miR-4795-3p通过靶向EGFR抑制胃癌细胞的增殖和侵袭

目的:探讨微小RNA（miRNA）-4795-3p通过靶基因表皮生长因子受体（epidermal growth factor receptor，EGFR）抑制胃癌细胞增殖和侵袭。方法:本研究于2020年6月至12月分别转染阴性对照模拟物（阴性对照组）和miR-4795-3p模拟物（miR-4795-3p组）至胃癌BGC...

miR-4795-3p inhibits proliferation and invasion of gastric cancer cells by targeting EGFR

Objective:To investigate the effect of microRNA (miR)-4795-3p on the proliferation and invasion of gastric cancer cells by regulating the expression of epidermal growth factor receptor (EGFR).Methods:The negative control mimic (a negative control group) and miR-4795-3p mimic (a miR-4795-3p group) were respectively transfected into the gastric cancer BGC823 cells from June to December 2020. Real-time polymerase chain reaction (qRT-PCR) was used to test the transfection efficiency. The MTS method and Transwell experiment were used to detect the proliferation and invasion ability of the BGC823 cells. The bioinformatics software miRcode predicted the target gene of miR-4795-3p, and the dual luciferase reporter gene experiment was used to verify the binding of miR-4795-3p to the target gene. qRT-PCR and Western blot were used to detect the target gene expression. The software SPSS 21.0 was used to analyzed the data. The independent-sample t test was used for the comparison between the groups. If P<0.05, there is a statistical difference. Results:The expressions of miR-4795-3p in the BGC823 cells of the miR-4795-3p group and the negative control group were (1.02±0.11) and (11.04 ± 1.23), respectively. The expression of miR-4795-3p in the negative control group was significantly lower than that in the miR-4795-3p group ( t=8.14, P<0.01). Compared with those in the negative control group, the absorbance of the BGC823 cells in the miR-4795-3p group was significantly decreased ( P<0.05), and the number of cell invasion was significantly reduced ( P<0.01). miR-4795-3p and EGFR had complementary binding sites, and miR-4795-3p could complementally bind to EGFR ( P<0.01). Compared with that in the negative control group, the expression of EGFR in the BGC823 cells in the miR-4795-3p group was significantly reduced ( P<0.01). Conclusion:miR-4795-3p inhibits the proliferation and invasion of gastric cancer BGC823 cells by targeting and negatively regulating EGFR expression.