在肺高血压中,THBS1调解缺氧驱动的EndMT
Bingming Peng1,2,3, Yingzhen Zhou1,2,3, Xingmeng Fu1,2,3
1Department of Respiratory, Thoracic and Cardiac Surgery, Cardiovascular Medicine Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders Chongqing China.
血栓素1 (THBS1) 在肺高血压 (PH) 中驱动缺氧诱导的内皮细胞转化为介质细胞转化 (EndMT). 抑制THBS1逆转了EndMT,为先天性心脏病患者提供了对PH病理生理学的新见解.
科学领域:
- 心血管生物学 心血管生物学
- 肺高血压的病理生理学
- 细胞生物学 细胞生物学
背景情况:
- 长期的缺氧有助于在儿科肺高血压 (PH) 与先天性心脏病 (CHD) 相关的肺血管重塑.
- 内皮转移到介质细胞转变 (EndMT) 是PH相关的肺血管改造中的一个关键的病理过程.
研究的目的:
- 调查血栓素1 (THBS1) 和纤维素1 (FN1) 在肺高血压 (PH) 中因缺氧驱动的内皮转移到介质细胞转变 (EndMT) 中的作用.
- 探索THBS1作为一个潜在的治疗点来逆转PH的EndMT.
主要方法:
- 在儿科PH患者样本中分析蛋白质-蛋白质相互作用 (纤维素蛋白1与血栓蛋白1和转胺酶2).
- 利用LungMAP CellCards和热图来评估THBS1和FN1在人类肺动脉内皮细胞 (PAEC) 和小鼠肺组织中的表达.
- 使用SUHX诱导的PH小鼠模型和缺氧诱导的人类PAEC进行体内和体外THBS1和EndMT之间的关系研究.
主要成果:
- 在PH环境中观察到THBS1和FN1的显著升高.
- 已经证明缺氧会诱导EndMT.
- 证实抑制THBS1在体内和体外模型中有效逆转EndMT,验证了转录组发现.
结论:
- 血栓素1 (THBS1) 在肺高血压 (PH) 中,在催氧驱动的内皮转移到介质细胞转换 (EndMT) 中发挥关键作用.
- 抑制THBS1是一种有希望的策略,用于逆转PH中的EndMT.
- 这项研究为PH的病理生理学提供了新的见解,特别是在先天性心脏病的背景下.
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