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- W2618272467 abstract "为探讨脐血CD34+ 细胞在不同细胞因子支持下体外扩增过程中caspase 3表达及意义 ,采用RT PCR ,Westernblot和流式细胞术对脐血CD34+ 细胞在体外扩增过程中的细胞增殖、细胞凋亡及caspase 3的表达进行了测定。检测结果显示 ,caspase 3mRNA在新鲜分离的脐血CD34+ 细胞中低水平表达 ,在细胞因子支持下体外培养3天 ,扩增的CD34+ 细胞中caspase 3mRNA和蛋白质水平表达上调 ,但在这两种细胞中仅能检测到分子量为 32kD的非活性酶原形式的caspase 3 ,随着体外培养时间的延长 ,在无早期效应细胞因子SCF或FL存在的条件下 ,caspase 3被激活 ,可检测到分子量为 2 0kD的裂解片段 ,细胞凋亡率增加。结论 :虽然造血干 /祖细胞的凋亡是个复杂的过程 ,但在脐血CD34+ 干 /祖细胞体外扩增过程中 ,caspase 3参与了细胞凋亡事件并发挥着重要的作用 ,早期效应细胞因子SCF和FL可减少造血干 /祖细胞的凋亡 ,对造血干 /祖细胞有保护作用" @default.
- W2618272467 created "2017-06-05" @default.
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- W2618272467 date "2002-01-01" @default.
- W2618272467 modified "2023-09-23" @default.
- W2618272467 title "Caspase-3在脐血CD34~+细胞中的表达及意义(英文)" @default.
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