mederos Y Schnitzler - first_name: Zachary full_name: Pincus, Zachary last_name: Pincus - first_name: Matteo full_name: Iannacone, Matteo last_name: Iannacone - first_name: Rainer full_name: Haas, Rainer last_name: Haas - first_name: Gerhard full_name: Wanner, Gerhard last_name: Wanner - first_name: Kirsten full_name: Lauber, Kirsten last_name: Lauber - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 - first_name: Steffen full_name: Massberg, Steffen last_name: Massberg citation: ama: Gärtner FR, Ahmad Z, Rosenberger G, et al. Migrating platelets are mechano scavengers that collect and bundle bacteria. Cell Press. 2017;171(6):1368-1382. doi:10.1016/j.cell.2017.11.001 apa: Gärtner, F. R., Ahmad, Z., Rosenberger, G., Fan, S., Nicolai, L., Busch, B., … Massberg, S. (2017). Migrating platelets are mechano scavengers that collect and bundle bacteria. Cell Press. Cell Press. https://doi.org/10.1016/j.cell.2017.11.001 chicago: Gärtner, Florian R, Zerkah Ahmad, Gerhild Rosenberger, Shuxia Fan, Leo Nicolai, Benjamin Busch, Gökce Yavuz, et al. “Migrating Platelets Are Mechano Scavengers That Collect and Bundle Bacteria.” Cell Press. Cell Press, 2017. https://doi.org/10.1016/j.cell.2017.11.001. ieee: F. R. Gärtner et al., “Migrating platelets are mechano scavengers that collect and bundle bacteria,” Cell Press, vol. 171, no. 6. Cell Press, pp. 1368–1382, 2017. ista: Gärtner FR, Ahmad Z, Rosenberger G, Fan S, Nicolai L, Busch B, Yavuz G, Luckner M, Ishikawa Ankerhold H, Hennel R, Benechet A, Lorenz M, Chandraratne S, Schubert I, Helmer S, Striednig B, Stark K, Janko M, Böttcher R, Verschoor A, Leon C, Gachet C, Gudermann T, Mederos Y Schnitzler M, Pincus Z, Iannacone M, Haas R, Wanner G, Lauber K, Sixt MK, Massberg S. 2017. Migrating platelets are mechano scavengers that collect and bundle bacteria. Cell Press. 171(6), 1368–1382. mla: Gärtner, Florian R., et al. “Migrating Platelets Are Mechano Scavengers That Collect and Bundle Bacteria.” Cell Press, vol. 171, no. 6, Cell Press, 2017, pp. 1368–82, doi:10.1016/j.cell.2017.11.001. short: F.R. Gärtner, Z. Ahmad, G. Rosenberger, S. Fan, L. Nicolai, B. Busch, G. Yavuz, M. Luckner, H. Ishikawa Ankerhold, R. Hennel, A. Benechet, M. Lorenz, S. Chandraratne, I. Schubert, S. Helmer, B. Striednig, K. Stark, M. Janko, R. Böttcher, A. Verschoor, C. Leon, C. Gachet, T. Gudermann, M. Mederos Y Schnitzler, Z. Pincus, M. Iannacone, R. Haas, G. Wanner, K. Lauber, M.K. Sixt, S. Massberg, Cell Press 171 (2017) 1368–1382. date_created: 2018-12-11T11:47:15Z date_published: 2017-11-30T00:00:00Z date_updated: 2021-01-12T08:03:15Z day: '30' department: - _id: MiSi doi: 10.1016/j.cell.2017.11.001 ec_funded: 1 intvolume: ' 171' issue: '6' language: - iso: eng month: '11' oa_version: None page: 1368 - 1382 project: - _id: 260AA4E2-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '747687' name: Mechanical Adaptation of Lamellipodial Actin Networks in Migrating Cells publication: Cell Press publication_identifier: issn: - '00928674' publication_status: published publisher: Cell Press publist_id: '7243' quality_controlled: '1' scopus_import: 1 status: public title: Migrating platelets are mechano scavengers that collect and bundle bacteria type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 171 year: '2017' ... --- _id: '659' abstract: - lang: eng text: Migration frequently involves Rac-mediated protrusion of lamellipodia, formed by Arp2/3 complex-dependent branching thought to be crucial for force generation and stability of these networks. The formins FMNL2 and FMNL3 are Cdc42 effectors targeting to the lamellipodium tip and shown here to nucleate and elongate actin filaments with complementary activities in vitro. In migrating B16-F1 melanoma cells, both formins contribute to the velocity of lamellipodium protrusion. Loss of FMNL2/3 function in melanoma cells and fibroblasts reduces lamellipodial width, actin filament density and -bundling, without changing patterns of Arp2/3 complex incorporation. Strikingly, in melanoma cells, FMNL2/3 gene inactivation almost completely abolishes protrusion forces exerted by lamellipodia and modifies their ultrastructural organization. Consistently, CRISPR/Cas-mediated depletion of FMNL2/3 in fibroblasts reduces both migration and capability of cells to move against viscous media. Together, we conclude that force generation in lamellipodia strongly depends on FMNL formin activity, operating in addition to Arp2/3 complex-dependent filament branching. article_number: '14832' article_processing_charge: No author: - first_name: Frieda full_name: Kage, Frieda last_name: Kage - first_name: Moritz full_name: Winterhoff, Moritz last_name: Winterhoff - first_name: Vanessa full_name: Dimchev, Vanessa last_name: Dimchev - first_name: Jan full_name: Müller, Jan id: AD07FDB4-0F61-11EA-8158-C4CC64CEAA8D last_name: Müller - first_name: Tobias full_name: Thalheim, Tobias last_name: Thalheim - first_name: Anika full_name: Freise, Anika last_name: Freise - first_name: Stefan full_name: Brühmann, Stefan last_name: Brühmann - first_name: Jana full_name: Kollasser, Jana last_name: Kollasser - first_name: Jennifer full_name: Block, Jennifer last_name: Block - first_name: Georgi A full_name: Dimchev, Georgi A last_name: Dimchev - first_name: Matthias full_name: Geyer, Matthias last_name: Geyer - first_name: Hams full_name: Schnittler, Hams last_name: Schnittler - first_name: Cord full_name: Brakebusch, Cord last_name: Brakebusch - first_name: Theresia full_name: Stradal, Theresia last_name: Stradal - first_name: Marie full_name: Carlier, Marie last_name: Carlier - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 - first_name: Josef full_name: Käs, Josef last_name: Käs - first_name: Jan full_name: Faix, Jan last_name: Faix - first_name: Klemens full_name: Rottner, Klemens last_name: Rottner citation: ama: Kage F, Winterhoff M, Dimchev V, et al. FMNL formins boost lamellipodial force generation. Nature Communications. 2017;8. doi:10.1038/ncomms14832 apa: Kage, F., Winterhoff, M., Dimchev, V., Müller, J., Thalheim, T., Freise, A., … Rottner, K. (2017). FMNL formins boost lamellipodial force generation. Nature Communications. Nature Publishing Group. https://doi.org/10.1038/ncomms14832 chicago: Kage, Frieda, Moritz Winterhoff, Vanessa Dimchev, Jan Müller, Tobias Thalheim, Anika Freise, Stefan Brühmann, et al. “FMNL Formins Boost Lamellipodial Force Generation.” Nature Communications. Nature Publishing Group, 2017. https://doi.org/10.1038/ncomms14832. ieee: F. Kage et al., “FMNL formins boost lamellipodial force generation,” Nature Communications, vol. 8. Nature Publishing Group, 2017. ista: Kage F, Winterhoff M, Dimchev V, Müller J, Thalheim T, Freise A, Brühmann S, Kollasser J, Block J, Dimchev GA, Geyer M, Schnittler H, Brakebusch C, Stradal T, Carlier M, Sixt MK, Käs J, Faix J, Rottner K. 2017. FMNL formins boost lamellipodial force generation. Nature Communications. 8, 14832. mla: Kage, Frieda, et al. “FMNL Formins Boost Lamellipodial Force Generation.” Nature Communications, vol. 8, 14832, Nature Publishing Group, 2017, doi:10.1038/ncomms14832. short: F. Kage, M. Winterhoff, V. Dimchev, J. Müller, T. Thalheim, A. Freise, S. Brühmann, J. Kollasser, J. Block, G.A. Dimchev, M. Geyer, H. Schnittler, C. Brakebusch, T. Stradal, M. Carlier, M.K. Sixt, J. Käs, J. Faix, K. Rottner, Nature Communications 8 (2017). date_created: 2018-12-11T11:47:46Z date_published: 2017-03-22T00:00:00Z date_updated: 2021-01-12T08:08:06Z day: '22' ddc: - '570' department: - _id: MiSi doi: 10.1038/ncomms14832 file: - access_level: open_access checksum: dae30190291c3630e8102d8714a8d23e content_type: application/pdf creator: system date_created: 2018-12-12T10:14:21Z date_updated: 2020-07-14T12:47:34Z file_id: '5072' file_name: IST-2017-902-v1+1_Kage_et_al-2017-Nature_Communications.pdf file_size: 9523746 relation: main_file file_date_updated: 2020-07-14T12:47:34Z has_accepted_license: '1' intvolume: ' 8' language: - iso: eng month: '03' oa: 1 oa_version: Published Version publication: Nature Communications publication_identifier: issn: - '20411723' publication_status: published publisher: Nature Publishing Group publist_id: '7075' pubrep_id: '902' quality_controlled: '1' scopus_import: 1 status: public title: FMNL formins boost lamellipodial force generation 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: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 8 year: '2017' ... --- _id: '668' abstract: - lang: eng text: Macrophage filopodia, finger-like membrane protrusions, were first implicated in phagocytosis more than 100 years ago, but little is still known about the involvement of these actin-dependent structures in particle clearance. Using spinning disk confocal microscopy to image filopodial dynamics in mouse resident Lifeact-EGFP macrophages, we show that filopodia, or filopodia-like structures, support pathogen clearance by multiple means. Filopodia supported the phagocytic uptake of bacterial (Escherichia coli) particles by (i) capturing along the filopodial shaft and surfing toward the cell body, the most common mode of capture; (ii) capturing via the tip followed by retraction; (iii) combinations of surfing and retraction; or (iv) sweeping actions. In addition, filopodia supported the uptake of zymosan (Saccharomyces cerevisiae) particles by (i) providing fixation, (ii) capturing at the tip and filopodia-guided actin anterograde flow with phagocytic cup formation, and (iii) the rapid growth of new protrusions. To explore the role of filopodia-inducing Cdc42, we generated myeloid-restricted Cdc42 knock-out mice. Cdc42-deficient macrophages exhibited rapid phagocytic cup kinetics, but reduced particle clearance, which could be explained by the marked rounded-up morphology of these cells. Macrophages lacking Myo10, thought to act downstream of Cdc42, had normal morphology, motility, and phagocytic cup formation, but displayed markedly reduced filopodia formation. In conclusion, live-cell imaging revealed multiple mechanisms involving macrophage filopodia in particle capture and engulfment. Cdc42 is not critical for filopodia or phagocytic cup formation, but plays a key role in driving macrophage lamellipodial spreading. article_type: original author: - first_name: Markus full_name: Horsthemke, Markus last_name: Horsthemke - first_name: Anne full_name: Bachg, Anne last_name: Bachg - first_name: Katharina full_name: Groll, Katharina last_name: Groll - first_name: Sven full_name: Moyzio, Sven last_name: Moyzio - first_name: Barbara full_name: Müther, Barbara last_name: Müther - first_name: Sandra full_name: Hemkemeyer, Sandra last_name: Hemkemeyer - first_name: Roland full_name: Wedlich Söldner, Roland last_name: Wedlich Söldner - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 - first_name: Sebastian full_name: Tacke, Sebastian last_name: Tacke - first_name: Martin full_name: Bähler, Martin last_name: Bähler - first_name: Peter full_name: Hanley, Peter last_name: Hanley citation: ama: Horsthemke M, Bachg A, Groll K, et al. Multiple roles of filopodial dynamics in particle capture and phagocytosis and phenotypes of Cdc42 and Myo10 deletion. Journal of Biological Chemistry. 