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Krutz NL, Kimber I, Winget J, Nguyen MN, Limviphuvadh V, Maurer-Stroh S, Mahony C, Gerberick GF. Identification and semi-quantification of protein allergens in complex mixtures using proteomic and AllerCatPro 2.0 bioinformatic analyses: a proof-of-concept investigation. J Immunotoxicol 2024; 21:2305452. [PMID: 38291955 DOI: 10.1080/1547691x.2024.2305452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 01/09/2024] [Indexed: 02/01/2024] Open
Abstract
The demand for botanicals and natural substances in consumer products has increased in recent years. These substances usually contain proteins and these, in turn, can pose a risk for immunoglobulin E (IgE)-mediated sensitization and allergy. However, no method has yet been accepted or validated for assessment of potential allergenic hazards in such materials. In the studies here, a dual proteomic-bioinformatic approach is proposed to evaluate holistically allergenic hazards in complex mixtures of plants, insects, or animal proteins. Twelve commercial preparations of source materials (plant products, dust mite extract, and preparations of animal dander) known to contain allergenic proteins were analyzed by label-free proteomic analyses to identify and semi-quantify proteins. These were then evaluated by bioinformatics using AllerCatPro 2.0 (https://allercatpro.bii.a-star.edu.sg/) to predict no, weak, or strong evidence for allergenicity and similarity to source-specific allergens. In total, 4,586 protein sequences were identified in the 12 source materials combined. Of these, 1,665 sequences were predicted with weak or strong evidence for allergenic potential. This first-tier approach provided top-level information about the occurrence and abundance of proteins and potential allergens. With regards to source-specific allergens, 129 allergens were identified. The sum of the relative abundance of these allergens ranged from 0.8% (lamb's quarters) to 63% (olive pollen). It is proposed here that this dual proteomic-bioinformatic approach has the potential to provide detailed information on the presence and relative abundance of allergens, and can play an important role in identifying potential allergenic hazards in complex protein mixtures for the purposes of safety assessments.
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Affiliation(s)
- Nora L Krutz
- NV Procter & Gamble Services Company SA, Global Product Stewardship, Strombeek-Bever, Belgium
| | - Ian Kimber
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | | | - Minh N Nguyen
- Agency for Science, Technology and Research (A*STAR), Bioinformatics Institute, Singapore, Singapore
| | - Vachiranee Limviphuvadh
- Agency for Science, Technology and Research (A*STAR), Bioinformatics Institute, Singapore, Singapore
| | - Sebastian Maurer-Stroh
- Agency for Science, Technology and Research (A*STAR), Bioinformatics Institute, Singapore, Singapore
- Yong Loo Lin School of Medicine and Department of Biological Sciences, National University of Singapore (NUS), Singapore, Singapore
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Gelsomino M, Liotti L, Barni S, Mori F, Giovannini M, Mastrorilli C, Pecoraro L, Saretta F, Castagnoli R, Arasi S, Klain A, del Giudice MM, Novembre E. Elimination Diets in Lactating Mothers of Infants with Food Allergy. Nutrients 2024; 16:2317. [PMID: 39064760 PMCID: PMC11279873 DOI: 10.3390/nu16142317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2024] [Revised: 07/10/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
Breastfeeding is the most important nutrition source for infants. However, managing breastfed infants with signs and symptoms related to food allergy can be difficult. Many studies have shown the presence of different food allergens in breast milk, but the clinical role of these antigens in human milk is still much debated. Milk is the main suspect in exclusively breastfed infants with signs and symptoms attributable to food allergy, even if other foods may be responsible. This narrative review analyzes the recommendations provided by international guidelines to determine the diagnosis and management of IgE-mediated and non-IgE-mediated food allergies in exclusively breastfed infants. Dietary restrictions in lactating mothers of infants with suspected FA are usually not necessary. Only in the very few cases where significant allergy signs and symptoms occur in the infant during exclusive breastfeeding should the lactating mother follow an elimination diet for the suspected food for a short period.
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Affiliation(s)
- Mariannita Gelsomino
- Pediatric Allergy Unit, Department of Life Sciences and Public Health, University Foundation Policlinico Gemelli IRCCS, Catholic University of the Sacred Heart, 00168 Rome, Italy
| | - Lucia Liotti
- Pediatric Unit, Department of Mother and Child Health, Salesi Children’s Hospital, 60123 Ancona, Italy;
| | - Simona Barni
- Allergy Unit, Meyer Children’s Hospital IRCCS, 50139 Florence, Italy; (S.B.); (F.M.); (M.G.)
| | - Francesca Mori
- Allergy Unit, Meyer Children’s Hospital IRCCS, 50139 Florence, Italy; (S.B.); (F.M.); (M.G.)
| | - Mattia Giovannini
- Allergy Unit, Meyer Children’s Hospital IRCCS, 50139 Florence, Italy; (S.B.); (F.M.); (M.G.)
- Department of Health Sciences, University of Florence, 50139 Florence, Italy;
| | - Carla Mastrorilli
- Pediatric Hospital Giovanni XXIII, Pediatric and Emergency Department, AOU Policlinic of Bari, 70126 Bari, Italy;
| | - Luca Pecoraro
- Pediatric Unit, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, 37126 Verona, Italy;
| | - Francesca Saretta
- Pediatric Department, Latisana-Palmanova Hospital, Azienda Sanitaria Universitaria Friuli Centrale, 33100 Udine, Italy;
| | - Riccardo Castagnoli
- Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy;
- Pediatric Clinic, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Stefania Arasi
- Translational Research in Pediatric Specialties Area, Division of Allergy, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy;
| | - Angela Klain
- Department of Woman, Child and General and Specialized Surgery, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (A.K.); (M.M.d.G.)
| | - Michele Miraglia del Giudice
- Department of Woman, Child and General and Specialized Surgery, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (A.K.); (M.M.d.G.)
