摘要
目的 观察蛋白酶体抑制剂硼替佐米(BOR)联合急性早幼粒细胞白血病(APL)凋亡诱导剂亚砷酸(ATO)对NB4细胞株的作用.方法 BOR单独及联合ATO作用于NB4细胞,应用MTT法观察细胞的生长抑制效应;流式细胞术检测细胞周期变化及凋亡率;RT-PCR方法检测survivin mRNA的表达.结果 MTT法显示BOR对NB4细胞具有生长抑制作用,且能增强ATO对细胞的杀伤作用;流式细胞仪检测可见明显凋亡峰及G2/M期细胞周期阻滞;RT-PCR检测发现两药单独应用均能下调survivin mRNA的表达,联合作用时具相加效应.结论 ATO与BOR联合作用较单独作用有更强的细胞杀伤及诱导细胞凋亡活性,细胞周期G2/M期的阻滞及survivin mRNA表达的下降是蛋白酶体抑制剂及亚砷酸对白血病细胞株联合诱导凋亡的可能机制.
Objeetive To observe NB4 cells that is treated with both ATO and BOR.Methods MTT assay demonstrated that NB4 cell lines,growth inhibiting effect after interfered with BOR alone or BOR plus ATO.Flow cytometry detect cell cycle and apoptosis.RT-PCR method detect the expression of survivin mRNA.Results MTT assay showed depressant effect by BOR.BOR can strengthen cells,lethal effect by ATO.Flow cytometry investigate obvious apoptosis and cycle blockage of G2/M stage.RT-PCR discover that ATO or BOR can downregulate the expression of survivin mRNA alone,there is an additional effect if used them at the same time.Conclusion Combination of BOR and ATO have stronger inflictive and apoptosisinducing activity.The blockage of G2/M stage and degression of survivin mRNA is a possible mechanism that leads to cell apoptosis treated with BOR and ATO.
出处
《肿瘤研究与临床》
CAS
2008年第4期231-233,236,共4页
Cancer Research and Clinic
