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Öztemiz Topcu E, Gadermaier G. To stay or not to stay intact as an allergen: the endolysosomal degradation assay used as tool to analyze protein immunogenicity and T cell epitopes. FRONTIERS IN ALLERGY 2024; 5:1440360. [PMID: 39071040 PMCID: PMC11272489 DOI: 10.3389/falgy.2024.1440360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Accepted: 06/25/2024] [Indexed: 07/30/2024] Open
Abstract
Antigen uptake and processing of exogenous proteins is critical for adaptive immunity, particularly for T helper cell activation. Proteins undergo distinct proteolytic processing in endolysosomal compartments of antigen-presenting cells. The resulting peptides are presented on MHC class II molecules and specifically recognized by T cells. The in vitro endolysosomal degradation assay mimics antigen processing by incubating a protein of interest with a protease cocktail derived from the endolysosomal compartments of antigen presenting cells. The kinetics of protein degradation is monitored by gel electrophoresis and allows calculation of a protein's half-life and thus endolysosomal stability. Processed peptides are analyzed by mass spectrometry and abundant peptide clusters are shown to harbor T cell epitopes. The endolysosomal degradation assay has been widely used to study allergens, which are IgE-binding proteins involved in type I hypersensitivity. In this review article, we provide the first comprehensive overview of the endolysosomal degradation of 29 isoallergens and variants originating from the PR-10, Ole e 1-like, pectate lyase, defensin polyproline-linked, non-specific lipid transfer, mite group 1, 2, and 5, and tropomyosin protein families. The assay method is described in detail and suggestions for improved standardization and reproducibility are provided. The current hypothesis implies that proteins with high endolysosomal stability can induce an efficient immune response, whereas highly unstable proteins are degraded early during antigen processing and therefore not efficient for MHC II peptide presentation. To validate this concept, systematic analyses of high and low allergenic representatives of protein families should be investigated. In addition to purified molecules, allergen extracts should be degraded to analyze potential matrix effects and gastrointestinal proteolysis of food allergens. In conclusion, individual protein susceptibility and peptides obtained from the endolysosomal degradation assay are powerful tools for understanding protein immunogenicity and T cell reactivity. Systematic studies and linkage with in vivo sensitization data will allow the establishment of (machine-learning) tools to aid prediction of immunogenicity and allergenicity. The orthogonal method could in the future be used for risk assessment of novel foods and in the generation of protein-based immunotherapeutics.
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Zbîrcea LE, Buzan MR, Grijincu M, Cotarcă MD, Tamaș TP, Haidar L, Tănasie G, Huțu I, Babaev E, Stolz F, Valenta R, Păunescu V, Panaitescu C, Chen KW. Heterogenous Induction of Blocking Antibodies against Ragweed Allergen Molecules by Allergen Extract-Based Immunotherapy Vaccines. Vaccines (Basel) 2024; 12:635. [PMID: 38932364 PMCID: PMC11209568 DOI: 10.3390/vaccines12060635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/02/2024] [Accepted: 06/04/2024] [Indexed: 06/28/2024] Open
Abstract
Currently, allergen-specific immunotherapy (AIT) for ragweed allergy is still based on natural allergen extracts. This study aimed to analyse the ability of four commercially available AIT vaccines (CLUSTOID, TYRO-SIT, POLLINEX Quattro Plus and Diater Depot) regarding their ability to induce IgG antibodies against ragweed pollen allergens in rabbits. Accordingly, the IgG reactivity of AIT-induced rabbit sera was tested for ten different ragweed pollen allergens (Amb a 1, 3, 4, 5, 6, 8, 9, 10, 11 and 12) by an ELISA. Furthermore, the ability of rabbit AIT-specific sera to block allergic patients' IgE binding to relevant ragweed allergens (Amb a 1, 4, 6, 8 and 11) and to inhibit allergen-induced basophil activation was evaluated by an IgE inhibition ELISA and a mediator release assay. Only two AIT vaccines (Diater Depot > CLUSTOID) induced relevant IgG antibody levels to the major ragweed allergen Amb a 1. The IgG responses induced by the AIT vaccines against the other ragweed allergens were low and highly heterogeneous. Interestingly, the kinetics of IgG responses were different among the AIT vaccines and even within one AIT vaccine (Diater Depot) for Amb a 1 (long-lasting) versus Amb a 8 and Amb a 11 (short-lived). This could be due to variations in allergen contents, the immunogenicity of the allergens, and different immunization protocols. The IgE inhibition experiments showed that rabbit AIT-specific sera containing high allergen-specific IgG levels were able to inhibit patients' IgE binding and prevent the mediator release with Diater Depot. The high levels of allergen-specific IgG levels were associated with their ability to prevent the recognition of allergens by patients' IgE and allergen-induced basophil activation, indicating that the measurement of allergen-induced IgG could be a useful surrogate marker for the immunological efficacy of vaccines. Accordingly, the results of our study may be helpful for the selection of personalized AIT vaccination strategies for ragweed-allergic patients.
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Affiliation(s)
- Lauriana-Eunice Zbîrcea
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, Victor Babes University of Medicine and Pharmacy, 300041 Timisoara, Romania (L.H.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Maria-Roxana Buzan
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, Victor Babes University of Medicine and Pharmacy, 300041 Timisoara, Romania (L.H.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Manuela Grijincu
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, Victor Babes University of Medicine and Pharmacy, 300041 Timisoara, Romania (L.H.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Monica-Daniela Cotarcă
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, Victor Babes University of Medicine and Pharmacy, 300041 Timisoara, Romania (L.H.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Tudor-Paul Tamaș
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, Victor Babes University of Medicine and Pharmacy, 300041 Timisoara, Romania (L.H.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Laura Haidar
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, Victor Babes University of Medicine and Pharmacy, 300041 Timisoara, Romania (L.H.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Gabriela Tănasie
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, Victor Babes University of Medicine and Pharmacy, 300041 Timisoara, Romania (L.H.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Ioan Huțu
- Faculty of Veterinary Medicine, University of Life Sciences “King Mihai I of Romania”, 300645 Timișoara, Romania;
| | - Elijahu Babaev
- Vienna Competence Center, Biomay AG, 1090 Vienna, Austria
| | - Frank Stolz
- Vienna Competence Center, Biomay AG, 1090 Vienna, Austria
| | - Rudolf Valenta
- Center of Pathophysiology, Infectiology and Immunology, Department of Pathophysiology and Allergy Research, Division of Immunopathology, Medical University of Vienna, 1090 Vienna, Austria
- Laboratory for Immunopathology, Department of Clinical Immunology and Allergology, Sechenov First Moscow State Medical University, 119991 Moscow, Russia
- Karl Landsteiner University of Health Sciences, 3500 Krems, Austria
- NRC Institute of Immunology FMBA of Russia, 115478 Moscow, Russia
| | - Virgil Păunescu
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, Victor Babes University of Medicine and Pharmacy, 300041 Timisoara, Romania (L.H.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Carmen Panaitescu
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, Victor Babes University of Medicine and Pharmacy, 300041 Timisoara, Romania (L.H.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Kuan-Wei Chen
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
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Huang J, Tao H, Chen J, Shen Y, Lei J, Pan J, Yan C, Yan N. Structure-guided discovery of protein and glycan components in native mastigonemes. Cell 2024; 187:1733-1744.e12. [PMID: 38552612 DOI: 10.1016/j.cell.2024.02.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 01/07/2024] [Accepted: 02/27/2024] [Indexed: 04/02/2024]
Abstract
Mastigonemes, the hair-like lateral appendages lining cilia or flagella, participate in mechanosensation and cellular motion, but their constituents and structure have remained unclear. Here, we report the cryo-EM structure of native mastigonemes isolated from Chlamydomonas at 3.0 Å resolution. The long stem assembles as a super spiral, with each helical turn comprising four pairs of anti-parallel mastigoneme-like protein 1 (Mst1). A large array of arabinoglycans, which represents a common class of glycosylation in plants and algae, is resolved surrounding the type II poly-hydroxyproline (Hyp) helix in Mst1. The EM map unveils a mastigoneme axial protein (Mstax) that is rich in heavily glycosylated Hyp and contains a PKD2-like transmembrane domain (TMD). Mstax, with nearly 8,000 residues spanning from the intracellular region to the distal end of the mastigoneme, provides the framework for Mst1 assembly. Our study provides insights into the complexity of protein and glycan interactions in native bio-architectures.
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Affiliation(s)
- Junhao Huang
- Beijing Frontier Research Center for Biological Structures, State Key Laboratory of Membrane Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Hui Tao
- MOE Key Laboratory of Protein Sciences, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Jikun Chen
- MOE Key Laboratory of Protein Sciences, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Yang Shen
- Beijing Frontier Research Center for Biological Structures, State Key Laboratory of Membrane Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Jianlin Lei
- Beijing Frontier Research Center for Biological Structures, State Key Laboratory of Membrane Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Junmin Pan
- MOE Key Laboratory of Protein Sciences, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, China.
| | - Chuangye Yan
- Beijing Frontier Research Center for Biological Structures, State Key Laboratory of Membrane Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China.
| | - Nieng Yan
- Beijing Frontier Research Center for Biological Structures, State Key Laboratory of Membrane Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China; Institute of Bio-Architecture and Bio-Interactions (IBABI), Shenzhen Medical Academy of Research and Translation (SMART), Shenzhen, Guangdong 518107, China.
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Charoenkwan P, Chumnanpuen P, Schaduangrat N, Shoombuatong W. Accelerating the identification of the allergenic potential of plant proteins using a stacked ensemble-learning framework. J Biomol Struct Dyn 2024:1-13. [PMID: 38385478 DOI: 10.1080/07391102.2024.2318482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 02/08/2024] [Indexed: 02/23/2024]
Abstract
Plant-allergenic proteins (PAPs) have the potential to induce allergic reactions in certain individuals. While these proteins are generally innocuous for the majority of people, they can elicit an immune response in those with particular sensitivities. Thus, screening and prioritizing the allergenic potential of plant proteins is indispensable for the development of diagnostic tools, therapeutic interventions or medications to treat allergic reactions. However, investigating the allergenic potential of plant proteins based on experimental methods is costly and labour-intensive. Therefore, we develop StackPAP, a three-layer stacking ensemble framework for accurate large-scale identification of PAPs. In StackPAP, at the first layer, we conducted a comprehensive analysis of an extensive set of feature descriptors. Subsequently, we selected and fused five potential sequence-based feature descriptors, including amphiphilic pseudo-amino acid composition, dipeptide deviation from expected mean, amino acid composition, pseudo amino acid composition and dipeptide composition. Additionally, we applied an efficient genetic algorithm (GA-SAR) to determine informative feature sets. In the second layer, 12 powerful machine learning (ML) methods, in combination with all the informative feature sets, were employed to construct a pool of base classifiers. Finally, 13 potential base classifiers were selected using the GA-SAR method and combined to develop the final meta-classifier. Our experimental results revealed the promising prediction performance of StackPAP, with an accuracy, Matthew's correlation coefficient and AUC of 0.984, 0.969 and 0.993, respectively, as judged by the independent test dataset. In conclusion, both cross-validation and independent test results indicated the superior performance of StackPAP compared with several ML-based classifiers. To accelerate the identification of the allergenicity of plant proteins, we developed a user-friendly web server for StackPAP (https://pmlabqsar.pythonanywhere.com/StackPAP). We anticipate that StackPAP will be an efficient and useful tool for rapidly screening PAPs from a vast number of plant proteins.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Phasit Charoenkwan
- Modern Management and Information Technology, College of Arts, Media and Technology, Chiang Mai University, Thailand
| | - Pramote Chumnanpuen
- Department of Zoology, Faculty of Science, Kasetsart University, Bangkok, Thailand
- Omics Center for Agriculture, Bioresources, Food, and Health, Kasetsart University (OmiKU), Bangkok, Thailand
| | - Nalini Schaduangrat
- Center for Research Innovation and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand
| | - Watshara Shoombuatong
- Center for Research Innovation and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand
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Yin L, Zhang G, Zhou C, Ou Z, Qu B, Zhao H, Zuo E, Liu B, Wan F, Qian W. Chromosome-level genome of Ambrosia trifida provides insights into adaptation and the evolution of pollen allergens. Int J Biol Macromol 2024; 259:129232. [PMID: 38191104 DOI: 10.1016/j.ijbiomac.2024.129232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 12/22/2023] [Accepted: 01/02/2024] [Indexed: 01/10/2024]
Abstract
Ambrosia trifida (giant ragweed) is an invasive plant that can cause serious damage to natural ecosystems and severe respiratory allergies. However, the genomic basis of invasive adaptation and pollen allergens in Ambrosia species remain largely unknown. Here, we present a 1.66 Gb chromosome-scale reference genome for giant ragweed and identified multiple types of genome duplications, which are responsible for its rapid environmental adaptation and pollen development. The largest copies number and species-specific expansions of resistance-related gene families compared to Heliantheae alliance might contribute to resist stresses, pathogens and rapid adaptation. To extend the knowledge of evolutionary process of allergic pollen proteins, we predicted 26 and 168 potential pollen allergen candidates for giant ragweed and other Asteraceae plant species by combining machine learning and identity screening. Interestingly, we observed a specific tandemly repeated array for potential allergenic pectate lyases among Ambrosia species. Rapid evolutionary rates on putative pectate lyase allergens may imply a crucial role of nonsynonymous mutations on amino acid residues for plant biological function and allergenicity. Altogether, this study provides insight into the molecular ecological adaptation and putative pollen allergens prediction that will be helpful in promoting invasion genomic research and evolution of putative pollen allergy in giant ragweed.
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Affiliation(s)
- Lijuan Yin
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Guangzhong Zhang
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China; College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Chikai Zhou
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China; Key Laboratory of Livestock and Poultry Multi-omics of MARA, China
| | - Zhenghui Ou
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Bo Qu
- Liaoning Key Laboratory for Biological Invasions and Global Changes, Shenyang Agricultural University, Shenyang 110016, Liaoning Province, China
| | - Haoyu Zhao
- Key Laboratory of Integrated Pest Management on Crops in Southwest, Ministry of Agriculture, Institute of Plant Protection, Sichuan Academy of Agricultural Science, Chengdu 610066, China
| | - Erwei Zuo
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China; Key Laboratory of Livestock and Poultry Multi-omics of MARA, China
| | - Bo Liu
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China.
| | - Fanghao Wan
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China.
| | - Wanqiang Qian
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China.
