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塞来昔布对胃癌细胞生长的抑制作用 被引量:1

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摘要 目的:观察特异性COX-2抑制剂塞来昔布对体外培养的SGC7901胃腺癌细胞生长及环氧化酶活性的作用. 方法:采用MTT比色法观察不同浓度的塞来昔布对COX- 2高表达的人胃癌细胞SGC7901生长的影响,免疫细胞化学方法检测COX-2蛋白的表达;同时用相差显微镜动态观察细胞形态及生长方式的改变. 结果:塞来昔布25 μmol/L对SGC7901细胞生长无抑制作用,作用72 h后细胞存活率为80.0%;50-100 μmol/L的塞来昔布与SGC7901细胞相互作用24 h细胞存活率分别为88.5%,80.7%,42.3%,48 h细胞存活率分别为79.8%, 60.2%,40.1%,72 h细胞存活率分别为58.6%,37.8%、21.2%. 塞来昔布同时减少COX-2蛋白表达;当浓度为50μmol/L的塞来昔布与胃癌SGC7901细胞作用后,COX-2表达明显下降,并呈剂量依赖关系. 结论:塞来昔布能抑制SGC7901胃癌细胞株的生长及COX-2蛋白表达.
出处 《世界华人消化杂志》 CAS 北大核心 2005年第4期555-556,共2页 World Chinese Journal of Digestology
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