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The Humanised NPY-mRFP RBL Reporter Cell Line Is a Fast and Inexpensive Tool for Detection of Allergen-Specific IgE in Human Sera. Diagnostics (Basel) 2022; 12:diagnostics12092063. [PMID: 36140465 PMCID: PMC9497870 DOI: 10.3390/diagnostics12092063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/21/2022] [Accepted: 08/23/2022] [Indexed: 12/01/2022] Open
Abstract
Rat basophilic leukaemia (RBL) cells have been used for decades as a model of high-affinity Immunoglobulin E (IgE) receptor (FcεRI) signalling. Here, we describe the generation and use of huNPY-mRFP, a new humanised fluorescent IgE reporter cell line. Fusion of Neuropeptide Y (NPY) with monomeric red fluorescent protein (mRFP) results in targeting of fluorescence to the granules and its fast release into the supernatant upon IgE-dependent stimulation. Following overnight sensitisation with serum, optimal release of fluorescence upon dose-dependent stimulation with allergen-containing extracts could be measured after 45 min, without cell lysis or addition of any reagents. Five substitutions (D194A, K212A, K216A, K226A, and K230A) were introduced into the FcεRIα cDNA used for transfection, which resulted in the removal of known endoplasmic reticulum retention signals and high surface expression of human FcεRIα* in huNPY-mRFP cells (where * denotes the penta-substituted variant), comparable to the ~500,000 FcεRIα molecules per cell in the RS-ATL8 humanised luciferase reporter, which is a human FcεRIα/FcεRIγ double transfectant. The huNPY-mRFP reporter was used to demonstrate engagement of specific IgE in sera of Echinococcus granulosus-infected individuals by E. granulosus elongation factor EgEF-1β and, to a lesser extent, by EgEF-1δ, which had been previously described as IgE-immunoreactive EgEF-1β/δ.
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Gao H, Jorgensen R, Raghunath R, Nagisetty S, Ng PKW, Gangur V. Creating hypo-/nonallergenic wheat products using processing methods: Fact or fiction? Compr Rev Food Sci Food Saf 2021; 20:6089-6115. [PMID: 34455695 DOI: 10.1111/1541-4337.12830] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 07/14/2021] [Accepted: 07/29/2021] [Indexed: 12/29/2022]
Abstract
Wheat allergy is a potentiallylife-threatening disease that affects millions of people around the world. Food processing has been shown to influence the allergenicity of wheat and other major foods. However, a comprehensive review evaluating whether or not food processing can be used to develop hypo-/nonallergenic wheat products is unavailable. There were three objectives for this study: (1) to critically evaluate the evidence on the effect of fermentation, thermal processing, and enzyme or acid hydrolysis on wheat allergenicity so as to identify the potential for and challenges of using these methods to produce hypo-/nonallergenic wheat products; (2) to identify the molecular effects of food processing needed to create such products; and (3) to map the concept questions for future research and development to produce hypo-/nonallergenic wheat products. We performed literature research using PubMed and Google Scholar databases with various combinations of keywords to generate the data to accomplish these objectives. We found that: (1) food processing significantly modulates wheat allergenicity; while some methods can reduce or even abolish the allergenicity, others can create mega allergens; and (2) fermentation and enzymatic hydrolysis hold the most potential to create novel hypo-/nonallergenic wheat products; however, preclinical validation and human clinical trials are currently lacking. We also identify five specific research concepts to advance the research to enable the creation of hypo-/nonallergenic wheat products for application in food, medical, and cosmetic industries.
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Affiliation(s)
- Haoran Gao
- Food Allergy and Immunology Laboratory, Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan, USA
| | - Rick Jorgensen
- Food Allergy and Immunology Laboratory, Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan, USA
| | - Rajsri Raghunath
- Food Allergy and Immunology Laboratory, Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan, USA
| | - Siddharth Nagisetty
- Food Allergy and Immunology Laboratory, Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan, USA
| | - Perry K W Ng
- Cereal Science Laboratory, Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan, USA
| | - Venu Gangur
- Food Allergy and Immunology Laboratory, Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan, USA
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Barwary NJS, Wan D, Falcone FH. NPY-mRFP Rat Basophilic Leukemia (RBL) Reporter: A Novel, Fast Reporter of Basophil/Mast Cell Degranulation. Methods Mol Biol 2020; 2163:163-170. [PMID: 32766974 DOI: 10.1007/978-1-0716-0696-4_13] [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] [Indexed: 12/17/2023]
Abstract
Humanized rat basophilic leukemia (RBL) reporter cell lines are increasingly used for the detection of allergen-specific IgE and other purposes, such as the detection of allergens and standardization of allergen preparations. Existing reporter systems have many strengths and advantages but can be expensive or require longer incubation times. The new NPY-mRFP reporter cell line addresses such problems, as it requires neither expensive substrates nor overnight incubation for detection of activation. The fusion of Neuropeptide Y (NPY) with monomeric Red Fluorescent Protein (mRFP) results in localization of the fluorescent protein in granules. As NPY-mRFP is preformed in granules, the reporter system activation can be assessed using fluorescence measurements after as soon as 45-60 min, as described in this chapter, without the need to add any substrates.
