Cited by 68Wound Healing and TreatmentsLiver physiology and pathologyProtease and Inhibitor Mechanisms

Alternative Proteolytic Processing of Hepatocyte Growth Factor during Wound Repair

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Buchstein, Nils, Hoffmann, Daniel, Smola, Hans, Lang, Sabina, Paulsson, Mats, Niemann, Catherin, Krieg, Thomas, Eming, Sabine A.·2009·The American Journal of Pathology

Abstract

Wound healing is a crucial regenerative process in all organisms. We examined expression, integrity, and function of the proteins in the hepatocyte growth factor (HGF)/c-Met signaling pathway in normally healing and non-healing human skin wounds. Whereas in normally healing wounds phosphorylation of c-Met was most prominent in keratinocytes and dermal cells, in non-healing wounds phosphorylation of c-Met was barely detectable, suggesting reduced c-Met activation. In wound exudates obtained from non-healing, but not from healing wounds, HGF protein was a target of substantial proteolytic processing that was different from the classical activation by known serine proteases. Western blot analysis and protease inhibitor studies revealed that HGF is a target of neutrophil elastase and plasma kallikrein during skin repair. Proteolytic processing of HGF by each of these proteases significantly attenuated keratinocyte proliferation, wound closure capacity in vitro, and c-Met signal transduction. Our findings reveal a novel pathway of HGF processing during skin repair. Conditions in which proteases are imbalanced and tend toward increased proteolytic activity, as in chronic non-healing wounds, might therefore compromise HGF activity due to the inactivation of the HGF protein and/or the generation of HGF fragments that ultimately mediate a dominant negative effect and limit c-Met activation.

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Crossref · 10.2353/ajpath.2009.080597

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  • In chronic wounds, there is a marked increase in serine proteases that degrade matrix components including fibronectin and key growth factors required for extracellular matrix remodeling and cell growth.

    “Last, in chronic wounds, there is a marked increase in serine proteases that degrades matrix components, including fibronectin, as well as various key growth factors, all of which are required for remodeling of the ECM and cell growth (38-41).”

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Research works printed but not linked: 1

  1. Nusrat A, Parkos CA, Bacarra AE, Godowski PJ, Delp-Archer C, Rosen EM, Madara JL: Hepatocyte growth factor/scatter factor ef- Processing of HGF in Tissue Repair 2127 AJP June 2009, Vol. 174, No. 6

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Authors
Buchstein, N., Hoffmann, D., Smola, H., Lang, S., Paulsson, M., Niemann, C., Krieg, T., & Eming, S. A.
Affiliations
University of Cologne (DE)
Corresponding author
Eming, Sabine A.
Venue
The American Journal of Pathology
Publisher
Elsevier BV
Published
2009-06
Volume
174
Issue
6
Pages
2116-2128
ISSN
0002-9440 (ISSN-L)
OpenAlex
W1993493788
Cited by
68
References
46
Citations by year
2026: 4 · 2025: 3 · 2024: 2 · 2023: 1 · 2022: 6 · 2020: 1 · 2019: 3 · 2018: 7 · 2017: 4 · 2016: 1 · 2015: 5 · 2014: 5 · 2013: 8 · 2012: 4
FWCI
6.11
Type
journal article
Language
en
Open access
Locations
  • American Journal Of Pathology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Deutsche Forschungsgemeinschaft (SFB829, LSHB-CT-2005-512102)
  • Universität zu Köln
Topics
  • Health Sciences › Medicine › Rehabilitation › Wound Healing and Treatments
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Protease and Inhibitor Mechanisms
Keywords
hepatocyte growth factor, C-MET signaling, wound healing, proteolytic processing, neutrophil elastase, plasma kallikrein, chronic non-healing wounds, keratinocyte proliferation, wound closure, serine protease, dominant negative effect
MeSH terms
Aged, Electrophoresis, Polyacrylamide Gel, Enzyme-Linked Immunosorbent Assay, Exudates and Transudates, Humans, Immunohistochemistry, Phosphorylation, Serine Endopeptidases, Skin, Wound Healing, Blotting, Western, Signal Transduction, Keratinocytes, Hepatocyte Growth Factor, Proto-Oncogene Proteins c-met

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