摘要
目的探讨贝母素甲对人白血病细胞K562细胞增殖的抑制效应,以及细胞氧化-还原状态失衡对此作用的影响。方法在体外培养K562细胞。运用四唑盐(MTT)比色法分析不同浓度贝母素甲(50、100、200、400、800μmol/L)处理24 h对K562细胞增殖的影响,并用Bliss法计算药物对细胞的半数抑制浓度(IC_(50))。采用分光光度法分别分析药物处理对K562细胞内活性氧(ROS)与谷胱甘肽(GSH)含量的影响。结果贝母素甲能剂量依赖性的抑制K562细胞的增殖,IC_(50)为238μmol/L。贝母素甲能诱导K562细胞产生ROS,下调其细胞内GSH含量,破坏细胞的氧化-还原平衡状态。活性氧清除剂N-乙酰-L-半胱氨酸(NAC)与GSH的预处理可以抑制贝母素甲的上述效应。结论贝母素甲可抑制K562细胞增殖,细胞氧化-还原失衡可能在这一过程中起重要作用。
Objective To investigate the effect of peimine on cell proliferation of human leukemia K562 cells and the function of redox imbalance in this progress. Methods The human leukemia K562 cells were cultured in vitro. After K562 cells were treated with peimine at concentrations of 50, 100, 200, 400 and 800 μmol/L for 24 h, the cell proliferation was measured by thiazolyl blue tetrazolium bromide（MTT） assay. And the half maximal inhibitory concentration（IC（50）） of peimine was calculated using the Bliss method. The changes of intracellular reactive oxygen species（ROS） and glutathione（GSH）concentration were detected using spectrophotometry. Results Peimine inhibited the proliferation of K562 cells in a dosedependent manner. And the IC（50） of peimine was 238 μmol/L. Furthermore, peimine could promote the ROS production and glutathione（GSH） depletion. The balance of oxidation-antioxidation function destroyed. Pre-incubation with antioxidants GSH or N acetyl cysteine（NAC） almost abolished the effects of peimine. Conclusion The present study therefore shows that peimine inhibits the proliferation activity in K562 cells. The redox imbalance may play a key role in this process.
出处
《中国医药导报》
CAS
2017年第18期16-19,共4页
China Medical Herald
基金
福建省教育厅科技项目(JA14161)
