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Deprecated: Implicit conversion from float 261.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Proc+Natl+Acad+Sci+U+S+A 2016 ; 113 (43): E6630-8 Nephropedia Template TP
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Architecture of a minimal signaling pathway explains the T-cell response to a 1 million-fold variation in antigen affinity and dose #MMPMID27702900
Lever M; Lim HS; Kruger P; Nguyen J; Trendel N; Abu-Shah E; Maini PK; van der Merwe PA; Dushek O
Proc Natl Acad Sci U S A 2016[Oct]; 113 (43): E6630-8 PMID27702900show ga
T cells initiate and regulate adaptive immune responses when their T-cell antigen receptors recognize antigens. The T-cell response is known to depend on the antigen affinity/dose, but the precise relationship, and the mechanisms underlying it, are debated. To resolve the debate, we stimulated T cells with antigens spanning a 1 million-fold range in affinity/dose. We found that a different antigen (and hence different affinity) produced the largest T-cell response at different doses. Using model identification algorithms, we report a simple mechanistic model that can predict the T-cell response from the physiological low-affinity regime into the high-affinity regime applicable to therapeutic receptors.