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Affiliation(s)
- Nafal J S Barwary
- Department of Biology, School of Science, University of Duhok, Duhok, Kurdistan Regional Government, Iraq
| | | | - Franco H Falcone
- Institute for Parasitology, Justus Liebig University Giessen, Biomedizinisches Forschungszentrum Seltersberg (BFS), Giessen, Germany.
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Burnett C, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD, Liebler DC, Marks JG, Shank RC, Slaga TJ, Snyder PW, Andersen FA, Heldreth B. Safety Assessment of Hydrolyzed Wheat Protein and Hydrolyzed Wheat Gluten as Used in Cosmetics. Int J Toxicol 2019; 37:55S-66S. [PMID: 29761728 DOI: 10.1177/1091581818776013] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The Cosmetic Ingredient Review (CIR) Expert Panel (Panel) reviewed the product use, formulation, and safety data on hydrolyzed wheat protein and hydrolyzed wheat gluten, which function as skin- and hair-conditioning agents. The Panel determined that data from clinical and laboratory studies were sufficient to demonstrate that these ingredients will not elicit type 1 immediate hypersensitivity reactions in sensitized individuals and will not induce sensitization when the polypeptide lengths of the hydrolysates do not exceed 30 amino acids. The Panel concluded that hydrolyzed wheat gluten and hydrolyzed wheat protein are safe for use in cosmetics when formulated to restrict peptides to an average molecular weight of 3,500 Da or less.
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Affiliation(s)
- Christina Burnett
- 1 Scientific Analyst/Writer, Cosmetic Ingredient Review, Cosmetic Ingredient Review, Washington, DC, USA
| | - Wilma F Bergfeld
- 2 Expert Panel Member, Cosmetic Ingredient Review, Cosmetic Ingredient Review, Washington, DC, USA
| | - Donald V Belsito
- 2 Expert Panel Member, Cosmetic Ingredient Review, Cosmetic Ingredient Review, Washington, DC, USA
| | - Ronald A Hill
- 2 Expert Panel Member, Cosmetic Ingredient Review, Cosmetic Ingredient Review, Washington, DC, USA
| | - Curtis D Klaassen
- 2 Expert Panel Member, Cosmetic Ingredient Review, Cosmetic Ingredient Review, Washington, DC, USA
| | - Daniel C Liebler
- 2 Expert Panel Member, Cosmetic Ingredient Review, Cosmetic Ingredient Review, Washington, DC, USA
| | - James G Marks
- 2 Expert Panel Member, Cosmetic Ingredient Review, Cosmetic Ingredient Review, Washington, DC, USA
| | - Ronald C Shank
- 2 Expert Panel Member, Cosmetic Ingredient Review, Cosmetic Ingredient Review, Washington, DC, USA
| | - Thomas J Slaga
- 2 Expert Panel Member, Cosmetic Ingredient Review, Cosmetic Ingredient Review, Washington, DC, USA
| | - Paul W Snyder
- 2 Expert Panel Member, Cosmetic Ingredient Review, Cosmetic Ingredient Review, Washington, DC, USA
| | - F Alan Andersen
- 3 Former Director, Cosmetic Ingredient Review, Cosmetic Ingredient Review, Washington, DC, USA
| | - Bart Heldreth
- 4 Executive Director, Cosmetic Ingredient Review, Washington, DC, USA
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Tranquet O, Larré C, Denery-Papini S. Allergic reactions to hydrolysed wheat proteins: clinical aspects and molecular structures of the allergens involved. Crit Rev Food Sci Nutr 2018; 60:147-156. [PMID: 30463417 DOI: 10.1080/10408398.2018.1516622] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Wheat gluten can be chemically or enzymatically hydrolysed to produce functional ingredients useful in food and cosmetics. However severe allergies to hydrolysed wheat proteins (HWP) have been described in Europe and Japan since the early 2000's. Triggering proteins and IgE epitopes were described both for French and Japanese cohorts and appeared remarkably similar leading to define a new wheat allergic entity. Deamidation induced by functionalisation generate neo-allergens responsible for this particular allergy. This article aims to review the processes leading to deamidation and the clinical features of the patients suffering from this allergy. Then the molecular determinants involved in HWP-allergy were exhaustively described and hypothesis regarding the sensitizing mechanism of HWP-allergy are discussed. Finally, current regulation and tools aiming at managing this risk associated with HWP are presented.
