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Schein CH. Identifying Similar Allergens and Potentially Cross-Reacting Areas Using Structural Database of Allergenic Proteins (SDAP) Tools and D-Graph. Methods Mol Biol 2024; 2717:269-284. [PMID: 37737991 DOI: 10.1007/978-1-0716-3453-0_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
The Structural Database of Allergenic Proteins (SDAP) provides rapid search tools to identify similarities among allergens, their IgE epitopes, and to determine the potential allergenicity of any novel protein. Many labs have identified IgE-binding proteins and their antibody binding or T cell epitopes using dotspots or microarrays. This chapter describes how to determine the relationship of these proteins and peptides to known allergens using the tools implemented in SDAP. One can also search with these smaller peptide similarity search tool implemented in SDAP to find similar sequences with low property distance (PD) values in the over 1500 sequences of allergens. The sequences can be compared by mapping on the surface of the protein structures provided for nearly all the allergens in SDAP. Once the user has a unique list of similar sequences, they can be graphed in 2D according to interpeptide PD values calculated automatically by the D-graph program. This chapter provides a step-by-step description of how to do this, starting from a protein similar to the Ole e 1 (olive pollen) allergen family.
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Affiliation(s)
- Catherine H Schein
- Department of Biochemistry and Molecular Biology, Institute for Human Infections and Immunity (IHII), University of Texas Medical Branch, Galveston, TX, USA.
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2
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Robledo Retana T, Bradley-Clarke J, Croll T, Rose R, Hoti I, Stagg AJ, Villalba M, Pickersgill RW. Lig v 1 structure and the inflammatory response to the Ole e 1 protein family. Allergy 2020; 75:2395-2398. [PMID: 32359174 DOI: 10.1111/all.14351] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 04/12/2020] [Accepted: 04/26/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Tania Robledo Retana
- Department of Biochemistry, School of Biological and Chemical Sciences, Queen Mary University of London, London, UK
| | - Jack Bradley-Clarke
- Department of Biochemistry, School of Biological and Chemical Sciences, Queen Mary University of London, London, UK
| | - Tristan Croll
- Cambridge Institute for Medical Research, Cambridge, UK
| | - Ruth Rose
- Protein Production Facility, School of Biological and Chemical Sciences, Queen Mary University of London, London, UK
| | - Inva Hoti
- Centre for Immunobiology, Blizard Institute, Queen Mary University of London, London, UK
| | - Andrew J Stagg
- Centre for Immunobiology, Blizard Institute, Queen Mary University of London, London, UK
| | - Mayte Villalba
- Biochemistry and Molecular Biology I, Complutense University of Madrid Faculty of Chemical Sciences, Madrid, Spain
| | - Richard W Pickersgill
- Department of Biochemistry, School of Biological and Chemical Sciences, Queen Mary University of London, London, UK
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3
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Qian M, Xu L, Tang C, Zhang H, Gao H, Cao P, Yin H, Wu L, Wu J, Gu C, Zhang S. PbrPOE21 inhibits pear pollen tube growth in vitro by altering apical reactive oxygen species content. PLANTA 2020; 252:43. [PMID: 32870426 DOI: 10.1007/s00425-020-03446-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 08/21/2020] [Indexed: 06/11/2023]
Abstract
Genome-wide identification, tissue-specific expression analysis and functional characterization of selected genes containing the pear Pollen Olea europaea I domain reveal their roles in pollen tube growth. Genes containing the Pollen Olea europaea I (POE) domain play crucial roles in diverse growth and developmental processes. Nevertheless, the specific functions of POE family members in progression of pollen tube growth (PTG) remain uncharacterized. We identified 45 PbrPOE genes in the pear (Pyrus bretschneideri) genome, clustered into seven subclasses. PbrPOE genes contained 1 to 11 exons and 0 to 10 introns, with exon/intron structure mostly conserved within each subclass. Whole-genome duplication has mainly contributed to the duplication pattern of PbrPOE genes in pear. Expression profiles of 45 PbrPOE genes in 12 different pear tissues revealed that six PbrPOE genes (PbrPOE6, 12, 21, 29, 35 and 41) of subclass B were highly expressed during the growth of the pear pollen tube in vitro. PbrPOE21 was selected for further functional analysis on the basis of its high and differential expression pattern in pollen. Antisense oligodeoxynucleotide assays demonstrated that PTG was augmented in vitro when PbrPOE21 expression was significantly inhibited. Moreover, pollen tube length in vitro was reduced when PbrPOE21 was transitorily over-expressed using particle bombardment technology. Exogenous PbrPOE21 recombinant protein inhibited PTG in vitro at an optimum concentration of 1.8 µM. PbrPOE21 also affected reactive oxygen species content in the pear pollen tube apex. We suggest that PbrPOE21 inhibits PTG in vitro by altering apical reactive oxygen species content.
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Affiliation(s)
- Ming Qian
- College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Linlin Xu
- College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chao Tang
- College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hao Zhang
- College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hongru Gao
- College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Peng Cao
- College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hao Yin
- College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lei Wu
- College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Juyou Wu
- College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chao Gu
- College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shaoling Zhang
- College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China.
