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沉默EC9706细胞NS基因对裸鼠移植瘤组织中EGF、EGFR基因表达的影响
Authors
关文池
吴卫东
+3 more
张功员
张巧
李晟磊
Publication date
15 July 2011
Publisher
Abstract
目的建立裸鼠食管癌移植瘤模型,探讨由RNAi诱导的EC9706细胞核干细胞因子(nucleostemin,NS)基因沉默对裸鼠移植瘤组织中EGF、EGFR基因表达的影响。方法裸鼠15只,采用STATA 8.0编制随机化分组程序,均分为3组,分别皮下注入pRNAT-U6.1-siNS2转染的EC9706细胞(siRNA干预组),pRNAT-U6.1-siC转染的EC9706细胞(无关siRNA对照组)以及正常EC9706细胞(空白对照组),接种5周,观察移植瘤生长情况,应用免疫组织化学方法和原位杂交技术检测裸鼠移植瘤组织中NS、EGF、EGFR基因蛋白和mRNA的表达。结果无关siRNA对照组及空白对照组第4天于接种部位出现肉眼可见的肿块,siRNA干预组于第6天在相应部位发现肉眼可见肿块,第5周各组裸鼠成瘤率均为100%。siRNA干预组、无关siRNA对照组及空白对照组裸鼠移植瘤组织中NS、EGF、EGFR蛋白和mRNA的阳性表达率比较差异显著(P<0.05)。相对于无关siRNA对照组和空白对照组,siRNA干预组裸鼠肿瘤组织中NS蛋白及mRNA的阳性表达率均降低。结论 EC9706细胞沉默NS基因可降低裸鼠体内EGF、EGFR基因的表达
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Last time updated on 16/06/2016