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Grewling Ł, Ribeiro H, Antunes C, Apangu GP, Çelenk S, Costa A, Eguiluz-Gracia I, Galveias A, Gonzalez Roldan N, Lika M, Magyar D, Martinez-Bracero M, Ørby P, O'Connor D, Penha AM, Pereira S, Pérez-Badia R, Rodinkova V, Xhetani M, Šauliene I, Skjøth CA. Outdoor airborne allergens: Characterization, behavior and monitoring in Europe. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167042. [PMID: 37709071 DOI: 10.1016/j.scitotenv.2023.167042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 08/23/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023]
Abstract
Aeroallergens or inhalant allergens, are proteins dispersed through the air and have the potential to induce allergic conditions such as rhinitis, conjunctivitis, and asthma. Outdoor aeroallergens are found predominantly in pollen grains and fungal spores, which are allergen carriers. Aeroallergens from pollen and fungi have seasonal emission patterns that correlate with plant pollination and fungal sporulation and are strongly associated with atmospheric weather conditions. They are released when allergen carriers come in contact with the respiratory system, e.g. the nasal mucosa. In addition, due to the rupture of allergen carriers, airborne allergen molecules may be released directly into the air in the form of micronic and submicronic particles (cytoplasmic debris, cell wall fragments, droplets etc.) or adhered onto other airborne particulate matter. Therefore, aeroallergen detection strategies must consider, in addition to the allergen carriers, the allergen molecules themselves. This review article aims to present the current knowledge on inhalant allergens in the outdoor environment, their structure, localization, and factors affecting their production, transformation, release or degradation. In addition, methods for collecting and quantifying aeroallergens are listed and thoroughly discussed. Finally, the knowledge gaps, challenges and implications associated with aeroallergen analysis are described.
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Affiliation(s)
- Łukasz Grewling
- Laboratory of Aerobiology, Department of Systematic and Environmental Botany, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland.
| | - Helena Ribeiro
- Department of Geosciences, Environment and Spatial Plannings of the Faculty of Sciences, University of Porto and Earth Sciences Institute (ICT), Portugal
| | - Celia Antunes
- Department of Medical and Health Sciences, School of Health and Human Development & ICT-Institute of Earth Sciences, IIFA, University of Évora, 7000-671 Évora, Portugal
| | | | - Sevcan Çelenk
- Department of Biology, Faculty of Arts and Sciences, Bursa Uludag University, Bursa, Turkey
| | - Ana Costa
- Department of Medical and Health Sciences, School of Health and Human Development & ICT-Institute of Earth Sciences, IIFA, University of Évora, 7000-671 Évora, Portugal
| | - Ibon Eguiluz-Gracia
- Allergy Unit, Hospital Regional Universitario de Malaga, Malaga 29010, Spain
| | - Ana Galveias
- Department of Medical and Health Sciences, School of Health and Human Development & ICT-Institute of Earth Sciences, IIFA, University of Évora, 7000-671 Évora, Portugal
| | - Nestor Gonzalez Roldan
- Group of Biofunctional Metabolites and Structures, Priority Research Area Chronic Lung Diseases, Research Center Borstel, Leibniz Lung Center, Member of the German Center for Lung Research (DZL), Airway Research Center North (ARCN), Borstel, Germany; Pollen Laboratory, Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Mirela Lika
- Department of Biology, Faculty of Natural Sciences, University of Tirana, Tirana, Albania
| | - Donát Magyar
- National Center for Public Health and Pharmacy, Budapest, Hungary
| | | | - Pia Ørby
- Department of Environmental Science, Danish Big Data Centre for Environment and Health (BERTHA) Aarhus University, Aarhus, Denmark
| | - David O'Connor
- School of Chemical Sciences, Dublin City University, Dublin D09 E432, Ireland
| | - Alexandra Marchã Penha
- Water Laboratory, School of Sciences and Technology, ICT-Institute of Earth Sciences, IIFA, University of Évora. 7000-671 Évora, Portugal
| | - Sónia Pereira
- Department of Geosciences, Environment and Spatial Plannings of the Faculty of Sciences, University of Porto and Earth Sciences Institute (ICT), Portugal
| | - Rosa Pérez-Badia
- Institute of Environmental Sciences, University of Castilla-La Mancha, 45071 Toledo, Spain
| | | | - Merita Xhetani
- Department of Biology, Faculty of Natural Sciences, University of Tirana, Tirana, Albania
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Inaba K, Naito Y, Tachibana M, Toshima K, Takahashi D. Regioselective and Stereospecific β-Arabinofuranosylation by Boron-Mediated Aglycon Delivery. Angew Chem Int Ed Engl 2023; 62:e202307015. [PMID: 37394576 DOI: 10.1002/anie.202307015] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/27/2023] [Accepted: 06/30/2023] [Indexed: 07/04/2023]
Abstract
Regio- and stereoselective formation of the 1,2-cis-furanosidic linkage has been in great demand for efficient synthesis of biologically active natural glycosides. In this study, we developed a regioselective and β-stereospecific d-/l-arabinofuranosylation promoted by a boronic acid catalyst under mild conditions. The glycosylations proceeded smoothly for a variety of diols, triols, and unprotected sugar acceptors to give the corresponding β-arabinofuranosides (β-Arbf) in high yields with complete β-stereoselectivity and high regioselectivity. The regioselectivity was completely reversed depending on the optical isomerism of the donor used and was predictable a priori using predictive models. Mechanistic studies based on DFT calculations revealed that the present glycosylation occurs through a highly dissociative concerted SN i mechanism. The usefulness of the glycosylation method was demonstrated by the chemical synthesis of trisaccharide structures of arabinogalactan fragments.
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Affiliation(s)
- Kazuki Inaba
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Yuna Naito
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Mina Tachibana
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Kazunobu Toshima
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Daisuke Takahashi
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
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Cosi V, Gadermaier G. The Role of Defensins as Pollen and Food Allergens. Curr Allergy Asthma Rep 2023:10.1007/s11882-023-01080-3. [PMID: 37178263 PMCID: PMC10281898 DOI: 10.1007/s11882-023-01080-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2023] [Indexed: 05/15/2023]
Abstract
PURPOSE OF REVIEW Defensin-polyproline-linked proteins are relevant allergens in Asteraceae pollen. Depending on their prevalence and amount in the pollen source, they are potent allergens, as shown for the major mugwort pollen allergen Art v 1. Only a few allergenic defensins have been identified in plant foods, such as peanut and celery. This review provides an overview of structural and immunological features, IgE cross-reactivity, and diagnostic and therapeutic options regarding allergenic defensins. RECENT FINDINGS We present and critically review the allergenic relevance of pollen and food defensins. The recently identified Api g 7 from celeriac and other allergens potentially involved in Artemisia pollen-related food allergies are discussed and related to clinical severity and allergen stability. To specify Artemisia pollen-related food allergies, we propose the term "defensin-related food allergies" to account for defensin-polyproline-linked protein-associated food syndromes. There is increasing evidence that defensins are the causative molecules in several mugwort pollen-associated food allergies. A small number of studies have shown IgE cross-reactivity of Art v 1 with celeriac, horse chestnut, mango, and sunflower seed defensins, while the underlying allergenic molecule remains unknown in other mugwort pollen-associated food allergies. As these food allergies can cause severe allergic reactions, identification of allergenic food defensins and further clinical studies with larger patient cohorts are required. This will allow molecule-based allergy diagnosis and a better understanding of defensin-related food allergies to raise awareness of potentially severe food allergies due to primary sensitization to Artemisia pollen.
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Affiliation(s)
- Valentina Cosi
- Department of Biosciences and Medical Biology, Paris Lodron University Salzburg, Hellbrunnerstraße 34, 5020, Salzburg, Austria
| | - Gabriele Gadermaier
- Department of Biosciences and Medical Biology, Paris Lodron University Salzburg, Hellbrunnerstraße 34, 5020, Salzburg, Austria.
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索 爽, 马 婷, 王 洪, 王 也, 王 学. [Sensitization characteristics of ragweed pollen in Beijing area]. LIN CHUANG ER BI YAN HOU TOU JING WAI KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY, HEAD, AND NECK SURGERY 2023; 37:380-386. [PMID: 37138402 PMCID: PMC10495787 DOI: 10.13201/j.issn.2096-7993.2023.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 04/06/2023] [Indexed: 05/05/2023]
Abstract
Objective:To investigate the sensitization characteristics of ragweed pollen in patients with allergic rhinitis(AR) and(or) allergic asthma in Beijing area, and to provide basis for the prevention and treatment of ragweed pollen sensitized population. Methods:Patients with allergic rhinitis and/or asthma from January 2017 to December 2019 in the outpatient department of Allergy Department of Beijing Shijitan Hospital were retrospectively analyzed in this study. Skin prick test(SPT) was performed with ragweed pollen allergen reagents to compare different ages, genders and respiratory diseases allergen distribution, and to observe the sensitization characteristics of its population. All of the analyses were performed using SAS software version 9.4. Results:A total of 9 727 patients were enrolled in the end. The total positive rate of ragweed pollen SPT was 45.50%(4 426/9 727), the highest positive rate was 65.54% in 13-17 years old group; The positive rate of ragweed pollen SPT was 49.79% in allergic rhinitis combined with asthma patients, followed by 46.46% in allergic rhinitis patients, and the lowest rate was 19.42% in single allergic asthma patients. There were more females than males in both ragweed pollen sensitized and non-ragweed pollen sensitized groups(P<0.05), and the proportion was higher in 30-39 years old than in other age groups(P<0.05). Ragweed pollen sensitization was higher than non-ragweed pollen sensitization in the allergic rhinitis group(98.49% vs 94.76%, P<0.05). Ragweed pollen with other summer and autumn pollen allergens in patients with positive SPT, the top three were Chenopodium pollen, Humulus pollen and Artemisia grandis pollen, with positive rates of 90.42%, 89.63% and 85.40%, respectively. Ragweed combined with other pollen sensitization accounted for 99.57%(4 407/4 426). Allergic rhinitis was the main disease in patients sensitized with ragweed pollen alone or combined with other pollens, and there was no significant difference between the two groups(94.97% vs 98.50%, P>0.05). Conclusion:Ragweed pollen is highly sensitized in Beijing area, single ragweed pollen sensitization is rare, often combined with multiple pollen sensitization, and allergic rhinitis is the main disease.
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Affiliation(s)
- 爽 索
- 首都医科大学附属北京世纪坛医院变态反应科(北京,100038)Department of Allergy, Beijing Shijitan Hospital. Capital Medical University, Beijing, 100038, China
| | - 婷婷 马
- 首都医科大学附属北京世纪坛医院变态反应科(北京,100038)Department of Allergy, Beijing Shijitan Hospital. Capital Medical University, Beijing, 100038, China
| | - 洪田 王
- 首都医科大学附属北京世纪坛医院变态反应科(北京,100038)Department of Allergy, Beijing Shijitan Hospital. Capital Medical University, Beijing, 100038, China
| | - 也 王
- 中国医学科学院北京协和医学院群医学及公共卫生学院School of Population Medicine and Public Health, Chinese Academy of Medical Science and Peking Union Medical College
| | - 学艳 王
- 首都医科大学附属北京世纪坛医院变态反应科(北京,100038)Department of Allergy, Beijing Shijitan Hospital. Capital Medical University, Beijing, 100038, China
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10
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Buhner S, Schäuffele S, Giesbertz P, Demir IE, Zeller F, Traidl-Hoffmann C, Schemann M, Gilles S. Allergen-free extracts from birch, ragweed, and hazel pollen activate human and guinea-pig submucous and spinal sensory neurons. Neurogastroenterol Motil 2023:e14559. [PMID: 36989179 DOI: 10.1111/nmo.14559] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 01/16/2023] [Accepted: 02/24/2023] [Indexed: 03/30/2023]
Abstract
BACKGROUND Non-allergenic, low molecular weight components of pollen grains are suspected to trigger changes in gut functions, sometimes leading to inflammatory conditions. Based on extensive neuroimmune communication in the gut wall, we investigated the effects of aqueous pollen extracts (APE) on enteric and spinal sensory neurons. METHODS Using Ca2+ and fast potentiometric imaging, we recorded the responses of guinea-pig and human submucous and guinea-pig dorsal root ganglion (DRG) neurons to microejection of low (<3 kDa) and high (≥3 kDa) molecular weight APEs of birch, ragweed, and hazel. Histamine was determined pharmacologically and by mass spectrometry (LC-MS/MS). KEY RESULTS Birch APE<3kDa evoked strong [Ca+2 ]i signals in the vast majority of guinea-pig DRG neurons, and in guinea-pig and human enteric neurons. The effect of birch APE≥3kDa was much weaker. Fast neuroimaging in human enteric neurons revealed an instantaneous spike discharge after microejection of birch, ragweed, and hazel APE<3kDa [median (interquartile range) at 7.0 Hz (6.2/9.8), 5.7 Hz (4.4/7.1), and 8.4 Hz (4.3/12.5), respectively]. The percentage of responding neurons per ganglion were similar [birch 40.0% (33.3/100.0), ragweed 50.8% (34.4/85.6), and hazel 83.3% (57.1/100.0)]. A mixture of histamine receptor (H1-H3) blockers significantly reduced nerve activation evoked by birch and ragweed APEs<3kDa , but was ineffective on hazel. Histamine concentrations in ragweed, birch and hazel APE's < 3 kDa were 0.764, 0.047, and 0.013 μM, respectively. CONCLUSIONS Allergen-free APEs from birch, ragweed, and hazel evoked strong nerve activation. Altered nerve-immune signaling as a result of severe pollen exposure could be a pathophysiological feature of allergic and non-allergic gut inflammation.
