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缺少MiR-199a-5p通过调节ASMCs功能来促进外周动脉疾病中的动脉缩,通过向HIF-1α和E2F3来调节ASMCs功能

Duan Liu^1,2, Yexiang Jing^1,3, Guiyan Peng^1,3

¹Division of Vascular Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China.

Current vascular pharmacology

|June 24, 2024

概括

微RNA-199a-5p在静脉缩 (RS) 中降低调节,并抑制动脉光滑肌细胞的增殖和迁移. 恢复miR-199a-5p水平显示了通过向HIF-1α和E2F3.3来治疗RS的潜力.

科学领域:

血管生物学血管生物学
分子医学是分子医学.
基因规则基因规则

背景情况:

静脉复杂症 (RS) 是外周动脉疾病 (PAD) 血管造形术后的一种严重并发症,通常导致缺血和截肢.
微RNA微阵列分析显示,RS患者的动脉光滑肌细胞 (ASMC) 中miR-199a-5p的显著下调.

研究的目的:

调查miR-199a-5p在静脉缩中的功能作用.
阐明miR-199a-5p影响RS发育的潜在分子机制.

主要方法:

从健康人群和PAD/RS患者中分离出ASMC.
定量实时PCR (qRT-PCR) 和现场杂交评估了miR-199a-5p表达.
细胞测定 (流细胞计,TUNEL,EDU,CCK8,Transwell,伤口关闭) 评估了ASMC的增殖和迁移.
在体内机理学研究中使用了一种老鼠动脉气球损伤模型.

主要成果:

在RS患者和ASMC中,MiR-199a-5p的下调;它的上调抑制了ASMC的增殖和迁移.
HIF-1α和E2F3被确定为miR-199a-5p的直接目标,并在RS中得到了上调.
在体内通过lentivirus传递miR-199a-5p通过向HIF-1α和E2F3.3.通过向HIF-1α和E2F3.3.减轻新极度增生症.

结论:

MiR-199a-5p作为ASMC扩散和迁移的抑制剂.
通过调节HIF-1α和E2F3.3.,米R-199a-5p作为恢复症的治疗标具有前途.

关键词:

动脉光滑肌细胞动脉光滑肌细胞这是E2F3.3.这就是HIF-1α.周围动脉疾病周围动脉疾病复原症 (Restenosis) 是一种复原症.在 miR-199a-5p 中.

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