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Castenmiller C, Stigler M, Kirpas ME, Versteeg S, Akkerdaas JH, Pena-Castellanos G, Blokhuis BR, Dreskin SC, Auger L, Desgagnés R, Martel C, Mirande L, Morel B, Roberge J, Stordeur V, Tropper G, Vézina LP, Gomord V, de Jong EC, Redegeld F, Shreffler WG, Aglas L, van Ree R. Plant-based enveloped Ara h 2 bioparticles display exceptional hypo-allergenicity. Clin Exp Allergy 2023; 53:577-581. [PMID: 36779573 PMCID: PMC10402690 DOI: 10.1111/cea.14294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/14/2023]
Affiliation(s)
- C Castenmiller
- Department of Experimental Immunology, Amsterdam University Medical Centers, Amsterdam Institute for Infection & Immunity, University of Amsterdam, Amsterdam, The Netherlands
| | - M Stigler
- Department of Biosciences and Medical Biology, Paris Lodron University of Salzburg, Salzburg, Austria
| | - M E Kirpas
- Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, Mass; Harvard Medical School and Massachusetts General Hospital, Boston, Mass; Food Allergy Center, Massachusetts General Hospital, Boston, Mass, USA
| | - S Versteeg
- Department of Experimental Immunology, Amsterdam University Medical Centers, Amsterdam Institute for Infection & Immunity, University of Amsterdam, Amsterdam, The Netherlands
| | - J H Akkerdaas
- Department of Experimental Immunology, Amsterdam University Medical Centers, Amsterdam Institute for Infection & Immunity, University of Amsterdam, Amsterdam, The Netherlands
| | - G Pena-Castellanos
- Department of Biosciences and Medical Biology, Paris Lodron University of Salzburg, Salzburg, Austria
| | - B R Blokhuis
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, The Netherlands
| | - S C Dreskin
- Division of Allergy and Clinical Immunology, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - L Auger
- Angany Inc., Québec, Québec, Canada
| | | | - C Martel
- Angany Inc., Québec, Québec, Canada
| | - L Mirande
- Angany Innovation, Val-de-Reuil, France
| | - B Morel
- Angany Innovation, Val-de-Reuil, France
| | | | | | | | | | - V Gomord
- Angany Innovation, Val-de-Reuil, France
| | - E C de Jong
- Department of Experimental Immunology, Amsterdam University Medical Centers, Amsterdam Institute for Infection & Immunity, University of Amsterdam, Amsterdam, The Netherlands
| | - F Redegeld
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, The Netherlands
| | - W G Shreffler
- Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, Mass; Harvard Medical School and Massachusetts General Hospital, Boston, Mass; Food Allergy Center, Massachusetts General Hospital, Boston, Mass, USA
| | - L Aglas
- Department of Biosciences and Medical Biology, Paris Lodron University of Salzburg, Salzburg, Austria
| | - R van Ree
- Department of Experimental Immunology, Amsterdam University Medical Centers, Amsterdam Institute for Infection & Immunity, University of Amsterdam, Amsterdam, The Netherlands.,Department of Otorhinolaryngology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
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Busold S, Aglas L, Gomord V, Stordeur V, Vézina L, Desgagnés R, Martel C, Bérubé M, Tropper G, Geijtenbeek T, Van Ree R. P033 SURFACE EXPRESSION OF MAJOR ALLERGENS ON PLANT-MADE BIOPARTICLES COMBINES HYPO-ALLERGENICITY WITH POTENT IMMUNE ACTIVATION. Ann Allergy Asthma Immunol 2021. [DOI: 10.1016/j.anai.2021.08.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Wolf M, Twaroch TE, Huber S, Reithofer M, Steiner M, Aglas L, Hauser M, Aloisi I, Asam C, Hofer H, Parigiani MA, Ebner C, Bohle B, Briza P, Neubauer A, Stolz F, Jahn-Schmid B, Wallner M, Ferreira F. Amb a 1 isoforms: Unequal siblings with distinct immunological features. Allergy 2017; 72:1874-1882. [PMID: 28464293 PMCID: PMC5700413 DOI: 10.1111/all.13196] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2017] [Indexed: 12/24/2022]
Abstract
Background Ragweed pollen represents a major allergy risk factor. Ragweed extracts contain five different isoforms of the major allergen Amb a 1. However, the immunological characteristics of Amb a 1 isoforms are not fully investigated. Here, we compared the physicochemical and immunological properties of three most important Amb a 1 isoforms. Methods After purification, the isoforms were physicochemically characterized, tested for antibody binding and induction of human T‐cell proliferative responses. Their immunological properties were further evaluated in vitro and in vivo in a mouse model. Results Amb a 1 isoforms exhibited distinct patterns of IgE binding and immunogenicity. Compared to Amb a 1.02 or 03 isoforms, Amb a 1.01 showed higher IgE‐binding activity. Isoforms 01 and 03 were the most potent stimulators of patients’ T cells. In a mouse model of immunization, Amb a 1.01 induced higher levels of IgG and IgE antibodies when compared to isoforms 02 and 03. Interestingly, ragweed‐sensitized patients also displayed an IgG response to Amb a 1 isoforms. However, unlike therapy‐induced antibodies, sensitization‐induced IgG did not show IgE‐blocking activity. Conclusion The present study showed that naturally occurring isoforms of Amb a 1 possess different immunogenic and sensitizing properties. These findings should be considered when selecting sequences for molecule‐based diagnosis and therapy for ragweed allergy. Due to its high IgE‐binding activity, isoform Amb a 1.01 should be included in diagnostic tests. In contrast, due to their limited B‐ and T‐cell cross‐reactivity patterns, a combination of different isoforms might be a more attractive strategy for ragweed immunotherapy.
