Abstract
The study aimed to investigate the role of lncRNA FENDRR in proliferation and angiogenesis of human retinal endothelial cells (HRECs). HRECs were cultured in high-glucose medium to mimic diabetic retinopathy (DR) model. We overexpressed or knocked down FENDRR in HRECs to evaluate the effect of FENDRR expression on cell proliferation, migration, and capillary morphogenesis of HRECs under either normal glucose or high glucose condition. Results showed that VEGF and FENDRR expression were increased in blood from DR patients compared with the control subjects. Furthermore, high glucose treatment upregulated expression of VEGF and FENDRR secreted from HRECs, in a dose- and time-dependent manner. Importantly, FENDRR overexpression significantly promoted the high-glucose-induced proliferation, migration, capillary morphogenesis, and VEGF expression in HRECs. In contrast, FENDRR knockdown exerted the opposite effects. In conclusion, lncRNA FENDRR promotes the high-glucose-induced proliferation and angiogenesis of HRECs and may serve as a potential target for anti-angiogenic therapy for DR.
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