Cited by 190Skin and Cellular Biology ResearchProtease and Inhibitor MechanismsAutoimmune Bullous Skin Diseases

Degradation of the epidermal-dermal junction by proteolytic enzymes from human skin and human polymorphonuclear leukocytes.

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Briggaman, R A, Schechter, N M, Fraki, J, Lazarus, G S·1984·The Journal of experimental medicine

Abstract

The degradation of normal human skin by the human polymorphonuclear leukocyte proteinases cathepsin G and elastase, and by a human skin chymotrypsin-like proteinase that appears to be a mast cell constituent, was examined. Enzymes were incubated with fresh, split-thickness skin for up to 8 h; the tissue was examined ultrastructurally and immunohistochemically using antibodies to known basement membrane constituents. In all cases, the primary damage observed was at the epidermal-dermal junction. Elastase degraded the lamina densa leaving scattered and disorganized anchoring fibrils, dermal microfibril bundles, and normal-appearing collagen fibers. Immunohistochemically, type IV collagen, laminin, KF1 antigen, and EBA antigen were absent. The bullous pemphigoid antigen was present and localized on the basal cells. Epidermal-dermal separation produced by the chymotrypsin-like proteinases, cathepsin G, and the human skin proteinase, was confined to the lamina lucida. The lamina densa and sub-lamina densa fibrillar network remained intact. The human skin chymotrypsin-like proteinase produced extensive epidermal-dermal separation, while cathepsin G, at comparable concentrations, produced only focal separations. Immunohistochemically, all antigens were present after incubation with enzyme. The bullous pemphigoid antigen, however, was found on the epidermal side of the split, while laminin was found on the dermal side. These results show that the epidermal-dermal junction is highly susceptible to neutral serine proteinases located in mast cells and polymorphonuclear leukocytes. Although all the proteinases produce epidermal-dermal separation, the patterns and extent of degradation are different. The distinctive patterns of degradation may provide a clue to the involvement of these proteinases in skin diseases.

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  • Neutrophil proteases can degrade ECM and proteins important for repair.

    “For example, neutrophil proteases can degrade ECM as well as the proteins important for repair, e.g., clotting factors, complement, cytokines and immunoglobulin [66, 67]; they produce free oxygen radicals resulting in oxidative stress, which further damage tissue and delay healing [67].”

    From Transition from inflammation to proliferation: a critical step during wound healing (2016) · cites this paper as [66]

    The Discussion (p. 1040) reports that human leukocyte elastase can dissolve the epidermal–dermal junction, supporting degradation of extracellular-matrix structures. The paper does not report degradation of the listed repair-related proteins—clotting factors, complement, cytokines, or immunoglobulins. (LLM, conf=0.88)

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  • Neutrophil-derived proteases such as elastase and matrix metalloproteinases can degrade healthy extracellular matrix, and increased levels of these proteases have been repeatedly detected in chronic wounds.

    “neutrophil-derived proteases, such as elastase and matrix metalloproteinases (MMPs), can degrade healthy extracellular matrix (ECM), and increased levels of these proteases have been repeatedly detected in chronic wounds [52–56].”

    From Immunology of Wound Healing (2018) · cites this paper as [52]

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Authors
Briggaman, R. A., Schechter, N. M., Fraki, J., & Lazarus, G. S.
Venue
The Journal of experimental medicine
Published
1984-10-01
Volume
160
Issue
4
Pages
1027-1042
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2150403127
Cited by
190
References
33
Citations by year
2026: 1 · 2025: 1 · 2024: 4 · 2023: 1 · 2022: 1 · 2020: 2 · 2019: 2 · 2018: 2 · 2017: 5 · 2016: 4 · 2015: 3 · 2014: 2 · 2013: 2 · 2012: 7
FWCI
3.01
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Experimental Medicine (publishedVersion)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Funders
National Institutes of Health (5r01am032070-04, 2r01am010546-20)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Skin and Cellular Biology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Protease and Inhibitor Mechanisms
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Autoimmune Bullous Skin Diseases
Keywords
basement membrane zone, basement membrane degradation, cathepsin G, elastase, chymotrypsin-like proteinase, polymorphonuclear leukocytes, lamina densa, lamina lucida, type IV collagen, laminin, bullous pemphigoid antigen, serine protease, skin ultrastructure
MeSH terms
Animals, Cathepsins, Cattle, Chymotrypsin, Epidermis, Fluorescent Antibody Technique, Histocytochemistry, Humans, Intercellular Junctions, Neutrophils, Pancreatic Elastase, Peptide Hydrolases, Serine Endopeptidases, Skin, Trypsin, Cathepsin G

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