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Publication : A spontaneous deletion within the desmoglein 3 extracellular domain of mice results in hypomorphic protein expression, immunodeficiency, and a wasting disease phenotype.

First Author  Kountikov EI Year  2015
Journal  Am J Pathol Volume  185
Issue  3 Pages  617-30
PubMed ID  25542773 Mgi Jnum  J:219200
Mgi Id  MGI:5619876 Doi  10.1016/j.ajpath.2014.10.025
Citation  Kountikov EI, et al. (2015) A Spontaneous Deletion within the Desmoglein 3 Extracellular Domain of Mice Results in Hypomorphic Protein Expression, Immunodeficiency, and a Wasting Disease Phenotype. Am J Pathol 185(3):617-30
abstractText  Desmoglein 3 is a transmembrane component of desmosome complexes that mediate epidermal cell-to-cell adhesion and tissue integrity. Antibody blockade of desmoglein 3 function in pemphigus vulgaris patients leads to skin blistering (acantholysis) and oral mucosa lesions. Desmoglein 3 deficiency in mice leads to a phenotype characterized by cyclic alopecia in addition to the dramatic skin and mucocutaneous acantholysis observed in pemphigus patients. In this study, mice that developed an overt squeaky (sqk) phenotype were identified with obstructed airways, cyclic hair loss, and severe immunodeficiency subsequent to the development of oral lesions and malnutrition. Single-nucleotide polymorphism-based quantitative trait loci mapping revealed a genetic deletion that resulted in expression of a hypomorphic desmoglein 3 protein with a truncation of an extracellular cadherin domain. Because hypomorphic expression of a truncated desmoglein 3 protein led to a spectrum of severe pathology not observed in mice deficient in desmoglein 3, similar human genetic alterations may also disrupt desmosome function and induce a disease course distinct from pathogenesis of pemphigus vulgaris.
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