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• W2987202014 abstract "Diabetic corneal endothelial keratopathy is an intractable ocular complication characterized by corneal edema and endothelial decompensation, which seriously threaten vision. It has been suggested that diabetes is associated with pyroptosis, a type of programmed cell death via the activation of inflammation. Long noncoding RNA KCNQ1OT1 is commonly associated with various pathophysiological mechanisms of diabetic complications, including diabetic cardiomyopathy and diabetic retinopathy. However, whether KCNQ1OT1 is capable of regulating pyroptosis and participates in the pathogenesis of diabetic corneal endothelial keratopathy remains unknown. The aim of this study was to investigate the mechanisms of KCNQ1OT1 in diabetic corneal endothelial keratopathy. Here, we reveal that KCNQ1OT1 and pyroptosis can be triggered in diabetic human and rat corneal endothelium, along with the high glucose-treated corneal endothelial cells. However, miR-214 expression was substantially decreased in vivo and in experiments with cultured cells. LDH assay was also used to verify the existence of pyroptosis in high glucose-treated cells. Bioinformatics prediction and luciferase assays showed that KCNQ1OT1 may function as a competing endogenous RNA binding miR-214 to regulate the expression of caspase-1. To further analyze the KCNQ1OT1-mediated mechanism, miR-214 mimic and inhibitor were introduced into the high glucose-treated corneal endothelial cells. The results showed that upregulation of miR-214 attenuated pyroptosis; conversely, knockdown of miR-214 promoted it. In addition, KCNQ1OT1 knockdown by a small interfering RNA decreased pyroptosis factors expressions but enhanced miR-214 expression in corneal endothelial cells. To understand the signaling mechanisms underlying the prepyroptotic properties of KCNQ1OT1, si-KCNQ1OT1 was cotransfected with or without miR-214 inhibitor. The results showed that pyroptosis was repressed after silencing KCNQ1OT1 but was reversed by cotransfection with miR-214 inhibitor, suggesting that KCNQ1OT1 mediated pyroptosis induced by high glucose via targeting miR-214. Therefore, the KCNQ1OT1/miR-214/caspase-1 signaling pathway represents a new mechanism of diabetic corneal endothelial keratopathy progression, and KCNQ1OT1 could potentially be a novel therapeutic target." @default.
• W2987202014 created "2019-11-22" @default.
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• W2987202014 date "2020-02-01" @default.
• W2987202014 modified "2023-10-16" @default.
• W2987202014 title "Long noncoding RNA KCNQ1OT1 induces pyroptosis in diabetic corneal endothelial keratopathy" @default.
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• W2987202014 doi "https://doi.org/10.1152/ajpcell.00053.2019" @default.
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