通过激活AMPK/Nrf2信号传导,CTRP9减轻了因低氧/低氧化诱导的人类胎盘血管内皮细胞损伤和线粒体功能障碍
Lin Zhu1, Shaolei Chen1, Xulei Dai2
1Department of Nursing, Shandong College of Traditional Chinese Medicine, Yantai, Shandong 264199, China.
Tissue & cell
|September 29, 2023
概括
与C1q/TNF相关的蛋白9 (CTRP9) 通过AMPK/Nrf2通路保护胎盘血管内皮细胞功能和线粒体健康,从而防止妊娠引起的高血压 (PIH). 这表明CTRP9是PIH的潜在治疗点.
科学领域:
- 产科和妇科 产科和妇科
- 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:
- 怀孕引起的高血压 (PIH) 对母亲和胎儿的健康构成重大风险.
- 了解PIH背后的分子机制对于开发有效的治疗方法至关重要.
研究的目的:
- 研究C1q/TNF相关蛋白9 (CTRP9) 在PIH分子病原发生中的作用.
- 探索CTRP9作为PIH治疗剂的潜力.
主要方法:
- 在实验室中建立了一个PIH模型,使用经过低氧/低氧化 (H/R) 的人类胎盘血管内皮细胞 (HPVEC).
- 调节了CTRP9的表达,并评估了它对细胞活力,细胞亡,迁移和血管生成的影响.
- 评估了线粒体功能,包括膜潜力,活性氧物种 (ROS) 和线粒体DNA (mtDNA) 拷贝数.
- 使用化合物C (CC),一种AMPK抑制剂,研究了AMPK/Nrf2信号通路的参与.
主要成果:
- 发现CTRP9表达在H/R诱导的HPVEC中被降低.
- 过度表达CTRP9减弱了H/R诱导的细胞损伤,包括减少活力,亡,以及受损的迁移和血管生成.
- 通过改善线粒体膜潜力,减少ROS产量和增加mtDNA拷贝数量,CTRP9改善了线粒体功能障碍.
- CTRP9激活了AMPK/Nrf2信号通路,这种激活对其保护作用至关重要,正如CC治疗时CTRP9功能减弱所示.
结论:
- CTRP9对胎盘血管内皮细胞的H/R诱导损伤产生保护作用.
- 这些保护机制取决于AMPK/Nrf2信号通路的激活.
- CTRP9代表了一个有前途的治疗候选人,用于管理妊娠引起的高血压.
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