HEB is required for the specification of fetal IL-17-producing γδ T cells.

HEB is required for the specification of fetal IL-17-producing γδ T cells.
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DOI:
10.1038/s41467-017-02225-5
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发表时间:
2017-12-08
影响因子:
16.6
通讯作者:
Anderson MK
Anderson MK
中科院分区:
综合性期刊1区
文献类型:
--
作者:
In TSH;Trotman-Grant A;Fahl S;Chen ELY;Zarin P;Moore AJ;Wiest DL;Zúñiga-Pflücker JC;Anderson MK

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产生IL-17的γδT(γδT17)细胞是天然免疫系统的重要组成部分。然而,控制它们发育的基因网络尚不清楚。在这里,我们证明了Heb(HeLa E盒结合蛋白,由TCF12编码)是产生新定义的胎儿来源的CD73−γδT17细胞亚集所必需的。在未成熟的CD2 4+CD73的−γδT细胞中,SOX4、SOX13和RORC的表达需要Heb,而这些基因被Heb拮抗剂ID3的急性表达所抑制。Heb缺乏也会影响成熟的CD73+γδT细胞,它们缺乏RoRγt的表达和IL-17的产生。此外,胎儿TcRγ链谱系发生改变,外周Vγ4γδT细胞主要局限于Heb缺陷小鼠产生干扰素γ的表型。因此,我们的工作确定了CD73+和CD73−γδT17细胞的发育依赖于Heb的途径,并为Heb控制γδT17基因网络提供了机制证据。γδT细胞库包括大量产生IL-17的细胞,这些细胞保护粘膜表面,但控制γδT细胞规格的信号尚不清楚。在这里,作者确定了转录因子Heb和ID3的拮抗活性在这些细胞的发育中的作用。
IL-17-producing γδ T (γδT17) cells are critical components of the innate immune system. However, the gene networks that control their development are unclear. Here we show that HEB (HeLa E-box binding protein, encoded by Tcf12) is required for the generation of a newly defined subset of fetal-derived CD73− γδT17 cells. HEB is required in immature CD24+CD73− γδ T cells for the expression of Sox4, Sox13, and Rorc, and these genes are repressed by acute expression of the HEB antagonist Id3. HEB-deficiency also affects mature CD73+ γδ T cells, which are defective in RORγt expression and IL-17 production. Additionally, the fetal TCRγ chain repertoire is altered, and peripheral Vγ4 γδ T cells are mostly restricted to the IFNγ-producing phenotype in HEB-deficient mice. Therefore, our work identifies HEB-dependent pathways for the development of CD73+ and CD73− γδT17 cells, and provides mechanistic evidence for control of the γδT17 gene network by HEB. The γδ T cell pool includes abundant IL-17-producing cells that protect mucosal surfaces, but the signals that control γδ T cell specification are unclear. Here the authors identify a role for the transcription factor HEB, and antagonistic activity of Id3, in the development of these cells.
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