例如:"lncRNA", "apoptosis", "WRKY"

MiR-205-3p protects human corneal epithelial cells from ultraviolet damage by inhibiting autophagy via targeting TLR4/NF-κB signaling.

Eur Rev Med Pharmacol Sci. 2020 Jun;24(12):6494-6504. doi:10.26355/eurrev_202006_21632
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摘要


OBJECTIVE:MiRNA has been found to have therapeutic effect on corneal damage. This paper aimed to study the effect of miR-205-3p on corneal damage induced by ultraviolet (UV) radiation. MATERIALS AND METHODS:HCE cells were exposed to UV light and transfected. Quantitative Real (qRT-PCR) and Western blot were used to determine miRNA/mRNA and protein expression. CCK-8 assay, Edu incorporation experiment, and flow cytometry were used to separately measure cell activity, proliferation and apoptosis. LC3 puncta were researched by immunofluorescence experiment. TNF-α, IL-6 and IL-1β levels in cells were detected by enzyme-linked immunosorbent assay (ELISA) kit. MDA, SOD, and GSH-PX levels were measured using detection kits. Reactive oxygen species level was reflected by detecting DCFH-DA density. Luciferase activity assay was performed to verify the regulating relationship between miR-205-3p and TLR4. RESULTS:UV radiation decreased HCE cell viability, proliferation, and increased HCE cell apoptosis and autophagy (all p < 0.01). When exposed UV radiation, the overexpression of miR-205-3p group elevated HCE cells viability, proliferation and weakened HCE cells apoptosis and autophagy (all p < 0.01). MiR-205-3p inhibited inflammation and oxidative stress in HCE cells induced by UV radiation (p < 0.01). MiR-205-3p directly inhibited TLR4 expression. The upregulation of TLR4 significantly reversed the effects of miR-205-3p on HCE cells phenotypes induced by UV radiation (p < 0.01). CONCLUSIONS:MiR-205-3p protected HCE cells from UV damage by inhibiting autophagy via targeting TLR4.

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