MicroRNA146a与CXCR4ぴ谔悄虿⌒募〔⌒募〕上宋细胞中的表达变化
2021-09-16王璨陶辉蒋书美王立超石开虎
王璨 陶辉 蒋书美 王立超 石开虎
摘 要:目的:探究微小RNA146a(miR146a)與趋化因子受体4(CXCR4)在糖尿病心肌病心肌成纤维细胞(CFs)中的表达变化。方法:提取原代心肌成纤维细胞(Cardiac fibroblasts,CFs),高糖(33.3mmol·L1)作用CFs。用qRTPCR检测CFs中miR146a的表达,Western blotting检测CFs中α平滑肌肌动蛋白(αSMA)、Ⅰ型胶原前胶原A1(Col1A1)、CXCR4蛋白的表达情况。MTT检测高糖对CFs增殖活性的影响。结果:与正常对照组相比,高糖诱导后的CFs中miR146a表达量降低,而高糖诱导后的CFs中αSMA、Col1A1、CXCR4表达增加。并且高糖处理后CFs增殖活性提高。结论:糖尿病心肌病形成过程中CFs中miR146a表达下调,而CXCR4表达上调,提示miR146a与CXCR4糖尿病心肌病的病程中可能存在潜在的调节关系,有助于探索糖尿病心肌病的病理机制。
关键词:miR146a;CXCR4;糖尿病心肌病;心肌纤维化
中图分类号:R 542.23
To investigate the expression changes ofMicroRNA146a and CXCR4
in myocardial tissue and fibroblasts of diabetic cardiomyopathy
Wang Can1,2 Tao Hui1,2 Jiang Shumei1,2 Wang Lichao1,2 Shi Kaihu1,2*
1.Dept of Cardiothoracic Surgery,The Second Affiliated Hospital of Anhui Medical University AnhuiHefei 230601;
2.Cardiovascular Research Center,Anhui Medical University AnhuiHefei 230601
Abstract:Objective:To investigate the expression changes of microRNA146a (miR146a) and chemokine receptor 4 (CXCR4) in diabetic cardiomyopathy myocardial fibroblasts (CFS).Methods:CFS were extracted and high glucose (33.3mmol·L1) was used to induce CFs.Use qRTPCR in the detection of CFs miR146a express,Western blotting detection in CFs the expression of αSMA,Col1A1,and CXCR4.MTT was used to detect the effect of high glucose on the proliferation of CFS.Results:Compared with the normal control group,the expression of miR146a decreased in CFs induced by high glucose,while the expression of αSMA,Col1A1 and CXCR4 increased in CFs induced by high glucose.The proliferation activity of CFs was increased after high glucose treatment.Conclusion:During the formation of diabetic cardiomyopathy,miR146a expression is downregulated in CFs,while CXCR4 expression is upregulated,suggesting that there may be a potential regulatory relationship between miR146a and CXCR4 in the course of diabetic cardiomyopathy,which is helpful to explore the pathological mechanism of diabetic cardiomyopathy.