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扶正抑癌方含药血清对结肠癌lovo细胞E-cad、 N-cad和Snail蛋白表达的影响

China Cancer(2011)

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Abstract
[目的]通过观察扶正抑癌方含药血清对结肠癌lovo细胞E-cad、N-cad和Snail蛋白表达的影响,探讨扶正抑癌方对结肠癌细胞EMT的影响,从而进一步明确扶正抑癌方抑制结肠癌转移的机制。[方法]lovo细胞体外培养,制备大鼠不同浓度含药血清后,MTT法测定不同浓度含药血清对细胞增殖的影响;免疫荧光法检测E-cad、N-cad的表达,Western Blot检测Snail蛋白的表达。[结果]高剂量含药血清组24h对lovo细胞抑制率较中剂量、低剂量组更加明显,差异具有统计学意义(P<0.01),免疫荧光结果显示扶正抑癌方含药血清可以下调lovo细胞N-cad的表达和上调E-cad表达,与正常组和空白组相比,差异具有统计学意义(P<0.05);Western Blot检测结果显示扶正抑癌方含药血清能降低lovo细胞转录因子Snail蛋白的表达,与正常组和空白组比较差异具有统计学意义(P<0.05)。[结论]扶正抑癌方含药血清通过上调E-cad表达和下调N-cad的表达,抑制lovo细胞的EMT转变,从而降低lovo细胞的侵袭力和运动能力。
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Key words
Snail,cell line lovo,Fuzheng Yi'ai Decoction,colonic cancer,N-cad,E-cad,drug serum
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