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Semaphorins guide the entry of dendritic cells into the lymphatics by activating myosin II.
Nat. Immunol. 11, 594-560 (2010)
DOI Verlagsversion bestellen
The recirculation of leukocytes is essential for proper immune responses. However, the molecular mechanisms that regulate the entry of leukocytes into the lymphatics remain unclear. Here we show that plexin-A1, a principal receptor component for class III and class VI semaphorins, was crucially involved in the entry of dendritic cells (DCs) into the lymphatics. Additionally, we show that the semaphorin Sema3A, but not Sema6C or Sema6D, was required for DC transmigration and that Sema3A produced by the lymphatics promoted actomyosin contraction at the trailing edge of migrating DCs. Our findings not only demonstrate that semaphorin signals are involved in DC trafficking but also identify a previously unknown mechanism that induces actomyosin contraction as these cells pass through narrow gaps.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Leukocyte migration; Langerhans cells; Nodes; Plexin-A1; Integrin; Roles; Actin; Skin; Morphogenesis; Regeptiors
ISSN (print) / ISBN 1529-2908
Zeitschrift Nature Immunology
Quellenangaben Band: 11, Heft: 7, Seiten: 594-560
Verlag Nature Publishing Group
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Developmental Genetics (IDG)