Atopic dermatitis-like disease and associated lethal myeloproliferative disorder arise from loss of Notch signaling in the murine skin.

Détails

Ressource 1Télécharger: BIB_BF783DDCBA05.P001.pdf (4267.89 [Ko])
Etat: Public
Version: de l'auteur
ID Serval
serval:BIB_BF783DDCBA05
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Atopic dermatitis-like disease and associated lethal myeloproliferative disorder arise from loss of Notch signaling in the murine skin.
Périodique
PLoS One
Auteur(s)
Dumortier A., Durham A.D., Di Piazza M., Vauclair S., Koch U., Ferrand G., Ferrero I., Demehri S., Song L.L., Farr A.G., Leonard W.J., Kopan R., Miele L., Hohl D., Finke D., Radtke F.
ISSN
1932-6203[electronic], 1932-6203[linking]
Statut éditorial
Publié
Date de publication
2010
Volume
5
Numéro
2
Pages
e9258
Langue
anglais
Résumé
BACKGROUND: The Notch pathway is essential for proper epidermal differentiation during embryonic skin development. Moreover, skin specific loss of Notch signaling in the embryo results in skin barrier defects accompanied by a B-lymphoproliferative disease. However, much less is known about the consequences of loss of Notch signaling after birth. METHODOLOGY AND PRINCIPAL FINDINGS: To study the function of Notch signaling in the skin of adult mice, we made use of a series of conditional gene targeted mice that allow inactivation of several components of the Notch signaling pathway specifically in the skin. We demonstrate that skin-specific inactivation of Notch1 and Notch2 simultaneously, or RBP-J, induces the development of a severe form of atopic dermatitis (AD), characterized by acanthosis, spongiosis and hyperkeratosis, as well as a massive dermal infiltration of eosinophils and mast cells. Likewise, patients suffering from AD, but not psoriasis or lichen planus, have a marked reduction of Notch receptor expression in the skin. Loss of Notch in keratinocytes induces the production of thymic stromal lymphopoietin (TSLP), a cytokine deeply implicated in the pathogenesis of AD. The AD-like associated inflammation is accompanied by a myeloproliferative disorder (MPD) characterized by an increase in immature myeloid populations in the bone marrow and spleen. Transplantation studies revealed that the MPD is cell non-autonomous and caused by dramatic microenvironmental alterations. Genetic studies demontrated that G-CSF mediates the MPD as well as changes in the bone marrow microenvironment leading to osteopenia. SIGNIFICANCE: Our data demonstrate a critical role for Notch in repressing TSLP production in keratinocytes, thereby maintaining integrity of the skin and the hematopoietic system.
Mots-clé
Animals, Cytokines/metabolism, Dermatitis, Atopic/genetics, Dermatitis, Atopic/mortality, Flow Cytometry, Granulocyte Colony-Stimulating Factor/genetics, Granulocyte Colony-Stimulating Factor/metabolism, Humans, Mice, Mice, Inbred C57BL, Mice, Knockout, Mice, Nude, Mice, Transgenic, Models, Biological, Myeloproliferative Disorders/genetics, Myeloproliferative Disorders/mortality, Receptor, Notch1/genetics, Receptor, Notch1/physiology, Receptor, Notch2/genetics, Receptor, Notch2/physiology, Receptors, Cytokine/genetics, Receptors, Cytokine/metabolism, Receptors, Notch/genetics, Receptors, Notch/physiology, Reverse Transcriptase Polymerase Chain Reaction, Signal Transduction/genetics, Signal Transduction/physiology, Skin/metabolism, Skin/pathology, Survival Analysis, Survival Rate
Pubmed
Web of science
Open Access
Oui
Création de la notice
09/03/2010 11:50
Dernière modification de la notice
20/08/2019 15:33
Données d'usage