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Motogenic effect of recombinant HGF on airway epithelial cells during the in vitro wound repair of the respiratory epithelium
Author(s) -
Zahm JeanMarie,
Debordeaux Céline,
Raby Béatrice,
Klossek JeanMichel,
Bonnet Noël,
Puchelle Edith
Publication year - 2000
Publication title -
journal of cellular physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.529
H-Index - 174
eISSN - 1097-4652
pISSN - 0021-9541
DOI - 10.1002/1097-4652(200012)185:3<447::aid-jcp16>3.0.co;2-d
Subject(s) - epithelium , respiratory epithelium , in vitro , recombinant dna , respiratory system , microbiology and biotechnology , airway , wound healing , biology , respiratory mucosa , chemistry , immunology , medicine , anatomy , biochemistry , surgery , gene , genetics
Cell migration is the earliest mechanism involved in the wound repair process of the respiratory epithelium and could be potentially enhanced by growth factors. In the present work, we investigated the localisation of the hepatocyte growth factor (HGF) receptor (c‐Met) during wound repair and evaluated the effect of recombinant HGF (rHGF) on cell migration by using an in vitro model of airway epithelial wound repair. By using immunohistochemical methods, we observed that the immunoreactivity of the c‐Met proto‐oncogene was increased in epithelial cells engaged in the process of tissue repair. The incubation of wounded cultures with increasing concentrations of rHGF (0.2, 2, 20, and 200 ng/ml) induced a significant (P < 0.02) dose‐dependent effect on the wound repair index, with a maximum effect produced at 20 ng/ml (+31.3%). The cell migration speed reached 50.2 μm/h at this concentration, compared to 20.4 μm/h in the absence of rHGF. No significant effect on cell proliferation was observed in the repairing area in the presence of rHGF. These results suggest that rHGF is able to improve the wound repair process of the airway epithelium by increasing cell migration. J. Cell. Physiol. 185:447–453, 2000. © 2000 Wiley‐Liss, Inc.