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Affiliation(s)
- Sabine Buhner
- Chair of Human Biology, Technical University Munich, Freising, Germany
| | | | - Pieter Giesbertz
- Molecular Nutrition Unit, Technical University Munich, Freising, Germany
| | - Ihsan Ekin Demir
- University Hospital Rechts der Isar, Technical University Munich, Munich, Germany
| | - Florian Zeller
- Department of Surgery, Academic Hospital Freising, Freising, Germany
| | - Claudia Traidl-Hoffmann
- Environmental Medicine, Faculty of Medicine, University of Augsburg, Augsburg, Germany
- Institute of Environmental Medicine, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Christine Kühne Center for Allergy Research and Education (CK-Care), Davos, Switzerland
| | - Michael Schemann
- Chair of Human Biology, Technical University Munich, Freising, Germany
| | - Stefanie Gilles
- Environmental Medicine, Faculty of Medicine, University of Augsburg, Augsburg, Germany
- Institute of Environmental Medicine, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
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11
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Buzan M, Zbîrcea L, Gattinger P, Babaev E, Stolz F, Valenta R, Păunescu V, Panaitescu C, Chen K. Complex IgE sensitization patterns in ragweed allergic patients: Implications for diagnosis and specific immunotherapy. Clin Transl Allergy 2022; 12:e12179. [PMID: 35813977 PMCID: PMC9254219 DOI: 10.1002/clt2.12179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 05/11/2022] [Accepted: 06/26/2022] [Indexed: 11/21/2022] Open
Abstract
Background Ragweed (Ambrosia artemisiifolia) is one of the most important allergen sources, worldwide, causing severe respiratory allergic reactions in late summer and fall, in sensitized patients. Amb a 1 has been considered as the most important allergen in ragweed but 12 ragweed pollen allergens are known. The aim of our study was to investigate IgE reactivity profiles of ragweed allergic patients and to associate them with clinical symptoms. Methods IgE sensitization profiles from clinically well-characterized ragweed allergic patients (n = 150) were analyzed using immunoblotted ragweed pollen extract. Immunoblot inhibition experiments were performed with two Amb a 1 isoforms and CCD markers and basophil activation experiments were performed with IgE serum before and after depletion of Amb a 1-specific IgE. Results By IgE-immunoblotting 19 different IgE reactivity patterns with and without Amb a 1-sensitization were found. The majority of patients (>95%) suffered from rhino-conjunctivitis, around 60% reported asthma-like symptoms and about 25% had skin reactions. Patients with complex IgE sensitization profiles tended to have more clinical symptoms. Serum with and without Amb a 1-specific IgE induced basophil activation. Conclusions Ragweed pollen allergic patients exhibit complex IgE reactivity profiles to ragweed allergens including Amb a 1 isoforms and cross-reactive carbohydrates indicating the importance of Amb a 1 isoforms and additional allergens for diagnosis and allergen-specific immunotherapy of ragweed allergy.
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Affiliation(s)
- Maria‐Roxana Buzan
- Center of Immuno‐Physiology and Biotechnologies, Department of Functional SciencesVictor Babes University of Medicine and PharmacyTimisoaraRomania
- OncoGen CenterPius Brinzeu County Clinical Emergency HospitalTimisoaraRomania
| | - Lauriana‐Eunice Zbîrcea
- Center of Immuno‐Physiology and Biotechnologies, Department of Functional SciencesVictor Babes University of Medicine and PharmacyTimisoaraRomania
- OncoGen CenterPius Brinzeu County Clinical Emergency HospitalTimisoaraRomania
| | - Pia Gattinger
- Department of Pathophysiology and Allergy Research, Division of Immunopathology, Center of Pathophysiology, Infectiology and ImmunologyMedical University of ViennaViennaAustria
| | | | - Frank Stolz
- Biomay AGVienna Competence CenterViennaAustria
| | - Rudolf Valenta
- Department of Pathophysiology and Allergy Research, Division of Immunopathology, Center of Pathophysiology, Infectiology and ImmunologyMedical University of ViennaViennaAustria
- Laboratory for Immunopathology, Department of Clinical Immunology and AllergologySechenov First Moscow State Medical UniversityMoscowRussia
- Karl Landsteiner University of Health SciencesKremsAustria
- NRC Institute of Immunology FMBA of RussiaMoscowRussia
| | - Virgil Păunescu
- Center of Immuno‐Physiology and Biotechnologies, Department of Functional SciencesVictor Babes University of Medicine and PharmacyTimisoaraRomania
- OncoGen CenterPius Brinzeu County Clinical Emergency HospitalTimisoaraRomania
| | - Carmen Panaitescu
- Center of Immuno‐Physiology and Biotechnologies, Department of Functional SciencesVictor Babes University of Medicine and PharmacyTimisoaraRomania
- OncoGen CenterPius Brinzeu County Clinical Emergency HospitalTimisoaraRomania
| | - Kuan‐Wei Chen
- OncoGen CenterPius Brinzeu County Clinical Emergency HospitalTimisoaraRomania
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12
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Bohlender LL, Parsons J, Hoernstein SNW, Bangert N, Rodríguez-Jahnke F, Reski R, Decker EL. Unexpected Arabinosylation after Humanization of Plant Protein N-Glycosylation. Front Bioeng Biotechnol 2022; 10:838365. [PMID: 35252146 PMCID: PMC8894861 DOI: 10.3389/fbioe.2022.838365] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 01/28/2022] [Indexed: 02/03/2023] Open
Abstract
As biopharmaceuticals, recombinant proteins have become indispensable tools in medicine. An increasing demand, not only in quantity but also in diversity, drives the constant development and improvement of production platforms. The N-glycosylation pattern on biopharmaceuticals plays an important role in activity, serum half-life and immunogenicity. Therefore, production platforms with tailored protein N-glycosylation are of great interest. Plant-based systems have already demonstrated their potential to produce pharmaceutically relevant recombinant proteins, although their N-glycan patterns differ from those in humans. Plants have shown great plasticity towards the manipulation of their glycosylation machinery, and some have already been glyco-engineered in order to avoid the attachment of plant-typical, putatively immunogenic sugar residues. This resulted in complex-type N-glycans with a core structure identical to the human one. Compared to humans, plants lack the ability to elongate these N-glycans with β1,4-linked galactoses and terminal sialic acids. However, these modifications, which require the activity of several mammalian enzymes, have already been achieved for Nicotiana benthamiana and the moss Physcomitrella. Here, we present the first step towards sialylation of recombinant glycoproteins in Physcomitrella, human β1,4-linked terminal N-glycan galactosylation, which was achieved by the introduction of a chimeric β1,4-galactosyltransferase (FTGT). This chimeric enzyme consists of the moss α1,4-fucosyltransferase transmembrane domain, fused to the catalytic domain of the human β1,4-galactosyltransferase. Stable FTGT expression led to the desired β1,4-galactosylation. However, additional pentoses of unknown identity were also observed. The nature of these pentoses was subsequently determined by Western blot and enzymatic digestion followed by mass spectrometric analysis and resulted in their identification as α-linked arabinoses. Since a pentosylation of β1,4-galactosylated N-glycans was reported earlier, e.g., on recombinant human erythropoietin produced in glyco-engineered Nicotiana tabacum, this phenomenon is of a more general importance for plant-based production platforms. Arabinoses, which are absent in humans, may prevent the full humanization of plant-derived products. Therefore, the identification of these pentoses as arabinoses is important as it creates the basis for their abolishment to ensure the production of safe biopharmaceuticals in plant-based systems.
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Affiliation(s)
- Lennard L. Bohlender
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Juliana Parsons
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Freiburg, Germany
| | | | - Nina Bangert
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Fernando Rodríguez-Jahnke
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Freiburg, Germany
- Spemann Graduate School of Biology and Medicine (SGBM), University of Freiburg, Freiburg, Germany
| | - Ralf Reski
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Freiburg, Germany
- Spemann Graduate School of Biology and Medicine (SGBM), University of Freiburg, Freiburg, Germany
- Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Freiburg, Germany
| | - Eva L. Decker
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Freiburg, Germany
- *Correspondence: Eva L. Decker,
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13
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Platts‐Mills TA, Hilger C, Jappe U, van Hage M, Gadermaier G, Spillner E, Lidholm J, Keshavarz B, Aalberse RC, van Ree R, Goodman RE, Pomés A. Carbohydrate epitopes currently recognized as targets for IgE antibodies. Allergy 2021; 76:2383-2394. [PMID: 33655520 DOI: 10.1111/all.14802] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/17/2021] [Accepted: 02/26/2021] [Indexed: 12/11/2022]
Abstract
Until recently, glycan epitopes have not been documented by the WHO/IUIS Allergen Nomenclature Sub-Committee. This was in part due to scarce or incomplete information on these oligosaccharides, but also due to the widely held opinion that IgE to these epitopes had little or no relevance to allergic symptoms. Most IgE-binding glycans recognized up to 2008 were considered to be "classical" cross-reactive carbohydrate determinants (CCD) that occur in insects, some helminths and throughout the plant kingdom. Since 2008, the prevailing opinion on lack of clinical relevance of IgE-binding glycans has been subject to a reevaluation. This was because IgE specific for the mammalian disaccharide galactose-alpha-1,3-galactose (alpha-gal) was identified as a cause of delayed anaphylaxis to mammalian meat in the United States, an observation that has been confirmed by allergists in many parts of the world. Several experimental studies have shown that oligosaccharides with one or more terminal alpha-gal epitopes can be attached as a hapten to many different mammalian proteins or lipids. The classical CCDs also behave like haptens since they can be expressed on proteins from multiple species. This is the explanation for extensive in vitro cross-reactivity related to CCDs. Because of these developments, the Allergen Nomenclature Sub-Committee recently decided to include glycans as potentially allergenic epitopes in an adjunct section of its website (www.allergen.org). In this article, the features of the main glycan groups known to be involved in IgE recognition are revisited, and their characteristic structural, functional, and clinical features are discussed.
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Affiliation(s)
- Thomas A. Platts‐Mills
- WHO/IUIS Allergen Nomenclature Sub‐Committee
- Division of Allergy and Immunology University of Virginia Charlottesville Virginia USA
| | - Christiane Hilger
- WHO/IUIS Allergen Nomenclature Sub‐Committee
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
| | - Uta Jappe
- WHO/IUIS Allergen Nomenclature Sub‐Committee
- Division of Clinical and Molecular Allergology, Research Center Borstel AirwayResearch Center North (ARCN)German Center for Lung Research Borstel Germany
- Interdisciplinary Allergy Outpatient Clinic, Department of Internal Medicine and Pneumology University of Lübeck Lübeck Germany
| | - Marianne van Hage
- WHO/IUIS Allergen Nomenclature Sub‐Committee
- Department of Medicine Solna, Division of Immunology and Allergy Karolinska Institutet & Karolinska University Hospital Stockholm Sweden
| | - Gabriele Gadermaier
- WHO/IUIS Allergen Nomenclature Sub‐Committee
- Department of Biosciences Paris Lodron University of Salzburg Salzburg Austria
| | - Edzard Spillner
- WHO/IUIS Allergen Nomenclature Sub‐Committee
- Department of Biological and Chemical Engineering Aarhus University Denmark
| | - Jonas Lidholm
- WHO/IUIS Allergen Nomenclature Sub‐Committee
- Thermo Fisher Scientific Uppsala Sweden
| | - Behnam Keshavarz
- Division of Allergy and Immunology University of Virginia Charlottesville Virginia USA
| | - Rob C. Aalberse
- Department of Immunopathology Sanquin Amsterdam The Netherlands
| | - Ronald van Ree
- WHO/IUIS Allergen Nomenclature Sub‐Committee
- Departments of Experimental Immunology and of Otorhinolaryngology Amsterdam University Medical Centers, Academic Medical Center Amsterdam The Netherlands
| | - Richard E. Goodman
- WHO/IUIS Allergen Nomenclature Sub‐Committee
- Food Allergy Research & Resource Program University of Nebraska Lincoln Nebraska USA
| | - Anna Pomés
- WHO/IUIS Allergen Nomenclature Sub‐Committee
- Basic Research, Indoor Biotechnologies, Inc. Charlottesville Virginia USA
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14
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Petersen BL, MacAlister CA, Ulvskov P. Plant Protein O-Arabinosylation. FRONTIERS IN PLANT SCIENCE 2021; 12:645219. [PMID: 33815452 PMCID: PMC8012813 DOI: 10.3389/fpls.2021.645219] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 02/22/2021] [Indexed: 05/26/2023]
Abstract
A wide range of proteins with diverse functions in development, defense, and stress responses are O-arabinosylated at hydroxyprolines (Hyps) within distinct amino acid motifs of continuous stretches of Hyps, as found in the structural cell wall extensins, or at non-continuous Hyps as, for example, found in small peptide hormones and a variety of plasma membrane proteins involved in signaling. Plant O-glycosylation relies on hydroxylation of Prolines to Hyps in the protein backbone, mediated by prolyl-4-hydroxylase (P4H) which is followed by O-glycosylation of the Hyp C4-OH group by either galactosyltransferases (GalTs) or arabinofuranosyltranferases (ArafTs) yielding either Hyp-galactosylation or Hyp-arabinosylation. A subset of the P4H enzymes with putative preference to hydroxylation of continuous prolines and presumably all ArafT enzymes needed for synthesis of the substituted arabinose chains of one to four arabinose units, have been identified and functionally characterized. Truncated root-hair phenotype is one common denominator of mutants of Hyp formation and Hyp-arabinosylation glycogenes, which act on diverse groups of O-glycosylated proteins, e.g., the small peptide hormones and cell wall extensins. Dissection of different substrate derived effects may not be regularly feasible and thus complicate translation from genotype to phenotype. Recently, lack of proper arabinosylation on arabinosylated proteins has been shown to influence their transport/fate in the secretory pathway, hinting to an additional layer of functionality of O-arabinosylation. Here, we provide an update on the prevalence and types of O-arabinosylated proteins and the enzymatic machinery responsible for their modifications.
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Affiliation(s)
- Bent Larsen Petersen
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Cora A. MacAlister
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, United States
| | - Peter Ulvskov
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
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15
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Mócsai R, Göritzer K, Stenitzer D, Maresch D, Strasser R, Altmann F. Prolyl Hydroxylase Paralogs in Nicotiana benthamiana Show High Similarity With Regard to Substrate Specificity. FRONTIERS IN PLANT SCIENCE 2021; 12:636597. [PMID: 33737944 PMCID: PMC7960765 DOI: 10.3389/fpls.2021.636597] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 02/08/2021] [Indexed: 05/03/2023]
Abstract
Plant glycoproteins display a characteristic type of O-glycosylation where short arabinans or larger arabinogalactans are linked to hydroxyproline. The conversion of proline to 4-hydroxyproline is accomplished by prolyl-hydroxylases (P4Hs). Eleven putative Nicotiana benthamiana P4Hs, which fall in four homology groups, have been identified by homology searches using known Arabidopsis thaliana P4H sequences. One member of each of these groups has been expressed in insect cells using the baculovirus expression system and applied to synthetic peptides representing the O-glycosylated region of erythropoietin (EPO), IgA1, Art v 1 and the Arabidopsis thaliana glycoprotein STRUBBELIG. Unlike the situation in the moss Physcomitrella patens, where one particular P4H was mainly responsible for the oxidation of erythropoietin, the tobacco P4Hs exhibited rather similar activities, albeit with biased substrate preferences and preferred sites of oxidation. From a biotechnological viewpoint, this result means that silencing/knockout of a single P4H in N. benthamiana cannot be expected to result in the abolishment of the plant-specific oxidation of prolyl residues in a recombinant protein.