2017;292(17):7258-7273. doi:10.1074/jbc.M116.766923 apa: Horsthemke, M., Bachg, A., Groll, K., Moyzio, S., Müther, B., Hemkemeyer, S., … Hanley, P. (2017). Multiple roles of filopodial dynamics in particle capture and phagocytosis and phenotypes of Cdc42 and Myo10 deletion. Journal of Biological Chemistry. American Society for Biochemistry and Molecular Biology. https://doi.org/10.1074/jbc.M116.766923 chicago: Horsthemke, Markus, Anne Bachg, Katharina Groll, Sven Moyzio, Barbara Müther, Sandra Hemkemeyer, Roland Wedlich Söldner, et al. “Multiple Roles of Filopodial Dynamics in Particle Capture and Phagocytosis and Phenotypes of Cdc42 and Myo10 Deletion.” Journal of Biological Chemistry. American Society for Biochemistry and Molecular Biology, 2017. https://doi.org/10.1074/jbc.M116.766923. ieee: M. Horsthemke et al., “Multiple roles of filopodial dynamics in particle capture and phagocytosis and phenotypes of Cdc42 and Myo10 deletion,” Journal of Biological Chemistry, vol. 292, no. 17. American Society for Biochemistry and Molecular Biology, pp. 7258–7273, 2017. ista: Horsthemke M, Bachg A, Groll K, Moyzio S, Müther B, Hemkemeyer S, Wedlich Söldner R, Sixt MK, Tacke S, Bähler M, Hanley P. 2017. Multiple roles of filopodial dynamics in particle capture and phagocytosis and phenotypes of Cdc42 and Myo10 deletion. Journal of Biological Chemistry. 292(17), 7258–7273. mla: Horsthemke, Markus, et al. “Multiple Roles of Filopodial Dynamics in Particle Capture and Phagocytosis and Phenotypes of Cdc42 and Myo10 Deletion.” Journal of Biological Chemistry, vol. 292, no. 17, American Society for Biochemistry and Molecular Biology, 2017, pp. 7258–73, doi:10.1074/jbc.M116.766923. short: M. Horsthemke, A. Bachg, K. Groll, S. Moyzio, B. Müther, S. Hemkemeyer, R. Wedlich Söldner, M.K. Sixt, S. Tacke, M. Bähler, P. Hanley, Journal of Biological Chemistry 292 (2017) 7258–7273. date_created: 2018-12-11T11:47:49Z date_published: 2017-04-28T00:00:00Z date_updated: 2021-01-12T08:08:34Z day: '28' ddc: - '570' department: - _id: MiSi doi: 10.1074/jbc.M116.766923 file: - access_level: open_access checksum: d488162874326a4bb056065fa549dc4a content_type: application/pdf creator: dernst date_created: 2019-10-24T15:25:42Z date_updated: 2020-07-14T12:47:37Z file_id: '6971' file_name: 2017_JBC_Horsthemke.pdf file_size: 5647880 relation: main_file file_date_updated: 2020-07-14T12:47:37Z has_accepted_license: '1' intvolume: ' 292' issue: '17' language: - iso: eng month: '04' oa: 1 oa_version: Published Version page: 7258 - 7273 publication: Journal of Biological Chemistry publication_identifier: issn: - '00219258' publication_status: published publisher: American Society for Biochemistry and Molecular Biology publist_id: '7059' quality_controlled: '1' scopus_import: 1 status: public title: Multiple roles of filopodial dynamics in particle capture and phagocytosis and phenotypes of Cdc42 and Myo10 deletion type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 292 year: '2017' ... --- _id: '672' abstract: - lang: eng text: Trafficking cells frequently transmigrate through epithelial and endothelial monolayers. How monolayers cooperate with the penetrating cells to support their transit is poorly understood. We studied dendritic cell (DC) entry into lymphatic capillaries as a model system for transendothelial migration. We find that the chemokine CCL21, which is the decisive guidance cue for intravasation, mainly localizes in the trans-Golgi network and intracellular vesicles of lymphatic endothelial cells. Upon DC transmigration, these Golgi deposits disperse and CCL21 becomes extracellularly enriched at the sites of endothelial cell-cell junctions. When we reconstitute the transmigration process in vitro, we find that secretion of CCL21-positive vesicles is triggered by a DC contact-induced calcium signal, and selective calcium chelation in lymphatic endothelium attenuates transmigration. Altogether, our data demonstrate a chemokine-mediated feedback between DCs and lymphatic endothelium, which facilitates transendothelial migration. article_processing_charge: Yes author: - first_name: Kari full_name: Vaahtomeri, Kari id: 368EE576-F248-11E8-B48F-1D18A9856A87 last_name: Vaahtomeri orcid: 0000-0001-7829-3518 - first_name: Markus full_name: Brown, Markus id: 3DAB9AFC-F248-11E8-B48F-1D18A9856A87 last_name: Brown - first_name: Robert full_name: Hauschild, Robert id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87 last_name: Hauschild orcid: 0000-0001-9843-3522 - first_name: Ingrid full_name: De Vries, Ingrid id: 4C7D837E-F248-11E8-B48F-1D18A9856A87 last_name: De Vries - first_name: Alexander F full_name: Leithner, Alexander F id: 3B1B77E4-F248-11E8-B48F-1D18A9856A87 last_name: Leithner - first_name: Matthias full_name: Mehling, Matthias id: 3C23B994-F248-11E8-B48F-1D18A9856A87 last_name: Mehling orcid: 0000-0001-8599-1226 - first_name: Walter full_name: Kaufmann, Walter id: 3F99E422-F248-11E8-B48F-1D18A9856A87 last_name: Kaufmann orcid: 0000-0001-9735-5315 - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 citation: ama: Vaahtomeri K, Brown M, Hauschild R, et al. Locally triggered release of the chemokine CCL21 promotes dendritic cell transmigration across lymphatic endothelia. Cell Reports. 2017;19(5):902-909. doi:10.1016/j.celrep.2017.04.027 apa: Vaahtomeri, K., Brown, M., Hauschild, R., de Vries, I., Leithner, A. F., Mehling, M., … Sixt, M. K. (2017). Locally triggered release of the chemokine CCL21 promotes dendritic cell transmigration across lymphatic endothelia. Cell Reports. Cell Press. https://doi.org/10.1016/j.celrep.2017.04.027 chicago: Vaahtomeri, Kari, Markus Brown, Robert Hauschild, Ingrid de Vries, Alexander F Leithner, Matthias Mehling, Walter Kaufmann, and Michael K Sixt. “Locally Triggered Release of the Chemokine CCL21 Promotes Dendritic Cell Transmigration across Lymphatic Endothelia.” Cell Reports. Cell Press, 2017. https://doi.org/10.1016/j.celrep.2017.04.027. ieee: K. Vaahtomeri et al., “Locally triggered release of the chemokine CCL21 promotes dendritic cell transmigration across lymphatic endothelia,” Cell Reports, vol. 19, no. 5. Cell Press, pp. 902–909, 2017. ista: Vaahtomeri K, Brown M, Hauschild R, de Vries I, Leithner AF, Mehling M, Kaufmann W, Sixt MK. 2017. Locally triggered release of the chemokine CCL21 promotes dendritic cell transmigration across lymphatic endothelia. Cell Reports. 19(5), 902–909. mla: Vaahtomeri, Kari, et al. “Locally Triggered Release of the Chemokine CCL21 Promotes Dendritic Cell Transmigration across Lymphatic Endothelia.” Cell Reports, vol. 19, no. 5, Cell Press, 2017, pp. 902–09, doi:10.1016/j.celrep.2017.04.027. short: K. Vaahtomeri, M. Brown, R. Hauschild, I. de Vries, A.F. Leithner, M. Mehling, W. Kaufmann, M.K. Sixt, Cell Reports 19 (2017) 902–909. date_created: 2018-12-11T11:47:50Z date_published: 2017-05-02T00:00:00Z date_updated: 2023-02-23T12:50:09Z day: '02' ddc: - '570' department: - _id: MiSi - _id: Bio - _id: EM-Fac doi: 10.1016/j.celrep.2017.04.027 ec_funded: 1 file: - access_level: open_access checksum: 8fdddaab1f1d76a6ec9ca94dcb6b07a2 content_type: application/pdf creator: system date_created: 2018-12-12T10:14:54Z date_updated: 2020-07-14T12:47:38Z file_id: '5109' file_name: IST-2017-900-v1+1_1-s2.0-S2211124717305211-main.pdf file_size: 2248814 relation: main_file file_date_updated: 2020-07-14T12:47:38Z has_accepted_license: '1' intvolume: ' 19' issue: '5' language: - iso: eng month: '05' oa: 1 oa_version: Published Version page: 902 - 909 project: - _id: 25A603A2-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '281556' name: Cytoskeletal force generation and force transduction of migrating leukocytes (EU) - _id: 25A8E5EA-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Y 564-B12 name: Cytoskeletal force generation and transduction of leukocytes (FWF) publication: Cell Reports publication_identifier: issn: - '22111247' publication_status: published publisher: Cell Press publist_id: '7052' pubrep_id: '900' quality_controlled: '1' scopus_import: 1 status: public title: Locally triggered release of the chemokine CCL21 promotes dendritic cell transmigration across lymphatic endothelia 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: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 19 year: '2017' ... --- _id: '674' abstract: - lang: eng text: Navigation