Effects of microRNA ‑217 on high glucose‑induced inflammation and apoptosis of human retinal pigment epithelial cells (ARPE‑19) and its underlying mechanism.

Effects of microRNA‑217 on high glucose‑induced inflammation and apoptosis of human retinal pigment epithelial cells (ARPE‑19) and its underlying mechanism. Mol Med Rep. 2019 Oct 30;: Authors: Xiao H, Liu Z Abstract Diabetic retinopathy is a major complication of diabetes. Increasing evidence has indicated that microRNAs (miRs) serves an important role in diabetic retinopathy. However, the expression and mechanism of miR‑217 in high glucose‑induced human retinal pigment epithelial cells ARPE‑19 is still unclear. Therefore, the aim of this study was to investigate the role of miR‑217 in high glucose‑induced retinal epithelial cell damage, and further to explore the molecular mechanisms. In our study, we found that compared with control group, miR‑217 was upregulated in high glucose‑induced ARPE‑19 cells. In addition, TargetScan and a dual‑luciferase reporter gene assay showed that Sirtuin 1 (SIRT1) was a direct target of miR‑217. Then, we performed reverse transcription‑quantitative polymerase chain reaction assay and western blot assay to explore the expression of SIRT1 in high glucose‑induced ARPE‑19 cells. Our results demonstrated that SIRT1 was downregulated at the mRNA and protein levels in high glucose‑induced ARPE‑19 cells. Then, ARPE‑19 cells were transfected with inhibitor control, miR‑217 inhibitor or miR‑217 inhibitor + SIRT1‑small interfering RNA for 6 h, and then the cells were...
Source: Molecular Medicine Reports - Category: Molecular Biology Tags: Mol Med Rep Source Type: research