--- _id: '6497' abstract: - lang: eng text: T cells are actively scanning pMHC-presenting cells in lymphoid organs and nonlymphoid tissues (NLTs) with divergent topologies and confinement. How the T cell actomyosin cytoskeleton facilitates this task in distinct environments is incompletely understood. Here, we show that lack of Myosin IXb (Myo9b), a negative regulator of the small GTPase Rho, led to increased Rho-GTP levels and cell surface stiffness in primary T cells. Nonetheless, intravital imaging revealed robust motility of Myo9b−/− CD8+ T cells in lymphoid tissue and similar expansion and differentiation during immune responses. In contrast, accumulation of Myo9b−/− CD8+ T cells in NLTs was strongly impaired. Specifically, Myo9b was required for T cell crossing of basement membranes, such as those which are present between dermis and epidermis. As consequence, Myo9b−/− CD8+ T cells showed impaired control of skin infections. In sum, we show that Myo9b is critical for the CD8+ T cell adaptation from lymphoid to NLT surveillance and the establishment of protective tissue–resident T cell populations. article_processing_charge: No author: - first_name: Federica full_name: Moalli, Federica last_name: Moalli - first_name: Xenia full_name: Ficht, Xenia last_name: Ficht - first_name: Philipp full_name: Germann, Philipp last_name: Germann - first_name: Mykhailo full_name: Vladymyrov, Mykhailo last_name: Vladymyrov - first_name: Bettina full_name: Stolp, Bettina last_name: Stolp - first_name: Ingrid full_name: de Vries, Ingrid id: 4C7D837E-F248-11E8-B48F-1D18A9856A87 last_name: de Vries - first_name: Ruth full_name: Lyck, Ruth last_name: Lyck - first_name: Jasmin full_name: Balmer, Jasmin last_name: Balmer - first_name: Amleto full_name: Fiocchi, Amleto last_name: Fiocchi - first_name: Mario full_name: Kreutzfeldt, Mario last_name: Kreutzfeldt - first_name: Doron full_name: Merkler, Doron last_name: Merkler - first_name: Matteo full_name: Iannacone, Matteo last_name: Iannacone - first_name: Akitaka full_name: Ariga, Akitaka last_name: Ariga - first_name: Michael H. full_name: Stoffel, Michael H. last_name: Stoffel - first_name: James full_name: Sharpe, James last_name: Sharpe - first_name: Martin full_name: Bähler, Martin last_name: Bähler - 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: Alba full_name: Diz-Muñoz, Alba last_name: Diz-Muñoz - first_name: Jens V. full_name: Stein, Jens V. last_name: Stein citation: ama: Moalli F, Ficht X, Germann P, et al. The Rho regulator Myosin IXb enables nonlymphoid tissue seeding of protective CD8+T cells. The Journal of Experimental Medicine. 2018;2015(7):1869–1890. doi:10.1084/jem.20170896 apa: Moalli, F., Ficht, X., Germann, P., Vladymyrov, M., Stolp, B., de Vries, I., … Stein, J. V. (2018). The Rho regulator Myosin IXb enables nonlymphoid tissue seeding of protective CD8+T cells. The Journal of Experimental Medicine. Rockefeller University Press. https://doi.org/10.1084/jem.20170896 chicago: Moalli, Federica, Xenia Ficht, Philipp Germann, Mykhailo Vladymyrov, Bettina Stolp, Ingrid de Vries, Ruth Lyck, et al. “The Rho Regulator Myosin IXb Enables Nonlymphoid Tissue Seeding of Protective CD8+T Cells.” The Journal of Experimental Medicine. Rockefeller University Press, 2018. https://doi.org/10.1084/jem.20170896. ieee: F. Moalli et al., “The Rho regulator Myosin IXb enables nonlymphoid tissue seeding of protective CD8+T cells,” The Journal of Experimental Medicine, vol. 2015, no. 7. Rockefeller University Press, pp. 1869–1890, 2018. ista: Moalli F, Ficht X, Germann P, Vladymyrov M, Stolp B, de Vries I, Lyck R, Balmer J, Fiocchi A, Kreutzfeldt M, Merkler D, Iannacone M, Ariga A, Stoffel MH, Sharpe J, Bähler M, Sixt MK, Diz-Muñoz A, Stein JV. 2018. The Rho regulator Myosin IXb enables nonlymphoid tissue seeding of protective CD8+T cells. The Journal of Experimental Medicine. 2015(7), 1869–1890. mla: Moalli, Federica, et al. “The Rho Regulator Myosin IXb Enables Nonlymphoid Tissue Seeding of Protective CD8+T Cells.” The Journal of Experimental Medicine, vol. 2015, no. 7, Rockefeller University Press, 2018, pp. 1869–1890, doi:10.1084/jem.20170896. short: F. Moalli, X. Ficht, P. Germann, M. Vladymyrov, B. Stolp, I. de Vries, R. Lyck, J. Balmer, A. Fiocchi, M. Kreutzfeldt, D. Merkler, M. Iannacone, A. Ariga, M.H. Stoffel, J. Sharpe, M. Bähler, M.K. Sixt, A. Diz-Muñoz, J.V. Stein, The Journal of Experimental Medicine 2015 (2018) 1869–1890. date_created: 2019-05-28T12:36:47Z date_published: 2018-06-06T00:00:00Z date_updated: 2023-09-19T14:52:08Z day: '06' ddc: - '570' department: - _id: MiSi doi: 10.1084/jem.20170896 external_id: isi: - '000440822900011' file: - access_level: open_access checksum: 86ae5331f9bfced9a6358a790a04bef4 content_type: application/pdf creator: kschuh date_created: 2019-05-28T12:40:05Z date_updated: 2020-07-14T12:47:32Z file_id: '6498' file_name: 2018_rupress_Moalli.pdf file_size: 3841660 relation: main_file file_date_updated: 2020-07-14T12:47:32Z has_accepted_license: '1' intvolume: ' 2015' isi: 1 issue: '7' language: - iso: eng license: https://creativecommons.org/licenses/by-nc-sa/4.0/ month: '06' oa: 1 oa_version: Published Version page: 1869–1890 publication: The Journal of Experimental Medicine publication_identifier: eissn: - 1540-9538 issn: - 0022-1007 publication_status: published publisher: Rockefeller University Press quality_controlled: '1' scopus_import: '1' status: public title: The Rho regulator Myosin IXb enables nonlymphoid tissue seeding of protective CD8+T cells tmp: image: /images/cc_by_nc_sa.png legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) short: CC BY-NC-SA (4.0) type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 2015 year: '2018' ...