5-杂氮-2’-脱氧胞苷对人结肠癌细胞E-cadherin基因表达及甲基化的影响

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背景与目的:结肠癌是最常见的恶性肿瘤之一,其发病机制仍未完全明了。目前认为DNA甲基化导致转录抑制是恶性肿瘤发生的重要机制之一。E-cadherin能抑制肿瘤的浸润和转移,被公认为是浸润、转移抑制基因。结肠癌常表现有E-cadherin基因失活。本研究通过检测人结肠癌细胞株HT-29中E-cadherin基因表达及甲基化状态,初步探讨结肠癌的发病机制。方法:光镜观察5-杂氮-2'-脱氧胞苷(5-Aza-CdR)干预前后细胞形态学变化 免疫细胞化学及RT-PCR检测不同浓度5-Aza-CdR干预对HT-29
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