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尼美舒利对乳腺癌MDA-MB-231细胞生长调控作用的研究 被引量:1

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摘要 目的研究尼美舒利(nimesulide,NIM)体外对乳腺癌细胞MDA-MB-231生长抑制和诱导凋亡的作用,对其机制做进一步探讨。方法 MTT法检测不同浓度、时间NIM对乳腺癌MDA-MB-231细胞的生长抑制率;流式细胞技术分析细胞周期变化,计算细胞凋亡率;免疫组织化学检测bcl-2,bax,cox-2蛋白表达变化;RT-PCR半定量检测COX-2mRNA表达改变;ELISA法检测PGE2水平变化。结果 NIM可抑制乳腺癌MDA-MB-231细胞生长,呈浓度、时间依赖性;不同浓度NIM处理48h后,细胞内Bcl-2、COX-2蛋白及COX-2mRNA表达水平均明显降低,Bax蛋白水平明显升高(P〈0.05)。结论 NIM可抑制乳腺癌细胞MDA-MB-231细胞增殖,且呈时间和剂量依赖性。其机制与抑制COX-2有关外,还可能与调节bcl-2、bax等表达有关。
出处 《医学信息》 2010年第14期2312-2314,共3页 Journal of Medical Information
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