Journal
TRENDS IN BIOCHEMICAL SCIENCES
Volume 43, Issue 2, Pages 108-123Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tibs.2017.11.008
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Funding
- Robertson Foundation/Cancer Research Institute fellowship
- Jane Coffin Childs Fund fellowship
- Howard Hughes Medical Institute
- National Institutes of Health (NIH) [NIAID PO1 AI091580]
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The mechanisms by which a T cell detects antigen using its T cell antigen receptor (TCR) are crucial to our understanding of immunity and the harnessing of T cells therapeutically. A hallmark of the T cell response is the ability of T cells to quantitatively respond to antigenic ligands derived from pathogens while remaining inert to similar ligands derived from host tissues. Recent studies have revealed exciting properties of the TCR and the behaviors of its signaling effectors that are used to detect and discriminate between antigens. Here we highlight these recent findings, focusing on the proximal TCR signaling molecules Zap70, Lck, and LAT, to provide mechanistic models and insights into the exquisite sensitivity and specificity of the TCR.
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