IFN-γ suppresses permissive chromatin remodeling in the regulatory region of the Il4 gene.

IFN-γ suppresses permissive chromatin remodeling in the regulatory region of the Il4 gene.
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DOI:
10.1016/j.cyto.2013.02.010
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发表时间:
2013-04
期刊:
影响因子:
3.8
通讯作者:
Huang, Hua
Huang, Hua
中科院分区:
医学3区
文献类型:
--
作者:
Nishida, Jun;Li, Yapeng;Zhuang, Yonghua;Huang, Zan;Huang, Hua

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为了发展最有效的1型辅助性T细胞(Th 1)免疫,初始CD 4 + T细胞必须获得表达IFN-γ的能力,同时沉默2型辅助性T细胞(Th 2)产生IFN-γ的潜力。已描述了一种I14基因沉默物。然而,人们并不完全理解消音器是如何工作的。在这项研究中,我们研究了IFN-γ是否可以抑制IL 4基因调控区的容许染色质重塑。我们证明IFN-γ抑制了IL 4基因内含子增强子区域的H3 K4二甲基化。IFN-γ介导的对容许性染色质重塑的抑制是IFN-γ受体、STAT 1和T-bet依赖性的。我们的研究揭示了Th 1细胞如何沉默IL 4基因的新机制。
In order to develop the most effective T helper type-1 (Th1) immunity, naïve CD4+ T cells must acquire the capacity to express IFN-γ while silencing T helper type-2 (Th2) cytokine-producing potential. An Il4 gene silencer has been described. However, it is not completely understood how the silencer works. In this study, we examined whether IFN-γ can suppress permissive chromatin remodeling of regulatory region of the Il4 gene. We demonstrate that IFN-γ suppressed H3K4 dimethylation at the intronic enhancer region of the Il4 gene. The IFN-γ-mediated suppression of permissive chromatin remodeling was IFN-γ receptor-, STAT1-, and T-bet-dependent. Our study reveals a novel mechanism of how Th1 cells silence the Il4 gene.
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发表时间: 2001-07-16
期刊: The Journal of experimental medicine
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