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. 1989 Oct;86(19):7311–7315. doi: 10.1073/pnas.86.19.7311

Isolation and characterization of a vascular endothelial cell mitogen produced by pituitary-derived folliculo stellate cells.

D Gospodarowicz 1, J A Abraham 1, J Schilling 1
PMCID: PMC298051  PMID: 2798412

Abstract

A growth factor with specificity for vascular endothelial cells has been identified in conditioned medium of pituitary-derived folliculo stellate cells. This factor, named folliculo stellate-derived growth factor (FSdGF), was purified to homogeneity by a combination of heparin-Sepharose affinity chromatography, Bio-Gel P-60 exclusion chromatography, Mono S ion-exchange chromatography, and hydrophobic chromatography on a C4 reverse-phase HPLC column. FSdGF was characterized as a homodimer composed of two subunits with a molecular mass of 23 kDa. FSdGF was a potent mitogen for vascular endothelial cells with activity detectable at 25 pg/ml and saturation at 500 pg/ml. It did not stimulate the proliferation of other cell types such as bovine vascular smooth muscle cells, corneal endothelial cells, adrenal cortex cells, granulosa cells, BALB/MK cells, or BHK-21 cells. Microsequencing revealed an N-terminal sequence having no significant homology to any known protein. The release of FSdGF by pituitary cells and its target cell specificity raise the possibility that FSdGF may play a role in angiogenesis.

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Selected References

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