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Sekerel BE, Aliyeva G. Advancing diagnostic precision: Unveiling sensitization relationships between cat, dog, and horse allergen molecules. Pediatr Allergy Immunol 2024; 35:e14177. [PMID: 38881167 DOI: 10.1111/pai.14177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 06/02/2024] [Accepted: 06/05/2024] [Indexed: 06/18/2024]
Abstract
BACKGROUND Recent advancements in molecular diagnostics have unveiled a multitude of allergen molecules (AMs) associated with animal sensitizations, revealing significant cross- and co-sensitization patterns among these seemingly distinct allergens. METHOD We investigated the sensitization profiles of 120 children, sensitized to at least one of the 14 AMs from cat, dog, or horse using the Alex test, employing correlations and hierarchical clusters to explore relationship between sensitizations. RESULTS Sensitizations to Fel d 1, Can f 4/5, and Equ c 4 differ from other cat, dog, and horse AM sensitizations, suggesting they may represent genuine sensitizations for their respective animals. High correlations were observed among various AMs, including lipocalins (Can f 1/2/6, Fel d 4/7, and Equ c 1), serum albumins (Fel d 2, Can f 3, and Equ c 3), and uteroglobins (Fel d 1 and Can f_Fd1). Hierarchical clustering of sensitizations identified two similarity clusters and one dissimilarity cluster, providing an estimation of the likelihood of cross-reactivity. Additionally, our method facilitated speculation regarding cross-, co-, or genuine sensitization. Moreover, we noted a potential increase in the number and level of sensitized animal AMs concurrent with increased sensitization to other aeroallergens with advancing age. No significant difference was detected for the presence or absence of various types of allergic comorbidities. CONCLUSION Correlations and hierarchical clustering can unveil the extent and magnitude of cross-, co-, and genuine sensitization relationships among animal AMs. These insights can be leveraged to enhance artificial intelligence algorithms, improving diagnostic accuracy through the integration of other measures of sensitization.
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Affiliation(s)
- Bulent Enis Sekerel
- Division of Pediatric Allergy, Hacettepe University School of Medicine, Ankara, Turkey
| | - Gulnar Aliyeva
- Division of Pediatric Allergy, Hacettepe University School of Medicine, Ankara, Turkey
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2
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Rosada T, Lis K, Bartuzi Z, Grześk-Kaczyńska M, Ukleja-Sokołowska N. Diagnostics of Allergy to Furry Animals-Possibilities in 2024. J Clin Med 2024; 13:3239. [PMID: 38892951 PMCID: PMC11172995 DOI: 10.3390/jcm13113239] [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: 04/20/2024] [Revised: 05/21/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024] Open
Abstract
Diagnosing allergies is not always easy. Sometimes the symptoms reported by the patient do not match the results of diagnostic tests. Diagnostics of IgE-dependent allergy, including allergy to furry animals, can be based on two basic strategies, "BOTTOM-UP" and "TOP-DOWN", and almost all available allergy tests can be used ranging from skin tests, through specific IgE, to molecular panels and challenge tests. Currently, most information regarding the diagnosis and incidence of allergies to furry animals focuses almost exclusively on the two most common pets-dogs and cats. This is certainly due to the fact that allergy to cats and/or dogs is a common phenomenon, has a huge impact on quality of life, and is a challenge for doctors of many specialties. However, the growing number of owners of other pet species means that diagnostic methods must keep up with the changing needs of patients. Further research in these groups will certainly provide new facts and facilitate clinical decision-making when working with allergic patients.
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Affiliation(s)
- Tomasz Rosada
- Department and Clinic of Allergology, Clinical Immunology and Internal Diseases, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland; (K.L.); (Z.B.); (N.U.-S.)
| | - Kinga Lis
- Department and Clinic of Allergology, Clinical Immunology and Internal Diseases, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland; (K.L.); (Z.B.); (N.U.-S.)
| | - Zbigniew Bartuzi
- Department and Clinic of Allergology, Clinical Immunology and Internal Diseases, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland; (K.L.); (Z.B.); (N.U.-S.)
| | - Magdalena Grześk-Kaczyńska
- Clinic of Allergology, Clinical Immunology and Internal Diseases, Jan Biziel University Hospital No. 2 in Bydgoszcz, 75 Ujejskiego St., 85-168 Bydgoszcz, Poland;
| | - Natalia Ukleja-Sokołowska
- Department and Clinic of Allergology, Clinical Immunology and Internal Diseases, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland; (K.L.); (Z.B.); (N.U.-S.)
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Khatri K, O'Malley A, Linn C, Kowal K, Chruszcz M. Role of Small Molecule Ligands in IgE-Mediated Allergy. Curr Allergy Asthma Rep 2023; 23:497-508. [PMID: 37351723 DOI: 10.1007/s11882-023-01100-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2023] [Indexed: 06/24/2023]
Abstract
PURPOSE OF REVIEW A significant fraction of allergens bind small molecular ligands, and many of these compounds are classified as lipids. However, in most cases, we do not know the role that is played by the ligands in the allergic sensitization or allergic effector phases. RECENT FINDINGS More effort is dedicated toward identification of allergens' ligands. This resulted in identification of some lipidic compounds that can play active immunomodulatory roles or impact allergens' molecular and allergic properties. Four allergen families (lipocalins, NPC2, nsLTP, and PR-10) are among the best characterized in terms of their ligand-binding properties. Allergens from these four families are able to bind many chemically diverse molecules. These molecules can directly interact with human immune system and/or affect conformation and stability of allergens. While there is more data on the allergens and their small molecular ligands, we are just starting to understand their role in allergy.
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Affiliation(s)
- Kriti Khatri
- Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Rd, East Lansing, MI, 48824, USA
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, USA
| | - Andrea O'Malley
- Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Rd, East Lansing, MI, 48824, USA
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, USA
| | - Christina Linn
- Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Rd, East Lansing, MI, 48824, USA
| | - Krzysztof Kowal
- Department of Experimental Allergology and Immunology, Medical University of Bialystok, Bialystok, Poland
| | - Maksymilian Chruszcz
- Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Rd, East Lansing, MI, 48824, USA.
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Durairaj R, Pageat P, Bienboire-Frosini C. Impact of Semiochemicals Binding to Fel d 1 on Its 3D Conformation and Predicted B-Cell Epitopes Using Computational Approaches. Int J Mol Sci 2023; 24:11685. [PMID: 37511444 PMCID: PMC10380945 DOI: 10.3390/ijms241411685] [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] [Received: 06/14/2023] [Revised: 07/12/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
The major cat allergen Fel d 1 is a tetrameric glycoprotein from the secretoglobin superfamily. Fel d 1's biological role is unknown, but it has been previously shown that it participates in semiochemical binding/transportation. Fel d 1 has linear epitopes, but its conformational epitope sites remain unclear. In this study, we predicted the B-cell epitopes of Fel d 1 and explored semiochemical dynamics with epitopes using bioinformatics tools. The epitope residues were tabulated for chains 1 and 2 and the heterodimers of Fel d 1. The residual interactions of Fel d 1 with IgE were evaluated, and the prominent epitope sites were predicted. The molecular dynamics simulation (MDS) of Fel d 1 was performed with seven reported semiochemicals to evaluate the Fel d 1-ligand complex stability and decipher the semiochemical effect on Fel d 1 conformational epitopes. Fel d 1-lauric acid, Fel d 1-oleic acid, and Fel d 1-progesterone showed more stability and less fluctuation than other compounds. Fel d 1-linoleic acid and Fel d 1-pregnenolone displayed the most unstable complex with fluctuations. The effects of conformational changes on epitopes are discussed. All the ligand complexes drive substantial fluctuation towards the functionally exposed IgE-binding epitopes. Fel d 1 could be examined for its ligand-binding and conformational changes caused by mutations of B-cell epitopes.
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Affiliation(s)
- Rajesh Durairaj
- Department of Bioinformatics and Chemical Communication (D-BICC), Research Institute in Semiochemistry and Applied Ethology (IRSEA), Quartier Salignan, 84400 Apt, France
| | - Patrick Pageat
- Research and Education Board, Research Institute in Semiochemistry and Applied Ethology (IRSEA), Quartier Salignan, 84400 Apt, France
| | - Cécile Bienboire-Frosini
- Department of Molecular Biology and Chemical Communication (D-BMCC), Research Institute in Semiochemistry and Applied Ethology (IRSEA), Quartier Salignan, 84400 Apt, France
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van Hage M, Käck U, Asarnoj A, Konradsen JR. An update on the prevalence and diagnosis of cat and dog allergy - Emphasizing the role of molecular allergy diagnostics. Mol Immunol 2023; 157:1-7. [PMID: 36947935 DOI: 10.1016/j.molimm.2023.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/30/2023] [Accepted: 03/01/2023] [Indexed: 03/24/2023]
Abstract
The clinical presentation of cat and dog allergy vary from discomfort caused by rhinoconjuncitivitis to severe asthma. Exposure to allergens from these animals is ubiquitous and allergic sensitization to cat or dog affect up to 25% of all children and adults, but allergic sensitization does not always cause symptoms. The introduction of molecular-based allergy diagnostics has improved the possibility to characterize the allergic patient in greater detail. However, the full clinical potential of using molecular allergology in the diagnosis, characterization and treatment of patients with allergy to cats and dogs has not yet been established, although significant progress has been made during the last decade, which will be reviewed in detail in this paper.
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Affiliation(s)
- Marianne van Hage
- Department of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
| | - Ulrika Käck
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden; Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Anna Asarnoj
- Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden; Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Jon R Konradsen
- Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden; Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.
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6
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Min J, Foo ACY, Gabel SA, Perera L, DeRose EF, Pomés A, Pedersen LC, Mueller GA. Structural and ligand binding analysis of the pet allergens Can f 1 and Fel d 7. FRONTIERS IN ALLERGY 2023; 4:1133412. [PMID: 36960093 PMCID: PMC10028261 DOI: 10.3389/falgy.2023.1133412] [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: 12/28/2022] [Accepted: 02/16/2023] [Indexed: 03/09/2023] Open
Abstract
Introduction Pet lipocalins are respiratory allergens with a central hydrophobic ligand-binding cavity called a calyx. Molecules carried in the calyx by allergens are suggested to influence allergenicity, but little is known about the native ligands. Methods To provide more information on prospective ligands, we report crystal structures, NMR, molecular dynamics, and florescence studies of a dog lipocalin allergen Can f 1 and its closely related (and cross-reactive) cat allergen Fel d 7. Results Structural comparisons with reported lipocalins revealed that Can f 1 and Fel d 7 calyxes are open and positively charged while other dog lipocalin allergens are closed and negatively charged. We screened fatty acids as surrogate ligands, and found that Can f 1 and Fel d 7 bind multiple ligands with preferences for palmitic acid (16:0) among saturated fatty acids and oleic acid (18:1 cis-9) among unsaturated ones. NMR analysis of methyl probes reveals that conformational changes occur upon binding of pinolenic acid inside the calyx. Molecular dynamics simulation shows that the carboxylic group of fatty acids shuttles between two positively charged amino acids inside the Can f 1 and Fel d 7 calyx. Consistent with simulations, the stoichiometry of oleic acid-binding is 2:1 (fatty acid: protein) for Can f 1 and Fel d 7. Discussion The results provide valuable insights into the determinants of selectivity and candidate ligands for pet lipocalin allergens Can f 1 and Fel d 7.
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Affiliation(s)
- Jungki Min
- Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States
| | - Alexander C. Y. Foo
- Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States
| | - Scott A. Gabel
- Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States
| | - Lalith Perera
- Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States
| | - Eugene F. DeRose
- Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States
| | - Anna Pomés
- Basic Research, InBio, Charlottesville, VA, United States
| | - Lars C. Pedersen
- Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States
| | - Geoffrey A. Mueller
- Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States
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7
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Dramburg S, Hilger C, Santos AF, de Las Vecillas L, Aalberse RC, Acevedo N, Aglas L, Altmann F, Arruda KL, Asero R, Ballmer-Weber B, Barber D, Beyer K, Biedermann T, Bilo MB, Blank S, Bosshard PP, Breiteneder H, Brough HA, Bublin M, Campbell D, Caraballo L, Caubet JC, Celi G, Chapman MD, Chruszcz M, Custovic A, Czolk R, Davies J, Douladiris N, Eberlein B, Ebisawa M, Ehlers A, Eigenmann P, Gadermaier G, Giovannini M, Gomez F, Grohman R, Guillet C, Hafner C, Hamilton RG, Hauser M, Hawranek T, Hoffmann HJ, Holzhauser T, Iizuka T, Jacquet A, Jakob T, Janssen-Weets B, Jappe U, Jutel M, Kalic T, Kamath S, Kespohl S, Kleine-Tebbe J, Knol E, Knulst A, Konradsen JR, Korošec P, Kuehn A, Lack G, Le TM, Lopata A, Luengo O, Mäkelä M, Marra AM, Mills C, Morisset M, Muraro A, Nowak-Wegrzyn A, Nugraha R, Ollert M, Palosuo K, Pastorello EA, Patil SU, Platts-Mills T, Pomés A, Poncet P, Potapova E, Poulsen LK, Radauer C, Radulovic S, Raulf M, Rougé P, Sastre J, Sato S, Scala E, Schmid JM, Schmid-Grendelmeier P, Schrama D, Sénéchal H, Traidl-Hoffmann C, Valverde-Monge M, van Hage M, van Ree R, Verhoeckx K, Vieths S, Wickman M, Zakzuk J, Matricardi PM, Hoffmann-Sommergruber K. EAACI Molecular Allergology User's Guide 2.0. Pediatr Allergy Immunol 2023; 34 Suppl 28:e13854. [PMID: 37186333 DOI: 10.1111/pai.13854] [Citation(s) in RCA: 63] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 09/05/2022] [Indexed: 05/17/2023]
Abstract
Since the discovery of immunoglobulin E (IgE) as a mediator of allergic diseases in 1967, our knowledge about the immunological mechanisms of IgE-mediated allergies has remarkably increased. In addition to understanding the immune response and clinical symptoms, allergy diagnosis and management depend strongly on the precise identification of the elicitors of the IgE-mediated allergic reaction. In the past four decades, innovations in bioscience and technology have facilitated the identification and production of well-defined, highly pure molecules for component-resolved diagnosis (CRD), allowing a personalized diagnosis and management of the allergic disease for individual patients. The first edition of the "EAACI Molecular Allergology User's Guide" (MAUG) in 2016 rapidly became a key reference for clinicians, scientists, and interested readers with a background in allergology, immunology, biology, and medicine. Nevertheless, the field of molecular allergology is moving fast, and after 6 years, a new EAACI Taskforce was established to provide an updated document. The Molecular Allergology User's Guide 2.0 summarizes state-of-the-art information on allergen molecules, their clinical relevance, and their application in diagnostic algorithms for clinical practice. It is designed for both, clinicians and scientists, guiding health care professionals through the overwhelming list of different allergen molecules available for testing. Further, it provides diagnostic algorithms on the clinical relevance of allergenic molecules and gives an overview of their biology, the basic mechanisms of test formats, and the application of tests to measure allergen exposure.