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Robledo-Retana T, Mani BM, Teran LM. Ligustrum pollen: New insights into allergic disease. World Allergy Organ J 2020; 13:100104. [PMID: 32055279 PMCID: PMC7005548 DOI: 10.1016/j.waojou.2020.100104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 11/28/2019] [Accepted: 01/15/2020] [Indexed: 11/29/2022] Open
Abstract
Respiratory allergies are important medical conditions because they affect nearly 20% of the population worldwide, with higher prevalence in industrialized cities. Aeroallergens such as pollen are responsible for up to 40% of respiratory allergies. The pollen from Ligustrum (privet hedge) is a great source of inhalant allergens associated with allergic respiratory diseases around the world. However, it has been underestimated as a sensitization factor. Interestingly, over the last few years a number of novel allergens have been identified from Ligustrum using immunoproteomics technologies. Cross-linking of IgE and Ligustrum allergens could lead to the rapid release of inflammatory mediators by mast cells and basophils. These will promote a late response characterized by activation of T cells and overproduction of Th2 cytokines such as IL-4, IL-5, IL-9, and IL-13. These inflammatory changes cause respiratory diseases like asthma and allergic rhinitis in sensitized subjects. Here, we review Ligustrum pollen allergens and focus on their clinical and immunological significance in allergic disease as well as the use of hypoallergenic derivatives in personalized therapy.
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Affiliation(s)
- Tania Robledo-Retana
- Biochemistry Department, Queen Mary University of London, Mile End Rd, London, E1 4NS, UK
| | - Blessy M Mani
- Instituto Nacional de Enfermedades Respiratorias, Calzada de Tlalpan 4502, C.P. 14080, Mexico City, Mexico
| | - Luis M Teran
- Instituto Nacional de Enfermedades Respiratorias, Calzada de Tlalpan 4502, C.P. 14080, Mexico City, Mexico
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Ole e 15 and its human counterpart -PPIA- chimeras reveal an heterogeneous IgE response in olive pollen allergic patients. Sci Rep 2019; 9:15027. [PMID: 31636292 PMCID: PMC6803672 DOI: 10.1038/s41598-019-51005-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 09/16/2019] [Indexed: 12/27/2022] Open
Abstract
Olive pollen is a major cause of immunoglobulin E (IgE)-mediated allergy in Mediterranean countries. It is expected to become a worldwide leading allergenic source because olive cultivation is increasing in many countries. Ole e 15 belongs to the cyclophilin pan-allergen family, which includes highly cross-reactive allergens from non-related plant, animal and mold species. Here, the amino acid differences between Ole e 15 and its weak cross-reactive human homolog PPIA were grafted onto Ole e 15 to assess the contribution of specific surface areas to the IgE-binding. Eight Ole e 15-PPIA chimeras were produced in E. coli, purified and tested with 20 sera from Ole e 15-sensitized patients with olive pollen allergy by ELISA experiments. The contribution of linear epitopes was analyzed using twelve overlapping peptides spanning the entire Ole e 15 sequence. All the patients displayed a diverse reduction of the IgE-reactivity to the chimeras, revealing a highly polyclonal and patient-specific response to Ole e 15. IgE-epitopes are distributed across the entire Ole e 15 surface. Two main surface areas containing relevant conformational epitopes have been characterized. This is the first study to identify important IgE-binding regions on the surface of an allergenic cyclophilin.
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Stemeseder T, Freier R, Wildner S, Fuchs JE, Briza P, Lang R, Batanero E, Lidholm J, Liedl KR, Campo P, Hawranek T, Villalba M, Brandstetter H, Ferreira F, Gadermaier G. Crystal structure of Pla l 1 reveals both structural similarity and allergenic divergence within the Ole e 1-like protein family. J Allergy Clin Immunol 2016; 140:277-280. [PMID: 27965108 DOI: 10.1016/j.jaci.2016.10.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 09/16/2016] [Accepted: 10/05/2016] [Indexed: 10/20/2022]
Affiliation(s)
- Teresa Stemeseder
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Regina Freier
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Sabrina Wildner
- Christian Doppler Laboratory for Biosimilar Characterization, University of Salzburg, Salzburg, Austria
| | - Julian E Fuchs
- Institute of General, Inorganic, and Theoretical Chemistry, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Peter Briza
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Roland Lang
- Paracelsus Medical University Salzburg, Department of Dermatology, Salzburg, Austria
| | - Eva Batanero
- Departamento Bioquímica y Biología Molecular I, Universidad Complutense, Madrid, Spain
| | | | - Klaus R Liedl
- Institute of General, Inorganic, and Theoretical Chemistry, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Paloma Campo
- Allergy Unit, Instituto de Investigación Biomédica de Málaga, Regional University Hospital of Malaga, Malaga, Spain
| | - Thomas Hawranek
- Paracelsus Medical University Salzburg, Department of Dermatology, Salzburg, Austria
| | - Mayte Villalba
- Departamento Bioquímica y Biología Molecular I, Universidad Complutense, Madrid, Spain
| | - Hans Brandstetter
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria; Christian Doppler Laboratory for Biosimilar Characterization, University of Salzburg, Salzburg, Austria
| | - Fatima Ferreira
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Gabriele Gadermaier
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria; Christian Doppler Laboratory for Biosimilar Characterization, University of Salzburg, Salzburg, Austria.
