alexa Inhibition of endothelial cell proliferation by gamma-interferon.
Immunology

Immunology

Journal of Clinical & Cellular Immunology

Author(s): Friesel R, Komoriya A, Maciag T

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Abstract Endothelial cell growth factor (ECGF) is a potent polypeptide mitogen for endothelial cells and fibroblasts. The mitogenic effects of ECGF are inhibited by the lymphokine gamma-interferon (gamma-IFN) in a dose-dependent manner. Gamma-IFN also induces a unique change in endothelial cell morphology which is maximally expressed in the presence of ECGF. The antiproliferative and phenotypic modulatory effects of gamma-IFN on endothelial cells are reversible. Inhibition of ECGF-induced endothelial cell proliferation by gamma-IFN is accompanied by a concentration- and time-dependent decrease in binding of 125I-ECGF to the endothelial cell surface. Scatchard analyses of the binding data in the presence and absence of gamma-IFN demonstrate a decrease in the number of ECGF-binding sites rather than a decrease in ligand affinity for the receptor. Cross-linking experiments with disuccinimidyl suberate demonstrate a decrease in the 170,000 Mr cross-linked receptor-ligand complex. These data suggest that gamma-IFN inhibits endothelial cell proliferation by a mechanism which involves growth factor receptor modulation.
This article was published in J Cell Biol and referenced in Journal of Clinical & Cellular Immunology

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