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Affiliation(s)
- Stephanie Dramburg
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Christiane Hilger
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Alexandra F Santos
- Department of Women and Children's Health (Pediatric Allergy), School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, London, United Kingdom
- Children's Allergy Service, Evelina London, Guy's and St Thomas' Hospital, London, United Kingdom
| | | | - Rob C Aalberse
- Sanquin Research, Dept Immunopathology, University of Amsterdam, Amsterdam, The Netherlands
- Landsteiner Laboratory, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Nathalie Acevedo
- Institute for Immunological Research, University of Cartagena, Cartagena de Indias, Colombia, Colombia
| | - Lorenz Aglas
- Department of Biosciences and Medical Biology, Paris Lodron University Salzburg, Salzburg, Austria
| | - Friedrich Altmann
- Department of Chemistry, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Karla L Arruda
- Department of Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Sao Paulo, Brasil, Brazil
| | - Riccardo Asero
- Ambulatorio di Allergologia, Clinica San Carlo, Paderno Dugnano, Italy
| | - Barbara Ballmer-Weber
- Klinik für Dermatologie und Allergologie, Kantonsspital St. Gallen, St. Gallen, Switzerland
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland
| | - Domingo Barber
- Institute of Applied Molecular Medicine Nemesio Diez (IMMAND), Department of Basic Medical Sciences, Facultad de Medicina, Universidad San Pablo CEU, CEU Universities, Madrid, Spain
- RETIC ARADyAL and RICORS Enfermedades Inflamatorias (REI), Madrid, Spain
| | - Kirsten Beyer
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Tilo Biedermann
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University Munich, Munich, Germany
| | - Maria Beatrice Bilo
- Department of Clinical and Molecular Sciences, Università Politecnica delle Marche, Ancona, Italy
- Allergy Unit Department of Internal Medicine, University Hospital Ospedali Riuniti di Ancona, Torrette, Italy
| | - Simon Blank
- Center of Allergy and Environment (ZAUM), Technical University of Munich, School of Medicine and Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany
| | - Philipp P Bosshard
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland
| | - Heimo Breiteneder
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - Helen A Brough
- Department of Women and Children's Health (Pediatric Allergy), School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
- Children's Allergy Service, Evelina London, Guy's and St Thomas' Hospital, London, United Kingdom
| | - Merima Bublin
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - Dianne Campbell
- Department of Allergy and Immunology, Children's Hospital at Westmead, Sydney Children's Hospitals Network, Sydney, New South Wales, Australia
- Child and Adolescent Health, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Luis Caraballo
- Institute for Immunological Research, University of Cartagena, Cartagena de Indias, Colombia, Colombia
| | - Jean Christoph Caubet
- Pediatric Allergy Unit, Department of Child and Adolescent, University Hospitals of Geneva, Geneva, Switzerland
| | - Giorgio Celi
- Centro DH Allergologia e Immunologia Clinica ASST- MANTOVA (MN), Mantova, Italy
| | | | - Maksymilian Chruszcz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, USA
| | - Adnan Custovic
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Rebecca Czolk
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Faculty of Science, Technology and Medicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Janet Davies
- Queensland University of Technology, Centre for Immunology and Infection Control, School of Biomedical Sciences, Herston, Queensland, Australia
- Metro North Hospital and Health Service, Emergency Operations Centre, Herston, Queensland, Australia
| | - Nikolaos Douladiris
- Allergy Department, 2nd Paediatric Clinic, National and Kapodistrian University of Athens, Athens, Greece
| | - Bernadette Eberlein
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University Munich, Munich, Germany
| | - Motohiro Ebisawa
- Clinical Research Center for Allergy and Rheumatology, National Hospital Organization, Sagamihara National Hospital, Kanagawa, Japan
| | - Anna Ehlers
- Chemical Biology and Drug Discovery, Utrecht University, Utrecht, The Netherlands
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Department of Immunology and Dermatology/ Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Philippe Eigenmann
- Pediatric Allergy Unit, Department of Child and Adolescent, University Hospitals of Geneva, Geneva, Switzerland
| | - Gabriele Gadermaier
- Department of Biosciences and Medical Biology, Paris Lodron University Salzburg, Salzburg, Austria
| | - Mattia Giovannini
- Allergy Unit, Department of Pediatrics, Meyer Children's University Hospital, Florence, Italy
| | - Francisca Gomez
- Allergy Unit IBIMA-Hospital Regional Universitario de Malaga, Malaga, Spain
- Spanish Network for Allergy research RETIC ARADyAL, Malaga, Spain
| | - Rebecca Grohman
- NYU Langone Health, Department of Internal Medicine, New York, New York, USA
| | - Carole Guillet
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Christine Hafner
- Department of Dermatology, University Hospital St. Poelten, Karl Landsteiner University of Health Sciences, St. Poelten, Austria
| | - Robert G Hamilton
- Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Michael Hauser
- Department of Biosciences and Medical Biology, Paris Lodron University Salzburg, Salzburg, Austria
| | - Thomas Hawranek
- Department of Dermatology and Allergology, Paracelsus Private Medical University, Salzburg, Austria
| | - Hans Jürgen Hoffmann
- Institute for Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
- Department of Respiratory Diseases and Allergy, Aarhus University Hospital, Aarhus, Denmark
| | | | - Tomona Iizuka
- Laboratory of Protein Science, Graduate School of Life Science, Hokkaido University, Sapporo, Japan
| | - Alain Jacquet
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Thilo Jakob
- Department of Dermatology and Allergology, University Medical Center, Justus Liebig University Gießen, Gießen, Germany
| | - Bente Janssen-Weets
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Odense Research Center for Anaphylaxis, University of Southern Denmark, Odense, Denmark
| | - Uta Jappe
- Division of Clinical and Molecular Allergology, Priority Research Area Asthma and Allergy, Research Center Borstel, Borstel, Germany
- Leibniz Lung Center, Airway Research Center North (ARCN), Member of the German Center for Lung Research, Germany
- Interdisciplinary Allergy Outpatient Clinic, Dept. of Pneumology, University of Lübeck, Lübeck, Germany
| | - Marek Jutel
- Department of Clinical Immunology, Wroclaw Medical University, Wroclaw, Poland
| | - Tanja Kalic
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
- Department of Dermatology, University Hospital St. Poelten, Karl Landsteiner University of Health Sciences, St. Poelten, Austria
| | - Sandip Kamath
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Queensland, Australia
- Molecular Allergy Research Laboratory, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland, Australia
| | - Sabine Kespohl
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr- Universität Bochum, Bochum, Germany
| | - Jörg Kleine-Tebbe
- Allergy & Asthma Center Westend, Outpatient Clinic and Clinical Research Center, Berlin, Germany
| | - Edward Knol
- Department of Immunology and Dermatology/ Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - André Knulst
- Department of Immunology and Dermatology/ Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Jon R Konradsen
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
- Pediatric Allergy and Pulmonology Unit at Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Peter Korošec
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik, Slovenia
- Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - Annette Kuehn
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Gideon Lack
- Department of Women and Children's Health (Pediatric Allergy), School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, London, United Kingdom
- Children's Allergy Service, Evelina London, Guy's and St Thomas' Hospital, London, United Kingdom
| | - Thuy-My Le
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Department of Immunology and Dermatology/ Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Andreas Lopata
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Queensland, Australia
- Molecular Allergy Research Laboratory, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland, Australia
| | - Olga Luengo
- RETIC ARADyAL and RICORS Enfermedades Inflamatorias (REI), Madrid, Spain
- Allergy Section, Internal Medicine Department, Vall d'Hebron University Hospital, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Mika Mäkelä
- Division of Allergy, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
- Pediatric Department, Skin and Allergy Hospital, Helsinki University Central Hospital, Helsinki, Finland
| | | | - Clare Mills
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Manchester Institute of Biotechnology, The University of Manchester, Manchester, UK
| | | | - Antonella Muraro
- Food Allergy Referral Centre, Department of Woman and Child Health, Padua University Hospital, Padua, Italy
| | - Anna Nowak-Wegrzyn
- Division of Pediatric Allergy and Immunology, NYU Grossman School of Medicine, Hassenfeld Children's Hospital, New York, New York, USA
- Department of Pediatrics, Gastroenterology and Nutrition, Collegium Medicum, University of Warmia and Mazury, Olsztyn, Poland
| | - Roni Nugraha
- Molecular Allergy Research Laboratory, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland, Australia
- Department of Aquatic Product Technology, Faculty of Fisheries and Marine Science, IPB University, Bogor, Indonesia
| | - Markus Ollert
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Odense Research Center for Anaphylaxis, University of Southern Denmark, Odense, Denmark
| | - Kati Palosuo
- Department of Allergology, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | | | - Sarita Ulhas Patil
- Division of Rheumatology, Allergy and Immunology, Departments of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Division of Allergy and Immunology, Department of Pediatrics, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Thomas Platts-Mills
- Division of Allergy and Clinical Immunology, University of Virginia, Charlottesville, Virginia, USA
| | | | - Pascal Poncet
- Institut Pasteur, Immunology Department, Paris, France
- Allergy & Environment Research Team Armand Trousseau Children Hospital, APHP, Paris, France
| | - Ekaterina Potapova
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Lars K Poulsen
- Allergy Clinic, Department of Dermatology and Allergy, Copenhagen University Hospital-Herlev and Gentofte, Copenhagen, Denmark
| | - Christian Radauer
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - Suzana Radulovic
- Department of Women and Children's Health (Pediatric Allergy), School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
- Children's Allergy Service, Evelina London, Guy's and St Thomas' Hospital, London, United Kingdom
| | - Monika Raulf
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr- Universität Bochum, Bochum, Germany
| | - Pierre Rougé
- UMR 152 PharmaDev, IRD, Université Paul Sabatier, Faculté de Pharmacie, Toulouse, France
| | - Joaquin Sastre
- Allergy Service, Fundación Jiménez Díaz; CIBER de Enfermedades Respiratorias (CIBERES); Faculty of Medicine, Universidad Autonoma de Madrid, Madrid, Spain
| | - Sakura Sato
- Allergy Department, 2nd Paediatric Clinic, National and Kapodistrian University of Athens, Athens, Greece
| | - Enrico Scala
- Clinical and Laboratory Molecular Allergy Unit - IDI- IRCCS, Fondazione L M Monti Rome, Rome, Italy
| | - Johannes M Schmid
- Department of Respiratory Diseases and Allergy, Aarhus University Hospital, Aarhus, Denmark
| | - Peter Schmid-Grendelmeier
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland
- Christine Kühne Center for Allergy Research and Education CK-CARE, Davos, Switzerland
| | - Denise Schrama
- Centre of Marine Sciences (CCMAR), Universidade do Algarve, Faro, Portugal
| | - Hélène Sénéchal
- Allergy & Environment Research Team Armand Trousseau Children Hospital, APHP, Paris, France
| | - Claudia Traidl-Hoffmann
- Christine Kühne Center for Allergy Research and Education CK-CARE, Davos, Switzerland
- Department of Environmental Medicine, Faculty of Medicine, University of Augsburg, Augsburg, Germany
| | - Marcela Valverde-Monge
- Allergy Service, Fundación Jiménez Díaz; CIBER de Enfermedades Respiratorias (CIBERES); Faculty of Medicine, Universidad Autonoma de Madrid, Madrid, Spain
| | - Marianne van Hage
- Department of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Ronald van Ree
- Department of Experimental Immunology and Department of Otorhinolaryngology, Amsterdam University Medical Centers, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Kitty Verhoeckx
- Department of Immunology and Dermatology/ Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Stefan Vieths
- Division of Allergology, Paul-Ehrlich-Institut, Langen, Germany
| | - Magnus Wickman
- Department of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Josefina Zakzuk
- Institute for Immunological Research, University of Cartagena, Cartagena de Indias, Colombia, Colombia
| | - Paolo M Matricardi
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany
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8
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Özuygur Ermis SS, Borres MP, Basna R, Ekerljung L, Malmhäll C, Goksör E, Wennergren G, Rådinger M, Lötvall J, Lundbäck B, Kankaanranta H, Nwaru BI. Sensitization to molecular dog allergens in an adult population: Results from the West Sweden Asthma Study. Clin Exp Allergy 2023; 53:88-104. [PMID: 35984703 PMCID: PMC10087160 DOI: 10.1111/cea.14216] [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] [Received: 04/04/2022] [Revised: 07/19/2022] [Accepted: 08/15/2022] [Indexed: 01/24/2023]
Abstract
BACKGROUND As the prevalence of dog allergy rises, component resolved diagnosis might improve the diagnosis, understanding of the clinical outcomes and the effectiveness of immunotherapy. Considering the paucity of data in adults, the current study characterized the patterns of sensitization to dog molecular allergens in an adult population. METHODS Data were derived from the West Sweden Asthma Study, a population-based and representative sample of adults from western Sweden. Of the 2006 subjects clinically examined, 313 participants sensitized to whole dog allergen extract were measured for specific immunoglobulin E (sIgE) levels to Can f 1, Can f 2, Can f 3, Can f 4, Can f 5 and Can f 6 using ImmunoCAP™. Polysensitization was defined as sensitization to ≥3 components. Overlapping sensitization was defined as having concomitant sensitization to at least two dog molecular allergen families (lipocalin, albumin or prostatic kallikrein). RESULTS Of 313, 218 (70%) subjects tested positive to at least one dog allergen component. Sensitization to Can f 1 (43%) was the most common, followed by Can f 5 (33%) among molecular allergens, while sensitization to lipocalins (56%) was the most common among component families. Polysensitization was found in 22% of all participants and was more common in participants with than in those without asthma. Subjects with asthma were less likely to be monosensitized to Can f 5 than those without asthma. Subjects with asthma had higher IgE levels of Can f 3, Can f 4 and Can f 6 than those without asthma. Overlapping sensitizations also differed between those with asthma and allergic rhinitis and those without. CONCLUSION Increased knowledge about the sensitization patterns of dog allergen components can aid in defining their role in asthma and rhinitis. In complex clinical cases of dog allergy, a detailed analysis of dog allergen components can provide additional information on the nature of sensitization.
