和厚朴酚诱导人非霍奇金淋巴瘤Raji细胞凋亡及其可能机制

目的探讨和厚朴酚(HNK)诱导人非霍奇金淋巴瘤Raji细胞凋亡及其可能机制。方法 MTT法检测不同浓度HNK对Raji细胞的增殖抑制作用。流式检测不同浓度HNK(0、7.5、15μg/ml)作用Raji细胞后细胞周期及凋亡率变化。Caspase8试剂盒检测Raji细胞内Caspase8的活化。RT-PCR法检测Raji细胞Bcl-2、Bad、Bax凋亡相关基因的表达。结果 HNK对Raji细胞的生长有明显抑制作用,且呈时间和剂量依赖关系,其中12、24、48 h的半数抑制浓度(IC50)分别为17.53、12.61、7.4μg/ml。流式显示经HNK处理后,细胞周期被阻滞在G0/G1期。经7.5、15μg/ml HNK作用24 h后,细胞早期凋亡率分别为(18.24±2.53)%、(28.44±2.48)%,显著高于对照组的早期凋亡率(4.84±1.15)%(P<0.01)。HNK可显著上调Raji细胞内Caspase8的活性(P<0.05)。RT-PCR显示,HNK处理后Raji细胞内促凋亡基因Bad表达显著上调,Bcl-2、Bax无明显变化(P<0.01)。结论 HNK可诱导人非霍奇金淋巴瘤Raji细胞凋亡,其机制可能与上调细胞内Caspase8的活性及诱导促凋亡基因Bad的表达有关。

Honokiol-induced apoptosis of human non-Hodgkin lymphoma Raji cells and its possible mechanism

Objective To investigate the apoptosis-inducing effect of honokiol on human non-Hodgkin lymphoma Raji cells and the possible mechanism.Methods Raji cells were treated with different concentrations of honokiol,and the proliferation of the cells was detected using MTT assay.Flow cytometry was employed to analyze the cell cycle changes and apoptosis of honokiol-treated cells.Caspase 8 activity in the cells was measured by caspase 8 kit,and RT-PCR was used to detect the expression of apoptosis-related genes Bcl...