摘要
目的:探究硫氧还蛋白(TXN)在胰腺癌中的表达及对胰腺癌细胞增殖、侵袭、迁移、凋亡的影响.方法:通过收集泛癌和TCGA胰腺癌转录组和临床数据,分析TXN家族基因的表达水平.通过荧光定量PCR(RT-qPCR)技术、蛋白免疫印迹法(Western blot)检测TXN在癌组织与癌旁组织中及不同细胞系的表达水平.通过使用小干扰RNA(siRNA)抑制胰腺癌Panc-1、BxPC-3细胞中TXN基因的表达,并与未抑制TXN基因表达的Panc-1、BxPC-3细胞进行对照实验,进而探究TXN对这2种细胞的增殖、迁移、侵袭和凋亡的影响.使用转录组数据和生存结果资料,以TXN表达中位值分为两组,绘制TXN高低表达两组的生存曲线图.结果:在胰腺癌组织和细胞中,TXN的表达水平明显高于癌旁组织和正常细胞(P＜0.05).抑制胰腺癌细胞的TXN的表达水平后,低表达的TXN水平的胰腺癌细胞增殖率、侵袭细胞数量、愈合率低于对照组的胰腺癌细胞,其凋亡率较正常胰腺癌细胞明显升高(P＜0.05).TXN在胰腺癌患者肿瘤内表达水平越高,其生存时间越短(P＜0.05).结论:TXN能增强胰腺癌细胞增殖、迁移和侵袭能力,并减弱细胞凋亡程度;胰腺癌组织中TXN表达量越高,预后越差.
Abstract
Objective:Investigate the expression of thioredoxin(TXN)in pancreatic cancer and its impact on the proliferation,invasion,migration,and apoptosis of pancreatic cancer cells.Methods:By collecting pan-cancer and TCGA pancreatic cancer transcriptome and clinical data,the expression levels of the TXN gene family were analyzed.The expression levels of TXN in cancer tissues,adjacent tissues,and different cell lines were detected by fluorescence quantitative PCR(RT-qPCR)and Western blotting.The expression of the TXN gene in Panc-1 and BxPC-3 pancre-atic cancer cells was inhibited using small interfering RNA(siRNA),and control experiments were conducted with Panc-1 and BxPC-3 cells with unblocked TXN gene expression to explore the ef-fects of TXN on the proliferation,migration,invasion,and apoptosis of these two types of cells.Transcriptional data and survival outcome data were used to divide TXN expression into two groups based on the median value,and survival curves of the high and low TXN expression groups were plotted.Results:In pancreatic cancer tissues and cells,the expression level of TXN was signifi-cantly higher than that in adjacent tissues and normal cells(P＜0.05).After inhibiting the expression of TXN in pancreatic cancer cells,the proliferation rate,invasion cell number,and healing rate of pancreatic cancer cells with low TXN expression were lower than those of the control group,and their apoptosis rate was significantly higher than that of normal pancreatic cancer cells(P＜0.05).The higher the expression level of TXN in the tumors of pancreatic cancer patients,the shorter their survival time(P＜0.05).Conclusion:TXN can enhance the proliferation,migration,and invasion ability of pancreatic cancer cells and weaken the degree of cell apoptosis;the higher the expression level of TXN in pancreatic cancer tissues,the worse the prognosis.
维普
万方数据