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Role of JNK/MAPK in caffeic acid-induced apoptosis of leukemia K562 cells
Author(s): 
Pages: 26-28
Year: Issue:  1
Journal: THE JOURNAL OF PRACTICAL MEDICINE

Keyword:  白血病咖啡酸人白血病K562细胞细胞凋亡JNK/MAPK;
Abstract: 目的:探讨c-Jun氨基末端激酶/促分裂原活化蛋白激酶(JNK/MAPK)信号通路在咖啡酸(caffeic acid)诱导人白血病K562细胞凋亡中的作用.方法:体外培养人白血病K562细胞,采用噻唑蓝比色法(MTT)检测细胞的存活率:采用荧光显微镜观察和PI染色流式细胞术检测细胞凋亡率;采用Western blot方法检测磷酸化JNK/MAPK蛋白、JNK/MAPK蛋白的表达.结果:咖啡酸能明显抑制K562细胞的生长,且可诱导K562细胞凋亡.JNK/MAPK磷酸化的激活.在予以SP600125(JNK/MAPK特异性抑制剂)预处理后,咖啡酸抑制K562细胞生长的作用明显减弱,凋亡细胞减少,细胞凋亡率下降,JNK/MAPK活性显著下降.结论:咖啡酸可诱导K562细胞凋亡,其作用机制可能通过激活JNK/MAPK.
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