| | - Elio Novembre
- Department of Health Sciences, University of Florence, 50139 Florence, Italy;
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3
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Yan Y, Li L, Long C, Dong Y, Li J, Shen C, Zhao Y, Zhao J, Wang J, Xiong A, Li X, Chen H, He S. A novel IgE epitope-specific antibodies-based sandwich ELISA for sensitive measurement of immunoreactivity changes of peanut allergen Ara h 2 in processed foods. Front Nutr 2024; 11:1323553. [PMID: 38439921 PMCID: PMC10910080 DOI: 10.3389/fnut.2024.1323553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/05/2024] [Indexed: 03/06/2024] Open
Abstract
Background Peanut is an important source of dietary protein for human beings, but it is also recognized as one of the eight major food allergens. Binding of IgE antibodies to specific epitopes in peanut allergens plays important roles in initiating peanut-allergic reactions, and Ara h 2 is widely considered as the most potent peanut allergen and the best predictor of peanut allergy. Therefore, Ara h 2 IgE epitopes can serve as useful biomarkers for prediction of IgE-binding variations of Ara h 2 and peanut in foods. This study aimed to develop and validate an IgE epitope-specific antibodies (IgE-EsAbs)-based sandwich ELISA (sELISA) for detection of Ara h 2 and measurement of Ara h 2 IgE-immunoreactivity changes in foods. Methods DEAE-Sepharose Fast Flow anion-exchange chromatography combining with SDS-PAGE gel extraction were applied to purify Ara h 2 from raw peanut. Hybridoma and epitope vaccine techniques were employed to generate a monoclonal antibody against a major IgE epitope of Ara h 2 and a polyclonal antibody against 12 IgE epitopes of Ara h 2, respectively. ELISA was carried out to evaluate the target binding and specificity of the generated IgE-EsAbs. Subsequently, IgE-EsAbs-based sELISA was developed to detect Ara h 2 and its allergenic residues in food samples. The IgE-binding capacity of Ara h 2 and peanut in foods was determined by competitive ELISA. The dose-effect relationship between the Ara h 2 IgE epitope content and Ara h 2 (or peanut) IgE-binding ability was further established to validate the reliability of the developed sELISA in measuring IgE-binding variations of Ara h 2 and peanut in foods. Results The obtained Ara h 2 had a purity of 94.44%. Antibody characterization revealed that the IgE-EsAbs recognized the target IgE epitope(s) of Ara h 2 and exhibited high specificity. Accordingly, an IgE-EsAbs-based sELISA using these antibodies was able to detect Ara h 2 and its allergenic residues in food samples, with high sensitivity (a limit of detection of 0.98 ng/mL), accuracy (a mean bias of 0.88%), precision (relative standard deviation < 16.50%), specificity, and recovery (an average recovery of 98.28%). Moreover, the developed sELISA could predict IgE-binding variations of Ara h 2 and peanut in foods, as verified by using sera IgE derived from peanut-allergic individuals. Conclusion This novel immunoassay could be a user-friendly method to monitor low level of Ara h 2 and to preliminary predict in vitro potential allergenicity of Ara h 2 and peanut in processed foods.
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Affiliation(s)
- Yan Yan
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Liming Li
- Department of Dermatology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Caiyun Long
- Department of Laboratory, Ganzhou Center for Disease Control and Prevention, Ganzhou, China
| | - Yaping Dong
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Jinyu Li
- Department of Dermatology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Caiyi Shen
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Yiqian Zhao
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Jiangqiang Zhao
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Jianbin Wang
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Anqi Xiong
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
| | - Xin Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, China
| | - Hongbing Chen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, China
| | - Shengfa He
- School of Public Health and Health Management, Gannan Medical University, Ganzhou, China
- Key Laboratory of Environment and Health of Ganzhou, Gannan Medical University, Ganzhou, China
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Sena-Torralba A, Gabaldón-Atienza J, Cubells-Gómez A, Casino P, Maquieira Á, Morais S. Lateral Flow Microimmunoassay (LFµIA) for the Reliable Quantification of Allergen Traces in Food Consumables. BIOSENSORS 2022; 12:bios12110980. [PMID: 36354489 PMCID: PMC9688043 DOI: 10.3390/bios12110980] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/02/2022] [Accepted: 11/03/2022] [Indexed: 05/24/2023]
Abstract
Quality assurance and food safety are of great concern within the food industry because of unknown quantities of allergens often present in food. Therefore, there is an ongoing need to develop rapid, sensitive, and easy to use methods that serve as an alternative to mass spectrometry and enzyme-linked immunosorbent assay (ELISA) for monitoring food safety. Lateral flow immunoassay is one of the most used point-of-need devices for clinical, environmental, and food safety applications. Compared to traditional methods, it appears to be a simple and fast alternative for detecting food allergens. However, its reliability is frequently questioned due to the lack of quantitative information. In this study, a lateral flow microimmunoassay (LFµIA) is presented that integrates up to 36 spots in microarray format in a single strip, providing semi-quantitative information about the level of allergens, positive and negative controls, internal calibration, and hook effect. The LFµIA has been evaluated for the on-site simultaneous and reliable quantification of almond and peanut allergens as a proof of concept, demonstrating high sensitivity (185 and 229 µg/kg, respectively), selectivity (77%), and accuracy (RSD 5-25%) when analyzing commercial allergen-suspicious food consumables.
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Affiliation(s)
- Amadeo Sena-Torralba
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Javier Gabaldón-Atienza
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Aitor Cubells-Gómez
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Patricia Casino
- Departamento de Bioquímica y Biología Molecular, Universitat de València, Dr Moliner 50, 46100 Burjassot, Spain
- Instituto Universitario de Biotecnología i Biomedicina (BIOTECMED), Universitat de València, Dr Moliner 50, 46100 Burjassot, Spain
- Group 739 of the Centro de Investigación Biomédica en Red sobre Enfermedades Raras (CIBERER) del Instituto de Salud Carlos III, 28220 Madrid, Spain
| | - Ángel Maquieira
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain
- Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Sergi Morais
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain
- Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
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Relevance of Early Introduction of Cow’s Milk Proteins for Prevention of Cow’s Milk Allergy. Nutrients 2022; 14:nu14132659. [PMID: 35807839 PMCID: PMC9268691 DOI: 10.3390/nu14132659] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/22/2022] [Accepted: 06/24/2022] [Indexed: 02/06/2023] Open
Abstract
Food allergy incidence has increased worldwide over the last 20 years. For prevention of food allergy, current guidelines do not recommend delaying the introduction of allergenic foods. Several groundbreaking studies, such as the Learning Early About Peanut Allergy study, showed that the relatively early introduction of this allergenic food between 4–6 months of age reduces the risk of peanut allergy. However, less is known about the introduction of cow’s milk, as many children already receive cow’s-milk-based formula much earlier in life. This can be regular cow’s milk formula with intact milk proteins or hydrolyzed formulas. Several recent studies have investigated the effects of early introduction of cow’s-milk-based formulas with intact milk proteins on the development of cow’s milk allergy while breastfeeding. These studies suggest that depending on the time of introduction and the duration of administration of cow’s milk, the risk of cow’s milk allergy can be reduced (early introduction) or increased (very early introduction followed by discontinuation). The aim of this narrative review is to summarize these studies and to discuss the impact of early introduction of intact cow’s milk protein—as well as hydrolyzed milk protein formulas—and the development of tolerance versus allergy towards cow’s milk proteins.
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6
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Schocker F, Jappe U. Breastfeeding: Maternally Transferred Allergens in Breast Milk: Protective or Sensitizing? Mol Nutr Food Res 2022; 66:e2200066. [PMID: 35619210 DOI: 10.1002/mnfr.202200066] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 05/01/2022] [Indexed: 11/11/2022]
Abstract
According to a thorough literature search, the following allergen sources have been associated with allergy symptoms in the exclusively breastfed child: hen's egg, cow's milk, peanut, trout. Subsequently, several studies use the advantage of molecular allergology and investigate the potential transfer of single allergens into breastmilk. This is shown for caseins, whey proteins, gliadin, ovalbumin, ovomucoid, the peanut allergens Ara h 2 and Ara h 6, as well as the inhalant allergens Der p 1 and Blo t 5. It is still a matter of debate whether or not food allergens transferred via breastfeeding to the baby promote allergic sensitization or induce tolerance and via which mechanisms they may shift the immune response to the one or other side. Noteworthy, some breastfed children are described to be sensitized to foods before being exposed to solid foods, and this exposure may have occurred through breastmilk. In the light of these findings the investigation of food allergens transferred from the mother's diet into breastmilk and their impact on sensitization or allergy prevention remains a current topic in research. This review describes breastmilk in its composition and provides data on the identification of food allergens therein including human and mouse studies.
