Article (Scientific journals)
Development of recombinant stable house dust mite allergen Der p 3 molecules for component-resolved diagnosis and specific immunotherapy.
Bouaziz, Ahlem; Walgraffe, David; Bouillot, Celine et al.
2015In Clinical and Experimental Allergy, 45
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Keywords :
Der p 3; diagnosis; hypoallergen; inactive enzyme; recombinant mite allergen; specific immunotherapy
Abstract :
[en] BACKGROUND: The allergen Der p 3 is underrepresented in house dust mite (HDM) extracts probably due to autolysis. Recombinant stable molecule of the allergen is thus needed to improve the diagnosis of allergy and the safety and efficacy of immunotherapy. OBJECTIVE: The current study reports the immunological characterization of two recombinant molecules of the HDM allergen Der p 3 as useful tools for diagnosis and immunotherapy. METHODS: Recombinant mature (rDer p 3) and immature (proDer p 3) Der p 3 and their corresponding S196A mutants were produced in Pichia pastoris and purified. The stability, IgE-binding capacity and allergenicity of the different proteins were analyzed and compared with those of the major mite allergen Der p 1 used as a reference. Additionally, the immunogenicity of the different allergens was evaluated in a murine model of Der p 3 sensitization. RESULTS: Compared to the IgE reactivity to recombinant and natural Der p 3 (nDer p 3), the mean IgE binding of patient's sera to rDer p 3-S196A (50 %) was higher. The poorly binding to nDer p 3 or rDer p 3 was due to autolysis of the allergen. Contrary to Der p 3, proDer p 3 displayed very weak IgE reactivity, as measured by sandwich ELISA and competitive inhibition, RBL degranulation and human basophil activation assays. Moreover, proDer p 3 induced a TH 1-biased immune response that prevented an allergic response in mice but retained Der p 3-specific T cell reactivity. CONCLUSION: rDer p 3-S196A should be used for the diagnosis of HDM allergy elicited by Der p 3, and proDer p 3 may represent a hypoallergen of Der p 3. This article is protected by copyright. All rights reserved.
Research center :
CIP - Centre d'Ingénierie des Protéines - ULiège
Disciplines :
Immunology & infectious disease
Author, co-author :
Bouaziz, Ahlem ;  Université de Liège > Département des sciences de la vie > Centre d'ingénierie des protéines
Walgraffe, David
Bouillot, Celine
Herman, Julie
FOGUENNE, Jacques ;  Centre Hospitalier Universitaire de Liège - CHU > Hématologie biologique et immuno hématologie
Gothot, André ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie de la coagulation et de l'hémostase
Louis, Renaud ;  Université de Liège - ULiège > Département des sciences cliniques > Pneumologie - Allergologie
Hentges, Francois
Jacquet, Alain
Mailleux, Anne-Catherine
Chevigne, Andy
Galleni, Moreno ;  Université de Liège - ULiège > Département des sciences de la vie > Macromolécules biologiques
Adam, Emmanuelle
Dumez, Marie-Eve
More authors (4 more) Less
Language :
English
Title :
Development of recombinant stable house dust mite allergen Der p 3 molecules for component-resolved diagnosis and specific immunotherapy.
Publication date :
2015
Journal title :
Clinical and Experimental Allergy
ISSN :
0954-7894
eISSN :
1365-2222
Publisher :
Blackwell, Oxford, United Kingdom
Volume :
45
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Mise au point d’une forme stable de l’allergène Der p 3 de Dermatophagoides pteronyssinus pour le diagnostic rapide et le développement de nouvelles approches d’immunothérapie de l’allergie aux acariens
Funders :
ULiège - Université de Liège [BE]
Commentary :
This article is protected by copyright. All rights reserved.
Available on ORBi :
since 20 January 2015

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