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Takaiwa F. Next-Generation Allergen-Specific Immunotherapy for Japanese Cedar Pollinosis Using Molecular Approaches. Immunotargets Ther 2021; 10:213-224. [PMID: 34239843 PMCID: PMC8259616 DOI: 10.2147/itt.s276874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/02/2021] [Indexed: 11/23/2022] Open
Abstract
Japanese cedar (JC) pollinosis is the most major IgE-mediated type I allergic disease in Japan. Allergen-specific immunotherapy is the only curative treatment for allergic diseases. Subcutaneous immunotherapy and sublingual immunotherapy have been introduced in Japan for JC pollinosis, but do not avoid some adverse side effects, because the natural allergens used as tolerogens cross-link with specific IgE types on mast cells and basophils. To make immunotherapy for JC pollinosis safer, more effective and convenient, rice-based oral allergy vaccines using hybrid peptides composed of multiple T-cell epitopes or recombinant deconstructed hypoallergenic derivatives derived from major allergens — Cry j 1 and Cry j 2 — have been developed and their efficacy and safety evaluated by oral administration of transgenic rice seeds. Furthermore, recombinant modified JC allergens conjugated with various immunomodulatory molecules and DNA-based vaccines have been created and their efficacy assessed.
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Affiliation(s)
- Fumio Takaiwa
- Soul Signal Institute, Kojyohama, Shiraoi, Hokkaido, 059-0641, Japan.,Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, 305-8602, Japan
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2
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Endo T, Asaka D, Nakayama T, Saito S, Kodama H, Mitsuyoshi R, Sugimoto N, Omae S, Takagi H, Wakasa Y, Ozawa K, Takano M, Takaiwa F, Kojima H, Saito S. Long-term oral administration of transgenic rice containing cedar pollen T-cell epitopes potentially improves medication- and allergy-related quality-of-life scores. Allergy Asthma Proc 2021; 42:293-300. [PMID: 34187621 DOI: 10.2500/aap.2021.42.210011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Background: We previously developed a transgenic rice that contains seven linked human predominant T-cell epitopes (7Crp) derived from Japanese cedar (JC) pollen allergens Cry j 1 and Cry j 2. Oral administration of 80 g of transgenic rice for 20 weeks suppressed allergen-specific T-cell proliferation in participants with JC pollinosis, but their clinical symptoms did not improve. Objective: We examined the clinical efficacy of low-dose (5 g and 20 g) intake of the transgenic rice administered for two successive seasons. Methods: In this randomized, double-blind, placebo controlled study, transgenic rice seeds (5 g or 20 g) were orally administered to the participants for 24 weeks in each of two successive JC pollen seasons. We analyzed T-cell proliferation and cytokine expression, and monitored symptom and medication scores during the pollen season. Quality of life (QOL) was evaluated by using the Japanese Allergic Rhinitis Quality of Life Standard Questionnaire (JRQLQ). Results: Specific T-cell proliferation after stimulation with 7Crp, Cry j 1, and Cry j 2 was significantly suppressed in the second JC pollen season. No significant differences were found among the three groups (5 g, 20 g, and placebo) with regard to clinical symptoms or medication scores in the first season. However, the medication scores and face scale for overall condition of JRQLQ improved in the 5-g transgenic rice group in the second season, although careful re-examination with a large sample size is necessary to confirm the results. Conclusion: Low-dose oral administration of transgenic rice that contains 7Crp significantly reduced allergen-specific T-cell responses and improved medication scores during the second season of administration. Thus, oral intake of the transgenic rice has the potential to induce immune tolerance to JC pollen allergens when administered for at least two successive seasons.
