?? T cell surveillance via CD1 molecules.

ABSTRACT: ?? T cells are a prominent epithelial-resident lymphocyte population, possessing multi-functional capacities in the repair of host tissue, pathogen clearance, and tumor surveillance. Although three decades have now passed since their discovery, the nature of ?? T cell receptor (TCR)-mediated ligand recognition remains poorly defined. Recent studies have provided structural insight into this recognition, demonstrating that ?? T cells survey both CD1 and the presented lipid, and in some cases are exquisitely lipid specific. We review these findings here, examining the molecular basis for and the functional relevance of this interaction. We discuss potential implications on the notion that non-classical major histocompatibility complex (MHC) molecules may function as important restricting elements of ?? TCR specificity, and on our understanding of ?? T cell activation and function.

SUBMITTER: Luoma AM 

PROVIDER: S-EPMC4383740 | biostudies-literature | 2014 Dec

REPOSITORIES: biostudies-literature