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Angiogenesis mediated by soluble forms of E-selectin and vascular cell adhesion molecule-1.
Endothelial adhesion molecules facilitate the entry of leukocytes into inflamed tissues. This in turn promotes neovascularization, a process central to the progression of rheumatoid arthritis, tumor growth and wound repair. Here we test the hypothesis that soluble endothelial adhesion molecules promote angiogenesis. Human recombinant soluble E-selectin and soluble vascular cell adhesion molecule-1 induced chemotaxis of human endothelial cells in vitro and were angiogenic in rat cornea. Soluble E-selectin acted on endothelial cells in part through a sialyl Lewis-X-dependent mechanism, while soluble vascular cell adhesion molecule-1 acted on endothelial cells in part through a very late antigen (VLA)-4 dependent mechanism. The chemotactic activity of rheumatoid synovial fluid for endothelial cells, and also its angiogenic activity, were blocked by antibodies to either soluble E-selectin or soluble vascular cell adhesion molecule-1. These results suggest a novel function for soluble endothelial adhesion molecules as mediators of angiogenesis.[1]References
- Angiogenesis mediated by soluble forms of E-selectin and vascular cell adhesion molecule-1. Koch, A.E., Halloran, M.M., Haskell, C.J., Shah, M.R., Polverini, P.J. Nature (1995) [Pubmed]
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