雌醇降低了微RNA-193a的调节,以调节其血管性作用
Lisa Rigassi1, Mirel Adrian Popa2, Ruth Stiller1
1Department of Reproductive Endocrinology, University Hospital Zurich, 8952 Schlieren, Switzerland.
Cells
|August 13, 2025
概括
雌激醇 (E2) 通过降低 miR-193a-3p 的调节来保护血管,这是一种抑制血管生成的微RNA. 这种机制涉及雌激素受体α,并影响内皮细胞修复和毛细血管形成.
科学领域:
- 内分泌学 在内分泌学.
- 分子生物学分子生物学
- 心血管研究研究心血管研究
背景情况:
- 雌激素,特别是雌激醇 (E2),对心血管健康至关重要,通过内皮细胞 (EC) 增殖,迁移和血管生成促进内皮细胞的修复.
- 微RNAs (miRNAs) 越来越多地被认为是它们在血管功能和调解雌激素作用中的角色.
研究的目的:
- 通过调节特定的miRNAs,研究E2通过调节特定的miRNAs来发挥血管保护作用的假设.
- 阐明miR-193a-3p在E2介导的内皮细胞功能和血管生成中的作用.
主要方法:
- 在EC中选受E2影响的miRNAs.
- 使用miR-193a-3p模仿剂和抗miRs进行体外研究,以评估对EC增殖,迁移和毛细血管形成的影响.
- 研究参与E2和miR-193a-3p活动的信号通路 (PI3K/Akt-VEGF,ALK1/SMAD).
- 通过RT-PCR来确定调解E2作用的雌激素受体 (ER) 亚型.
- 在卵巢切除小鼠的体内Matrigel测定.
- 在体外受精 (IVF) 试验对象的血miR-193a-3p水平的分析.
主要成果:
- 在EC中,E2显著降低了miR-193a-3p水平.
- 抗米尔对miR-193a-3p的降低调节模仿了E2对ECs的益血管性作用.
- 恢复miR-193a-3p水平取消了E2诱导的EC生长和毛细血管形成.
- miR-193a-3p通过抑制PI3K/Akt-VEGF和ALK1/SMAD信号通路来抑制血管生成.
- E2通过ERα向下调节miR-193a-3p,在转录后起作用.
- 在体内研究证实了miR-193a-3p的抗血管性作用和E2克服它的能力.
- 在试管婴儿中,较低的血miR-193a-3p水平与较高的E2水平相关.
结论:
- miR-193a-3p在内皮细胞中充当血管生成的内源性抑制剂.
- 通过ERα.通过降低miR-193a-3p表达的调节,E2促进血管修复和血管生成.
- 治疗调节miR-193a-3p (模仿或抗米尔) 有潜力治疗与毛细血管功能障碍相关的疾病.
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