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Adv."],"published-print":{"date-parts":[[2026,8,7]]},"abstract":"<jats:p>\n                    The tyrosine kinase inhibitor dasatinib is prescribed as a first-line treatment for Philadelphia chromosome\u2013positive leukemias and is increasingly used in other clinical settings. While dasatinib is effective and generally well tolerated, patients often experience a transient lymphocytosis attributable to a dasatinib-induced spleen contraction and an acute mobilization of splenocytes, as we have recently demonstrated in murine models and human patients. In contrast, the impact of dasatinib on lymphocyte surveillance of other secondary lymphoid organs, such as peripheral lymph nodes (LNs), has remained unclear. Here, we report that while dasatinib treatment selectively disrupted in vitro chemotaxis of B but not T cells, it caused a substantial, transient reduction of the in vivo interstitial motility in both subsets. The broad in vivo inhibition of T and B cell motility correlated with dasatinib-induced vasoconstriction of blood vessels and increased hypoxia within LNs. Pharmacological inhibition of the contraction-promoting factor Rho-associated coiled-coil kinase (ROCK) reversed dasatinib-induced LN hypoxia and rescued CD8\n                    <jats:sup>+<\/jats:sup>\n                    T cell motility. Last, dasatinib treatment delayed but did not inhibit dendritic cell\u2013mediated CD8\n                    <jats:sup>+<\/jats:sup>\n                    T cell activation and proliferation within LNs. Overall, our findings uncover a dasatinib-induced transient disruption of the local adaptive immune system, which is distinct from the previously observed spleen contraction. From a clinical point of view, the disruption-recovery cycle of physiological immune surveillance induced by daily dasatinib treatment does not appear to cause a substantial impairment of key pathways underpinning CD8\n                    <jats:sup>+<\/jats:sup>\n                    T cell activation.\n                  <\/jats:p>","DOI":"10.1126\/sciadv.aec5951","type":"journal-article","created":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T18:01:42Z","timestamp":1785952902000},"update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":1,"title":["Dasatinib reversibly disrupts T cell motility and activation in lymph nodes"],"prefix":"10.1126","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2348-3378","authenticated-orcid":true,"given":"Daniela Claudino","family":"Carvoeiro","sequence":"first","affiliation":[{"name":"Department of Oncology, Microbiology, and Immunology, University of Fribourg, Fribourg, 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