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lncRNA ARAP1-AS2通过JAK2/STAT3信号通路对小鼠糖尿病肾病的影响

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摘要 目的探讨lncRNA锚蛋白重复和pH结构域/反义RNA(ARAP1-AS)2通过酪氨酸激酶(JAK)2/信号转导和转录激活因子(STAT)3信号通路对糖尿病肾病的影响及其机制。方法将MPC-5细胞分为对照组、高糖组、高糖+pcDNA3.1组、高糖+pcDNA3.1-ARAP1-AS2组、高糖+AG490组、高糖+pcDNA3.1-ARAP1-AS2+AG490组。四甲基偶氮唑蓝比色法(MTT)检测细胞存活率;流式细胞术检测MPC-5细胞凋亡率;Western印迹检测细胞增殖核抗原KI67、半胱氨酸天冬氨酸蛋白酶(Caspase)3、酪氨酸激酶(JAK)2、磷酸化(p)-JAK2、信号转导和转录激活因子(STAT)3、磷酸化STAT3(p-STAT3)蛋白表达;实时荧光定量PCR(RT-qPCR)检测ARAP1-AS2和突触孔蛋白(Synaptopodin)、结蛋白(Desmin)、波形蛋白(Vimentin)mRNA的表达水平。结果与对照组比较,高糖诱导的MPC-5细胞的存活率及KI67表达水平明显降低,细胞凋亡率及Caspase3表达水平明显升高,Synaptopodin mRNA表达水平明显降低,Desmin mRNA、Vimentin mRNA表达水平明显升高,p-JAK2、JAK2、p-STAT3、STAT3表达水平明显升高,ARAP1-AS2表达水平明显降低(P<0.05);过表达ARAP1-AS2后,高糖诱导的MPC-5细胞的存活率及KI67表达水平明显升高,细胞凋亡率及Caspase3表达水平明显降低,Synaptopodin mRNA表达水平明显升高,Desmin mRNA、Vimentin mRNA表达水平明显降低,p-JAK2、JAK2、p-STAT3、STAT3表达水平明显降低(P<0.05)。JAK2/STAT3信J号通路抑制剂AG490增强了ARAP1-AS2对高糖诱导的足细胞增殖、凋亡及Synaptopodin、Desmin、Vimentin表达的影响。结论过表达lncRNA ARAP1-AS2可能通过抑制JAK2/STAT3信号通路促进MPC-5细胞存活,抑制高糖诱导的足细胞损伤。
出处 《中国老年学杂志》 CAS 北大核心 2023年第11期2795-2799,共5页 Chinese Journal of Gerontology
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