of cells along gradients of guidance cues is a determining step in many developmental and immunological processes. Gradients can either be soluble or immobilized to tissues as demonstrated for the haptotactic migration of dendritic cells (DCs) toward higher concentrations of immobilized chemokine CCL21. To elucidate how gradient characteristics govern cellular response patterns, we here introduce an in vitro system allowing to track migratory responses of DCs to precisely controlled immobilized gradients of CCL21. We find that haptotactic sensing depends on the absolute CCL21 concentration and local steepness of the gradient, consistent with a scenario where DC directionality is governed by the signal-to-noise ratio of CCL21 binding to the receptor CCR7. We find that the conditions for optimal DC guidance are perfectly provided by the CCL21 gradients we measure in vivo. Furthermore, we find that CCR7 signal termination by the G-protein-coupled receptor kinase 6 (GRK6) is crucial for haptotactic but dispensable for chemotactic CCL21 gradient sensing in vitro and confirm those observations in vivo. These findings suggest that stable, tissue-bound CCL21 gradients as sustainable “roads” ensure optimal guidance in vivo. author: - first_name: Jan full_name: Schwarz, Jan id: 346C1EC6-F248-11E8-B48F-1D18A9856A87 last_name: Schwarz - first_name: Veronika full_name: Bierbaum, Veronika id: 3FD04378-F248-11E8-B48F-1D18A9856A87 last_name: Bierbaum - first_name: Kari full_name: Vaahtomeri, Kari id: 368EE576-F248-11E8-B48F-1D18A9856A87 last_name: Vaahtomeri orcid: 0000-0001-7829-3518 - first_name: Robert full_name: Hauschild, Robert id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87 last_name: Hauschild orcid: 0000-0001-9843-3522 - first_name: Markus full_name: Brown, Markus id: 3DAB9AFC-F248-11E8-B48F-1D18A9856A87 last_name: Brown - first_name: Ingrid full_name: De Vries, Ingrid id: 4C7D837E-F248-11E8-B48F-1D18A9856A87 last_name: De Vries - first_name: Alexander F full_name: Leithner, Alexander F id: 3B1B77E4-F248-11E8-B48F-1D18A9856A87 last_name: Leithner - first_name: Anne full_name: Reversat, Anne id: 35B76592-F248-11E8-B48F-1D18A9856A87 last_name: Reversat orcid: 0000-0003-0666-8928 - first_name: Jack full_name: Merrin, Jack id: 4515C308-F248-11E8-B48F-1D18A9856A87 last_name: Merrin orcid: 0000-0001-5145-4609 - first_name: Teresa full_name: Tarrant, Teresa last_name: Tarrant - first_name: Tobias full_name: Bollenbach, Tobias id: 3E6DB97A-F248-11E8-B48F-1D18A9856A87 last_name: Bollenbach orcid: 0000-0003-4398-476X - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 citation: ama: Schwarz J, Bierbaum V, Vaahtomeri K, et al. Dendritic cells interpret haptotactic chemokine gradients in a manner governed by signal to noise ratio and dependent on GRK6. Current Biology. 2017;27(9):1314-1325. doi:10.1016/j.cub.2017.04.004 apa: Schwarz, J., Bierbaum, V., Vaahtomeri, K., Hauschild, R., Brown, M., de Vries, I., … Sixt, M. K. (2017). Dendritic cells interpret haptotactic chemokine gradients in a manner governed by signal to noise ratio and dependent on GRK6. Current Biology. Cell Press. https://doi.org/10.1016/j.cub.2017.04.004 chicago: Schwarz, Jan, Veronika Bierbaum, Kari Vaahtomeri, Robert Hauschild, Markus Brown, Ingrid de Vries, Alexander F Leithner, et al. “Dendritic Cells Interpret Haptotactic Chemokine Gradients in a Manner Governed by Signal to Noise Ratio and Dependent on GRK6.” Current Biology. Cell Press, 2017. https://doi.org/10.1016/j.cub.2017.04.004. ieee: J. Schwarz et al., “Dendritic cells interpret haptotactic chemokine gradients in a manner governed by signal to noise ratio and dependent on GRK6,” Current Biology, vol. 27, no. 9. Cell Press, pp. 1314–1325, 2017. ista: Schwarz J, Bierbaum V, Vaahtomeri K, Hauschild R, Brown M, de Vries I, Leithner AF, Reversat A, Merrin J, Tarrant T, Bollenbach MT, Sixt MK. 2017. Dendritic cells interpret haptotactic chemokine gradients in a manner governed by signal to noise ratio and dependent on GRK6. Current Biology. 27(9), 1314–1325. mla: Schwarz, Jan, et al. “Dendritic Cells Interpret Haptotactic Chemokine Gradients in a Manner Governed by Signal to Noise Ratio and Dependent on GRK6.” Current Biology, vol. 27, no. 9, Cell Press, 2017, pp. 1314–25, doi:10.1016/j.cub.2017.04.004. short: J. Schwarz, V. Bierbaum, K. Vaahtomeri, R. Hauschild, M. Brown, I. de Vries, A.F. Leithner, A. Reversat, J. Merrin, T. Tarrant, M.T. Bollenbach, M.K. Sixt, Current Biology 27 (2017) 1314–1325. date_created: 2018-12-11T11:47:51Z date_published: 2017-05-09T00:00:00Z date_updated: 2023-02-23T12:50:44Z day: '09' department: - _id: MiSi - _id: Bio - _id: NanoFab doi: 10.1016/j.cub.2017.04.004 ec_funded: 1 intvolume: ' 27' issue: '9' language: - iso: eng month: '05' oa_version: None page: 1314 - 1325 project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme - _id: 25A8E5EA-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Y 564-B12 name: Cytoskeletal force generation and transduction of leukocytes (FWF) publication: Current Biology publication_identifier: issn: - '09609822' publication_status: published publisher: Cell Press publist_id: '7050' quality_controlled: '1' scopus_import: 1 status: public title: Dendritic cells interpret haptotactic chemokine gradients in a manner governed by signal to noise ratio and dependent on GRK6 type: journal_article user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87 volume: 27 year: '2017' ... --- _id: '677' abstract: - lang: eng text: The INO80 complex (INO80-C) is an evolutionarily conserved nucleosome remodeler that acts in transcription, replication, and genome stability. It is required for resistance against genotoxic agents and is involved in the repair of DNA double-strand breaks (DSBs) by homologous recombination (HR). However, the causes of the HR defect in INO80-C mutant cells are controversial. Here, we unite previous findings using a system to study HR with high spatial resolution in budding yeast. We find that INO80-C has at least two distinct functions during HR—DNA end resection and presynaptic filament formation. Importantly, the second function is linked to the histone variant H2A.Z. In the absence of H2A.Z, presynaptic filament formation and HR are restored in INO80-C-deficient mutants, suggesting that presynaptic filament formation is the crucial INO80-C function during HR. author: - first_name: Claudio full_name: Lademann, Claudio last_name: Lademann - first_name: Jörg full_name: Renkawitz, Jörg id: 3F0587C8-F248-11E8-B48F-1D18A9856A87 last_name: Renkawitz orcid: 0000-0003-2856-3369 - first_name: Boris full_name: Pfander, Boris last_name: Pfander - first_name: Stefan full_name: Jentsch, Stefan last_name: Jentsch citation: ama: Lademann C, Renkawitz J, Pfander B, Jentsch S. The INO80 complex removes H2A.Z to promote presynaptic filament formation during homologous recombination. Cell Reports. 2017;19(7):1294-1303. doi:10.1016/j.celrep.2017.04.051 apa: Lademann, C., Renkawitz, J., Pfander, B., & Jentsch, S. (2017). The INO80 complex removes H2A.Z to promote presynaptic filament formation during homologous recombination. Cell Reports. Cell Press. https://doi.org/10.1016/j.celrep.2017.04.051 chicago: Lademann, Claudio, Jörg Renkawitz, Boris Pfander, and Stefan Jentsch. “The INO80 Complex Removes H2A.Z to Promote Presynaptic Filament Formation during Homologous Recombination.” Cell Reports. Cell Press, 2017. https://doi.org/10.1016/j.celrep.2017.04.051. ieee: C. Lademann, J. Renkawitz, B. Pfander, and S. Jentsch, “The INO80 complex removes H2A.Z to promote presynaptic filament formation during homologous recombination,” Cell Reports, vol. 19, no. 7. Cell Press, pp. 1294–1303, 2017. ista: Lademann C, Renkawitz J, Pfander B, Jentsch S. 2017. The INO80 complex removes H2A.Z to promote presynaptic filament formation during homologous recombination. Cell Reports. 19(7), 1294–1303. mla: Lademann, Claudio, et al. “The INO80 Complex Removes H2A.Z to Promote Presynaptic Filament Formation during Homologous Recombination.” Cell Reports, vol. 19, no. 7, Cell Press, 2017, pp. 1294–303, doi:10.1016/j.celrep.2017.04.051. short: C. Lademann, J. Renkawitz, B. Pfander, S. Jentsch, Cell Reports 19 (2017) 1294–1303. date_created: 2018-12-11T11:47:52Z date_published: 2017-05-16T00:00:00Z date_updated: 2021-01-12T08:08:57Z day: '16' ddc: - '570' department: - _id: MiSi doi: 10.1016/j.celrep.2017.04.051 file: - access_level: open_access checksum: efc7287d9c6354983cb151880e9ad72a content_type: application/pdf creator: system date_created: 2018-12-12T10:15:48Z date_updated: 2020-07-14T12:47:40Z file_id: '5171' file_name: IST-2017-899-v1+1_1-s2.0-S2211124717305454-main.pdf file_size: 3005610 relation: main_file file_date_updated: 2020-07-14T12:47:40Z has_accepted_license: '1' intvolume: ' 19' issue: '7' language: - iso: eng month: '05' oa: 1 oa_version: Published Version page: 1294 - 1303 publication: Cell Reports publication_identifier: issn: - '22111247' publication_status: published publisher: Cell Press publist_id: '7046' pubrep_id: '899' quality_controlled: '1' scopus_import: 1 status: public title: The INO80 complex removes H2A.Z to promote presynaptic filament formation during homologous recombination 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: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 19 year: '2017' ... --- _id: '694' abstract: - lang: eng text: A change regarding the extent of adhesion - hereafter referred to as adhesion plasticity - between adhesive and less-adhesive states of mammalian cells is important for their behavior. To investigate adhesion plasticity, we have selected a stable isogenic subpopulation of human MDA-MB-468 breast carcinoma cells growing in suspension. These suspension cells are unable to