Abstract
As an integral part of the mammalian immune system, a distributed network of tissues, cells, and extracellular factors, T lymphocytes perform and control a multitude of activities that collectively contribute to the effective establishment, maintenance, and restoration of tissue and organismal integrity. Development and function of T cells is controlled by the T cell receptor (TCR), a heterodimeric cell surface protein uniquely expressed on T cells. During T cell development, the TCR undergoes extensive somatic diversification that generates a diverse T cell repertoire capable of recognizing an extraordinary range of protein and nonprotein antigens presented in the context of major histocompatibility complex molecules (MHC). In this review, we provide an introduction to the TCR, describing underlying principles that position this molecule as a central regulator of the adaptive immune system involved in responses ranging from tissue protection and preservation to pathology and autoimmunity.
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Acknowledgments
This work was supported by NIH grants AG026518 and AI093637, JDRF CDA 2-2007-240 (DH) and American Heart Association grant 13SDG14510023 (ETC.).
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Clambey, E.T., Davenport, B., Kappler, J.W. et al. Molecules in medicine mini review: the αβ T cell receptor. J Mol Med 92, 735–741 (2014). https://doi.org/10.1007/s00109-014-1145-2
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DOI: https://doi.org/10.1007/s00109-014-1145-2