Emerging Concepts in TCR Specificity: Rationalizing and (Maybe) Predicting Outcomes.

Emerging Concepts in TCR Specificity: Rationalizing and (Maybe) Predicting Outcomes.
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DOI:
10.4049/jimmunol.1700744
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发表时间:
2017-10-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Baker BM
Baker BM
中科院分区:
其他
文献类型:
--
作者:
Singh NK;Riley TP;Baker SCB;Borrman T;Weng Z;Baker BM

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T cell specificity emerges from a myriad of processes, ranging from the biological pathways that control T cell signaling to the structural and physical mechanisms that influence how TCRs bind antigen/MHC. Of these processes, the binding specificity of the TCR is a key component. However, TCR specificity is enigmatic: TCRs are at once specific but also cross-reactive. Although long-appreciated, this duality continues to puzzle immunologists and has implications for the development of TCR-based therapeutics. Here we review TCR specificity, emphasizing results that have emerged from structural and physical studies of TCR binding. We show how the TCR specificity/cross-reactivity duality can be rationalized from structural and biophysical principles. There is excellent agreement between predictions from these principles and classic predictions about the scope of TCR cross-reactivity. We demonstrate how these same principles can also explain amino acid preferences in immunogenic epitopes and highlight opportunities for structural considerations in predictive immunology.
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