title: Effects of hydroxylated resveratrol analogs on oxidative stress and cancer cells death in human acute T cell leukemia cell line: prooxidative potential of hydroxylated resveratrol analogs.
abstract: Resveratrol and its higher hydroxylated analogs have been reported to possess a variety of biological properties including antioxidant as well as prooxidant effects. The antioxidant properties are assumed to enable these compounds to protect cells from oxidative damage, however prooxidant activity are held likely to be responsible for their cytotoxic or pro-apoptotic effects. In present study the effects of resveratrol (Res) and its three derivatives: 3,3',4,4'-tetrahydroxy-trans-stilbene (M6), 3,4,4',5-tetrahydroxy-trans-stilbene (M8) and 3,3',4,4',5,5'-hexahydroxy-trans-stilbene (M12) were investigated on T cell leukemia Jurkat cells. The tested compounds have cytotoxic activity against cancer cells and IC50 values obtained in the Alamar blue assay were: 58.4 μM, 48.1 μM, 33.4 μM for and 13.8 μM for Res, M6, M8, M12, respectively. Furthermore, we also observed an increased activity of caspase 3 and 9, with significantly higher values in cells incubated with M8 and M12 than Res and M6. Cell death was accompanied by loss of mitochondrial potential, oxidative stress, decrease of glutathione level as well as loss of both mRNA expression and activity of superoxide dismutase (MnSOD). Cytotoxic activity may be connected with the formation of short-living prooxidative metabolites as compounds M8 and M12 were very instable in incubation medium. In conclusion, we elucidated the mechanisms responsible for cytotoxicity of hydroxylated resveratrol analogs in leukemia cells which may also apply to other polyphenols.
authors.affiliation: Department of Toxicology, Poznan University of Medical Sciences, Poznan, Poland.
authors.forename: Malgorzata
authors.initials: M
authors.lastname: Kucinska
authors.affiliation: Department of Toxicology, Poznan University of Medical Sciences, Poznan, Poland.
authors.forename: Hanna
authors.initials: H
authors.lastname: Piotrowska
authors.affiliation: Department of Pediatric Gastroenterology and Metabolic Diseases, 1st Chair of Pediatrics, Poznan University of Medical Sciences, Poland; Department of Pathology and Laboratory Medicine, Brown University, Providence, RI 02912, USA.
authors.forename: Michał W
authors.initials: MW
authors.lastname: Luczak
authors.affiliation: Department of Pathophysiology, Poznan University of Medical Sciences, Poznan, Poland.
authors.forename: Justyna
authors.initials: J
authors.lastname: Mikula-Pietrasik
authors.affiliation: Department of Pathophysiology, Poznan University of Medical Sciences, Poznan, Poland.
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Ksiazek
authors.affiliation: Department of Toxicology, Poznan University of Medical Sciences, Poznan, Poland.
authors.forename: Milena
authors.initials: M
authors.lastname: Wozniak
authors.affiliation: Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Poznan, Poland.
authors.forename: Marcin
authors.initials: M
authors.lastname: Wierzchowski
authors.affiliation: Medical Biology Unit, Medical University of Lublin, Poland.
authors.forename: Jaroslaw
authors.initials: J
authors.lastname: Dudka
authors.affiliation: Department of Clinical Pharmacy and Diagnostics, University of Vienna, Vienna, Austria.
authors.forename: Walter
authors.initials: W
authors.lastname: Jäger
authors.affiliation: Department of Toxicology, Poznan University of Medical Sciences, Poznan, Poland. Electronic address: marek.murias@ump.edu.pl.
authors.forename: Marek
authors.initials: M
authors.lastname: Murias
mesh_terms: D000970:Antineoplastic Agents / Q000737:chemistry / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D004355:Drug Stability; D006801:Humans; D006900:Hydroxylation; D019169:Jurkat Cells; D015394:Molecular Structure; D010084:Oxidation-Reduction; D018384:Oxidative Stress / Q000187:drug effects*; D054218:Precursor T-Cell Lymphoblastic Leukemia-Lymphoma / Q000188:drug therapy; D017382:Reactive Oxygen Species; D060888:Real-Time Polymerase Chain Reaction; D000077185:Resveratrol; D013267:Stilbenes / Q000737:chemistry* / Q000494:pharmacology*
chemical_list: C551466:3,3',5,5'-tetrahydroxystilbene; D000970:Antineoplastic Agents; D017382:Reactive Oxygen Species; D013267:Stilbenes; D000077185:Resveratrol
keywords: Caspase-3; Caspase-8; Caspase-9; Resveratrol; Resveratrol analogs; Superoxide dismutase