Involvement of urokinase-type plasminogen activator in acantholysis induced by pemphigus IgG

Shinji Morioka, Gerald Sylvan Lazarus, Pamela J. Jensen

Research output: Contribution to journalArticle

Abstract

Pemphigus IgG induces acantholysis in skin organ culture without the involvement of complement. Urokinase-type plasminogen activator, a proteolytic enzyme, has been implicated in the development of acantholysis. To test this hypothesis, we prepared a rabbit anti-urokinase antibody, which inhibited the plasminogen activator activity in normal human epidermis and in cultured keratinocytes. When added to skin organ cultures along with pemphigus IgG, anti-urokinase IgG completely prevented the development of acantholysis. Normal or preimmune rabbit IgG had no effect on pemphigus IgG-induced acantholysis. Plasminogen activator converts the zymogen plasminogen to its active form plasmin, a broad specificity serine proteinase. When high concentrations of plasminogen alone were added to skin organ culture, acantholysis of the pemphigus foliaceous type was induced. Anti-urokinase antibody also inhibited plasminogen-induced acantholysis. These results strongly support a pivotal role for plasminogen activator in the development of acantholysis.

Original languageEnglish (US)
Pages (from-to)474-477
Number of pages4
JournalJournal of Investigative Dermatology
Volume89
Issue number5
StatePublished - Nov 1987
Externally publishedYes

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Acantholysis
Pemphigus
Urokinase-Type Plasminogen Activator
Plasminogen Activators
Plasminogen
Immunoglobulin G
Skin
Organ Culture Techniques
Enzyme Precursors
Antibodies
Fibrinolysin
Serine Proteases
Anti-Idiotypic Antibodies
Peptide Hydrolases
Rabbits
Keratinocytes
Epidermis

ASJC Scopus subject areas

  • Dermatology

Cite this

Involvement of urokinase-type plasminogen activator in acantholysis induced by pemphigus IgG. / Morioka, Shinji; Lazarus, Gerald Sylvan; Jensen, Pamela J.

In: Journal of Investigative Dermatology, Vol. 89, No. 5, 11.1987, p. 474-477.

Research output: Contribution to journalArticle

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