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[Pro-apoptotic effects of luteolin on hepatoma HepG2 cells].
- Source :
-
Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences [Zhejiang Da Xue Xue Bao Yi Xue Ban] 2013 Sep; Vol. 42 (5), pp. 504-10. - Publication Year :
- 2013
-
Abstract
- Objective: To investigate the effect of luteolin on cell growth and apoptosis of HepG2 cells in vitro.<br />Methods: Cultured HepG2,HL60,A549 and LO2 cells were treated with luteolin for different doses (0 μg/ml,2.5 μg/ml,10 μg/ml and 20 μg/ml) and varied times (0 h,24 h,48 h and 72 h). Cell viability was measured with MTT assay and IC50 was calculated. The reactive oxygen species (ROS) levels in HepG2 cells treated with luteolin for 6 h and 12 h were measured with flow cytometry. Cell apoptosis of HepG2 cells treated with luteolin for 24h was examined with flow cytometry and Annexin V-FITC/PI. Expression levels of apoptosis pathway proteins (p53,ASPP2 and iASPP) in HepG2 cells were detected with western blot and the dose and time-effect was analyzed.<br />Results: Luteolin effectively inhibited tumor cell proliferation in a dose-and time-dependent manner,and the inhibition rates of 20 μg/ml Luteolin for 72 h were 39.34%,62.90%,57.57% and 62.90% to LO2,HepG2, HL60 and A549 cells,respectively. The intracellular ROS level was decreased in HepG2 cells by 13.88% and 41.11% after being treated with luteolin for 6 h and 12 h,respectively. The apoptosis rate of HepG2 cells treated with luteolin for 24 h was 14.43%,and western blot showed that luteolin reduced the expression level of iASPP by 77.07% and up-regulated the expression of p53 by 179.37% and ASPP2 by 725.02% in HepG2 cells treated with luteolin for 12 h.<br />Conclusion: Luteolin has ant-proliferative and pro-apoptotic activity on hepatoma HepG2 cells, which is associated with the altered expression of pro-apoptotic factors and decreased ROS level in HepG2 cells.
Details
- Language :
- Chinese
- ISSN :
- 1008-9292
- Volume :
- 42
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences
- Publication Type :
- Academic Journal
- Accession number :
- 24167130