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Affiliation(s)
- Réka Mócsai
- Department of Chemistry, Institute of Biochemistry, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Kathrin Göritzer
- Department of Applied Genetics and Cell Biology, Institute of Plant Biotechnology and Cell Biology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - David Stenitzer
- Department of Chemistry, Institute of Biochemistry, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Daniel Maresch
- Department of Chemistry, Institute of Biochemistry, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Richard Strasser
- Department of Applied Genetics and Cell Biology, Institute of Plant Biotechnology and Cell Biology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Friedrich Altmann
- Department of Chemistry, Institute of Biochemistry, University of Natural Resources and Life Sciences, Vienna, Austria
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16
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Parisi K, Poon S, Renda RF, Sahota G, English J, Yalpani N, Bleackley MR, Anderson MA, van der Weerden NL. Improving the Digestibility of Plant Defensins to Meet Regulatory Requirements for Transgene Products in Crop Protection. FRONTIERS IN PLANT SCIENCE 2020; 11:1227. [PMID: 32922418 PMCID: PMC7456892 DOI: 10.3389/fpls.2020.01227] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 07/27/2020] [Indexed: 06/01/2023]
Abstract
Despite the use of chemical fungicides, fungal diseases have a major impact on the yield and quality of plant produce globally and hence there is a need for new approaches for disease control. Several groups have examined the potential use of antifungal plant defensins for plant protection and have produced transgenic plants expressing plant defensins with enhanced resistance to fungal disease. However, before they can be developed commercially, transgenic plants must pass a series of strict regulations to ensure that they are safe for human and animal consumption as well as the environment. One of the requirements is rapid digestion of the transgene protein in the gastrointestinal tract to minimize the risk of any potential allergic response. Here, we examine the digestibility of two plant defensins, NaD1 from Nicotiana alata and SBI6 from soybean, which have potent antifungal activity against major cereal pathogens. The native defensins were not digestible in simulated gastrointestinal fluid assays. Several modifications to the sequences enhanced the digestibility of the two small proteins without severely impacting their antifungal activity. However, these modified proteins did not accumulate as well as the native proteins when transiently expressed in planta, suggesting that the protease-resistant structure of plant defensins facilitates their stability in planta.
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Affiliation(s)
- Kathy Parisi
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, Bundoora, VIC, Australia
| | - Simon Poon
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, Bundoora, VIC, Australia
| | - Rosemary F. Renda
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, Bundoora, VIC, Australia
| | - Gurinder Sahota
- Department of Animal, Plant and Soil Sciences, School of Life Sciences, La Trobe University, Bundoora, VIC, Australia
| | - James English
- Maxygen LLC, Sunnyvale, CA, United States
- Corteva Agriscience, Agriculture Division of DowDuPont, Johnston, IA, United States
| | - Nasser Yalpani
- Corteva Agriscience, Agriculture Division of DowDuPont, Johnston, IA, United States
- Department of Biology, University of British Columbia, Kelowna, BC, Canada
| | - Mark R. Bleackley
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, Bundoora, VIC, Australia
| | - Marilyn A. Anderson
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, Bundoora, VIC, Australia
| | - Nicole L. van der Weerden
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, Bundoora, VIC, Australia
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17
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Wang W, Yin J, Wang X, Ma T, Lan T, Song Q, Guo Y. Relationship between serum inhibitory activity for IgE and efficacy of Artemisia pollen subcutaneous immunotherapy for allergic rhinitis: a preliminary self-controlled study. Allergy Asthma Clin Immunol 2020; 16:18. [PMID: 32158477 PMCID: PMC7057474 DOI: 10.1186/s13223-020-0416-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 02/25/2020] [Indexed: 01/18/2023] Open
Abstract
Background Biomarkers of clinical efficacy for subcutaneous immunotherapy (SCIT) on allergic rhinitis (AR) have not been identified yet. This study aims to assess the clinical relevance of serum inhibitory activity for IgE by the method of enzyme-linked immunosorbent facilitated antigen binding (ELIFAB) during SCIT for Artemisia-sensitized AR patients. Methods 19 AR patients were studied who had undergone Artemisia-specific SCIT for more than 8 months (19.68 months on average, ranging from 9 to 33 months). Peripheral bloods were collected before and after treatment. The serum inhibitory activity for IgE was tested by ELIFAB and the level of Artemisia-specific IgG4 (Artemisia-sIgG4) was determined by ELISA. Clinical improvement was evaluated based on the symptom scores and rescue medication use (SMS). The 2-tailed Wilcoxon signed-rank test and the Spearman rank test (two-tailed) were used to analyze data by using SPSS 20.0, with P values of less than 0.05 considered as significant. Results The SMS decreased significantly after SCIT (before: 12.79 ± 4.250, after: 6.11 ± 3.828, P = 0.000 < 0.01), the treatment was remarkably effective for 6 patients, effective for 10 and ineffective for 3, along with a total effective rate 84.21%. The serum inhibitory activity for IgE increased significantly after SCIT (P < 0.05) and was correlated with the levels of Artemisia-sIgG4 (r = − 0.501, P = 0.002 < 0.01). The levels of Artemisia-sIgG4 elevated dramatically after treatment (P < 0.01) and were related with the duration of treatment (r = 0.558, P = 0.000 < 0.01). But there was no relationship between clinical improvements and the serum inhibitory activity for IgE. Conclusions The serum inhibitory activity for IgE increased significantly after SCIT, however, there was no correlation between it and clinical improvements by statistics analysis. So whether the serum inhibitory activity for IgE can act as biomarker of efficacy for SCIT or not needs to be studied further.
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Affiliation(s)
- Wenping Wang
- 1Department of Otolaryngology, Head and Neck Surgery, Peking University Ninth School of Clinical Medicine, Beijing, China
| | - Jinshu Yin
- 1Department of Otolaryngology, Head and Neck Surgery, Peking University Ninth School of Clinical Medicine, Beijing, China.,2Department of Otolaryngology, Head and Neck Surgery, Capital Medical University Affiliated Beijing Shijitan Hospital, Beijing, China
| | - Xueyan Wang
- 3Department of Allergy, Capital Medical University Affiliated Beijing Shijitan Hospital, Beijing, China
| | - Tingting Ma
- 3Department of Allergy, Capital Medical University Affiliated Beijing Shijitan Hospital, Beijing, China
| | - Tianfei Lan
- 3Department of Allergy, Capital Medical University Affiliated Beijing Shijitan Hospital, Beijing, China
| | - Qingkun Song
- 4Department of Science and Technology, Capital Medical University Affiliated Beijing Shijitan Hospital, Beijing, China
| | - Yifan Guo
- 5Department of General Surgery, Peking University Ninth School of Clinical Medicine, Beijing, China
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Seifert GJ. On the Potential Function of Type II Arabinogalactan O-Glycosylation in Regulating the Fate of Plant Secretory Proteins. FRONTIERS IN PLANT SCIENCE 2020; 11:563735. [PMID: 33013983 PMCID: PMC7511660 DOI: 10.3389/fpls.2020.563735] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 08/24/2020] [Indexed: 05/04/2023]
Abstract
In a plant-specific mode of protein glycosylation, various sugars and glycans are attached to hydroxyproline giving rise to a variety of diverse O-glycoproteins. The sub-family of arabinogalactan proteins is implicated in a multitude of biological functions, however, the mechanistic role of O-glycosylation on AGPs by type II arabinogalactans is largely elusive. Some models suggest roles of the O-glycans such as in ligand-receptor interactions and as localized calcium ion store. Structurally different but possibly analogous types of protein O-glycosylation exist in animal and yeast models and roles for O-glycans were suggested in determining the fate of O-glycoproteins by affecting intracellular sorting or proteolytic activation and degradation. At present, only few examples exist that describe how the fate of artificial and endogenous arabinogalactan proteins is affected by O-glycosylation with type II arabinogalactans. In addition to other roles, these glycans might act as a molecular determinant for cellular localization and protein lifetime of many endogenous proteins.
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Pablos I, Egger M, Vejvar E, Reichl V, Briza P, Zennaro D, Rafaiani C, Pickl W, Bohle B, Mari A, Ferreira F, Gadermaier G. Similar Allergenicity to Different Artemisia Species Is a Consequence of Highly Cross-Reactive Art v 1-Like Molecules. ACTA ACUST UNITED AC 2019; 55:medicina55080504. [PMID: 31434264 PMCID: PMC6723817 DOI: 10.3390/medicina55080504] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 11/16/2022]
Abstract
Background and objectives: Pollens of weeds are relevant elicitors of type I allergies. While many Artemisia species occur worldwide, allergy research so far has only focused on Artemisia vulgaris. We aimed to characterize other prevalent Artemisia species regarding their allergen profiles. Materials and Methods: Aqueous extracts of pollen from seven Artemisia species were characterized by gel electrophoresis and ELISA using sera from mugwort pollen-allergic patients (n = 11). The cDNA sequences of defensin–proline-linked proteins (DPLPs) were obtained, and purified proteins were tested in a competition ELISA, in rat basophil mediator release assays, and for activation of Jurkat T cells transduced with an Art v 1-specific TCR. IgE cross-reactivity to other allergens was evaluated using ImmunoCAP and ISAC. Results: The protein patterns of Artemisia spp. pollen extracts were similar in gel electrophoresis, with a major band at 24 kDa corresponding to DPLPs, like the previously identified Art v 1. Natural Art v 1 potently inhibited IgE binding to immobilized pollen extracts. Six novel Art v 1 homologs with high sequence identity and equivalent IgE reactivity were identified and termed Art ab 1, Art an 1, Art c 1, Art f 1, Art l 1, and Art t 1. All proteins triggered mediator release and cross-reacted at the T cell level. The Artemisia extracts contained additional IgE cross-reactive molecules from the nonspecific lipid transfer protein, pectate lyase, profilin, and polcalcin family. Conclusions: Our findings demonstrate that DPLPs in various Artemisia species have high allergenic potential. Therefore, related Artemisia species need to be considered to be allergen elicitors, especially due to the consideration of potential geographic expansion due to climatic changes.
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Affiliation(s)
- Isabel Pablos
- Department of Biosciences, University of Salzburg, 5020 Salzburg, Austria
| | - Matthias Egger
- Department of Biosciences, University of Salzburg, 5020 Salzburg, Austria
| | - Eva Vejvar
- Department of Biosciences, University of Salzburg, 5020 Salzburg, Austria
| | - Victoria Reichl
- Institute of Immunology, Center for Pathophysiology, Infection and Immunology, Medical University of Vienna, 1090 Vienna, Austria
| | - Peter Briza
- Department of Biosciences, University of Salzburg, 5020 Salzburg, Austria
| | - Danila Zennaro
- Associated Centers for Molecular Allergology, 04100 Rome, Italy
- Center for Molecular Allergology, IDI-IRCCS, 00167 Rome, Italy
| | - Chiara Rafaiani
- Associated Centers for Molecular Allergology, 04100 Rome, Italy
- Center for Molecular Allergology, IDI-IRCCS, 00167 Rome, Italy
| | - Winfried Pickl
- Institute of Immunology, Center for Pathophysiology, Infection and Immunology, Medical University of Vienna, 1090 Vienna, Austria
| | - Barbara Bohle
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria
| | - Adriano Mari
- Associated Centers for Molecular Allergology, 04100 Rome, Italy
- Center for Molecular Allergology, IDI-IRCCS, 00167 Rome, Italy
| | - Fatima Ferreira
- Department of Biosciences, University of Salzburg, 5020 Salzburg, Austria
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Finkina EI, Melnikova DN, Bogdanov IV, Ovchinnikova TV. Peptides of the Innate Immune System of Plants. Part II. Biosynthesis, Biological Functions, and Possible Practical Applications. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2019. [DOI: 10.1134/s1068162019020043] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Finkina EI, Melnikova DN, Bogdanov IV, Ovchinnikova TV. Peptides of the Innate Immune System of Plants. Part I. Structure, Biological Activity, and Mechanisms of Action. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2019. [DOI: 10.1134/s1068162019010060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Sierra-Heredia C, North M, Brook J, Daly C, Ellis AK, Henderson D, Henderson SB, Lavigne É, Takaro TK. Aeroallergens in Canada: Distribution, Public Health Impacts, and Opportunities for Prevention. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:E1577. [PMID: 30044421 PMCID: PMC6121311 DOI: 10.3390/ijerph15081577] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 07/04/2018] [Accepted: 07/18/2018] [Indexed: 12/17/2022]
Abstract
Aeroallergens occur naturally in the environment and are widely dispersed across Canada, yet their public health implications are not well-understood. This review intends to provide a scientific and public health-oriented perspective on aeroallergens in Canada: their distribution, health impacts, and new developments including the effects of climate change and the potential role of aeroallergens in the development of allergies and asthma. The review also describes anthropogenic effects on plant distribution and diversity, and how aeroallergens interact with other environmental elements, such as air pollution and weather events. Increased understanding of the relationships between aeroallergens and health will enhance our ability to provide accurate information, improve preventive measures and provide timely treatments for affected populations.
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Affiliation(s)
| | - Michelle North
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 3H7, Canada.
- Department of Biomedical & Molecular Sciences and Division of Allergy & Immunology, Department of Medicine, Queen's University, Kingston, ON K7L 3N6, Canada.
- Allergy Research Unit, Kingston General Hospital, Kingston, ON K7L 2V7, Canada.
| | - Jeff Brook
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON M3H 5T4, Canada.
| | - Christina Daly
- Air Quality Health Index, Health Canada, Ottawa, ON K1A 0K9, Canada.
| | - Anne K Ellis
- Department of Biomedical & Molecular Sciences and Division of Allergy & Immunology, Department of Medicine, Queen's University, Kingston, ON K7L 3N6, Canada.
- Allergy Research Unit, Kingston General Hospital, Kingston, ON K7L 2V7, Canada.
| | - Dave Henderson
- Health and Air Quality Services, Environment and Climate Change Canada, Gatineau, QC K1A 0H3, Canada.
| | - Sarah B Henderson
- Environmental Health Services, BC Centre for Disease Control, Vancouver, BC V5Z 4R4, Canada.
- School of Population and Public Health, University of British Columbia, Vancouver, BC V6T 1Z3, Canada.
| | - Éric Lavigne
- Air Health Science Division, Health Canada, Ottawa, ON K1A 0K9, Canada.
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, ON K1G 5Z3, Canada.
| | - Tim K Takaro
- Faculty of Health Sciences, Simon Fraser University, Burnaby, BC V5A 1S6, Canada.
