Loss of corneodesmosin leads to severe skin barrier defect, pruritus, and atopy: unraveling the peeling skin disease.
Generalized peeling skin disease is an autosomal-recessive ichthyosiform erythroderma characterized by lifelong patchy peeling of the skin. After genome-wide linkage analysis, we have identified a homozygous nonsense mutation in CDSN in a large consanguineous family with generalized peeling skin, pruritus, and food allergies, which leads to a complete loss of corneodesmosin. In contrast to hypotrichosis simplex, which can be associated with specific dominant CDSN mutations, peeling skin disease is characterized by a complete loss of CDSN expression. The skin phenotype is consistent with a recent murine Cdsn knockout model. Using three-dimensional human skin models, we demonstrate that lack of corneodesmosin causes an epidermal barrier defect supposed to account for the predisposition to atopic diseases, and we confirm the role of corneodesmosin as a decisive epidermal adhesion molecule. Therefore, peeling skin disease will represent a new model disorder for atopic diseases, similarly to Netherton syndrome and ichthyosis vulgaris in the recent past.
Oji
Vinzenz
V
Department of Dermatology, University Hospital Münster, 48149 Münster, Germany.
Eckl
Katja-Martina
KM
Aufenvenne
Karin
K
Nätebus
Marc
M
Tarinski
Tatjana
T
Ackermann
Katharina
K
Seller
Natalia
N
Metze
Dieter
D
Nürnberg
Gudrun
G
Fölster-Holst
Regina
R
Schäfer-Korting
Monika
M
Hausser
Ingrid
I
Traupe
Heiko
H
Hennies
Hans Christian
HC
D001483:Base Sequence; D002648:Child; D002874:Chromosome Mapping; D004252:DNA Mutational Analysis; D004817:Epidermis / Q000473:pathology; D005190:Family; D006023:Glycoproteins / Q000172:deficiency* / Q000235:genetics*; D006801:Humans; D036341:Intercellular Signaling Peptides and Proteins; D008297:Male; D008954:Models, Biological; D008969:Molecular Sequence Data; D010375:Pedigree; D011537:Pruritus / Q000150:complications* / Q000235:genetics*; D012867:Skin / Q000473:pathology / Q000648:ultrastructure
C109656:CDSN protein, human; D006023:Glycoproteins; D036341:Intercellular Signaling Peptides and Proteins