热冲击因子1驱动调节性T细胞诱导,以限制小鼠肠道炎症
Colm B Collins1, Tom T Nguyen2, Robert S Leddy3
1Mucosal Inflammation Program University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition University of Colorado, Anschutz Medical Campus, Aurora, CO, USA; Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland.
Mucosal immunology
|November 9, 2023
概括
热冲击因子1 (HSF1) 在炎症期间促进调节性T细胞 (Treg) 发育和功能. 缺少HSF1会损害Tregs,而过度表达会增强Treg抑制能力,并防止肠道炎症.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 热冲击反应 (HSR) 是炎症过程和蛋白质平衡的组成部分.
- 热冲击因子1 (HSF1) 在激活CD4+T细胞时被上调,这表明它在免疫调节中的作用.
- 肠道平衡依赖于调节性T细胞 (Tregs) 和促炎性T细胞之间的平衡.
研究的目的:
- 调查HSF1在炎症期间在CD4+T细胞中促进前调节性表型的作用.
- 为了确定HSF1是否影响调节性T细胞 (Treg) 发育和功能.
- 探索HSF1作为潜在的炎症疾病治疗点.
主要方法:
- 使用细胞特异性HSF1淘汰和转基因小鼠模型.
- 采用了体外和体内技术,包括抗CD3和TGF-β刺激.
- 进行了染色体免疫沉 (ChIP),以评估HSF1与FoxP3基因的结合.
主要成果:
- 通过联合抗CD3和TGF-β刺激,增强了HSF1激活,酸化和核转位.
- HSF1直接与FoxP3基因结合,诱导其在CD4+T细胞中的表达.
- 缺少HSF1会降低Treg的发育和功能,而过度表达HSF1会增强Treg抑制活性.
- 在Tregs中过度表达HSF1,保护免受实验性肠炎 (肠炎).
结论:
- HSF1是调节性T细胞 (Treg) 发育和功能的关键促进者.
- HSF1在维持肠道平衡和预防炎症方面发挥着至关重要的作用.
- HSF1代表了一个有前途的治疗点,用于特征为Treg功能障碍的炎症性疾病.
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