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Comparison of the effectiveness of eukaryotic expression vectors expressing tumor suppressor genes p16INK4a and p53 in inhibiting leukemic cells proliferation
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- Author:
- No author available
- Journal Title:
- JOURNAL OF LEUKEMIA & LYMPHOMA
- Issue:
- 1
- DOI:
- 10.3760/cma.j.issn.1009-9921.2007.01.005
- Key Word:
- 白血病;基因p16;基因p53;转染
Abstract： 目的 比较野生型p16INK4a、p53抑癌基因的表达对白血病细胞株K562和HL60的生长抑制.方法 采用脂质体介导野生型p16INK4a、p53抑癌基因转染K562、HL60细胞并进行G418筛选,免疫印渍检测p16INK4a、p53基因的表达,通过细胞生长曲线检测细胞活力,流式细胞仪进行细胞DNA周期分析及细胞凋亡分析,采用联苯胺氧化试验检测K562细胞的分化.结果 转染后p53、p16INK4a在K562及HL60细胞中表达;与对照细胞相比,实验组细胞生长受到明显的抑制,G1期细胞数增加,S期细胞减少.与p16INK4a相比,抑癌基因p53使细胞表达Annexin V增加,显示出更强的致凋亡现象,尤其在HL60细胞株.结论 抑癌基因p16INK4a、p53能有效抑制白血病细胞株的生长,可能更适合复发、难治性白血病的基因治疗.
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