C/EBP-ALPHA EXPRESSION IN ADIPOSE-TISSUE OF GENETICALLY-OBESE ZUCKER RATS

被引：15
作者：
ROLLAND, V
LELIEPVRE, X
HOUBIGUIAN, ML
LAVAU, M
DUGAIL, I
机构：
来源：
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS | 1995年 / 207卷 / 02期
关键词：
D O I：
10.1006/bbrc.1995.1252
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The adipose tissue of genetically obese Zucker rats is characterized by coordinated tissue specific overtranscription of a subset of genes related to lipid storage such as Glyceraldehyde-3-Phosphase Dehydrogenase (GAPDH). We show that CCAAT/Enhancer Binding Protein alpha (C/EBP alpha) is an activator or GAPDH proximal promoter in transiently transfected mature rat adipocytes. C/EBP alpha mRNA levels were increased in adipose tissue but not in liver of obese as compared to lean rats at 30 days of age, i.e., when obesity is fully expressed. Nevertheless at 16 days of age, although overdevelopment of adipose tissue could be detected in preobese rats, C/EUP alpha mRNA levels were similar whatever the genotype. In conclusion C/ERP alpha mRNA is overexpressed in adipose tissue of obese rats, suggesting a possible role for this factor in the activation of lipid storage-related genes in adipose tissue of obese rats. However, C/EBP alpha overexpression is not temporally related to the onset of obesity. (C) 1995 Academic Press, Inc.
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页码：761 / 767
页数：7
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