Hepatocyte growth factor is a mitogen for olfactory ensheathing cells.

Abstract:

:Hepatocyte growth factor (HGF) is a potent mitogen for mature hepatocytes, and it has multi-functional effects in a variety of cells in various organs. HGF stimulates DNA synthesis and promotes cell migration and morphogenesis in several cell types including the olfactory system. To characterize the potential mitogenic activity of HGF that might contribute to olfactory ensheathing cell (OEC) proliferation, we tested the ability of HGF to stimulate OEC division in vitro. OECs were obtained from adult rat olfactory bulbs and cultured in serum-free medium, and were identified by double immunostaining for p75 and S-100 antibodies. DNA synthesis assayed by pulsing BrdU for 24 hr showed that HGF at the concentration of 5-100 ng/ml elicited a 5-10-fold increase of OEC proliferation. By immunocytochemical analysis, we demonstrated that c-Met-immunoreactivity was present in cultured OECs, and c-Met anti-serum significantly sequestered the activity of HGF on OECs proliferation, suggesting that HGF-induced proliferation of OECs is mediated by the c-Met receptor. The mitogenic activity of HGF was potentiated by addition of heregulin (HRG), but inhibited by addition of forskolin. These results demonstrate that HGF is a novel mitogen for rat OECs in vitro, and HGF/c-Met system is involved in regulating OECs growth and development.

journal_name

J Neurosci Res

authors

Yan H,Nie X,Kocsis JD

doi

10.1002/jnr.10009

keywords:

subject

Has Abstract

pub_date

2001-11-15 00:00:00

pages

698-704

issue

4

eissn

0360-4012

issn

1097-4547

pii

10.1002/jnr.10009

journal_volume

66

pub_type

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