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Affiliation(s)
- Olivier Tranquet
- UR1268 BIA - INRA (Institut National De La Recherche Agronomique), Nantes, France
| | - Colette Larré
- UR1268 BIA - INRA (Institut National De La Recherche Agronomique), Nantes, France
| | - Sandra Denery-Papini
- UR1268 BIA - INRA (Institut National De La Recherche Agronomique), Nantes, France
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Tranquet O, Gaudin JC, Patil S, Steinbrecher J, Matsunaga K, Teshima R, Sakai S, Larré C, Denery-Papini S. A chimeric IgE that mimics IgE from patients allergic to acid-hydrolyzed wheat proteins is a novel tool for in vitro allergenicity assessment of functionalized glutens. PLoS One 2017; 12:e0187415. [PMID: 29117222 PMCID: PMC5678878 DOI: 10.1371/journal.pone.0187415] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 10/19/2017] [Indexed: 11/19/2022] Open
Abstract
Background Acid-hydrolyzed wheat proteins (acid-HWPs) have been shown to provoke severe allergic reactions in Europe and Japan that are distinct from classical wheat allergies. Acid-HWPs were shown to contain neo-epitopes induced by the deamidation of gluten proteins. However, products with variable rates of deamidation can be found. Objectives In this work, we studied the effect of the extent of wheat proteins deamidation on its allergenicity. A recombinant chimeric IgE was produced and compared to patients’ IgE for its capacity to assess the IgE-mediated triggering potential of acid-HWPs. Methods Sera from acid-HWP allergic patients were analyzed via ELISA and a functional basophil assay for their IgE reactivity to wheat proteins with different deamidation levels. A chimeric mouse/human IgE (chIgE-DG1) specific for the main neo-epitope, QPEEPFPE, involved in allergy to acid-HWPs was characterized with respect to its functionality and its reactivity compared to that of patients’ IgE. Results Acid-HWPs with medium (30%) and high (50–60%) deamidation levels displayed a markedly stronger IgE binding and capacity to activate basophils than those of samples with weak (15%) deamidation levels. The monoclonal chIgE-DG1 allowed basophil degranulation in the presence of deamidated wheat proteins. ChIgE-DG1 was found to mimic patients’ IgE reactivity and displayed the same ability to rank acid-HWP products in a degranulation assay. Conclusion Increasing the deamidation level of products from 15% to 60% resulted in an approximately 2-fold increase in their antigenicity and a 100-fold increase in their eliciting potential. The chimeric ChIgE-DG1 may be a useful tool to evaluate functionalized glutens for their allergenic potential. By mimicking patient sera reactivity, chIgE-DG1 also provided data on the patients' IgE repertoire and on the functionality of certain repeated epitopes in gluten proteins.
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Affiliation(s)
- Olivier Tranquet
- UR 1268 Biopolymers Interactions Assemblies, INRA, Nantes, France
- * E-mail:
| | | | - Sarita Patil
- Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Johanna Steinbrecher
- Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Kayoko Matsunaga
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Toyoake, Japan
| | | | | | - Colette Larré
- UR 1268 Biopolymers Interactions Assemblies, INRA, Nantes, France
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Kuroda Y, Yuki T, Takahashi Y, Sakaguchi H, Matsunaga K, Itagaki H. Long form of thymic stromal lymphopoietin of keratinocytes is induced by protein allergens. J Immunotoxicol 2017; 14:178-187. [DOI: 10.1080/1547691x.2017.1349220] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Yasutaka Kuroda
- Safety Science Research Laboratories, Kao Corporation, Haga-Gun, Japan
- Department of Materials Science and Engineering, Faculty of Engineering, Yokohama National University, Yokohama, Japan
| | - Takuo Yuki
- Safety Science Research Laboratories, Kao Corporation, Haga-Gun, Japan
| | - Yutaka Takahashi
- Safety Science Research Laboratories, Kao Corporation, Haga-Gun, Japan
| | - Hitoshi Sakaguchi
- Safety Science Research Laboratories, Kao Corporation, Haga-Gun, Japan
| | - Kayoko Matsunaga
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Toyoake, Japan
| | - Hiroshi Itagaki
- Department of Materials Science and Engineering, Faculty of Engineering, Yokohama National University, Yokohama, Japan
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Yagami A, Aihara M, Ikezawa Z, Hide M, Kishikawa R, Morita E, Chinuki Y, Fukutomi Y, Urisu A, Fukushima A, Itagaki Y, Sugiura SI, Tanaka H, Teshima R, Kato Z, Noguchi E, Nakamura M, Saito H, Matsunaga K. Outbreak of immediate-type hydrolyzed wheat protein allergy due to a facial soap in Japan. J Allergy Clin Immunol 2017. [PMID: 28633942 DOI: 10.1016/j.jaci.2017.03.019] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Akiko Yagami
- Department of Allergology, Fujita Health University School of Medicine, Aichi, Japan
| | - Michiko Aihara
- Department of Dermatology, Yokohama City University School of Medicine, Kanagawa, Japan
| | - Zenro Ikezawa
- Department of Dermatology, Yokohama City University School of Medicine, Kanagawa, Japan
| | - Michihiro Hide
- Department of Dermatology, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Reiko Kishikawa
- Department of Allergy, National Hospital Organization Fukuoka Hospital, Fukuoka, Japan
| | - Eishin Morita
