circMFN2 调节IGF2BP3-PDK4以改善肺高血压的作用
Shan-Shan Li1, Miao Guo1, Ying Zhao1
1School of Medicine, Nankai University, Tianjin, China (S.-S.L., M.G., Y.Z., S.H., Y.Y., Y.C., X.J.).
Hypertension (Dallas, Tex. : 1979)
|February 5, 2026
概括
在肺高血压 (PH) 中,循环RNA circMFN2 的下调. 在小鼠中恢复circMFN2逆转了PH相关的血管重塑和改善了血液动力学,显示了治疗潜力.
科学领域:
- 血管生物学 血管生物学
- 线粒体生物学 线粒体生物学
- 在RNA生物学,RNA生物学.
背景情况:
- 循环RNAs (circRNAs) 是血管重塑的新兴调节者,在肺高血压 (PH) 中扮演未知的角色.
- 这项研究研究了circMFN2在PH病变发生中的作用.
研究的目的:
- 为了识别和描述涉及PH的circRNAs.
- 阐明PH中circMFN2的分子机制.
- 评估circMFN2在PH中的治疗潜力.
主要方法:
- 鉴定了circMFN2,在PH患者和小鼠模型中下调.
- 利用人类肺动脉光滑肌细胞和PH的小鼠模型.
- 采用了转录基因分析,RNA-蛋白相互作用测试和线粒体功能分析.
- 调查了circMFN2-IGF2BP3-PDK4调节轴. 进行了研究.
主要成果:
- circMFN2过度表达减弱了缺氧诱导的光滑肌肉细胞增殖,迁移和线粒体功能障碍.
- circMFN2直接与IGF2BP3结合,抑制PDK4mRNA的稳定.
- 这个轴恢复了线粒体平衡,并减少了小鼠的PH标志.
- 治疗性鼻内输送R8-circMFN2改善了肺血液动力学和血管重塑.
结论:
- circMFN2作为低氧反应调节剂,通过IGF2BP3-PDK4轴保持线粒体平衡.
- R8-circMFN2的非侵入性鼻内输送显示了PH治疗的翻译潜力.
- 基于circMFN2的治疗可以逆转肺血管重塑和PH中的血液动力学损伤.
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