Journal
FRONTIERS IN IMMUNOLOGY
Volume 6, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fimmu.2015.00509
Keywords
Crk adaptor proteins; signal transduction; T lymphocytes; cell adhesion; cell migration; immunophilins; cyclophilin A; cyclosporin A
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Funding
- USA-Israel Binational Science Foundation
- Israel Science Foundation
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Crk adaptor proteins are key players in signal transduction from a variety of cell surface receptors. They are involved in early steps of lymphocyte activation through their SH2-mediated transient interaction with signal transducing effector molecules, such as Cbl, ZAP-70, CasL, and STAT5. In addition, they constitutively associate, via their SH3 domain, with effector molecules, such as C3G, that mediate cell adhesion and regulate lymphocyte extravasation and recruitment to sites of inflammation. Recent studies demonstrated that the conformation and function of Crkll is subjected to a regulation by immunophilins, which also affect Crkll-dependent T-cell adhesion to fibronectin and migration toward chemokines. This article addresses mechanisms that regulate Crkll conformation and function, in general, and emphasizes the role of Crk proteins in receptor-coupled signaling pathways that control T-lymphocyte adhesion and migration to inflammatory sites.
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