Article (Scientific journals)
Spontaneous atopic dermatitis due to immune dysregulation in mice lacking Adamts2 and 14.
Dupont, Laura; Ehx, Gregory; Chantry, Mathilde et al.
2018In Matrix Biology, 70, p. 140-157
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Keywords :
ADAMTS; Collagen; Immunity; Dermatitis; Skin
Abstract :
[en] Since its first description, ADAMTS14 has been considered as an aminoprocollagen peptidase based on its high similarity with ADAMTS3 and ADAMTS2. As its importance for procollagen processing was never experimentally demonstrated in vivo, we generated Adamts14-deficient mice. They are healthy, fertile and display normal aminoprocollagen processing. They were further crossed with Adamts2-deficient mice to evaluate potential functional redundancies between these two highly related enzymes. Initial characterizations made on young Adamts2-Adamts14-deficient animals showed the same phenotype as that of Adamts2-deficient mice, with no further reduction of procollagen processing and no significant aggravation of the structural alterations of collagen fibrils. However, when evaluated at older age, Adamts2-Adamts14-deficient mice surprisingly displayed epidermal lesions, appearing in 2 month-old males and later in some females, and then worsening rapidly. Immunohistological evaluations of skin sections around the lesions revealed thickening of the epidermis, hypercellularity in the dermis and extensive infiltration by immune cells. Additional investigations, performed on young mice before the formation of the initial lesions, revealed that the primary cause of the phenotype was not related to alterations of the epidermal barrier but was rather the result of an abnormal activation and differentiation of T lymphocytes towards a Th1 profile. However, the primary molecular defect probably does not reside in the immune system itself since irradiated Adamts2-Adamts14-deficient mice grafted with WT immune cells still developed lesions. While originally created to better characterize the common and specific functions of ADAMTS2 and ADAMTS14 in extracellular matrix and connective tissues homeostasis, the Adamts2-Adamts14-deficient mice revealed an unexpected but significant role of ADAMTS in the regulation of immune system, possibly through a cross-talk involving mesenchymal cells and the TGFβ pathways.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Dupont, Laura ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Laboratoire de Biologie des tissus conjonctifs
Ehx, Gregory  
Chantry, Mathilde
Monseur, Christine ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Laboratoire des tissus conjonctifs
Leduc, Cédric 
Janssen, Lauriane
Cataldo, Didier  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Thiry, Marc  ;  Université de Liège - ULiège > Département des sciences de la vie > Biologie cellulaire
Jérôme, Christine  ;  Université de Liège - ULiège > Département de chimie (sciences) > Centre d'études et de rech. sur les macromolécules (CERM)
Thomassin, Jean-Michel ;  Université de Liège - ULiège > Département de chimie (sciences) > Centre d'études et de rech. sur les macromolécules (CERM)
Nusgens, Betty ;  Laboratoire de Biologie des Tissus Conjonctifs
Dubail, Johanne
Baron, Frédéric  ;  Université de Liège - ULiège > Hematology
Colige, Alain ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Laboratoire des tissus conjonctifs
More authors (4 more) Less
Language :
English
Title :
Spontaneous atopic dermatitis due to immune dysregulation in mice lacking Adamts2 and 14.
Publication date :
2018
Journal title :
Matrix Biology
ISSN :
0945-053X
eISSN :
1569-1802
Publisher :
Elsevier, Netherlands
Volume :
70
Pages :
140-157
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 15 January 2019

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