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- W43117530 abstract "目的：探讨RNAi（RNA interference）技术抑制乳腺癌MCF-7细胞中AKT1和PI3KP85亚基的表达对MCF-7细胞增殖和侵袭等的影响。方法：将包含AKT1、PI3KP85两种siRNA开放阅读框的短发夹RNA（shRNA）重组腺病毒质粒表达载体rAd5-siAKT1-siPI3K转染至乳腺癌MCF-7细胞。应用real-timePCR和Western blotting检测转染后目的基因mRNA和蛋白的表达水平,并用Western blotting检测目的基因被沉默后PCNA、cyclinD1和P53的表达情况。应用MTT法、流式细胞术、2-D和3-DMatrigel实验检测MCF-7细胞转染前后的细胞增殖周期和侵袭能力。结果：重组腺病毒质粒表达载体rAd5-siAKT1-siPI3K介导的靶向AKT1,PI3KP85shRNA可以有效抑制目的基因AKT1和PI3Kp85的mRNA和蛋白表达;下游相关因子PCNA、cyclinD1的表达亦下调,P53表达则上调。MTT法结果显示rAd5-siAKT1-siPI3K组细胞生长抑制率〉50%,与未转染组和rAd5-siCtrl转染组比较,出现明显的G1/G0细胞周期阻滞;2-D和3-DMatrigel实验显示,未转染组和rAd5-siCtrl转染组细胞呈正常形态,而rAd5-siAKT1-siPI3K转染组细胞贴壁生长能力明显减低,细胞团块明显缩小。结论：靶向AKT1、PI3KP85亚基的shRNA技术可以抑制MCF-7细胞中AKT1、PI3KP85亚基的表达,抑制MCF-7细胞的体外增殖。" @default.
- W43117530 created "2016-06-24" @default.
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- W43117530 date "2010-01-01" @default.
- W43117530 modified "2023-09-23" @default.
- W43117530 title "RNAi调下AKT1、PI3K P85表达抑制乳腺癌MCF-7细胞的增殖" @default.
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