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7
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Campo P, Villalba M, Barrionuevo E, Rondón C, Salas M, Galindo L, Rodríguez MJ, López-Rodríguez JC, Prieto-Del Prado MA, Torres MJ, Blanca M, Mayorga C. Immunologic responses to the major allergen of Olea europaea in local and systemic allergic rhinitis subjects. Clin Exp Allergy 2016. [PMID: 26221871 DOI: 10.1111/cea.12600] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To evaluate the in vivo and in vitro responses to nOle e 1 in allergic rhinitis (AR) and local allergic rhinitis (LAR) patients sensitized to olive tree pollen (OL) confirmed by nasal allergen provocation test (NAPT). METHODS Twelve subjects with AR, 12 with LAR and 12 subjects as control group (CG) were selected. Skin testing and NAPT with nOle e 1 were performed. Eosinophilic cationic protein (ECP) and tryptase were measured in nasal lavages before and after NAPT. Serum IgE to OL allergens was measured by ELISA. Basophil activation tests (BAT) with OL and nOle e 1 and dendritic cell maturation/proliferation studies were carried out. RESULTS All AR (12/12) and 10/12 (83%) of LAR had a +NAPT to nOle e 1. ECP levels in nasal lavages were significantly increased after NAPT in both AR and LAR compared with CG at 15 min (P < 0.05). Serum IgE was positive only in AR. All AR had +BAT responses to OL and 10/12 to nOle e 1 (83%); 8/12 LAR (66.6%) had a +BAT to OL and 4/12 (33%) to nOle e 1, with only one subject of the CG with a +BAT to both OL and nOle e 1 (8%). Dendritic cell proliferation to nOle e 1 was increased in AR compared to LAR and CG (P = 0.019 and P = 0.001, respectively). CONCLUSION Both AR and LAR had a similar in vivo response to nOle e 1 with release of inflammatory mediators. Specific basophil activation with OL and nOle e 1 was observed in LAR confirming previous data obtained with dust mites.
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Affiliation(s)
- P Campo
- U.G.C. Allergy, IBIMA, Regional University Hospital of Málaga, UMA, Málaga, Spain
| | - M Villalba
- Department of Biochemistry and Molecular Biology, Faculty of Chemistry, Complutense University of Madrid, Madrid, Spain
| | - E Barrionuevo
- U.G.C. Allergy, IBIMA, Regional University Hospital of Málaga, UMA, Málaga, Spain
| | - C Rondón
- U.G.C. Allergy, IBIMA, Regional University Hospital of Málaga, UMA, Málaga, Spain
| | - M Salas
- U.G.C. Allergy, IBIMA, Regional University Hospital of Málaga, UMA, Málaga, Spain
| | - L Galindo
- U.G.C. Allergy, IBIMA, Regional University Hospital of Málaga, UMA, Málaga, Spain
| | - M J Rodríguez
- Allergy Research Laboratory, IBIMA, Regional University Hospital of Málaga, UMA, Málaga, Spain
| | - J C López-Rodríguez
- Department of Biochemistry and Molecular Biology, Faculty of Chemistry, Complutense University of Madrid, Madrid, Spain
| | - M A Prieto-Del Prado
- U.G.C. Allergy, IBIMA, Regional University Hospital of Málaga, UMA, Málaga, Spain
| | - M J Torres
- U.G.C. Allergy, IBIMA, Regional University Hospital of Málaga, UMA, Málaga, Spain
| | - M Blanca
- U.G.C. Allergy, IBIMA, Regional University Hospital of Málaga, UMA, Málaga, Spain
| | - C Mayorga
- U.G.C. Allergy, IBIMA, Regional University Hospital of Málaga, UMA, Málaga, Spain.,Allergy Research Laboratory, IBIMA, Regional University Hospital of Málaga, UMA, Málaga, Spain
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8
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Calzada D, Aguerri M, Baos S, Montaner D, Mata M, Dopazo J, Quiralte J, Florido F, Lahoz C, Cárdaba B. Therapeutic targets for olive pollen allergy defined by gene markers modulated by Ole e 1-derived peptides. Mol Immunol 2014; 64:252-61. [PMID: 25553522 DOI: 10.1016/j.molimm.2014.12.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 12/01/2014] [Accepted: 12/08/2014] [Indexed: 12/19/2022]
Abstract
Two regions of Ole e 1, the major olive-pollen allergen, have been characterized as T-cell epitopes, one as immunodominant region (aa91-130) and the other, as mainly recognized by non-allergic subjects (aa10-31). This report tries to characterize the specific relevance of these epitopes in the allergic response to olive pollen by analyzing the secreted cytokines and the gene expression profiles induced after specific stimulation of peripheral blood mononuclear cells (PBMCs). PBMCs from olive pollen-allergic and non-allergic control subjects were stimulated with olive-pollen extract and Ole e 1 dodecapeptides containing relevant T-cell epitopes. Levels of cytokines were measured in cellular supernatants and gene expression was determined by microarrays, on the RNAs extracted from PBMCs. One hundred eighty-nine differential genes (fold change >2 or <-2, P<0.05) were validated by qRT-PCR in a large population. It was not possible to define a pattern of response according the overall cytokine results but interesting differences were observed, mainly in the regulatory cytokines. Principal component (PCA) gene-expression analysis defined clusters that correlated with the experimental conditions in the group of allergic subjects. Gene expression and functional analyses revealed differential genes and pathways among the experimental conditions. A set of 51 genes (many essential to T-cell tolerance and homeostasis) correlated with the response to aa10-31 of Ole e 1. In conclusion, two peptides derived from Ole e 1 could regulate the immune response in allergic patients, by gene-expression modification of several regulation-related genes. These results open new research ways to the regulation of allergy by Oleaceae family members.
