Krogsgaard Michelle, Juang Jeremy, Davis Mark M
Department of Pathology and NYU Cancer Institute, NYU School of Medicine, New York, NY 10016, USA.
Semin Immunol. 2007 Aug;19(4):236-44. doi: 10.1016/j.smim.2007.04.003. Epub 2007 Jun 4.
The mechanisms by which alphabeta T-cells are selected in the thymus and then recognize peptide MHC (pMHC) complexes in the periphery remain an enigma. Recent work particularly with respect to quantification of T-cell sensitivity and the role of self-ligands in T-cell activation has provided some important clues to the details of how TCR signaling might be initiated. Here, we highlight recent experimental data that provides insights into the initiation of T-cell activation and also discuss the main controversies and uncertainties in this area.
αβ T细胞在胸腺中被选择,然后在周围组织中识别肽-主要组织相容性复合体(pMHC)的机制仍然是个谜。最近的研究工作,特别是关于T细胞敏感性的量化以及自身配体在T细胞激活中的作用,为TCR信号可能如何启动的细节提供了一些重要线索。在这里,我们重点介绍了最近的实验数据,这些数据为T细胞激活的启动提供了见解,同时也讨论了该领域的主要争议和不确定性。