Profile of Differentially Expressed Genes in Blood Vessels and Blood Cells of Hyperlipidemia Rats Using Suppression Subtractive Hybridization
Platelets, macrophages, endothelial cells, and smooth muscle cells can all contribute to atherosclerosis. To investigate the molecular events leading to atherosclerosis involving platelets, macrophages, endothelial cells, and smooth muscle cells, we carried out suppression subtractive hybridization (SSH) to generate a profile ofgenes overexpressed in the aorta and blood cells in high fat diet rats. From 85 random SSH-cDNA clones, we have screened 23 clones by Northern blotting, which were scored as overexpressed in the aorta and blood cells in high fat diet rats compared to normal diet rats. Sequencing showed that the gene corresponded to the known gene in the public databases, previously shown to be overexpressed in atherosclerosis, heparin-binding epidermal growth factor (EGF)-like growth factor (HB-EGF), and local production was seen in vascular smooth muscle and endothelial cells by RT-PCR and Western blotting. These results show that SSH provides a very efficient means to produce a profile of differentially expressed genes in atherosclerosis. The identified gene may provide novel points of therapeutic intervention and pathophysiological mechanisms in atherosclerosis.
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Document Type: Research Article
Publication date: 2005-08-01
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