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Effect of 5-Aza-2′-deoxycytidine on SOCS-1 gene expression, proliferation and apoptosis in RPMI8226 cells
Author(s): 
Pages: 45-48,53
Year: Issue:  4
Journal: Acta Academiae Medicinae Shandong

Keyword:  DNA methylation5-Aza-2′-deoxycytidineSuppressor of cytokine signaling 1Multiple myeloma;
Abstract: 目的研究DNA甲基转移酶抑制剂5-杂氮-2′-脱氧胞苷(5-Aza-CdR)对人多发性骨髓瘤细胞株RPMI8226生物学活性以及SOCS-1基因表达的影响。方法不同浓度5-Aza-CdR(0.1、0.5、1.0、2.0、5.0μmol/L)对RPMI8226细胞干预后,采用MTT法检测细胞增殖活性;流式细胞术分析细胞凋亡及细胞周期的改变;Real-timePCR法检测各组细胞SOCS-1mRNA的表达。结果5-Aza-CdR对RPMI8226细胞的生长抑制有明显的时间和剂量依赖性(P<0.05);流式检测结果显示,0.1、0.5、1.0、2.0、5.0μmol/L5-Aza-CdR作用于RPMI8226细胞72h后,细胞凋亡率分别为(29.62±2.87)%、(39.98±2.53)%、(49.07±3.51)%、(60.15±4.54)%和(69.88±3.49)%,且呈剂量依赖性(P<0.05);与对照组相比,5-Aza-CdR处理RPMI8226细胞72h后,细胞阻滞于G0/G1期;Real-timePCR结果显示,SOCS-1基因在RPMI8226细胞中微弱表达,5-Aza-CdR作用后,SOCS-1mRNA表达水平呈剂量依赖性逐渐升高(P<0.05)。结论5-Aza-CdR显著抑制多发性骨髓瘤细胞RPMI8226增殖,可能与诱导SOCS-1基因去甲基化和SOCS-1再表达有关。
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