- Department of Dermatology, Shimane University Faculty of Medicine, Shimane, Japan
| | - Yuko Chinuki
- Department of Dermatology, Shimane University Faculty of Medicine, Shimane, Japan
| | - Yuma Fukutomi
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | - Atsuo Urisu
- Department of Pediatrics, Fujita Health University School of Medicine, Aichi, Japan
| | | | - Yasuharu Itagaki
- Department of Health and Nutrition, Hokkaido Bunkyo University, Hokkaido, Japan
| | - Shin-Ichi Sugiura
- Faculty of Pharmaceutical Sciences, Department of Clinical Pharmacy, Doshisha Women's College of Liberal Arts, Kyoto, Japan; Center for Research of Laboratory Animals and Medical Research Engineering, Nagoya University, Aichi, Japan
| | - Hiroyuki Tanaka
- Laboratory of Pharmacology, Department of Bioactive Molecules, Gifu Pharmaceutical University, Gifu, Japan; Field of Biofunctional Control, Medical Information Science Division, the United Graduate School of Drug Discovery and Medical Information Science, Gifu University, Gifu, Japan
| | - Reiko Teshima
- Division of Environmental Chemistry, National Institute of Health Sciences, Tokyo, Japan
| | - Zenichiro Kato
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Emiko Noguchi
- Faculty of Medicine, Department of Medical Genetics, University of Tsukuba, Ibaraki, Japan
| | - Masashi Nakamura
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Aichi, Japan
| | - Hirohisa Saito
- Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Kayoko Matsunaga
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Aichi, Japan.
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Okamoto-Uchida Y, Nakamura R, Matsuzawa Y, Soma M, Kawakami H, Ishii-Watabe A, Nishimaki-Mogami T, Teshima R, Saito Y. Different Results of IgE Binding- and Crosslinking-Based Allergy Tests Caused by Allergen Immobilization. Biol Pharm Bull 2016; 39:1662-1666. [PMID: 27725443 DOI: 10.1248/bpb.b16-00389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The physicochemical nature of allergen molecules differ from the liquid phase to the solid phase. However, conventional allergy tests are based on the detection of immunoglobulin (Ig)E binding to immobilized allergens. We recently developed an in vitro allergy testing method using a luciferase-reporting humanized rat mast cell line to detect IgE crosslinking-induced luciferase expression (EXiLE test). The aim of the present study was to evaluate the effects of antigen immobilization on the results of different in vitro allergy tests using two anti-ovalbumin (OVA) antibodies (Abs), E-C1 and E-G5, with different properties in the OVA-induced allergic reaction. Both Abs showed clear binding to OVA with an enzyme-linked immunosorbent assay and by BIAcore analysis. However, only E-C1 potentiated EXiLE response for the liquid-phase OVA. On the other hand, OVA immobilized on solid-phase induced EXiLE responses in both E-C1 Ab- and E-G5 Ab-sensitized mast cells. Western blotting of OVA indicated that E-C1 Ab binds both to OVA monomers and dimers, unlike E-G5 Ab, which probably binds only to the OVA dimer. These results suggest that antigen immobilization enhanced IgE crosslinking ability through multimerization of allergen molecules in the solid phase, resulting in an increase in false positives in IgE binding-based conventional in vitro allergy tests. These findings shed light on the physicochemical nature of antigens as an important factor for the development and evaluation of in vitro allergy tests and suggest that mast cell activation-based allergy testing with liquid-phase allergens is a promising strategy to evaluate the physiological interactions of IgE and allergens.
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Nakamura M, Yagami A, Hara K, Sano-Nagai A, Kobayashi T, Matsunaga K. Evaluation of the cross-reactivity of antigens in Glupearl 19S and other hydrolysed wheat proteins in cosmetics. Contact Dermatitis 2016; 74:346-52. [PMID: 27027256 PMCID: PMC5071728 DOI: 10.1111/cod.12551] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 01/14/2016] [Indexed: 11/29/2022]
Abstract
Background In Japan, over 2000 users of a facial soap containing Glupearl 19S (GP19S), a hydrolysed wheat protein (HWP), developed immediate‐type systemic wheat allergy (HWP‐IWA), and ∼70% of them developed associated contact urticaria. Objectives We investigated whether HWP‐IWA patients cross‐react with other HWPs, and analysed HWP antigenic characteristics. Methods We used 10 types of HWP that are commercially available as cosmetic ingredients, and 16 subjects with HWP‐IWA. We performed an enzyme‐linked immunosorbent assay (ELISA) to evaluate the reactivity to each HWP, and western blotting to evaluate the characteristics of the antigens by using HWP‐IWA patients' serum IgE antibodies. We also performed prick tests with the HWPs. Results The patients reacted to four other HWPs in addition to GP19S, according to ELISA, and this was confirmed by strong reactions in the prick tests to the same four types of HWP. Smears of antigens with molecular weights ranging from the high range to the low range were seen on western blotting with the four HWPs that showed strong reactions in the ELISA and prick tests. Conclusions HWP‐IWA patients cross‐react with other HWPs. The antigens that they cross‐reacted to had a molecular weight distribution similar to that of GP19S present in the HWPs.
