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The Role of Hydrogen Peroxide and Peroxiredoxins throughout the Cell Cycle

Department of Life Science, Fluorescence Core Imaging Center, and Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 03760, Korea
Author to whom correspondence should be addressed.
Antioxidants 2020, 9(4), 280;
Received: 28 February 2020 / Revised: 23 March 2020 / Accepted: 24 March 2020 / Published: 26 March 2020
(This article belongs to the Special Issue Peroxiredoxin)
Hydrogen peroxide (H2O2) is an oxidizing agent that induces cellular damage at inappropriate concentrations and gives rise to an arrest during cell cycle progression, causing cell death. Recent evidence indicates that H2O2 also acts as a promoter for cell cycle progression by oxidizing specific thiol proteins. The intracellular concentration of H2O2 is regulated tightly, enabling its use as a cellular signaling molecule while minimizing its potential to cause cellular damage. Peroxiredoxins (Prxs) have peroxidase activity toward H2O2, organic hydroperoxides, and peroxynitrite for protecting cells from oxidative stress. They are suggested to work as signaling mediators, allowing the local accumulation of H2O2 by inactivating their peroxidase activity uniquely compared with other antioxidant proteins such as catalase and glutathione peroxidase. Given that Prxs are highly sensitive to oxidation by H2O2, they act as sensors and transducers of H2O2 signaling via transferring their oxidation state to effector proteins. The concentrations of intracellular H2O2 increase as the cell cycle progresses from G1 to mitosis. Here, we summarize the roles of Prxs with regard to the regulation of cell cycle-dependent kinase activity and anaphase-promoting complex/cyclosome in terms of changes in H2O2 levels. Protection of the cell from unwanted progression of the cell cycle is suggested to be a role of Prx. We discuss the possible roles of Prxs to control H2O2 levels. View Full-Text
Keywords: hydrogen peroxide; peroxiredoxin; cell cycle; cyclin-dependent kinase; centrosome hydrogen peroxide; peroxiredoxin; cell cycle; cyclin-dependent kinase; centrosome
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MDPI and ACS Style

Heo, S.; Kim, S.; Kang, D. The Role of Hydrogen Peroxide and Peroxiredoxins throughout the Cell Cycle. Antioxidants 2020, 9, 280.

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