摘要
Abstract
Objective To investigate the expression and significance of mitogen-activated protein kinase(MAPK)14 cyclic RNA(circMAPK14)in gastric cancer tissues.Methods Thetissue samples of 29 gastric cancer patients in this hospital were collected,and the expression levels of circMAPK14 in gastric cancer and its paracancerous tissues,human gastric cancer cell line SGC7901 and normal gastric mucosal epithelial cell GES-1 were detected by reverse transcription real-time quantitative fluroescence quantitative PCR(RT-qPCR).After using small interfering RNA(siRNA)to reduce the expression level of circMAPK14,the effects on cell proliferation,apoptosis and migration,as well as on the expression of MAPK14 and apoptosis-related genes were observed.Results The expression level of circMAPK14 in the cancerous tissues of gastric cancer patients was significantly lower than that in paracancerous tissues(P＜0.01),and the expression level of circ-MAPK14 mRNA in SGC7901 was significantly lower than in GES-1(P＜0.01).After silencing the expres-sion of circMAPK14 by siRNA,the proliferation cells and migration of SGC7901 cells were promoted,and ap-optosis was inhibited.The decreased expression level of circMAPK14 enhanced the phosphorylation level of MAPK14 and weakened the expression of Bax mRNA,Puma mRNA,Noxa mRNA and other genes(P＜0.01).Con-clusion CircMAPK14 may regulate the MAPK signaling pathway by affecting the activity of MAPK14,which in turn regulates the expression of apoptosis-related genes and ultimately affects the gastric cancer process.关键词
胃癌/circMAPK14/增殖/凋亡/迁移/MAPK14信号通路Key words
gastric cancer/circMAPK14/proliferation/apoptosis/migration/MAPK14 signaling path-way分类
医药卫生
