中国医科大学学报2024，Vol.53Issue(7)：621-627,634,8.DOI:10.12007/j.issn.0258-4646.2024.07.008
PKM2通过调控活性氧依赖的PI3K/Akt信号通路影响膀胱尿路上皮细胞癌细胞的侵袭能力
Effect of PKM2 on the invasive ability of bladder urothelial carcinoma cells by regulating the reactive oxygen species-dependent PI3K/Akt signaling pathway
摘要
Abstract
Objective To investigate the effect of PKM2 on the invasive ability of bladder urothelial carcinoma cells by regulating the reactive oxygen species(ROS)-dependent PI3K/Akt signaling pathway.Methods Human bladder cancer T24 cells were divided into the control,si-NC,si-PKM2,and si-PKM2+IGF-1 groups.PKM2mRNA expression,proliferation,invasion and migration,and apoptosis of T24 cells were detected using real-time PCR,CCK-8 assay,Transwell assay,and Hoechst 33342 fluorescence staining and flow cyto-metry,respectively.The ROS level in the cells was measured using ROS fluorescence probe staining.Western blotting was used to detect the expression of PI3K,Akt,mTOR,caspase-3,Bax,and Bcl-2 proteins.Results The expression of PKM2 mRNA in human bladder cancer T24 cells was significantly higher than in normal bladder SV-HUC-1 cells(P<0.05).Compared to the control group,the expres-sion of PKM2mRNA,cell proliferation ability,number of invading cells,p-PI3K/PI3K ratio,p-Akt/Akt ratio,p-mTOR/mTOR ratio,and Bcl-2 protein expression in T24 cells in the si-PKM2 group were significantly decreased(P<0.05),whereas the apoptosis rate,relative ROS level,and expression of Bax and caspase-3 proteins were significantly increased(P<0.05).Compared to the si-PKM2 group,the expression of PKM2mRNA,cell proliferation ability,number of invading cells,p-PI3K/PI3K ratio,p-Akt/Akt ratio,p-mTOR/mTOR ratio,and Bcl-2 protein expression in T24 cells in the si-PKM2+IGF-1 group were significantly increased(P<0.05),whereas the apoptosis rate,relative ROS level,and expression of Bax and caspase-3 proteins were significantly decreased(P<0.05).Conclusion Knockdown of PKM2can increase the level of ROS in bladder urothelial carcinoma cells and inhibit the activation of the PI3K/Akt/mTOR signaling pathway,thus inhibiting cell invasion and promoting cell apoptosis.关键词
M2型丙酮酸激酶/膀胱尿路上皮细胞癌/活性氧/PI3K/Akt/mTOR信号通路Key words
pyruvate kinase M2/bladder urothelial carcinoma/reactive oxygen species/PI3K/Akt/mTOR signaling pathway分类
医药卫生引用本文复制引用
梁凯,殷磊,陈琦..PKM2通过调控活性氧依赖的PI3K/Akt信号通路影响膀胱尿路上皮细胞癌细胞的侵袭能力[J].中国医科大学学报,2024,53(7):621-627,634,8.基金项目
辽宁省科技厅应用基础研究计划[辽科发(2022)43号] （2022）
