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. 1986 Oct;83(19):7311–7315. doi: 10.1073/pnas.83.19.7311

Production of platelet-derived growth factor-like molecules by cultured arterial smooth muscle cells accompanies proliferation after arterial injury.

L N Walker, D F Bowen-Pope, R Ross, M A Reidy
PMCID: PMC386706  PMID: 3020543

Abstract

The migration and proliferation of smooth muscle cells (SMCs) within the intima of arteries following mechanical injury is thought to be initiated by vessel wall injury and release of growth factors, in particular the platelet-derived growth factor (PDGF). However, the mechanism by which SMC proliferation is regulated after platelet interaction with the vessel wall has ceased is unknown. Here we show that SMCs derived from the intima of injured rat arteries (intimal SMCs) are phenotypically distinct from SMCs from unmanipulated vessels (medial SMCs). Intimal SMCs secrete 5-fold greater amounts of PDGF-like activity into conditioned medium in culture, have fewer receptors for 125I-labeled PDGF, and are not mitogenically stimulated by exogenous purified PDGF. This study demonstrates that two SMC phenotypes can develop in the adult rat artery and suggests that SMC proliferation in vivo may be controlled, in part, by SMCs that produce PDGF-like molecules.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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