Control of T(H)17/T(reg) balance by hypoxia-inducible factor 1.

Control of T(H)17/T(reg) balance by hypoxia-inducible factor 1.
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DOI:
10.1016/j.cell.2011.07.033
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发表时间:
2011-09-02
期刊:
影响因子:
64.5
通讯作者:
Pan F
Pan F
中科院分区:
生物学1区
文献类型:
--
作者:
Dang EV;Barbi J;Yang HY;Jinasena D;Yu H;Zheng Y;Bordman Z;Fu J;Kim Y;Yen HR;Luo W;Zeller K;Shimoda L;Topalian SL;Semenza GL;Dang CV;Pardoll DM;Pan F

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T细胞分化成不同的功能效应子和抑制性亚群部分地受抗原识别时存在的细胞因子环境调节。在这里,我们表明,缺氧诱导因子1(HIF-1),一个关键的代谢传感器,调节T调节(Treg)和TH 17分化之间的平衡。HIF-1α通过RORvt的直接转录激活,以及通过与RORvt和p300募集到IL 17启动子的三级复合物形成,从而调节TH 17特征基因,来增强TH 17的发育。同时,HIF-1α通过结合Foxp 3并靶向其进行蛋白酶体降解来减弱Treg的发育。重要的是,这种调节发生在常氧和缺氧条件下。具有HIF-1α缺陷型T细胞的小鼠对与减少的TH 17和增加的Treg细胞相关的TH 17依赖性实验性自身免疫性脑炎的诱导具有抗性。这些发现强调了代谢线索在T细胞命运决定中的重要性,并表明代谢调节可以改善某些基于T细胞的免疫病理。
T cell differentiation into distinct functional effector and inhibitory subsets is regulated in part by the cytokine environment present at the time of antigen recognition. Here, we show that hypoxia-inducible factor 1 (HIF-1), a key metabolic sensor, regulates the balance between T regulatory (Treg) and TH17 differentiation. HIF-1α enhances TH17 development through direct transcriptional activation of RORvt, and via tertiary complex formation with RORvt and p300 recruitment to the IL17 promoter, thereby regulating TH17 signature genes. Concurrently, HIF-1α attenuates Treg development by binding Foxp3 and targeting it for proteasomal degradation. Importantly this regulation occurs under both normoxic and hypoxic conditions. Mice with HIF-1α deficient T cells are resistant to induction of TH17-dependent experimental autoimmune encephalitis associated with diminished TH17 and increased Treg cells. These findings highlight the importance of metabolic cues in T cell fate determination and suggest that metabolic modulation could ameliorate certain T cell-based immune pathologies.
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