title: Effect of artemisinin/artesunate as inhibitors of hepatitis B virus production in an "in vitro" replicative system.
abstract: The antiviral effect against hepatitis B virus (HBV) of artemisinin, its derivative artesunate and other compounds highly purified from traditional Chinese medicine remedies, were investigated. HBV production by permanently transfected HepG2 2.2.15 cells was determined by measuring the release of surface protein (HBsAg) and HBV-DNA after drug exposure (0.01-100 microM) for 21 days. The forms of HBV-DNA released were investigated by Southern-blotting. Neutral Red retention test was used to evaluate drug-induced toxicity on host cells. The compounds were classified according to their potential interest as follows: (i) none: they had no effect on viral production (daidzein, daidzin, isonardosinon, nardofuran, nardosinon, tetrahydronardosinon and quercetin); (ii) low: they were able to markedly reduce viral production, but also induced toxicity on host cells (berberine and tannic acid) or they had no toxic effect on host cells but only had a moderate ability to reduce viral production (curcumin, baicalein, baicalin, bufalin, diallyl disulphide, glycyrrhizic acid and puerarin); (iii) high: they induced strong inhibition of viral production at concentrations at which host cell viability was not affected (artemisinin and artesunate). Moreover, artesunate in conjunction with lamivudine had synergic anti-HBV effects, which warrants further evaluation of artemisinin/artesunate as antiviral agents against HBV infection.
authors.affiliation: Department of Biochemistry and Molecular Biology, University of Salamanca, Spain.
authors.forename: Marta R
authors.initials: MR
authors.lastname: Romero
authors.forename: Thomas
authors.initials: T
authors.lastname: Efferth
authors.forename: Maria A
authors.initials: MA
authors.lastname: Serrano
authors.forename: Beatriz
authors.initials: B
authors.lastname: Castaño
authors.forename: Rocio I R
authors.initials: RI
authors.lastname: Macias
authors.forename: Oscar
authors.initials: O
authors.lastname: Briz
authors.forename: Jose J G
authors.initials: JJ
authors.lastname: Marin
mesh_terms: D019380:Anti-HIV Agents / Q000494:pharmacology; D000998:Antiviral Agents; D037621:Artemisinins / Q000737:chemistry / Q000494:pharmacology* / Q000633:toxicity; D000077332:Artesunate; D002460:Cell Line; D003470:Culture Media; D004279:DNA, Viral / Q000032:analysis / Q000096:biosynthesis; D006514:Hepatitis B Surface Antigens / Q000032:analysis; D006515:Hepatitis B virus / Q000187:drug effects*; D006801:Humans; D007202:Indicators and Reagents; D019259:Lamivudine / Q000494:pharmacology; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology; D012717:Sesquiterpenes / Q000737:chemistry / Q000494:pharmacology* / Q000633:toxicity; D014779:Virus Replication / Q000187:drug effects*
chemical_list: D019380:Anti-HIV Agents; D000998:Antiviral Agents; D037621:Artemisinins; D003470:Culture Media; D004279:DNA, Viral; D006514:Hepatitis B Surface Antigens; D007202:Indicators and Reagents; D010936:Plant Extracts; D012717:Sesquiterpenes; D019259:Lamivudine; D000077332:Artesunate; C031327:artemisinin