Human platelet-derived growth factor preparations contain a separate activity which potentiates follicle-stimulating hormone-mediated induction of luteinizing hormone receptor in cultured rat granulosa cells: evidence for transforming growth factor-beta.

Published

Journal Article

The ability of platelet-derived growth factor (PDGF) preparations to potentiate FSH-mediated LH receptor induction in rat granulosa cell cultures was shown to be due to a component distinct from PDGF. Purification of heat-treated platelet lysate by carboxymethyl-Sephadex C-50 and Cibacron blue-Sepharose chromatography, followed by Bio-Gel P-60 chromatography, resulted in the separation of two activities: 1) a growth-promoting activity, P60-PDGF, defined on the basis of increased DNA synthesis in BALB/c-3T3 cells, and 2) a differentiation-promoting activity which enhanced FSH-dependent LH receptor induction in granulosa cells. On the basis of electrophoretic mobility on sodium dodecyl sulfate-polyacrylamide gels, inhibition of tritiated thymidine uptake by epithelial cells, and attenuation of LH/hCG receptor expression in the presence of antitransforming growth factor-beta (anti-TGF beta) immunoglobulin G, the differentiation-promoting component of the preparations appears to be TGF beta. The Bio-Gel fractions that contained TGF beta did not stimulate LH receptor induction of cAMP production in the absence of FSH. PDGF prepared free of TGF beta did not potentiate receptor induction. We conclude, therefore, that the differentiative effects of PDGF previously described in this system are due to TGF beta.

Full Text

Duke Authors

Cited Authors

  • Blair, EI; Kim, IC; Estes, JE; Keski-Oja, J; Schomberg, DW

Published Date

  • October 1, 1988

Published In

Volume / Issue

  • 123 / 4

Start / End Page

  • 2003 - 2008

PubMed ID

  • 3138105

Pubmed Central ID

  • 3138105

International Standard Serial Number (ISSN)

  • 0013-7227

Digital Object Identifier (DOI)

  • 10.1210/endo-123-4-2003

Language

  • eng

Conference Location

  • United States