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Affiliation(s)
- David Calzada
- Immunology Department, IIS-Fundación Jiménez Díaz, UAM, Madrid, Spain
| | - Miriam Aguerri
- Immunology Department, IIS-Fundación Jiménez Díaz, UAM, Madrid, Spain
| | - Selene Baos
- Immunology Department, IIS-Fundación Jiménez Díaz, UAM, Madrid, Spain
| | - David Montaner
- Functional Genomics Unit Bioinformatics Department, Centro de Investigación Príncipe Felipe (CIPF), Valencia, Spain
| | - Manuel Mata
- Genomics Department, Fundación de Investigación, Hospital General Universitario, Valencia, Spain; CIBERES, CIBER de Enfermedades Respiratorias, Madrid, Spain
| | - Joaquín Dopazo
- Functional Genomics Unit Bioinformatics Department, Centro de Investigación Príncipe Felipe (CIPF), Valencia, Spain
| | - Joaquín Quiralte
- Allergy Department, Hospital Universitario Vírgen del Rocío, Sevilla, Spain
| | - Fernando Florido
- Allergy Department, Hospital Universitario San Cecilio, Granada, Spain
| | - Carlos Lahoz
- Immunology Department, IIS-Fundación Jiménez Díaz, UAM, Madrid, Spain; CIBERES, CIBER de Enfermedades Respiratorias, Madrid, Spain
| | - Blanca Cárdaba
- Immunology Department, IIS-Fundación Jiménez Díaz, UAM, Madrid, Spain; CIBERES, CIBER de Enfermedades Respiratorias, Madrid, Spain.
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9
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Gadermaier G, Eichhorn S, Vejvar E, Weilnböck L, Lang R, Briza P, Huber CG, Ferreira F, Hawranek T. Plantago lanceolata: An important trigger of summer pollinosis with limited IgE cross-reactivity. J Allergy Clin Immunol 2014; 134:472-5. [DOI: 10.1016/j.jaci.2014.02.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 01/23/2014] [Accepted: 02/04/2014] [Indexed: 11/30/2022]
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Niederberger V, Eckl-Dorna J, Pauli G. Recombinant allergen-based provocation testing. Methods 2014; 66:96-105. [PMID: 23920475 PMCID: PMC3988965 DOI: 10.1016/j.ymeth.2013.07.037] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 07/08/2013] [Accepted: 07/15/2013] [Indexed: 01/02/2023] Open
Abstract
Over the last 25 years, recombinant allergens from all important allergen sources have been cloned and are now available as recombinant proteins. These molecules can be produced in practically unlimited amounts without biological or batch-to-batch variability. It has been shown in provocation tests that recombinant allergens have similar clinical effects as their natural counterparts. With the help of these tools it is possible to reveal the precise reactivity profiles of patients and to uncover and differentiate cross-reactivity from genuine sensitization to an allergen source. Although it has been shown some time ago that it would be possible to replace crude allergen extracts with recombinant allergens for skin prick testing, and even though the use of allergen components can improve routine diagnosis, these tools are still not available for clinical routine applications. The use of provocation tests is a crucial step in the development of new, hypoallergenic vaccines for therapy of allergic disease. Here we describe important provocation methods (skin prick test, intradermal test, atopy patch test, nasal provocation, colonoscopic provocation test) and give an overview of the clinical provocation studies which have been performed with recombinant allergens so far.
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Affiliation(s)
| | - Julia Eckl-Dorna
- Dept. of Otorhinolaryngology, Medical University of Vienna, Austria
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11
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Villalba M, Rodríguez R, Batanero E. The spectrum of olive pollen allergens. From structures to diagnosis and treatment. Methods 2013; 66:44-54. [PMID: 23920474 DOI: 10.1016/j.ymeth.2013.07.038] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 07/05/2013] [Accepted: 07/15/2013] [Indexed: 12/22/2022] Open
Abstract
Olive tree is one of the main allergy sources in Mediterranean countries. The identification of the allergenic repertoire from olive pollen has been essential for the development of rational strategies of standardization, diagnosis, and immunotherapy, all of them focused to increase the life quality of the patients. From its complex allergogram, twelve allergens - Ole e 1 to Ole e 12 - have been identified and characterized to date. Most of them have been cloned and produced as recombinant forms, whose availability have allowed analyzing their three-dimensional structures, mapping their T-cell and B-cell epitopes, and determining the precise allergenic profile of patients for a subsequent patient-tailored immunotherapy. Protein mutant, hypoallergenic derivatives, or recombinant fragments have been also useful experimental tools to analyze the immune recognition of allergens. To test these molecules before using them for clinic purposes, a mouse model of allergic sensitizations has been used. This model has been helpful for assaying different prophylactic approaches based on tolerance induction by intranasal administration of allergens or hypoallergens, used as free or integrated in different delivery systems, and their findings suggest a promising utilization as nasal vaccines. Exosomes - nanovesicles isolated from bronchoalveolar lavage fluid of tolerogenic mice - have shown immunomodulatory properties, being able to protect mice against sensitization to Ole e 1.