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Finkina EI, Ovchinnikova TV. Plant Defensins: Structure, Functions, Biosynthesis, and the Role in the Immune Response. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2018. [DOI: 10.1134/s1068162018030056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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24
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Chen KW, Marusciac L, Tamas PT, Valenta R, Panaitescu C. Ragweed Pollen Allergy: Burden, Characteristics, and Management of an Imported Allergen Source in Europe. Int Arch Allergy Immunol 2018; 176:163-180. [PMID: 29788026 DOI: 10.1159/000487997] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 02/22/2018] [Indexed: 12/30/2022] Open
Abstract
Ambrosia artemisiifolia, also known as common or short ragweed, is an invasive annual flowering herbaceous plant that has its origin in North America. Nowadays, ragweed can be found in many areas worldwide. Ragweed pollen is known for its high potential to cause type I allergic reactions in late summer and autumn and represents a major health problem in America and several countries in Europe. Climate change and urbanization, as well as long distance transport capacity, enhance the spread of ragweed pollen. Therefore ragweed is becoming domestic in non-invaded areas which in turn will increase the sensitization rate. So far 11 ragweed allergens have been described and, according to IgE reactivity, Amb a 1 and Amb a 11 seem to be major allergens. Sensitization rates of the other allergens vary between 10 and 50%. Most of the allergens have already been recombinantly produced, but most of them have not been characterized regarding their allergenic activity, therefore no conclusion on the clinical relevance of all the allergens can be made, which is important and necessary for an accurate diagnosis. Pharmacotherapy is the most common treatment for ragweed pollen allergy but fails to impact on the course of allergy. Allergen-specific immunotherapy (AIT) is the only causative and disease-modifying treatment of allergy with long-lasting effects, but currently it is based on the administration of ragweed pollen extract or Amb a 1 only. In order to improve ragweed pollen AIT, new strategies are required with higher efficacy and safety.
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Affiliation(s)
- Kuan-Wei Chen
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, Timisoara, Romania.,Division of Immunopathology, Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - Laura Marusciac
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, Timisoara, Romania.,Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
| | - Paul Tudor Tamas
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, Timisoara, Romania.,Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
| | - Rudolf Valenta
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - Carmen Panaitescu
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, Timisoara, Romania.,Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
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Cross-sensitization to Artemisia and Ambrosia pollen allergens in an area located outside of the current distribution range of Ambrosia. Postepy Dermatol Alergol 2018; 35:83-89. [PMID: 29599676 PMCID: PMC5872248 DOI: 10.5114/ada.2018.73167] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 11/23/2016] [Indexed: 11/18/2022] Open
Abstract
Introduction The role of long-distance transported (LDT) Ambrosia pollen in inducing new sensitization and affecting sensitization rates in Artemisia-sensitized patients is unclear. Aim The aim of this study was to estimate the degree of cross-sensitization to Ambrosia/Artemisia allergens in citizens of Poznan (Western Poland). This area is covered by extensive Artemisia populations but does not currently have local Ambrosia populations. Material and methods Sera of 119 patients were tested by fluoroenzyme immunoassay (CAP-FEIA system) against pollen allergen extracts of Artemisia vulgaris and Ambrosia artemisiifolia, an allergenic component of A. vulgaris (nArt v 1), and an allergenic component of A. artemisiifolia (nAmb a 1). Skin prick tests (SPTs, n = 86) were performed with pollen allergen extracts of A. vulgaris and A. artemisiifolia. Artemisia and Ambrosia pollen in ambient air was collected (1996–2013) by a Hirst type volumetric trap sited at roof level (33 m). Results The SPT showed that the prevalence of sensitization to Ambrosia and Artemisia pollen exceeded 3.5%, and 10.5%, respectively. The measurements of IgE in blood serum (CAP-FEIA) revealed that among Ambrosia-sensitized patients 90.1% (20/22 patients) were concomitantly sensitized to Artemisia. 59.1% (13/22) of these patients reacted to nArt v 1, suggesting primary sensitization to Artemisia pollen. Only 2 (9.1%) patients were mono-sensitized to Ambrosia pollen extract, but surprisingly not to nAmb a 1. Conclusions The LDT Ambrosia pollen had a negligible effect on the rate of sensitization to Ambrosia allergens in Poznan and did not increase the prevalence of sensitization to Artemisia pollen in this region. However, the majority of patients showing hypersensitization to Artemisia pollen might also present symptoms during elevated episodes of LDT of Ambrosia pollen.
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Pablos I, Eichhorn S, Machado Y, Briza P, Neunkirchner A, Jahn-Schmid B, Wildner S, Soh WT, Ebner C, Park JW, Pickl WF, Arora N, Vieths S, Ferreira F, Gadermaier G. Distinct epitope structures of defensin-like proteins linked to proline-rich regions give rise to differences in their allergenic activity. Allergy 2018; 73:431-441. [PMID: 28960341 PMCID: PMC5771466 DOI: 10.1111/all.13298] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2017] [Indexed: 01/17/2023]
Abstract
Background Art v 1, Amb a 4, and Par h 1 are allergenic defensin‐polyproline–linked proteins present in mugwort, ragweed, and feverfew pollen, respectively. We aimed to investigate the physicochemical and immunological features underlying the different allergenic capacities of those allergens. Methods Recombinant defensin‐polyproline–linked proteins were expressed in E. coli and physicochemically characterized in detail regarding identity, secondary structure, and aggregation status. Allergenic activity was assessed by mediator releases assay, serum IgE reactivity, and IgE inhibition ELISA using sera of patients from Austria, Canada, and Korea. Endolysosomal protein degradation and T‐cell cross‐reactivity were studied in vitro. Results Despite variations in the proline‐rich region, similar secondary structure elements were observed in the defensin‐like domains. Seventy‐four percent and 52% of the Austrian and Canadian patients reacted to all three allergens, while Korean patients were almost exclusively sensitized to Art v 1. This was reflected by IgE inhibition assays demonstrating high cross‐reactivity for Austrian, medium for Canadian, and low for Korean sera. In a subgroup of patients, IgE reactivity toward structurally altered Amb a 4 and Par h 1 was not changed suggesting involvement of linear epitopes. Immunologically relevant endolysosomal stability of the defensin‐like domain was limited to Art v 1 and no T‐cell cross‐reactivity with Art v 125‐36 was observed. Conclusions Despite structural similarity, different IgE‐binding profiles and proteolytic processing impacted the allergenic capacity of defensin‐polyproline–linked molecules. Based on the fact that Amb a 4 demonstrated distinct IgE‐binding epitopes, we suggest inclusion in molecule‐based allergy diagnosis.
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Affiliation(s)
- I. Pablos
- Division of Allergy and Immunology; Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - S. Eichhorn
- Division of Allergy and Immunology; Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - Y. Machado
- Division of Allergy and Immunology; Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - P. Briza
- Division of Allergy and Immunology; Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - A. Neunkirchner
- Center for Pathophysiology, Infectiology and Immunology; Institute of Immunology; Medical University of Vienna; Vienna Austria
| | - B. Jahn-Schmid
- Department of Pathophysiology and Allergy Research; Medical University of Vienna; Vienna Austria
| | - S. Wildner
- Division of Allergy and Immunology; Department of Molecular Biology; University of Salzburg; Salzburg Austria
- Christian Doppler Laboratory for Biosimilar Characterization; University of Salzburg; Salzburg Austria
| | - W. T. Soh
- Division of Allergy and Immunology; Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - C. Ebner
- Allergy Clinic Reumannplatz; Vienna Austria
| | - J.-W. Park
- Department of Internal Medicine and Institute of Allergy; Yonsei University College of Medicine; Seoul Korea
| | - W. F. Pickl
- Center for Pathophysiology, Infectiology and Immunology; Institute of Immunology; Medical University of Vienna; Vienna Austria
| | - N. Arora
- Allergy and Immunology Section; CSIR-Institute of Genomic and Integrative Biology; Delhi India
| | - S. Vieths
- Division of Allergology; Paul-Ehrlich-Institut; Langen Germany
| | - F. Ferreira
- Division of Allergy and Immunology; Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - G. Gadermaier
- Division of Allergy and Immunology; Department of Molecular Biology; University of Salzburg; Salzburg Austria
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ANALYSIS OF SENSITIZATION FEATURES TO WEED POLLEN AND EFFICACY OF ALLERGEN IMMUNOTHERAPY IN PATIENTS OF THE CENTRAL AND WESTERN REGIONS IN UKRAINE. WORLD OF MEDICINE AND BIOLOGY 2018. [DOI: 10.26724/2079-8334-2018-4-66-56-62] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Pablos I, Eichhorn S, Briza P, Asam C, Gartner U, Wolf M, Ebner C, Bohle B, Arora N, Vieths S, Ferreira F, Gadermaier G. Proteomic profiling of the weed feverfew, a neglected pollen allergen source. Sci Rep 2017; 7:6049. [PMID: 28729676 PMCID: PMC5519751 DOI: 10.1038/s41598-017-06213-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 06/08/2017] [Indexed: 11/10/2022] Open
Abstract
Feverfew (Parthenium hysterophorus), an invasive weed from the Asteraceae family, has been reported as allergen source. Despite its relevance, knowledge of allergens is restricted to a partial sequence of a hydroxyproline-rich glycoprotein. We aimed to obtain the entire sequence for recombinant production and characterize feverfew pollen using proteomics and immunological assays. Par h 1, a defensin-proline fusion allergen was obtained by cDNA cloning and recombinantly produced in E. coli. Using two complementary proteomic strategies, a total of 258 proteins were identified in feverfew pollen among those 47 proteins belonging to allergenic families. Feverfew sensitized patients’ sera from India revealed IgE reactivity with a pectate lyase, PR-1 protein and thioredoxin in immonoblot. In ELISA, recombinant Par h 1 was recognized by 60 and 40% of Austrian and Indian sera, respectively. Inhibition assays demonstrated the presence of IgE cross-reactive Par h 1, pectate lyase, lipid-transfer protein, profilin and polcalcin in feverfew pollen. This study reveals significant data on the allergenic composition of feverfew pollen and makes recombinant Par h 1 available for cross-reactivity studies. Feverfew might become a global player in weed pollen allergy and inclusion of standardized extracts in routine allergy diagnosis is suggested in exposed populations.
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Affiliation(s)
- Isabel Pablos
- University of Salzburg, Department of Molecular Biology, Division of Allergy and Immunology, Salzburg, Austria
| | - Stephanie Eichhorn
- University of Salzburg, Department of Molecular Biology, Division of Allergy and Immunology, Salzburg, Austria
| | - Peter Briza
- University of Salzburg, Department of Molecular Biology, Division of Allergy and Immunology, Salzburg, Austria
| | - Claudia Asam
- University of Salzburg, Department of Molecular Biology, Division of Allergy and Immunology, Salzburg, Austria
| | - Ulrike Gartner
- University of Salzburg, Department of Ecology and Evolution, Salzburg, Austria
| | - Martin Wolf
- University of Salzburg, Department of Molecular Biology, Division of Allergy and Immunology, Salzburg, Austria
| | | | - Barbara Bohle
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - Naveen Arora
- CSIR-Institute of Genomic and Integrative Biology, Allergy and Immunology Section, Delhi, India
| | - Stefan Vieths
- Paul-Ehrlich-Institut, Federal Institute for Vaccines and Biomedicines, Langen, Germany
| | - Fatima Ferreira
- University of Salzburg, Department of Molecular Biology, Division of Allergy and Immunology, Salzburg, Austria
| | - Gabriele Gadermaier
- University of Salzburg, Department of Molecular Biology, Division of Allergy and Immunology, Salzburg, Austria.
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Zhao F, Durner J, Winkler JB, Traidl-Hoffmann C, Strom TM, Ernst D, Frank U. Pollen of common ragweed (Ambrosia artemisiifolia L.): Illumina-based de novo sequencing and differential transcript expression upon elevated NO 2/O 3. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 224:503-514. [PMID: 28284545 DOI: 10.1016/j.envpol.2017.02.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 12/15/2016] [Accepted: 02/14/2017] [Indexed: 05/28/2023]
Abstract
Common ragweed (Ambrosia artemisiifolia L.) is a highly allergenic annual ruderal plant and native to Northern America, but now also spreading across Europe. Air pollution and climate change will not only affect plant growth, pollen production and duration of the whole pollen season, but also the amount of allergenic encoding transcripts and proteins of the pollen. The objective of this study was to get a better understanding of transcriptional changes in ragweed pollen upon NO2 and O3 fumigation. This will also contribute to a systems biology approach to understand the reaction of the allergenic pollen to air pollution and climate change. Ragweed plants were grown in climate chambers under controlled conditions and fumigated with enhanced levels of NO2 and O3. Illumina sequencing and de novo assembly revealed significant differentially expressed transcripts, belonging to different gene ontology (GO) terms that were grouped into biological process and molecular function. Transcript levels of the known Amb a ragweed encoding allergens were clearly up-regulated under elevated NO2, whereas the amount of allergen encoding transcripts was more variable under elevated O3 conditions. Moreover transcripts encoding allergen known from other plants could be identified. The transcriptional changes in ragweed pollen upon elevated NO2 fumigation indicates that air pollution will alter the transcriptome of the pollen. The changed levels of allergenic encoding transcripts may have an influence on the total allergenic potential of ragweed pollen.
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Affiliation(s)
- Feng Zhao
- Institute of Biochemical Plant Pathology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.
| | - Jörg Durner
- Institute of Biochemical Plant Pathology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany; Biochemical Plant Pathology, Technische Universität München, Center of Life and Food Sciences Weihenstephan, Freising-Weihenstephan, Germany.
| | - J Barbro Winkler
- Research Unit Environmental Simulation, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.
| | - Claudia Traidl-Hoffmann
- Institute of Environmental Medicine, UNIKA-T, Augsburg, Germany; CK-CARE, Christine Kühne - Center for Allergy Research and Education, Davos-Wolfgang, Switzerland.
| | - Tim-Matthias Strom
- Institute of Human Genetics, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.
| | - Dieter Ernst
- Institute of Biochemical Plant Pathology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany; CK-CARE, Christine Kühne - Center for Allergy Research and Education, Davos-Wolfgang, Switzerland.
| | - Ulrike Frank
- Institute of Biochemical Plant Pathology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany; CK-CARE, Christine Kühne - Center for Allergy Research and Education, Davos-Wolfgang, Switzerland.
