Abstract
We have studied the structure and regulation of glycerophosphate dehydrogenase (GPD) mRNA during mouse adipocyte and muscle cell differentiation.This message has a size of 2.8 kilobases that includes a coding segment of 1050 bases and a large untranslated 3' end of about 1700 bases.There is a high degree of amino acid homology (91%) between the mouse adipocyte and rabbit muscle GPD proteins.GPD mRNA is not detected in myoblasts, but, as in adipogenesis, it is expressed upon differentiation into myotubes.The m ~u l a t i o n of GPD mRNA by cyclic AMP analogues and tumor necrosis factor has been examined in both adipocytes and myotubes, Dibutyryl CAMP or 8bromo-CAMP causes a large reduction of GPD mRNA levels in both cell types, with less than 20% remaining after 18 h of treatment.Tumor necrosis factor effects a dramatic and rapid reduction in GPD mRNA in fat cells and a slower but significant decrease in the level of this mRNA in muscle cells.These results indicate that GPD gene expression is linked to cell differentiation in both fat and muscle cells, and suggest certain similarities in hormonal modulation in both cell types.
Keywords
Affiliated Institutions
Related Publications
Cellular and Molecular Aspects of Adipose Tissue Development
Both in animals and humans, before or after birth, angiogenesis appears to be closely coordinated in time and space with the formation of fat cell clusters. Monobutyrin, a novel...
Glucocorticoids and Insulin Promote the Differentiation of Human Adipocyte Precursor Cells into Fat Cells
To study the in vitro differentiation of human adipocyte precursor cells and its regulation by hormones, primary cultures of stromal vascular cells of human adipose tissue were ...
Mechanism of Insulin Resistance in A-ZIP/F-1 Fatless Mice
Insulin resistance is a major factor in the pathogenesis of type 2 diabetes and may be related to alterations in fat metabolism. Fatless mice have been created using dominant-ne...
A Novel Regulatory Pathway of Brown Fat Thermogenesis
The mitochondrial uncoupling protein (UCP) is responsible for the thermogenic function of brown fat, and it is a molecular marker of the brown adipocyte cell type. Retinoic acid...
Expression of ob mRNA and its encoded protein in rodents. Impact of nutrition and obesity.
The mutant gene responsible for obesity in the ob/ob mouse was recently identified by positional cloning (Zhang Y., R. Proenca, M. Maffel, M. Barone, L. Leopold, and J.M. Friedm...
Publication Info
- Year
- 1987
- Type
- article
- Volume
- 262
- Issue
- 4
- Pages
- 1804-1809
- Citations
- 69
- Access
- Closed
External Links
Social Impact
Social media, news, blog, policy document mentions
Citation Metrics
Cite This
Identifiers
- DOI
- 10.1016/s0021-9258(19)75710-x