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Peroxiredoxin VI (PrxVI) is a bifunctional enzyme with non-selenium glutathione peroxidase and Ca 2+ -independent acidic phospholipase A 2 activities. We demonstrate that transfection-mediated PrxVI overexpression protects immortalized human WI-38 and murine NIH3T3 fibroblasts against cytotoxic doses of tert-butylhydroperoxide and H 2 O 2 . Mutants for either glutathione...
No alternative in vitro method exists fordetecting the potential long-term genotoxic effects ofmolecules at subcytotoxic concentrations, in terms ofdays and weeks after exposure(s) to the moleculetested. A theoretical model of cellular senescence ledto the concept that subcytotoxic stresses under anymolecules at subcytotoxic doses, such as moleculesunder development in the pharmaceutical, cosmetics...
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