Neurotrophic effect of hepatocyte growth factor on central nervous system neurons in vitro

M. Hamanoue, N. Takemoto, K. Matsumoto, T. Nakamura, K. Nakajima, S. Kohsaka

研究成果: Article査読

164 被引用数 (Scopus)

抄録

Although the expression of hepatocyte growth factor (HGF) and its receptor, proto-oncogene c-met, has been demonstrated in the central nervous system (CNS), the function of HGF in the CNS was not fully understood. In the present studies, we determined the effects of HGF on neuronal development in neocortical explant and mesencephalic neurons obtained from embryonic rat brain. HGF clearly enhanced neurite outgrowth in neocortical explants. In the mesencephalic culture, the number of tyrosine hydroxylase (TH)-positive neurons was significantly higher in the HGF-treated wells and the neurites of the TH-positive neurons appear to be more developed. Moreover, the dopamine uptake into mesencephalic neurons was also enhanced by HGF treatment, indicating that HGF promotes the survival and/or maturation of mesencephalic dopaminergic neurons. In both neocortical explants and mesencephalic neurons, c-met autophosphorylation was induced by HGF and MAP kinase activation was also detected in the neocortical explant. Furthermore, Western blot analysis of the cultured CNS cells revealed that HGF was expressed mainly in microglia. These results suggest that HGF from microglia has neurotrophic activity on the CNS neurons and plays significant roles in the development of the CNS.

本文言語English
ページ(範囲)554-564
ページ数11
ジャーナルJournal of neuroscience research
43
5
DOI
出版ステータスPublished - 1996
外部発表はい

ASJC Scopus subject areas

  • 細胞および分子神経科学

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