title: 3-O-demethylswertipunicoside protects against oxidative toxicity in PC12 cells.
abstract: Xanthone compounds have been reported to inhibit cancer cell growth as well as possessing antioxidant properties. The xanthone compound 3-O-demethylswertipunicoside (3-ODS), extracted from Swertia punicea HEMSL, has not previously been demonstrated to have clear neuroprotective effects. In our study, the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) cell death assay revealed that treatment of PC12 cells with 3-ODS ameliorated the decreased cell viability induced by exposure to 1-methyl-4-phenylpyridinium ion (MPP+), rotenone or H2O2. The acridine orange/ethidium bromide (AO/EB) apoptosis assay demonstrated a significant suppression of cell death in PC12 cells. by 3-ODS treatment. 3-ODS increased the protein expression of both tyrosine hydroxylase (TH) and DJ-1 expression in PC12 cells. The current study demonstrates that 3-ODS has potential neuroprotective effects mediated via the elevation of TH and DJ-1 protein levels.
authors.affiliation: State Key Laboratory of Natural and Biomimetic Drugs, Department of Molecular and Cellular Pharmacology, Peking University, Beijing, PR China.
authors.forename: Shi-Ping
authors.initials: SP
authors.lastname: Zhang
authors.forename: Xin-Gang
authors.initials: XG
authors.lastname: Du
authors.forename: Xiao-Ping
authors.initials: XP
authors.lastname: Pu
mesh_terms: D000818:Animals; D016923:Cell Death / Q000187:drug effects / Q000502:physiology; D019610:Cytoprotection / Q000187:drug effects* / Q000502:physiology; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D018384:Oxidative Stress / Q000187:drug effects* / Q000502:physiology; D016716:PC12 Cells; D051381:Rats; D029967:Swertia; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*
chemical_list: D004365:Drugs, Chinese Herbal; D044004:Xanthones