Comparative Effects of Food-Derived Polyphenols on the Viability and Apoptosis of a Human Hepatoma Cell Line (HepG2)

• Published in: Journal of agricultural and food chemistry Vol. 53; no. 4; pp. 1271 - 1280
• Main Authors: Ramos, Sonia, Alía, Mario, Bravo, Laura, Goya, Luis
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 23-02-2005
• Subjects: anticarcinogenic activity; apoptosis; Apoptosis - drug effects; Biological and medical sciences; Carcinoma, Hepatocellular; Catechin - pharmacology; cell cycle; Cell Cycle - drug effects; cell lines; cell proliferation; Cell Survival - drug effects; chlorogenic acid; Chlorogenic Acid - pharmacology; epicatechin; Flavonoids - pharmacology; Food industries; Fragaria; Fruit - chemistry; Fruit and vegetable industries; fruits (food); Fundamental and applied biological sciences. Psychology; hepatoma; Humans; Liver Neoplasms; medicinal properties; Phenols - pharmacology; Plant Extracts - pharmacology; plums; Polyphenols; Prunus; quercetin; Quercetin - pharmacology; strawberries; Tumor Cells, Cultured; vegetables; viability; Human; Fragaria; Fruit; cell cycle; Rosaceae; apoptosis; HepG2 cells; In vitro; Cycle; Polyphenol; Plum; Cell line; cell viability; Dicotyledones; Strawberry; Angiospermae; Polyphenols; Spermatophyta; Proanthocyanidin; Cell; Viability; Food
• ISSN: 0021-8561; 1520-5118
• DOI: 10.1021/jf0490798

Consumption of fruits and vegetables, which are rich in polyphenols, has been associated with a reduced risk of chronic diseases such as cancer. Dietary polyphenols have antioxidant and antiproliferative properties that might explain their beneficial effect on cancer prevention. The aim of this study was to investigate the effects of different pure polyphenols [quercetin, chlorogenic acid, and (−)-epicatechin] and natural fruit extracts (strawberry and plum) on viability or apoptosis of human hepatoma HepG2 cells. The treatment of cells for 18 h with quercetin and fruit extracts reduced cell viability in a dose-dependent manner; however, chlorogenic acid and (−)-epicatechin had no prominent effects on the cell death rate. Similarly, quercetin and strawberry and plum extracts, rather than chlorogenic acid and (−)-epicatechin, induced apoptosis in HepG2 cells. Moreover, quercetin and fruit extracts arrested the G1 phase in the cell cycle progression prior to apoptosis. Quercetin and strawberry and plum extracts may induce apoptosis and contribute to a reduced cell viability in HepG2 cells. Keywords: Polyphenols; strawberry; plum; HepG2 cells; cell viability; cell cycle; apoptosis