实用医学杂志 ›› 2024, Vol. 40 ›› Issue (16): 2263-2269.doi: 10.3969/j.issn.1006-5725.2024.16.011

• 基础研究 • 上一篇    下一篇

miR-365a-3p通过TGF-β信号通路影响血管内皮细胞功能参与子痫前期的发病机制

严兆华1,郑健彬2,张娜1,曹春燕1,颜露春1   

  1. 1.广东医科大学附属医院,妇产科,(广东 湛江 524001 )
    2.广东医科大学附属医院,检验科,(广东 湛江 524001 )
  • 收稿日期:2023-07-03 出版日期:2024-08-25 发布日期:2024-08-26
  • 基金资助:
    广东省医学科研基金项目(B2019007)

MiR⁃365a⁃3p affects vascular endothelial cell function through TGF⁃β signaling pathway and participates in the pathogenesis of preeclampsia

Zhaohua YAN1,Jianbin ZHENG2,Na ZHANG1,Chunyan CAO1,Luchun. YAN1   

  1. *.Department of Obstetrics and Gynecology,Affiliated Hospital of Guangdong Medical University,Zhanjiang 524001,China
  • Received:2023-07-03 Online:2024-08-25 Published:2024-08-26

摘要:

目的 探究微小RNA(miRNA)-365a-3p影响血管内皮细胞功能参与子痫前期(PE)的发病机制。 方法 分离原代人脐静脉内皮细胞(HUVECs),设为NC组(转染miR-365a-3p NC)、mimics组(转染miR-365a-3p mimics)、inhibitor组(转染miR-365a-3p inhibitor),另取对数期细胞设为空白组。检测各组增殖、迁移及血管形成能力。双荧光素酶实验验证miR-365a-3p与下游基因的靶向关系。检测各组TGF-β1、Smad4、Smad7蛋白表达。 结果 与空白组、NC组比较,mimics组24、48、72 h吸光度值及迁移率降低(P < 0.05),每个视野的管状结构数量减少(P < 0.05),inhibitor组24、48、72 h吸光度值及迁移率升高(P < 0.05),每个视野的管状结构数量增加(P < 0.05)。双荧光素酶实验表明Smad7是miR-365a-3p的一个靶基因。与空白组、NC组比较,mimics组转化生长因子-β1(TGF-β1)、Smad4蛋白表达升高(P < 0.05),Smad7蛋白表达降低(P < 0.05),inhibitor组TGF-β1、Smad4蛋白表达降低(P < 0.05),Smad7蛋白表达升高(P < 0.05)。 结论 miR-365a-3p可能通过调控下游TGF-β信号通路影响血管内皮细胞功能,从而参与PE发病。

关键词: 子痫前期, 微小RNA-365a-3p, 血管内皮细胞功能, 转化生长因子-β

Abstract:

Objective To explore the mechanism of microRNA (miRNA)-365a-3p affecting the function of vascular endothelial cells involved in the pathogenesis of preeclampsia (PE). Methods Primary human umbilical vein endothelial cells (HUVECs) were set as a NC group (transfected miR-365a-3p NC), a mimics group (transfected miR-365a-3p mimics) and a inhibitor group (transfected miR-365a-3p inhibitor). Logarithmic HUVECs cells were set as the blank group. The cell proliferation, migration and angiogenesis in each group were detected. Dual luciferin assay verified the targeting relationship between miR-365a-3p and downstream gene. The protein expressions of TGF-β1, Smad4 and Smad7 in each group were detected. Results Compared with the blank group and the NC group, the absorbance value and mobility of 24, 48 and 72 h were decreased (P < 0.05), the number of tubular structures per field were decreased in the mimics group (P < 0.05), the absorbance value and mobility of 24, 48 and 72 h were increased (P < 0.05), and the number of tubular structures per field were increased in the inhibitor group (P < 0.05). Dual luciferin assay showed that Smad7 was a target gene of miR-365a-3p. Compared with the blank group and the NC group, the protein expressions of TGF-β1 and Smad4 in the mimics group were increased (P < 0.05), while the protein expression of Smad7 was decreased (P < 0.05). The protein expression levels of TGF-β1 and Smad4 in the inhibitor group were decreased (P < 0.05), while the protein expression levels of Smad7 were increased (P < 0.05). Conclusion miR-365a-3p may affect the function of vascular endothelial cells by regulating the downstream TGF-β signaling pathway, and thus participate in the pathogenesis of PE.

Key words: preeclampsia, microRNA-365a-3p, vascular endothelial cell function, transforming growth factor beta

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