类IIa HDAC4 和 HDAC7 在 Th17 细胞分化中协同调节基因转录
Ka Lung Cheung1, Li Zhao2, Rajal Sharma1
1Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029.
概括
类IIa组胺脱乙酶 (HDAC4/7) 对于T-辅助17细胞的分化和功能至关重要. 向HDAC4/7可能治疗性结肠炎等炎症性疾病.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 二级组胺脱乙酶 (HDACs) 调节T细胞发育中的基因转录.
- HDACs的细胞特异性功能,特别是IIa类HDACs,仍然在很大程度上是未知的.
- 了解这些作用是解读T细胞分化途径的关键.
研究的目的:
- 调查IIa类HDACs,特别是Hdac4和Hdac7在T助手17 (Th17) 细胞分化中的作用.
- 阐明Hdac4和Hdac7调节Th17细胞系承诺的分子机制.
- 在Th17介导的炎症条件下评估向Hdac4/7的治疗潜力.
主要方法:
- 利用小鼠模型研究T细胞分化.
- 采用了Hdac4/7.4的遗传和药理抑制.
- 分析了基因转录和蛋白质相互作用,包括TF结合试验.
- 在大肠炎模型中评估Th17细胞功能.
主要成果:
- 在Th17细胞与原始CD4+T细胞分化过程中,Hdac4和Hdac7被选择性诱导.
- Hdac4与JunB相互作用,激活Th17特征基因 (例如Il17a/f).
- Hdac7与Aiolos和Ncor1-Hdac3合作抑制Th17负调节剂 (例如Il2).
- 在大肠炎模型中,抑制Hdac4/7可改善Th17介导的肠炎症.
结论:
- 在Th17细胞分化过程中,HDAC4和HDAC7在调节基因转录中发挥着不同的合作作用.
- 针对HDAC4/7为与Th17相关的炎症性疾病提供了潜在的治疗策略,包括性结肠炎.
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