GRK6对多发性骨髓瘤MM1R细胞增殖的作用及其作用机制的初步研究

Zhongguo shi yan xue ye xue za zhi(2016)

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Abstract
目的:探讨GRK6对多发性骨髓瘤细胞增殖作用的调控及其机制.方法:通过构建干扰人GRK基因的慢病毒载体GRK6-shRNA,转染筛选获得稳定下调GRK6基因表达的多发性骨髓瘤细胞株MM1R.利用实时定量PCR及Westem blot验证慢病毒载体介导的GRK6基因表达下调的效果.选取GRK6表达下调最显著的细胞株检测GRK6对细胞增殖的影响.结果:构建干扰人GRK6基因的慢病毒载体GRK6-shRNA,转染多发性骨髓瘤MM 1R细胞,筛选并获得稳定下调GRK6基因的多发性骨髓瘤细胞株MM 1R.CCK-8试验结果显示,实验组细胞增殖活性明显低于对照组(P<0.05).流式细胞术检测显示:实验组细胞在G0/G1期被阻滞(P<0.05).Western Blot检测实验组Cyclin D1和CDK4水平相比较对照组明显降低.结论:成功构建了特异性干扰GRK6表达的慢病毒载体,获得可稳定下调GRK6的MM1R细胞株并且发现下调GRK6表达后,MM1R细胞可能通过抑制Cyclin D1和CDK4水平使MM1R细胞阻滞于G0/G1期,并显著地抑制了多发性骨髓瘤MM1R细胞的增殖.
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