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Affiliation(s)
- Saliha Selin Özuygur Ermis
- Krefting Research Centre, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Respiratory Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Magnus P Borres
- ImmunoDiagnostics, Thermo Fisher Scientific, Uppsala, Sweden.,Department of Maternal and Child Health, Uppsala University, Uppsala, Sweden
| | - Rani Basna
- Krefting Research Centre, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Linda Ekerljung
- Krefting Research Centre, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Carina Malmhäll
- Krefting Research Centre, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Emma Goksör
- Department of Pediatrics, University of Gothenburg, Queen Silvia Children's Hospital, Gothenburg, Sweden
| | - Göran Wennergren
- Department of Pediatrics, University of Gothenburg, Queen Silvia Children's Hospital, Gothenburg, Sweden
| | - Madeleine Rådinger
- Krefting Research Centre, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Jan Lötvall
- Krefting Research Centre, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Bo Lundbäck
- Krefting Research Centre, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Hannu Kankaanranta
- Krefting Research Centre, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland.,Department of Respiratory Medicine, Seinäjoki Central Hospital, Seinäjoki, Finland
| | - Bright I Nwaru
- Krefting Research Centre, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Wallenberg Centre for Molecular and Translational Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
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9
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Janssen-Weets B, Kerff F, Swiontek K, Kler S, Czolk R, Revets D, Kuehn A, Bindslev-Jensen C, Ollert M, Hilger C. Mammalian derived lipocalin and secretoglobin respiratory allergens strongly bind ligands with potentially immune modulating properties. FRONTIERS IN ALLERGY 2022; 3:958711. [PMID: 35991307 PMCID: PMC9385959 DOI: 10.3389/falgy.2022.958711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 07/12/2022] [Indexed: 11/13/2022] Open
Abstract
Allergens from furry animals frequently cause sensitization and respiratory allergic diseases. Most relevant mammalian respiratory allergens belong either to the protein family of lipocalins or secretoglobins. Their mechanism of sensitization remains largely unresolved. Mammalian lipocalin and secretoglobin allergens are associated with a function in chemical communication that involves abundant secretion into the environment, high stability and the ability to transport small volatile compounds. These properties are likely to contribute concomitantly to their allergenic potential. In this study, we aim to further elucidate the physiological function of lipocalin and secretoglobin allergens and link it to their sensitizing capacity, by analyzing their ligand-binding characteristics. We produced eight major mammalian respiratory allergens from four pet species in E.coli and compared their ligand-binding affinities to forty-nine ligands of different chemical classes by using a fluorescence-quenching assay. Furthermore, we solved the crystal-structure of the major guinea pig allergen Cav p 1, a typical lipocalin. Recombinant lipocalin and secretoglobin allergens are of high thermal stability with melting temperatures ranging from 65 to 90°C and strongly bind ligands with dissociation constants in the low micromolar range, particularly fatty acids, fatty alcohols and the terpene alcohol farnesol, that are associated with potential semiochemical and/or immune-modulating functions. Through the systematic screening of respiratory mammalian lipocalin and secretoglobin allergens with a large panel of potential ligands, we observed that total amino acid composition, as well as cavity shape and volume direct affinities to ligands of different chemical classes. Therefore, we were able to categorize lipocalin allergens over their ligand-binding profile into three sub-groups of a lipocalin clade that is associated with functions in chemical communication, thus strengthening the function of major mammalian respiratory allergens as semiochemical carriers. The promiscuous binding capability of hydrophobic ligands from environmental sources warrants further investigation regarding their impact on a molecule's allergenicity.
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Affiliation(s)
- Bente Janssen-Weets
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Department of Dermatology and Allergy Center, Odense Research Center for Anaphylaxis, University of Southern Denmark, Odense, Denmark
| | - Frédéric Kerff
- Laboratory of Crystallography, Center for Protein Engineering-InBioS, University of Liège, Liège, Belgium
| | - Kyra Swiontek
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Stéphanie Kler
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Rebecca Czolk
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Faculty of Science, Technology and Medicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Dominique Revets
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Annette Kuehn
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Carsten Bindslev-Jensen
- Department of Dermatology and Allergy Center, Odense Research Center for Anaphylaxis, University of Southern Denmark, Odense, Denmark
| | - Markus Ollert
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Department of Dermatology and Allergy Center, Odense Research Center for Anaphylaxis, University of Southern Denmark, Odense, Denmark
| | - Christiane Hilger
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- *Correspondence: Christiane Hilger
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10
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Nakatsuji M, Sugiura K, Suda K, Sakurai M, Ubatani M, Muroya H, Okubo R, Noguchi R, Kamata Y, Fukutomi Y, Ishibashi O, Nishimura S, Inui T. Structure-based prediction of the IgE epitopes of the major dog allergen Can f 1. FEBS J 2021; 289:1668-1679. [PMID: 34699686 DOI: 10.1111/febs.16252] [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: 06/23/2021] [Revised: 10/10/2021] [Accepted: 10/25/2021] [Indexed: 11/28/2022]
Abstract
Allergy to dogs has become increasingly prominent worldwide. Seven dog allergens have been identified, including Canis familiaris allergen 1-7 (Can f 1-7). Although Can f 1 is a major dog allergen sensitized to 50-75% of dog-allergic subjects, its IgE epitopes have not been identified. The structural analysis of an allergen is important to identify conformational epitopes. In this study, we generated a recombinant Can f 1 protein and determined its crystal structure using X-ray crystallography. Can f 1 had a typical lipocalin fold, which is composed of an eight-stranded β-barrel and α-helix, and has high similarity to Can f 2, Can f 4, and Can f 6 in overall structure. However, the localizations of surface charges on these proteins were quite different. Based on sequence alignment and tertiary structure, we predicted five critical residues (His86, Glu98, Arg111, Glu138, and Arg152) for the IgE epitopes. The relevance of these residues to IgE reactivity was assessed by generating Can f 1 mutants with these residues substituted for alanine. Although the effects of the mutation on IgE binding depended on the sera of dog-allergic patients, H86A and R152A mutants showed reduced IgE reactivity compared with wild-type Can f 1. These results suggest that Can f 1 residues His86 and Arg152 are candidates for the IgE conformational epitope.
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Affiliation(s)
- Masatoshi Nakatsuji
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Keisuke Sugiura
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Keisuke Suda
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Michiko Sakurai
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Miki Ubatani
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Haruka Muroya
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Rina Okubo
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Ryo Noguchi
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Yoichi Kamata
- Department of Food and Nutrition, Senri Kinran University, Suita, Osaka, Japan
| | - Yuma Fukutomi
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Sagamihara, Kanagawa, Japan
| | - Osamu Ishibashi
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Shigenori Nishimura
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Takashi Inui
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka, Japan
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11
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Chruszcz M, Chew FT, Hoffmann‐Sommergruber K, Hurlburt BK, Mueller GA, Pomés A, Rouvinen J, Villalba M, Wöhrl BM, Breiteneder H. Allergens and their associated small molecule ligands-their dual role in sensitization. Allergy 2021; 76:2367-2382. [PMID: 33866585 PMCID: PMC8286345 DOI: 10.1111/all.14861] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 04/07/2021] [Accepted: 04/10/2021] [Indexed: 02/06/2023]
Abstract
Many allergens feature hydrophobic cavities that allow the binding of primarily hydrophobic small‐molecule ligands. Ligand‐binding specificities can be strict or promiscuous. Serum albumins from mammals and birds can assume multiple conformations that facilitate the binding of a broad spectrum of compounds. Pollen and plant food allergens of the family 10 of pathogenesis‐related proteins bind a variety of small molecules such as glycosylated flavonoid derivatives, flavonoids, cytokinins, and steroids in vitro. However, their natural ligand binding was reported to be highly specific. Insect and mammalian lipocalins transport odorants, pheromones, catecholamines, and fatty acids with a similar level of specificity, while the food allergen β‐lactoglobulin from cow's milk is notably more promiscuous. Non‐specific lipid transfer proteins from pollen and plant foods bind a wide variety of lipids, from phospholipids to fatty acids, as well as sterols and prostaglandin B2, aided by the high plasticity and flexibility displayed by their lipid‐binding cavities. Ligands increase the stability of allergens to thermal and/or proteolytic degradation. They can also act as immunomodulatory agents that favor a Th2 polarization. In summary, ligand‐binding allergens expose the immune system to a variety of biologically active compounds whose impact on the sensitization process has not been well studied thus far.
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Affiliation(s)
- Maksymilian Chruszcz
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC USA
| | - Fook Tim Chew
- Department of Biological Sciences National University of Singapore Singapore
| | - Karin Hoffmann‐Sommergruber
- Division of Medical Biotechnology Department of Pathophysiology and Allergy Research Medical University of Vienna Vienna Austria
| | - Barry K. Hurlburt
- Agricultural Research Service Southern Regional Research Center US Department of Agriculture New Orleans LA USA
| | - Geoffrey A. Mueller
- National Institute of Environmental Health Sciences National Institutes of Health Research Triangle Park NC USA
| | - Anna Pomés
- Indoor Biotechnologies, Inc. Charlottesville VA USA
| | - Juha Rouvinen
- Department of Chemistry University of Eastern Finland Joensuu Finland
| | - Mayte Villalba
- Department of Biochemistry and Molecular Biology Universidad Complutense de Madrid Madrid Spain
| | | | - Heimo Breiteneder
- Division of Medical Biotechnology Department of Pathophysiology and Allergy Research Medical University of Vienna Vienna Austria
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12
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Habeler M, Redl B. Phage-display reveals interaction of lipocalin allergen Can f 1 with a peptide resembling the antigen binding region of a human γδT-cell receptor. Biol Chem 2021; 402:433-437. [PMID: 33938175 PMCID: PMC10883907 DOI: 10.1515/hsz-2020-0185] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 08/24/2020] [Indexed: 02/04/2023]
Abstract
Although some progress has been achieved in understanding certain aspects of the allergenic mechanism of animal lipocalins, they still remain largely enigmatic. One possibility to unravel this property is to investigate their interaction with components of the immune system. Since these components are highly complex we intended to use a high-throughput technology for this purpose. Therefore, we used phage-display of a random peptide library for panning against the dog allergen Can f 1. By this method we identified a Can f 1 binding peptide corresponding to the antigen-binding site of a putative γδT-cell receptor. Additional biochemical investigations confirmed this interaction.