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Affiliation(s)
- Masashi Nakamura
- Department of Dermatology, Fujita Health University School of Medicine, Aichi, 470-1192 Japan.,General Research and Development Institute, Hoyu Co., Ltd, Aichi, 480-1136 Japan
| | - Akiko Yagami
- Department of Dermatology, Fujita Health University School of Medicine, Aichi, 470-1192 Japan
| | - Kazuhiro Hara
- General Research and Development Institute, Hoyu Co., Ltd, Aichi, 480-1136 Japan
| | - Akiyo Sano-Nagai
- Department of Dermatology, Fujita Health University School of Medicine, Aichi, 470-1192 Japan.,Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Aichi, 470-1192 Japan
| | - Tsukane Kobayashi
- Department of Dermatology, Fujita Health University School of Medicine, Aichi, 470-1192 Japan
| | - Kayoko Matsunaga
- Department of Dermatology, Fujita Health University School of Medicine, Aichi, 470-1192 Japan.,Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Aichi, 470-1192 Japan
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Falcone FH, Alcocer MJC, Okamoto-Uchida Y, Nakamura R. Use of humanized rat basophilic leukemia reporter cell lines as a diagnostic tool for detection of allergen-specific IgE in allergic patients: time for a reappraisal? Curr Allergy Asthma Rep 2016; 15:67. [PMID: 26452547 DOI: 10.1007/s11882-015-0568-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The interaction between allergens and specific IgE is at the heart of the allergic response and as such lies at the center of techniques used for diagnosis of allergic sensitization. Although serological tests are available, in vivo tests such as double-blind placebo-controlled food challenges (DBPCFC) and skin prick test (SPT) associated to the patients' clinical history are still the main guides to clinicians in many practices around the world. More recently, complex protein arrays and basophil activation tests, requiring only small amounts of whole blood, have been developed and refined, but are yet to enter clinical practice. Similarly, the use of rat basophilic leukemia (RBL) cell lines for detection of allergen-specific IgE has been made possible by stable transfection of the human FcεRI α chain into this cell line more than 20 years ago, but has not found widespread acceptance among clinicians. Here, we review the perceived limitations of diagnostic applications of humanized RBL systems. Furthermore, we illustrate how the introduction of reporter genes into humanized RBL cells is able to overcome most of these limitations, and has the potential to become a new powerful tool to complement the armamentarium of allergists. A demonstration of the usefulness of humanized RBL reporter systems for elucidation of complex IgE sensitization patterns against wheat proteins and a section on the use of fluorescence-based reporter systems in combination with allergen arrays close the review.
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Affiliation(s)
- Franco H Falcone
- Division of Molecular and Cellular Science, School of Pharmacy, University of Nottingham, Boots Science Building, Science Road, NG7 2RD, Nottingham, UK.
| | - Marcos J C Alcocer
- Nutritional Sciences, School of Biosciences, University of Nottingham, Sutton Bonington, LE12 5RD, Nottingham, UK
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Tranquet O, Lupi R, Echasserieau-Laporte V, Pietri M, Larré C, Denery-Papini S. Characterization of Antibodies and Development of an Indirect Competitive Immunoassay for Detection of Deamidated Gluten. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5403-5409. [PMID: 25980542 DOI: 10.1021/acs.jafc.5b00923] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Diversification of gluten applications in the food and cosmetics industries was achieved through the production of water-soluble gluten that can be obtained by deamidation. Current analytical methods dedicated to gluten detection failed to detect deamidated gluten. After immunizing mice with the peptide LQPEEPFPE conjugated to keyhole limpet hemocyanin, five mouse monoclonal antibodies (mAbs) were produced and sequences of bound epitopes were determined as XPXEPFPE, where X is Q or E. The mAbs exhibited high specificity for deamidated gliadins and low molecular weight glutenin subunits. A competitive enzyme-linked immunosorbent assay (ELISA) based on INRA-DG1 mAb was developed with an IC50% of 85 ng/mL and a limit of detection of 25 ng/mL. The intra- and interassay coefficients of variation (CV) were <10% except for the interassay CV of the low-level control (40 ng/mL), which was 20%. This assay was capable of detecting three of the four deamidated gluten samples spiked in rice flour at 20 mg/kg.