re-adhere to various matrices or to contract three-dimensional collagen lattices. By using transcriptome analysis, we identified the focal adhesion protein tensin3 (Tns3) as a determinant of adhesion plasticity. Tns3 is strongly reduced at mRNA and protein levels in suspension cells. Furthermore, by transiently challenging breast cancer cells to grow under non-adherent conditions markedly reduces Tns3 protein expression, which is regained upon re-adhesion. Stable knockdown of Tns3 in parental MDA-MB-468 cells results in defective adhesion, spreading and migration. Tns3-knockdown cells display impaired structure and dynamics of focal adhesion complexes as determined by immunostaining. Restoration of Tns3 protein expression in suspension cells partially rescues adhesion and focal contact composition. Our work identifies Tns3 as a crucial focal adhesion component regulated by, and functionally contributing to, the switch between adhesive and non-adhesive states in MDA-MB-468 cancer cells. article_type: original author: - first_name: Astrid full_name: Veß, Astrid last_name: Veß - first_name: Ulrich full_name: Blache, Ulrich last_name: Blache - first_name: Laura full_name: Leitner, Laura last_name: Leitner - first_name: Angela full_name: Kurz, Angela last_name: Kurz - first_name: Anja full_name: Ehrenpfordt, Anja last_name: Ehrenpfordt - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 - first_name: Guido full_name: Posern, Guido last_name: Posern citation: ama: Veß A, Blache U, Leitner L, et al. A dual phenotype of MDA MB 468 cancer cells reveals mutual regulation of tensin3 and adhesion plasticity. Journal of Cell Science. 2017;130(13):2172-2184. doi:10.1242/jcs.200899 apa: Veß, A., Blache, U., Leitner, L., Kurz, A., Ehrenpfordt, A., Sixt, M. K., & Posern, G. (2017). A dual phenotype of MDA MB 468 cancer cells reveals mutual regulation of tensin3 and adhesion plasticity. Journal of Cell Science. Company of Biologists. https://doi.org/10.1242/jcs.200899 chicago: Veß, Astrid, Ulrich Blache, Laura Leitner, Angela Kurz, Anja Ehrenpfordt, Michael K Sixt, and Guido Posern. “A Dual Phenotype of MDA MB 468 Cancer Cells Reveals Mutual Regulation of Tensin3 and Adhesion Plasticity.” Journal of Cell Science. Company of Biologists, 2017. https://doi.org/10.1242/jcs.200899. ieee: A. Veß et al., “A dual phenotype of MDA MB 468 cancer cells reveals mutual regulation of tensin3 and adhesion plasticity,” Journal of Cell Science, vol. 130, no. 13. Company of Biologists, pp. 2172–2184, 2017. ista: Veß A, Blache U, Leitner L, Kurz A, Ehrenpfordt A, Sixt MK, Posern G. 2017. A dual phenotype of MDA MB 468 cancer cells reveals mutual regulation of tensin3 and adhesion plasticity. Journal of Cell Science. 130(13), 2172–2184. mla: Veß, Astrid, et al. “A Dual Phenotype of MDA MB 468 Cancer Cells Reveals Mutual Regulation of Tensin3 and Adhesion Plasticity.” Journal of Cell Science, vol. 130, no. 13, Company of Biologists, 2017, pp. 2172–84, doi:10.1242/jcs.200899. short: A. Veß, U. Blache, L. Leitner, A. Kurz, A. Ehrenpfordt, M.K. Sixt, G. Posern, Journal of Cell Science 130 (2017) 2172–2184. date_created: 2018-12-11T11:47:58Z date_published: 2017-07-01T00:00:00Z date_updated: 2021-01-12T08:09:41Z day: '01' ddc: - '570' department: - _id: MiSi doi: 10.1242/jcs.200899 external_id: pmid: - '28515231' file: - access_level: open_access checksum: 42c81a0a4fc3128883b391c3af3f74bc content_type: application/pdf creator: dernst date_created: 2019-10-24T09:43:56Z date_updated: 2020-07-14T12:47:45Z file_id: '6966' file_name: 2017_CellScience_Vess.pdf file_size: 10847596 relation: main_file file_date_updated: 2020-07-14T12:47:45Z has_accepted_license: '1' intvolume: ' 130' issue: '13' language: - iso: eng month: '07' oa: 1 oa_version: Published Version page: 2172 - 2184 pmid: 1 publication: Journal of Cell Science publication_identifier: issn: - '00219533' publication_status: published publisher: Company of Biologists publist_id: '7008' quality_controlled: '1' scopus_import: 1 status: public title: A dual phenotype of MDA MB 468 cancer cells reveals mutual regulation of tensin3 and adhesion plasticity type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 130 year: '2017' ... --- _id: '1161' abstract: - lang: eng text: Coordinated changes of cell shape are often the result of the excitable, wave-like dynamics of the actin cytoskeleton. New work shows that, in migrating cells, protrusion waves arise from mechanochemical crosstalk between adhesion sites, membrane tension and the actin protrusive machinery. article_processing_charge: No author: - first_name: Jan full_name: Müller, Jan id: AD07FDB4-0F61-11EA-8158-C4CC64CEAA8D last_name: Müller - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 citation: ama: 'Müller J, Sixt MK. Cell migration: Making the waves. Current Biology. 2017;27(1):R24-R25. doi:10.1016/j.cub.2016.11.035' apa: 'Müller, J., & Sixt, M. K. (2017). Cell migration: Making the waves. Current Biology. Cell Press. https://doi.org/10.1016/j.cub.2016.11.035' chicago: 'Müller, Jan, and Michael K Sixt. “Cell Migration: Making the Waves.” Current Biology. Cell Press, 2017. https://doi.org/10.1016/j.cub.2016.11.035.' ieee: 'J. Müller and M. K. Sixt, “Cell migration: Making the waves,” Current Biology, vol. 27, no. 1. Cell Press, pp. R24–R25, 2017.' ista: 'Müller J, Sixt MK. 2017. Cell migration: Making the waves. Current Biology. 27(1), R24–R25.' mla: 'Müller, Jan, and Michael K. Sixt. “Cell Migration: Making the Waves.” Current Biology, vol. 27, no. 1, Cell Press, 2017, pp. R24–25, doi:10.1016/j.cub.2016.11.035.' short: J. Müller, M.K. Sixt, Current Biology 27 (2017) R24–R25. date_created: 2018-12-11T11:50:29Z date_published: 2017-01-09T00:00:00Z date_updated: 2023-09-20T11:28:19Z day: '09' department: - _id: MiSi doi: 10.1016/j.cub.2016.11.035 external_id: isi: - '000391902500010' intvolume: ' 27' isi: 1 issue: '1' language: - iso: eng month: '01' oa_version: None page: R24 - R25 publication: Current Biology publication_identifier: issn: - '09609822' publication_status: published publisher: Cell Press publist_id: '6197' quality_controlled: '1' scopus_import: '1' status: public title: 'Cell migration: Making the waves' type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 27 year: '2017' ... --- _id: '727' abstract: - lang: eng text: 'Actin filaments polymerizing against membranes power endocytosis, vesicular traffic, and cell motility. In vitro reconstitution studies suggest that the structure and the dynamics of actin networks respond to mechanical forces. We demonstrate that lamellipodial actin of migrating cells responds to mechanical load when membrane tension is modulated. In a steady state, migrating cell filaments assume the canonical dendritic geometry, defined by Arp2/3-generated 70° branch points. Increased tension triggers a dense network with a broadened range of angles, whereas decreased tension causes a shift to a sparse configuration dominated by filaments growing perpendicularly to the plasma membrane. We show that these responses emerge from the geometry of branched actin: when load per filament decreases, elongation speed increases and perpendicular filaments gradually outcompete others because they polymerize the shortest distance to the membrane, where they are protected from capping. This network-intrinsic geometrical adaptation mechanism tunes protrusive force in response to mechanical load.' acknowledged_ssus: - _id: ScienComp article_processing_charge: No author: - first_name: Jan full_name: Mueller, Jan last_name: Mueller - first_name: Gregory full_name: Szep, Gregory id: 4BFB7762-F248-11E8-B48F-1D18A9856A87 last_name: Szep - first_name: Maria full_name: Nemethova, Maria id: 34E27F1C-F248-11E8-B48F-1D18A9856A87 last_name: Nemethova - first_name: Ingrid full_name: De Vries, Ingrid id: 4C7D837E-F248-11E8-B48F-1D18A9856A87 last_name: De Vries - first_name: Arnon full_name: Lieber, Arnon last_name: Lieber - first_name: Christoph full_name: Winkler, Christoph last_name: Winkler - first_name: Karsten full_name: Kruse, Karsten last_name: Kruse - first_name: John full_name: Small, John last_name: Small - first_name: Christian full_name: Schmeiser, Christian last_name: Schmeiser - first_name: Kinneret full_name: Keren, Kinneret last_name: Keren - first_name: Robert full_name: Hauschild, Robert id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87 last_name: Hauschild orcid: 0000-0001-9843-3522 - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 citation: ama: Mueller J, Szep G, Nemethova M, et al. Load adaptation of lamellipodial actin networks. Cell. 2017;171(1):188-200. doi:10.1016/j.cell.2017.07.051 apa: Mueller, J., Szep, G., Nemethova, M., de Vries, I., Lieber, A., Winkler, C., … Sixt, M. K. (2017). Load adaptation of lamellipodial actin networks. Cell. Cell Press. https://doi.org/10.1016/j.cell.2017.07.051 chicago: Mueller, Jan, Gregory Szep, Maria Nemethova, Ingrid de Vries, Arnon Lieber, Christoph Winkler, Karsten Kruse, et al. “Load Adaptation of Lamellipodial Actin Networks.” Cell. Cell Press, 2017. https://doi.org/10.1016/j.cell.2017.07.051. ieee: J. Mueller et al., “Load adaptation of lamellipodial actin networks,” Cell, vol. 171, no. 1. Cell Press, pp. 188–200, 2017. ista: Mueller J, Szep G, Nemethova M, de Vries I, Lieber A, Winkler C, Kruse K, Small J, Schmeiser C, Keren K, Hauschild R, Sixt MK. 2017. Load adaptation of lamellipodial actin networks. Cell. 171(1), 188–200. mla: Mueller, Jan, et al. “Load Adaptation of Lamellipodial Actin Networks.” Cell, vol. 171, no. 1, Cell Press, 2017, pp. 188–200, doi:10.1016/j.cell.2017.07.051. short: J. Mueller, G. Szep, M. Nemethova, I. de Vries, A. Lieber, C. Winkler, K. Kruse, J. Small, C. Schmeiser, K. Keren, R. Hauschild, M.K. Sixt, Cell 171 (2017) 188–200. date_created: 2018-12-11T11:48:10Z date_published: 2017-09-21T00:00:00Z date_updated: 2023-09-28T11:33:49Z day: '21' department: - _id: MiSi - _id: Bio doi: 10.1016/j.cell.2017.07.051 ec_funded: 1 external_id: isi: - '000411331800020' intvolume: ' 171' isi: 1 issue: '1' language: - iso: eng month: '09' oa_version: None page: 188 - 200 project: - _id: 25AD6156-B435-11E9-9278-68D0E5697425 grant_number: LS13-029 name: Modeling of Polarization and Motility of Leukocytes in Three-Dimensional Environments - _id: 25A603A2-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '281556' name: Cytoskeletal force generation and force transduction of migrating leukocytes (EU) publication: Cell publication_identifier: issn: - '00928674' publication_status: published publisher: Cell Press publist_id: '6951' quality_controlled: '1' scopus_import: '1' status: public title: Load adaptation of lamellipodial actin networks type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 171 year: '2017' ... --- _id: '5567' abstract: - lang: eng text: Immunological synapse DC-Tcells article_processing_charge: No author: - first_name: Alexander F full_name: Leithner, Alexander F id: 3B1B77E4-F248-11E8-B48F-1D18A9856A87 last_name: Leithner orcid: 0000-0002-1073-744X citation: ama: Leithner AF. Immunological synapse DC-Tcells. 