USP21 prevents the generation of T-helper-1-like Treg cells.

USP21 prevents the generation of T-helper-1-like Treg cells.
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USP21 阻止 T-helper-1 样 Treg 细胞的产生

DOI:
10.1038/ncomms13559
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发表时间:
2016-11-18
影响因子:
16.6
通讯作者:
Li, Bin
Li, Bin
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Li, Yangyang;Lu, Yue;Wang, Shuaiwei;Han, Zhijun;Zhu, Fuxiang;Ni, Yingmeng;Liang, Rui;Zhang, Yan;Leng, Qibin;Wei, Gang;Shi, Guochao;Zhu, Ruihong;Li, Dan;Wang, Haikun;Zheng, Song Guo;Xu, Hongxi;Tsun, Andy;Li, Bin

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Foxp3+调节性T(Treg)细胞在维持免疫动态平衡和耐受中起着关键作用。Foxp3的表达中断会导致不稳定Treg细胞的产生和效应器T细胞样功能的获得。在这里,我们报告了E3去泛素酶USP21在蛋白水平上阻止FOXP3的耗尽,并限制T-helper-1样Treg细胞的产生。在Treg细胞中特异性缺失Usp21的小鼠表现出免疫紊乱,其特征是自发的T细胞激活和过度的T辅助1型(Th1)倾斜Treg细胞成为Th1样Treg细胞。USP21通过介导FOXP3蛋白的去泛素化来稳定FOXP3蛋白,并维持Treg信号基因的表达。我们的结果证明了USP21如何在体内防止FOXP3蛋白耗尽和控制Treg谱系的稳定性。调节性T(Treg)细胞的免疫抑制作用在很大程度上取决于它们表达转录因子FOXP3的优点。在这里,作者证明了E3去泛素酶USP21通过介导其去泛素化来稳定FOXP3,并有助于维持小鼠Treg特征基因的表达和Treg谱系的稳定性。
FOXP3+ Regulatory T (Treg) cells play a key role in the maintenance of immune homeostasis and tolerance. Disruption of Foxp3 expression results in the generation of instable Treg cells and acquisition of effector T-cell-like function. Here we report that the E3 deubiquitinase USP21 prevents the depletion of FOXP3 at the protein level and restricts the generation of T-helper-1-like Treg cells. Mice depleted of Usp21 specifically in Treg cells display immune disorders characterized by spontaneous T-cell activation and excessive T-helper type 1 (Th1) skewing of Treg cells into Th1-like Treg cells. USP21 stabilizes FOXP3 protein by mediating its deubiquitination and maintains the expression of Treg signature genes. Our results demonstrate how USP21 prevents FOXP3 protein depletion and controls Treg lineage stability in vivo. The immunosuppressive role of regulatory T (Treg) cells largely depends on their virtue of expressing the transcription factor FOXP3. Here the authors show that the E3 deubiquitinase USP21 stabilizes FOXP3 by mediating its deubiquitination and helps to maintain the expression of Treg signature genes and Treg lineage stability in mice.
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