期刊
IMMUNITY
卷 39, 期 2, 页码 347-356出版社
CELL PRESS
DOI: 10.1016/j.immuni.2013.07.014
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类别
资金
- National Institutes of Health [RO1 A0I76457, RO1 A0I41576]
- NERCE career development fellowship [U54 AI057159]
- Crohn's and Colitis Foundation of America [2813]
Many studies have examined pathways controlling effector T cell differentiation, but less is known about the fate of individual CD8(+) T cells during infection. Here, we examine the antiviral and antibacterial responses of single CD8(+) T cells from the polyclonal repertoire. The progeny of naive clonal CD8(+) T cells displayed unique profiles of differentiation based on extrinsic pathogen-induced environmental cues, with some clones demonstrating extreme bias toward a single developmental pathway. Moreover, even within the same animal, a single naive CD8(+) T cell exhibited distinct fates that were controlled by tissue-specific events. However, memory CD8(+) T cells relied on intrinsic factors to control differentiation upon challenge. Our results demonstrate that stochastic and instructive events differentially contribute to shaping the primary and secondary CD8(+) T cell response and provide insight into the underlying forces that drive effector differentiation and protective memory formation.
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