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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Iruela-arispe, L. Battegay, E. J. Rupp, J. Sage, E. H. Pech, M. |
| Description | Author Affiliation: Battegay EJ ( Department of Research and Internal Medicine, University Hospital Basel, Switzerland.) |
| Abstract | To delineate potential angiogenic roles of platelet-derived growth factor (PDGF), we have investigated PDGF and its receptors on bovine aortic endothelial cells that exhibit spontaneous angiogenesis in vitro (angiogenic endothelial cells). Initiation of cord/tube formation by angiogenic endothelial cells required bovine or human serum. Neutralization of PDGF-BB in human serum with a monoclonal anti-PDGF-BB antibody reduced cord/tube formation by 37 +/- 10%, whereas neutralizing anti-PDGF-AA and an IgG isotype-matched control antibody had no effect. DNA synthesis in response to PDGF-BB increased as the cords and tubes developed; furthermore, PDGF-BB induced the incorporation of BrdU in the nuclei of cells associated with these structures. PDGF beta-receptor (PDGF-beta) mRNA increased concomitantly with cord/tube formation, and PDGFR-beta were specifically localized by immunocytochemistry to developing and mature cords and tubes. However, PDGFR-beta transcripts and protein were undetectable in nonangiogenic endothelial cells, and PDGF alpha-receptor mRNA was not expressed in either endothelial cell strain. In contrast to nonangiogenic endothelial cells, angiogenic endothelial cells did not express the PDGF B-chain, the required ligand for the PDGFR-beta. We conclude that (a) PDGF-BB can contribute to angiogenesis in vitro, (b) PDGFR-beta are specific for cord/tube-forming endothelial cells and mediate endothelial proliferation and cord/tube formation, and (c) in angiogenic and nonangiogenic endothelial cells, the expression of PDGFR- beta and PDGF B-chain is inversely correlated. We therefore suggest that paracrine PDGF might amplify angiogenesis via direct action on endothelially expressed PDGFR-beta. |
| ISSN | 00219525 |
| e-ISSN | 15408140 |
| Journal | The Journal of Cell Biology |
| Issue Number | 4 |
| Volume Number | 125 |
| Language | English |
| Publisher | Rockefeller University Press (United States) |
| Publisher Date | 1994-05-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Endothelium, Vascular Cytology Neovascularization, Pathologic Metabolism Platelet-Derived Growth Factor Receptors, Platelet-Derived Growth Factor Animals Cell Division Cells, Cultured Culture Media Culture Media, Serum-Free DNA Biosynthesis Etiology Phenotype Proto-Oncogene Proteins C-sis Recombinant Proteins Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Cell Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Medicine |
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