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Barton JS, Schomacker R. Comparative protein profiles of the Ambrosia plants. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2017; 1865:633-639. [PMID: 28315734 DOI: 10.1016/j.bbapap.2017.03.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 02/22/2017] [Accepted: 03/14/2017] [Indexed: 12/17/2022]
Abstract
Ragweed pollen is primarily responsible for the hay fever allergies of sufferers throughout the world. A proteome study of three ragweed plants (Ambrosia artemisiifolia, Ambrosia trifida, and Ambrosia psilostachya) was undertaken to document and compare their protein profiles. Proteins extracted from the pollen of the three plants were subjected to one dimensional electrophoresis followed by tandem liquid chromatography-mass spectroscopy. Peptide sequence mapping permitted discovery of proteins not previously reported for all three plants and 45% of the identified proteins were shared by all three of them. Application of stringent criteria revealed not only a majority of known allergens for short ragweed but also allergens not previously reported for the other two plants. Additionally, potentially allergy inducing enolases are reported for the three plants. These results suggest that all three ragweed plants could contribute to the allergy malady.
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Affiliation(s)
- Janice S Barton
- Department of Chemistry, Washburn University, 1700 S College Avenue, Topeka, KS 66621, United States.
| | - Rachel Schomacker
- Department of Chemistry, Washburn University, 1700 S College Avenue, Topeka, KS 66621, United States
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Ihsan MZ, Ahmad SJN, Shah ZH, Rehman HM, Aslam Z, Ahuja I, Bones AM, Ahmad JN. Gene Mining for Proline Based Signaling Proteins in Cell Wall of Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2017; 8:233. [PMID: 28289422 PMCID: PMC5326801 DOI: 10.3389/fpls.2017.00233] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 02/07/2017] [Indexed: 05/29/2023]
Abstract
The cell wall (CW) as a first line of defense against biotic and abiotic stresses is of primary importance in plant biology. The proteins associated with cell walls play a significant role in determining a plant's sustainability to adverse environmental conditions. In this work, the genes encoding cell wall proteins (CWPs) in Arabidopsis were identified and functionally classified using geneMANIA and GENEVESTIGATOR with published microarrays data. This yielded 1605 genes, out of which 58 genes encoded proline-rich proteins (PRPs) and glycine-rich proteins (GRPs). Here, we have focused on the cellular compartmentalization, biological processes, and molecular functioning of proline-rich CWPs along with their expression at different plant developmental stages. The mined genes were categorized into five classes on the basis of the type of PRPs encoded in the cell wall of Arabidopsis thaliana. We review the domain structure and function of each class of protein, many with respect to the developmental stages of the plant. We have then used networks, hierarchical clustering and correlations to analyze co-expression, co-localization, genetic, and physical interactions and shared protein domains of these PRPs. This has given us further insight into these functionally important CWPs and identified a number of potentially new cell-wall related proteins in A. thaliana.
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Affiliation(s)
- Muhammad Z. Ihsan
- Cholistan Institute of Desert Studies, The Islamia University BahawalpurBahawalpur, Pakistan
| | - Samina J. N. Ahmad
- Plant Stress Physiology and Molecular Biology Lab, Department of Botany, University of Agriculture FaisalabadFaisalabad, Pakistan
- Integrated Genomics Cellular Developmental and Biotechnology Lab, Department of Entomology, University of Agriculture FaisalabadFaisalabad, Pakistan
| | - Zahid Hussain Shah
- Department of Arid Land Agriculture, Faculty of Meteorology, King Abdulaziz UniversityJeddah, Saudi Arabia
| | - Hafiz M. Rehman
- Department of Electronic and Biomedical Engineering, Chonnam National UniversityGwangju, South Korea
| | - Zubair Aslam
- Department of Agronomy, University of Agriculture FaisalabadFaisalabad, Pakistan
| | - Ishita Ahuja
- Department of Biology, Norwegian University of Science and TechnologyTrondheim, Norway
| | - Atle M. Bones
- Department of Biology, Norwegian University of Science and TechnologyTrondheim, Norway
| | - Jam N. Ahmad
- Plant Stress Physiology and Molecular Biology Lab, Department of Botany, University of Agriculture FaisalabadFaisalabad, Pakistan
- Integrated Genomics Cellular Developmental and Biotechnology Lab, Department of Entomology, University of Agriculture FaisalabadFaisalabad, Pakistan
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Smiljanic K, Apostolovic D, Trifunovic S, Ognjenovic J, Perusko M, Mihajlovic L, Burazer L, van Hage M, Cirkovic Velickovic T. Subpollen particles are rich carriers of major short ragweed allergens and NADH dehydrogenases: quantitative proteomic and allergomic study. Clin Exp Allergy 2017; 47:815-828. [DOI: 10.1111/cea.12874] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 11/23/2016] [Accepted: 11/27/2016] [Indexed: 01/01/2023]
Affiliation(s)
- K. Smiljanic
- Faculty of Chemistry; Centre of Excellence for Molecular Food Sciences; University of Belgrade; Belgrade Serbia
| | - D. Apostolovic
- Immunology and Allergy Unit; Department of Medicine Solna; Karolinska Institute and University Hospital; Stockholm Sweden
| | - S. Trifunovic
- Faculty of Chemistry; Centre of Excellence for Molecular Food Sciences; University of Belgrade; Belgrade Serbia
| | - J. Ognjenovic
- Faculty of Chemistry; Centre of Excellence for Molecular Food Sciences; University of Belgrade; Belgrade Serbia
- Department of Biochemistry and Molecular Genetics; University of Illinois at Chicago; Chicago IL USA
| | - M. Perusko
- Faculty of Chemistry; Centre of Excellence for Molecular Food Sciences; University of Belgrade; Belgrade Serbia
| | - L. Mihajlovic
- Faculty of Chemistry; Centre of Excellence for Molecular Food Sciences; University of Belgrade; Belgrade Serbia
| | - L. Burazer
- Institute of Immunology, Virology and Sera Production; Torlak Belgrade Serbia
| | - M. van Hage
- Immunology and Allergy Unit; Department of Medicine Solna; Karolinska Institute and University Hospital; Stockholm Sweden
| | - T. Cirkovic Velickovic
- Faculty of Chemistry; Centre of Excellence for Molecular Food Sciences; University of Belgrade; Belgrade Serbia
- Ghent University Global Campus; Incheon South Korea
- Faculty of Bioscience Engineering; Ghent University; Ghent Belgium
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van Teeseling MCF, Maresch D, Rath CB, Figl R, Altmann F, Jetten MSM, Messner P, Schäffer C, van Niftrik L. The S-Layer Protein of the Anammox Bacterium Kuenenia stuttgartiensis Is Heavily O-Glycosylated. Front Microbiol 2016; 7:1721. [PMID: 27847504 PMCID: PMC5088730 DOI: 10.3389/fmicb.2016.01721] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 10/13/2016] [Indexed: 01/11/2023] Open
Abstract
Anaerobic ammonium oxidation (anammox) bacteria are a distinct group of Planctomycetes that are characterized by their unique ability to perform anammox with nitrite to dinitrogen gas in a specialized organelle. The cell of anammox bacteria comprises three membrane-bound compartments and is surrounded by a two-dimensional crystalline S-layer representing the direct interaction zone of anammox bacteria with the environment. Previous results from studies with the model anammox organism Kuenenia stuttgartiensis suggested that the protein monomers building the S-layer lattice are glycosylated. In the present study, we focussed on the characterization of the S-layer protein glycosylation in order to increase our knowledge on the cell surface characteristics of anammox bacteria. Mass spectrometry (MS) analysis showed an O-glycan attached to 13 sites distributed over the entire 1591-amino acid S-layer protein. This glycan is composed of six monosaccharide residues, of which five are N-acetylhexosamine (HexNAc) residues. Four of these HexNAc residues have been identified as GalNAc. The sixth monosaccharide in the glycan is a putative dimethylated deoxyhexose. Two of the HexNAc residues were also found to contain a methyl group, thereby leading to an extensive degree of methylation of the glycan. This study presents the first characterization of a glycoprotein in a planctomycete and shows that the S-layer protein Kustd1514 of K. stuttgartiensis is heavily glycosylated with an O-linked oligosaccharide which is additionally modified by methylation. S-layer glycosylation clearly contributes to the diversification of the K. stuttgartiensis cell surface and can be expected to influence the interaction of the bacterium with other cells or abiotic surfaces.
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Affiliation(s)
- Muriel C. F. van Teeseling
- Department of Microbiology, Institute for Water and Wetland Research, Faculty of Science, Radboud UniversityNijmegen, Netherlands
| | - Daniel Maresch
- Division of Biochemistry, Department of Chemistry, University of Natural Resources and Life SciencesVienna, Austria
| | - Cornelia B. Rath
- NanoGlycobiology Unit, Department of NanoBiotechnology, University of Natural Resources and Life SciencesVienna, Austria
| | - Rudolf Figl
- Division of Biochemistry, Department of Chemistry, University of Natural Resources and Life SciencesVienna, Austria
| | - Friedrich Altmann
- Division of Biochemistry, Department of Chemistry, University of Natural Resources and Life SciencesVienna, Austria
| | - Mike S. M. Jetten
- Department of Microbiology, Institute for Water and Wetland Research, Faculty of Science, Radboud UniversityNijmegen, Netherlands
| | - Paul Messner
- NanoGlycobiology Unit, Department of NanoBiotechnology, University of Natural Resources and Life SciencesVienna, Austria
| | - Christina Schäffer
- NanoGlycobiology Unit, Department of NanoBiotechnology, University of Natural Resources and Life SciencesVienna, Austria
| | - Laura van Niftrik
- Department of Microbiology, Institute for Water and Wetland Research, Faculty of Science, Radboud UniversityNijmegen, Netherlands
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Coping with cross-reactive carbohydrate determinants in allergy diagnosis. ACTA ACUST UNITED AC 2016; 25:98-105. [PMID: 27656353 PMCID: PMC5016538 DOI: 10.1007/s40629-016-0115-3] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 08/26/2015] [Indexed: 12/16/2022]
Abstract
A relevant proportion of allergy diagnosis is accomplished by in vitro determination of specific immunglobulin E (sIgE) to extracts from suspected allergens. Such extracts inevitably contain glycoproteins, which may react with patients' IgE. In the case of plant and insect allergens, the relevant epitope structure is an α-1,3-fucose on the Asn-linked sugar residue of so-called N-glycans. Due to their wide distribution, N-glycans carrying this epitope are known as "cross-reactive carbohydrate determinant(s)" (CCD[s]). About 15 years of awareness allow the conclusion that anti-CCD IgE does not cause noticeable clinical symptoms. In consequence, diagnostic results arising from CCD reactivity must be rated as false positives. With up to 30 % of CCD reactive patients, this can be regarded as a serious problem. Another cross-reactive carbohydrate determinant became notorious as a potential cause of anaphylactic reactions to a recombinant glycoprotein drug carrying α-1,3-galactose. This galactose-containing determinant (GalCD, galactose containing cross-reactive carbohydrate determinant) was supposed as a trigger for delayed allergic reactions to red meat in several cases. Thus, α-1,3-galactose may have clinical relevance in certain cases - possibly as a result of tick bites. Often, however, GalCDs probably cause false-positive results with milk and meat extracts. No clear evidence for the role of other non-human carbohydrate structures such as N-glycolylneuraminic acid as CCD has been presented so far. Remedies for sIgE based in vitro diagnosis come in the form of non-glycosylated recombinant allergen components or of specific CCD inhibitors. The high potential of recombinant allergens is optimally realized in the context of component resolved diagnosis using allergen arrays with more than 100 components, whereas CCD inhibitors increase the specificity of conventional extract-based diagnosis. Reagents for the detection and inhibition of CCDs from plants and insects have been developed, whereas tools for GalCDs of milk and meat lag behind.
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San Nicoló M, Braun T, Eder K, Berghaus A, Gröger M. Clinical Relevance of IgE to Profilin and/or Polcalcin in Pollen-Sensitized Patients. Int Arch Allergy Immunol 2016; 169:101-7. [PMID: 27042855 DOI: 10.1159/000444279] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 01/20/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Component-resolved diagnostics is gaining importance in allergy diagnostics. Allergen extracts contain components with different rates of prevalence and clinical relevance, which can be subdivided at molecular level into major and minor allergens. Clinical complaints are usually triggered by major allergens, while the role of sensitization to the panallergens profilin and polcalcin still remains unclear. METHODS Eighty-six patients from southern Bavaria with sensitization to the panallergens profilin (Bet v 2/Phl p 12) and/or polcalcin (Bet v 4/Phl p 7) were examined in regard to their sensitization to the 4 main botanic denominations Betulaceae, Oleaceae, Poaceae and Asteraceae by skin prick test and measurement of specific immunoglobulin E antibodies to natural allergen extracts as well as major allergen components rPhl p 1/5, rBet v 1, rOle e 1 and nArt v 1. Sensitization was rated as clinically relevant or irrelevant depending on anamnesis or intranasal allergen challenge. RESULTS Regarding the 4 botanic denominations, there was no significant difference in the incidence of sensitization to the panallergens profilin, polcalcin or both. The sensitization pattern does not alter when subdividing the cohort into clinically relevant and silent sensitization. We did not find clinically symptomatic sensitization to panallergens without cosensitization to a major allergen. CONCLUSIONS Our results suggest that sole sensitization to panallergens seems to have no clinical relevance in allergic rhinoconjunctivitis. Clinical complaints seem to be triggered manly by major allergens. Thus, component-resolved allergy diagnostics is crucial in the diagnosis and treatment of polysensitized patients.
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Affiliation(s)
- Marion San Nicoló
- Department of Otorhinolaryngology, Head and Neck Surgery, Ludwig Maximilian University Munich, Munich, Germany
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Abstract
Pollen allergens are one of the main causes of type I allergies affecting up to 30% of the population in industrialized countries. Climatic changes affect the duration and intensity of pollen seasons and may together with pollution contribute to increased incidences of respiratory allergy and asthma. Allergenic grasses, trees, and weeds often present similar habitats and flowering periods compromising clinical anamnesis. Molecule-based approaches enable distinction between genuine sensitization and clinically mostly irrelevant IgE cross-reactivity due to, e. g., panallergens or carbohydrate determinants. In addition, sensitivity as well as specificity can be improved and lead to identification of the primary sensitizing source which is particularly beneficial regarding polysensitized patients. This review gives an overview on relevant pollen allergens and their usefulness in daily practice. Appropriate allergy diagnosis is directly influencing decisions for therapeutic interventions, and thus, reliable biomarkers are pivotal when considering allergen immunotherapy in the context of precision medicine.