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Affiliation(s)
- Matthias Habeler
- Institute of Molecular Biology, Medical University Innsbruck, Innrain 80, A-6020 Innsbruck, Austria
| | - Bernhard Redl
- Institute of Molecular Biology, Medical University Innsbruck, Innrain 80, A-6020 Innsbruck, Austria
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13
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Schoos AMM, Nwaru BI, Borres MP. Component-resolved diagnostics in pet allergy: Current perspectives and future directions. J Allergy Clin Immunol 2021; 147:1164-1173. [PMID: 33444632 DOI: 10.1016/j.jaci.2020.12.640] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/30/2020] [Accepted: 12/23/2020] [Indexed: 12/14/2022]
Abstract
Furry mammals kept as pets are important allergen sources. The prevalence of sensitization to dander from various animals appears to be increasing worldwide. Several mammalian allergens from diverse species and distinct protein families have been characterized, and some are available for component-resolved diagnostics (CRD). This review presents an overview of mammalian aeroallergens, with a focus on cat, dog, and horse allergens. The potential of CRD in fine-tuning the diagnostic workup following traditional methods based on whole- allergen extracts and allergen immunotherapy is discussed. The review highlights the clinical utility of CRD, particularly as a marker/predictor of increased asthma risk and disease severity. Finally, several perspectives of the future implications of CRD are offered in the context of furry animal allergens.
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Affiliation(s)
- Ann-Marie M Schoos
- COpenhagen Prospective Studies on Asthma in Childhood (COPSAC), Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark; Department of Pediatrics, Slagelse Sygehus, Slagelse, Denmark.
| | - Bright I Nwaru
- Krefting Research Centre, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden; Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Magnus P Borres
- Thermo Fisher Scientific, Uppsala, Sweden; Department of Maternal and Child Health, Uppsala University, Uppsala, Sweden
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14
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Are Physicochemical Properties Shaping the Allergenic Potency of Animal Allergens? Clin Rev Allergy Immunol 2021; 62:1-36. [DOI: 10.1007/s12016-020-08826-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2020] [Indexed: 12/31/2022]
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15
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Raulf M. Immediate-Type Hypersensitivity by Occupational Materials. Contact Dermatitis 2021. [DOI: 10.1007/978-3-030-36335-2_73] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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17
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Čelakovská J, Bukač J, Vaňková R, Cermakova E, Krcmova I, Krejsek J, Andrýs C. Cluster analysis of molecular components in 100 patients suffering from atopic dermatitis according to the ISAC Multiplex testing. FOOD AGR IMMUNOL 2020. [DOI: 10.1080/09540105.2020.1776224] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- J. Čelakovská
- Department of Dermatology and Venereology, Faculty Hospital and Medical Faculty of Charles University, Hradec Králové, Czech Republic
| | - J. Bukač
- Department of Medical Biophysic, Medical Faculty of Charles University, Hradec Králové, Czech republic
| | - R. Vaňková
- Department of Clinical Immunology and Allergy, Faculty Hospital and Medical Faculty of Charles University, Hradec Králové, Czech Republic
| | - E. Cermakova
- Department of Medical Biophysic, Medical Faculty of Charles University, Hradec Králové, Czech republic
| | - I. Krcmova
- Department of Clinical Immunology and Allergy, Faculty Hospital and Medical Faculty of Charles University, Hradec Králové, Czech Republic
| | - J. Krejsek
- Department of Clinical Immunology and Allergy, Faculty Hospital and Medical Faculty of Charles University, Hradec Králové, Czech Republic
| | - C. Andrýs
- Department of Clinical Immunology and Allergy, Faculty Hospital and Medical Faculty of Charles University, Hradec Králové, Czech Republic
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18
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Clayton GM, White J, Lee S, Kappler JW, Chan SK. Structural characteristics of lipocalin allergens: Crystal structure of the immunogenic dog allergen Can f 6. PLoS One 2019; 14:e0213052. [PMID: 31525203 PMCID: PMC6746357 DOI: 10.1371/journal.pone.0213052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 08/13/2019] [Indexed: 01/30/2023] Open
Abstract
Lipocalins represent the most important protein family of the mammalian respiratory allergens. Four of the seven named dog allergens are lipocalins: Can f 1, Can f 2, Can f 4, and Can f 6. We present the structure of Can f 6 along with data on the biophysical and biological activity of this protein in comparison with other animal lipocalins. The Can f 6 structure displays the classic lipocalin calyx-shaped ligand binding cavity within a central β-barrel similar to other lipocalins. Despite low sequence identity between the different dog lipocalin proteins, there is a high degree of structural similarity. On the other hand, Can f 6 has a similar primary sequence to cat, horse, mouse lipocalins as well as a structure that may underlie their cross reactivity. Interestingly, the entrance to the ligand binding pocket is capped by a His instead of the usually seen Tyr that may help select its natural ligand binding partner. Our highly pure recombinant Can f 6 is able to bind to human IgE (hIgE) demonstrating biological antigenicity.
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Affiliation(s)
- Gina M. Clayton
- Department of Biomedical Research, National Jewish Health, Denver, Colorado, United States of America
- Program in Structural Biology and Biochemistry, University of Colorado Denver School of Medicine, Aurora, Colorado, United States of America
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver School of Medicine, Aurora, Colorado, United States of America
| | - Janice White
- Department of Biomedical Research, National Jewish Health, Denver, Colorado, United States of America
| | - Schuyler Lee
- Department of Biomedical Research, National Jewish Health, Denver, Colorado, United States of America
| | - John W. Kappler
- Department of Biomedical Research, National Jewish Health, Denver, Colorado, United States of America
- Program in Structural Biology and Biochemistry, University of Colorado Denver School of Medicine, Aurora, Colorado, United States of America
- Department of Immunology and Microbiology, University of Colorado Denver School of Medicine, Aurora, Colorado, United States of America
| | - Sanny K. Chan
- Department of Biomedical Research, National Jewish Health, Denver, Colorado, United States of America
- Department of Pediatrics, University of Colorado Denver School of Medicine, Aurora, Colorado, United States of America
- Division of Pediatric Allergy-Immunology, National Jewish Health, Denver, Colorado, United States of America
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19
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Jappe U, Schwager C, Schromm AB, González Roldán N, Stein K, Heine H, Duda KA. Lipophilic Allergens, Different Modes of Allergen-Lipid Interaction and Their Impact on Asthma and Allergy. Front Immunol 2019; 10:122. [PMID: 30837983 PMCID: PMC6382701 DOI: 10.3389/fimmu.2019.00122] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 01/15/2019] [Indexed: 12/12/2022] Open
Abstract
Molecular allergology research has provided valuable information on the structure and function of single allergenic molecules. There are several allergens in food and inhalant allergen sources that are able to interact with lipid ligands via different structural features: hydrophobic pockets, hydrophobic cavities, or specialized domains. For only a few of these allergens information on their associated ligands is already available. Several of the allergens are clinically relevant, so that it is highly probable that the individual structural features with which they interact with lipids have a direct effect on their allergenic potential, and thus on allergy development. There is some evidence for a protective effect of lipids delaying the enzymatic digestion of the peanut (Arachis hypogaea) allergen Ara h 8 (hydrophobic pocket), probably allowing this molecule to get to the intestinal immune system intact (sensitization). Oleosins from different food allergen sources are part of lipid storage organelles and potential marker allergens for the severity of the allergic reaction. House dust mite (HDM), is more often associated with allergic asthma than other sources of inhalant allergens. In particular, lipid-associated allergens from Dermatophagoides pteronyssinus which are Der p 2, Der p 5, Der p 7, Der p 13, Der p 14, and Der p 21 have been reported to be associated with severe allergic reactions and respiratory symptoms such as asthma. The exact mechanism of interaction of these allergens with lipids still has to be elucidated. Apart from single allergens glycolipids have been shown to directly induce allergic inflammation. Several-in parts conflicting-data exist on the lipid (and allergen) and toll-like receptor interactions. For only few single allergens mechanistic studies were performed on their interaction with the air-liquid interface of the lungs, in particular with the surfactant components SP-A and SP-D. The increasing knowledge on protein-lipid-interaction for lipophilic and hydrophobic food and inhalant allergens on the basis of their particular structure, of their capacity to be integral part of membranes (like the oleosins), and their ability to interact with membranes, surfactant components, and transport lipids (like the lipid transfer proteins) are essential to eventually clarify allergy and asthma development.
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Affiliation(s)
- Uta Jappe
- Division of Clinical and Molecular Allergology, Research Center Borstel, Leibniz Lung Center, Airway Research Center North, German Center for Lung Research, Borstel, Germany
- Interdisciplinary Allergy Outpatient Clinic, Department of Pneumology, University of Luebeck, Borstel, Germany
| | - Christian Schwager
- Division of Clinical and Molecular Allergology, Research Center Borstel, Leibniz Lung Center, Airway Research Center North, German Center for Lung Research, Borstel, Germany
| | - Andra B. Schromm
- Division of Immunobiophysics, Research Center Borstel, Leibniz Lung Center, Borstel, Germany
| | - Nestor González Roldán
- Junior Research Group of Allergobiochemistry, Research Center Borstel, Leibniz Lung Center, Airway Research Center North, German Center for Lung Research, Borstel, Germany
| | - Karina Stein
- Division of Innate Immunity, Research Center Borstel, Leibniz Lung Center, Airway Research Center North, German Center for Lung Research, Borstel, Germany
| | - Holger Heine
- Division of Innate Immunity, Research Center Borstel, Leibniz Lung Center, Airway Research Center North, German Center for Lung Research, Borstel, Germany
| | - Katarzyna A. Duda
- Junior Research Group of Allergobiochemistry, Research Center Borstel, Leibniz Lung Center, Airway Research Center North, German Center for Lung Research, Borstel, Germany
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Crystal structure of the dog allergen Can f 6 and structure-based implications of its cross-reactivity with the cat allergen Fel d 4. Sci Rep 2019. [PMID: 30728436 DOI: 10.1038/s41598-018-38134-w.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Several dog allergens cause allergic reactions in humans worldwide. Seven distinct dog allergens, designated Canis familiaris allergen 1 to 7 (Can f 1-Can f 7), have been identified thus far. Can f 6 shows high sequence similarity and cross-reactivity with Fel d 4 and Equ c 1, major cat and horse allergens, respectively. This study was conducted on the allergenic epitopes of Can f 6 based on its structural characterization. We demonstrated that sera from 18 out of 38 (47%) dog-sensitized patients reacted to recombinant Can f 6 protein (rCan f 6). We then determined the crystal structure of rCan f 6 by X-ray crystallography, which exhibited a conserved tertiary structural architecture found in lipocalin family proteins. Based on the tertiary structure and sequence similarities with Fel d 4 and Equ c 1, we predicted three IgE-recognizing sites that are possibly involved in cross-reactivity. Substituting three successive amino acids in these sites to triple alanine decreased IgE reactivity to the allergen. However, the degree of reduction in IgE reactivity largely depended on the site mutated and the serum used, suggesting that Can f 6 is a polyvalent allergen containing multiple epitopes and Can f 6-reactive sera contain varied amounts of IgE recognising individual Can f 6 epitopes including those predicted in this study. We also demonstrated that the predicted epitopes are partly involved in IgE cross-reactivity to Fel d 4. Interestingly, the effect of the mutation depended on whether the protein was structured or denatured, indicating that the bona fide tertiary structure of Can f 6 is essential in determining its IgE epitopes.
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21
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Yamamoto K, Ishibashi O, Sugiura K, Ubatani M, Sakaguchi M, Nakatsuji M, Shimamoto S, Noda M, Uchiyama S, Fukutomi Y, Nishimura S, Inui T. Crystal structure of the dog allergen Can f 6 and structure-based implications of its cross-reactivity with the cat allergen Fel d 4. Sci Rep 2019; 9:1503. [PMID: 30728436 PMCID: PMC6365566 DOI: 10.1038/s41598-018-38134-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 12/18/2018] [Indexed: 01/07/2023] Open
Abstract
Several dog allergens cause allergic reactions in humans worldwide. Seven distinct dog allergens, designated Canis familiaris allergen 1 to 7 (Can f 1-Can f 7), have been identified thus far. Can f 6 shows high sequence similarity and cross-reactivity with Fel d 4 and Equ c 1, major cat and horse allergens, respectively. This study was conducted on the allergenic epitopes of Can f 6 based on its structural characterization. We demonstrated that sera from 18 out of 38 (47%) dog-sensitized patients reacted to recombinant Can f 6 protein (rCan f 6). We then determined the crystal structure of rCan f 6 by X-ray crystallography, which exhibited a conserved tertiary structural architecture found in lipocalin family proteins. Based on the tertiary structure and sequence similarities with Fel d 4 and Equ c 1, we predicted three IgE-recognizing sites that are possibly involved in cross-reactivity. Substituting three successive amino acids in these sites to triple alanine decreased IgE reactivity to the allergen. However, the degree of reduction in IgE reactivity largely depended on the site mutated and the serum used, suggesting that Can f 6 is a polyvalent allergen containing multiple epitopes and Can f 6-reactive sera contain varied amounts of IgE recognising individual Can f 6 epitopes including those predicted in this study. We also demonstrated that the predicted epitopes are partly involved in IgE cross-reactivity to Fel d 4. Interestingly, the effect of the mutation depended on whether the protein was structured or denatured, indicating that the bona fide tertiary structure of Can f 6 is essential in determining its IgE epitopes.
