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KMID : 0613820080180060814
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Journal of Life Science
2008 Volume.18 No. 6 p.814 ~ p.825
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Proteome Analysis of Responses to Ascochlorin in LPS-induced Mouse Macrophage RAW264.7 Cells by 2-D Gel Electrophoresis and MALDI-TOF MS
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Chang Young-Chae
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Abstract
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Ascochlorin (ASC) is prenyl-phenol compound that was isolated from the fungus Ascochyta viciae. ASC reduces serum cholesterol and triglyceride levels, and suppresses hypertension, tumor development, ameliorates type I and II diabetes. Here, to better understand the mechanisms by which ASC regulates physiological or pathological events and induces responses in the pharmacological treatment of inflammation, we performed differential analysis of the proteome of the mouse macrophage RAW264.7 cells in response to ASC. In this study, we used a proteomic analysis of LPS-induced RAW264.7 cells treated by ASC, to identify proteins potentially involved in inflammatory processes. The RAW264.7 cell proteomes with and without treatment with ASC were compared using two-dimensional electrophoresis (2-D SDS-PAGE), matrix-assisted laser desorption/ionization mass spectrometry (MALDI-TOF-MS) and bioinformatics. The largest differences in expression were observed for the calreticulin (4-fold decrease), β-actin (4-fold decrease) and vimentin (1.5-fold decrease). In addition, rabaptin was increased 3-fold in RAW264.7 cells treated with ASC. The expression of some selected proteins was confirmed by RT-PCR analysis.
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KEYWORD
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Ascochlorin(ASC), lipopolysaccharide(LPS), macrophageRAW264.7cells, two-dimensionalelectrophoresis(2-DSDS-PAGE), matrix-assistedlaserdesorption/ionizationmassspectrometry(MALDI-TOF-MS)
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