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MiR-17-5p downregulation alleviates apoptosis and fibrosis in high glucose-induced human mesangial cells through inactivation of Wnt/β-catenin signaling by targeting KIF23
Environmental Toxicology ( IF 4.4 ) Pub Date : 2021-05-20 , DOI: 10.1002/tox.23280
Xiaoli Chen 1 , Liyan Gu 1 , Xia Cheng 1 , Jianping Xing 1 , Minxia Zhang 1
Affiliation  

Diabetic nephropathy (DN) remains the major cause of end-stage renal disease. MicroRNAs (miRNAs) have been reported to perform biological functions in many diseases. This investigation elucidated the biological role of miR-17-5p in DN. In this study, high glucose-cultured human mesangial cells (HMCs) were used as a cell model of DN. The miR-17-5p and KIF23 expression was measured by RT-qPCR. Cell apoptosis was detected by flow cytometry. The protein levels of apoptosis markers, fibrosis markers, and Wnt/β-catenin signaling-related genes were assessed using western blotting. The interaction of miR-17-5p with KIF23 was tested by a luciferase reporter assay. We found that miR-17-5p was upregulated in both DN patients and high glucose-treated HMCs. Silencing miR-17-5p attenuated the apoptosis and fibrosis in high glucose-treated HMCs. MiR-17-5p binds to KIF23 3′UTR and negatively regulates KIF23 expression. KIF23 knockdown could suppress the role of miR-17-5p inhibition in high glucose-treated HMCs. Additionally, inhibition of miR-17-5p activated Wnt/β-catenin signaling in HMCs through upregulating KIF23 expression. Suppression of Wnt/β-catenin signaling antagonized the effect of miR-17-5p in HMCs. In conclusion, miR-17-5p inhibition alleviates the apoptosis and fibrosis in high glucose-treated HMCs by targeting KIF23 activating Wnt/β-catenin signaling.

中文翻译:

MiR-17-5p 下调通过靶向 KIF23 使 Wnt/β-catenin 信号失活减轻高糖诱导的人系膜细胞凋亡和纤维化

糖尿病肾病(DN)仍然是终末期肾病的主要原因。据报道,MicroRNA (miRNA) 在许多疾病中发挥生物学功能。该研究阐明了 miR-17-5p 在 DN 中的生物学作用。本研究采用高糖培养的人系膜细胞(HMCs)作为DN的细胞模型。通过 RT-qPCR 测量 miR-17-5p 和 KIF23 的表达。流式细胞仪检测细胞凋亡。使用蛋白质印迹评估细胞凋亡标志物、纤维化标志物和 Wnt/β-连环蛋白信号相关基因的蛋白质水平。miR-17-5p 与 KIF23 的相互作用通过荧光素酶报告基因测定进行测试。我们发现 miR-17-5p 在 DN 患者和高糖处理的 HMC 中均上调。沉默 miR-17-5p 减弱了高糖处理的 HMC 中的细胞凋亡和纤维化。MiR-17-5p 与 KIF23 3'UTR 结合并负调节 KIF23 表达。KIF23 敲低可以抑制 miR-17-5p 抑制在高葡萄糖处理的 HMC 中的作用。此外,抑制 miR-17-5p 通过上调 KIF23 表达激活 HMC 中的 Wnt/β-catenin 信号传导。Wnt/β-连环蛋白信号的抑制拮抗 miR-17-5p 在 HMC 中的作用。总之,miR-17-5p 抑制通过靶向激活 Wnt/β-catenin 信号传导的 KIF23 来减轻高糖处理的 HMC 中的细胞凋亡和纤维化。Wnt/β-连环蛋白信号的抑制拮抗 miR-17-5p 在 HMC 中的作用。总之,miR-17-5p 抑制通过靶向激活 Wnt/β-catenin 信号传导的 KIF23 来减轻高糖处理的 HMC 中的细胞凋亡和纤维化。Wnt/β-连环蛋白信号的抑制拮抗 miR-17-5p 在 HMC 中的作用。总之,miR-17-5p 抑制通过靶向激活 Wnt/β-catenin 信号传导的 KIF23 来减轻高糖处理的 HMC 中的细胞凋亡和纤维化。
更新日期:2021-07-02
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