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Affiliation(s)
- Olivier Tranquet
- INRA, UR1268 Biopolymers, Interactions, Assemblies, rue de la Geraudiere, Nantes cedex 03, France
| | - Roberta Lupi
- INRA, UR1268 Biopolymers, Interactions, Assemblies, rue de la Geraudiere, Nantes cedex 03, France
| | | | - Manon Pietri
- INRA, UR1268 Biopolymers, Interactions, Assemblies, rue de la Geraudiere, Nantes cedex 03, France
| | - Colette Larré
- INRA, UR1268 Biopolymers, Interactions, Assemblies, rue de la Geraudiere, Nantes cedex 03, France
| | - Sandra Denery-Papini
- INRA, UR1268 Biopolymers, Interactions, Assemblies, rue de la Geraudiere, Nantes cedex 03, France
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Matsunaga K, Kuroda Y, Sakai S, Adachi R, Teshima R, Yagami A, Itagaki H. Anaphylactic augmentation by epicutaneous sensitization to acid-hydrolyzed wheat protein in a guinea pig model. J Toxicol Sci 2015; 40:745-52. [DOI: 10.2131/jts.40.745] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Kayoko Matsunaga
- Department of Dermatology, Fujita Health University School of Medicine
| | - Yasutaka Kuroda
- Department of Material Science and Engineering, Faculty of Engineering, Yokohama National University
| | - Shinobu Sakai
- Division of Biochemistry, National Institute of Health Sciences
| | - Reiko Adachi
- Division of Biochemistry, National Institute of Health Sciences
| | - Reiko Teshima
- Division of Foods, National Institute of Health Sciences
| | - Akiko Yagami
- Department of Dermatology, Fujita Health University School of Medicine
| | - Hiroshi Itagaki
- Department of Material Science and Engineering, Faculty of Engineering, Yokohama National University
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Zogaj D, Ibranji A, Hoxha M. Exercise-induced Anaphylaxis: the Role of Cofactors. Mater Sociomed 2014; 26:401-4. [PMID: 25685088 PMCID: PMC4314164 DOI: 10.5455/msm.2014.26.401-404] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 10/25/2014] [Indexed: 12/27/2022] Open
Abstract
Introduction: Anaphylaxis is a dramatic clinical emergency. It is a very severe, life-threatening generalized or systemic hypersensitivity reaction. Based on immunologic mechanism the anaphylaxis is divided in IgE, IgG, complement, or immune complexes-mediated vs non allergic anaphylaxis. There are a lot of etiologic factors of anaphylaxis, but the three principal immunologic triggers are drugs, insect stings, and foods. Regarding the clinical severity there are several proposed grading systems. The diagnosis of anaphylaxis is mainly clinical. Discussion: The anaphylaxis markers measured in clinical laboratories are total tryptase and histamine. There are some conditions that modulate the onset of anaphylaxis, acting as co- or augmentation factors, which significantly lower the allergen dose necessary for triggering anaphylaxis. The well-documented cofactors of anaphylaxis are physical exercise, alcohol consumption, some foods, co-administration of nonsteroidal anti-inflammatory drugs (NSAID), and concomitant infectious diseases. Development of anaphylaxis depends on the sensitization pattern, the proportion of the involved immunoglobulin classes, characteristics of the allergen, the proportion of the involved immunoglobulin classes, the avidity and affinity of immunoglobulins to bind an allergen, the route of allergen application, and, last but not least, the presence of cofactors of anaphylaxis. Conclusion: Anaphylaxis remains a continuous challenge for the diagnosis and treatment. The adequate management of anaphylaxis requires rapid diagnosis, implementation of primary and secondary prevention measures, and immediate administration of subcutaneous epinephrine.
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Affiliation(s)
- Dukagjin Zogaj
- Service of Allergology and Clinical Immunology, UHC "Mother Theresa" Tirana, Albania
| | - Alkerta Ibranji
- Service of Allergology and Clinical Immunology, UHC "Mother Theresa" Tirana, Albania
| | - Mehmet Hoxha
- Service of Allergology and Clinical Immunology, UHC "Mother Theresa" Tirana, Albania
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Fukutomi Y, Taniguchi M, Nakamura H, Akiyama K. Epidemiological link between wheat allergy and exposure to hydrolyzed wheat protein in facial soap. Allergy 2014; 69:1405-11. [PMID: 25040662 DOI: 10.1111/all.12481] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND Recent studies have highlighted the importance of extra-intestinal routes of sensitization to food-related allergens as the cause of epidemics of food allergy. Instances of Japanese women developing food allergy to wheat after exposure to hydrolyzed wheat protein (HWP) present in facial soap have been reported. However, the epidemiologic impact of these ingredients as a cause of food allergy has not been well studied. METHODS To clarify the epidemiological relationship between food allergy to wheat and contact exposure to HWP, a case-control study of Japanese women aged 20-54 years with self-reported wheat allergy (WA) (cases, n = 157) and age-matched control subjects without WA (controls, n = 449) was performed using a large-scale Web-based research panel. Subjects answered a Web-based questionnaire regarding the use of skin and hair care products, as well as other possible risk factors. RESULTS Current use of an HWP-containing facial soap (Cha no Shizuku; Yuka) was significantly associated with an increased risk of WA (adjusted odds ratio, 2.6; 95% confidence interval, 1.2-5.7; frequencies of current use in cases and controls; 11% and 6%, respectively). Use of Cha no Shizuku was more common in subjects with more recent-onset WA, implying that this soap may have contributed to the recent epidemic of WA. CONCLUSIONS An epidemiological relationship between WA and contact exposure to HWP has been documented. This study implicates a possible role of contact exposure to food-derived protein hydrolysates as a risk factor for the development of food allergy manifesting itself as anaphylaxis.
