CD8 T cell quiescence revisited.

CD8 T cell quiescence revisited.
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DOI:
10.1016/j.it.2012.01.007
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发表时间:
2012-05
影响因子:
16.8
通讯作者:
Jameson SC
Jameson SC
中科院分区:
医学1区
文献类型:
--
作者:
Hamilton SE;Jameson SC

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幼稚T细胞通常被认为处于默认的静止状态,而记忆T细胞经历基础增殖,并在受到刺激时迅速表现出效应子反应。然而,在过去的几年里,一个更复杂的画面出现了,有证据表明,幼稚T细胞的静止是积极实施的,幼稚T细胞之间的异质性影响了它们响应稳态线索而逃避静止的能力。此外,记忆T细胞的激活状态也可能被指示,需要与树突细胞接触以避免回复到静止状态。在这里,我们讨论了这些新发现,并提出初始和记忆T细胞的静止状态比之前想象的更具灵活性。
Naïve T cells are typically considered to be in a default state of quiescence, while memory T cells undergo basal proliferation and quickly exhibit effector responses when stimulated. Over the last few years, however, a more complex picture has emerged, with evidence that naive T cell quiescence is actively enforced, and that heterogeneity among naïve T cells influences their capacity to escape quiescence in response to homeostatic cues. Furthermore, the active state of memory T cells may also be instructed, requiring contact with dendritic cells to avoid reversion to quiescence. Here we discuss these new findings and propose that there is much more flexibility in the quiescent state of naïve and memory T cells than previously thought.
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