LncRNA VIM⁃AS1通过miR⁃497⁃5p/FBXW7轴调控高糖环境下视网膜内皮细胞的迁移和凋亡
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R774.1

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常熟市卫生健康委员会科技计划指导项目(CSWZD202110);常熟市第二人民医院面上项目(CSEY2021041)


LncRNA VIM⁃AS1 regulates cell migration and apoptosis of retinal endothelialcells under high glucose treatment via the miR⁃497⁃5p/FBXW7 axis
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    摘要:

    目的:探讨长链非编码RNA(lncRNA)VIM反义RNA 1(VIM-AS1)在糖尿病视网膜病变中的潜在分子机制。方法: 使用qRT-PCR测定 LncRNA VIM-AS1、miR-497-5p和FBXW7 mRNA的表达。使用蛋白质印迹检测FBXW7蛋白水平。分别使用CCK-8实验、伤口愈合实验和流式细胞技术分析评估细胞增殖、迁移和凋亡。通过双荧光素酶报告基因分析验证lncRNA VIM-AS1、miR-497-5p和FBXW7之间的结合关系。结果:在高糖处理的ARPE-19细胞中,LncRNAVIM-AS1和 FBXW7的表达显著降低,而miR-497-5p的表达上调。LncRNA VIM-AS1可以通过竞争性结合miR-497-5p上调FBXW7的表达。LncRNA VIM- AS1过表达能够促进HG处理的ARPE-19细胞的增殖和迁移,并抑制细胞凋亡,而miR-497-5p过表达消除了lncRNA VIM-AS1 过表达对HG处理的ARPE-19细胞的影响。此外,FBXW7敲低消除了miR-497-5p 对HG处理的ARPE-19细胞表型的抑制。结论:lncRNA VIM-AS1可通过调控miR-497-5p/FBXW7轴促进HG处理的ARPE-19细胞增殖和迁移,同时抑制细胞凋亡,提示 lncRNA VIM-AS1作为治疗靶点潜力巨大。

    Abstract:

    Objective:Our study aimed to probe the potential molecular mechanism of long non - coding RNA(lncRNA)VIM Antisense RNA 1(VIM-AS1)in diabetic retinopathy. Methods:LncRNA VIM-AS1,miR-497-5p and FBXW7 mRNA expressions were determined using qRT - PCR. The FBXW7 protein level was also detected using western blotting. The cell viability,migration and apoptosis were evaluated using CCK-8 assay,wound healing assay and flow cytometry analysis,respectively. Additionally,the binding relationships among lncRNA VIM-AS1,miR-497-5p and FBXW7 were verified by dual luciferase reporter assaies. Results:LncRNA VIM -AS1 and FBXW7 expressions were remarkably reduced in HG -treated ARPE - 19 cells,while miR - 497 - 5p was upregulated. LncRNA VIM - AS1 could upregulate the expression of FBXW7 by competitively binding to miR - 497 - 5p. LncRNA VIM - AS1 overexpression promoted cell proliferation and migration,and inhibited cell apoptosis in HG-induced ARPE-19 cells,while miR-497- 5p overexpression abolished the effects of lncRNA VIM -AS1 overexpression on HG -induced ARPE -19 cells. Furthermore,FBXW7 knockdown abrogated the effects of miR -497-5p inhibition on cell phenotypes of HG -treated ARPE -19 cells. Conclusion:LncRNA VIM-AS1 could promote the proliferation and migration,while inhibited cell apoptosis of HG-treated ARPE-19 cells by regulation of miR-497-5p/FBXW7 axis,suggesting that lncRNA VIM-AS1 might have great potential as therapeutic target for diabetic retinopathy

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居悦俊,郭展宏,王冠怡,沈婷,吴润泽,孔颖宏. LncRNA VIM⁃AS1通过miR⁃497⁃5p/FBXW7轴调控高糖环境下视网膜内皮细胞的迁移和凋亡[J].南京医科大学学报(自然科学版),2023,(2):187-195,248

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  • 在线发布日期: 2023-02-16
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