1. Desmoglein 1 in ovine muzzle skin detected by immunohistochemistryand immunoblotting
- Author
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Miragliotta, Vincenzo, Donadio, Elena, Coli, Alessandra, Stornelli, Maria Rita, Giannessi, Elisabetta, Ricciardi, Maria Paola, Miragliotta, Vincenzo, Donadio, Elena, Coli, Alessandra, Stornelli, Maria Rita, Giannessi, Elisabetta, and Ricciardi, Maria Paola
- Abstract
SUMMARY Desmosomes are epithelial adhesion structures that assure the mechanical cell-cell adhesion, by linking the intermediate filaments of two adjacent cells. Several proteins have been characterised as component of these structures and, among them, desmogleins are known to be the autoantigens in some autoimmune diseases that go by the name of pemphigus complex diseases. In particular Desmoglein 1 is the targeted antigen in Pemphigus foliaceus. This study aims at revealing the presence of Desmoglein 1 in the ovine muzzle skin using a commercial monoclonal antibody, raised against human desmoglein-1, on samples obtained from sheep muzzle. Immunohistochemical analyses (streptavidin-peroxidase method) and immunoblotting analyses (chemiluminescence method) have been performed. Immunohistochemical evaluation allowed for detection of a pericellular staining of keratinocyte cell membranes in the spinous and the basal layers of epidermis. A positive immunoreaction was obtained when the anti-Dsg-1 antibody was reacted with human cheek epidermis used as positive control. Specificity of the immune reaction was confirmed by the lack of staining in samples incubated with the anti-vimentin antibody used as negative control. Densitometric analyses of the chemiluminescence film showed three bands. One of them could be referred to Desmoglein 1, the second one to Desmoglein 3 and the last one to a Desmoglein-Plakoglobin complex. RIASSUNTO I desmosomi sono strutture di adesione tipiche dei tessuti epiteliali che connettono i filamenti intermedi del citoscheletro di due cellule adiacenti, assicurando la loro adesione meccanica. Tra le proteine che compongono queste strutture, le desmogleine sono note come antigene target in alcune malattie autoimmuni riunite sotto il nome di malattie del complesso del pemfigo. La desmogleina 1, in particolare, si comporta da auto antigene nel pemfigo foliaceo. Lo scopo della presente ricerca è stato quello di mettere in evidenza questa proteina su c
- Published
- 2005