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Affiliation(s)
- Mayte Villalba
- Dpto. Bioquímica y Biología Molecular I, Facultad de C. Químicas, UCM, Madrid, Spain.
| | - Rosalía Rodríguez
- Dpto. Bioquímica y Biología Molecular I, Facultad de C. Químicas, UCM, Madrid, Spain
| | - Eva Batanero
- Dpto. Bioquímica y Biología Molecular I, Facultad de C. Químicas, UCM, Madrid, Spain
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12
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Esteve C, Montealegre C, Marina ML, García MC. Analysis of olive allergens. Talanta 2012; 92:1-14. [PMID: 22385802 DOI: 10.1016/j.talanta.2012.01.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Revised: 12/31/2011] [Accepted: 01/08/2012] [Indexed: 12/17/2022]
Abstract
Olive pollen is one of the most important causes of seasonal respiratory allergy in Mediterranean countries, where this tree is intensely cultivated. Besides this, some cases of contact dermatitis and food allergy to the olive fruit and olive oil have been also described. Several scientific studies dealing with olive allergens has been reported, being the information available about them constantly increasing. Up to date, twelve allergens have been identified in olive pollen while just one allergen has been identified in olive fruit. This review article describes considerations about allergen extraction and production, also describing the different methodologies employed in the physicochemical and immunological characterization of olive allergens. Finally, a revision of the most relevant studies in the analysis of both olive pollen and olive fruit allergens is carried out.
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Affiliation(s)
- C Esteve
- Department of Analytical Chemistry, Faculty of Chemistry, University of Alcalá. Ctra., Madrid-Barcelona Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain
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Marazuela EG, Hajek R, Villalba M, Barber D, Breiteneder H, Rodríguez R, Batanero E. A non-allergenic Ole e 1-like protein from birch pollen as a tool to design hypoallergenic vaccine candidates. Mol Immunol 2012; 50:83-90. [PMID: 22266079 DOI: 10.1016/j.molimm.2011.12.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Accepted: 12/15/2011] [Indexed: 10/14/2022]
Abstract
Recombinant DNA technology offers several approaches to convert allergens into hypoallergenic derivatives that can represent the basis of novel, safer and more effective forms of allergy vaccines. In this context, we used a new strategy for the design of a hypoallergenic derivative of Ole e 1, the main allergen of olive pollen. By screening a cDNA library from birch pollen, the clone BB18, encoding the birch counterpart of Ole e 1, was identified. In this study, BB18 has been produce in Pichia pastoris as a recombinant protein and immunologically characterized. The well-established non-allergenic properties of BB18 were used to generate a genetic variant of Ole e 1, named OB(55-58), by site-direct mutagenesis of four residues (E(55)V(56)G(57)Y(58)) in an IgE/IgG epitope of Ole e 1 by the corresponding ones in BB18 (SDSE). OB(55-58) was expressed in P. pastoris, purified to homogeneity and analyzed for IgE-reactivity by means of ELISA using sera from olive pollen allergic patients and rat basophil activation assay. T cell reactivity was assayed in a mouse model of Ole e 1 sensitization. The mutant OB(55-58) exhibited an impaired IgE reactivity, but not affected T cell reactivity, compared to wild type rOle e 1. This study emphasizes the usefulness of BB18 as a tool for epitope mapping and for engineering hypoallergenic derivatives of Ole e 1 as vaccine candidates for allergy prevention and treatment.
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Affiliation(s)
- Eva G Marazuela
- Departamento de Bioquímica y Biología Molecular, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain
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Yuan HC, Wu KG, Chen CJ, Su SN, Shen HD, Chen YJ, Peng HJ. Mapping of IgE and IgG4 antibody-binding epitopes in Cyn d 1, the major allergen of Bermuda grass pollen. Int Arch Allergy Immunol 2011; 157:125-35. [PMID: 21985791 DOI: 10.1159/000327544] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Accepted: 03/04/2011] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Bermuda grass pollen (BGP) is an important seasonal aeroallergen worldwide which induces allergic disorders such as allergic rhinitis, conjunctivitis and asthma. Cyn d 1 is the major allergen of BGP. This study is aimed to map human IgE and IgG(4) antibody-binding sequential epitopes on Cyn d 1 by dot immunoblotting. METHODS Synthetic peptides (10-mers; 5 overlapping residues) spanning the full length of Cyn d 1 were used for dot immunoblotting to map human IgE and IgG(1-4) antibody-binding regions with sera from BGP-allergic patients. Synthetic peptides with more overlapping residues were used for further mapping. Essential amino acids in each epitope were examined by single amino acid substitution with alanine. Peptides with sequence polymorphism of epitopes of Cyn d 1 were also synthesized to extrapolate their differences in binding capability. RESULTS Four major IgE-binding epitopes (peptides 15(-1), 21, 33(-2) and 35(+1), corresponding to amino acids 70-79, 101-110, 159-167 and 172-181) and 5 major IgG(4)-binding epitopes (peptides 15(-1), 30(-2), 33(-2), 35(+1) and 39, corresponding to amino acids 70-79, 144-153, 159-167, 172-181 and 192-200) were identified. They are all located on the surface of the simulated Cyn d 1 molecule, and three of them are major epitopes for both IgE and IgG(4). Their critical amino acids were all characterized. Major epitopes for human IgG(1) to IgG(4) are almost identical. CONCLUSIONS This is the first study to map the sequential epitopes for human IgE and IgG(4) subclasses in Cyn d 1. It will be helpful for future development in immunotherapy and diagnosis.
