目的:探讨MTA1基因沉默对宫颈癌细胞转移增殖的影响。方法:用慢病毒转染法稳定转染Siha细胞,转染同时进行实验分组。用RT-PCR技术和蛋白印迹法测定宫颈癌Siha、Hela细胞中MTA1 m RNA和蛋白的表达。Transwell体外侵袭实验检测转染后Siha...目的:探讨MTA1基因沉默对宫颈癌细胞转移增殖的影响。方法:用慢病毒转染法稳定转染Siha细胞,转染同时进行实验分组。用RT-PCR技术和蛋白印迹法测定宫颈癌Siha、Hela细胞中MTA1 m RNA和蛋白的表达。Transwell体外侵袭实验检测转染后Siha细胞的迁移能力,MTT检测法和克隆形成实验法检测转染后Siha细胞的细胞增殖能力,FACS细胞凋亡法检测转染后Siha细胞的细胞凋亡率,PI-FACS细胞周期法检测转染后Siha细胞的各个生长周期的细胞数。结果:(1)Transwell体外侵袭实验:相比NC组,KD组Transwell转移率经T-Test分析P=2.61E-08<0.05。(2)MTT检测结果表明:相比NC组,KD组细胞增殖减缓。(3)克隆形成实验结果显示:相比NC组,KD组克隆数经T-Test分析P值=0.000 6<0.05。(4)FACS细胞凋亡:相比两个对照组,KD组凋亡率经T-Test分析P<0.05。结论:MTA1基因促进宫颈癌细胞的转移和增殖,沉默MTA1基因表达能使宫颈癌细胞增殖及迁移能力下降,加速宫颈癌细胞的凋亡,为抑制肿瘤转移奠定实验基础,最后为宫颈癌的新型药物性靶向治疗提供有力的实验依据。展开更多
Objective: To observe the effect of MTA1 gene silencing by RNA interference on invasion and migration of esophageal carcinoma 9706 cells. Methods: siRNA expression vector targeting MTA1 gene was transfected into EC970...Objective: To observe the effect of MTA1 gene silencing by RNA interference on invasion and migration of esophageal carcinoma 9706 cells. Methods: siRNA expression vector targeting MTA1 gene was transfected into EC9706 cells by Lipofectamine method. MTA1 mRNA and protein expressions were detected through quantitative RT-PCR and Western Blot, respectively. The invasion and migration of EC9706 cells were evaluated by scrape wound healing assay and cell invasion assay in vitro. Results: MTA1 gene expression decreased significantly. The scrape wound of EC9706 cells healed more slowly and the cell population that cut through Matrigel were less in the EC9706 cells transfected with siRNA expression vector than non-transfected EC9706 cells and EC9706 cells transfected with blank vector (P < 0.05). Conclusion: MTA1 gene silencing by RNAi can inhibit the invasion and migration of esophageal carcinoma effectively. It is supposed that MTA1 gene may be a prospective molecule target in tumor therapy.展开更多
文摘目的:探讨MTA1基因沉默对宫颈癌细胞转移增殖的影响。方法:用慢病毒转染法稳定转染Siha细胞,转染同时进行实验分组。用RT-PCR技术和蛋白印迹法测定宫颈癌Siha、Hela细胞中MTA1 m RNA和蛋白的表达。Transwell体外侵袭实验检测转染后Siha细胞的迁移能力,MTT检测法和克隆形成实验法检测转染后Siha细胞的细胞增殖能力,FACS细胞凋亡法检测转染后Siha细胞的细胞凋亡率,PI-FACS细胞周期法检测转染后Siha细胞的各个生长周期的细胞数。结果:(1)Transwell体外侵袭实验:相比NC组,KD组Transwell转移率经T-Test分析P=2.61E-08<0.05。(2)MTT检测结果表明:相比NC组,KD组细胞增殖减缓。(3)克隆形成实验结果显示:相比NC组,KD组克隆数经T-Test分析P值=0.000 6<0.05。(4)FACS细胞凋亡:相比两个对照组,KD组凋亡率经T-Test分析P<0.05。结论:MTA1基因促进宫颈癌细胞的转移和增殖,沉默MTA1基因表达能使宫颈癌细胞增殖及迁移能力下降,加速宫颈癌细胞的凋亡,为抑制肿瘤转移奠定实验基础,最后为宫颈癌的新型药物性靶向治疗提供有力的实验依据。
基金Supported by a grant from the "Tenth Five-Year Plan" Research Foundation for the Key Construction Project (211 Projects) by Ministry of Education of China (2002)
文摘Objective: To observe the effect of MTA1 gene silencing by RNA interference on invasion and migration of esophageal carcinoma 9706 cells. Methods: siRNA expression vector targeting MTA1 gene was transfected into EC9706 cells by Lipofectamine method. MTA1 mRNA and protein expressions were detected through quantitative RT-PCR and Western Blot, respectively. The invasion and migration of EC9706 cells were evaluated by scrape wound healing assay and cell invasion assay in vitro. Results: MTA1 gene expression decreased significantly. The scrape wound of EC9706 cells healed more slowly and the cell population that cut through Matrigel were less in the EC9706 cells transfected with siRNA expression vector than non-transfected EC9706 cells and EC9706 cells transfected with blank vector (P < 0.05). Conclusion: MTA1 gene silencing by RNAi can inhibit the invasion and migration of esophageal carcinoma effectively. It is supposed that MTA1 gene may be a prospective molecule target in tumor therapy.
