Abstract
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. Key words: Proteasomes inhibiter; Arsenites; Cell apoptosis; Leukemia cell lines NB4
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