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抑制线粒体呼吸链复合物Ⅰ活性对结肠癌细胞Caco2迁移侵袭能力的影响

Academic Journal of Second Military Medical University(2015)

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Abstract
目的 探讨抑制线粒体呼吸链复合物Ⅰ活性对结肠癌细胞Caco2迁移侵袭能力的影响及其可能的机制.方法 体外培养的Caco2给予线粒体呼吸链复合物Ⅰ活性抑制物鱼藤酮处理(1μmol/L),采用比色法检测线粒体呼吸链复合物Ⅰ的活性;通过Transwell小室实验检测Caco2细胞迁移、侵袭能力;通过流式细胞术检测细胞内活性氧(ROS)水平.结果 1 μmol/L鱼藤酮干预Caco2细胞48 h后,胞内线粒体呼吸链复合物Ⅰ活性低于未干预组(P<0.01);Transwell实验结果显示,1 μmol/L鱼藤酮干预组细胞的迁移率(30.4±1.4)%、侵袭率(20.3±1.0)%均高于未干预组Caco2细胞的迁移率(22.6±1.4)%和侵袭率(15.2±1.3)%,差异均有统计学意义(P<0.01,P<0.05);鱼藤酮干预组Cac02细胞内ROS水平(5.68±0.44)%高于未干预组(3.46±0.30)%,差异有统计学意义(P<0.01).结论 抑制线粒体呼吸链复合物Ⅰ活性可能通过增加胞内ROS水平的方式增强结肠癌细胞的迁移侵袭能力.
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Key words
mitochondria,respiratory chain complex Ⅰ,colon neoplasms,neoplasm metastasis,cell migration,cell invasion,reactive oxygen species
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