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Expression of the urokinase receptor in vascular endothelial cells is stimulated by basic fibroblast growth factor.
| Content Provider | Scilit |
|---|---|
| Author | Mignatti, Paolo Mazzieri, Roberta Rifkin, D. B. |
| Copyright Year | 1991 |
| Description | Journal: Journal of Cell Biology Basic fibroblast growth factor, a potent angiogenesis inducer, stimulates urokinase (uPA) production by vascular endothelial cells. In both basic fibroblast growth factor-stimulated and -nonstimulated bovine capillary endothelial and human umbilical vein endothelial cells single-chain uPA binding is mediated by a membrane protein with a Mr of 42,000. Exposure of bovine capillary or endothelial human umbilical vein endothelial cells to pmolar concentrations of basic fibroblast growth factor results in a dose-dependent, protein synthesis-dependent increase in the number of membrane receptors for uPA (19,500-187,000) and in a parallel decrease in their affinity (KD = 0.144-0.790 nM). With both cells, single-chain uPA binding is competed by synthetic peptides whose sequence corresponds to the receptor-binding sequence in the NH2-terminal domain of uPA. Exposure of bovine capillary endothelial cells to transforming growth factor beta 1, which inhibits uPA production and upregulates type 1 plasminogen activator inhibitor, the major endothelial cell plasminogen activator inhibitor, has no effect on uPA receptor levels. These results show that basic fibroblast growth factor, besides stimulating uPA production by vascular endothelial cells, also increases the production of receptors, which modulates their capacity to focalize this enzyme on the cell surface. This effect may be important in the degradative processes that occur during angiogenesis. |
| Related Links | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2289004/pdf http://jcb.rupress.org/content/113/5/1193.full.pdf |
| ISSN | 00221295 |
| DOI | 10.1083/jcb.113.5.1193 |
| Journal | Journal of Cell Biology |
| Issue Number | 5 |
| Volume Number | 113 |
| Language | English |
| Publisher | Rockefeller University Press |
| Publisher Date | 1991-06-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Cell Biology Endothelial Cells Fibroblast Growth Factor Basic Fibroblast Growth Production By Vascular |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology |
