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Nat Immunol. 2006 Apr;7(4):411-7. Epub 2006 Feb 26.

Regulation of T cell development by the deubiquitinating enzyme CYLD.

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  • 1Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA.

Abstract

T cell receptor signaling is essential for the generation and maturation of T lymphocyte precursors. Here we identify the deubiquitinating enzyme CYLD as a positive regulator of proximal T cell receptor signaling in thymocytes. CYLD physically interacted with active Lck and promoted recruitment of active Lck to its substrate, Zap70. CYLD also removed both Lys 48- and Lys 63-linked polyubiquitin chains from Lck. Because of a cell-autonomous defect in T cell development, CYLD-deficient mice had substantially fewer mature CD4(+) and CD8(+) single-positive thymocytes and peripheral T cells.

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PMID:
16501569
[PubMed - indexed for MEDLINE]
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