2017. doi:10.15479/AT:ISTA:71 apa: Leithner, A. F. (2017). Immunological synapse DC-Tcells. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:71 chicago: Leithner, Alexander F. “Immunological Synapse DC-Tcells.” Institute of Science and Technology Austria, 2017. https://doi.org/10.15479/AT:ISTA:71. ieee: A. F. Leithner, “Immunological synapse DC-Tcells.” Institute of Science and Technology Austria, 2017. ista: Leithner AF. 2017. Immunological synapse DC-Tcells, Institute of Science and Technology Austria, 10.15479/AT:ISTA:71. mla: Leithner, Alexander F. Immunological Synapse DC-Tcells. Institute of Science and Technology Austria, 2017, doi:10.15479/AT:ISTA:71. short: A.F. Leithner, (2017). datarep_id: '71' date_created: 2018-12-12T12:31:34Z date_published: 2017-08-09T00:00:00Z date_updated: 2024-02-21T13:47:00Z day: '09' ddc: - '570' department: - _id: MiSi doi: 10.15479/AT:ISTA:71 file: - access_level: open_access checksum: 3d6942d47d0737d064706b5728c4d8c8 content_type: video/x-msvideo creator: system date_created: 2018-12-12T13:02:47Z date_updated: 2020-07-14T12:47:04Z file_id: '5612' file_name: IST-2017-71-v1+1_Synapse_1.avi file_size: 236204020 relation: main_file - access_level: open_access checksum: 4850006c047b0147a9e85b3c2f6f0af4 content_type: video/x-msvideo creator: system date_created: 2018-12-12T13:02:51Z date_updated: 2020-07-14T12:47:04Z file_id: '5613' file_name: IST-2017-71-v1+2_Synapse_2.avi file_size: 226232496 relation: main_file file_date_updated: 2020-07-14T12:47:04Z has_accepted_license: '1' keyword: - Immunological synapse month: '08' oa: 1 oa_version: Published Version publisher: Institute of Science and Technology Austria status: public title: Immunological synapse DC-Tcells 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: research_data user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2017' ... --- _id: '664' abstract: - lang: eng text: Immune cells communicate using cytokine signals, but the quantitative rules of this communication aren't clear. In this issue of Immunity, Oyler-Yaniv et al. (2017) suggest that the distribution of a cytokine within a lymphatic organ is primarily governed by the local density of cells consuming it. 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: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 citation: ama: Assen FP, Sixt MK. The dynamic cytokine niche. Immunity. 2017;46(4):519-520. doi:10.1016/j.immuni.2017.04.006 apa: Assen, F. P., & Sixt, M. K. (2017). The dynamic cytokine niche. Immunity. Cell Press. https://doi.org/10.1016/j.immuni.2017.04.006 chicago: Assen, Frank P, and Michael K Sixt. “The Dynamic Cytokine Niche.” Immunity. Cell Press, 2017. https://doi.org/10.1016/j.immuni.2017.04.006. ieee: F. P. Assen and M. K. Sixt, “The dynamic cytokine niche,” Immunity, vol. 46, no. 4. Cell Press, pp. 519–520, 2017. ista: Assen FP, Sixt MK. 2017. The dynamic cytokine niche. Immunity. 46(4), 519–520. mla: Assen, Frank P., and Michael K. Sixt. “The Dynamic Cytokine Niche.” Immunity, vol. 46, no. 4, Cell Press, 2017, pp. 519–20, doi:10.1016/j.immuni.2017.04.006. short: F.P. Assen, M.K. Sixt, Immunity 46 (2017) 519–520. date_created: 2018-12-11T11:47:47Z date_published: 2017-04-18T00:00:00Z date_updated: 2024-03-28T23:30:09Z day: '18' department: - _id: MiSi doi: 10.1016/j.immuni.2017.04.006 intvolume: ' 46' issue: '4' language: - iso: eng month: '04' oa_version: None page: 519 - 520 publication: Immunity publication_identifier: issn: - '10747613' publication_status: published publisher: Cell Press publist_id: '7065' quality_controlled: '1' related_material: record: - id: '6947' relation: dissertation_contains status: public scopus_import: 1 status: public title: The dynamic cytokine niche type: journal_article user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87 volume: 46 year: '2017' ... --- _id: '679' abstract: - lang: eng text: Protective responses against pathogens require a rapid mobilization of resting neutrophils and the timely removal of activated ones. Neutrophils are exceptionally short-lived leukocytes, yet it remains unclear whether the lifespan of pathogen-engaged neutrophils is regulated differently from that in the circulating steady-state pool. Here, we have found that under homeostatic conditions, the mRNA-destabilizing protein tristetraprolin (TTP) regulates apoptosis and the numbers of activated infiltrating murine neutrophils but not neutrophil cellularity. Activated TTP-deficient neutrophils exhibited decreased apoptosis and enhanced accumulation at the infection site. In the context of myeloid-specific deletion of Ttp, the potentiation of neutrophil deployment protected mice against lethal soft tissue infection with Streptococcus pyogenes and prevented bacterial dissemination. Neutrophil transcriptome analysis revealed that decreased apoptosis of TTP-deficient neutrophils was specifically associated with elevated expression of myeloid cell leukemia 1 (Mcl1) but not other antiapoptotic B cell leukemia/ lymphoma 2 (Bcl2) family members. Higher Mcl1 expression resulted from stabilization of Mcl1 mRNA in the absence of TTP. The low apoptosis rate of infiltrating TTP-deficient neutrophils was comparable to that of transgenic Mcl1-overexpressing neutrophils. Our study demonstrates that posttranscriptional gene regulation by TTP schedules the termination of the antimicrobial engagement of neutrophils. The balancing role of TTP comes at the cost of an increased risk of bacterial infections. acknowledgement: This work was supported by grants from the Austrian Science Fund (FWF) (P27538-B21, I1621-B22, and SFB 43, to PK); by funding from the European Union Seventh Framework Programme Marie Curie Initial Training Networks (FP7-PEOPLE-2012-ITN) for the project INBIONET (INfection BIOlogy Training NETwork under grant agreement PITN-GA-2012-316682; and by a joint research cluster initiative of the University of Vienna and the Medical University of Vienna. author: - first_name: Florian full_name: Ebner, Florian last_name: Ebner - first_name: Vitaly full_name: Sedlyarov, Vitaly last_name: Sedlyarov - first_name: Saren full_name: Tasciyan, Saren id: 4323B49C-F248-11E8-B48F-1D18A9856A87 last_name: Tasciyan orcid: 0000-0003-1671-393X - first_name: Masa full_name: Ivin, Masa last_name: Ivin - first_name: Franz full_name: Kratochvill, Franz last_name: Kratochvill - first_name: Nina full_name: Gratz, Nina last_name: Gratz - first_name: Lukas full_name: Kenner, Lukas last_name: Kenner - first_name: Andreas full_name: Villunger, Andreas last_name: Villunger - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 - first_name: Pavel full_name: Kovarik, Pavel last_name: Kovarik citation: ama: Ebner F, Sedlyarov V, Tasciyan S, et al. The RNA-binding protein tristetraprolin schedules apoptosis of pathogen-engaged neutrophils during bacterial infection. The Journal of Clinical Investigation. 2017;127(6):2051-2065. doi:10.1172/JCI80631 apa: Ebner, F., Sedlyarov, V., Tasciyan, S., Ivin, M., Kratochvill, F., Gratz, N., … Kovarik, P. (2017). The RNA-binding protein tristetraprolin schedules apoptosis of pathogen-engaged neutrophils during bacterial infection. The Journal of Clinical Investigation. American Society for Clinical Investigation. https://doi.org/10.1172/JCI80631 chicago: Ebner, Florian, Vitaly Sedlyarov, Saren Tasciyan, Masa Ivin, Franz Kratochvill, Nina Gratz, Lukas Kenner, Andreas Villunger, Michael K Sixt, and Pavel Kovarik. “The RNA-Binding Protein Tristetraprolin Schedules Apoptosis of Pathogen-Engaged Neutrophils during Bacterial Infection.” The Journal of Clinical Investigation. American Society for Clinical Investigation, 2017. https://doi.org/10.1172/JCI80631. ieee: F. Ebner et al., “The RNA-binding protein tristetraprolin schedules apoptosis of pathogen-engaged neutrophils during bacterial infection,” The Journal of Clinical Investigation, vol. 127, no. 6. American Society for Clinical Investigation, pp. 2051–2065, 2017. ista: Ebner F, Sedlyarov V, Tasciyan S, Ivin M, Kratochvill F, Gratz N, Kenner L, Villunger A, Sixt MK, Kovarik P. 2017. The RNA-binding protein tristetraprolin schedules apoptosis of pathogen-engaged neutrophils during bacterial infection. The Journal of Clinical Investigation. 