miR-183 inhibits autophagy and apoptosis in gastric cancer cells by targeting ultraviolet radiation resistance-associated gene.

International Journal of Molecular Medicine
Yuan YuanYongqian Shu

Abstract

Ultraviolet radiation resistance‑associated gene (UVRAG) regulates autophagy by promoting the formation and maturation of autophagosomes. The aim of the present study was to investigate the effects of UVRAG and UVRAG‑targeting miRNA on the regulation of autophagy and apoptosis in gastric cancer (GC). TargetScan was used to predict that miR‑183 targets the 3'‑untranslated region (UTR) of UVRAG, while the interaction between miR‑183 and the 3'‑UTR of UVRAG was assessed using a dual luciferase reporter assay. Autophagy was induced in the GC cell line MKN28 by serum starvation. miR‑NC mimics, miR‑183 mimics, miR‑NC inhibitors and miR‑183 inhibitors were transfected into MKN28 cells, followed by assessment of the UVRAG expression, cell viability and cell apoptosis by western blotting, reverse transcription‑quantitative polymerase chain reaction, Cell Counting Kit‑8 and flow cytometry, respectively. It was demonstrated that autophagy resulted in miR‑183 downregulation and overexpression of UVRAG mRNA and protein in MKN28 cells. Transfection with miR‑183 mimic or inhibitor affected the expression of miR‑183 and, consequently, UVRAG. miR‑183 overexpression reversed the starvation‑induced inhibition of cell proliferation, while inhibiti...Continue Reading

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Citations

Feb 3, 2021·Autophagy·Soudeh Ghafouri-FardMohammad Taheri
May 13, 2021·International Journal of General Medicine·Ting XiuFan-Bo Jing

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