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Affiliation(s)
- Frauke Schocker
- Division of Clinical and Molecular Allergology, Priority Research Area Asthma and Allergy, Research Center Borstel, Leibniz Lung Center, Borstel, Germany.,Airway Research Center North (ARCN), Member of the German Center for Lung Research, Germany
| | - Uta Jappe
- Division of Clinical and Molecular Allergology, Priority Research Area Asthma and Allergy, Research Center Borstel, Leibniz Lung Center, Borstel, Germany.,Airway Research Center North (ARCN), Member of the German Center for Lung Research, Germany.,Interdisciplinary Allergy Outpatient Clinic, Department of Pneumology, University of Lübeck, Lübeck, Germany
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7
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Gamirova A, Berbenyuk A, Levina D, Peshko D, Simpson MR, Azad MB, Järvinen KM, Brough HA, Genuneit J, Greenhawt M, Verhasselt V, Peroni DG, Perkin MR, Warner JO, Palmer DJ, Boyle RJ, Munblit D. Food Proteins in Human Breast Milk and Probability of IgE-Mediated Allergic Reaction in Children During Breastfeeding: A Systematic Review. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2022; 10:1312-1324.e8. [PMID: 35123103 DOI: 10.1016/j.jaip.2022.01.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 01/13/2022] [Accepted: 01/13/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Previous reports suggested that food proteins present in human milk (HM) may trigger symptoms in allergic children during breastfeeding, but existing evidence has never been reviewed systematically. OBJECTIVE To assess the probability of food proteins in HM to trigger allergic reactions in infants with IgE-mediated food allergy. METHODS Electronic bibliographic databases (MEDLINE, EMBASE) were systematically searched from inception to November 3, 2021. The data regarding the levels of food proteins detected in HM were extracted and compared with data from the Voluntary Incidental Trace Allergen Labelling (VITAL 3.0) guide to assess the probability of food-allergic individuals to experience immediate type allergic reactions on ingesting HM. RESULTS A total of 32 studies were identified. Fourteen studies assessed excretion of cow's milk proteins into HM, 9 egg, 4 peanut, and 2 wheat; 3 measured levels of cow's milk and egg proteins simultaneously. We found that levels of all food proteins across the studies were much lower than the eliciting dose for 1% of allergic individuals (ED01) in most of the samples. The probability of an IgE-mediated allergic reaction in a food-allergic infant breastfed by a woman consuming the relevant food can be estimated as ≤1:1000 for cow's milk, egg, peanut, and wheat. CONCLUSIONS To our knowledge, this is the first systematic review that assesses and summarizes evidence on food proteins in HM and potential for IgE-mediated allergic reactions. Our data suggest that the probability of IgE-mediated allergic reactions to food proteins in HM is low.
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Affiliation(s)
- Aysylu Gamirova
- Department of Paediatrics and Paediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Anna Berbenyuk
- Department of Paediatrics and Paediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Daria Levina
- Department of Paediatrics and Paediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Dmitrii Peshko
- Department of Paediatrics and Paediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Melanie R Simpson
- Department of Public Health and Nursing, Norwegian University of Science and Technology, Trondheim, Norway; Clinic of Laboratory Medicine, St Olavs Hospital, Trondheim, Norway
| | - Meghan B Azad
- Manitoba Interdisciplinary Lactation Centre (MILC), Children's Hospital Research Institute of Manitoba, Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, MB, Canada
| | - Kirsi M Järvinen
- Division of Pediatric Allergy and Immunology & Center for Food Allergy, University of Rochester School of Medicine and Dentistry, Rochester, NY
| | - Helen A Brough
- Children's Allergy Service, Evelina Children's Hospital, Guy's and St. Thomas' Hospital, London, United Kingdom; Paediatric Allergy Group, Department of Women and Children's Health, School of Life Course Sciences, King's College London, London, United Kingdom
| | - Jon Genuneit
- Pediatric Epidemiology, Department of Pediatrics, Medical Faculty, Leipzig University, Leipzig, Germany
| | - Matthew Greenhawt
- Department of Pediatrics, Section of Allergy/Immunology, Food Challenge and Research Unit, Children's Hospital Colorado, University of Colorado School of Medicine, Aurora, Colo
| | - Valerie Verhasselt
- School of Molecular Sciences, University of Western Australia, Perth, WA, Australia
| | - Diego G Peroni
- Department of Clinical and Experimental Medicine, Section of Paediatrics, University of Pisa, Pisa, Italy
| | - Michael R Perkin
- The Population Health Research Institute, St George's, University of London, London, United Kingdom
| | - John O Warner
- National Institute for Health Research, Collaboration for Leadership in Applied Health Research and Care for NW London, London, United Kingdom; Department of Paediatrics, Imperial College London, London, United Kingdom
| | - Debra J Palmer
- School of Medicine, University of Western Australia, Crawley, WA, Australia; Telethon Kids Institute, University of Western Australia, Nedlands, WA, Australia
| | - Robert J Boyle
- Inflammation, Repair and Development Section, National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Daniel Munblit
- Department of Paediatrics and Paediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
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Hazebrouck S, Canon N, Dreskin SC. The Effector Function of Allergens. FRONTIERS IN ALLERGY 2022; 3:818732. [PMID: 35386644 PMCID: PMC8974742 DOI: 10.3389/falgy.2022.818732] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 01/14/2022] [Indexed: 01/29/2023] Open
Abstract
Allergens are antigens that generate an IgE response (sensitization) in susceptible individuals. The allergenicity of an allergen can be thought of in terms of its ability to sensitize as well as its ability to cross-link IgE/IgE receptor complexes on mast cells and basophils leading to release of preformed and newly formed mediators (effector activity). The identity of the allergens responsible for sensitization may be different from those that elicit an allergic response. Effector activity is determined by (1) the amount of specific IgE (sIgE) and in some circumstances the ratio of sIgE to total IgE, (2) the number of high affinity receptors for IgE (FcεR1) on the cell surface, (3) the affinity of binding of sIgE for its epitope and, in a polyclonal response, the collective avidity, (4) the number and spatial relationships of IgE binding epitopes on the allergen and (5) the presence of IgG that can bind to allergen and either block binding of sIgE and/or activate low affinity IgG receptors that activate intracellular inhibitory pathways. This review will discuss these important immunologic and physical properties that contribute to the effector activity of allergens.
