摘要
目的观察小干扰RNA(siRNA)沉默活体内芳香烃受体核转运子(ARNT)基因对结肠癌HCT8细胞生长及体内成瘤的影响。方法ARNT-短发卡RNA(shRNA)慢病毒转染结肠癌HCT8细胞,建立裸鼠皮下移植瘤模型,聚合酶链反应(PCR)法测定HCT8细胞中ARNT mRNA表达量,Western blot法测定HCT8细胞中ARNT蛋白水平,细胞计数试剂盒(CCK-8)法测定HCT8细胞增殖,流式细胞仪测定HCT8细胞凋亡,建模后1个月称取移植瘤重量、测量移植瘤体积。结果siRNA-ARNT组ARNT mRNA相对表达量(0.489±0.057)显著低于siRNA-NC组(0.921±0.102)和空白对照组(1.000±0.000)(P=0.000)。siRNA-ARNT组ARNT蛋白表达量(0.478±0.025)显著低于siRNA-NC组(0.818±0.017)和空白对照组(0.827±0.013)(P=0.000)。siRNA-ARNT组细胞24、48、72 h吸光度(A)值均高于siRNA-NC组(0.512±0.107、1.012±0.123、1.121±0.128)和空白对照组(0.503±0.956、0.989±0.121、1.116±0.131)(P=0.000、0.000、0.000)。siRNA-ARNT组细胞凋亡率(55.13±2.78)%高于空白对照组[(4.75±0.68)%,P=0.000],低于siRNA-NC组[(68.32±3.12)%,P=0.000],siRNA-NC组细胞凋亡率高于空白对照组(P=0.000)。siRNA-ARNT组大鼠移植瘤重量[(0.551±0.171) g]和体积[(0.557±0.153) cm3]均高于siRNA-NC组[(0.351±0.082) g、(0.414±0.071) cm3]和空白对照组[(0.325±0.111) g、(0.396±0.063) cm3,P=0.000、0.000]。结论沉默ARNT基因促进结肠癌HCT8细胞增殖、抑制HCT8细胞凋亡、促进体内移植瘤生长,ARNT基因可能为结肠癌的抑癌基因。
ObjectiveTo observe the influence of small interfering RNA (siRNA) silencing Aryl hydrocarbon receptor nuclear transporter (ARNT) gene on colon cancer HCT8cell growth and vivo tumorigenicity.MethodsColon carcinoma cell HCT8 was transfected with ARNT-short hairpin RNA (shRNA) lentivirus. Rats subcutaneous tumor model were established. We used polymerase chain reaction (PCR) to assay the ARNT mRNA expression of HCT8 cell, Western blotting to assay ARNT protein level of HCT8 cells, cell counting kit-8 (CCK-8) to assay the proliferation of HCT8 cell, flow cytometry to assay the apoptosis of HCT8 cell. We weighed the tumor weight and measured tumor volume at one month after modeled.ResultsThe ARNT mRNA relative expression of siRNA-ARNT group (0.489±0.057) was significantly lower than that of siRNA-NC group (0.921±0.102) and control group (1.000±0.000) (P=0.000). The ARNT protein expression level of siRNA-ARNT group (0.478±0.025) was significantly lower than that of siRNA-NC group (0.818±0.017) and control group (0.827±0.013) (P=0.000). The 24, 48, 72 h Cells OD value of siRNA-ARNT group (0.824±0.121, 1.511±0.142, 1.602±0.154) were higher than that of siRNA-NC group (0.512±0.107, 1.012±0.123, 1.121±0.128) and control group (0.503±0.956, 0.989±0.121, 1.116±0.131) (P=0.000、0.000、0.000). The cell apoptosis rate of siRNA-ARNT group [(55.13±2.78)%] was higher than that of control group [(4.75±0.68)%, P=0.000], lower than that of siRNA-NC group [(68.32±3.12)%, P=0.000], the cell apoptosis rate of siRNA-NC group was higher than that of control group (P=0.000). Rat tumor weight [(0.551±0.171) g] and volume (0.557±0.153) cm3 of siRNA-ARNT group were higher than that of siRNA-NC group [(0.351±0.082) g, (0.414±0.071) cm3] and control group [(0.325±0.111) g, (0.396±0.063) cm3,P=0.000, 0.000].ConclusionSilencing ARNT gene can promote the proliferation of colon cancer HCT 8 cell, inhibite the apopto
出处
《中华实验外科杂志》
CSCD
北大核心
2017年第5期784-786,共3页
Chinese Journal of Experimental Surgery
基金
杭州市医药卫生科技计划项目(2102A045)
关键词
芳香烃受体核转运子
HCT8细胞株
RNA干扰
增殖
凋亡
Aryl hydrocarbon receptor nuclear transporter
HCT8 cell
RNA interference
Proliferation
Apoptosis