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Affiliation(s)
- Isabel Pablos
- />Department of Molecular Biology, University of Salzburg, Hellbrunner Straße 34, 5020 Salzburg, Austria
| | - Sabrina Wildner
- />Christian Doppler Laboratory for Biosimilar Characterization, University of Salzburg, Hellbrunner Straße 34, 5020 Salzburg, Austria
| | - Claudia Asam
- />Department of Molecular Biology, University of Salzburg, Hellbrunner Straße 34, 5020 Salzburg, Austria
| | - Michael Wallner
- />Department of Molecular Biology, University of Salzburg, Hellbrunner Straße 34, 5020 Salzburg, Austria
| | - Gabriele Gadermaier
- />Department of Molecular Biology, University of Salzburg, Hellbrunner Straße 34, 5020 Salzburg, Austria
- />Christian Doppler Laboratory for Biosimilar Characterization, University of Salzburg, Hellbrunner Straße 34, 5020 Salzburg, Austria
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Canut H, Albenne C, Jamet E. Post-translational modifications of plant cell wall proteins and peptides: A survey from a proteomics point of view. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2016; 1864:983-90. [PMID: 26945515 DOI: 10.1016/j.bbapap.2016.02.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 02/12/2016] [Accepted: 02/24/2016] [Indexed: 12/21/2022]
Abstract
Plant cell wall proteins (CWPs) and peptides are important players in cell walls contributing to their assembly and their remodeling during development and in response to environmental constraints. Since the rise of proteomics technologies at the beginning of the 2000's, the knowledge of CWPs has greatly increased leading to the discovery of new CWP families and to the description of the cell wall proteomes of different organs of many plants. Conversely, cell wall peptidomics data are still lacking. In addition to the identification of CWPs and peptides by mass spectrometry (MS) and bioinformatics, proteomics has allowed to describe their post-translational modifications (PTMs). At present, the best known PTMs consist in proteolytic cleavage, N-glycosylation, hydroxylation of P residues into hydroxyproline residues (O), O-glycosylation and glypiation. In this review, the methods allowing the capture of the modified proteins based on the specific properties of their PTMs as well as the MS technologies used for their characterization are briefly described. A focus is done on proteolytic cleavage leading to protein maturation or release of signaling peptides and on O-glycosylation. Some new technologies, like top-down proteomics and terminomics, are described. They aim at a finer description of proteoforms resulting from PTMs or degradation mechanisms. This article is part of a Special Issue entitled: Plant Proteomics--a bridge between fundamental processes and crop production, edited by Dr. Hans-Peter Mock.
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Affiliation(s)
- Hervé Canut
- Université de Toulouse, CNRS, UPS, 24 chemin de Borde Rouge, Auzeville, BP42617, 31326 Castanet Tolosan, France
| | - Cécile Albenne
- Université de Toulouse, CNRS, UPS, 24 chemin de Borde Rouge, Auzeville, BP42617, 31326 Castanet Tolosan, France
| | - Elisabeth Jamet
- Université de Toulouse, CNRS, UPS, 24 chemin de Borde Rouge, Auzeville, BP42617, 31326 Castanet Tolosan, France.
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Use of Component-Resolved Diagnosis (CRD) for Allergen Immunotherapy (AIT). CURRENT TREATMENT OPTIONS IN ALLERGY 2016. [DOI: 10.1007/s40521-016-0069-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abstract
Pollen allergens from short ragweed (Ambrosia artemisiifolia) cause severe respiratory allergies in North America and Europe. To date, ten short ragweed pollen allergens belonging to eight protein families, including the recently discovered novel major allergen Amb a 11, have been recorded in the International Union of Immunological Societies (IUIS) allergen database. With evidence that other components may further contribute to short ragweed pollen allergenicity, a better understanding of the allergen repertoire is a requisite for the design of proper diagnostic tools and efficient immunotherapies. This review provides an update on both known as well as novel candidate allergens from short ragweed pollen, identified through a comprehensive characterization of the ragweed pollen transcriptome and proteome.
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Oeder S, Alessandrini F, Wirz OF, Braun A, Wimmer M, Frank U, Hauser M, Durner J, Ferreira F, Ernst D, Mempel M, Gilles S, Buters JTM, Behrendt H, Traidl-Hoffmann C, Schmidt-Weber C, Akdis M, Gutermuth J. Pollen-derived nonallergenic substances enhance Th2-induced IgE production in B cells. Allergy 2015. [PMID: 26214762 DOI: 10.1111/all.12707] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND B cells play a central role in IgE-mediated allergies. In damaged airway epithelium, they are exposed directly to aeroallergens. We aimed to assess whether direct exposure of B cells to pollen constituents affects allergic sensitization. METHODS B cells from murine splenocytes and from blood samples of healthy donors were incubated for 8 days under Th2-like conditions with aqueous ragweed pollen extracts (Amb-APE) or its constituents. Secreted total IgM, IgG, and IgE was quantified by ELISA. Additionally, birch, grass, or pine-pollen extracts were tested. The number of viable cells was evaluated by ATP measurements. B-cell proliferation was measured by CFSE staining. IgE class switch was analyzed by quantitation of class switch transcripts. In an OVA/Alum i.p.-sensitization mouse model, Amb-APE was intranasally instilled for 11 consecutive days. RESULTS Upon Th2 priming of murine B cells, ragweed pollen extract caused a dose-dependent increase in IgE production, while IgG and IgM were not affected. The low-molecular-weight fraction and phytoprostane E1 (PPE1) increased IgE production, while Amb a 1 did not. PPE1 enhanced IgE also in human memory B cells. Under Th1 conditions, Amb-APE did not influence immunoglobulin secretion. The IgE elevation was not ragweed specific. It correlated with proliferation of viable B cells, but not with IgE class switch. In vivo, Amb-APE increased total IgE and showed adjuvant activity in allergic airway inflammation. CONCLUSIONS Aqueous pollen extracts, the protein-free fraction of Amb-APE, and the pollen-contained substance PPE1 specifically enhance IgE production in Th2-primed B cells. Thus, pollen-derived nonallergenic substances might be responsible for B-cell-dependent aggravation of IgE-mediated allergies.
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Affiliation(s)
- S. Oeder
- Center of Allergy and Environment (ZAUM); Technische Universität München and Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); Munich Germany
- Christine Kühne - Center for Allergy Research and Education; CK-CARE; Davos Switzerland
| | - F. Alessandrini
- Center of Allergy and Environment (ZAUM); Technische Universität München and Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); Munich Germany
- Christine Kühne - Center for Allergy Research and Education; CK-CARE; Davos Switzerland
| | - O. F. Wirz
- Swiss Institute of Allergy and Asthma Research (SIAF); Davos Switzerland
| | - A. Braun
- Center of Allergy and Environment (ZAUM); Technische Universität München and Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); Munich Germany
- Department of Dermatology, Venereology and Allergology; University Medical Center; Georg August University; Göttingen Germany
| | - M. Wimmer
- Center of Allergy and Environment (ZAUM); Technische Universität München and Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); Munich Germany
- Christine Kühne - Center for Allergy Research and Education; CK-CARE; Davos Switzerland
- Institute of Environmental Medicine; UNIKA-T; Technische Universität München; Munich Germany
| | - U. Frank
- Christine Kühne - Center for Allergy Research and Education; CK-CARE; Davos Switzerland
- Institute of Biochemical Plant Pathology; Helmholtz Center Munich; Neuherberg Germany
| | - M. Hauser
- Christine Kühne - Center for Allergy Research and Education; CK-CARE; Davos Switzerland
- Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - J. Durner
- Institute of Biochemical Plant Pathology; Helmholtz Center Munich; Neuherberg Germany
| | - F. Ferreira
- Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - D. Ernst
- Institute of Biochemical Plant Pathology; Helmholtz Center Munich; Neuherberg Germany
| | - M. Mempel
- Center of Allergy and Environment (ZAUM); Technische Universität München and Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); Munich Germany
- Department of Dermatology, Venereology and Allergology; University Medical Center; Georg August University; Göttingen Germany
| | - S. Gilles
- Center of Allergy and Environment (ZAUM); Technische Universität München and Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); Munich Germany
- Christine Kühne - Center for Allergy Research and Education; CK-CARE; Davos Switzerland
- Institute of Environmental Medicine; UNIKA-T; Technische Universität München; Munich Germany
| | - J. T. M. Buters
- Center of Allergy and Environment (ZAUM); Technische Universität München and Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); Munich Germany
- Christine Kühne - Center for Allergy Research and Education; CK-CARE; Davos Switzerland
| | - H. Behrendt
- Center of Allergy and Environment (ZAUM); Technische Universität München and Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); Munich Germany
- Christine Kühne - Center for Allergy Research and Education; CK-CARE; Davos Switzerland
| | - C. Traidl-Hoffmann
- Center of Allergy and Environment (ZAUM); Technische Universität München and Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); Munich Germany
- Christine Kühne - Center for Allergy Research and Education; CK-CARE; Davos Switzerland
- Institute of Environmental Medicine; UNIKA-T; Technische Universität München; Munich Germany
| | - C. Schmidt-Weber
- Center of Allergy and Environment (ZAUM); Technische Universität München and Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); Munich Germany
| | - M. Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF); Davos Switzerland
| | - J. Gutermuth
- Center of Allergy and Environment (ZAUM); Technische Universität München and Helmholtz Zentrum München; Member of the German Center for Lung Research (DZL); Munich Germany
- Department of Dermatology; Vrije Universiteit Brussel; Brussels Belgium
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Petersen A, Kull S, Rennert S, Becker WM, Krause S, Ernst M, Gutsmann T, Bauer J, Lindner B, Jappe U. Peanut defensins: Novel allergens isolated from lipophilic peanut extract. J Allergy Clin Immunol 2015; 136:1295-301.e1-5. [DOI: 10.1016/j.jaci.2015.04.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 02/27/2015] [Accepted: 04/01/2015] [Indexed: 10/23/2022]
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Ghosh N, Sircar G, Saha B, Pandey N, Gupta Bhattacharya S. Search for Allergens from the Pollen Proteome of Sunflower (Helianthus annuus L.): A Major Sensitizer for Respiratory Allergy Patients. PLoS One 2015; 10:e0138992. [PMID: 26418046 PMCID: PMC4587886 DOI: 10.1371/journal.pone.0138992] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 09/07/2015] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Respiratory allergy triggered by pollen allergens is increasing at an alarming rate worldwide. Sunflower pollen is thought to be an important source of inhalant allergens. Present study aims to identify the prevalence of sunflower pollinosis among the Indian allergic population and characterizes the pollen allergens using immuno-proteomic tools. METHODOLOGY Clinico-immunological tests were performed to understand the prevalence of sensitivity towards sunflower pollen among the atopic population. Sera from selected sunflower positive patients were used as probe to detect the IgE-reactive proteins from the one and two dimensional electrophoretic separated proteome of sunflower pollen. The antigenic nature of the sugar moiety of the glycoallergens was studied by meta-periodate modification of IgE-immunoblot. Finally, these allergens were identified by mass-spectrometry. RESULTS Prevalence of sunflower pollen sensitization was observed among 21% of the pollen allergic population and associated with elevated level of specific IgE and histamine in the sera of these patients. Immunoscreening of sunflower pollen proteome with patient sera detected seven IgE-reactive proteins with varying molecular weight and pI. Hierarchical clustering of 2D-immunoblot data highlighted three allergens characterized by a more frequent immuno-reactivity and increased levels of IgE antibodies in the sera of susceptible patients. These allergens were considered as the major allergens of sunflower pollen and were found to have their glycan moiety critical for inducing IgE response. Homology driven search of MS/MS data of these IgE-reactive proteins identified seven previously unreported allergens from sunflower pollen. Three major allergenic proteins were identified as two pectate lyases and a cysteine protease. CONCLUSION Novelty of the present report is the identification of a panel of seven sunflower pollen allergens for the first time at immuno-biochemical and proteomic level, which substantiated the clinical evidence of sunflower allergy. Further purification and recombinant expression of these allergens will improve component-resolved diagnosis and therapy of pollen allergy.
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MESH Headings
- Adolescent
- Adult
- Allergens/immunology
- Allergens/metabolism
- Antigens, Plant/immunology
- Antigens, Plant/metabolism
- Case-Control Studies
- Electrophoresis, Gel, Two-Dimensional
- Female
- Helianthus/immunology
- Helianthus/metabolism
- Humans
- Hypersensitivity, Immediate/diagnosis
- Hypersensitivity, Immediate/immunology
- Hypersensitivity, Immediate/metabolism
- Immunoblotting
- Immunoglobulin E/immunology
- Immunoglobulin E/metabolism
- Male
- Middle Aged
- Plant Proteins/immunology
- Plant Proteins/metabolism
- Pollen/immunology
- Pollen/metabolism
- Proteome/analysis
- Proteomics/methods
- Respiratory System/immunology
- Respiratory System/metabolism
- Rhinitis, Allergic, Seasonal/diagnosis
- Rhinitis, Allergic, Seasonal/immunology
- Skin/immunology
- Skin/metabolism
- Tandem Mass Spectrometry
- Young Adult
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Affiliation(s)
- Nandini Ghosh
- Division of Plant Biology, Bose Institute, Kolkata, West Bengal, India
| | - Gaurab Sircar
- Division of Plant Biology, Bose Institute, Kolkata, West Bengal, India
| | - Bodhisattwa Saha
- Division of Plant Biology, Bose Institute, Kolkata, West Bengal, India
| | - Naren Pandey
- Department of Allergy and Asthma, Belle Vue Clinic, Kolkata, India
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Identification of Novel Short Ragweed Pollen Allergens Using Combined Transcriptomic and Immunoproteomic Approaches. PLoS One 2015; 10:e0136258. [PMID: 26317427 PMCID: PMC4552831 DOI: 10.1371/journal.pone.0136258] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 07/31/2015] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Allergy to short ragweed (Ambrosia artemisiifolia) pollen is a serious and expanding health problem in North America and Europe. Whereas only 10 short ragweed pollen allergens are officially recorded, patterns of IgE reactivity observed in ragweed allergic patients suggest that other allergens contribute to allergenicity. The objective of the present study was to identify novel allergens following extensive characterization of the transcriptome and proteome of short ragweed pollen. METHODS Following a Proteomics-Informed-by-Transcriptomics approach, a comprehensive transcriptomic data set was built up from RNA-seq analysis of short ragweed pollen. Mass spectrometry-based proteomic analyses and IgE reactivity profiling after high resolution 2D-gel electrophoresis were then combined to identify novel allergens. RESULTS Short ragweed pollen transcripts were assembled after deep RNA sequencing and used to inform proteomic analyses, thus leading to the identification of 573 proteins in the short ragweed pollen. Patterns of IgE reactivity of individual sera from 22 allergic patients were assessed using an aqueous short ragweed pollen extract resolved over 2D-gels. Combined with information derived from the annotated pollen proteome, those analyses revealed the presence of multiple unreported IgE reactive proteins, including new Amb a 1 and Amb a 3 isoallergens as well as 7 novel candidate allergens reacting with IgEs from 20-70% of patients. The latter encompass members of the carbonic anhydrase, enolase, galactose oxidase, GDP dissociation inhibitor, pathogenesis related-17, polygalacturonase and UDP-glucose pyrophosphorylase families. CONCLUSIONS We extended the list of allergens identified in short ragweed pollen. These findings have implications for both diagnosis and allergen immunotherapy purposes.