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Affiliation(s)
- Stéphane Hazebrouck
- Université Paris Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SPI, Gif-sur-Yvette, France
| | - Nicole Canon
- Division of Allergy and Clinical Immunology, Department of Medicine, University of Colorado Denver, Aurora, CO, United States
| | - Stephen C. Dreskin
- Division of Allergy and Clinical Immunology, Department of Medicine, University of Colorado Denver, Aurora, CO, United States
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9
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Kosmeri C, Rallis D, Kostara M, Siomou E, Tsabouri S. Characteristics of Exogenous Allergen in Breast Milk and Their Impact on Oral Tolerance Induction. Front Pediatr 2022; 10:830718. [PMID: 35311039 PMCID: PMC8931296 DOI: 10.3389/fped.2022.830718] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 01/11/2022] [Indexed: 11/13/2022] Open
Abstract
Food allergy is a common health problem in childhood since its prevalence was estimated to range from 6. 5 to 24.6% in European countries. Recently, a lot of research has focused on the impact of breastfeeding on oral tolerance induction. Since it was found that breast milk contains immunologically active food antigens, it would be very helpful to clarify the factors of antigen shedding that promotes oral tolerance. This narrative review aimed to summarize the latest evidence from experimental and human studies regarding allergen characteristics in human milk that may influence oral tolerance induction. A literature search in PubMed, MEDLINE, and Google Scholar was conducted. The diet of the mother was found to have a direct impact on allergen amount in the breastmilk, while antigens had different kinetics in human milk between women and depending on the antigen. The mode of antigen consumption, such as the cooking of an antigen, may also affect the allergenicity of the antigen in human milk. The dose of the antigen in human milk is in the range of nanograms per milliliter; however, it was found to have a tolerogenic effect. Furthermore, the presence of antigen-specific immunoglobulins, forming immune complexes with antigens, was found more tolerogenic compared to free allergens in experimental studies, and this is related to the immune status of the mother. While examining available data, this review highlights gaps in knowledge regarding allergen characteristics that may influence oral tolerance.
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Affiliation(s)
- Chrysoula Kosmeri
- Department of Pediatrics, University Hospital of Ioannina, Ioannina, Greece
| | - Dimitrios Rallis
- Neonatal Intensive Care Unit, School of Medicine, University of Ioannina, Ioannina, Greece
| | - Maria Kostara
- Department of Pediatrics, University Hospital of Ioannina, Ioannina, Greece
| | - Ekaterini Siomou
- Department of Pediatrics, University Hospital of Ioannina, Ioannina, Greece
| | - Sophia Tsabouri
- Department of Pediatrics, University Hospital of Ioannina, Ioannina, Greece
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10
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Macchiaverni P, Rekima A, van den Elsen L, Renz H, Verhasselt V. Allergen shedding in human milk: Could it be key for immune system education and allergy prevention? J Allergy Clin Immunol 2021; 148:679-688. [PMID: 34310930 DOI: 10.1016/j.jaci.2021.07.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 07/19/2021] [Accepted: 07/19/2021] [Indexed: 02/02/2023]
Abstract
In addition to being a source of nutrients for the developing newborn, human milk contains thousands of bioactive compounds, which influence infant health in the short-term as exemplified by its major benefits on infectious disease prevention. Many of the human milk compounds also have the required characteristics to instruct immune development and guide long-term health. Prebiotics, probiotics, and varied antimicrobial molecules all have the potential to shape the composition and function of the establishing gut microbiota, which is known to be a major determinant of immune function. Another and less explored way human milk can instruct long-term immunity is through antigen shedding. Here, we will review the evidence that antigens from maternal environment and more specifically from allergen sources are found in human milk. We will discuss data from rodent models and birth cohorts showing that allergen shedding in breast milk may influence long-term allergy risk. We will uncover the variables that may underlie heterogeneity in oral tolerance induction and allergy prevention in children breast-fed by allergen-exposed mothers. We will focus on the parameters that control antigen transfer to breast milk, on the unique biological characteristics of allergens in breast milk, and on the milk bioactive compounds that were found to influence immune response in offspring. We propose this understanding is fundamental to guide maternal interventions leading to lifelong allergen tolerance.
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Affiliation(s)
- Patricia Macchiaverni
- School of Medicine and Biomedical Sciences, University of Western Australia, Perth, Australia; Telethon Kids Institute, Perth, Australia
| | - Akila Rekima
- School of Medicine and Biomedical Sciences, University of Western Australia, Perth, Australia; Telethon Kids Institute, Perth, Australia
| | - Lieke van den Elsen
- School of Medicine and Biomedical Sciences, University of Western Australia, Perth, Australia; Telethon Kids Institute, Perth, Australia
| | - Harald Renz
- Institute of Laboratory Medicine, Philipps Universität Marburg, Marburg, Germany; Member of the Universities of Giessen and Marburg Lung Center (UGMLC), Marburg, Germany; German Center for Lung Research (DZL), Marburg, Germany; In Vivo Planetary Health, Worldwide Universities Network (WUN), West New York
| | - Valerie Verhasselt
- School of Medicine and Biomedical Sciences, University of Western Australia, Perth, Australia; Telethon Kids Institute, Perth, Australia; In Vivo Planetary Health, Worldwide Universities Network (WUN), West New York.
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11
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Stahl Skov P, Eller E, Knudsen NP, Schaeffer Senders A, Baumann K, Klueber J, Kuehn A, Ollert M, Bindslev-Jensen C. A novel method for quantifying ingested food allergens in human sera. Clin Exp Allergy 2021; 51:972-975. [PMID: 33991368 DOI: 10.1111/cea.13899] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 04/02/2021] [Accepted: 04/23/2021] [Indexed: 01/15/2023]
Affiliation(s)
- Per Stahl Skov
- Department of Dermatology & Allergy Center, Odense University Hospital, Odense Research Center for Anaphylaxis (ORCA, Odense, Denmark.,RefLab ApS, Copenhagen, Denmark
| | - Esben Eller
- Department of Dermatology & Allergy Center, Odense University Hospital, Odense Research Center for Anaphylaxis (ORCA, Odense, Denmark.,ThermoFisher Scientific, Uppsala, Sweden
| | | | - Annemarie Schaeffer Senders
- Department of Dermatology & Allergy Center, Odense University Hospital, Odense Research Center for Anaphylaxis (ORCA, Odense, Denmark
| | - Katrine Baumann
- RefLab ApS, Copenhagen, Denmark.,Department of Immunology and Microbiology, University of Copenhagen, LEO Foundation Skin Immunology Research Center, Copenhagen, Denmark
| | - Julia Klueber
- Department of Infection & Immunity, Luxembourg Institute of Health (LIH, Esch-sur-Alzette, Luxembourg
| | - Annette Kuehn
- Department of Infection & Immunity, Luxembourg Institute of Health (LIH, Esch-sur-Alzette, Luxembourg
| | - Markus Ollert
- Department of Dermatology & Allergy Center, Odense University Hospital, Odense Research Center for Anaphylaxis (ORCA, Odense, Denmark.,Department of Infection & Immunity, Luxembourg Institute of Health (LIH, Esch-sur-Alzette, Luxembourg
| | - Carsten Bindslev-Jensen
- Department of Dermatology & Allergy Center, Odense University Hospital, Odense Research Center for Anaphylaxis (ORCA, Odense, Denmark
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12
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Hu Y, Wu S, Wang Y, Lin J, Sun Y, Zhang C, Gu J, Yang F, Lv H, Ji X, Zhang Y, Muyldermans S, Wang S. Unbiased Immunization Strategy Yielding Specific Nanobodies against Macadamia Allergen of Vicilin-like Protein for Immunoassay Development. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:5178-5188. [PMID: 33882666 DOI: 10.1021/acs.jafc.1c00390] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Macadamia nut contains important food allergens that potentially cause allergic reactions with severe adverse effects in infants and adults. Reliable and accurate detection of macadamia is critical to avoid allergic reactions. However, knowledge on macadamia allergen is scarce and a reliable detection method has not been reported, yet. In this study, an unbiased immunization and selection strategy was employed to select nanobodies (Nbs) recognizing specifically macadamia allergen, as well as to establish a detection method to unveil a macadamia protein contamination. An alpaca was immunized with a crude protein extract of macadamia followed by construction of a Nb library from its lymphocytes. The panning and screening of this immune Nb repertoire resulted in the selection of six target-specific Nbs. Nb-mediated immuno-capturing combined with mass spectrometry allowed us to identify the target as the macadamia vicilin-like antimicrobial peptides 2-3 (MiAMP2), a novel food allergenic protein abbreviated as Mac i 1. Later on, an immunoassay of a heterologous sandwich ELISA method based on the selected Nb-pairs was established, providing a linear response in the range of 0.442-2,800 μg/mL and with a limit of detection of 27.1 ng/mL. The dedicated immunoassay has been verified by detecting the antigen spiked in food samples. Our study provided evidence for the successful application of the unprejudiced strategy to retrieve Nbs against a priori undefined macadamia allergen. These target-specific Nbs were used to design a highly reliable and effective immunoassay.