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Affiliation(s)
- Kenji Yamamoto
- 0000 0001 0676 0594grid.261455.1Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, 599-8531 Japan
| | - Osamu Ishibashi
- 0000 0001 0676 0594grid.261455.1Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, 599-8531 Japan
| | - Keisuke Sugiura
- 0000 0001 0676 0594grid.261455.1Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, 599-8531 Japan
| | - Miki Ubatani
- 0000 0001 0676 0594grid.261455.1Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, 599-8531 Japan
| | - Masaya Sakaguchi
- 0000 0001 0676 0594grid.261455.1Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, 599-8531 Japan
| | - Masatoshi Nakatsuji
- 0000 0001 0676 0594grid.261455.1Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, 599-8531 Japan
| | - Shigeru Shimamoto
- 0000 0004 1936 9967grid.258622.9Faculty of science and engineering, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, 577-8502 Japan
| | - Masanori Noda
- 0000 0004 0373 3971grid.136593.bDepartment of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, 565-0871 Japan
| | - Susumu Uchiyama
- 0000 0004 0373 3971grid.136593.bDepartment of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, 565-0871 Japan
| | - Yuma Fukutomi
- 0000 0004 0642 7451grid.415689.7Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, 18-1 Sakuradai, Minami-ku, Sagamihara, 252-0392 Japan
| | - Shigenori Nishimura
- 0000 0001 0676 0594grid.261455.1Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, 599-8531 Japan
| | - Takashi Inui
- 0000 0001 0676 0594grid.261455.1Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, 599-8531 Japan
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TOSA N, YOSHIMATSU K, TAKAHASHI M, ARIKAWA J. Comparison of immune response in mice sensitized to an animal allergen, Can f 1, and to a food allergen, ovalbumin. Biomed Res 2019; 40:9-15. [DOI: 10.2220/biomedres.40.9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Noriko TOSA
- Institute for Animal Experimentation, Hokkaido University
| | - Kumiko YOSHIMATSU
- Department of Microbiology, Faculty of Medicine, Hokkaido University
| | - Motoko TAKAHASHI
- Department of Biochemistry, Sapporo Medical University School of Medicine
| | - Jiro ARIKAWA
- Institute for Animal Experimentation, Hokkaido University
- Department of Microbiology, Faculty of Medicine, Hokkaido University
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23
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Raulf M. Immediate-Type Hypersensitivity by Occupational Materials. Contact Dermatitis 2019. [DOI: 10.1007/978-3-319-72451-5_73-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Chruszcz M, Kapingidza AB, Dolamore C, Kowal K. A robust method for the estimation and visualization of IgE cross-reactivity likelihood between allergens belonging to the same protein family. PLoS One 2018; 13:e0208276. [PMID: 30496313 PMCID: PMC6264518 DOI: 10.1371/journal.pone.0208276] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 11/14/2018] [Indexed: 12/11/2022] Open
Abstract
Among the vast number of identified protein families, allergens emanate from relatively few families which translates to only a small fraction of identified protein families. In allergy diagnostics and immunotherapy, interactions between immunoglobulin E and allergens are crucial because the formation of an allergen-antibody complex is necessary for triggering an allergic reaction. In allergic diseases, there is a phenomenon known as cross-reactivity. Cross-reactivity describes a situation where an individual has produced antibodies against a particular allergenic protein, but said antibodies fail to discriminate between the original sensitizer and other similar proteins that usually belong to the same family. To expound the concept of cross-reactivity, this study examines ten protein families that include allergens selected specifically for the analysis of cross-reactivity. The selected allergen families had at least 13 representative proteins, overall folds that differ significantly between families, and include relevant allergens with various potencies. The selected allergens were analyzed using information on sequence similarities and identities between members of the families as well as reports on clinically relevant cross-reactivities. Based on our analysis, we propose to introduce a new A-RISC index (Allergens’–Relative Identity, Similarity and Cross-reactivity) which describes homology between two allergens belonging to the same protein family and is used to predict the likelihood of cross-reactivity between them. Information on sequence similarities and identities, as well as on the values of the proposed A-RISC index is used to introduce four categories describing a risk of a cross-reactive reaction, namely: high, medium-high, medium-low and low. The proposed approach can facilitate analysis in component-resolved allergy diagnostics, generation of avoidance guidelines for allergic individuals, and help with the design of immunotherapy.
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Affiliation(s)
- Maksymilian Chruszcz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, United States of America
- * E-mail:
| | - A. Brenda Kapingidza
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, United States of America
| | - Coleman Dolamore
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, United States of America
| | - Krzysztof Kowal
- Department of Allergology and Internal Medicine, Medical University of Bialystok, Bialystok, Poland
- Department of Experimental Allergology and Immunology, Medical University of Bialystok, Bialystok, Poland
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Laboratory Animal Bite Anaphylaxis: A National Survey: Part 1: Case Series and Review of the Literature. J Occup Environ Med 2018; 59:728-738. [PMID: 28796663 DOI: 10.1097/jom.0000000000001005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE This study documents previously unreported cases of laboratory animal bite anaphylaxis in animal laboratory facilities in the United States. METHODS An online survey was e-mailed to designated institutional officials at laboratory animal facilities identified by the National Institutes of Health Office of Laboratory Animal Welfare. RESULTS One hundred ninety eight organizations responded and 15 organizations indicated that workers had experienced anaphylaxis following an animal bite. Case report forms were completed by nine of these institutions for 14 cases, 13 for rodent bites, and one involving a needlestick from a horse. In half of the cases involving rodents, there was no prior history of animal allergy. All workers had uncomplicated recoveries. Treatment, testing, and work restrictions varied across cases. CONCLUSIONS While uncommon, anaphylaxis from laboratory animal bites occurs more frequently than suggested by the literature.
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Abstract
PURPOSE OF REVIEW This review explores animal allergen exposure in research laboratories and other work settings, focusing on causes and prevention. RECENT FINDINGS (1) Consistent with the hygiene hypothesis, there is new evidence that early childhood exposure to pets produces changes in the gut microbiome that likely lead to a lower risk of allergy. (2) Anaphylaxis from laboratory animal bites occurs more frequently than suggested by prior literature. (3) Animal allergens represent an occupational hazard in a wide variety of work settings ranging from fields that work with animals to public settings like schools and public transportation where allergens are brought into or are present in the workplace. Exposure to animal allergens can result in allergy, asthma, and anaphylaxis. Animal allergy has been most studied in the research laboratory setting, where exposure reduction can prevent the development of allergy. Similar prevention approaches need to be considered for other animal work environments and in all settings where animal allergens are present.
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Abstract
PURPOSE OF REVIEW Numerous clinically relevant allergenic molecules enhance the performance of specific (s) IgE tests and improve the specificity of allergy diagnosis. This review aimed to summarize our current knowledge of the high-molecular-weight allergens involved in the development of occupational asthma and rhinitis and to critically analyze the contribution of component-resolved diagnosis in the management of these conditions. RECENT FINDINGS There is a lack of standardization and validation for most available extracts of occupational agents, and assessment of sIgE reactivity to occupational allergen components has been poorly investigated, with the notable exception of natural rubber latex (NRL) and wheat flour. In the case of NRL, the application of recombinant single allergens and amplification of natural extracts with stable recombinant allergens improved the test sensitivity. IgE-sensitization profile in patients with baker's asthma showed great interindividual variation, and extract-based diagnostic is still recommended. For other occupational allergens, it remains necessary to evaluate the relevance of single allergen molecules for the sensitization induced by occupational exposure. Progress has been made to characterize occupational allergens especially NRL and wheat, although there is still an unmet need to increase the knowledge of occupational allergens, to include standardized tools into routine diagnostic, and to evaluate their usefulness in clinical practice.
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Affiliation(s)
- Monika Raulf
- Institute of Prevention and Occupational Medicine of the German Social accident Insurance, Institute of the Ruhr-University Bochum (IPA), Bochum, Germany.
| | - Santiago Quirce
- Department of Allergy, Hospital La Paz Institute for Health Research (IdiPAZ) and CIBER of Respiratory diseases (CIBERES), Madrid, Spain
| | - Olivier Vandenplas
- Centre Hospitalier Universitaire UCL Namur, Department of Chest Medicine, Université Catholique de Louvain, Yvoir, Belgium
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Abstract
PURPOSE OF REVIEW Allergen extracts are still widely used in allergy diagnosis as they are regarded as sensitive screening tools despite the fact that they may lack some minor allergens. Another drawback of extracts is their low specificity, which is due to the presence of cross-reactive allergens. Progress in allergen identification has disclosed a number of allergenic molecules of homologous sequence and structure which are present in different animal species. This review summarizes recent advances in mammalian and fish allergen identification and focuses on their clinical relevance. RECENT FINDINGS Serum albumins and parvalbumins are well-known animal panallergens. More recently several members of the lipocalin family were found to be cross-reactive between furry animals whereas in fish, additional allergens, enolase, aldolase and collagen, were found to be important and cross-reactive allergens. New epidemiological studies have analysed the prevalence and clinical relevance of mammalian and fish components. Primary sensitization can be distinguished from cross-sensitization by using marker allergens. Although substantial progress has been made in allergen identification, only few markers are commercially available for routine clinical practice.
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Affiliation(s)
- Christiane Hilger
- Department of Infection and Immunity, Luxembourg Institute of Health, 29, rue Henri Koch, L-4354, Esch-sur-Alzette, Luxembourg.
| | - Marianne van Hage
- Immunology and Allergy Unit, Department of Medicine Solna, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
| | - Annette Kuehn
- Department of Infection and Immunity, Luxembourg Institute of Health, 29, rue Henri Koch, L-4354, Esch-sur-Alzette, Luxembourg
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Abstract
PURPOSE OF REVIEW To describe recent insights into how molecular diagnosis can improve indication and selection of suitable allergens for specific immunotherapy and increase the safety of this therapy. RECENT FINDINGS As specific allergen immunotherapy targets specific allergens, identification of the disease-eliciting allergen is a prerequisite for accurate prescription of treatment. In areas of complex sensitization to aeroallergens or in cases of hymenoptera venom allergy, the use of molecular diagnosis has demonstrated that it may lead to a change in indication and selection of allergens for immunotherapy in a large proportion of patients when compared with diagnosis based on skin prick testing and/or specific IgE determination with commercial extracts. These changes in immunotherapy prescription aided by molecular diagnosis have been demonstrated to be cost-effective in some scenarios. Certain patterns of sensitization to grass or olive pollen and bee allergens may identify patients with higher risk of adverse reaction during immunotherapy. SUMMARY Molecular diagnosis, when used with other tools and patients' clinical records, can help clinicians better to select the most appropriate patients and allergens for specific immunotherapy and, in some cases, predict the risk of adverse reactions. The pattern of sensitization to allergens could potentially predict the efficacy of allergen immunotherapy provided that these immunotherapy products contain a sufficient amount of these allergens. Nevertheless, multiplex assay remains a third-level approach, not to be used as screening method in current practice.
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Allergy to pets and new allergies to uncommon pets. Allergol Select 2017; 1:214-221. [PMID: 30402618 PMCID: PMC6040002 DOI: 10.5414/alx01842e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 02/22/2016] [Indexed: 12/16/2022] Open
Abstract
Abstract. Animal dander is an important source of respiratory allergens, and sensitization to allergens from cat and/or dog during childhood represents a risk factor for the development of asthma and rhinitis later in life. The identification and characterization of allergenic components is crucial to improve diagnosis and therapy in patients with allergy to pets. Allergens from furry animals belong to a restricted number of protein families, a large majority are lipocalins or albumins, some are secretoglobins or latherins. Animal dander contains cross-reactive molecules and current efforts aim at defining species-specific allergens that have a high diagnostic sensitivity. Component-resolved diagnosis allows to discriminate genuine sensitization from cross-sensitization. This review contains a detailed description of allergenic components of cat, dog, horse, and small mammalian pets. Sensitizations to exotic pets, a newly emerging issue, are also discussed.
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31
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Zahradnik E, Raulf M. Respiratory Allergens from Furred Mammals: Environmental and Occupational Exposure. Vet Sci 2017; 4:vetsci4030038. [PMID: 29056697 PMCID: PMC5644656 DOI: 10.3390/vetsci4030038] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 07/31/2017] [Accepted: 08/01/2017] [Indexed: 12/21/2022] Open
Abstract
Furry mammals kept as pets, farm and laboratory animals are important allergen sources. The prevalence of sensitization to furred mammals appears to be increasing worldwide. Several mammalian allergens from diverse species are well characterized with regard to their molecular structure and immunogenicity, and some are already available for component-resolved allergy diagnostics. The distribution of various mammalian allergens has been extensively studied during the past few decades. Animal allergens were found to be ubiquitous in the human environment, even in places where no animals reside, with concentrations differing considerably between locations and geographical regions. This review presents an overview of identified mammalian respiratory allergens classified according to protein families, and compiles the results of allergen exposure assessment studies conducted in different public and occupational environments.
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Affiliation(s)
- Eva Zahradnik
- Center of Allergology/Immunology, Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789 Bochum, Germany.
| | - Monika Raulf
- Center of Allergology/Immunology, Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789 Bochum, Germany.
