Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8437
Title: Molecular mechanisms of survival and apoptosis in RAW 264.7 macrophages under oxidative stress
Authors: Zhang, Y
Fong, CC
Wong, MS 
Tzang, CH
Lai, WP
Fong, WF
Sui, SF
Yang, M
Keywords: Apoptosis and survival
cDNA microarray
Hydrogen peroxide
RAW 264.7 macrophages
Reactive oxygen species
Issue Date: 2005
Source: Apoptosis, 2005, v. 10, no. 3, p. 545-556 How to cite?
Journal: Apoptosis 
Abstract: Organisms living in an aerobic environment are continuously exposed to reactive oxygen species (ROS). Apoptosis of cells can be induced by ROS and cells also develop negative feedback mechanisms to limit ROS induced cell death. In this study, RAW264.7 murine macrophage cells were treated with H 2O2 and cDNA microarray technique was used to produce gene expression profiles. We found that H2O2 treatment caused up-regulation of stress, survival and apoptosis related genes, and down-regulation of growth and cell cycle promoting genes. Numerous genes of metabolism pathways showed special expression patterns under oxidative stress: glycolysis and lipid synthesis related genes were down-regulated whereas the genes of lipid catabolism and protein synthesis were up-regulated. We also identified several signaling molecules as ROS-responsive, including p53, Akt, NF-κ B, ERK, JNK, p38, PKC and INF-γ . They played important roles in the process of apoptosis or cell survival. Finally, an interactive pathway involved in cellular response to oxidative stress was proposed to provide some insight into the molecular events of apoptosis induced by ROS and the feedback mechanisms involved in cell survival.
URI: http://hdl.handle.net/10397/8437
ISSN: 1360-8185
DOI: 10.1007/s10495-005-1885-0
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