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Affiliation(s)
- Yaozhong Hu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Sihao Wu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Yi Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Jing Lin
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Ying Sun
- College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Chuan Zhang
- College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Jiaxin Gu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Feier Yang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Huan Lv
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Xuemeng Ji
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Yan Zhang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Serge Muyldermans
- Cellular and Molecular Immunology, Vrije Universiteit Brussel, 1050 Brussels, Belgium
| | - Shuo Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
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13
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Dreskin SC, Koppelman SJ, Andorf S, Nadeau KC, Kalra A, Braun W, Negi SS, Chen X, Schein CH. The importance of the 2S albumins for allergenicity and cross-reactivity of peanuts, tree nuts, and sesame seeds. J Allergy Clin Immunol 2021; 147:1154-1163. [PMID: 33217410 PMCID: PMC8035160 DOI: 10.1016/j.jaci.2020.11.004] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 11/06/2020] [Accepted: 11/10/2020] [Indexed: 12/17/2022]
Abstract
Allergies to peanuts, tree nuts, and sesame seeds are among the most important food-related causes of anaphylaxis. Important clinical questions include: Why is there a variable occurrence of coallergy among these foods and Is this immunologically mediated? The clinical and immunologic data summarized here suggest an immunologic basis for these coallergies that is based on similarities among the 2S albumins. Data from component resolved diagnostics have highlighted the relationship between IgE binding to these allergens and the presence of IgE-mediated food allergy. Furthermore, in vitro and in vivo experiments provide strong evidence that the 2S albumins are the most important allergens in peanuts for inducing an allergic effector response. Although the 2S albumins are diverse, they have a common disulfide-linked core with similar physicochemical properties that make them prime candidates to explain much of the observed coallergy among peanuts, tree nuts, and sesame seeds. The well-established frequency of cashew and pistachio nut coallergy (64%-100%) highlights how the structural similarities among their 2S albumins may account for observed clinical cross-reactivity. A complete understanding of the physicochemical properties of the 2S albumins in peanuts, tree nuts, and sesame seeds will enhance our ability to diagnose, treat, and ultimately prevent these allergies.
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Affiliation(s)
- Stephen C Dreskin
- Division of Allergy and Clinical Immunology, Department of Medicine, University of Colorado Denver, Aurora, Colo.
| | - Stef J Koppelman
- Food Allergy Research and Resource Program, Department of Food Science and Technology, University of Nebraska, Lincoln, Neb
| | - Sandra Andorf
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio; Sean N. Parker Center for Allergy and Asthma Research, Stanford University School of Medicine, Stanford, Calif
| | - Kari C Nadeau
- Sean N. Parker Center for Allergy and Asthma Research, Stanford University School of Medicine, Stanford, Calif
| | - Anjeli Kalra
- Division of Allergy and Clinical Immunology, Department of Medicine, University of Colorado Denver, Aurora, Colo
| | - Werner Braun
- Sealy Center for Structural Biology and Molecular Biophysics, The University of Texas Medical Branch, Galveston, Tex; Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, Tex
| | - Surendra S Negi
- Sealy Center for Structural Biology and Molecular Biophysics, The University of Texas Medical Branch, Galveston, Tex; Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, Tex
| | - Xueni Chen
- Division of Allergy and Clinical Immunology, Department of Medicine, University of Colorado Denver, Aurora, Colo
| | - Catherine H Schein
- Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, Tex; Institute for Human Infection and Immunity, The University of Texas Medical Branch, Galveston, Tex.
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14
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Abstract
Human milk contains a wide range of immunomodulatory factors, including immunoglobulins, human milk oligosaccharides, cytokines, microbiome, innate factors and food antigens. Maternal diet can influence the content of human milk as it is well-established that dietary antigens can be secreted in human milk after maternal consumption, but whether these dietary antigens promote tolerance or sensitization in the infant is a subject of debate. This review summarizes the current literature on these immunologically active factors in human milk, including the microbiome, innate factors, and maternal diet-derived dietary antigens in the context of development of allergic diseases, with the focus on food allergy.
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15
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Tsai W, Yin H, Chen S, Chang H, Wen H. Development of monoclonal antibody‐based sandwich
ELISA
for detecting major mango allergen Man i1 in processed foods. J Food Saf 2021. [DOI: 10.1111/jfs.12884] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Wen‐Che Tsai
- Department of Food Science and Biotechnology National Chung Hsing University Taiwan
| | - Hsin‐Yi Yin
- Department of Food Science and Biotechnology National Chung Hsing University Taiwan
- Food and Livestock Product Safety Inspection Center National Chung Hsing University Taiwan
| | - Ssu‐Ning Chen
- Department of Food Science and Biotechnology National Chung Hsing University Taiwan
| | - Hung‐Chi Chang
- Department of Golden‐Ager Industry Management Chaoyang University of Technology Taiwan
| | - Hsiao‐Wei Wen
- Department of Food Science and Biotechnology National Chung Hsing University Taiwan
- Graduate Institute of Food Safety National Chung Hsing University Taiwan
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16
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Abstract
Food allergy is a significant public health concern, with a rising prevalence. Elimination diets remain the cornerstone of food allergy management, and they are not without nutritional risk. Children who avoid nutritionally important foods, such as milk or multiple foods allergens, may be at greater risk. Even adults with food allergies may encounter challenges to meet current recommended dietary guidelines for health and reduced risk of chronic disease. The type of food allergy disorder will also impact nutritional risk. A food allergy affects food choices, nutritional intake, and health; therefore, guidance to provide nutritionally appropriate substitutes within the context of the elimination diet is invaluable.
