Tec Family Kinases Modulate Thresholds for Thymocyte Development and Selection
نویسندگان
چکیده
منابع مشابه
Tec Family Kinases Modulate Thresholds for Thymocyte Development and Selection
Tec family kinases are implicated in T cell receptor (TCR) signaling, and combined mutation of inducible T cell kinase (Itk) and resting lymphocyte kinase (Rlk)/Txk in mice dramatically impairs mature T cell function. Nonetheless, mutation of these kinases still permits T cell development. While itk(-)(/)- mice exhibit mild reductions in T cells with decreased CD4/CD8 cell ratios, rlk(-)(/)-itk...
متن کاملA Role for the Tec Family Tyrosine Kinase Txk in T Cell Activation and Thymocyte Selection
Recent data indicate that several members of the Tec family of protein tyrosine kinases function in antigen receptor signal transduction. Txk, a Tec family protein tyrosine kinase, is expressed in both immature and mature T cells and in mast cells. By overexpressing Txk in T cells throughout development, we found that Txk specifically augments the phospholipase C (PLC)-gamma1-mediated calcium s...
متن کاملBeyond calcium: new signaling pathways for Tec family kinases.
The Tec kinases represent the second largest family of mammalian non-receptor tyrosine kinases and are distinguished by the presence of distinct proline-rich regions and pleckstrin homology domains that are required for proper regulation and activation. Best studied in lymphocyte and mast cells, these kinases are critical for the full activation of phospholipase-C gamma (PLC-gamma) and Ca(2+) m...
متن کاملThymus-derived glucocorticoids set the thresholds for thymocyte selection by inhibiting TCR-mediated thymocyte activation.
Selection processes in the thymus eliminate nonfunctional or harmful T cells and allow the survival of those cells with the potential to recognize Ag in association with self-MHC-encoded molecules (Ag/MHC). We have previously demonstrated that thymus-derived glucocorticoids antagonize TCR-mediated deletion, suggesting a role for endogenous thymic glucocorticoids in promoting survival of thymocy...
متن کاملEssential roles for the Tec family kinases Tec and Btk in M-CSF receptor signaling pathways that regulate macrophage survival.
Tec family kinases have important roles in lymphocytes; however, little is known about their function in monocytes/macrophages. In this study we report that Tec family kinases are essential for M-CSF (M-CSF)-induced signaling pathways that regulate macrophage survival. Compared with wild-type bone marrow-derived macrophage (BMM) cultures, Tec(-/-)Btk(-/-) BMM cultures displayed increased cell d...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Experimental Medicine
سال: 2000
ISSN: 0022-1007,1540-9538
DOI: 10.1084/jem.192.7.987