Treating allergies with modified allergens is an approach to make the treatment safer and more efficient. Art v 1 is the most prominent allergen of mugwort pollen and a significant cause of hayfever around Europe. The aim of this study was to reduce the allergenicity of Art v 1 by acetylation, and to investigate the capacity of the modified protein to generate blocking antibodies. The reduction of allergenicity of Art v 1 following acetylation was monitored by immunoblot, ELISA inhibition using a pool of sera from mugwort pollen allergic patients, basophil activation assay and by skin prick testing of mugwort-allergic patients. Rabbits were immunized against Art v 1 and acetylated Art v 1 (acArt v 1) and the rabbit antisera were tested for their capacity to block human IgE binding in ELISA. Human T cell proliferation against Art v 1 and acArt v 1 was examined in peripheral blood mononuclear cells (PBMCs) of mugwort pollen allergic patients and cytokine release in PBMC cultures was moni...tored. Acetylation of Art v 1 gave a derivative of reduced allergenicity in the in vitro and ex vivo tests applied. The skin test reactivity to acArt v 1 was significantly reduced in 19 patients when compared with the reactivity to Art v 1. Rabbit antibodies to acArt v 1 and Art v 1 showed similar capacity to block human IgE binding to Art v 1 in inhibition ELISA. Both proteins were able to induce proliferation of PBMCs and CD3/CD4(+) cells of mugwort-allergic patients. Release of IL-5 was significantly reduced in cultures stimulated with acArt v 1. Art v 1 modified by acetylation had a significantly reduced allergenicity in vitro and in vivo, while its immunogenicity was retained. Modification of allergens by acetylation could be a new strategy for allergen-specific immunotherapy. Cite this as: I. Perovic, M. Milovanovic, D. Stanic, L. Burazer, D. Petrovic, N. Milcic-Matic, G. Gafvelin, M. van Hage, R. Jankov and T. Cirkovic Velickovic, Clinical and Experimental Allergy, 2009 (39) 435-446.
Keywords:
acetylation / allergen-specific immunotherapy / allergoid / Art v 1 / blocking antibodies / mugwort pollen allergy
Source:
Clinical and Experimental Allergy, 2009, 39, 3, 435-446
TY - JOUR
AU - Perović, I.
AU - Milovanović, Mina
AU - Stanić, Dragana
AU - Burazer, Lidija
AU - Petrović, D.
AU - Milčić-Matić, Natalija
AU - Gafvelink, G.
AU - van Hage, Marianne
AU - Jankov, Ratko
AU - Ćirković-Veličković, Tanja
PY - 2009
UR - http://intor.torlakinstitut.com/handle/123456789/270
AB - Treating allergies with modified allergens is an approach to make the treatment safer and more efficient. Art v 1 is the most prominent allergen of mugwort pollen and a significant cause of hayfever around Europe. The aim of this study was to reduce the allergenicity of Art v 1 by acetylation, and to investigate the capacity of the modified protein to generate blocking antibodies. The reduction of allergenicity of Art v 1 following acetylation was monitored by immunoblot, ELISA inhibition using a pool of sera from mugwort pollen allergic patients, basophil activation assay and by skin prick testing of mugwort-allergic patients. Rabbits were immunized against Art v 1 and acetylated Art v 1 (acArt v 1) and the rabbit antisera were tested for their capacity to block human IgE binding in ELISA. Human T cell proliferation against Art v 1 and acArt v 1 was examined in peripheral blood mononuclear cells (PBMCs) of mugwort pollen allergic patients and cytokine release in PBMC cultures was monitored. Acetylation of Art v 1 gave a derivative of reduced allergenicity in the in vitro and ex vivo tests applied. The skin test reactivity to acArt v 1 was significantly reduced in 19 patients when compared with the reactivity to Art v 1. Rabbit antibodies to acArt v 1 and Art v 1 showed similar capacity to block human IgE binding to Art v 1 in inhibition ELISA. Both proteins were able to induce proliferation of PBMCs and CD3/CD4(+) cells of mugwort-allergic patients. Release of IL-5 was significantly reduced in cultures stimulated with acArt v 1. Art v 1 modified by acetylation had a significantly reduced allergenicity in vitro and in vivo, while its immunogenicity was retained. Modification of allergens by acetylation could be a new strategy for allergen-specific immunotherapy. Cite this as: I. Perovic, M. Milovanovic, D. Stanic, L. Burazer, D. Petrovic, N. Milcic-Matic, G. Gafvelin, M. van Hage, R. Jankov and T. Cirkovic Velickovic, Clinical and Experimental Allergy, 2009 (39) 435-446.
