白血病细胞凋亡与bcl-2和bax-alpha表达的研究

被引:1
作者
王随照
林伟
刘文生
李江琪
机构
[1] 广东省人民医院!血液科、检验科
[2] 第一军医大学珠江医院血液科
[3] 第一
基金
广东省自然科学基金;
关键词
白血病; 凋亡; 基因,bcl-2; 基因,bax-alpha;
D O I
暂无
中图分类号
R733.7 [白血病];
学科分类号
100214 ;
摘要
目的 研究白血病细胞细胞凋亡率与 bcl- 2和bax- alpha阳性率及表达水平关系。方法 选择难治或复发的化疗耐药白血病患者和初治化疗敏感白血病患者各 10例 ,分离白血病细胞 ,柔红霉素 (5 0 0 ng/ ml)诱导凋亡 ,应用流式细胞术比较分析耐药组和敏感组白血病细胞的凋亡率与 bcl- 2和 bax- alpha阳性率和表达水平的关系。结果 化疗耐药组和化疗敏感组对柔红霉素诱导的凋亡率有显著差异 ,敏感组 (2 3.2 6 %± 12 .94% )显著高于耐药组 (2 .2 6 %± 1.44 % ) ,(P=0 .0 0 1) ;耐药组白血病细胞凋亡率与 bcl- 2阳性率呈负相关 (r=- 0 .6 47,P=0 .0 43) ,与 bax- alpha阳性率和相对荧光强度呈正相关 (r=0 .883,P=0 .0 0 1;r=0 .814,P=0 .0 0 4)及 bcl- 2 :bax- alpha比率呈负相关 (r=-0 .893,P=0 .0 0 1) ;敏感组凋亡率 bax- alpha的阳性率和荧光强度呈正相关 (r=0 .6 5 3,P=0 .0 41,r=0 .76 2 ,P=0 .0 10 ) ,与 bcl- 2 :bax- alpha比率呈负相关 (r=- 0 .741,P=0 .0 14)。结论 白血病细胞耐药性与细胞的凋亡抗性有关 ,这种凋亡抗性与 bcl- 2和 bax- alpha的表达比例增高有关 ,特别是 bax- alpha的表达水平
引用
收藏
页码:355 / 357+394 +394
页数:4
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