聚乙烯通过抑制内皮细胞到介质细胞的过渡来减轻实验性肺动脉高血压
Jie Wang1,2, Yu Zhang1,2, Junjun Liu1,2
1Department of Geriatric Medicine and Laboratory of Gerontology and Anti-Aging Research, Qilu Hospital of Shandong University, Jinan, Shandong, China.
聚乙烯 (PTE) 通过减少血管重塑,有效地治疗大鼠的肺动脉高血压 (PAH). 这种天然化合物通过HMGA下调来抑制内皮细胞到介质细胞的过渡 (EndMT),提供作为补充PAH治疗的潜力.
科学领域:
- 心血管研究研究心血管研究
- 药理学 药理学是指药理学的学科.
- 分子生物学分子生物学
背景情况:
- 肺动脉高血压 (PAH) 涉及血管改造,这是一个尚未完全理解自然化合物效应的过程.
- 固醇 (PTE) 是一种天然化合物,对心血管有好处,但它对PAH相关的血管改造的影响需要研究.
研究的目的:
- 在大鼠中研究PTE对单氨酸 (MCT) 诱导的PAH的治疗作用.
- 探索PTE在人类肺动脉内皮细胞 (hPAECs) 中对内皮细胞转化为介质细胞 (EndMT) 的作用的潜在分子机制.
主要方法:
- 在Sprague-Dawley大鼠中使用单克罗他林 (MCT) 诱导实验性PAH,组接受载体或PTE治疗.
- 在hPAEC中使用生长因子和细胞因子的组合建模EndMT;采用全基因组mRNA测序.
主要成果:
- 在PAH大鼠中,PTE治疗降低了右心室缩压和缩,缓解了肺动脉重塑.
- PTE显著降低了高流动性组AT-hook 2 (HMGA2) 表达的表达,这是EndMT的一个关键因素.
- PTE减弱了EndMT标记物,减少了氧化的产生,并调节了亲纤维细胞基因表达,同时在体内恢复了·维勒布兰德因子.
结论:
- 固醇可通过抑制HMGA介导的EndMT来缓解PAH和大鼠的血管重塑.
- PTE显示出作为治疗肺动脉高血压的补充治疗剂的潜力.
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