lncRNA H19通过准miR-125a-3p/FLT1轴来促进血管新密的形成
Rengui Jiang1, Xuyu He2, Weidong Chen3
1Department of Cardiology, Ganzhou Hospital of Guangdong Provincial People's Hospital, Ganzhou Municipal Hospital (Gannan Medical University Affiliated Municipal Hospital), Ganzhou 341000, China.
Acta biochimica et biophysica Sinica
|September 6, 2024
概括
长非编码RNA H19促进血管光滑肌肉细胞的增殖和迁移,有助于复原. 它充当竞争性RNA,准miR-125a-3p,并可能为血管复缩提供治疗点.
科学领域:
- 心血管生物学 心血管生物学
- 分子生物学分子生物学
- 在RNA治疗方面,RNA疗法.
背景情况:
- 异常的血管光滑肌细胞 (VSMC) 增殖和迁移是血管缩中新内形成的关键驱动因素.
- 了解VSMC行为的调节机制对于开发有效的复原治疗至关重要.
研究的目的:
- 调查长非编码RNA H19 (lncRNA H19) 在新亲密形成中的作用.
- 阐明 lncRNA H19 影响 VSMC 行为和血管缩的分子机制.
主要方法:
- 在体内研究中建立小鼠 carotid 绑定模型.
- 使用人类VSMC作为体外细胞模型.
- 采用分子生物学技术来评估基因和microRNA表达,细胞增殖,迁移和点相互作用.
主要成果:
- 过度表达的lncRNA H19显著促进了VSMC的增殖和迁移.
- 发现 lncRNA H19 可能与 miR-125a-3p 结合,Fms 类型的氨酸激酶-1 (FLT1) 被确定为 miR-125a-3p 的潜在标.
- 对miR-125a-3p的升级抵消了lncRNA H19对VSMCs的增殖和迁移作用.
- 救援实验表明,miR-125a-3p减弱了IncRNA H19诱导的FLT1表达.
- 在小鼠模型中,lncRNA H19的过度表达加剧了neointima形成.
结论:
- lncRNA H19通过菌miR-125a-3p作为竞争的内源RNA (ceRNA) 起作用,从而刺激VSMC的增殖和迁移.
- 这种机制突显了lncRNA H19对血管缩中新密度形成的显著贡献.
- lncRNA H19成为治疗血管缩的潜在治疗标.
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