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Affiliation(s)
- Marion Groetch
- From the Division of Pediatric Allergy and Immunology, Icahn School of Medicine at Mount Sinai, New York, New York, and
| | - Carina Venter
- From the Division of Pediatric Allergy and Immunology, Icahn School of Medicine at Mount Sinai, New York, New York, and
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17
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Sena-Torralba A, Pallás-Tamarit Y, Morais S, Maquieira Á. Recent advances and challenges in food-borne allergen detection. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116050] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Abstract
Breast-feeding is currently recommended as the optimal source of nutrition for infants; however, it is known that some individuals can excrete enough food antigens in breast milk to result in allergic reactions in infants, especially those already highly sensitized. These reactions can include non-immunoglobulin E (IgE) mediated reactions, such as atopic dermatitis or gastrointestinal symptoms, and IgE-mediated reactions, such as anaphylaxis, although rare. Food reactions in infants who are breast-fed is a unique challenge because identifying the culprit foods may be more difficult and special consideration must be taken in ensuring proper nutrition during periods of food avoidance for both the infant and mother. This article reviews what is currently known about food allergy in infants who are breast-fed as well as offers insights into a proposed evaluation.
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Affiliation(s)
- Jennifer Pier
- From the Division of Pediatric Allergy and Immunology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
| | - Kirsi M Järvinen
- From the Division of Pediatric Allergy and Immunology, Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
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19
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Bernard H, Turner PJ, Ah-Leung S, Ruiz-Garcia M, Clare Mills EN, Adel-Patient K. Circulating Ara h 6 as a marker of peanut protein absorption in tolerant and allergic humans following ingestion of peanut-containing foods. Clin Exp Allergy 2020; 50:1093-1102. [PMID: 32648641 DOI: 10.1111/cea.13706] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 03/30/2020] [Accepted: 05/29/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Bioaccessibility of food allergens may be a key determinant of allergic reactions. OBJECTIVE To develop a protocol allowing the detection of the major peanut allergen, Ara h 6, in the bloodstream following ingestion of low amounts of peanut and to compare Ara h 6 bioaccessibility by food matrix. We further assessed for differences in absorption in healthy versus peanut-allergic volunteers. METHODS A blood pretreatment combining acidic shock and thermal treatment was developed. This protocol was then applied to blood samples collected from human volunteers (n = 6, healthy controls; n = 14, peanut-allergic patients) at various time-points following ingestion of increasing levels of peanut incurred in different food matrices (cookies, peanut butter and chocolate dessert). Immunodetection was performed using an in-house immunoassay. RESULTS An original pretreatment protocol was optimized, resulting in irreversible dissociation of human antibodies-Ara h 6 immune complex, thus rendering Ara h 6 accessible for its immunodetection. Ara h 6 was detected in samples from all volunteers following ingestion of 300-1000 mg peanut protein, although variations in the kinetics of passage were observed between individuals and matrices. Interestingly, in peanut-allergic subjects, Ara h 6 could be detected following ingestion of lower doses and at higher concentrations than in non-allergic volunteers. CONCLUSIONS AND CLINICAL RELEVANCE The kinetics and intensity of Ara h 6 passage in bloodstream depend on both individual and food matrix. Peanut-allergic patients appear to demonstrate higher absorption rate, the clinical significance of which warrants further evaluation.
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Affiliation(s)
- Hervé Bernard
- CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS)/ Service de Pharmacologie et d'Immunoanalyse, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Paul J Turner
- Section of Inflammation, Repair & Development, National Heart & Lung Institute, Imperial College London, London, UK
| | - Sandrine Ah-Leung
- CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS)/ Service de Pharmacologie et d'Immunoanalyse, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Monica Ruiz-Garcia
- Section of Inflammation, Repair & Development, National Heart & Lung Institute, Imperial College London, London, UK
| | - Elizabeth Naomi Clare Mills
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences and Manchester Institute of Biotechnology, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
| | - Karine Adel-Patient
- CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS)/ Service de Pharmacologie et d'Immunoanalyse, Université Paris-Saclay, Gif-sur-Yvette, France
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20
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Adel-Patient K, Bernard H, Fenaille F, Hazebrouck S, Junot C, Verhasselt V. Prevention of Allergy to a Major Cow's Milk Allergen by Breastfeeding in Mice Depends on Maternal Immune Status and Oral Exposure During Lactation. Front Immunol 2020; 11:1545. [PMID: 32849523 PMCID: PMC7396486 DOI: 10.3389/fimmu.2020.01545] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 06/11/2020] [Indexed: 11/26/2022] Open
Abstract
Background: The high incidence of food allergy in childhood points to the need of elucidating early life factors dictating allergy susceptibility. Here, we aim to address in a mouse model how the exposure to a major cow's milk allergen through breastmilk of mothers with different immune status influences food allergy outcome in offspring. Methods: BALB/cJ future dams were either kept naïve, or sensitized through the oral route using cholera toxin (“orally sensitized”) or through the i.p. route using alum (“i.p. sensitized”), or rendered fully tolerant (oral gavage without any adjuvant) to bovine β-lactoglobulin (BLG). After mating with naïve males and delivery, mothers were orally exposed or not to BLG during the whole lactation. Then, eight groups of lactating mothers were considered: naïve, i.p. sensitized, orally sensitized, or tolerant, each exposed or not during lactation. In order to specifically address breastmilk effects on their allergy susceptibility, pups from naïve-synchronized mothers were cross-fostered by the different groups of treated dams and lactating mothers at delivery. In some experiments, mothers kept their own pups to address a possible in utero effect. BLG antigen, BLG-specific antibodies, and BLG-immune complexes were measured in breastmilk from the different lactating mother groups. Allergic sensitization was monitored in 5-weeks old female offspring (n = 7–8/group of lactating mothers) by determining BLG-specific antibodies in plasma and splenocytes cytokine secretion after i.p. injections of BLG/alum. Allergic reaction to oral BLG challenge was evaluated by measuring mMCP1 in plasma. Results: Offspring was protected from one allergic i.p. sensitization when nursed by i.p. sensitized mothers, independently of BLG exposure during lactation. Orally sensitized dams conferred protection in offspring solely when exposed to BLG during lactation, while naïve mothers did not provide any protection upon BLG exposure. The levels of protection correlated with the levels of BLG-specific antibodies and BLG-immune complex in breastmilk. There was a trend for decreased sensitization in offspring breastfed by tolerant and exposed mothers, which was not associated with transfer of specific antibodies through breastmilk. Protection provided by nursing by treated/exposed mothers was not persistent after a boost i.p. injection of the progeny and then did not protect them from an allergic reaction induced at this time point. No additional in utero effects were evidenced. Conclusion: Our study demonstrates the strong potential of breastmilk to modulate immune response to a major cow's milk allergen in the progeny. It highlights the importance of maternal immune status and of her consumption of the allergen during lactation in dictating the outcomes in offspring. This opens perspectives where modulating maternal immune status might increase the chance of cow's milk allergy prevention in breastfed children.