127(6), 2051–2065. mla: Ebner, Florian, et al. “The RNA-Binding Protein Tristetraprolin Schedules Apoptosis of Pathogen-Engaged Neutrophils during Bacterial Infection.” The Journal of Clinical Investigation, vol. 127, no. 6, American Society for Clinical Investigation, 2017, pp. 2051–65, doi:10.1172/JCI80631. short: F. Ebner, V. Sedlyarov, S. Tasciyan, M. Ivin, F. Kratochvill, N. Gratz, L. Kenner, A. Villunger, M.K. Sixt, P. Kovarik, The Journal of Clinical Investigation 127 (2017) 2051–2065. date_created: 2018-12-11T11:47:53Z date_published: 2017-06-01T00:00:00Z date_updated: 2024-03-28T23:30:23Z day: '01' department: - _id: MiSi doi: 10.1172/JCI80631 external_id: pmid: - '28504646' intvolume: ' 127' issue: '6' language: - iso: eng main_file_link: - open_access: '1' url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5451238/ month: '06' oa: 1 oa_version: Submitted Version page: 2051 - 2065 pmid: 1 project: - _id: 25985A36-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: T00817-B21 name: The biochemical basis of PAR polarization - _id: 25E9AF9E-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P27201-B22 name: Revealing the mechanisms underlying drug interactions publication: The Journal of Clinical Investigation publication_identifier: issn: - '00219738' publication_status: published publisher: American Society for Clinical Investigation publist_id: '7038' quality_controlled: '1' related_material: record: - id: '12401' relation: dissertation_contains status: public scopus_import: 1 status: public title: The RNA-binding protein tristetraprolin schedules apoptosis of pathogen-engaged neutrophils during bacterial infection type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 127 year: '2017' ... --- _id: '1137' abstract: - lang: eng text: RASGRP1 is an important guanine nucleotide exchange factor and activator of the RAS-MAPK pathway following T cell antigen receptor (TCR) signaling. The consequences of RASGRP1 mutations in humans are unknown. In a patient with recurrent bacterial and viral infections, born to healthy consanguineous parents, we used homozygosity mapping and exome sequencing to identify a biallelic stop-gain variant in RASGRP1. This variant segregated perfectly with the disease and has not been reported in genetic databases. RASGRP1 deficiency was associated in T cells and B cells with decreased phosphorylation of the extracellular-signal-regulated serine kinase ERK, which was restored following expression of wild-type RASGRP1. RASGRP1 deficiency also resulted in defective proliferation, activation and motility of T cells and B cells. RASGRP1-deficient natural killer (NK) cells exhibited impaired cytotoxicity with defective granule convergence and actin accumulation. Interaction proteomics identified the dynein light chain DYNLL1 as interacting with RASGRP1, which links RASGRP1 to cytoskeletal dynamics. RASGRP1-deficient cells showed decreased activation of the GTPase RhoA. Treatment with lenalidomide increased RhoA activity and reversed the migration and activation defects of RASGRP1-deficient lymphocytes. article_processing_charge: No article_type: original author: - first_name: Elisabeth full_name: Salzer, Elisabeth last_name: Salzer - first_name: Deniz full_name: Çaǧdaş, Deniz last_name: Çaǧdaş - first_name: Miroslav full_name: Hons, Miroslav id: 4167FE56-F248-11E8-B48F-1D18A9856A87 last_name: Hons orcid: 0000-0002-6625-3348 - first_name: Emily full_name: Mace, Emily last_name: Mace - first_name: Wojciech full_name: Garncarz, Wojciech last_name: Garncarz - first_name: Oezlem full_name: Petronczki, Oezlem last_name: Petronczki - first_name: René full_name: Platzer, René last_name: Platzer - first_name: Laurène full_name: Pfajfer, Laurène last_name: Pfajfer - first_name: Ivan full_name: Bilic, Ivan last_name: Bilic - first_name: Sol full_name: Ban, Sol last_name: Ban - first_name: Katharina full_name: Willmann, Katharina last_name: Willmann - first_name: Malini full_name: Mukherjee, Malini last_name: Mukherjee - first_name: Verena full_name: Supper, Verena last_name: Supper - first_name: Hsiangting full_name: Hsu, Hsiangting last_name: Hsu - first_name: Pinaki full_name: Banerjee, Pinaki last_name: Banerjee - first_name: Papiya full_name: Sinha, Papiya last_name: Sinha - first_name: Fabienne full_name: Mcclanahan, Fabienne last_name: Mcclanahan - first_name: Gerhard full_name: Zlabinger, Gerhard last_name: Zlabinger - first_name: Winfried full_name: Pickl, Winfried last_name: Pickl - first_name: John full_name: Gribben, John last_name: Gribben - first_name: Hannes full_name: Stockinger, Hannes last_name: Stockinger - first_name: Keiryn full_name: Bennett, Keiryn last_name: Bennett - first_name: Johannes full_name: Huppa, Johannes last_name: Huppa - first_name: Loï̈C full_name: Dupré, Loï̈C last_name: Dupré - first_name: Özden full_name: Sanal, Özden last_name: Sanal - first_name: Ulrich full_name: Jäger, Ulrich last_name: Jäger - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 - first_name: Ilhan full_name: Tezcan, Ilhan last_name: Tezcan - first_name: Jordan full_name: Orange, Jordan last_name: Orange - first_name: Kaan full_name: Boztug, Kaan last_name: Boztug citation: ama: Salzer E, Çaǧdaş D, Hons M, et al. RASGRP1 deficiency causes immunodeficiency with impaired cytoskeletal dynamics. Nature Immunology. 2016;17(12):1352-1360. doi:10.1038/ni.3575 apa: Salzer, E., Çaǧdaş, D., Hons, M., Mace, E., Garncarz, W., Petronczki, O., … Boztug, K. (2016). RASGRP1 deficiency causes immunodeficiency with impaired cytoskeletal dynamics. Nature Immunology. Nature Publishing Group. https://doi.org/10.1038/ni.3575 chicago: Salzer, Elisabeth, Deniz Çaǧdaş, Miroslav Hons, Emily Mace, Wojciech Garncarz, Oezlem Petronczki, René Platzer, et al. “RASGRP1 Deficiency Causes Immunodeficiency with Impaired Cytoskeletal Dynamics.” Nature Immunology. Nature Publishing Group, 2016. https://doi.org/10.1038/ni.3575. ieee: E. Salzer et al., “RASGRP1 deficiency causes immunodeficiency with impaired cytoskeletal dynamics,” Nature Immunology, vol. 17, no. 12. Nature Publishing Group, pp. 1352–1360, 2016. ista: Salzer E, Çaǧdaş D, Hons M, Mace E, Garncarz W, Petronczki O, Platzer R, Pfajfer L, Bilic I, Ban S, Willmann K, Mukherjee M, Supper V, Hsu H, Banerjee P, Sinha P, Mcclanahan F, Zlabinger G, Pickl W, Gribben J, Stockinger H, Bennett K, Huppa J, Dupré L, Sanal Ö, Jäger U, Sixt MK, Tezcan I, Orange J, Boztug K. 2016. RASGRP1 deficiency causes immunodeficiency with impaired cytoskeletal dynamics. Nature Immunology. 17(12), 1352–1360. mla: Salzer, Elisabeth, et al. “RASGRP1 Deficiency Causes Immunodeficiency with Impaired Cytoskeletal Dynamics.” Nature Immunology, vol. 17, no. 12, Nature Publishing Group, 2016, pp. 1352–60, doi:10.1038/ni.3575. short: E. Salzer, D. Çaǧdaş, M. Hons, E. Mace, W. Garncarz, O. Petronczki, R. Platzer, L. Pfajfer, I. Bilic, S. Ban, K. Willmann, M. Mukherjee, V. Supper, H. Hsu, P. Banerjee, P. Sinha, F. Mcclanahan, G. Zlabinger, W. Pickl, J. Gribben, H. Stockinger, K. Bennett, J. Huppa, L. Dupré, Ö. Sanal, U. Jäger, M.K. Sixt, I. Tezcan, J. Orange, K. Boztug, Nature Immunology 17 (2016) 1352–1360. date_created: 2018-12-11T11:50:21Z date_published: 2016-12-01T00:00:00Z date_updated: 2021-01-12T06:48:33Z day: '01' department: - _id: MiSi doi: 10.1038/ni.3575 external_id: pmid: - '27776107' intvolume: ' 17' issue: '12' language: - iso: eng main_file_link: - open_access: '1' url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6400263 month: '12' oa: 1 oa_version: Submitted Version page: 1352 - 1360 pmid: 1 publication: Nature Immunology publication_status: published publisher: Nature Publishing Group publist_id: '6221' quality_controlled: '1' scopus_import: 1 status: public title: RASGRP1 deficiency causes immunodeficiency with impaired cytoskeletal dynamics type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 17 year: '2016' ... --- _id: '1142' abstract: - lang: eng text: Hemolysis drives susceptibility to bacterial infections and predicts poor outcome from sepsis. These detrimental effects are commonly considered to be a consequence of heme-iron serving as a nutrient for bacteria. We employed a Gram-negative sepsis model and found that elevated heme levels impaired the control of bacterial proliferation independently of heme-iron acquisition by pathogens. Heme strongly inhibited phagocytosis and the migration of human and mouse phagocytes by disrupting actin cytoskeletal dynamics via activation of the GTP-binding Rho family protein Cdc42 by the guanine nucleotide exchange factor DOCK8. A chemical screening approach revealed that quinine effectively prevented heme effects on the cytoskeleton, restored phagocytosis and improved survival in sepsis. These mechanistic insights provide potential therapeutic targets for patients with sepsis or hemolytic disorders. acknowledgement: 'Y. Fukui (Medical Institute of Bioregulation, Kyushu University) and J. Stein (Theodor Kocher Institute, University of Bern) are acknowledged for providing the DOCK8 deficient bone marrow. and H. Häcker (St. Judes Children''s Research Hospital) for providing the ERHBD-HoxB8-encoding retroviral construct. pSpCas9(BB)-2a-Puro (PX459) was a gift from F. Zhang (Massachusetts Institute of Technology) (Addgene plasmid # 48139) and pGRG36 was a gift from N. Craig (Johns Hopkins University School of Medicine) (Addgene plasmid # 16666). LifeAct-GFP-encoding retrovirus was kindly provided by A. Leithner (Institute of Science and Technology Austria). pSIM8 and TKC E. coli were gifts from D.L. Court (Center for Cancer Research, National Cancer Institute). We acknowledge M. Gröger and S. Rauscher for excellent technical support (Core imaging facility, Medical University of Vienna). We thank D.P. Barlow and L.R. Cheever for critical reading of the manuscript. This work was supported by the Austrian Academy of Sciences, the Science Fund of the Austrian National Bank (14107) and the Austrian Science Fund FWF (I1620-B22) in