E2F1 调解SOX17 缺陷诱导的肺高血压
Dan Yi1,2,3, Bin Liu1,2,3, Hongxu Ding4
1Division of Pulmonary, Critical Care and Sleep (D.Y., B.L., S.L., R.L., J.P., K.R., X.X., K.S.K., Z.D.), University of Arizona, Phoenix.
Hypertension (Dallas, Tex. : 1979)
|September 22, 2023
概括
在肺高血压患者中发现的内皮SOX17缺乏,通过E2F1信号驱动疾病的进展. 准E2F1为肺动脉高血压 (PAH) 提供了一个潜在的治疗策略.
科学领域:
- 心血管研究研究心血管研究
- 肺部医学 肺部医学
- 遗传学 是一个遗传学.
背景情况:
- SOX17 (SRY盒转录因子17) 的罕见遗传变异与异常性肺动脉高血压 (PAH) 有关.
- SOX17基因变异在PAH病原发生的确切作用尚不清楚.
研究的目的:
- 研究SOX17在肺动脉高血压 (PAH) 中的作用.
- 阐明SOX17缺乏导致PAH的分子机制.
主要方法:
- 在人类异常性PAH肺部和肺内皮细胞 (ECs) 中评估了SOX17表达.
- 产生了EC特异性Sox17删除的小鼠,以研究PAH病原性.
- 使用单细胞RNA测序和RNA测序分析.
- 研究了E2F1 (E2F转录因子1) 信号传递的作用,并测试了一种E2F1抑制剂.
主要成果:
- 在异常性PAH肺部和肺部EC中,SOX17表达显著下调.
- 在小鼠中,EC特定的Sox17缺失诱导轻度肺高血压,并加剧了缺氧诱导的PAH.
- 在EC中SOX17的损失导致内皮功能障碍,包括细胞循环的改变,增殖,细胞亡,膜信号传递和BMP信号传递受损.
- E2F1信号介导SOX17缺乏引起的EC功能障碍,其抑制减轻了小鼠的PAH发展.
结论:
- 内皮SOX17缺乏是通过E2F1信号传递导致肺高血压的关键驱动因素.
- 针对E2F1信号提供了一个有希望的治疗途径为肺动脉高血压 (PAH) 患者.
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