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32
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Abstract
Furry mammals kept as pets, farm and laboratory animals are important allergen sources. The prevalence of sensitization to furred mammals appears to be increasing worldwide. Several mammalian allergens from diverse species are well characterized with regard to their molecular structure and immunogenicity, and some are already available for component-resolved allergy diagnostics. The distribution of various mammalian allergens has been extensively studied during the past few decades. Animal allergens were found to be ubiquitous in the human environment, even in places where no animals reside, with concentrations differing considerably between locations and geographical regions. This review presents an overview of identified mammalian respiratory allergens classified according to protein families, and compiles the results of allergen exposure assessment studies conducted in different public and occupational environments.
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Del Moral MG, Martínez-Naves E. The Role of Lipids in Development of Allergic Responses. Immune Netw 2017; 17:133-143. [PMID: 28680374 PMCID: PMC5484643 DOI: 10.4110/in.2017.17.3.133] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 03/15/2017] [Accepted: 03/16/2017] [Indexed: 01/22/2023] Open
Abstract
Most allergic diseases are caused by activation of Th2 type immune responses resulting in the production of specific IgE against proteins found in normally harmless substances such as pollen, mites, epithelia or food. Allergenic substances are composed, in addition to proteins, of other compounds such as carbohydrates and lipids. Those lipids are able to promote the development of Th2-type responses associated with allergy. There are lipids found in pollen, milk or insect venom that are specifically recognized by CD1 restricted unconventional T lymphocytes, which can promote allergic reactions. Furthermore, a large number of allergens are proteins containing hydrophobic parts that specifically bind lipids that are capable to favor allergenic immune responses. Also, lipids associated to substances like pollen, dander, epithelia or the bacteria can act on cells of the innate system, including dendritic cells, which in turn lead to the differentiation of Th2-type clones. Finally, lipids may also influence the ability of allergens to be exposed to the immune system within the oral, respiratory or intestinal mucosa where allergic response occurs with great frequency.
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Affiliation(s)
- Manuel Gómez Del Moral
- Department of Cell Biology, Complutense University School of Medicine, Madrid 28040, Spain
| | - Eduardo Martínez-Naves
- Department of Microbiology and Immunology, Complutense University School of Medicine, Madrid 28040, Spain
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Abstract
PURPOSE OF REVIEW The purpose of this review is to evaluate the most recent findings on indoor allergens and their impact on allergic diseases. RECENT FINDINGS Indoor allergens are present inside buildings (home, work environment, school), and given the chronic nature of the exposures, indoor allergies tend to be associated with the development of asthma. The most common indoor allergens are derived from dust mites, cockroaches, mammals (including wild rodents and pets), and fungi. The advent of molecular biology and proteomics has led to the identification, cloning, and expression of new indoor allergens, which have facilitated research to elucidate their role in allergic diseases. This review is an update on new allergens and their molecular features, together with the most recent reports on their avoidance for allergy prevention and their use for diagnosis and treatment. Research progress on indoor allergens will result in the development of new diagnostic tools and design of coherent strategies for immunotherapy.
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Affiliation(s)
- Anna Pomés
- Indoor Biotechnologies, Inc., 700 Harris Street, Charlottesville, VA, 22903, USA.
| | - Martin D Chapman
- Indoor Biotechnologies, Inc., 700 Harris Street, Charlottesville, VA, 22903, USA
| | - Sabina Wünschmann
- Indoor Biotechnologies, Inc., 700 Harris Street, Charlottesville, VA, 22903, USA
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Apostolovic D, Sánchez-Vidaurre S, Waden K, Curin M, Grundström J, Gafvelin G, Cirkovic Velickovic T, Grönlund H, Thomas WR, Valenta R, Hamsten C, van Hage M. The cat lipocalin Fel d 7 and its cross-reactivity with the dog lipocalin Can f 1. Allergy 2016; 71:1490-5. [PMID: 27289080 DOI: 10.1111/all.12955] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2016] [Indexed: 11/30/2022]
Abstract
We investigated the prevalence of sensitization to the cat lipocalin Fel d 7 among 140 cat-sensitized Swedish patients and elucidated its allergenic activity and cross-reactivity with the dog lipocalin Can f 1. Sixty-five of 140 patients had IgE to rFel d 7 whereof 60 also had IgE to rCan f 1. A moderate correlation between IgE levels to rFel d 7 and rCan f 1 was found. rFel d 7 activated basophils in vitro and inhibited IgE binding to rCan f 1 in 4 of 13 patients, whereas rCan f 1 inhibited IgE binding to rFel d 7 in 7 of 13 patients. Fel d 7 and Can f 1 showed high similarities in protein structure and epitopes in common were found using cross-reactive antisera. Fel d 7 is a common allergen in a Swedish cat-sensitized population that cross-reacts with Can f 1, and may contribute to symptoms in cat- but also in dog-allergic patients.
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Affiliation(s)
- D. Apostolovic
- Department of Medicine Solna, Immunology and Allergy Unit; Karolinska Institutet; and Karolinska University Hospital; Stockholm Sweden
| | - S. Sánchez-Vidaurre
- Department of Medicine Solna, Immunology and Allergy Unit; Karolinska Institutet; and Karolinska University Hospital; Stockholm Sweden
| | - K. Waden
- Department of Medicine Solna, Immunology and Allergy Unit; Karolinska Institutet; and Karolinska University Hospital; Stockholm Sweden
| | - M. Curin
- Division of Immunopathology; Department of Pathophysiology and Allergy Research; Center for Pathophysiology, Infectiology and Immunology; Medical University of Vienna; Vienna Austria
| | - J. Grundström
- Department of Medicine Solna, Immunology and Allergy Unit; Karolinska Institutet; and Karolinska University Hospital; Stockholm Sweden
| | - G. Gafvelin
- Department of Clinical Neuroscience; Therapeutic Immune Design Unit; Center for Molecular Medicine (CMM); Karolinska Institutet; Stockholm Sweden
| | - T. Cirkovic Velickovic
- Center of Excellence for Molecular Food Sciences; Faculty of Chemistry; University of Belgrade; Belgrade Serbia
| | - H. Grönlund
- Department of Clinical Neuroscience; Therapeutic Immune Design Unit; Center for Molecular Medicine (CMM); Karolinska Institutet; Stockholm Sweden
| | - W. R. Thomas
- Center for Child Health Research; Telethon Institute of Child Health Research; University of Western Australia; Perth WA Australia
| | - R. Valenta
- Division of Immunopathology; Department of Pathophysiology and Allergy Research; Center for Pathophysiology, Infectiology and Immunology; Medical University of Vienna; Vienna Austria
| | - C. Hamsten
- Department of Medicine Solna, Immunology and Allergy Unit; Karolinska Institutet; and Karolinska University Hospital; Stockholm Sweden
- Center for Inflammatory Diseases; Karolinska Institutet; Stockholm Sweden
| | - M. van Hage
- Department of Medicine Solna, Immunology and Allergy Unit; Karolinska Institutet; and Karolinska University Hospital; Stockholm Sweden
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Pomés A, Chapman MD, Wünschmann S. Indoor Allergens and Allergic Respiratory Disease. Curr Allergy Asthma Rep 2016. [PMID: 27184001 DOI: 10.1007/s11882-016-0622-9.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PURPOSE OF REVIEW The purpose of this review is to evaluate the most recent findings on indoor allergens and their impact on allergic diseases. RECENT FINDINGS Indoor allergens are present inside buildings (home, work environment, school), and given the chronic nature of the exposures, indoor allergies tend to be associated with the development of asthma. The most common indoor allergens are derived from dust mites, cockroaches, mammals (including wild rodents and pets), and fungi. The advent of molecular biology and proteomics has led to the identification, cloning, and expression of new indoor allergens, which have facilitated research to elucidate their role in allergic diseases. This review is an update on new allergens and their molecular features, together with the most recent reports on their avoidance for allergy prevention and their use for diagnosis and treatment. Research progress on indoor allergens will result in the development of new diagnostic tools and design of coherent strategies for immunotherapy.
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Affiliation(s)
- Anna Pomés
- Indoor Biotechnologies, Inc., 700 Harris Street, Charlottesville, VA, 22903, USA.
| | - Martin D Chapman
- Indoor Biotechnologies, Inc., 700 Harris Street, Charlottesville, VA, 22903, USA
| | - Sabina Wünschmann
- Indoor Biotechnologies, Inc., 700 Harris Street, Charlottesville, VA, 22903, USA
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37
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Allergen-Associated Immunomodulators: Modifying Allergy Outcome. Arch Immunol Ther Exp (Warsz) 2016; 64:339-47. [PMID: 27178664 DOI: 10.1007/s00005-016-0401-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 02/21/2016] [Indexed: 12/22/2022]
Abstract
The prevalence of allergies is increasing since mid twentieth century; however the underlying causes of this increase are not fully clear. Understanding the mechanism by which a harmless protein becomes an allergen provides us with the basis to prevent and treat these diseases. Although most studies on allergen immunogenicity have traditionally focused on structural properties of the proteins, it is increasingly clear that allergenicity cannot be determined only based on structural features of the allergenic proteins. In fact, allergens do not encounter human facings as isolated molecules but contained in complex mixtures of proteins, carbohydrates and lipids, such as pollen grains or foods. As a result, attention has lately been directed to examine whether allergen-associated molecules exhibit immune-regulatory properties. The present review aims to illustrate some examples of how non-protein molecules accompanying the allergen can modulate allergic responses.
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Matricardi PM, Kleine-Tebbe J, Hoffmann HJ, Valenta R, Hilger C, Hofmaier S, Aalberse RC, Agache I, Asero R, Ballmer-Weber B, Barber D, Beyer K, Biedermann T, Bilò MB, Blank S, Bohle B, Bosshard PP, Breiteneder H, Brough HA, Caraballo L, Caubet JC, Crameri R, Davies JM, Douladiris N, Ebisawa M, EIgenmann PA, Fernandez-Rivas M, Ferreira F, Gadermaier G, Glatz M, Hamilton RG, Hawranek T, Hellings P, Hoffmann-Sommergruber K, Jakob T, Jappe U, Jutel M, Kamath SD, Knol EF, Korosec P, Kuehn A, Lack G, Lopata AL, Mäkelä M, Morisset M, Niederberger V, Nowak-Węgrzyn AH, Papadopoulos NG, Pastorello EA, Pauli G, Platts-Mills T, Posa D, Poulsen LK, Raulf M, Sastre J, Scala E, Schmid JM, Schmid-Grendelmeier P, van Hage M, van Ree R, Vieths S, Weber R, Wickman M, Muraro A, Ollert M. EAACI Molecular Allergology User's Guide. Pediatr Allergy Immunol 2016; 27 Suppl 23:1-250. [PMID: 27288833 DOI: 10.1111/pai.12563] [Citation(s) in RCA: 512] [Impact Index Per Article: 64.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The availability of allergen molecules ('components') from several protein families has advanced our understanding of immunoglobulin E (IgE)-mediated responses and enabled 'component-resolved diagnosis' (CRD). The European Academy of Allergy and Clinical Immunology (EAACI) Molecular Allergology User's Guide (MAUG) provides comprehensive information on important allergens and describes the diagnostic options using CRD. Part A of the EAACI MAUG introduces allergen molecules, families, composition of extracts, databases, and diagnostic IgE, skin, and basophil tests. Singleplex and multiplex IgE assays with components improve both sensitivity for low-abundance allergens and analytical specificity; IgE to individual allergens can yield information on clinical risks and distinguish cross-reactivity from true primary sensitization. Part B discusses the clinical and molecular aspects of IgE-mediated allergies to foods (including nuts, seeds, legumes, fruits, vegetables, cereal grains, milk, egg, meat, fish, and shellfish), inhalants (pollen, mold spores, mites, and animal dander), and Hymenoptera venom. Diagnostic algorithms and short case histories provide useful information for the clinical workup of allergic individuals targeted for CRD. Part C covers protein families containing ubiquitous, highly cross-reactive panallergens from plant (lipid transfer proteins, polcalcins, PR-10, profilins) and animal sources (lipocalins, parvalbumins, serum albumins, tropomyosins) and explains their diagnostic and clinical utility. Part D lists 100 important allergen molecules. In conclusion, IgE-mediated reactions and allergic diseases, including allergic rhinoconjunctivitis, asthma, food reactions, and insect sting reactions, are discussed from a novel molecular perspective. The EAACI MAUG documents the rapid progression of molecular allergology from basic research to its integration into clinical practice, a quantum leap in the management of allergic patients.