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Affiliation(s)
- Y. Fukutomi
- Clinical Research Center for Allergy and Rheumatology; Sagamihara National Hospital; Sagamihara Kanagawa Japan
| | - M. Taniguchi
- Clinical Research Center for Allergy and Rheumatology; Sagamihara National Hospital; Sagamihara Kanagawa Japan
| | - H. Nakamura
- Department of Environmental and Preventive Medicine; Graduate School of Medical Science; Kanazawa University; Kanazawa Ishikawa Japan
| | - K. Akiyama
- Clinical Research Center for Allergy and Rheumatology; Sagamihara National Hospital; Sagamihara Kanagawa Japan
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16
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Nakamura M, Yagami A, Hara K, Sano A, Kobayashi T, Aihara M, Hide M, Chinuki Y, Morita E, Teshima R, Matsunaga K. A new reliable method for detecting specific IgE antibodies in the patients with immediate type wheat allergy due to hydrolyzed wheat protein: correlation of its titer and clinical severity. Allergol Int 2014; 63:243-9. [PMID: 24759554 DOI: 10.2332/allergolint.13-oa-0618] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 12/15/2013] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Immediate-type wheat allergy caused by a specific hydrolyzed wheat protein (HWP-IWA), Glupearl 19S (GP19S), typically develops food-dependent exercise-induced anaphylaxis (FDEIA), but is different from conventional FDEIA, or simple wheat allergy in many aspects. The skin prick test (SPT) is considered to be the most effective method for diagnosis of HWP-IWA. As SPT is a relatively qualitative method, we developed quantitative and high-throughput test method for HWP-IWA. METHODS An enzyme-linked immunosorbent assay (ELISA)-based GP19S-specific IgE assay was tested using sera from 14 HWP-IWA and five conventional wheat-dependent exercise-induced anaphylaxis (CO-WDEIA) patients, as well as five healthy subjects. Then a validation study at five different institutions was carried out using sera from 10 HWP-IWA and five CO-WDEIA patients, as well as five healthy subjects different from the previous studies. RESULTS The mean unit values converted from measured absorbance of ELISA were 68.3, 1.3 and 1.1 respectively. Furthermore, the validation study revealed reproducible results across all five institutions, with the standard deviation (SD) being 0.3-0.4 for the healthy group, 0.2-0.6 for the CO-WDEIA group, and 3.8-9.6 for HWP-IWA group except for one case. One case of HWP-IWA was excluded from analysis due to the high SD of 53.3 units, indicating that samples with a unit value > 100.0 will affect inter-laboratory reproducibility. CONCLUSIONS Our findings suggest that the ELISA-based GP19S-specific IgE assay can be used to test HWP-IWA using venous blood samples, except for those with a unit value > 100.0.