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Affiliation(s)
- Han-Chih Yuan
- Children's Medical Center, Taipei Veterans General Hospital, Taipei, Taiwan
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15
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Twaroch TE, Focke M, Civaj V, Weber M, Balic N, Mari A, Ferrara R, Quirce S, Spitzauer S, Swoboda I, Valenta R. Carrier-bound, nonallergenic Ole e 1 peptides for vaccination against olive pollen allergy. J Allergy Clin Immunol 2011; 128:178-184.e7. [PMID: 21513971 DOI: 10.1016/j.jaci.2011.03.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Revised: 03/03/2011] [Accepted: 03/08/2011] [Indexed: 10/18/2022]
Abstract
BACKGROUND Trees of the family Oleaceae (olive and ash) are important allergen sources in Mediterranean countries, Northern and Central Europe, and North America. The major olive pollen allergen Ole e 1 represents the majority of allergenic epitopes in olive pollen and cross-reacts with Fra e 1, the major ash pollen allergen. OBJECTIVE We sought to develop a safe vaccine for the treatment of Oleaceae pollen allergy. METHODS We synthesized 5 peptides ranging from 32 to 36 amino acids, which covered the whole sequence of Ole e 1. The IgE and T-cell reactivity of the peptides was compared with that of Ole e 1 by means of dot blot experiments, as well as ELISA, and in proliferation assays. Rabbits were immunized with non-IgE-reactive, keyhole limpet hemocyanin-coupled peptides or Ole e 1. The reactivity of the IgG antibodies with Ole e 1 and their ability to inhibit IgE binding to nOle e 1 was evaluated by means of ELISA. RESULTS Only the C-terminal Ole e 1 peptide showed IgE binding, whereas the other peptides were nonallergenic. Immunization of rabbits with Ole e 1-derived peptides bound to the carrier molecule keyhole limpet hemocyanin induced in rabbits the production of Ole e 1-specific IgG antibodies, which cross-reacted with Fra e 1, and inhibited olive and ash pollen-sensitized patients' IgE binding to Ole e 1. CONCLUSION Two non-IgE-binding peptides with low T-cell reactivity from the N-terminus of Ole e 1 were identified that might represent safe vaccine candidates for immunotherapy of Oleaceae pollen allergy.
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Affiliation(s)
- Teresa E Twaroch
- Christian Doppler Laboratory for Allergy Research, Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
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16
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Castro AJ, Bednarczyk A, Schaeffer-Reiss C, Rodríguez-García MI, Van Dorsselaer A, Alché JDD. Screening of Ole e 1 polymorphism among olive cultivars by peptide mapping and N-glycopeptide analysis. Proteomics 2010; 10:953-62. [PMID: 20049857 DOI: 10.1002/pmic.200900192] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
In the present paper, we have used 2-DE coupled to MS analysis to examine the molecular variability of the Ole e 1 allergen in three olive cultivars (cvs). Our results confirmed that the predicted polymorphism of Ole e 1 at cDNA level is extended to the expressed protein. The profiles of both the Ole e 1 peptides and the N-glycan variants significantly changed among cvs. We observed that Picual and Arbequina cvs presented the highest and lowest degree of Ole e 1 polymorphism, respectively. Some of these peptides and N-glycans were distributed in a cv-specific manner. The putative implications of this molecular polymorphism in the development of the allergy symptoms are discussed.
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Affiliation(s)
- Antonio Jesús Castro
- Departamento de Bioquímica, Biología Celular y Molecular de Plantas, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain.