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Affiliation(s)
- M. Wolf
- Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | | | - S. Huber
- Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - M. Reithofer
- Department of Pathophysiology and Allergy Research; Medical University of Vienna; Vienna Austria
| | - M. Steiner
- Department of Molecular Biology; University of Salzburg; Salzburg Austria
- Laboratory for Immunological and
Molecular Cancer Research; Paracelsus Medical University; Salzburg Austria
| | - L. Aglas
- Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - M. Hauser
- Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - I. Aloisi
- Department of Biological, Geological, and Environmental Sciences; University of Bologna; Bologna Italy
| | - C. Asam
- Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - H. Hofer
- Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - M. A. Parigiani
- Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - C. Ebner
- Allergy Clinic Reumannplatz; Vienna Austria
| | - B. Bohle
- Department of Pathophysiology and Allergy Research; Medical University of Vienna; Vienna Austria
| | - P. Briza
- Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - A. Neubauer
- Biomay AG; Vienna Competence Center; Vienna Austria
| | - F. Stolz
- Biomay AG; Vienna Competence Center; Vienna Austria
| | - B. Jahn-Schmid
- Department of Pathophysiology and Allergy Research; Medical University of Vienna; Vienna Austria
| | - M. Wallner
- Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - F. Ferreira
- Department of Molecular Biology; University of Salzburg; Salzburg Austria
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Abstract
It is estimated that pollen allergies affect approximately 40% of allergic individuals. In general, tree pollen allergies are mainly elicited by allergenic trees belonging to the orders Fagales, Lamiales, Proteales, and Pinales. Over 25 years ago, the gene encoding the major birch pollen allergen Bet v 1 was the first such gene to be cloned and its product characterized. Since that time, 53 tree pollen allergens have been identified and acknowledged by the WHO/IUIS allergen nomenclature subcommittee. Molecule‐based profiling of allergic sensitization has helped to elucidate the immunological connections of allergen cross‐reactivity, whereas advances in biochemistry have revealed structural and functional aspects of allergenic proteins. In this review, we provide a comprehensive overview of the present knowledge of the molecular aspects of tree pollen allergens. We analyze the geographic distribution of allergenic trees, discuss factors pivotal for allergic sensitization, and describe the role of tree pollen panallergens. Novel allergenic tree species as well as tree pollen allergens are continually being identified, making research in this field highly competitive and instrumental for clinical applications.
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Affiliation(s)
- C. Asam
- Department of Molecular Biology University of Salzburg Salzburg Austria
| | - H. Hofer
- Department of Molecular Biology University of Salzburg Salzburg Austria
| | - M. Wolf
- Department of Molecular Biology University of Salzburg Salzburg Austria
| | - L. Aglas
- Department of Molecular Biology University of Salzburg Salzburg Austria
| | - M. Wallner
- Department of Molecular Biology University of Salzburg Salzburg Austria
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Asam C, Batista AL, Moraes AH, de Paula VS, Almeida FCL, Aglas L, Kitzmüller C, Bohle B, Ebner C, Ferreira F, Wallner M, Valente AP. Bet v 1--a Trojan horse for small ligands boosting allergic sensitization? Clin Exp Allergy 2015; 44:1083-93. [PMID: 24979350 DOI: 10.1111/cea.12361] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 04/28/2014] [Accepted: 05/31/2014] [Indexed: 01/23/2023]
Abstract
BACKGROUND Birch pollen allergy represents the main cause of winter and spring pollinosis in the temperate climate zone of the northern hemisphere and sensitization towards Bet v 1, the major birch pollen allergen, affects over 100 million allergic patients. The major birch pollen allergen Bet v 1 has been described as promiscuous acceptor for a wide variety of hydrophobic ligands. OBJECTIVE In search of intrinsic properties of Bet v 1, which account responsible for the high allergenic potential of the protein, we thought to investigate the effects of ligand-binding on immunogenic as well as allergenic properties. METHODS As surrogate ligand of Bet v 1 sodium deoxycholate (DOC) was selected. Recombinant and natural Bet v 1 were characterised physico-chemically as well as immunologically in the presence or absence of DOC, and an animal model of allergic sensitization was established. Moreover, human IgE binding to Bet v 1 was analysed by nuclear magnetic resonance (NMR) spectroscopy. RESULTS Ligand-binding had an overall stabilizing effect on Bet v 1. This translated in a Th2 skewing of the immune response in a mouse model. Analyses of human IgE binding on Bet v 1 in mediator release assays revealed that ligand-bound allergen-induced degranulation at lower concentrations; however, in basophil activation tests with human basophils ligand-binding did not show this effect. For the first time, human IgE epitopes on Bet v 1 were determined using antibodies isolated from patients' sera. The IgE epitope mapping of Bet v 1 demonstrated the presence of multiple binding regions. CONCLUSIONS AND CLINICAL RELEVANCE Deoxycholate binding stabilizes conformational IgE epitopes on Bet v 1; however, the epitopes themselves remain unaltered. Therefore, we speculate that humans are exposed to both ligand-bound and free Bet v 1 during sensitization, disclosing the ligand-binding cavity of the allergen as key structural element.
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Affiliation(s)
- C Asam
- Christian Doppler Laboratory for Allergy Diagnosis and Therapy, University of Salzburg, Salzburg, Austria
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