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Affiliation(s)
- Masashi Nakamura
- Department of Dermatology, Fujita Health University School of Medicine, Aichi, Japan; General Research and Development Institute, Hoyu Co., Ltd., Aichi, Japan
| | - Akiko Yagami
- Department of Dermatology, Fujita Health University School of Medicine, Aichi, Japan
| | - Kazuhiro Hara
- General Research and Development Institute, Hoyu Co., Ltd., Aichi, Japan
| | - Akiyo Sano
- Department of Dermatology, Fujita Health University School of Medicine, Aichi, Japan
| | - Tsukane Kobayashi
- Department of Dermatology, Fujita Health University School of Medicine, Aichi, Japan
| | - Michiko Aihara
- Department of Environmental-Immunodermatology, Yokohama City University Graduate School of Medicine, Kanagawa, Japan
| | - Michihiro Hide
- Department of Dermatology, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yuko Chinuki
- Department of Dermatology, Shimane University Faculty of Medicine, Shimane, Japan
| | - Eishin Morita
- Department of Dermatology, Shimane University Faculty of Medicine, Shimane, Japan
| | | | - Kayoko Matsunaga
- Department of Dermatology, Fujita Health University School of Medicine, Aichi, Japan
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17
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Mimura T, Yamagami S, Noma H, Kamei Y, Goto M, Kondo A, Matsubara M. Specific IgE for wheat in tear fluid of patients with allergic conjunctivitis. Cutan Ocul Toxicol 2014; 34:25-34. [PMID: 24678747 DOI: 10.3109/15569527.2014.890938] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT Allergy to hydrolyzed wheat protein in facial soap has become a major social issue in Japan. It has been reported that the most frequent early symptoms of allergy to hydrolyzed wheat protein in soap are allergic conjunctivitis and rhinitis, while wheat-dependent exercise-induced anaphylaxis can be induced by long-term use. OBJECTIVE We evaluated the relation between tear fluid levels of specific IgE for wheat and the features of allergic conjunctivitis. METHODS A prospective, non-randomized, cross-sectional study was conducted in 103 patients with moderate to severe allergic conjunctivitis (allergic group) and 20 age- and sex-matched healthy control subjects (control group). Specific IgE for wheat was measured in tear fluid with an immunochromatography assay, and a skin prick test (SPT) was also performed. Symptoms (sneezing, rhinorrhea, nasal obstruction, ocular itching, and lacrimation) were assessed in each subject along with the activities of daily living (ADL) score and the total ocular symptom score for allergic conjunctivitis. A severity score (0, 1, 2, or 3) was assigned for various changes of the palpebral and bulbar conjunctiva, as well as for limbal and corneal lesions associated with allergic conjunctivitis. RESULTS The IgE positive rate and specific IgE score were both higher in the allergic group than in the control group (71.8% versus 40.0% and 1.9 ± 0.7 versus 1.4 ± 0.5). A positive SPT for wheat was also more frequent in the allergic group than in the control group (6.8% versus 0.0%). Within the allergic group, patients with a positive SPT had higher specific IgE scores than patients with a negative SPT (3.3 ± 0.5 versus 1.8 ± 0.6, p < 0.001). In the allergic group, the wheat IgE level in tear fluid was correlated with the severity of allergic conjunctivitis symptoms, including ocular itching (r = 0.665), tearing (r = 0.672), and the total ocular symptom score (r = 0.204). Wheat IgE in tear fluid was also correlated with the severity of rhinitis symptoms, including sneezing (r = 0.610), nose blowing (r = 0.640), and nasal obstruction (r = 0.677). Furthermore, the tear fluid wheat IgE score was correlated with five objective features of allergic conjunctivitis (p < 0.05). CONCLUSIONS These results suggest that wheat allergy may be involved in the development of allergic conjunctivitis.
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Affiliation(s)
- Tatsuya Mimura
- Department of Ophthalmology, University of Tokyo Graduate School of Medicine , Bunkyo-ku , Japan
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Rongfei Z, Wenjing L, Nan H, Guanghui L. Wheat - Dependent Exercise-Induced Anaphylaxis Occurred With a Delayed Onset of 10 to 24 hours After Wheat Ingestion: A Case Report. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2014; 6:370-2. [PMID: 24991463 PMCID: PMC4077966 DOI: 10.4168/aair.2014.6.4.370] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 07/04/2013] [Accepted: 09/13/2013] [Indexed: 12/15/2022]
Abstract
Wheat-dependent exercise-induced anaphylaxis (WDEIA) usually occurs 1 to 4 hours after wheat ingestion and the pathophysiology of WDEIA remains unknown. It is recommended that WDEIA patients refrain from exercise for 4 to 6 hours after wheat ingestion. We report a case of a 51-year-old man who experienced 5 anaphylaxis attacks; two of which occurred 10 to 24 hours after wheat ingestion and exercise. He has a history of chronic gastroenteritis that responds well to antihistamine drugs but not proton pump inhibitors (PPIs) and prokinetic agents. Abdominal CT results implied the possibility of superior mesenteric artery syndrome. We suggest that WDEIA occurs 6 hours after wheat ingestion in cases compounded by obstructive gastrointestinal diseases.
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Affiliation(s)
- Zhu Rongfei
- Department of Allergy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Li Wenjing
- Department of Allergy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huang Nan
- Department of Allergy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liu Guanghui
- Department of Allergy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Affiliation(s)
- Reiko Teshima
- National Institute of Health Sciences, Division of Foods
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20
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Nakamura R, Nakamura R, Sakai S, Adachi R, Hachisuka A, Urisu A, Fukutomi Y, Teshima R. Tissue transglutaminase generates deamidated epitopes on gluten, increasing reactivity with hydrolyzed wheat protein–sensitized IgE. J Allergy Clin Immunol 2013; 132:1436-8. [DOI: 10.1016/j.jaci.2013.07.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 06/20/2013] [Accepted: 07/15/2013] [Indexed: 11/28/2022]
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