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17
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Dhyani A, Singh BP, Arora N, Jain VK, Sridhara S. A clinically relevant major cross-reactive allergen from mesquite tree pollen. Eur J Clin Invest 2008; 38:774-81. [PMID: 18837803 DOI: 10.1111/j.1365-2362.2008.02020.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Prosopis juliflora (mesquite) is one of the major sources of pollinosis in tropical and semi-arid countries of the world. The present study was undertaken to purify and characterize a major cross-reactive allergen from this tree species. MATERIALS AND METHODS Mesquite pollen extract was purified using reverse-phase chromatography. Allergen characterization was done by electrophoresis, enzyme-linked immunosorbent assay (ELISA) and Western blotting. Clinical relevance of the purified protein was analyzed by in vivo (skin tests) and in vitro experiments such as ELISA, histamine release, peripheral blood mononuclear cells (PBMC) proliferation and cytokine assays. Cross-reactivity of purified protein with allergenic tree species and lima bean (food) was assessed by inhibition assays. RESULTS A 66-kDa protein was purified from mesquite pollen extract using octadecyl silica resin. Purified protein recognized 90% of mesquite-sensitized patients in skin test and ELISA. It induced significant histamine release in allergic patients' blood and interleukin-4 secretion in the PBMC culture supernatants. Inhibition assays suggested close allergenic relationship of this protein with Ailanthus excelsa, Cassia siamea, Salvadora persica pollen and Phaseolus lunatus (lima bean - an edible legume). CONCLUSIONS A 66-kDa major cross-reactive allergen was isolated from mesquite pollen using single-step purification procedure. The protein seems relevant for clinical applications in allergic disorders.
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Affiliation(s)
- A Dhyani
- Institute of Genomics and Integrative Biology, Delhi, India
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18
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Hamman-Khalifa A, Castro AJ, Jiménez-López JC, Rodríguez-García MI, Alché JDD. Olive cultivar origin is a major cause of polymorphism for Ole e 1 pollen allergen. BMC PLANT BIOLOGY 2008; 8:10. [PMID: 18218146 PMCID: PMC2275730 DOI: 10.1186/1471-2229-8-10] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2007] [Accepted: 01/25/2008] [Indexed: 05/10/2023]
Abstract
BACKGROUND Pollens from different olive (Olea europaea L.) cultivars have been shown to differ significantly in their content in Ole e 1 and in their overall allergenicity. This allergen is, in addition, characterized by a high degree of polymorphism in its sequence. The purpose of this study is to evaluate the putative presence of divergences in Ole e 1 sequences from different olive cultivars. RESULTS RNA from pollen individually collected from 10 olive cultivars was used to amplify Ole e 1 sequences by RT-PCR, and the sequences were analyzed by using different bioinformatics tools. Numerous nucleotide substitutions were detected throughout the sequences, many of which resulted in amino acid substitutions in the deduced protein sequences. In most cases variability within a single variety was much lower than among varieties. Key amino acid changes in comparison with "canonical" sequences previously described in the literature included: a) the substitution of C19-relevant to the disulphide bond structure of the protein-, b) the presence of an additional N-glycosylation motif, and c) point substitutions affecting regions of Ole e 1 already described like relevant for the immunogenicity/allergenicity of the protein. CONCLUSION Varietal origin of olive pollen is a major factor determining the diversity of Ole e 1 variants. We consider this information of capital importance for the optimal design of efficient and safe allergen formulations, and useful for the genetic engineering of modified forms of the allergen among other applications.
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Affiliation(s)
- AbdelMounim Hamman-Khalifa
- Department of Biochemistry, Cell and Molecular Biology of Plants, Estación, Experimental del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC), Profesor Albareda 1, 18008, Granada, Spain
| | - Antonio Jesús Castro
- Department of Biochemistry, Cell and Molecular Biology of Plants, Estación, Experimental del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC), Profesor Albareda 1, 18008, Granada, Spain
| | - José Carlos Jiménez-López
- Department of Biochemistry, Cell and Molecular Biology of Plants, Estación, Experimental del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC), Profesor Albareda 1, 18008, Granada, Spain
| | - María Isabel Rodríguez-García
- Department of Biochemistry, Cell and Molecular Biology of Plants, Estación, Experimental del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC), Profesor Albareda 1, 18008, Granada, Spain
| | - Juan de Dios Alché
- Department of Biochemistry, Cell and Molecular Biology of Plants, Estación, Experimental del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC), Profesor Albareda 1, 18008, Granada, Spain
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Marazuela EG, Prado N, Moro E, Fernández-García H, Villalba M, Rodríguez R, Batanero E. Intranasal vaccination with poly(lactide-co-glycolide) microparticles containing a peptide T of Ole e 1 prevents mice against sensitization. Clin Exp Allergy 2008; 38:520-8. [PMID: 18205856 DOI: 10.1111/j.1365-2222.2007.02922.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Biodegradable microparticles, in particular poly(lactide-co-glycolide) (PLGA), have been shown as potential delivery vehicles for intranasal (i.n.) vaccines in animal models. OBJECTIVES To evaluate whether i.n. administration of PLGA microparticles containing a peptide with the major T cell epitope of Ole e 1, the main allergen of olive pollen, prevented mice from allergic sensitization to the whole protein. METHODS Peptide-PLGA microparticles were prepared by a solvent evaporation double emulsion method. Microparticles in a size range of 0.8 mum were evaluated for peptide loading and in vitro antigen release. Stability and immunogenicity of the entrapped peptide were retained, as determined by dot blot and ELISA inhibition. BALB/c mice were intranasally treated with peptide-PLGA microparticles for 3 consecutive days, 1 week before sensitization/challenge to Ole e 1. Blood, lungs and spleen were collected and analysed for immune response. Biodistribution of microparticles was investigated using confocal microscopy. RESULTS I.n. pretreatment of BALB/c mice with peptide-PLGA microparticles before sensitization to Ole e 1 led to a significant inhibition of serum allergen-specific IgE and IgG1 antibody levels, but a marked increase of specific IgG2a antibodies as compared with sham-pretreated mice. Moreover, IL-5 and IL-10 levels in spleen cell cultures were suppressed in peptide-PLGA pretreated mice. The airway histopathologic parameters associated with inflammation were significantly suppressed by the pretreatment. CONCLUSION These results demonstrate that i.n. immunization with peptide T-PLGA microparticles is effective in preventing subsequent allergic sensitization to Ole e 1. Our data indicate that peptide-PLGA microparticles may be promising candidates for the design of nasal vaccines against allergic diseases in humans.
