alexa Sustained interactions between T cell receptors and antigens promote the differentiation of CD4⁺ memory T cells.


Immunogenetics: Open Access

Author(s): Kim C, Wilson T, Fischer KF, Williams MA, Kim C, Wilson T, Fischer KF, Williams MA

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Abstract During CD4⁺ T cell activation, T cell receptor (TCR) signals impact T cell fate, including recruitment, expansion, differentiation, trafficking, and survival. To determine the impact of TCR signals on the fate decision of activated CD4⁺ T cells to become end-stage effector or long-lived memory T helper 1 (Th1) cells, we devised a deep-sequencing-based approach that allowed us to track the evolution of TCR repertoires after acute infection. The transition of effector Th1 cells into the memory pool was associated with a significant decrease in repertoire diversity, and the major histocompatibility complex (MHC) class II tetramer off rate, but not tetramer avidity, was a key predictive factor in the representation of individual clonal T cell populations at the memory stage. We conclude that stable and sustained interactions with antigens during the development of Th1 responses to acute infection are a determinative factor in promoting the differentiation of Th1 memory cells. Copyright © 2013 Elsevier Inc. All rights reserved.
This article was published in Immunity and referenced in Immunogenetics: Open Access

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