河北医科大学学报

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miR146干预PI3K/Akt信号通路对类风湿关节炎滑膜成纤维细胞的影响

  

  1. 湖北省恩施土家族苗族自治州中心医院肾病风湿内科,湖北 恩施 445000
  • 出版日期:2019-06-25 发布日期:2019-06-19
  • 作者简介:黄勤(1974-),女,湖北恩施人,湖北省恩施土家族苗族自治州中心医院副主任医师,医学硕士,从事肾病风湿性疾病诊治研究。

Effect of miR146 on rheumatoid arthritis synovial fibroblasts through PI3K/Akt signaling pathway

  1. Department of Nephropathy and Rheumatism, Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Hubei Province, Enshi 445000, China
  • Online:2019-06-25 Published:2019-06-19

摘要: [摘要]〓
〖HTH〗目的〖HTSS〗〖KG*2〗探讨微小RNA(microRNA,miR)146通过PI3K/Akt信号通路对类风湿关节炎(rheumatoid arthritis,RA)滑膜成纤维细胞(fibroblastlike synoviocytes,FLS)的影响。
〖HTH〗方法〖HTSS〗〖KG*2〗将RAFLS细胞分为对照组、脂多糖(lipopolysaccharide,LPS)组和LPS+miR146组。LPS+miR146组转染miR146后,LPS组和LPS+miR146组分别与LPS共孵育24 h,噻唑蓝法检测细胞增殖能力,流式细胞仪检测细胞凋亡情况,酶联免疫吸附测定法检测上清液白细胞介素1β(interleukin1β,IL1β)、白细胞介素6(interleukin6,IL6)和肿瘤坏死因子α(tumor necrosis factorα,TNFα)水平,实时定量聚合酶链反应法检测miR146、PI3K及Akt mRNA表达,蛋白免疫印迹法检测PI3K、Akt和磷酸化(p)Akt表达。
〖HTH〗结果〖HTSS〗〖KG*2〗与LPS组比较,LPS+miR146组miR146表达明显增加(P<005),RAFLS细胞增殖能力明显下降(P<005),且细胞凋亡明显增加(P<005),上清液IL1β、IL6和TNFα含量明显减少(P<005),PI3K mRNA和蛋白表达明显下调(P<005),Akt mRNA及蛋白表达无明显变化(P>005),而pAkt蛋白表达明显下降(P<005)。
〖HTH〗结论〖HTSS〗〖KG*2〗miR146可能通过干预PI3K/Akt信号通路调控RAFLS细胞增殖、凋亡及炎症因子产生。

关键词: 关节炎, 类风湿, 微小RNA146, 磷酸肌醇3激酶类

Abstract: [Abstract] Objective〖HTSS〗〓To investigate the effect of microRNA(miR146) on rheumatoid arthritis(RA) fibroblastlike synoviocytes(FLS) through  PI3K/Akt signaling pathway.
〖HTH〗〖WTHZ〗Methods〖HTSS〗〓RAFLS cells were divided into the control group, lipopolysaccharide(LPS) group and LPS+miR146 group. After transfection of miR146 in the LPS+miR146 group, the LPS group and the LPS+miR146 group were incubated with LPS for 24 h, respectively. The cell proliferation was determined by methylthiazolyldiphenyltetrazolium. The Flow cytometry was used to detect cell apoptosis. The levels of interleukin1β(IL1β), interleukin6(IL6) and tumor necrosis factorα(TNFα) in supernatants were determined by enzymelinked immunosorbent assay. The realtime quantitative polymerase chain reaction was used to detect the expression of miR146, PI3K and Akt mRNA. Western blotting was used to detect the expression of PI3K, Akt and phosphorylated(p)Akt.
〖HTH〗〖WTHZ〗Results〖HTSS〗〓Compared with LPS group, the expression of miR146 in LPS+miR146 group was significantly increased(P<005), the proliferation of RAFLS cells was significantly decreased(P<005), and the apoptosis was significantly increased(P<005). Compared with LPS group, the contents of IL1β, IL6 and TNFα in the supernatant in LPS+miR146 group were significantly decreased(P<005), the expression of PI3K mRNA and protein in LPS+miR146 group was downregulated(P<005), and the expression of Akt mRNA and protein in LPS+miR146 group was not significantly changed(P>005), and the expression of pAkt protein in LPS+miR146 group was significantly decreased(P<005).
〖HTH〗〖WTHZ〗Conclusion〖HTSS〗〓miR146 may regulate the proliferation, apoptosis and inflammatory factors of RAFLS cells by interfering with PI3K/Akt signaling pathway.

Key words: arthritis, rheumatoid, microRNA146, phosphoinositide 3kinase