the Infect-ERA framework (to S.Knapp).' author: - first_name: Rui full_name: Martins, Rui last_name: Martins - first_name: Julia full_name: Maier, Julia last_name: Maier - first_name: Anna full_name: Gorki, Anna last_name: Gorki - first_name: Kilian full_name: Huber, Kilian last_name: Huber - first_name: Omar full_name: Sharif, Omar last_name: Sharif - first_name: Philipp full_name: Starkl, Philipp last_name: Starkl - first_name: Simona full_name: Saluzzo, Simona last_name: Saluzzo - first_name: Federica full_name: Quattrone, Federica last_name: Quattrone - first_name: Riem full_name: Gawish, Riem last_name: Gawish - first_name: Karin full_name: Lakovits, Karin last_name: Lakovits - first_name: Michael full_name: Aichinger, Michael last_name: Aichinger - first_name: Branka full_name: Radic Sarikas, Branka last_name: Radic Sarikas - first_name: Charles full_name: Lardeau, Charles last_name: Lardeau - first_name: Anastasiya full_name: Hladik, Anastasiya last_name: Hladik - first_name: Ana full_name: Korosec, Ana last_name: Korosec - first_name: Markus full_name: Brown, Markus id: 3DAB9AFC-F248-11E8-B48F-1D18A9856A87 last_name: Brown - first_name: Kari full_name: Vaahtomeri, Kari id: 368EE576-F248-11E8-B48F-1D18A9856A87 last_name: Vaahtomeri orcid: 0000-0001-7829-3518 - first_name: Michelle full_name: Duggan, Michelle id: 2EDEA62C-F248-11E8-B48F-1D18A9856A87 last_name: Duggan - first_name: Dontscho full_name: Kerjaschki, Dontscho last_name: Kerjaschki - first_name: Harald full_name: Esterbauer, Harald last_name: Esterbauer - first_name: Jacques full_name: Colinge, Jacques last_name: Colinge - first_name: Stephanie full_name: Eisenbarth, Stephanie last_name: Eisenbarth - first_name: Thomas full_name: Decker, Thomas last_name: Decker - first_name: Keiryn full_name: Bennett, Keiryn last_name: Bennett - first_name: Stefan full_name: Kubicek, Stefan last_name: Kubicek - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 - first_name: Giulio full_name: Superti Furga, Giulio last_name: Superti Furga - first_name: Sylvia full_name: Knapp, Sylvia last_name: Knapp citation: ama: Martins R, Maier J, Gorki A, et al. Heme drives hemolysis-induced susceptibility to infection via disruption of phagocyte functions. Nature Immunology. 2016;17(12):1361-1372. doi:10.1038/ni.3590 apa: Martins, R., Maier, J., Gorki, A., Huber, K., Sharif, O., Starkl, P., … Knapp, S. (2016). Heme drives hemolysis-induced susceptibility to infection via disruption of phagocyte functions. Nature Immunology. Nature Publishing Group. https://doi.org/10.1038/ni.3590 chicago: Martins, Rui, Julia Maier, Anna Gorki, Kilian Huber, Omar Sharif, Philipp Starkl, Simona Saluzzo, et al. “Heme Drives Hemolysis-Induced Susceptibility to Infection via Disruption of Phagocyte Functions.” Nature Immunology. Nature Publishing Group, 2016. https://doi.org/10.1038/ni.3590. ieee: R. Martins et al., “Heme drives hemolysis-induced susceptibility to infection via disruption of phagocyte functions,” Nature Immunology, vol. 17, no. 12. Nature Publishing Group, pp. 1361–1372, 2016. ista: Martins R, Maier J, Gorki A, Huber K, Sharif O, Starkl P, Saluzzo S, Quattrone F, Gawish R, Lakovits K, Aichinger M, Radic Sarikas B, Lardeau C, Hladik A, Korosec A, Brown M, Vaahtomeri K, Duggan M, Kerjaschki D, Esterbauer H, Colinge J, Eisenbarth S, Decker T, Bennett K, Kubicek S, Sixt MK, Superti Furga G, Knapp S. 2016. Heme drives hemolysis-induced susceptibility to infection via disruption of phagocyte functions. Nature Immunology. 17(12), 1361–1372. mla: Martins, Rui, et al. “Heme Drives Hemolysis-Induced Susceptibility to Infection via Disruption of Phagocyte Functions.” Nature Immunology, vol. 17, no. 12, Nature Publishing Group, 2016, pp. 1361–72, doi:10.1038/ni.3590. short: R. Martins, J. Maier, A. Gorki, K. Huber, O. Sharif, P. Starkl, S. Saluzzo, F. Quattrone, R. Gawish, K. Lakovits, M. Aichinger, B. Radic Sarikas, C. Lardeau, A. Hladik, A. Korosec, M. Brown, K. Vaahtomeri, M. Duggan, D. Kerjaschki, H. Esterbauer, J. Colinge, S. Eisenbarth, T. Decker, K. Bennett, S. Kubicek, M.K. Sixt, G. Superti Furga, S. Knapp, Nature Immunology 17 (2016) 1361–1372. date_created: 2018-12-11T11:50:22Z date_published: 2016-12-01T00:00:00Z date_updated: 2021-01-12T06:48:36Z day: '01' department: - _id: MiSi - _id: PeJo doi: 10.1038/ni.3590 intvolume: ' 17' issue: '12' language: - iso: eng main_file_link: - open_access: '1' url: https://ora.ox.ac.uk/objects/uuid:f53a464e-1e5b-4f08-a7d8-b6749b852b9d month: '12' oa: 1 oa_version: Submitted Version page: 1361 - 1372 publication: Nature Immunology publication_status: published publisher: Nature Publishing Group publist_id: '6216' quality_controlled: '1' scopus_import: 1 status: public title: Heme drives hemolysis-induced susceptibility to infection via disruption of phagocyte functions type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 17 year: '2016' ... --- _id: '1150' abstract: - lang: eng text: When neutrophils infiltrate a site of inflammation, they have to stop at the right place to exert their effector function. In this issue of Developmental Cell, Wang et al. (2016) show that neutrophils sense reactive oxygen species via the TRPM2 channel to arrest migration at their target site. © 2016 Elsevier Inc. author: - first_name: Jörg full_name: Renkawitz, Jörg id: 3F0587C8-F248-11E8-B48F-1D18A9856A87 last_name: Renkawitz orcid: 0000-0003-2856-3369 - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 citation: ama: Renkawitz J, Sixt MK. A Radical Break Restraining Neutrophil Migration. Developmental Cell. 2016;38(5):448-450. doi:10.1016/j.devcel.2016.08.017 apa: Renkawitz, J., & Sixt, M. K. (2016). A Radical Break Restraining Neutrophil Migration. Developmental Cell. Cell Press. https://doi.org/10.1016/j.devcel.2016.08.017 chicago: Renkawitz, Jörg, and Michael K Sixt. “A Radical Break Restraining Neutrophil Migration.” Developmental Cell. Cell Press, 2016. https://doi.org/10.1016/j.devcel.2016.08.017. ieee: J. Renkawitz and M. K. Sixt, “A Radical Break Restraining Neutrophil Migration,” Developmental Cell, vol. 38, no. 5. Cell Press, pp. 448–450, 2016. ista: Renkawitz J, Sixt MK. 2016. A Radical Break Restraining Neutrophil Migration. Developmental Cell. 38(5), 448–450. mla: Renkawitz, Jörg, and Michael K. Sixt. “A Radical Break Restraining Neutrophil Migration.” Developmental Cell, vol. 38, no. 5, Cell Press, 2016, pp. 448–50, doi:10.1016/j.devcel.2016.08.017. short: J. Renkawitz, M.K. Sixt, Developmental Cell 38 (2016) 448–450. date_created: 2018-12-11T11:50:25Z date_published: 2016-09-12T00:00:00Z date_updated: 2021-01-12T06:48:39Z day: '12' department: - _id: MiSi doi: 10.1016/j.devcel.2016.08.017 intvolume: ' 38' issue: '5' language: - iso: eng month: '09' oa_version: None page: 448 - 450 publication: Developmental Cell publication_status: published publisher: Cell Press publist_id: '6208' quality_controlled: '1' scopus_import: 1 status: public title: A Radical Break Restraining Neutrophil Migration type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 38 year: '2016' ... --- _id: '1154' abstract: - lang: eng text: "Cellular locomotion is a central hallmark of eukaryotic life. It is governed by cell-extrinsic molecular factors, which can either emerge in the soluble phase or as immobilized, often adhesive ligands. To encode for direction, every cue must be present as a spatial or temporal gradient. Here, we developed a microfluidic chamber that allows measurement of cell migration in combined response to surface immobilized and soluble molecular gradients. As a proof of principle we study the response of dendritic cells to their major guidance cues, chemokines. The majority of data on chemokine gradient sensing is based on in vitro studies employing soluble gradients. Despite evidence suggesting that in vivo chemokines are often immobilized to sugar residues, limited information is available how cells respond to immobilized chemokines. We tracked migration of dendritic cells towards immobilized gradients of the chemokine CCL21 and varying superimposed soluble gradients of CCL19. Differential migratory patterns illustrate the potential of our setup to quantitatively study the competitive response to both types of gradients. Beyond chemokines our approach is broadly applicable to alternative systems of chemo- and haptotaxis such as cells migrating along gradients of adhesion receptor ligands vs. any soluble cue. \r\n" acknowledgement: 'This work was supported by the Swiss National Science Foundation (Ambizione fellowship; PZ00P3-154733 to M.M.), the Swiss Multiple Sclerosis Society (research support to M.M.), a fellowship from the Boehringer Ingelheim Fonds (BIF) to J.S., the European Research Council (grant ERC GA 281556) and a START award from the Austrian Science Foundation (FWF) to M.S. #BioimagingFacility' article_number: '36440' author: - first_name: Jan full_name: Schwarz, Jan id: 346C1EC6-F248-11E8-B48F-1D18A9856A87 last_name: Schwarz - first_name: Veronika full_name: Bierbaum, Veronika id: 3FD04378-F248-11E8-B48F-1D18A9856A87 last_name: Bierbaum - first_name: Jack full_name: Merrin, Jack id: 4515C308-F248-11E8-B48F-1D18A9856A87 last_name: Merrin orcid: 0000-0001-5145-4609 - first_name: Tino full_name: Frank, Tino last_name: Frank - first_name: Robert full_name: Hauschild, Robert id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87 last_name: Hauschild orcid: 0000-0001-9843-3522 - first_name: Mark Tobias full_name: Bollenbach, Mark Tobias id: 3E6DB97A-F248-11E8-B48F-1D18A9856A87 last_name: Bollenbach orcid: 0000-0003-4398-476X - first_name: Savaş full_name: Tay, Savaş last_name: Tay - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 - first_name: Matthias full_name: Mehling, Matthias id: 3C23B994-F248-11E8-B48F-1D18A9856A87 last_name: Mehling orcid: 0000-0001-8599-1226 citation: ama: Schwarz J, Bierbaum V, Merrin J, et al. A microfluidic device for measuring cell migration towards substrate bound and soluble chemokine gradients. Scientific Reports. 