Cutting edge: the pathogenicity of IFN-γ-producing Th17 cells is independent of T-bet.

Cutting edge: the pathogenicity of IFN-γ-producing Th17 cells is independent of T-bet.
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DOI:
10.4049/jimmunol.1203172
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发表时间:
2013-05-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Bettelli E
Bettelli E
中科院分区:
其他
文献类型:
--
作者:
Duhen R;Glatigny S;Arbelaez CA;Blair TC;Oukka M;Bettelli E

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在实验性自身免疫性脑脊髓炎(EAE)的发展过程中,致病性和髓磷脂特异性细胞在cns浸润细胞因子产生辅助性T (Th)细胞中的比例是未知的。使用IL-17A-IFN-γ双报告小鼠和I-Ab/ MOG38-49四聚体,我们在这里发现IL-17+ IFN-γ+ Th细胞在EAE期间在中枢神经系统中扩增,在mog特异性T细胞中高度富集。我们进一步证明,IL-23对于独立于th1相关转录因子T-bet、STAT1和STAT4产生IFN-γ的Th17细胞的产生和扩增至关重要。此外,Th17和IL-17+ IFN-γ+ Th细胞可以独立于T-bet诱导中枢神经系统自身免疫。虽然T-bet对Th1介导的EAE至关重要,但T-bet对于Th17细胞介导的自身免疫是必不可少的。我们的研究结果表明,在Th1和Th17细胞中存在不同的表观遗传程序来调节IFN-γ的表达。
During the development of experimental autoimmune encephalomyelitis (EAE), the proportion of pathogenic and myelin-specific cells within CNS-infiltrating cytokine producing T helper (Th) cells is unknown. Using an IL-17A-IFN-γ double reporter mouse and I-Ab/MOG38–49 tetramer, we show here that IL-17+ IFN-γ+ Th cells, which are expanded in the CNS during EAE, are highly enriched in MOG-specific T cells. We further demonstrate that IL-23 is essential for the generation and expansion of IFN-γ producing Th17 cells independently of the Th1-associated transcription factors T-bet, STAT1 and STAT4. Furthermore, Th17 and IL-17+ IFN-γ+ Th cells can induce CNS autoimmunity independently of T-bet. While T-bet is crucial for Th1 mediated EAE T-bet is dispensable for Th17 cell-mediated autoimmunity. Our results suggest the existence of different epigenetic programs that regulate IFN-γ expression in Th1 and Th17 cells.
T-BET的丧失,但不是STAT1阻止了实验性自身免疫性脑脊髓炎的发展。
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