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Affiliation(s)
- P M Matricardi
- Paediatric Pneumology and Immunology, Charitè Medical University, Berlin, Germany
| | - J Kleine-Tebbe
- Allergy & Asthma Center Westend, Outpatient Clinic Ackermann, Hanf, & Kleine-Tebbe, Berlin, Germany
| | - H J Hoffmann
- Department of Respiratory Diseases and Allergy, Institute of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
| | - R Valenta
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - C Hilger
- Department of Infection & Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - S Hofmaier
- Paediatric Pneumology and Immunology, Charitè Medical University, Berlin, Germany
| | - R C Aalberse
- Sanquin Research, Department of Immunopathology, Amsterdam, The Netherlands
- Landsteiner Laboratory, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - I Agache
- Department of Allergy and Clinical Immunology, Faculty of Medicine, Transylvania University of Brasov, Brasov, Romania
| | - R Asero
- Ambulatorio di Allergologia, Clinica San Carlo, Paderno Dugnano, Italy
| | - B Ballmer-Weber
- Allergy Unit, Department of Dermatology, University Hospital Zürich, Zürich, Switzerland
| | - D Barber
- IMMA-School of Medicine, University CEU San Pablo, Madrid, Spain
| | - K Beyer
- Paediatric Pneumology and Immunology, Charitè Medical University, Berlin, Germany
| | - T Biedermann
- Department of Dermatology and Allergology, Technical University Munich, Munich, Germany
| | - M B Bilò
- Allergy Unit, Department of Internal Medicine, University Hospital Ospedali Riuniti di Ancona, Ancona, Italy
| | - S Blank
- Center of Allergy and Environment (ZAUM), Helmholtz Center Munich, Technical University of Munich, Munich, Germany
| | - B Bohle
- Division of Experimental Allergology, Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology & Immunology, Medical University of Vienna, Vienna, Austria
| | - P P Bosshard
- Allergy Unit, Department of Dermatology, University Hospital Zürich, Zürich, Switzerland
| | - H Breiteneder
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - H A Brough
- Paediatric Allergy, Department of Asthma, Allergy and Respiratory Science, King's College London, Guys' Hospital, London, UK
| | - L Caraballo
- Institute for Immunological Research, The University of Cartagena, Cartagena de Indias, Colombia
| | - J C Caubet
- Pediatric Allergy Unit, Department of Child and Adolescent, University Hospitals of Geneva, Geneva, Switzerland
| | - R Crameri
- Swiss Institute of Allergy and Asthma Research, University of Zürich, Davos, Switzerland
| | - J M Davies
- School of Biomedical Sciences, Institute of Biomedical Innovation, Queensland University of Technology, Brisbane, Qld, Australia
| | - N Douladiris
- Allergy Unit, 2nd Paediatric Clinic, National & Kapodistrian University, Athens, Greece
| | - M Ebisawa
- Department of Allergy, Clinical Research Center for Allergology and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | - P A EIgenmann
- Pediatric Allergy Unit, Department of Child and Adolescent, University Hospitals of Geneva, Geneva, Switzerland
| | - M Fernandez-Rivas
- Allergy Department, Hospital Clinico San Carlos IdISSC, Madrid, Spain
| | - 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
| | - M Glatz
- Allergy Unit, Department of Dermatology, University Hospital Zürich, Zürich, Switzerland
- Christine Kühne Center for Allergy Research and Education CK-CARE, Davos, Switzerland
| | - R G Hamilton
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - T Hawranek
- Department of Dermatology, Paracelsus Private Medical University, Salzburg, Austria
| | - P Hellings
- Department of Otorhinolaryngology, Academic Medical Center (AMC), Amsterdam, The Netherlands
- Department of Otorhinolaryngology, University Hospitals Leuven, Leuven, Belgium
| | - K Hoffmann-Sommergruber
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - T Jakob
- Department of Dermatology and Allergology, University Medical Center Giessen and Marburg, Justus Liebig University Giessen, Giessen, Germany
| | - U Jappe
- Division of Clinical and Molecular Allergology, Research Centre Borstel, Airway Research Centre North (ARCN), Member of the German Centre for Lung Research (DZL), Borstel, Germany
- Interdisciplinary Allergy Division, Department of Pneumology, University of Lübeck, Lübeck, Germany
| | - M Jutel
- Department of Clinical Immunology, 'ALL-MED' Medical Research Institute, Wrocław Medical University, Wrocław, Poland
| | - S D Kamath
- Molecular Allergy Research Laboratory, Centre for Biodiscovery and Molecular Development of Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Townsville City, Qld, Australia
| | - E F Knol
- Departments of Immunology and Dermatology/Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - P Korosec
- University Clinic of Respiratory and Allergic Diseases, Golnik, Slovenia
| | - A Kuehn
- Department of Infection & Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - G Lack
- King's College London, MRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, UK
- Division of Asthma, Allergy and Lung Biology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - A L Lopata
- Department of Clinical Immunology, 'ALL-MED' Medical Research Institute, Wrocław Medical University, Wrocław, Poland
| | - M Mäkelä
- Skin and Allergy Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland
| | - M Morisset
- National Service of Immuno-Allergology, Centre Hospitalier Luxembourg (CHL), Luxembourg, UK
| | - V Niederberger
- Department of Otorhinolaryngology, Medical University of Vienna, Vienna, Austria
| | - A H Nowak-Węgrzyn
- Pediatric Allergy and Immunology, Jaffe Food Allergy Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - N G Papadopoulos
- Centre for Paediatrics and Child Health, Institute of Human Development, University of Manchester, Manchester, UK
| | - E A Pastorello
- Unit of Allergology and Immunology, Niguarda Ca' Granda Hospital, Milan, Italy
| | - G Pauli
- Service de Pneumologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - T Platts-Mills
- Department of Microbiology & Immunology, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - D Posa
- Paediatric Pneumology and Immunology, Charitè Medical University, Berlin, Germany
| | - L K Poulsen
- Allergy Clinic, Copenhagen University Hospital, Copenhagen, Denmark
| | - M Raulf
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Ruhr-University Bochum (IPA), Bochum, Germany
| | - J Sastre
- Allergy Division, Fundación Jimenez Díaz, Madrid, Spain
| | - E Scala
- Experimental Allergy Unit, IDI-IRCCS, Rome, Italy
| | - J M Schmid
- Department of Respiratory Diseases and Allergy, Institute of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
| | - P Schmid-Grendelmeier
- Allergy Unit, Department of Dermatology, University Hospital Zürich, Zürich, Switzerland
- Christine Kühne Center for Allergy Research and Education CK-CARE, Davos, Switzerland
| | - M van Hage
- Department of Medicine Solna, Clinical Immunology and Allergy Unit, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - R van Ree
- Departments of Experimental Immunology and of Otorhinolaryngology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - S Vieths
- Department of Allergology, Paul-Ehrlich-Institut, Langen, Germany
| | - R Weber
- School of Medicine, University of Colorado, Denver, CO, USA
- Department of Medicine, National Jewish Health Service, Denver, CO, USA
| | - M Wickman
- Sachs' Children's Hospital, Karolinska Institutet, Stockholm, Sweden
| | - A Muraro
- The Referral Centre for Food Allergy Diagnosis and Treatment Veneto Region, Department of Mother and Child Health, University of Padua, Padua, Italy
| | - M Ollert
- Department of Infection & Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
- Department of Dermatology and Allergy Center, Odense Research Center for Anaphylaxis, University of Southern Denmark, Odense, Denmark
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Breitenbuecher C, Belanger JM, Levy K, Mundell P, Fates V, Gershony L, Famula TR, Oberbauer AM. Protein expression and genetic variability of canine Can f 1 in golden and Labrador retriever service dogs. Canine Genet Epidemiol 2016; 3:3. [PMID: 27110374 PMCID: PMC4840867 DOI: 10.1186/s40575-016-0031-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Accepted: 03/03/2016] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Valued for trainability in diverse tasks, dogs are the primary service animal used to assist individuals with disabilities. Despite their utility, many people in need of service dogs are sensitive to the primary dog allergen, Can f 1, encoded by the Lipocalin 1 gene (LCN1). Several organizations specifically breed service dogs to meet special needs and would like to reduce allergenic potential if possible. In this study, we evaluated the expression of Can f 1 protein and the inherent variability of LCN1 in two breeds used extensively as service dogs. Saliva samples from equal numbers of male and female Labrador retrievers (n = 12), golden retrievers (n = 12), and Labrador-golden crosses (n = 12) were collected 1 h after the morning meal. Can f 1 protein concentrations in the saliva were measured by ELISA, and the LCN1 5' and 3' UTRs and exons sequenced. RESULTS There was no sex effect (p > 0.2) nor time-of-day effect; however, Can f 1 protein levels varied by breed with Labrador retrievers being lower than golden retrievers (3.18 ± 0.51 and 5.35 ± 0.52 μg/ml, respectively, p < 0.0075), and the Labrador-golden crosses having intermediate levels (3.77 ± 0.48 μg/ml). Although several novel SNPs were identified in LCN1, there were no significant breed-specific sequence differences in the gene and no association of LCN1 genotypes with Can f 1 expression. CONCLUSIONS As service dogs, Labrador retrievers likely have lower allergenic potential and, though there were no DNA sequence differences identified, classical genetic selection on the estimated breeding values associated with salivary Can f 1 expression may further reduce that potential.
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Affiliation(s)
| | - Janelle M Belanger
- Department of Animal Science, University of California, One Shields Ave, Davis, CA 95616 USA
| | - Kerinne Levy
- Canine Companions for Independence, Santa Rosa, CA USA
| | - Paul Mundell
- Canine Companions for Independence, Santa Rosa, CA USA
| | - Valerie Fates
- Department of Animal Science, University of California, One Shields Ave, Davis, CA 95616 USA
| | - Liza Gershony
- Department of Animal Science, University of California, One Shields Ave, Davis, CA 95616 USA
| | - Thomas R Famula
- Department of Animal Science, University of California, One Shields Ave, Davis, CA 95616 USA
| | - Anita M Oberbauer
- Department of Animal Science, University of California, One Shields Ave, Davis, CA 95616 USA
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40
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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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41
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Jensen-Jarolim E, Pacios LF, Bianchini R, Hofstetter G, Roth-Walter F. Structural similarities of human and mammalian lipocalins, and their function in innate immunity and allergy. Allergy 2016; 71:286-94. [PMID: 26497994 PMCID: PMC4949658 DOI: 10.1111/all.12797] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/18/2015] [Indexed: 01/08/2023]
Abstract
Owners and their domestic animals via skin shedding and secretions, mutually exchange microbiomes, potential pathogens and innate immune molecules. Among the latter especially lipocalins are multifaceted: they may have an immunomodulatory function and, furthermore, they represent one of the most important animal allergen families. The amino acid identities, as well as their structures by superposition modeling were compared among human lipocalins, hLCN1 and hLCN2, and most important animal lipocalin allergens, such as Can f 1, Can f 2 and Can f 4 from dog, Fel d 4 from cats, Bos d 5 from cow's milk, Equ c 1 from horses, and Mus m 1 from mice, all of them representing major allergens. The β-barrel fold with a central molecular pocket is similar among human and animal lipocalins. Thereby, lipocalins are able to transport a variety of biological ligands in their highly conserved calyx-like cavity, among them siderophores with the strongest known capability to complex iron (Fe(3+) ). Levels of human lipocalins are elevated in nonallergic inflammation and cancer, associated with innate immunoregulatory functions that critically depend on ligand load. Accordingly, deficient loading of lipocalin allergens establishes their capacity to induce Th2 hypersensitivity. Our similarity analysis of human and mammalian lipocalins highlights their function in innate immunity and allergy.
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Affiliation(s)
- E Jensen-Jarolim
- The interuniversity Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna, University Vienna, Vienna, Austria
- Institute of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University Vienna, Vienna, Austria
| | - L F Pacios
- Biotechnology Department, Center for Plant Biotechnology and Genomics, ETSI Montes, Technical University of Madrid, Madrid, Spain
- Department of Natural Systems and Resources, ETSI Montes, Technical University of Madrid, Madrid, Spain
| | - R Bianchini
- The interuniversity Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna, University Vienna, Vienna, Austria
| | - G Hofstetter
- The interuniversity Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna, University Vienna, Vienna, Austria
| | - F Roth-Walter
- The interuniversity Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna, University Vienna, Vienna, Austria
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Abstract
Laboratory animal workers face a high risk of developing laboratory animal allergy as a consequence of inhaling animal proteins at work; this has serious consequences for their health and future employment. Exposure to animal allergen remains to be the greatest risk factor although the relationship is complex, with attenuation at high allergen exposure. Recent evidence suggests that this may be due to a form of natural immunotolerance. Furthermore, the pattern of exposure to allergen may also be important in determining whether an allergic or a tolerant immune response is initiated. Risk associated with specific tasks in the laboratory need to be determined to provide evidence to devise a code of best practice for working within modern laboratory animal facilities. Recent evidence suggests that members of lipocalin allergens, such as Mus m 1, may act as immunomodulatory proteins, triggering innate immune receptors through toll-like receptors and promoting airway laboratory animal allergy. This highlights the need to understand the relationship between endotoxin, animal allergen and development of laboratory animal allergy to provide a safe working environment for all laboratory animal workers.
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43
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Breiteneder H. Grundlagen natürlicher Allergene. ALLERGOLOGIE 2016. [DOI: 10.1007/978-3-642-37203-2_17] [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
Lipocalins are one of the most important groups of inhalant animal allergens. The analysis of structural features of these proteins is important to get insights into their allergenicity. We have determined two different dimeric crystal structures for bovine dander lipocalin Bos d 2, which was earlier described as a monomeric allergen. The crystal structure analysis of all other determined lipocalin allergens also revealed oligomeric structures which broadly utilize inherent structural features of the β-sheet in dimer formation. According to the moderate size of monomer-monomer interfaces, most of these dimers would be transient in solution. Native mass spectrometry was employed to characterize quantitatively transient dimerization of two lipocalin allergens, Bos d 2 and Bos d 5, in solution.
