Regulation of peripheral Th/Treg differentiation and suppression of airway inflammation by Nr4a transcription factors.

Regulation of peripheral Th/Treg differentiation and suppression of airway inflammation by Nr4a transcription factors.
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DOI:
10.1016/j.isci.2021.102166
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发表时间:
2021-03-19
期刊:
影响因子:
5.8
通讯作者:
Takaki S
Takaki S
中科院分区:
综合性期刊2区
文献类型:
--
作者:
Sekiya T;Kagawa S;Masaki K;Fukunaga K;Yoshimura A;Takaki S

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辅助性 T (Th) 和调节性 T (Treg) 细胞分化计划可促进病原体的根除,同时最大限度地减少不良免疫反应。在这里,我们发现 Nr4a 核受体家族支持 Treg 细胞诱导并抑制 Th1 和 Th2 细胞从初始 CD4+ T 细胞分化。 Nr4a 因子在抗原刺激后立即在 CD4+ T 细胞中短暂诱导,从而介导表观遗传变化。在分化 Treg 细胞时,Nr4a 因子主要上调 Treg 细胞特异性基因集中的早期反应基因,直接上调或与 Ets 家族转录因子配合上调。相比之下,Nr4a 因子通过中断 Batf 因子表达的正反馈回路来抑制 AP-1 活性,从而抑制 Th2 细胞相关基因。在过敏性气道炎症模型中,Nr4a 因子抑制发病机制,介导口服耐受。最后,工程化 Nr4a 分子的药理学激活可预防过敏性气道炎症,表明 Nr4a 因子可能是炎症性疾病的新治疗靶点。在“Treg 特征基因”中,Nr4a 因子主要诱导早期反应 Nr4a 因子直接或通过支持 Ets 因子的功能激活靶基因 Nr4a 因子抑制 Th2 驱动的 Batf 因子表达正反馈环 Nr4a 因子活性的药理学激活可预防气道炎症 生物科学;免疫学;细胞生物学
Helper T (Th) and regulatory T (Treg) cell differentiation programs promote the eradication of pathogens, while minimizing adverse immune reactions. Here, we found that Nr4a family of nuclear receptors supports Treg cell induction and represses Th1 and Th2 cell differentiation from naive CD4+ T cells. Nr4a factors are transiently induced in CD4+ T cells immediately after antigen stimulation, thereby mediating epigenetic changes. In differentiating Treg cells, Nr4a factors mainly upregulated the early responsive genes in the Treg cell-specifying gene set, either directly or in cooperation with Ets family transcription factors. In contrast, Nr4a factors repressed AP-1 activity by interrupting a positive feedback loop for Batf factor expression, thus suppressing Th2 cell-associated genes. In an allergic airway inflammation model, Nr4a factors suppressed the pathogenesis, mediating oral tolerance. Lastly, pharmacological activation of an engineered Nr4a molecule prevented allergic airway inflammation, indicating that Nr4a factors may be novel therapeutic targets for inflammatory diseases. Among “Treg signature genes”, Nr4a factors mainly induce early responsive ones Nr4a activate target genes directly or by supporting Ets factors' function Nr4a factors repress Th2-driving positive feedback loop for Batf factor expression Pharmacological activation of Nr4a factors' activity prevented airway inflammation Biological Sciences; Immunology; Cell Biology
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