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• W1636387298 abstract "Retrospective epidemiologic studies show that metformin reduced the incidence of pancreatic cancer in diabetic patients. One potential mechanism may be by altering reactive oxygen species (ROS) and apoptosis. In this in vitro study, we explore the role of ROS and apoptosis in mediating the growth-inhibitory effects of metformin in pancreatic cancer cells.We cultured MIA PaCa and Panc1 pancreatic cancer cells in medium containing physiological concentrations of glucose (5 mM) or supra-physiological concentrations of glucose and then treated cells with metformin. Cell viability, ROS production, apoptosis, and protein levels of manganese superoxide dismutase (MnSOD), NADPH oxidase (NOX) 2, and NOX4 were measured.Metformin decreased viability of MIA PaCa and Panc1 cells under physiological glucose conditions in comparison to untreated cells; metformin did not have any effect on human pancreatic normal epithelial (HPNE) cells. The decrease in cell survival was associated with decreased intracellular ROS, increased protein levels of MnSOD, and decreased levels of NOX2 and NOX4 proteins in MIA PaCa and Panc1 cells but not HPNE cells. Transfecting MIA PaCa and Panc1 cells with pcDNA3NOX4 protected against the anti-survival effects of metformin.Our findings suggest that metformin decreases cell survival by reducing ROS production, in part through down regulation of NOX4 protein expression." @default.
• W1636387298 created "2016-06-24" @default.
• W1636387298 creator A5059098802 @default.
• W1636387298 creator A5075838963 @default.
• W1636387298 date "2015-09-01" @default.
• W1636387298 modified "2023-10-16" @default.
• W1636387298 title "Metformin decreases growth of pancreatic cancer cells by decreasing reactive oxygen species: Role of NOX4" @default.
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• W1636387298 doi "https://doi.org/10.1016/j.bbrc.2015.07.118" @default.
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