Biomaterial Database

Regulation of sterol carrier protein-2 gene expression in rat liver and small intestine. 1993

C L Baum, and S Kansal, and N O Davidson

Department of Medicine, University of Chicago, IL 60637.

Sterol carrier protein-2 (SCP2) is a peroxisomal protein most highly expressed in non-steroidogenic tissues such as liver and small intestine. We have examined SCP2 gene expression during development and after alterations in lipid and bile acid metabolism and compensatory cell growth in the rat. The developmental expression of SCP2 displayed a biphasic pattern of relative mRNA abundance with a peak at day 19 to 20 of fetal life, reaching adult levels by day 14 and after day 14 in small intestine. In adult rats there was no effect on SCP2 mRNA abundance, or the relative proportions of the four SCP2 transcripts after gemfibrozil treatment, 30-fold changes in hepatic cholesteryl ester and triglyceride levels, bile ligation, compensatory hepatic or renal growth. However, immunoblot analysis of tissue homogenates revealed that SCP2 protein is decreased by 75% in the livers of gemfibrozil-treated animals and increased by 5-fold at 48 h in regenerating liver and in the remaining kidney after unilateral nephrectomy. Taken together these results suggest that SCP2 gene expression is developmentally regulated and modulated translationally or post-translationally in the adult rat by gemfibrozil and compensatory cell growth.

UI	MeSH Term	Description	Entries
D006984	Hypertrophy	General increase in bulk of a part or organ due to CELL ENLARGEMENT and accumulation of FLUIDS AND SECRETIONS, not due to tumor formation, nor to an increase in the number of cells (HYPERPLASIA).	Hypertrophies
D007421	Intestine, Small	The portion of the GASTROINTESTINAL TRACT between the PYLORUS of the STOMACH and the ILEOCECAL VALVE of the LARGE INTESTINE. It is divisible into three portions: the DUODENUM, the JEJUNUM, and the ILEUM.	Small Intestine,Intestines, Small,Small Intestines
D007668	Kidney	Body organ that filters blood for the secretion of URINE and that regulates ion concentrations.	Kidneys
D008055	Lipids	A generic term for fats and lipoids, the alcohol-ether-soluble constituents of protoplasm, which are insoluble in water. They comprise the fats, fatty oils, essential oils, waxes, phospholipids, glycolipids, sulfolipids, aminolipids, chromolipids (lipochromes), and fatty acids. (Grant & Hackh's Chemical Dictionary, 5th ed)	Lipid
D008099	Liver	A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.	Livers
D008115	Liver Regeneration	Repair or renewal of hepatic tissue.	Liver Regenerations,Regeneration, Liver,Regenerations, Liver
D009392	Nephrectomy	Excision of kidney.	Heminephrectomy,Heminephrectomies,Nephrectomies
D010940	Plant Proteins	Proteins found in plants (flowers, herbs, shrubs, trees, etc.). The concept does not include proteins found in vegetables for which PLANT PROTEINS, DIETARY is available.	Plant Protein,Protein, Plant,Proteins, Plant
D002352	Carrier Proteins	Proteins that bind or transport specific substances in the blood, within the cell, or across cell membranes.	Binding Proteins,Carrier Protein,Transport Protein,Transport Proteins,Binding Protein,Protein, Carrier,Proteins, Carrier
D002784	Cholesterol	The principal sterol of all higher animals, distributed in body tissues, especially the brain and spinal cord, and in animal fats and oils.	Epicholesterol