PB - Wiley, Hoboken
T2 - Clinical and Experimental Allergy
T1 - Allergenicity and immunogenicity of the major mugwort pollen allergen Art v 1 chemically modified by acetylation
EP - 446
IS - 3
SP - 435
VL - 39
DO - 10.1111/j.1365-2222.2008.03158.x
ER -
@article{
author = "Perović, I. and Milovanović, Mina and Stanić, Dragana and Burazer, Lidija and Petrović, D. and Milčić-Matić, Natalija and Gafvelink, G. and van Hage, Marianne and Jankov, Ratko and Ćirković-Veličković, Tanja",
year = "2009",
abstract = "Treating allergies with modified allergens is an approach to make the treatment safer and more efficient. Art v 1 is the most prominent allergen of mugwort pollen and a significant cause of hayfever around Europe. The aim of this study was to reduce the allergenicity of Art v 1 by acetylation, and to investigate the capacity of the modified protein to generate blocking antibodies. The reduction of allergenicity of Art v 1 following acetylation was monitored by immunoblot, ELISA inhibition using a pool of sera from mugwort pollen allergic patients, basophil activation assay and by skin prick testing of mugwort-allergic patients. Rabbits were immunized against Art v 1 and acetylated Art v 1 (acArt v 1) and the rabbit antisera were tested for their capacity to block human IgE binding in ELISA. Human T cell proliferation against Art v 1 and acArt v 1 was examined in peripheral blood mononuclear cells (PBMCs) of mugwort pollen allergic patients and cytokine release in PBMC cultures was monitored. Acetylation of Art v 1 gave a derivative of reduced allergenicity in the in vitro and ex vivo tests applied. The skin test reactivity to acArt v 1 was significantly reduced in 19 patients when compared with the reactivity to Art v 1. Rabbit antibodies to acArt v 1 and Art v 1 showed similar capacity to block human IgE binding to Art v 1 in inhibition ELISA. Both proteins were able to induce proliferation of PBMCs and CD3/CD4(+) cells of mugwort-allergic patients. Release of IL-5 was significantly reduced in cultures stimulated with acArt v 1. Art v 1 modified by acetylation had a significantly reduced allergenicity in vitro and in vivo, while its immunogenicity was retained. Modification of allergens by acetylation could be a new strategy for allergen-specific immunotherapy. Cite this as: I. Perovic, M. Milovanovic, D. Stanic, L. Burazer, D. Petrovic, N. Milcic-Matic, G. Gafvelin, M. van Hage, R. Jankov and T. Cirkovic Velickovic, Clinical and Experimental Allergy, 2009 (39) 435-446.",
publisher = "Wiley, Hoboken",
journal = "Clinical and Experimental Allergy",
title = "Allergenicity and immunogenicity of the major mugwort pollen allergen Art v 1 chemically modified by acetylation",
pages = "446-435",
number = "3",
volume = "39",
doi = "10.1111/j.1365-2222.2008.03158.x"
}
Perović, I., Milovanović, M., Stanić, D., Burazer, L., Petrović, D., Milčić-Matić, N., Gafvelink, G., van Hage, M., Jankov, R.,& Ćirković-Veličković, T.. (2009). Allergenicity and immunogenicity of the major mugwort pollen allergen Art v 1 chemically modified by acetylation. in Clinical and Experimental Allergy
Wiley, Hoboken., 39(3), 435-446.
https://doi.org/10.1111/j.1365-2222.2008.03158.x
Perović I, Milovanović M, Stanić D, Burazer L, Petrović D, Milčić-Matić N, Gafvelink G, van Hage M, Jankov R, Ćirković-Veličković T. Allergenicity and immunogenicity of the major mugwort pollen allergen Art v 1 chemically modified by acetylation. in Clinical and Experimental Allergy. 2009;39(3):435-446.
doi:10.1111/j.1365-2222.2008.03158.x .
Perović, I., Milovanović, Mina, Stanić, Dragana, Burazer, Lidija, Petrović, D., Milčić-Matić, Natalija, Gafvelink, G., van Hage, Marianne, Jankov, Ratko, Ćirković-Veličković, Tanja, "Allergenicity and immunogenicity of the major mugwort pollen allergen Art v 1 chemically modified by acetylation" in Clinical and Experimental Allergy, 39, no. 3 (2009):435-446,
https://doi.org/10.1111/j.1365-2222.2008.03158.x . .
