环Eif3c/miR-96-5p/PHF20L1/MEOX2轴在周围血管前脂肪细胞外体中介导纤维细胞功能障碍和血管重塑
Yixuan Liu1,2, Peiqing Tian2, Shuaiyong Zhang2
1Division of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China.
Non-coding RNA research
|March 11, 2026
概括
糖尿病诱导的血管重塑是由携带circEif3c.的周血管前脂肪细胞 (PVPACs) 的外体驱动的. 这种分子促进了偶然性纤维细胞 (AF) 的激活,加剧了血管疾病. 针对这种途径为糖尿病并发症提供了潜在的治疗方法.
科学领域:
- 心血管研究研究心血管研究
- 细胞生物学 细胞生物学
- 内分泌学 在内分泌学.
背景情况:
- 糖尿病是动脉样硬化心血管疾病和病态血管改造的重要危险因素.
- 慢性高血糖症通过外体介导细胞间通信诱导血管壁的变化.
- 在血管重塑过程中,周围血管前脂肪细胞 (PVPAC) 衍生的外体和偶然性纤维细胞 (AF) 之间的交叉关系在很大程度上尚未被探索.
研究的目的:
- 为了研究PVPAC衍生的外体在高血糖引起的血管改造中的作用.
- 在糖尿病的背景下,阐明 PVPAC 和 AF 之间沟通的分子机制.
- 为了确定糖尿病血管并发症的潜在治疗点.
主要方法:
- 建立了PVPACs和AFs的共同培养系统以及在高血糖条件下的小鼠模型.
- 使用超离心和外体标记物分离和特征化外体.
- 使用高通量RNA微阵列,qRT-PCR,现场杂交,生物信息学预测,CRISPR-Cas9编辑和各种生物功能分析来分析circEif3c/miR-96-5p/PHF20L1/MEOX2轴.
主要成果:
- 由PVPAC衍生的外体被丰富了circEif3c,它隔离了miR-96-5p,导致PHF20L1增加并抑制了MEOX2信号传递.
- 这一轴促进了AF的扩散和迁移,减少了亡,并恶化了血管重塑.
- 在糖尿病小鼠中,抑制外体circEif3c或MEOX2过度表达减弱了AF激活,改善了血管重塑.
结论:
- 来自PVPAC的外体环Eif3c/miR-96-5p/PHF20L1/MEOX2轴是高血糖引起的血管重塑的关键媒介.
- 准这种途径代表了一种有前途的治疗策略,用于管理与糖尿病相关的血管病理.
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