Insight into the basis of autonomous immunoreceptor activation

被引：3

作者：

Berry, Richard ^{[2
]}

Chen, Zhenjun ^{[1
]}

McCluskey, James ^{[1
]}

Rossjohn, Jamie ^{[2
]}

机构：

[1] Univ Melbourne, Dept Microbiol & Immunol, Parkville, Vic 3010, Australia

[2] Monash Univ, Prot Crystallog Unit, Dept Biochem & Mol Biol, Sch Biomed Sci, Clayton, Vic 3800, Australia

来源：

TRENDS IN IMMUNOLOGY | 2011年 / 32卷 / 04期

基金：

澳大利亚研究理事会; 英国医学研究理事会;

关键词：

T-CELL-RECEPTOR; PRE-B; PT-ALPHA; SUBUNIT COMPOSITION; ALLELIC EXCLUSION; ANTIGEN RECEPTOR; BETA-CHAIN; LAMBDA-5; GENE; COMPLEX;

D O I：

10.1016/j.it.2011.01.007

中图分类号：

R392 [医学免疫学]; Q939.91 [免疫学];

学科分类号：

100102 ;

摘要：

Expression of the pre-T cell receptor (pTCR) by immature thymocytes is crucial for T cell development. The pTCR comprises an invariant pre-T alpha chain that pairs with a newly rearranged TCR beta chain and CD3 signaling components. Despite its similarity to the mature alpha beta TCR, which binds to specific peptide-loaded major histocompatibility molecules, the pTCR functions in a ligand-independent manner. Precisely how pTCR functions autonomously has remained a source of intense debate. Recently, the structure of the extracellular domain of the pTCR has been determined, providing insight into the mechanism of pTCR autonomous signaling. In this review, we reflect on the current understanding of pTCR function and draw comparisons to the mechanisms employed by the mature alpha beta TCR and the related pre-B cell receptor.

引用

页码：165 / 170

页数：6

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