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Affiliation(s)
- Karine Adel-Patient
- Laboratoire d'Immuno-Allergie Alimentaire, Service de Pharmacologie et d'Immunoanalyse, Département Médicaments et Technologies pour la Santé (DMTS), CEA, INRAE, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Hervé Bernard
- Laboratoire d'Immuno-Allergie Alimentaire, Service de Pharmacologie et d'Immunoanalyse, Département Médicaments et Technologies pour la Santé (DMTS), CEA, INRAE, Université Paris-Saclay, Gif-sur-Yvette, France
| | - François Fenaille
- Laboratoire du Métabolisme des Médicaments, Service de Pharmacologie et d'Immunoanalyse, Département Médicaments et Technologies pour la Santé, CEA, INRAE, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Stéphane Hazebrouck
- Laboratoire d'Immuno-Allergie Alimentaire, Service de Pharmacologie et d'Immunoanalyse, Département Médicaments et Technologies pour la Santé (DMTS), CEA, INRAE, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Christophe Junot
- Laboratoire d'Immuno-Allergie Alimentaire, Service de Pharmacologie et d'Immunoanalyse, Département Médicaments et Technologies pour la Santé (DMTS), CEA, INRAE, Université Paris-Saclay, Gif-sur-Yvette, France.,Laboratoire du Métabolisme des Médicaments, Service de Pharmacologie et d'Immunoanalyse, Département Médicaments et Technologies pour la Santé, CEA, INRAE, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Valérie Verhasselt
- Chair of Human Lactology, School of Molecular Sciences, University of Western Australia, Perth, WA, Australia
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21
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Pahlow Mose A, Mortz E, Stahl Skov P, Mortz CG, Eller E, Sprogøe U, Barington T, Bindslev‐Jensen C. The quest for ingested peanut protein in human serum. Allergy 2020; 75:1721-1729. [PMID: 31715004 DOI: 10.1111/all.14109] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 09/15/2019] [Accepted: 10/07/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND There is mounting evidence that systemic uptake of food allergens is key to triggering anaphylaxis. However, direct proof for this theory is still lacking. The purpose of this study was to quantify the absorption and to determine the absorption kinetics of immunoreactive peanut protein in relation to the allergic response in human. METHODS Quantitative protein assays including mass spectrometry, dot blots and Western blotting were developed to determine the level of Ara h 2 absorption in human serum. The double monoclonal sandwich ELISA was applied to quantify absorbed Ara h 2 and 6, and the basophil histamine release assay and the human passive cutaneous anaphylaxis test were utilized to study the absorption kinetics of immunologically intact peanut proteins. RESULTS The protein assays worked but were not sensitive enough to trace the minute amounts of absorbed Ara h 2 in human serum. The level of Ara h 6 in serum was found to be up to 0.2 ng/mL, but Ara h 2 could not be detected with the ELISA. Both the in vivo and the in vitro methods were successful in demonstrating that: immunoreactive peanut protein was absorbed shortly after ingestion (≤5 minutes); the peanut protein concentration peaks between 1 and 4 hours; and peanut proteins can circulate for at least 48 hours in the bloodstream. CONCLUSION Ingested peanut protein is absorbed systemically and retains its immunoreactive capacity in human serum. However, the precise quantities and the implication for the elicitation of anaphylaxis remains to be elucidated.
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Affiliation(s)
- Anja Pahlow Mose
- Odense Research Center for Anaphylaxis (ORCA) Odense University Hospital Odense Denmark
- Department of Dermatology and Allergy Center Odense University Hospital Odense Denmark
| | | | - Per Stahl Skov
- Odense Research Center for Anaphylaxis (ORCA) Odense University Hospital Odense Denmark
- RefLab Aps. Copenhagen Denmark
| | - Charlotte Gotthard Mortz
- Odense Research Center for Anaphylaxis (ORCA) Odense University Hospital Odense Denmark
- Department of Dermatology and Allergy Center Odense University Hospital Odense Denmark
| | - Esben Eller
- Odense Research Center for Anaphylaxis (ORCA) Odense University Hospital Odense Denmark
- Department of Dermatology and Allergy Center Odense University Hospital Odense Denmark
| | - Ulrik Sprogøe
- Department of Clinical Immunology Odense University Hospital Odense Denmark
| | - Torben Barington
- Department of Clinical Immunology Odense University Hospital Odense Denmark
| | - Carsten Bindslev‐Jensen
- Odense Research Center for Anaphylaxis (ORCA) Odense University Hospital Odense Denmark
- Department of Dermatology and Allergy Center Odense University Hospital Odense Denmark
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22
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Presentation and Management of Food Allergy in Breastfed Infants and Risks of Maternal Elimination Diets. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2020; 8:52-67. [DOI: 10.1016/j.jaip.2019.11.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 11/12/2019] [Accepted: 11/12/2019] [Indexed: 12/14/2022]
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23
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Verschoor D, von Gunten S. Allergy and Atopic Diseases: An Update on Experimental Evidence. Int Arch Allergy Immunol 2019; 180:235-243. [PMID: 31694044 DOI: 10.1159/000504439] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 10/30/2019] [Indexed: 11/19/2022] Open
Abstract
Over the last decades, an increasing appearance of allergies and atopic disorders, such as asthma, dermatitis, and rhinitis, has been observed. The mechanisms of these disorders remain unclear, and therefore the development of novel therapies is limited. Current treatments are often symptomatic, nonspecific, or may have severe side effects. Further insights into the mechanisms of the underlying disease pathogenesis could reveal novel targets for treatment. In this review, we provide an update on recent basic and translational studies that offer novel insights and opportunities for the treatment of patients with atopic disorders.
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Fujimura T, Lum SZC, Nagata Y, Kawamoto S, Oyoshi MK. Influences of Maternal Factors Over Offspring Allergies and the Application for Food Allergy. Front Immunol 2019; 10:1933. [PMID: 31507589 PMCID: PMC6716146 DOI: 10.3389/fimmu.2019.01933] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 07/30/2019] [Indexed: 12/19/2022] Open
Abstract
The prevalence of food allergy has been steadily rising worldwide with the highest incidence noted among younger children, and increasingly recognized as a growing public concern. The first known ingestion of foods often causes allergic reaction, suggesting that sensitization of offspring with food allergens may occur during pregnancy and/or through breastfeeding. This creates a milieu that shapes the neonatal immune responses to these allergens. However, the effects of maternal allergen exposure and maternal sensitization with allergens on development of allergies in offspring remain controversial. This review discusses recent advances from human data in our understanding of how maternal factors, namely, food allergens, allergen-specific immunoglobulins, cytokines, genetics, and environmental factors transferred during pregnancy or breastfeeding influence offspring allergies and how such effects may be applicable to food allergy. Based on information obtained from mouse models of asthma and food allergy, the review also dissects the mechanisms by which maternal factors, including the impact of immune complexes, transforming growth factor-β, vitamin A, and regulatory T-cell responses, contribute to the induction of neonatal tolerance vs. development of allergic responses to maternally transferred allergens.
