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Regulation of Cell Survival and Death Signals Induced by Oxidative Stress

Oxidative stress stimulates two opposite signaling pathways leading to cell death and cell survival. Preferential selection of survival signals leads to the protection of cells against damage induced by reactive oxygen species, whereas preferential acceleration of death signals can be used to advant...

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Detalles Bibliográficos
Autores principales: Kuwabara, Mikinori, Asanuma, Taketoshi, Niwa, Koichi, Inanami, Osamu
Formato: Texto
Lenguaje:English
Publicado: the Society for Free Radical Research Japan 2008
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2533719/
https://www.ncbi.nlm.nih.gov/pubmed/18818753
http://dx.doi.org/10.3164/jcbn.2008045
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author Kuwabara, Mikinori
Asanuma, Taketoshi
Niwa, Koichi
Inanami, Osamu
author_facet Kuwabara, Mikinori
Asanuma, Taketoshi
Niwa, Koichi
Inanami, Osamu
author_sort Kuwabara, Mikinori
collection PubMed
description Oxidative stress stimulates two opposite signaling pathways leading to cell death and cell survival. Preferential selection of survival signals leads to the protection of cells against damage induced by reactive oxygen species, whereas preferential acceleration of death signals can be used to advantage in tumor therapy with oxidizing agents such as ionizing radiation and anticancer drugs. In vitro and in vivo experiments using cultured mammalian cells and experimental animals showed that ERK was included in survival signals and SAPK and p38 MAPK in death signals in oxidative stress. The activation of SAPK/JNK and subsequent expression of death receptor Fas on the cell surface caused the induction of cell death. The results mean that the acceleration of the activation of SAPK/JNK might lead to the enhancement of cell death by oxidizing agents like ionizing radiation and anticancer drugs. In fact, when cultured mammalian cells were exposed to ionizing radiation with 2-nitroimidazole derivatives having electrophilicity, the lethal effect of ionizing radiation was found to be enhanced together with the activation of SAPK/JNK and the enhancement of Fas expression. The activation of both survival and death signals was suppressed by the antioxidants N-acetylcystein and Trolox, suggesting that both signaling pathways are redox-regulated.
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spelling pubmed-25337192008-09-25 Regulation of Cell Survival and Death Signals Induced by Oxidative Stress Kuwabara, Mikinori Asanuma, Taketoshi Niwa, Koichi Inanami, Osamu J Clin Biochem Nutr Review Article Oxidative stress stimulates two opposite signaling pathways leading to cell death and cell survival. Preferential selection of survival signals leads to the protection of cells against damage induced by reactive oxygen species, whereas preferential acceleration of death signals can be used to advantage in tumor therapy with oxidizing agents such as ionizing radiation and anticancer drugs. In vitro and in vivo experiments using cultured mammalian cells and experimental animals showed that ERK was included in survival signals and SAPK and p38 MAPK in death signals in oxidative stress. The activation of SAPK/JNK and subsequent expression of death receptor Fas on the cell surface caused the induction of cell death. The results mean that the acceleration of the activation of SAPK/JNK might lead to the enhancement of cell death by oxidizing agents like ionizing radiation and anticancer drugs. In fact, when cultured mammalian cells were exposed to ionizing radiation with 2-nitroimidazole derivatives having electrophilicity, the lethal effect of ionizing radiation was found to be enhanced together with the activation of SAPK/JNK and the enhancement of Fas expression. The activation of both survival and death signals was suppressed by the antioxidants N-acetylcystein and Trolox, suggesting that both signaling pathways are redox-regulated. the Society for Free Radical Research Japan 2008-09 2008-08-30 /pmc/articles/PMC2533719/ /pubmed/18818753 http://dx.doi.org/10.3164/jcbn.2008045 Text en Copyright © 2008 JCBN This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Review Article
Kuwabara, Mikinori
Asanuma, Taketoshi
Niwa, Koichi
Inanami, Osamu
Regulation of Cell Survival and Death Signals Induced by Oxidative Stress
title Regulation of Cell Survival and Death Signals Induced by Oxidative Stress
title_full Regulation of Cell Survival and Death Signals Induced by Oxidative Stress
title_fullStr Regulation of Cell Survival and Death Signals Induced by Oxidative Stress
title_full_unstemmed Regulation of Cell Survival and Death Signals Induced by Oxidative Stress
title_short Regulation of Cell Survival and Death Signals Induced by Oxidative Stress
title_sort regulation of cell survival and death signals induced by oxidative stress
topic Review Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2533719/
https://www.ncbi.nlm.nih.gov/pubmed/18818753
http://dx.doi.org/10.3164/jcbn.2008045
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