Synthesis and secretion of vascular permeability factor/vascular endothelial growth factor by human retinal pigment epithelial cells
- PMID: 8512562
- DOI: 10.1006/bbrc.1993.1671
Synthesis and secretion of vascular permeability factor/vascular endothelial growth factor by human retinal pigment epithelial cells
Abstract
The presence of the secreted angiogenic molecule, vascular permeability factor/vascular endothelial growth factor, was investigated in human retinal pigment epithelial cells. Northern and in situ hybridization analysis of cultured cells identified vascular permeability factor/vascular endothelial growth factor mRNA. Western analysis of cell lysates identified a 42 kD protein that comigrated with human recombinant vascular permeability factor/vascular endothelial growth factor. Immunoassay measurements detected vascular permeability factor/vascular endothelial growth factor protein in cell lysates and conditioned media in vitro and in cell lysates isolated directly from post-mortem eyes. These data demonstrate that human retinal pigment epithelial cells can synthesize the secreted angiogenic peptide vascular permeability factor/vascular endothelial growth factor in vitro and in situ. The production and secretion of this factor by human retinal pigment epithelial cells may be important in the pathogenesis of ocular neovascularization.
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