Antiproliferative effects of cinobufacini on human hepatocellular carcinoma HepG2 cells detected by atomic force microscopy

被引:0
|
作者
Qing Wu [1 ]
Wei-Dong Lin [1 ]
Guan-Qun Liao [1 ]
Li-Guo Zhang [1 ]
Shun-Qian Wen [1 ]
Jia-Ying Lin [1 ]
机构
[1] Department of General Surgery,the Affiliated Foshan Hospital of Southern Medical University
关键词
Cinobufacini; Cell viability; Atomic force microscopy; HepG2; cells; Hepatocarcinoma;
D O I
暂无
中图分类号
R285.5 [中药实验药理];
学科分类号
1008 ;
摘要
AIM:To investigate the antiproliferative activity of cinobufacini on human hepatocellular carcinoma HepG2 cells and the possible mechanism of its action.METHODS:HepG2 cells were treated with different concentrations of cinobufacini.Cell viability was measured by methylthiazolyl tetrazolium(MTT) assay.Cell cycledistribution was analyzed by flow cytometry(FCM).Cytoskeletal and nuclear alterations were observed by fluorescein isothiocyanate-phalloidin and DAPI staining under a laser scanning confocal microscope.Changes in morphology and ultrastructure of cells were detected by atomic force microscopy(AFM) at the nanoscale level.RESULTS:MTT assay indicated that cinobufacini significantly inhibited the viability of HepG2 cells in a dosedependent manner.With the concentration of cinobufacini increasing from 0 to 0.10 mg/m L,the cell viability decreased from 74.9% ± 2.7% to 49.41% ± 2.2% and 39.24% ± 2.1%(P < 0.05).FCM analysis demonstrated cell cycle arrest at S phase induced by cinobufacini.The immunofluorescence studies of cytoskeletal and nuclear morphology showed that after cinobufacini treatment,the regular reorganization of actin filaments in HepG2 cells become chaotic,while the nuclei were not damaged seriously.Additionally,high-resolution AFM imaging revealed that cell morphology and ultrastructure changed a lot after treatment with cinobufacini.It appeared as significant shrinkage and deep pores in the cell membrane,with larger particles and a rougher cell surface.CONCLUSION:Cinobufacini inhibits the viability of HepG2 cells via cytoskeletal destruction and cell membrane toxicity.
引用
收藏
页码:854 / 861
页数:8
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