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CASK下调表达对人血管内皮细胞ECV-304增殖能力的影响

, PP. 1144-1146

Keywords: RNA干扰,钙/钙调蛋白依赖性丝氨酸蛋白激酶,真核细胞转染,细胞增殖

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Abstract:

目的建立CASK下调表达细胞株,研究钙/钙调蛋白依赖性丝氨酸蛋白激酶(calcium,calmodulin-associatedserine/threoninekinase,CASK)下调表达对ECV-304细胞增殖能力的影响。方法将包含针对CASK基因干扰siRNA片段的pGenesil-1-hCASK重组质粒转染人ECV-304细胞株,经G418加压筛选,成功筛选出CASK下调表达的细胞株。用蛋白免疫印迹法鉴定转染细胞中CASK基因的表达水平。采用流式细胞技术、MTT法观察CASK下调表达对ECV-304细胞增殖能力的变化。结果成功筛选出CASK下调表达ECV-304细胞株(siCASK细胞株),这些细胞在传代过程中绿色荧光蛋白能维持表达,细胞株中转染阳性率在90%以上;经蛋白免疫印迹法检测CASK表达明显降低;siCASK细胞株中G0/G1细胞比率下降,G2M期细胞比率明显上升,增殖指数明显提高,生长曲线左移。结论成功建立了CASK下调表达的ECV-304细胞株,CASK下调表达可导致细胞增殖能力增强。

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