YANG Wen-hua, ZHANG Jian, GAO Li-wen, et al. Preliminary Investigation on Glaucocalyxin A-induced Cytotoxicity in K562 Cells[J]. Chinese journal of experimental traditional medical formulae, 2011, 17(19): 181-184.
YANG Wen-hua, ZHANG Jian, GAO Li-wen, et al. Preliminary Investigation on Glaucocalyxin A-induced Cytotoxicity in K562 Cells[J]. Chinese journal of experimental traditional medical formulae, 2011, 17(19): 181-184.DOI:
Objective: To investigate the involvement of reactive oxygen species(ROS)in glaucocalyxin A(GLA)-induced cytotoxicity of human chronic myelogenous leukemia K562 cells. Method: After 12
24 and 48 hours treatment by GLA
3-(4
5-dimethylthiazol-2-yl)-2
5-diphenyltetrazolium bromide(MTT)assay was performed to assess the cytotoxicity. The cell cycle was studied by flow cytometry. The ROS burst induced by GLA was also determined by flow cytometry. Result: Exposure of K562 cells to GLA lead to a dose-and time-dependent cytotoxicity with IC50 values of 6.168
2.968
1.086 mg·L-1 for 12
24
48 h
respectively. The block function of K562 cells cycle after treated GLA mainly occurred on G0/G1 phase. There is a generation of ROS in K562 cell after using GLA. NAC can increase the cell viability and decrease cell cycle arrest. Conclusion: The results suggested that ROS might be involved in the K562 cytotoxicity induced by GLA.