STING调节了HIF1A对促炎性巨细胞表型转化为自身免疫性心肌炎的转化
Xiumeng Hua1, Mengni Bao2, Han Mo2
1Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials, Animal Experimental Centre, Fuwai Hospital, National Centre for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China; State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 167A Beilishi Road, Xi Cheng District, Beijing 100037, China; Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, National Clinical Research Center of Cardiovascular Diseases, State Key Laboratory of Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; The Cardiomyopathy Research Group at Fuwai Hospital.
干扰素基因刺激器 (STING) 通过通过缺氧诱导因子-1α (HIF1A) 激活巨细胞来驱动自身免疫性心肌炎. 向STING提供了一个潜在的治疗策略,用于心肌炎.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 心血管研究研究心血管研究
背景情况:
- 巨细胞是自身免疫性心肌炎发病的关键参与者.
- 导致自身免疫性心肌炎的精确分子机制在很大程度上是未知的.
研究的目的:
- 为了研究干扰素基因刺激器 (STING) 在自身免疫性心肌炎中的作用.
- 为了阐明涉及心脏炎症中的STING分子途径.
主要方法:
- 在BALB/c小鼠中的实验性自身免疫性心肌炎 (EAM) 模型.
- 心脏免疫细胞的单细胞RNA测序.
- 使用C-176.6进行STING的药理抑制.
- 在体外巨细胞激活研究.
- 对人类心肌炎心脏样本的分析.
主要成果:
- 在急性EAM期间,STING启动了前炎性巨细胞分化.
- STING激活与缺氧诱导因子-1α (HIF1A) 表达和巨细胞中单链DNA (ssDNA) 积累相关.
- 使用C-176的STING阻塞降低了炎症和促炎分子表达.
- ssDNA激活STING,这反过来又促进了巨驱动的炎症.
- 抑制HIF1A降低了与STING相关的心脏炎症.
- 在人类自身免疫性心肌炎样本中观察到升高的STING和ssDNA.
结论:
- 通过ssDNA激活的STING信号通路,通过HIF1A介导的炎症性巨细胞激活促进自身免疫性心肌炎的发展.
- STING代表了自身免疫性心肌炎的潜在治疗标.
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