miR-16-5p Regulates Proliferation and Apoptosis in High Glucose-Treated Human Retinal Microvascular Endothelial Cells by Targeting VEGFA and TGFBR1.

IF 1.8 4区 医学 Q3 OPHTHALMOLOGY
Journal of Ophthalmology Pub Date : 2025-03-24 eCollection Date: 2025-01-01 DOI:10.1155/joph/3082206
JianFeng Zhao, YanFei Zhang, Yuan Xia, Jie Zhou, Yu Geng, HaiRong Hua
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引用次数: 0

Abstract

Diabetic retinopathy (DR) is a common complication of diabetes and the main cause of vision loss in the middle-aged and elderly people. miRNAs play vital roles in the development of DR. This study aimed to explore the effects of miR-16-5p on high glucose (HG)-stimulated human retinal microvascular endothelial cells (HRECs) by modulating vascular endothelial growth factor A (VEGFA) and transforming growth factor beta receptor 1 (TGFBR1). HRECs were treated with 5 mM, 10 mM, 20 mM, and 30 mM of HG to induce the DR cell model. Real-time quantitative polymerase chain reaction (RT-qPCR) was used to detect the expression of miR-16-5p and mRNAs of VEGFA and TGFBR1. Western blot was used to examine VEGFA and TGFBR1 protein levels. The 3-(4, 5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2-H-tetrazolium bromide assay was conducted to test cell proliferation. Flow cytometry with Annexin V-FITC/PI double staining was carried out to assess cell apoptosis ratio. Dual-luciferase assay was used to identify the target relationship between miR-16-5p and VEGFA and TGFBR1. Results found that the expression of miR-16-5p in HG-treated HRECs was reduced, and VEGFA and TGFBR1 expressions were upregulated. Knockdown of miR-16-5p increased VEGFA and TGFBR1 mRNA and protein levels, promoted cell proliferation, and inhibited apoptosis in HG-treated HRECs. VEGFA and TGFBR1 inhibition reversed the effect of knocking down miR-16-5p on HRECs. Dual-luciferase reporter assay revealed that VEGFA and TGFBR1 were the target of miR-16-5p. Overall, knockdown of miR-16-5p enhances proliferation and inhibits apoptosis of HRECs by upregulating VEGFA and TGFBR1 expression.

miR-16-5p通过靶向VEGFA和TGFBR1调控高糖处理的人视网膜微血管内皮细胞的增殖和凋亡
糖尿病视网膜病变(DR)是糖尿病的常见并发症,是导致中老年人视力丧失的主要原因。mirna在dr的发展中起着至关重要的作用。本研究旨在探讨miR-16-5p通过调节血管内皮生长因子A (VEGFA)和转化生长因子β受体1 (TGFBR1)对高糖(HG)刺激的人视网膜微血管内皮细胞(HRECs)的影响。分别用5 mM、10 mM、20 mM、30 mM的HG处理HRECs,诱导DR细胞模型。采用实时定量聚合酶链反应(RT-qPCR)检测miR-16-5p及VEGFA、TGFBR1 mrna的表达。Western blot检测VEGFA和TGFBR1蛋白水平。采用3-(4,5 -二甲基-2-噻唑基)- 2,5 -二苯基-2- h -溴化四唑试验检测细胞增殖情况。采用Annexin V-FITC/PI双染色流式细胞术检测细胞凋亡率。采用双荧光素酶法鉴定miR-16-5p与VEGFA和TGFBR1之间的靶标关系。结果发现,hg处理的HRECs中miR-16-5p表达降低,VEGFA和TGFBR1表达上调。在hg处理的HRECs中,敲低miR-16-5p增加VEGFA和TGFBR1 mRNA和蛋白水平,促进细胞增殖,抑制细胞凋亡。VEGFA和TGFBR1抑制逆转了敲低miR-16-5p对HRECs的作用。双荧光素酶报告基因实验显示,VEGFA和TGFBR1是miR-16-5p的靶标。总的来说,miR-16-5p的下调通过上调VEGFA和TGFBR1的表达来增强HRECs的增殖和抑制凋亡。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Ophthalmology
Journal of Ophthalmology MEDICINE, RESEARCH & EXPERIMENTAL-OPHTHALMOLOGY
CiteScore
4.30
自引率
5.30%
发文量
194
审稿时长
6-12 weeks
期刊介绍: Journal of Ophthalmology is a peer-reviewed, Open Access journal that publishes original research articles, review articles, and clinical studies related to the anatomy, physiology and diseases of the eye. Submissions should focus on new diagnostic and surgical techniques, instrument and therapy updates, as well as clinical trials and research findings.
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