MicroRNA-193a Promotes Apoptosis in Retinal Neuronal Cells in Early-Stage Diabetic (DM) Rat via Wilms' Tumor Gene 1.

This study aimed to investigate the role and mechanism of microRNA (miR)-193a in promoting apoptosis of retinal neuronal cells in early diabetic (DM) rats. Seventy-two male SD-grade rats were selected to establish a DM model by intraperitoneal injection of streptozotocin (STZ), and randomly divided into a control group (blank control group), a DM group (diabetic model group), a DM+miR-NC inhibitor group (miR-193a inhibition negative control group), a DM+miR-193a inhibitor group (miR-193a inhibitor group), DM+miR-NC mimic group (miR-193a overexpression negative control group), DM+miR-193a mimic group (miR-193a overexpression group), with12 rats in each group. The miR-193a expression, apoptosis rate, and Bax, Caspase3, and Caspase9 protein expression levels were elevated, and Bcl-2 protein expression was decreased in the retinal tissues of DM rats and high glucose-induced rat retinal neuronal cells, while miR-193a inhibitors reversed these processes. These dual luciferase reporter assay showed that WT1CDS, and WT1Mut were lower in the miR-193a group than in the miR-NC group ( miR-193a could inhibit early retinal neuronal cell apoptosis in DM rats by targeting and negatively regulating WT1 expression.

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