吉林大学学报(医学版) ›› 2021, Vol. 47 ›› Issue (1): 187-195.doi: 10.13481/j.1671-587x.20210126

• 临床研究 • 上一篇    下一篇

妊娠期糖尿病患者胎盘组织中miRNA-508-3p和HGF表达水平及其对滋养细胞胰岛素抵抗的影响

黄好1,贾虹1(),王晓霜1,张鹭2,段亚亭1   

  1. 1.重庆市中医院妇产科,重庆 400011
    2.重庆市中医院超声科,重庆 400011
  • 收稿日期:2020-04-27 出版日期:2021-01-28 发布日期:2021-01-27
  • 通讯作者: 贾虹 E-mail:41457681@qq.com
  • 作者简介:黄 好(1984-),女,重庆市人,主治医师,主要从事生殖医学和盆底康复方面的研究。
  • 基金资助:
    国家中医药管理局全国名老中医药专家传承工作室建设项目(20140814)

Expressions of miRNA-508-3p and HGF in placenta tissue of patients with gestational diabetes mellitus and their effects on trophoblast insulin resistance

Hao HUANG1,Hong JIA1(),Xiaoshuang WANG1,Lu ZHANG2,Yating DUAN1   

  1. 1.Department of Gynecology and Obstetrics,Chongqing Hospital of Traditional Chinese Medicine,Chongqing 400011,China
    2.Department of Ultrasound,Chongqing Hospital of Traditional Chinese Medicine,Chongqing 400011,China
  • Received:2020-04-27 Online:2021-01-28 Published:2021-01-27
  • Contact: Hong JIA E-mail:41457681@qq.com

摘要: 目的

探讨妊娠期糖尿病(GDM)患者胎盘组织中微小RNA-508-3p(miR-508-3p)与肝细胞生长因子(HGF)的表达及两者的相互作用,初步阐明miR-508-3p介导滋养细胞胰岛素抵抗(IR)的相关分子机制。

方法

选取GDM患者及正常妊娠孕产妇各15例,分别为GDM组和正常对照组。采用实时定量PCR(RT-PCR)法、免疫组织化学染色法和免疫印迹法检测2组孕产妇胎盘组织中miR-508-3p表达水平和HGF蛋白表达水平,分析两者的相关性。应用生物信息学技术筛选HGF作为miR-508-3p的目标靶基因,并通过双荧光素酶报告基因实验及免疫印迹法进行验证。体外培养人滋养细胞HTR-8/Svneo,建立HTR-8/Svneo IR细胞模型(HTR-8/Svneo-IR),采用脂质体瞬时转染法对HTR-8/Svneo-IR细胞转染miR-508-3p-inhibitor(miR-508-3p-inhibitor-IR组)和miR-NC(miR-NC-IR组),RT-PCR法检测其转染效率,免疫印迹法检测各组细胞中HGF及磷脂酰肌醇3 激酶/蛋白激酶B(PI3K/AKT)信号通路中磷酸化PI3K(p-PI3K)和磷酸化AKT(p-AKT)蛋白表达水平。

结果

与正常对照组比较, GDM组患者胎盘组织中miR-508-3p表达水平明显升高(P<0.05),HGF蛋白表达水平明显降低(P<0.01),且GDM组患者胎盘组织中HGF蛋白表达水平与miR-508-3p表达水平呈负相关关系(r=-0.542,P<0.05)。与HTR-8/Svneo组比较,HTR-8/Svneo-IR组细胞中miR-508-3p表达水平明显升高(P<0.05);与HTR-8/Svneo-IR组比较,miR-508-3p-inhibitor-IR组细胞中miR-508-3p表达水平明显降低(P<0.05)。与HTR-8/Svneo组比较,HTR-8/Svneo-IR组细胞中HGF、p-PI3K和p-AKT蛋白表达水平均明显降低(P<0.05);与HTR-8/Svneo-IR组比较,miR-508-3p-inhibitor-IR组细胞中HGF、p-PI3K和p-AKT蛋白表达水平明显升高(P<0.05)。

结论

在GDM患者胎盘组织中miR-508-3p可靶向抑制HGF的表达,并通过PI3K/AKT信号通路促进滋养细胞的IR,继而参与GDM的发生发展。

关键词: 妊娠期糖尿病, 微小RNA-508-3p, 肝细胞生长因子, 胰岛素抵抗, 滋养细胞

Abstract: Objective

To investigate the expressions of microRNA-508-3p (miR-508-3p) and hepatocyte growth factor (HGF) in placenta tissue of the patients with gestational diabetes mellitus (GDM) and their relationship, and to clarify the related molecular mechanism of miR-508-3p in mediating trophoblast insulin resistance(IR).

Methods

A total of 15 GDM patients and 15 normal pregnant women were selected and used as GDM group and normal control group. The expression levels of miR-508-3p and HGF protein in placenta tissue of the patients in two groups were detected by RT-PCR, immunohistochemistry and Western blotting methods, and their relationship was analyzed.HGF was screened as the target gene of miR-508-3p with bioinformatics,which was verified by double luciferase reporter gene assay and Western blotting method. The human trophoblast cells HTR-8/Svneo were cultured in vitro to establish the HTR-8/Svneo IR cell model (HTR-8/Svneo-IR). The HTR-8/Svneo-IR cells were transfected with miR-508-3p-inhibitor (miR-508-3p-inhibitor-IR grouop) and miR-NC(miR-NC-IR group) by liposome transient transfection method. The transfection efficiency was detected by RT-PCR; Western blotting method was used to detect the expression levels of HGF and phosphorylated phosphatidylinosital 3 kinase(p-PI3K) and phosphorylated protein kinse B(p-AKT) proteins in PI3K/AKT signaling pathway in the cells in various groups.

Results

Compared with normal control group, the expression levels of miR-508-3p in placenta tissue of the patients in GDM group was significantly increased (P<0.05), while the HGF protein expression level was significantly decreased (P<0.01), and there was a negative correlation between the expression level of HGF protein and the expression level of miR-508-3p in placenta tissue of the patients in GDM group(r =-0.542, P<0.05). Compared with HTR-8/Svneo group, the expression level of miR-508-3p in the cells in HTR-8/Svneo-IR group was significantly increased (P<0.05);compared with HTR-8/Svneo-IR group,the expression level of miR-508-3p in the cells in miR-508-3p-inhibitor-IR group was significantly decreased (P<0.05).Compared with HTR-8/Svneo group, the expression levels of HGF,p-PI3K and p-AKT proteins in the cells in HTR-8/Svneo-IR group were significantly decreased (P<0.05);compared with HTR-8/Svneo-IR group, the expression levels of HGF,p-PI3K and p-AKT proteins in the cells in miR-508-3p-inhibitor-IR group were significantly increased (P<0.05).

Conclusion

MiR-508-3p can inhibit the expression of HGF in placenta tissue of the GDM patients, and promote IR of trophoblasts through PI3K/AKT signaling pathway, and then participate in the occurrence and development of GDM.

Key words: gestational diabetes mellitus, microRNA-508-3p, hepatocyte growth factor, insulin resistance, trophoblasts

中图分类号: 

  • R714. 256