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Glutathione reductase plays an anti-apoptotic role against oxidative stress in human hepatoma cells
- Authors
- Kim, Su-Jung; Jung, Hyun-Joo; Hyun, Dong-Hoon; Park, Eun-Hee; Kim, Young-Myeong; Lim, Chang-Jin
- Issue Date
- Aug-2010
- Publisher
- ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
- Keywords
- Glutathione reductase; Glutathione; Apoptosis; Hepatoma cells; Reactive oxygen species; Hydrogen peroxide; HepG2
- Citation
- BIOCHIMIE, v.92, no.8, pp 927 - 932
- Pages
- 6
- Journal Title
- BIOCHIMIE
- Volume
- 92
- Number
- 8
- Start Page
- 927
- End Page
- 932
- ISSN
- 0300-9084
1638-6183
- Abstract
- The cellular roles of glutathione reductase (GR) in the reactive oxygen species (ROS)-induced apoptosis were studied using the HepG2 cells transfected with GR. The overexpression of GR caused a marked enhancement in reduced and oxidized glutathione (GSH/GSSG) ratio, and significantly decreased ROS levels in the stable transfectants. Hydrogen peroxide (H2O2), under the optimal condition for apoptosis, significantly decreased cellular viability and total GSH content, and rather increased ROS level, apoptotic percentage and caspase-3 activity in the mock-transfected cells. However, hydrogen peroxide could not largely generate these apoptotic changes in cellular viability, ROS level, apoptotic percentage, caspase-3 activity and total GSH content in the cells overexpressing GR. Taken together, GR may play a protective role against oxidative stress. (C) 2010 Elsevier Masson SAS. All rights reserved.
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