Proteomic analysis for the anti-apoptotic effects of cystamine on apoptosis-prone macrophage
| Autor: | Wen-Xian Lai, Sin-Lun Li, Shao-Hsuan Kao, Jau-Song Yu, Bor-Show Tzang, Tsai-Ching Hsu, Jeng-Ting Chen |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Proteomics
MAPK/ERK pathway Tissue transglutaminase Immunoblotting Cystamine Gene Expression Apoptosis Enzyme-Linked Immunosorbent Assay Biology medicine.disease_cause Peptide Mapping Biochemistry Mice chemistry.chemical_compound Extracellular medicine Animals Lupus Erythematosus Systemic Electrophoresis Gel Two-Dimensional Enzyme Inhibitors Molecular Biology Mice Inbred BALB C Mice Inbred NZB Kinase Macrophages Cell Biology Molecular biology Gene Expression Regulation chemistry biology.protein Phosphorylation Female Oxidative stress |
| Zdroj: | Journal of Cellular Biochemistry. 110:660-670 |
| ISSN: | 0730-2312 |
| DOI: | 10.1002/jcb.22577 |
| Popis: | Increased macrophage vulnerability is associated with progression of systemic lupus erythematosus. Our previous studies have shown that cystamine, an inhibitor of transglutaminase 2 (TG2), alleviated the apoptosis of hepatocyte and brain cell in lupus-prone mice NZB/W-F1. In present study, we further investigated the effects of cystamine on apoptosis-prone macrophages (APMs) in the lupus mice. Using two-dimensional gel electrophoresis (2-DE) analysis, we found that cystamine induced a differential protein expression pattern of APM as comparing to the PBS control. The protein spots presenting differential level between cystamine and PBS treatment were then identified by peptide-mass fingerprinting (PMF). After bioinformatic analysis, these identified proteins were found involved in mitochondrial apoptotic pathway, oxidative stress, and mitogen-activated protein (MAP) kinase-mediated pathway. Further investigation revealed that cystamine significantly decreased the levels of apoptotic Bax and Apaf-1 and the activity of caspase-3, and increased the levels of anti-apoptotic Bcl-2 in APM. We also found that these apoptotic mediators were up-regulated in a correlation with the progression of lupus severity in NZB/W-F1, which were little affected in BALB/c mice. We also found that the reduced serum glutathione was restored by cystamine in NZB/W-F1. Interestingly, the phosphorylation of extracellular signal-regulated kinase 1/2 (ERK1/2) in APM and the phagocytic ability was diminished in presence of cystamine. In conclusion, our findings indicate that cystamine significantly inhibited mitochondrial pathway, induced antioxidant proteins, and diminished phosphorylation of extracellular ERK1/2, which may alleviate the apoptosis and the phagocytic ability of APM. |
| Databáze: | OpenAIRE |
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