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Affiliation(s)
- E G Marazuela
- Departamento de Bioquímica y Biología Molecular, Facultad de Química, Universidad Complutense, Madrid, Spain
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Marazuela EG, Rodríguez R, Fernández-García H, García MS, Villalba M, Batanero E. Intranasal immunization with a dominant T-cell epitope peptide of a major allergen of olive pollen prevents mice from sensitization to the whole allergen. Mol Immunol 2007; 45:438-45. [PMID: 17662454 DOI: 10.1016/j.molimm.2007.05.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2007] [Revised: 05/28/2007] [Accepted: 05/31/2007] [Indexed: 11/26/2022]
Abstract
Mucosal tolerance induction with vaccines based on peptides representing T-cell epitopes of allergens is a promising way for treating allergic diseases. Ole e 1 is the main allergen of olive pollen, which is an important cause of allergy in Mediterranean countries. The aim of this study was to evaluate the ability of the peptide T109-K130 containing a dominant T-cell epitope of Ole e 1, to modulate the allergen-specific immune response in a prophylactic mouse model. Mice were intranasally treated with the peptide 1 week prior to sensitization with Ole e 1. Blood, lungs and spleens were collected and analysed for immune response. Intranasal pretreatment of mice with the peptide led to suppress serum specific IgE, IgG1 and IgG2a antibody levels, and markedly reduced proliferative T-cell response and Th2-cytokine production, but increased IFN-gamma secretion in spleen cell cultures. Increased mRNA IL-10 levels were observed in lungs from pretreated mice. Pathologic alterations of the lung associated with airway inflammation (peribronchial/perivascular infiltrates, eosinophilia and mucus production) were significantly suppressed after pretreatment. Similar results were obtained when mice were sensitized 10 weeks after treatment. Our results demonstrate that intranasal administration of a single T-cell peptide protects mice against subsequent sensitization to the allergen, possibly via IFN-gamma and IL-10. This study emphasizes the usefulness of nasal peptide T-based vaccines against allergy.
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Affiliation(s)
- Eva G Marazuela
- Departamento de Bioquímica y Biología Molecular, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain
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Marazuela EG, Rodríguez R, Barber D, Villalba M, Batanero E. Hypoallergenic mutants of Ole e 1, the major olive pollen allergen, as candidates for allergy vaccines. Clin Exp Allergy 2007; 37:251-60. [PMID: 17250698 DOI: 10.1111/j.1365-2222.2006.02632.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND The C-terminal region of Ole e 1, a major allergen from olive pollen, is a dominant IgE-reactive site and offers a target for site-directed mutagenesis to produce variants with reduced IgE-binding capability. OBJECTIVE To evaluate in vitro and in vivo the immunogenic properties of three engineered derivatives of Ole e 1. METHODS One point (Y141A) and two deletion (135Delta10 and 140Delta5) mutants were generated by site-directed mutagenesis of Ole e 1-specific cDNA and produced in Pichia pastoris. Ole e 1 mutants were analysed for IgE reactivity by ELISA using sera from olive pollen-allergic patients. Their allergenicity was also investigated in both a mouse model of allergic sensitization and in basophil activation assays. IgG1 response was assayed by immunoblotting and competitive ELISA. T cell reactivity was evaluated by proliferation assays and cytokine production in splenocyte cultures. RESULTS The 135Delta10 mutant showed the strongest reduction in the IgE-binding capability of sera from olive pollen-allergic patients. Rat basophil leukaemia assays identified the deletion mutant 135Delta10 as the variant with the lowest beta-hexosaminidase-releasing capacity. Furthermore, the same 135Delta10 mutant induced the lowest IgE levels in a BALB/c mouse model of sensitization. All Ole e 1 mutants retained their allergen-specific T cell reactivity. Immunization of mice with the mutants induced IgG1 antibodies, which cross-reacted with Ole e 1 and Ole e 1-like allergens from ash, lilac and privet pollens. The ability of the human IgE to block the binding of anti-Ole e 1 mutant-specific mouse IgG1 antibodies to natural Ole e 1 demonstrated that Ole e 1 mutants are able to induce in vivo antibodies reactive to the natural allergen. CONCLUSION The 135Delta10 mutant with reduced allergenicity, intact T cell reactivity and capacity to induce blocking antibodies could provide a suitable candidate vaccine for efficient and safer therapy of olive pollen allergy.
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Affiliation(s)
- E G Marazuela
- Departamento de Bioquímica y Biología Molecular, Facultad de Química, Universidad Complutense, Madrid, Spain
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