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Review
. 2016 Jun;37(6):375-385.
doi: 10.1016/j.it.2016.04.001. Epub 2016 Apr 27.

Memory CD8(+) T Cells: Innate-Like Sensors and Orchestrators of Protection

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Review

Memory CD8(+) T Cells: Innate-Like Sensors and Orchestrators of Protection

Grégoire Lauvau et al. Trends Immunol. 2016 Jun.

Abstract

Recent findings have revealed roles for systemic and mucosa-resident memory CD8(+) T cells in the orchestration of innate immune responses critical to host defense upon microbial infection. Here we integrate these findings into the current understanding of the molecular and cellular signals controlling memory CD8(+) T cell reactivation and the mechanisms by which these cells mediate effective protection in vivo. The picture that emerges presents memory CD8(+) T cells as early sensors of danger signals, mediating protective immunity both through licensing of cellular effectors of the innate immune system and via the canonical functions associated with memory T cells. We discuss implications for the development of T cell vaccines and therapies and highlight important areas in need of further investigation.

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Figure 1
Figure 1. Illustration of memory CD8+ T cell-reactivation and protective immune response
Schematic representation of the distinct phases and signals regulating pathogen-specific memory CD8+ T cell-reactivation and effective protection. Illustrated steps occur in secondary lymphoid organs, and for most part can be extended to mucosal tissues (See Review for specifics).

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