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. 2016 Aug 16;45(2):415-27.
doi: 10.1016/j.immuni.2016.07.021.

T Cell Factor 1-Expressing Memory-like CD8(+) T Cells Sustain the Immune Response to Chronic Viral Infections

Daniel T Utzschneider  1 , Mélanie Charmoy  2 , Vijaykumar Chennupati  2 , Laurène Pousse  2 , Daniela Pais Ferreira  2 , Sandra Calderon-Copete  3 , Maxime Danilo  2 , Francesca Alfei  1 , Maike Hofmann  4 , Dominik Wieland  5 , Sylvain Pradervand  3 , Robert Thimme  4 , Dietmar Zehn  6 , Werner Held  7
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"VSports最新版本" T Cell Factor 1-Expressing Memory-like CD8(+) T Cells Sustain the Immune Response to Chronic Viral Infections

Daniel T Utzschneider et al. Immunity. .
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Abstract

Chronic infections promote the terminal differentiation (or "exhaustion") of T cells and are thought to preclude the formation of memory T cells. In contrast, we discovered a small subpopulation of virus-specific CD8(+) T cells that sustained the T cell response during chronic infections VSports手机版. These cells were defined by, and depended on, the expression of the transcription factor Tcf1. Transcriptome analysis revealed that this population shared key characteristics of central memory cells but lacked an effector signature. Unlike conventional memory cells, Tcf1-expressing T cells displayed hallmarks of an "exhausted" phenotype, including the expression of inhibitory receptors such as PD-1 and Lag-3. This population was crucial for the T cell expansion that occurred in response to inhibitory receptor blockade during chronic infection. These findings identify a memory-like T cell population that sustains T cell responses and is a prime target for therapeutic interventions to improve the immune response in chronic infections. .

Keywords: LCMV; PD-1; T cell exhaustion; T cell memory; Tcf1; chronic infection; differentiation of cytotoxic T cells. V体育安卓版.

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