实用医学杂志 ›› 2020, Vol. 36 ›› Issue (24): 3312-3322.doi: 10.3969/j.issn.1006⁃5725.2020.24.002

• 基础研究 • 上一篇    下一篇

miR⁃5088⁃5p在子痫前期患者胎盘组织中的表达及其对滋养细胞自噬的影响

殷荷,王艳华,吴琪瑞,张辉,高丽娜,朱亚飞, 张慧萍, 吴凯,姜怡邓   

  1. 宁夏医科大学 1 临床医学院,2 基础医学院(银川 750004);3 宁夏医科大学总医院(银川 750004); 4 国家卫生健康委代谢性心血管疾病研究重点实验室(银川 750004);5 宁夏血管损伤与修复研究 重点实验室(银川 750004

  • 出版日期:2020-12-25 发布日期:2021-01-19
  • 通讯作者: 姜怡邓 E⁃mail:jydeng@nxmu.edu.cn
  • 基金资助:
    基金项目:国家自然科学基金项目(编号:81660258,81760270);宁夏回族自治区重点研发计划重大项目(编号:2019BFG02004),重点项目(编号:2018BEG02004),一般项目(编号:2018BEG03026);宁夏自然科学基金重点项目(编号:2020AAC02038),一般项目(编号:2020AAC03380)

Expression of miR⁃5088⁃5p in placenta of patients with preeclampsia and its effect on trophoblast autophagy

YIN He,WANG Yanhua,WU Qirui,ZHANG Hui,GAO Li′na,ZHU Yafei,ZHANG Huiping,WU Kai,JIANG Yideng.   

  1. Clinical Medical College of Ningxia Medical University,Yingchuan 750004,China
  • Online:2020-12-25 Published:2021-01-19
  • Contact: JIANG Yideng E⁃mail:jydeng@nxmu.edu.cn

摘要:

目的 探讨胎盘组织 miR⁃5088⁃5p 表达水平与子痫前期患者临床特征的相关性及其在子痫 前期发病机制中的作用。方法 qRT⁃PCR 检测胎盘组织 miR⁃5088⁃5p 的表达;将 miR⁃5088⁃5p 表达水平与 临床特征进行相关性分析;免疫荧光检测胎盘组织中 LC3B p62 的表达;同时,体外培养人源胎盘滋养细 胞株(HTR8⁃S/Vneo),分为常氧组和缺氧组,转染 miR⁃5088⁃5p mimics 后,Western blot 检测各组胎盘滋养 细胞 LC3B p62 蛋白的表达。结果 miR⁃5088⁃5p 在子痫前期胎盘组织中明显低表达(P < 0.01),且表达 水平与收缩压、舒张压、血小板计数呈负相关,而与新生儿体重呈正相关(P < 0.05);免疫荧光显示 LC3B 在子痫前期组胎盘组织中增加,而 p62 减少;另外,与常氧组比较,缺氧组细胞 LC3BⅡ/Ⅰ蛋白表达增加 P < 0.05),而 p62 蛋白表达降低(P < 0.05);转染 miR⁃5088⁃5p mimics 后,LC3BⅡ/Ⅰ表达降低(P<0.01), p62表达增加(P < 0.05)。结论 miR⁃5088⁃5p在子痫前期胎盘组织中显著下调,其过表达可显著抑制胎盘

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Abstract:

Objective To explore the relationship between the expression of miR⁃5088⁃5p in placenta and the clinical characteristics of patients with preeclampsia and its role in the pathogenesis of preeclampsia. Methods The expression of miR⁃5088⁃5p in placenta was measured by qRT⁃PCR and the correlation between the expression of miR⁃5088⁃5p and clinical features was analyzed,and the expression of LC3B and p62 in placental tissue was detected by immunofluorescence. At the same time,human placental trophoblast cell line(HTR8⁃S/Vneo)was cultured in vitro and divided into nomorxia group and hypoxia group. The expression of LC3B and p62 protein in placental trophoblasts of each group was detected by Western blot after transfection of miR⁃ 5088⁃5p mimics. Results The expression of miR⁃5088⁃5p in placenta of preeclampsia was significantly low(P < 0.01),and the expression level was negatively correlated with systolic blood pressure,diastolic blood pressure and platelet count but positively correlated with neonatal weight(P < 0.05). Immunofluorescence showed that LC3B increased and p62 decreased in placenta of preeclampsia group. In addition,compared with the nomorxia group,the expression of LC3BⅡ/Ⅰ protein in hypoxia group increased(P < 0.05),while the expression of p62 protein decreased(P < 0.05),and the expression of LC3BⅡ/Ⅰ decreased(P < 0.01)and p62 increased(P < 0.05)after transfection of miR⁃5088⁃5p mimics. Conclusion miR⁃5088⁃5p is significantly down⁃regulated in placental tissue of preeclamp⁃ sia,and its overexpression can significantly inhibit the occurrence of autophagy of placental trophoblasts,which is 

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