Differential gene expressions in cells with low-dose hydrogen peroxide-induced adaptive response: a study with FDDRT-PCR / 南方医科大学学报
Journal of Southern Medical University
;
(12): 760-765, 2007.
Artigo
em Chinês
| WPRIM
| ID: wpr-337390
ABSTRACT
<p><b>OBJECTIVE</b>To identify differentially expressed genes in human embryo lung fibroblasts MRC-5 with adaptive response induced by low concentration of hydrogen peroxide (H(2)O(2)) using fluorescent differential display-RT-PCR (FDDRT-PCR).</p><p><b>METHODS</b>The dose-effect pattern of H2O2 toxicity was determined using MTT assay, and the dose of 0.088, 0.88, 8.8, 88 micro;mol/L was defined as the low concentration, and 1100 micromol/L as the high concentration. Adaptive response model was established in MRC-5 cells verified using LDH release and cell apoptosis analyses. Differentially expressed genes in the cells with exposure to different doses of H(2)O(2) were detected by FDDRT-PCR, and some of the differentially displayed genes were determined using real-time quantitative PCR.</p><p><b>RESULTS</b>Cells challenged with high-concentration H(2)O(2) for 1 h after H(2)O(2) pretreatment at low concentrations for 24 h resulted in lessened toxic effect in comparison with direct high-concentration H(2)O(2) exposure. The adaptive response of the cells was most obvious with H(2)O(2) pretreatment at 0.88 micromol/L. Altogether 60 differentially expressed genes were detected with FDDRT-PCR in different treatment groups, and 5 of them were identified and verified, including 1 unknown gene and 4 known genes (bcl-2, EIF3S5, NDUFS4 and RPS10).</p><p><b>CONCLUSION</b>According to the results of FDDRT-PCR, the genes bcl-2, EIF3S5, NDUFS4 and RPS10 can be involved in H(2)O(2)-induced adaptive response of the MRC-5 cells.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Farmacologia
/
Adaptação Fisiológica
/
Linhagem Celular
/
Sobrevivência Celular
/
Química
/
Regulação da Expressão Gênica
/
Oxidantes
/
DNA Complementar
/
Proteínas Proto-Oncogênicas c-bcl-2
/
Reação em Cadeia da Polimerase Via Transcriptase Reversa
Limite:
Humanos
Idioma:
Chinês
Revista:
Journal of Southern Medical University
Ano de publicação:
2007
Tipo de documento:
Artigo
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