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Affiliation(s)
- Takashi Fujimura
- Division of Immunology, Boston Children's Hospital, Boston, MA, United States.,Hiroshima Research Center for Healthy Aging (HiHA), Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima, Japan
| | | | - Yuka Nagata
- Division of Immunology, Boston Children's Hospital, Boston, MA, United States.,Division of Gastrointestinal Pathophysiology, Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Seiji Kawamoto
- Hiroshima Research Center for Healthy Aging (HiHA), Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima, Japan
| | - Michiko K Oyoshi
- Division of Immunology, Boston Children's Hospital, Boston, MA, United States.,Department of Pediatrics, Harvard Medical School, Boston, MA, United States
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Individual Sensitization Pattern Recognition to Cow's Milk and Human Milk Differs for Various Clinical Manifestations of Milk Allergy. Nutrients 2019; 11:nu11061331. [PMID: 31197093 PMCID: PMC6628265 DOI: 10.3390/nu11061331] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/06/2019] [Accepted: 06/10/2019] [Indexed: 01/17/2023] Open
Abstract
Cow’s milk allergy (CMA) belongs to one of the most common food allergies in early childhood affecting 2–3% of children under 3 years of age. However, approximately 1% of adults remain allergic to cow’s milk, often showing severe reactions even to traces of milk. In our study, we recruited patients with different clinical manifestations of CMA, including patients with anaphylaxis and less severe symptoms. We assessed the sensitization patterns and allergic responses of these subgroups through different immunological and cell-based methods. Sera of patients were investigated for IgE against whole cow’s milk and its single allergens by CAP- FEIA. In a newly developed in-house multiplex dot assay and a basophil activation test (BAT), cow’s milk allergens, in addition to human breast milk and single allergens from cow’s and human milk were analyzed for IgE recognition and severity of CMA in the included patients. Both the CAP-FEIA routine diagnostic and the multiplex dot test could differentiate CMA with severe from milder allergic reactions by means of the patients’ casein sensitization. The BAT, which mirrors the clinical response in vitro, confirmed that basophils from patients with severe reactions were more reactive to caseins in contrast to the basophils from more moderate CMA patients. By means of this improved component-resolved diagnosis of CMA, individual sensitization patterns could be assessed, also taking sensitization against human milk into consideration.
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Järvinen KM, Martin H, Oyoshi MK. Immunomodulatory effects of breast milk on food allergy. Ann Allergy Asthma Immunol 2019; 123:133-143. [PMID: 31048004 DOI: 10.1016/j.anai.2019.04.022] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/23/2019] [Accepted: 04/23/2019] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To summarize the literature on immunomodulatory effects of breast milk on sensitization and possible mechanisms of action. DATA SOURCES Animal and human studies in PubMed that assessed breastfeeding or breast milk composition in food allergy. STUDY SELECTIONS All recent studies and some older key publications focusing on this topic. RESULTS Human milk composition is highly variable among mothers, which can affect the developing infant immune system. Human milk also affects the infant gut microbiome, which is associated with food allergy. High levels of human milk immune factors (IgA, cytokines, oligosaccharides) are associated with reduced risk of food allergy in the infant; it remains uncertain whether these are directly protective or biomarkers of transferred protection. Animal studies highlight potential mechanisms of protection provided by antigens, transforming growth factor β, and immunocomplexes, yet their relevance is poorly understood in humans. The role of food antigens in human milk in initial sensitization or tolerance induction is unclear. CONCLUSION The protection against allergy development provided by human milk may be attributable to the effect on the infant gut microbiome or direct effects on immune system. Studies evaluating the effect of breastfeeding and human milk composition on food allergy are needed.
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Affiliation(s)
- Kirsi M Järvinen
- Division of Pediatric Allergy and Immunology & Center for Food Allergy, University of Rochester School of Medicine and Dentistry, Rochester, New York.
| | - Hayley Martin
- Department of Public Health Sciences, University of Rochester School of Medicine and Dentistry, Rochester, New York
| | - Michiko K Oyoshi
- Division of Immunology, Boston Children's Hospital and the Departments of Pediatrics, Harvard Medical School, Boston, Massachusetts
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Picariello G, De Cicco M, Nocerino R, Paparo L, Mamone G, Addeo F, Berni Canani R. Excretion of Dietary Cow's Milk Derived Peptides Into Breast Milk. Front Nutr 2019; 6:25. [PMID: 30931311 PMCID: PMC6424006 DOI: 10.3389/fnut.2019.00025] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 02/20/2019] [Indexed: 12/22/2022] Open
Abstract
Nanoflow-HPLC-tandem mass spectrometry (MS/MS) was used to analyze the peptide fraction of breast milk samples collected from a single non-atopic donor on different days (10 samples) after receiving an oral load of cow's milk (by drinking 200 mL of bovine milk). In addition, breast milk was sampled from the same lactating mother over a 6-h period at five time points after drinking cow's milk. We aimed to trace the intra-individual variability and to define a time profile of the excretion of dietary peptides into breast milk. Overall, 21 peptides exclusively originating from both bovine caseins and whey proteins with no match within the human milk proteome were identified in the breast milk samples. These peptides were missing in the breast milk obtained from the mother after a prolonged milk- and dairy-free diet (three samples). The time course of cow's milk-derived β-Lg f(125–135) and β-casein f(81–92) in breast milk was determined from the MS ion intensity of the peptide signals. No intact cow's milk gene products were detected by HPLC-MS/MS analysis and Western blotting with anti-β-Lg antibody, but dot-blot analysis confirmed the occurrence of β-Lg fragments in the enriched peptide fraction of breast milk. These data suggest shifting the analytical perspective for the detection of dietary food allergens in breast milk from intact proteins to digested peptide fragments. The possible sensitization and elicitation potential or the tolerogenic properties of such low amounts of dietary peptides for the breastfed newborns remain to be explored.
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Affiliation(s)
- Gianluca Picariello
- National Research Council (CNR), Institute of Food Sciences, Avellino, Italy
| | - Maristella De Cicco
- National Research Council (CNR), Institute of Food Sciences, Avellino, Italy
| | - Rita Nocerino
- Department of Translational Medical Science, University of Naples "Federico II", Naples, Italy.,CEINGE Advanced Biotechnologies, University of Naples "Federico II", Naples, Italy
| | - Lorella Paparo
- Department of Translational Medical Science, University of Naples "Federico II", Naples, Italy.,CEINGE Advanced Biotechnologies, University of Naples "Federico II", Naples, Italy
| | - Gianfranco Mamone
- National Research Council (CNR), Institute of Food Sciences, Avellino, Italy
| | - Francesco Addeo
- Department of Agriculture, Parco Gussone, University of Naples "Federico II", Portici, Italy
| | - Roberto Berni Canani
- Department of Translational Medical Science, University of Naples "Federico II", Naples, Italy.,CEINGE Advanced Biotechnologies, University of Naples "Federico II", Naples, Italy.,European Laboratory for the Investigation of Food-Induced Diseases, University of Naples "Federico II", Naples, Italy.,Task Force on Microbiome Studies, University "Federico II", Naples, Italy
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28
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Adams OJ, von Gunten S. Recent Advances in Experimental Allergy. Int Arch Allergy Immunol 2018; 177:281-289. [PMID: 30423562 DOI: 10.1159/000494440] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 10/10/2018] [Indexed: 11/19/2022] Open
Abstract
Atopic disorders are on the rise and pose a great burden on society. A better understanding of the underlying mechanisms is required for the development of improved or novel therapeutic strategies. Here we aim to highlight recent advances in experimental allergy, with a particular focus on proposed treatment alternatives for airway disorders, atopic dermatitis, and food allergy. Furthermore, we discuss recent work focusing on molecular and cellular mechanisms that might offer candidates for future preventive or therapeutic intervention.
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