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Konradsen JR, van Hage M, Hedlin G, Hilger C, Rönmark E, Platts-Mills T. Reply: To PMID 25282018. J Allergy Clin Immunol 2015; 135:1666-7. [PMID: 26051956 DOI: 10.1016/j.jaci.2015.03.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 03/12/2015] [Indexed: 01/17/2023]
Affiliation(s)
- Jon R Konradsen
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden; Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden; Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden.
| | - Marianne van Hage
- Clinical Immunology and Allergy Unit, Department of Medicine, Karolinska Institutet and University Hospital, Stockholm, Sweden
| | - Gunilla Hedlin
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden; Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden; Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Christiane Hilger
- Department of Infection & Immunity, Luxembourg Institute of Health, Strassen, Luxembourg
| | - Eva Rönmark
- Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, Umeå University, Umeå, Sweden
| | - Tom Platts-Mills
- Asthma and Allergic Diseases Center, University of Virginia, Charlottesville, Va
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Posch B, Irsara C, Gamper FS, Herrmann M, Bindreither D, Fuchs D, Reider N, Redl B, Heufler C. Allergenic Can f 1 and its human homologue Lcn-1 direct dendritic cells to induce divergent immune responses. J Cell Mol Med 2015. [PMID: 26218644 PMCID: PMC4594679 DOI: 10.1111/jcmm.12616] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Why and when the immune system skews to Th2 mediated allergic immune responses is still poorly characterized. With two homologous lipocalins, the major respiratory dog allergen Can f 1 and the human endogenous, non-allergenic Lipocalin-1, we investigated their impact on human monocyte-derived dendritic cells (DC). The two lipocalins had differential effects on DC according to their allergenic potential. Compared to Lipocalin-1, Can f 1 persistently induced lower levels of the Th1 skewing maturation marker expression, tryptophan breakdown and interleukin (IL)-12 production in DC. As a consequence, T cells stimulated by DC treated with Can f 1 produced more of the Th2 signature cytokine IL-13 and lower levels of the Th1 signature cytokine interferon-γ than T cells stimulated by Lipocalin-1 treated DC. These data were partially verified by a second pair of homologous lipocalins, the cat allergen Fel d 4 and its putative human homologue major urinary protein. Our data indicate that the crosstalk of DC with lipocalins alone has the potential to direct the type of immune response to these particular antigens. A global gene expression analysis further supported these results and indicated significant differences in intracellular trafficking, sorting and antigen presentation pathways when comparing Can f 1 and Lipocalin-1 stimulated DC. With this study we contribute to a better understanding of the induction phase of a Th2 immune response.
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Affiliation(s)
- Beate Posch
- Department of Dermatology, Medical University Innsbruck, Innsbruck, Austria
| | - Christian Irsara
- Department of Dermatology, Medical University Innsbruck, Innsbruck, Austria
| | - Fabian S Gamper
- Department of Dermatology, Medical University Innsbruck, Innsbruck, Austria
| | - Martin Herrmann
- Department of Anaesthesiology and Critical Care Medicine, Medical University of Innsbruck, Innsbruck, Austria
| | - Daniel Bindreither
- Division of Molecular Pathophysiology, Biocenter, Medical University Innsbruck, Innsbruck, Austria
| | - Dietmar Fuchs
- Division of Medical Biochemistry, Biocenter, Medical University Innsbruck, Innsbruck, Austria
| | - Norbert Reider
- Department of Dermatology, Medical University Innsbruck, Innsbruck, Austria
| | - Bernhard Redl
- Division of Molecular Biology, Biocenter, Medical University Innsbruck, Innsbruck, Austria
| | - Christine Heufler
- Department of Dermatology, Medical University Innsbruck, Innsbruck, Austria
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Hilger C, Dubey VP, Lentz D, Davril C, Revets D, Muller CP, Diederich C, De La Barrière H, Codreanu-Morel F, Morisset M, Lehners C, De PK, Hentges F. Male-specific submaxillary gland protein, a lipocalin allergen of the golden hamster, differs from the lipocalin allergens of Siberian and Roborovski dwarf hamsters. Int Arch Allergy Immunol 2015; 166:30-40. [PMID: 25765367 DOI: 10.1159/000371420] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 12/05/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND An increasing number of asthma cases upon exposure to hamsters and anaphylactic reactions following hamster bites are being reported, but the allergens responsible are still poorly characterized. In the Golden hamster, male-specific submaxillary gland protein (MSP), a lipocalin expressed in a sex- and tissue-specific manner in the submaxillary and lacrimal glands, is secreted in the saliva, tears and urine. The purpose of this study was to determine if MSP is an allergen, to identify IgE-reactive proteins of different hamster species and to analyse potential cross-reactivities. METHODS Fur extracts were prepared from four hamster species. Hamster-allergic patients were selected based on a history of positive IgE-test to hamster epithelium. The IgE-reactivity of patients' sera was investigated by means of immunoblot and ELISA. IgE-reactive proteins in fur extracts and the submaxillary gland were identified using anti-MSP antibodies, Edman sequencing or mass spectrometry. MSP was purified from Golden hamster and recombinant MSP was expressed in E. coli. RESULTS Four patients had IgE-antibodies against 20.5-kDa and 24-kDa proteins of Golden hamster fur extract, which were identified as MSP. IgE-reactive MSP-like proteins were detected in European hamster fur extract. Three patient sera showed IgE-reactive bands at 17-21 kDa in Siberian and Roborovski hamster fur extracts. These proteins were identified as two closely related lipocalins. Immunoblot inhibition experiments showed that they are cross-reactive and are different from MSP. CONCLUSION MSP lipocalin of the Golden hamster was identified as an allergen, and it is different from the cross-reactive lipocalin allergens of Siberian and Roborovski hamsters. Our findings highlight the need for specific tools for the in vitro and in vivo diagnosis of allergy to different hamster species.
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Affiliation(s)
- Christiane Hilger
- Departments of Infection and Immunity, Luxembourg Institute of Health, Luxembourg, Luxembourg
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Mastrogiacomo R, D′Ambrosio C, Niccolini A, Serra A, Gazzano A, Scaloni A, Pelosi P. An odorant-binding protein is abundantly expressed in the nose and in the seminal fluid of the rabbit. PLoS One 2014; 9:e111932. [PMID: 25391153 PMCID: PMC4229146 DOI: 10.1371/journal.pone.0111932] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 10/02/2014] [Indexed: 11/19/2022] Open
Abstract
We have purified an abundant lipocalin from the seminal fluid of the rabbit, which shows significant similarity with the sub-class of pheromone carriers “urinary” and “salivary” and presents an N-terminal sequence identical with that of an odorant-binding protein (rabOBP3) expressed in the nasal tissue of the same species. This protein is synthesised in the prostate and found in the seminal fluid, but not in sperm cells. The same protein is also expressed in the nasal epithelium of both sexes, but is completely absent in female reproductive organs. It presents four cysteines, among which two are arranged to form a disulphide bridge, and is glycosylated. This is the first report of an OBP identified at the protein level in the seminal fluid of a vertebrate species. The protein purified from seminal fluid is bound to some organic chemicals whose structure is currently under investigation. We reasonably speculate that, like urinary and salivary proteins reported in other species of mammals, this lipocalin performs a dual role, as carrier of semiochemicals in the seminal fluid and as detector of chemical signals in the nose.
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Affiliation(s)
- Rosa Mastrogiacomo
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Chiara D′Ambrosio
- Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, Napoli, Italy
| | | | - Andrea Serra
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Angelo Gazzano
- Department of Veterinary Sciences, University of Pisa, Pisa, Italy
| | - Andrea Scaloni
- Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, Napoli, Italy
- * E-mail: (A. Scaloni); (PP)
| | - Paolo Pelosi
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
- * E-mail: (A. Scaloni); (PP)
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Konradsen JR, Fujisawa T, van Hage M, Hedlin G, Hilger C, Kleine-Tebbe J, Matsui EC, Roberts G, Rönmark E, Platts-Mills TAE. Allergy to furry animals: New insights, diagnostic approaches, and challenges. J Allergy Clin Immunol 2014; 135:616-25. [PMID: 25282018 DOI: 10.1016/j.jaci.2014.08.026] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 07/08/2014] [Accepted: 08/05/2014] [Indexed: 12/16/2022]
Abstract
The prevalence of allergy to furry animals has been increasing, and allergy to cats, dogs, or both is considered a major risk factor for the development of asthma and rhinitis. An important step forward in the diagnosis of allergy to furry animals has been made with the introduction of molecular-based allergy diagnostics. A workshop on furry animals was convened to provide an up-to-date assessment of our understanding of (1) the exposure and immune response to the major mammalian allergens, (2) the relationship of these responses (particularly those to specific proteins or components) to symptoms, and (3) the relevance of these specific antibody responses to current or future investigation of patients presenting with allergic diseases. In this review research results discussed at the workshop are presented, including the effect of concomitant exposures from other allergens or microorganisms, the significance of the community prevalence of furry animals, molecular-based allergy diagnostics, and a detailed discussion of cat and dog components.
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Affiliation(s)
- Jon R Konradsen
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden; Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden; Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden.
| | - Takao Fujisawa
- Institute for Clinical Research, Mie National Hospital, Mie, Japan
| | - Marianne van Hage
- Clinical Immunology and Allergy Unit, Department of Medicine, Karolinska Institutet and University Hospital, Stockholm, Sweden
| | - Gunilla Hedlin
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden; Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden; Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Christiane Hilger
- Laboratory of Immunogenetics and Allergology, CRP-Santé, Luxembourg, Luxembourg
| | - Jörg Kleine-Tebbe
- Allergy & Asthma Center Westend, Outpatient Clinic and Research Unit, Berlin, Germany
| | - Elizabeth C Matsui
- Division of Pediatric Allergy/Immunology, Johns Hopkins School of Medicine, Baltimore, Md
| | - Graham Roberts
- David Hide Asthma and Allergy Research Centre, St Mary's Hospital, Isle of Wight, United Kingdom; Human Development and Health and Clinical and Experimental Sciences Academic Units, University of Southampton Faculty of Medicine, Southampton, United Kingdom; NIHR Respiratory Biomedical Research Unit, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Eva Rönmark
- Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, Umeå University, Umeå, Sweden
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Liukko ALK, Kinnunen TT, Rytkönen-Nissinen MA, Kailaanmäki AHT, Randell JT, Maillère B, Virtanen TI. Human CD4+ T cell responses to the dog major allergen Can f 1 and its human homologue tear lipocalin resemble each other. PLoS One 2014; 9:e98461. [PMID: 24875388 PMCID: PMC4038554 DOI: 10.1371/journal.pone.0098461] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 05/03/2014] [Indexed: 01/21/2023] Open
Abstract
Lipocalin allergens form a notable group of proteins, as they contain most of the significant respiratory allergens from mammals. The basis for the allergenic capacity of allergens in the lipocalin family, that is, the development of T-helper type 2 immunity against them, is still unresolved. As immunogenicity has been proposed to be a decisive feature of allergens, the purpose of this work was to examine human CD4+ T cell responses to the major dog allergen Can f 1 and to compare them with those to its human homologue, tear lipocalin (TL). For this, specific T cell lines were induced in vitro from the peripheral blood mononuclear cells of Can f 1-allergic and healthy dog dust-exposed subjects with peptides containing the immunodominant T cell epitopes of Can f 1 and the corresponding TL peptides. We found that the frequency of Can f 1 and TL-specific T cells in both subject groups was low and close to each other, the difference being about two-fold. Importantly, we found that the proliferative responses of both Can f 1 and TL-specific T cell lines from allergic subjects were stronger than those from healthy subjects, but that the strength of the responses within the subject groups did not differ between these two antigens. Moreover, the phenotype of the Can f 1 and TL-specific T cell lines, determined by cytokine production and expression of cell surface markers, resembled each other. The HLA system appeared to have a minimal role in explaining the allergenicity of Can f 1, as the allergic and healthy subjects' HLA background did not differ, and HLA binding was very similar between Can f 1 and TL peptides. Along with existing data on lipocalin allergens, we conclude that strong antigenicity is not decisive for the allergenicity of Can f 1.
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Affiliation(s)
- Aino L. K. Liukko
- Department of Clinical Microbiology, Institute of Clinical Medicine and Biocenter Kuopio, University of Eastern Finland, Kuopio, Finland
| | - Tuure T. Kinnunen
- Department of Clinical Microbiology, Institute of Clinical Medicine and Biocenter Kuopio, University of Eastern Finland, Kuopio, Finland
| | - Marja A. Rytkönen-Nissinen
- Department of Clinical Microbiology, Institute of Clinical Medicine and Biocenter Kuopio, University of Eastern Finland, Kuopio, Finland
- Institute of Dentistry, School of Medicine, University of Eastern Finland, Kuopio, Finland
| | - Anssi H. T. Kailaanmäki
- Department of Clinical Microbiology, Institute of Clinical Medicine and Biocenter Kuopio, University of Eastern Finland, Kuopio, Finland
| | - Jukka T. Randell
- Department of Pulmonary Diseases, Kuopio University Hospital, Kuopio, Finland
| | - Bernard Maillère
- Commissariat à l'Energie Atomique, Institut de Biologie et de Technologies, Service d'Ingénierie Moléculaire des Protéines, Gif Sur Yvette, France
| | - Tuomas I. Virtanen
- Department of Clinical Microbiology, Institute of Clinical Medicine and Biocenter Kuopio, University of Eastern Finland, Kuopio, Finland
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