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双启动子shRNA干扰的协同效应

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摘要 目的构建含有两段不同靶特异干扰序列的双启动子shRNA载体,并比较其与单个靶特异干扰序列的shRNA载体的干扰效应。方法通过PCR方法扩增H1启动子序列,构建含有U6和H1双启动子的shRNA载体,命名为PLKO.1-H1。设计2对针对EGFP基因不同位点的shRNA片段,同时设计2对无干扰作用的片段shS1和shS2作为对照。分别构建携带上述片段的慢病毒表达载体shEGFP1-H1-shS2、shS1-H1-shEGFP2及shEGFP1-H1-shEGFP2,同时以shS1-H1-shS2质粒作为对照。将重组质粒转染293t细胞,收集病毒感染Hela/EGFP细胞。比较各组之间细胞的荧光强度,并以Western blot检测EGFP的蛋白表达情况。结果成功构建含有双启动子的shRNA慢病毒表达载体。实验组与对照组相比,EGFP蛋白表达水平明显下调,以shEGFP1-H1-shEGFP2重组质粒干扰效应最强。结论含有两段不同靶特异干扰序列的双启动子shRNA载体存在协同干扰效应。
作者 崔文静 张矫 马祥敏 王雯雯 王欣
机构地区 天津医科大学附属肿瘤医院
出处 《山东医药》 CAS 2013年第11期25-28,共4页 Shandong Medical Journal
关键词 双启动子 RNA干扰 协同效应
分类号 Q81 [生物学—生物工程]
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参考文献10

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共引文献11

山东医药
2013年 第11期

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