摘要
目的观察转化生长因子-β1(TGF一β1)在胃癌细胞对Wnt信号通路的调节作用。方法对胃癌细胞MGC803使用5、10、20ng/ml TGF-β1重组蛋白诱导及TGF-β1小干扰RNA(siRNA)重组质粒基因沉默,Westernblot方法检测Wnt通路中与胃癌发生与进展相关的蛋白表达,并进行对比分析。结果TGF-β1导的胃癌细胞中,Wnt3a、β-连环蛋白(β-catenin)、细胞周期蛋白(Cyclin)D1蛋白相对表达量显著高于对照组,且表达量随TGF-β1组蛋白浓度升高而上升(Wnt3a对照组:1.0004±0.046;5ng/ml实验组:1.2334±0.033,P=0.025;10ng/ml实验组:2.233±0.122,P=0.001;20ng/ml实验组:3.2004±0.151,P=0.000。β-catenin对照组:1.000±0.035;5ng/ml实验组:1.8674±0.120,P=0.003;10ng/ml实验组:2.2004±0.153,P=0.002;20ng/ml实验组:1.967±0.120,P=0.002。CyclinD1对照组:1.000±0.029;5ng/ml实验组:1.1004±0.100,P=0.435;10ng/ml实验组:3.167±0.176,P=0.000;20ng/ml实验组:2.867±0.203,P=0.001)。而沉默TGF-β1因导致wnt3a、β-catenin、Cyclin D1蛋白相对表达量显著低于对照组(Wnt3a对照组:1.000±0.040;实验组:0.4004±0.058,P=0.002。β-catenin对照组:1.000±0.046;实验组:0.467±0.033,P=0.001。Cyclin D1对照组:1.0004±0.029;实验组:0.3334±0.088,P=0.003)。结论TGF-β1对胃癌细胞内的Wnt3a/β-catenin信号通路起正性调节作用,可通过激活Wnt3a/β-catenin信号通路调节胃癌细胞的上皮-间充质转化(EMT)过程。
Objective To investigate the regulatory effect of transforming growth factor-β1 (TGF-β1) via Wnt signaling pathway in gastric cancer cells. Methods Via 5, 10, 20 ng/ml TGF-β1 recombinant protein inducing or TGF-β1 small interfering RNA (siRNA) recombinant plasmid gene silencing in gastric cancer cell MGC803, detect the expression of protein related to the occurrence and progression of gastric cancer by Western blotting. Results In gastric cancer cells, TGF-β1 can induce high expression of Wnt3a, β-catenin and Cyclin D1 , while their expression increase with increased TGF-β1 recombinant protein concentration ( Wnt3a control group : 1. 000± 0. 046 ; 5ng/ml group : 1. 233 ± 0. 033, P = 0. 025 ; 10 ng/ml group: 2. 233±0. 122, P =0. 001 ; 20 ng/ml group: 3. 200 ±0. 151, P =0. 000. β-catenincontrol group : 1. 000± 0. 035 ; 5 ng/ml group : 1. 867±0. 120, P = 0. 003 ; 10 ng/ml group : 2. 200±0. 153, P=0. 002 ; 20 ng/ml group : 1.967±0.120, P=0. 002. Cyclin D1 control group : 1.000±0.029 ; 5 ng/ml group: 1. 100±0. 100, P =0. 435 ; 10 ng/ml group: 3.167±0.176, P =0. 000; 20 ng/ml group: 2. 867±0. 203, P = 0.001 ). And silencing TGF-β1gene leads to low expression of Wnt3a, β-cateninand Cyclin D1 ( Wnt3a control group : 1. 000±0. 040 ; siRNA group : 0.400± 0. 058, P = 0. 002. β-catenin NC: 1.000±0.046; siRNA group: 0.467±0.033, P=0.001. Cyclin D1 control group: 1.000±0.029; siRNA group: 0.333±0.088, P = 0.003 ). Conclusion TGF-β1 plays a positive role in the Wnt3a/ β-catenin signa/ing pathway in gastric cancer cells, and can regulate the epithelial-mesenchymal transition (EMT) process of gastric cancer cells by activating Wnt3a/β-catenin signaling pathway.
作者
解刚强
范永刚
王伟
翟景明
姚国良
张贝克
刘可峰
封冰
Xie Gangqiang;Fan Yonggang;Wang Wei;Zhai Jingming;Yao Guoliang;Zhang Beike;Liu Kefeng;Feng Bing(Department of General Surgery,the First Affiliated Hospital of University of He'nan Science and Technology,Luoyang 471003,China)
出处
《中华实验外科杂志》
CAS
CSCD
北大核心
2018年第11期2079-2081,共3页
Chinese Journal of Experimental Surgery