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45
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Wimmer M, Alessandrini F, Gilles S, Frank U, Oeder S, Hauser M, Ring J, Ferreira F, Ernst D, Winkler JB, Schmitt-Kopplin P, Ohnmacht C, Behrendt H, Schmidt-Weber C, Traidl-Hoffmann C, Gutermuth J. Pollen-derived adenosine is a necessary cofactor for ragweed allergy. Allergy 2015; 70:944-54. [PMID: 25939785 DOI: 10.1111/all.12642] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2015] [Indexed: 01/22/2023]
Abstract
BACKGROUND Ragweed (Ambrosia artemisiifolia) is a strong elicitor of allergic airway inflammation with worldwide increasing prevalence. Various components of ragweed pollen are thought to play a role in the development of allergic responses. The aim of this study was to identify critical factors for allergenicity of ragweed pollen in a physiological model of allergic airway inflammation. METHODS Aqueous ragweed pollen extract, the low molecular weight fraction or the major allergen Amb a 1 was instilled intranasally on 1-11 consecutive days, and allergic airway inflammation was evaluated by bronchoalveolar lavage, lung histology, serology, gene expression in lung tissue, and measurement of lung function. Pollen-derived adenosine was removed from the extract enzymatically to analyze its role in ragweed-induced allergy. Migration of human neutrophils and eosinophils toward supernatants of ragweed-stimulated bronchial epithelial cells was analyzed. RESULTS Instillation of ragweed pollen extract, but not of the major allergen or the low molecular weight fraction, induced specific IgG1 , pulmonary infiltration with inflammatory cells, a Th2-associated cytokine signature in pulmonary tissue, and impaired lung function. Adenosine aggravated ragweed-induced allergic lung inflammation. In vitro, human neutrophils and eosinophils migrated toward supernatants of bronchial epithelial cells stimulated with ragweed extract only if adenosine was present. CONCLUSIONS Pollen-derived adenosine is a critical factor in ragweed-pollen-induced allergic airway inflammation. Future studies aim at therapeutic strategies to control these allergen-independent pathways.
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Affiliation(s)
- M. Wimmer
- Institute of Environmental Medicine; UNIKA-T; Technische Universität München; Munich Germany
- Center of Allergy and Environment (ZAUM); Technische Universität and Helmholtz Zentrum München; Member of the German Center for Lung research (DZL); Munich Germany
- Christine Kühne - Center for Allergy Research and Education; Zurich Switzerland
| | - F. Alessandrini
- Center of Allergy and Environment (ZAUM); Technische Universität and Helmholtz Zentrum München; Member of the German Center for Lung research (DZL); Munich Germany
- Christine Kühne - Center for Allergy Research and Education; Zurich Switzerland
| | - S. Gilles
- Institute of Environmental Medicine; UNIKA-T; Technische Universität München; Munich Germany
- Christine Kühne - Center for Allergy Research and Education; Zurich Switzerland
| | - U. Frank
- Christine Kühne - Center for Allergy Research and Education; Zurich Switzerland
- Institute of Biochemical Plant Pathology; Helmholtz Zentrum München; Munich Germany
| | - S. Oeder
- Center of Allergy and Environment (ZAUM); Technische Universität and Helmholtz Zentrum München; Member of the German Center for Lung research (DZL); Munich Germany
- Christine Kühne - Center for Allergy Research and Education; Zurich Switzerland
| | - M. Hauser
- Christine Kühne - Center for Allergy Research and Education; Zurich Switzerland
- Christian Doppler Laboratory for Allergy Diagnosis and Therapy; Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - J. Ring
- Christine Kühne - Center for Allergy Research and Education; Zurich Switzerland
- Department of Dermatology and Allergy Biederstein; TU Munich; Munich Germany
| | - F. Ferreira
- Christian Doppler Laboratory for Allergy Diagnosis and Therapy; Department of Molecular Biology; University of Salzburg; Salzburg Austria
| | - D. Ernst
- Institute of Biochemical Plant Pathology; Helmholtz Zentrum München; Munich Germany
| | - J. B. Winkler
- Research Unit Environmental Simulation at the Institute of Biochemical Plant Pathology; Helmholtz Zentrum München; Munich Germany
| | - P. Schmitt-Kopplin
- Research Unit Analytical BioGeoChemistry; Helmholtz Zentrum München; Munich Germany
- Analytical Food Chemistry; Technische Universität München; Munich Germany
| | - C. Ohnmacht
- Center of Allergy and Environment (ZAUM); Technische Universität and Helmholtz Zentrum München; Member of the German Center for Lung research (DZL); Munich Germany
| | - H. Behrendt
- Center of Allergy and Environment (ZAUM); Technische Universität and Helmholtz Zentrum München; Member of the German Center for Lung research (DZL); Munich Germany
- Christine Kühne - Center for Allergy Research and Education; Zurich Switzerland
| | - C. Schmidt-Weber
- Center of Allergy and Environment (ZAUM); Technische Universität and Helmholtz Zentrum München; Member of the German Center for Lung research (DZL); Munich Germany
| | - C. Traidl-Hoffmann
- Institute of Environmental Medicine; UNIKA-T; Technische Universität München; Munich Germany
- Christine Kühne - Center for Allergy Research and Education; Zurich Switzerland
- Department of Dermatology and Allergy Biederstein; TU Munich; Munich Germany
| | - J. Gutermuth
- Center of Allergy and Environment (ZAUM); Technische Universität and Helmholtz Zentrum München; Member of the German Center for Lung research (DZL); Munich Germany
- Department of Dermatology and Allergy Biederstein; TU Munich; Munich Germany
- Department of Dermatology; Universitair Ziekenhuis Brussel; Vrije Universiteit Brussel; Brussel Belgium
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46
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: an update for 2009-2010. MASS SPECTROMETRY REVIEWS 2015; 34:268-422. [PMID: 24863367 PMCID: PMC7168572 DOI: 10.1002/mas.21411] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 07/16/2013] [Accepted: 07/16/2013] [Indexed: 05/07/2023]
Abstract
This review is the sixth update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2010. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, arrays and fragmentation are covered in the first part of the review and applications to various structural typed constitutes the remainder. The main groups of compound that are discussed in this section are oligo and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals. Many of these applications are presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions and applications to chemical synthesis.
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Affiliation(s)
- David J. Harvey
- Department of BiochemistryOxford Glycobiology InstituteUniversity of OxfordOxfordOX1 3QUUK
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47
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Bouley J, Groeme R, Le Mignon M, Jain K, Chabre H, Bordas-Le Floch V, Couret MN, Bussières L, Lautrette A, Naveau M, Baron-Bodo V, Lombardi V, Mascarell L, Batard T, Nony E, Moingeon P. Identification of the cysteine protease Amb a 11 as a novel major allergen from short ragweed. J Allergy Clin Immunol 2015; 136:1055-64. [PMID: 25865353 DOI: 10.1016/j.jaci.2015.03.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 02/16/2015] [Accepted: 03/02/2015] [Indexed: 11/26/2022]
Abstract
BACKGROUND Allergy to pollen from short ragweed (Ambrosia artemisiifolia) is a serious and expanding health problem in the United States and in Europe. OBJECTIVE We sought to investigate the presence of undescribed allergens in ragweed pollen. METHODS Ragweed pollen proteins were submitted to high-resolution gel electrophoresis and tested for IgE reactivity by using sera from 92 American or European donors with ragweed allergy. Pollen transcriptome sequencing, mass spectrometry (MS), and recombinant DNA technologies were applied to characterize new IgE-binding proteins. RESULTS High-resolution IgE immunoblotting experiments revealed that 50 (54%) of 92 patients with ragweed allergy were sensitized to a 37-kDa allergen distinct from Amb a 1. The full-length cDNA sequence for this molecule was obtained by means of PCR cloning after MS sequencing of the protein combined with ragweed pollen RNA sequencing. The purified allergen, termed Amb a 11, was fully characterized by MS and confirmed to react with IgEs from 66% of patients. This molecule is a 262-amino-acid thiol protease of the papain family expressed as a combination of isoforms and glycoforms after proteolytic removal of N- and C-terminal propeptides from a proform. Three-dimensional modeling revealed a high structural homology with known cysteine proteases, including the mite Der p 1 allergen. The protease activity of Amb a 11, as well as its capacity to activate basophils from patients with ragweed allergy, were confirmed. The production of a nonglycosylated recombinant form of Amb a 11 in Escherichia coli established that glycosylation is not required for IgE binding. CONCLUSION We identified the cysteine protease Amb a 11 as a new major allergen from ragweed pollen. Given the similar physicochemical properties shared by the 2 major allergens, we hypothesize that part of the allergenic activity previously ascribed to Amb a 1 is rather borne by Amb a 11.
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Affiliation(s)
- Julien Bouley
- Research & Pharmaceutical Development, Stallergenes, Antony, France
| | - Rachel Groeme
- Research & Pharmaceutical Development, Stallergenes, Antony, France
| | - Maxime Le Mignon
- Research & Pharmaceutical Development, Stallergenes, Antony, France
| | - Karine Jain
- Research & Pharmaceutical Development, Stallergenes, Antony, France
| | - Henri Chabre
- Research & Pharmaceutical Development, Stallergenes, Antony, France
| | | | | | | | | | - Marie Naveau
- Research & Pharmaceutical Development, Stallergenes, Antony, France
| | | | - Vincent Lombardi
- Research & Pharmaceutical Development, Stallergenes, Antony, France
| | | | - Thierry Batard
- Research & Pharmaceutical Development, Stallergenes, Antony, France
| | - Emmanuel Nony
- Research & Pharmaceutical Development, Stallergenes, Antony, France
| | - Philippe Moingeon
- Research & Pharmaceutical Development, Stallergenes, Antony, France.
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48
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Ihler F, Canis M. Ragweed-induced allergic rhinoconjunctivitis: current and emerging treatment options. J Asthma Allergy 2015; 8:15-24. [PMID: 25733916 PMCID: PMC4337734 DOI: 10.2147/jaa.s47789] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Ragweed (Ambrosia spp.) is an annually flowering plant whose pollen bears high allergenic potential. Ragweed-induced allergic rhinoconjunctivitis has long been seen as a major immunologic condition in Northern America with high exposure and sensitization rates in the general population. The invasive occurrence of ragweed (A. artemisiifolia) poses an increasing challenge to public health in Europe and Asia as well. Possible explanations for its worldwide spread are climate change and urbanization, as well as pollen transport over long distances by globalized traffic and winds. Due to the increasing disease burden worldwide, and to the lack of a current and comprehensive overview, this study aims to review the current and emerging treatment options for ragweed-induced rhinoconjunctivitis. Sound clinical evidence is present for the symptomatic treatment of ragweed-induced allergic rhinoconjunctivitis with oral third-generation H1-antihistamines and leukotriene antagonists. The topical application of glucocorticoids has also been efficient in randomized controlled clinical trials. Combined approaches employing multiple agents are common. The mainstay of causal treatment to date, especially in Northern America, is subcutaneous immunotherapy with the focus on the major allergen, Amb a 1. Beyond this, growing evidence from several geographical regions documents the benefit of sublingual immunotherapy. Future treatment options promise more specific symptomatic treatment and fewer side effects during causal therapy. Novel antihistamines for symptomatic treatment are aimed at the histamine H3-receptor. New adjuvants with toll-like receptor 4 activity or the application of the monoclonal anti-immunoglobulin E antibody, omalizumab, are supposed to enhance conventional immunotherapy. An approach targeting toll-like receptor 9 by synthetic cytosine phosphate–guanosine oligodeoxynucleotides promises a new treatment paradigm that aims to modulate the immune response, but it has yet to be proven in clinical trials.
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Affiliation(s)
- Friedrich Ihler
- Department of Otorhinolaryngology, University Medical Center Göttingen, Göttingen, Germany
| | - Martin Canis
- Department of Otorhinolaryngology, University Medical Center Göttingen, Göttingen, Germany
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49
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Stemeseder T, Hemmer W, Hawranek T, Gadermaier G. Marker allergens of weed pollen - basic considerations and diagnostic benefits in the clinical routine: Part 16 of the Series Molecular Allergology. ALLERGO JOURNAL INTERNATIONAL 2014; 23:274-280. [PMID: 26120538 PMCID: PMC4479474 DOI: 10.1007/s40629-014-0033-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 08/25/2014] [Indexed: 10/28/2022]
Abstract
The term weed is referring to plants used as culinary herbs and medicinal plants as well as ecologically adaptive and invasive segetal plants. In Europe, pollen of ragweed, mugwort, English plantain and pellitory are the main elicitors of weed pollen allergies. Presently, 35 weed pollen allergens have been identified. The most relevant belong to the protein families of pectate lyases, defensin-like proteins, non-specific lipid transfer proteins, and Ole e 1-like proteins. The sensitization frequency depends on geographic regions and might affect more than 50 % of pollen allergic patients in distinct regions. Due to overlapping flowering seasons, similar habitats, polysensitizations and cross-reactive (pan)-allergens, it is difficult to diagnose genuine weed pollen sensitization using pollen extracts. Marker allergens for component-resolved diagnostics are available for the important weed pollen. These are Amb a 1 (ragweed), Art v 1 (mugwort), Pla l 1 (English plantain) and Par j 2 (pellitory). Molecule-based approaches can be used to identify the primary sensitizer and thus enable selection of the appropriate weed pollen extracts for allergen immunotherapy.
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Affiliation(s)
- Teresa Stemeseder
- />Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | | | - Thomas Hawranek
- />Department of Dermatology, Paracelsus Private Medical University Salzburg, Salzburg, Österreich
| | - Gabriele Gadermaier
- />Department of Molecular Biology, University of Salzburg, Salzburg, Austria
- />Christian Doppler Laboratory for Biosimilar Characterization, University of Salzburg, Salzburg, Austria
- />Christian Doppler Laboratory for Biosimilar Characterization Department of Molecular Biology, University of Salzburg, Hellbrunnerstraße 34, 5020 Salzburg, Austria
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50
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Stemeseder T, Hemmer W, Hawranek T, Gadermaier G. Markerallergene von Kräuterpollen — Grundlagen und diagnostischer Nutzen im klinischen Alltag. ALLERGO JOURNAL 2014. [DOI: 10.1007/s15007-014-0718-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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