title: In vitro antiviral activity of 1,2,3,4,6-penta-O-galloyl-beta-D-glucose against hepatitis B virus.
abstract: This study examined the antiviral activity of the root of Paeonia lactiflora PALL. Among the solvent fractions of the crude drug, the ethyl acetate fraction showed anti-hepatitis B virus (HBV) activity (IC50, 8.1 microg/ml) in an HBV-producing HepG2.2.15 cell culture system. The active anti-HBV principle was isolated and identified as 1,2,3,4,6-penta-O-galloyl-beta-D-glucose (PGG) from the crude drug by activity-guided fractionation. PGG isolated from P. lactiflora was examined for the inhibition of HBV multiplication by measurement of HBV DNA and hepatitis B surface antigen (HBsAg) levels in the extracellular medium of HepG2.2.15 cells after 8-d treatment. PGG decreased the level of extracellular HBV (IC50, 1.0 microg/ml) in a dose-dependent manner. PGG also reduced the HBsAg level by 25% at a concentration of 4 microg/ml. The gallate structure of PGG may play a critical role in the inhibition of anti-HBV activity. These results suggest that PGG could be a candidate for developing an anti-HBV agent.
authors.affiliation: Gyeonggi Regional Research Center, Hankyong National University, Gyeonggi, Korea.
authors.forename: Sung-Jin
authors.initials: SJ
authors.lastname: Lee
authors.forename: Hak-Kyo
authors.initials: HK
authors.lastname: Lee
authors.forename: Min-Kyung
authors.initials: MK
authors.lastname: Jung
authors.forename: Woongchon
authors.initials: W
authors.lastname: Mar
mesh_terms: D000998:Antiviral Agents / Q000494:pharmacology*; D002478:Cells, Cultured; D004261:DNA Replication / Q000187:drug effects; D006514:Hepatitis B Surface Antigens / Q000096:biosynthesis; D006513:Hepatitis B e Antigens / Q000096:biosynthesis; D006515:Hepatitis B virus / Q000187:drug effects*; D006801:Humans; D047348:Hydrolyzable Tannins / Q000494:pharmacology*; D029596:Paeonia; D010936:Plant Extracts / Q000494:pharmacology
chemical_list: D000998:Antiviral Agents; D006514:Hepatitis B Surface Antigens; D006513:Hepatitis B e Antigens; D047348:Hydrolyzable Tannins; D010936:Plant Extracts; C435084:pentagalloylglucose