2016;6. doi:10.1038/srep36440 apa: Schwarz, J., Bierbaum, V., Merrin, J., Frank, T., Hauschild, R., Bollenbach, M. T., … Mehling, M. (2016). A microfluidic device for measuring cell migration towards substrate bound and soluble chemokine gradients. Scientific Reports. Nature Publishing Group. https://doi.org/10.1038/srep36440 chicago: Schwarz, Jan, Veronika Bierbaum, Jack Merrin, Tino Frank, Robert Hauschild, Mark Tobias Bollenbach, Savaş Tay, Michael K Sixt, and Matthias Mehling. “A Microfluidic Device for Measuring Cell Migration towards Substrate Bound and Soluble Chemokine Gradients.” Scientific Reports. Nature Publishing Group, 2016. https://doi.org/10.1038/srep36440. ieee: J. Schwarz et al., “A microfluidic device for measuring cell migration towards substrate bound and soluble chemokine gradients,” Scientific Reports, vol. 6. Nature Publishing Group, 2016. ista: Schwarz J, Bierbaum V, Merrin J, Frank T, Hauschild R, Bollenbach MT, Tay S, Sixt MK, Mehling M. 2016. A microfluidic device for measuring cell migration towards substrate bound and soluble chemokine gradients. Scientific Reports. 6, 36440. mla: Schwarz, Jan, et al. “A Microfluidic Device for Measuring Cell Migration towards Substrate Bound and Soluble Chemokine Gradients.” Scientific Reports, vol. 6, 36440, Nature Publishing Group, 2016, doi:10.1038/srep36440. short: J. Schwarz, V. Bierbaum, J. Merrin, T. Frank, R. Hauschild, M.T. Bollenbach, S. Tay, M.K. Sixt, M. Mehling, Scientific Reports 6 (2016). date_created: 2018-12-11T11:50:27Z date_published: 2016-11-07T00:00:00Z date_updated: 2021-01-12T06:48:41Z day: '07' ddc: - '579' department: - _id: MiSi - _id: NanoFab - _id: Bio - _id: ToBo doi: 10.1038/srep36440 ec_funded: 1 file: - access_level: open_access content_type: application/pdf creator: system date_created: 2018-12-12T10:09:32Z date_updated: 2018-12-12T10:09:32Z file_id: '4756' file_name: IST-2017-744-v1+1_srep36440.pdf file_size: 2353456 relation: main_file file_date_updated: 2018-12-12T10:09:32Z has_accepted_license: '1' intvolume: ' 6' language: - iso: eng month: '11' oa: 1 oa_version: Published Version project: - _id: 25A603A2-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '281556' name: Cytoskeletal force generation and force transduction of migrating leukocytes (EU) - _id: 25A8E5EA-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Y 564-B12 name: Cytoskeletal force generation and transduction of leukocytes (FWF) publication: Scientific Reports publication_status: published publisher: Nature Publishing Group publist_id: '6204' pubrep_id: '744' quality_controlled: '1' scopus_import: 1 status: public title: A microfluidic device for measuring cell migration towards substrate bound and soluble chemokine gradients 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: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 6 year: '2016' ... --- _id: '1201' abstract: - lang: eng text: In this issue of Cell, Skau et al. show that the formin FMN2 organizes a perinuclear actin cytoskeleton that protects the nucleus and its genomic content of migrating cells squeezing through small spaces. author: - first_name: Jörg full_name: Renkawitz, Jörg id: 3F0587C8-F248-11E8-B48F-1D18A9856A87 last_name: Renkawitz orcid: 0000-0003-2856-3369 - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 citation: ama: Renkawitz J, Sixt MK. Formin’ a nuclear protection. Cell. 2016;167(6):1448-1449. doi:10.1016/j.cell.2016.11.024 apa: Renkawitz, J., & Sixt, M. K. (2016). Formin’ a nuclear protection. Cell. Cell Press. https://doi.org/10.1016/j.cell.2016.11.024 chicago: Renkawitz, Jörg, and Michael K Sixt. “Formin’ a Nuclear Protection.” Cell. Cell Press, 2016. https://doi.org/10.1016/j.cell.2016.11.024. ieee: J. Renkawitz and M. K. Sixt, “Formin’ a nuclear protection,” Cell, vol. 167, no. 6. Cell Press, pp. 1448–1449, 2016. ista: Renkawitz J, Sixt MK. 2016. Formin’ a nuclear protection. Cell. 167(6), 1448–1449. mla: Renkawitz, Jörg, and Michael K. Sixt. “Formin’ a Nuclear Protection.” Cell, vol. 167, no. 6, Cell Press, 2016, pp. 1448–49, doi:10.1016/j.cell.2016.11.024. short: J. Renkawitz, M.K. Sixt, Cell 167 (2016) 1448–1449. date_created: 2018-12-11T11:50:41Z date_published: 2016-12-01T00:00:00Z date_updated: 2021-01-12T06:49:03Z day: '01' department: - _id: MiSi doi: 10.1016/j.cell.2016.11.024 intvolume: ' 167' issue: '6' language: - iso: eng month: '12' oa_version: None page: 1448 - 1449 publication: Cell publication_status: published publisher: Cell Press publist_id: '6149' quality_controlled: '1' scopus_import: 1 status: public title: Formin’ a nuclear protection type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 167 year: '2016' ... --- _id: '1217' abstract: - lang: eng text: Understanding the regulation of T-cell responses during inflammation and auto-immunity is fundamental for designing efficient therapeutic strategies against immune diseases. In this regard, prostaglandin E 2 (PGE 2) is mostly considered a myeloid-derived immunosuppressive molecule. We describe for the first time that T cells secrete PGE 2 during T-cell receptor stimulation. In addition, we show that autocrine PGE 2 signaling through EP receptors is essential for optimal CD4 + T-cell activation in vitro and in vivo, and for T helper 1 (Th1) and regulatory T cell differentiation. PGE 2 was found to provide additive co-stimulatory signaling through AKT activation. Intravital multiphoton microscopy showed that triggering EP receptors in T cells is also essential for the stability of T cell-dendritic cell (DC) interactions and Th-cell accumulation in draining lymph nodes (LNs) during inflammation. We further demonstrated that blocking EP receptors in T cells during the initial phase of collagen-induced arthritis in mice resulted in a reduction of clinical arthritis. This could be attributable to defective T-cell activation, accompanied by a decline in activated and interferon-γ-producing CD4 + Th1 cells in draining LNs. In conclusion, we prove that T lymphocytes secret picomolar concentrations of PGE 2, which in turn provide additive co-stimulatory signaling, enabling T cells to attain a favorable activation threshold. PGE 2 signaling in T cells is also required for maintaining long and stable interactions with DCs within LNs. Blockade of EP receptors in vivo impairs T-cell activation and development of T cell-mediated inflammatory responses. This may have implications in various pathophysiological settings. acknowledgement: This manuscript has been supported by grants SAF2007-61716 and S-SAL-0159/2006 awarded by the Spanish Ministry of Science and Education and the Community of Madrid to Dr M Fresno. author: - first_name: Vinatha full_name: Sreeramkumar, Vinatha last_name: Sreeramkumar - first_name: Miroslav full_name: Hons, Miroslav id: 4167FE56-F248-11E8-B48F-1D18A9856A87 last_name: Hons orcid: 0000-0002-6625-3348 - first_name: Carmen full_name: Punzón, Carmen last_name: Punzón - first_name: Jens full_name: Stein, Jens last_name: Stein - first_name: David full_name: Sancho, David last_name: Sancho - first_name: Manuel full_name: Fresno Forcelledo, Manuel last_name: Fresno Forcelledo - first_name: Natalia full_name: Cuesta, Natalia last_name: Cuesta citation: ama: Sreeramkumar V, Hons M, Punzón C, et al. Efficient T-cell priming and activation requires signaling through prostaglandin E2 (EP) receptors. Immunology and Cell Biology. 2016;94(1):39-51. doi:10.1038/icb.2015.62 apa: Sreeramkumar, V., Hons, M., Punzón, C., Stein, J., Sancho, D., Fresno Forcelledo, M., & Cuesta, N. (2016). Efficient T-cell priming and activation requires signaling through prostaglandin E2 (EP) receptors. Immunology and Cell Biology. Nature Publishing Group. https://doi.org/10.1038/icb.2015.62 chicago: Sreeramkumar, Vinatha, Miroslav Hons, Carmen Punzón, Jens Stein, David Sancho, Manuel Fresno Forcelledo, and Natalia Cuesta. “Efficient T-Cell Priming and Activation Requires Signaling through Prostaglandin E2 (EP) Receptors.” Immunology and Cell Biology. Nature Publishing Group, 2016. https://doi.org/10.1038/icb.2015.62. ieee: V. Sreeramkumar et al., “Efficient T-cell priming and activation requires signaling through prostaglandin E2 (EP) receptors,” Immunology and Cell Biology, vol. 94, no. 1. Nature Publishing Group, pp. 39–51, 2016. ista: Sreeramkumar V, Hons M, Punzón C, Stein J, Sancho D, Fresno Forcelledo M, Cuesta N. 2016. Efficient T-cell priming and activation requires signaling through prostaglandin E2 (EP) receptors. Immunology and Cell Biology. 94(1), 39–51. mla: Sreeramkumar, Vinatha, et al. “Efficient T-Cell Priming and Activation Requires Signaling through Prostaglandin E2 (EP) Receptors.” Immunology and Cell Biology, vol. 94, no. 1, Nature Publishing Group, 2016, pp. 39–51, doi:10.1038/icb.2015.62. short: V. Sreeramkumar, M. Hons, C. Punzón, J. Stein, D. Sancho, M. Fresno Forcelledo, N. Cuesta, Immunology and Cell Biology 94 (2016) 39–51. date_created: 2018-12-11T11:50:46Z date_published: 2016-01-01T00:00:00Z date_updated: 2021-01-12T06:49:09Z day: '01' department: - _id: MiSi doi: 10.1038/icb.2015.62 intvolume: ' 94' issue: '1' language: - iso: eng month: '01' oa_version: None page: 39 - 51 publication: Immunology and Cell Biology publication_status: published publisher: Nature Publishing Group publist_id: '6116' quality_controlled: '1' scopus_import: 1 status: public title: Efficient T-cell priming and activation requires signaling through prostaglandin E2 (EP) receptors type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 94 year: '2016' ...