期刊
IMMUNITY
卷 23, 期 4, 页码 445-458出版社
CELL PRESS
DOI: 10.1016/j.immuni.2005.09.012
关键词
-
类别
资金
- Intramural NIH HHS Funding Source: Medline
- NIAID NIH HHS [AI41035] Funding Source: Medline
The intrinsic refractoriness of naive T cells for cytokine production is counteracted by cells of the innate immune system. Upon sensing danger via Toll-like receptors, these cells upregulate T cell costimulatory molecules and secrete cytokines that enhance T cell activation. We show that cytokine-mediated priming of naive T cells requires the NF-kappa B family member c-Rel. In resting naive cells c-Rel is associated primarily with I kappa B beta, an inhibitory molecule that is not effectively degraded by TCR signals. Exposure of T cells to proinflammatory cytokines, TNF-alpha and IL-1 beta, shifts c-Rel to I kappa B alpha-associated complexes that are readily targeted by the TCR. As a consequence, IL-2 and IFN-gamma mRNA are produced more quickly, and at higher levels, in cytokine-primed T cells. This mechanism does not operate in effector T cells where cytokine gene expression is c-Rel-independent. We propose that c-Rel plays a crucial role as a target of innate signals in T cells.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据