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中国临床药理学与治疗学 ›› 2020, Vol. 25 ›› Issue (3): 285-292.doi: 10.12092/j.issn.1009-2501.2020.03.007

• 基础研究 • 上一篇    下一篇

白藜芦醇通过上调miR-26a改善高糖诱导的人视网膜色素上皮细胞损伤

周海艳,王开玲   

  1. 恩施土家族苗族自治州中心医院眼科中心,恩施 445000,湖北
  • 收稿日期:2019-10-17 修回日期:2020-02-21 出版日期:2020-03-26 发布日期:2020-04-13
  • 通讯作者: 王开玲,女,本科,主治医师,主要研究眼部疾病。 E-mail: 365147125@qq.com
  • 作者简介:周海艳,女,本科,主治医师,主要研究眼部疾病。 Tel: 13597819196 E-mail: 786766879@qq.com
  • 基金资助:
    湖北省卫生计生西医类项目(WJ2015MA027)

Resveratrol protects human retinal pigment epithelial cells from toxicity of high glucose by up-regulation of miR-26a

ZHOU Haiyan, WANG Kailing   

  1. Eye Center of the Central Hospital of Enshi Autonomous Prefecture, Enshi 445000, Hubei, China
  • Received:2019-10-17 Revised:2020-02-21 Online:2020-03-26 Published:2020-04-13

摘要: 目的:研究白藜芦醇(RES)对高糖诱导的人视网膜色素上皮细胞ARPE-19损伤的保护机制。方法:高葡萄糖(HG)刺激ARPE-19细胞诱导建立损伤模型。分别采用细胞计数试剂盒-8(CCK-8)实验检测细胞活力、流式细胞术检测细胞凋亡率、DCFH-DA染色流式细胞仪检测活性氧(ROS)生成和定量即时聚合酶链锁反应(RT-qPCR)技术检测miR-26a表达水平。Western blot方法分析相关蛋白表达水平。结果:HG刺激明显降低ARPE-19细胞活力,凋亡率升高及氧化应激损伤加重。RES改善HG诱导的ARPE-19细胞损伤;上调HG诱导的ARPE-19细胞中miR-26a表达,miR-26a沉默部分逆转了RES对HG诱导的ARPE-19细胞损伤的保护效应。另外,RES还可通过上调miR-26a表达降低细胞外调节蛋白激酶(ERK)和Wnt/β-catenin信号通路活化。结论:RES通过上调miR-26a表达,伴随抑制ERK和Wnt/β-catenin信号传导,改善HG诱导的ARPE-19细胞损伤。RES可能成为治疗糖尿病视网膜病变的药物。

关键词: 白藜芦醇, 高糖, 人视网膜色素上皮细胞, miR-26a

Abstract: AIM: To study the protective effects and mechanism of resveratrol (RES) on the injury of human retinal pigment epithelial cells (ARPE-19) induced by high glucose (HG). METHODS: ARPE-19 cells were cultured in HG to simulate injury. Cell viability, apoptosis, ROS generation and miR-26a level were examined by CCK-8 assay, flow cytometry assay, DCFH-DA staining and RT-qPCR, respectively. Expression of proteins associated with viability, apoptosis and oxidative stress was measured by Western blot analysis. In addition, the involvements of the ERK and Wnt/β-catenin pathways were analyzed by Western blot analysis.RESULTS:HG reduced cell viability while promoted apoptosis and oxidative stress in ARPE-19 cells. RES ameliorated HG-induced cell injury. The expression of miR-26a was up-regulated by RES in HG-treated cells, and miR-26a inhibition obviously reversed the effects of RES on HG-treated cells. Finally, we found the ERK and Wnt/β-catenin pathways were inhibited by RES through up-regulation of miR-26a. CONCLUSION: RES protected ARPE-19 cells against HG-induced injury through up-regulating miR-26a, along with inhibition of the ERK and Wnt/β-catenin pathways. RES might be a potential therapeutic drug for diabetic retinopathy.

Key words: resveratrol, high glucose, human retinal pigment epithelial cells, miR-26a

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