Document Detail


Effects of Ginkgo biloba extract on cell proliferation and cytotoxicity in human hepatocellular carcinoma cells.
MedLine Citation:
PMID:  14695765     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIM: To study the effect of Ginkgo biloba extract (EGb 761) containing 22-27% flavonoids (ginkgo-flavone glycosides) and 5-7% terpenoids (ginkgolides and bilobalides) on cell proliferation and cytotoxicity in human hepatocellular carcinoma (HCC) cells. METHODS: Human HCC cell lines (HepG2 and Hep3B) were incubated with various concentrations (0-1 000 mg/L) of EGb 761 solution. After 24 h incubation, cell proliferation and cytotoxicity were determined by 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay and lactate dehydrogenase (LDH) release, respectively. After 48 h incubation, the expression of proliferating cell nuclear antigen (PCNA) and p53 protein was measured by Western blotting. RESULTS: The results showed that EGb 761 (50-1 000 mg/L) significantly suppressed cell proliferation and increased LDH release (P<0.05) in HepG2 and Hep3B cells compared with the control group. The cell proliferation of HepG2 and Hep3B cells treated with EGb 761 (1 000 mg/L) was 45% and 39% of the control group (P<0.05), respectively. LDH release of HepG2 cells without and with EGb 761 (1 000 mg/L) treatment was 6.7% and 37.7%, respectively, and that of Hep3B cells without and with EGb 761 (1 000 mg/L) treatment was 7.2% and 40.3%, respectively. The expression of PCNA and p53 protein in HepG2 cells treated with EGb 761 (1 000 mg/L) was 85% and 174% of the control group, respectively. CONCLUSION: Ginkgo biloba extract significantly can suppress proliferation and increase cytotoxicity in HepG2 and Hep3B cells. Additionally, Ginkgo biloba extract can decrease PCNA and increase p53 expression in HepG2 cells.
Authors:
Jane C J Chao; Chia Chou Chu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  World journal of gastroenterology : WJG     Volume:  10     ISSN:  1007-9327     ISO Abbreviation:  World J. Gastroenterol.     Publication Date:  2004 Jan 
Date Detail:
Created Date:  2003-12-26     Completed Date:  2004-02-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100883448     Medline TA:  World J Gastroenterol     Country:  China    
Other Details:
Languages:  eng     Pagination:  37-41     Citation Subset:  IM    
Affiliation:
School of Nutrition and Health Sciences, Taipei Medical University, Taipei 110, Taiwan, China. chenjui@tmu.edu.tw
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MeSH Terms
Descriptor/Qualifier:
Carcinoma, Hepatocellular*
Cell Death / drug effects
Cell Division / drug effects
Cell Line, Tumor / cytology,  drug effects,  metabolism
Ginkgo biloba*
Humans
Liver Neoplasms*
Plant Extracts / pharmacology*
Proliferating Cell Nuclear Antigen / metabolism
Tumor Suppressor Protein p53 / metabolism
Chemical
Reg. No./Substance:
0/Ginkgo biloba extract 761; 0/Plant Extracts; 0/Proliferating Cell Nuclear Antigen; 0/Tumor Suppressor Protein p53

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