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Cell Growth & Differentiation, Vol 3, Issue 11 783-790, Copyright © 1992 by American Association of Cancer Research


ARTICLES

Platelet-derived growth factor potentiates phorbol ester-induced neuronal differentiation of human neuroblastoma cells

S Pahlman, I Johansson, B Westermark and M Nister
Department of Pathology, University of Uppsala, University Hospital, Sweden.

Previous studies have shown that platelet-derived growth factor (PDGF) and PDGF receptors are expressed in the mammalian central nervous system and that primary cultured neuroblasts from rat hindbrain have functional PDGF beta-receptors. Here, it is shown that cultured human neuroblastoma cells express PDGF alpha- and beta-receptors, but not PDGF-A and PDGF-B chain mRNA. In contrast to alpha-receptor expression, beta-receptor expression appears to be associated with a mature neuronal phenotype. Under serum-free growth conditions, PDGF-AA and -BB induce a trophic and weak mitogenic response in SH-SY5Y neuroblastoma cells, showing that the PDGF receptors in these cells are functional. In combination with 12-O-tetradecanoylphorbol-13-acetate, all three PDGF isoforms induce sympathetic neuronal differentiation of the SH-SY5Y cells, as shown by morphology and by increased expression of the genes coding for growth-associated protein 43 and neuropeptide tyrosine, respectively. This indicates a potential role for PDGF in the development of sympathetic neurons in particular and of the nervous system in general.


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HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Cancer Research Clinical Cancer Research
Cancer Epidemiology Biomarkers & Prevention Molecular Cancer Therapeutics
Molecular Cancer Research Cell Growth & Differentiation
Copyright © 1992 by the American Association of Cancer Research.