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Affiliation(s)
- Tomonori Endo
- From the Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Daiya Asaka
- From the Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Tsuguhisa Nakayama
- From the Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Shota Saito
- From the Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Hiroki Kodama
- From the Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Ryoto Mitsuyoshi
- From the Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Naoki Sugimoto
- From the Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Sachiko Omae
- From the Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Hidenori Takagi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan; and
| | - Yuhya Wakasa
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan; and
| | - Kenjirou Ozawa
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan; and
| | - Makoto Takano
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan; and
| | - Fumio Takaiwa
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan; and
| | - Hiromi Kojima
- From the Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Saburo Saito
- Division of Molecular Immunology, Research Center for Medical Science, Jikei University School of Medicine, Tokyo, Japan
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Irani C, Haczku A. Grains of Wisdom: Transgenic Rice for Oral Allergen Immunotherapy in Japanese Cedar Pollen-Allergic Patients. Int Arch Allergy Immunol 2020; 182:106-108. [PMID: 33321507 DOI: 10.1159/000513627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 12/03/2020] [Indexed: 11/19/2022] Open
Affiliation(s)
- Carla Irani
- Internal Medicine and Clinical Immunology, Saint Joseph University, Beirut, Lebanon
| | - Angela Haczku
- Department of Internal Medicine, UC Davis Lung Center, University of California, Davis, California, USA,
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Bousquet J, Grattan CE, Akdis CA, Eigenmann PA, Hoffmann-Sommergruber K, Agache I, Jutel M. Highlights and recent developments in allergic diseases in EAACI journals (2019). Clin Transl Allergy 2020; 10:56. [PMID: 33292572 PMCID: PMC7712618 DOI: 10.1186/s13601-020-00366-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 11/26/2020] [Indexed: 12/14/2022] Open
Abstract
The European Academy of Allergy and Clinical Immunology (EAACI) owns three journals: Allergy, Pediatric Allergy and Immunology and Clinical and Translational Allergy. One of the major goals of EAACI is to support health promotion in which prevention of allergy and asthma plays a critical role and to disseminate the knowledge of allergy to all stakeholders including the EAACI junior members. There was substantial progress in 2019 in the identification of basic mechanisms of allergic and respiratory disease and the translation of these mechanisms into clinics. Better understanding of molecular and cellular mechanisms, efforts for the development of biomarkers for disease prediction, novel prevention and intervention studies, elucidation of mechanisms of multimorbidities, entrance of new drugs in the clinics as well as recently completed phase three clinical studies and publication of a large number of allergen immunotherapy studies and meta-analyses have been the highlights of the last year.
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Affiliation(s)
- J Bousquet
- MACVIA-France, Montpellier, France. .,CHRU Arnaud de Villeneuve, 371 Avenue du Doyen Gaston Giraud, 34295, Montpellier Cedex 5, France.
| | - C E Grattan
- St John's Institute of Dermatology, Guy's Hospital, London, UK
| | - C A Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University Zurich, Davos, Switzerland
| | - P A Eigenmann
- Pediatric Allergy Unit, University Hospitals of Geneva, Geneva, Switzerland
| | - K Hoffmann-Sommergruber
- Depart of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - I Agache
- Transylvania University Brasov, Brasov, Romania
| | - M Jutel
- Department of Clinical Immunology, Wrocław Medical University, Wrocław, Poland.,ALL-MED Medical Research Institute, Wrocław, Poland
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Saito S, Takagi H, Wakasa Y, Ozawa K, Takaiwa F. Safety and efficacy of rice seed-based oral allergy vaccine for Japanese cedar pollinosis in Japanese monkeys. Mol Immunol 2020; 125:63-69. [DOI: 10.1016/j.molimm.2020.06.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 11/26/2022]
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Endo T, Asaka D, Nakayama T, Saito S, Kodama H, Mitsuyoshi R, Takaishi S, Sugimoto N, Omae S, Takagi H, Wakasa Y, Ozawa K, Takano M, Takaiwa F, Kojima H, Saito S. Immunological and Symptomatic Effects of Oral Intake of Transgenic Rice Containing 7 Linked Major T-Cell Epitopes from Japanese Cedar Pollen Allergens. Int Arch Allergy Immunol 2020; 182:109-119. [PMID: 32854094 DOI: 10.1159/000509996] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 07/08/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND A rice-based peptide vaccine containing 7 linked human predominant T-cell epitopes (7Crp) derived from Japanese cedar (JC) pollen allergens, Cry j 1 and Cry j 2, was developed. Here, we examined the efficacy and safety of this transgenic rice in JC pollinosis patients. METHODS Transgenic rice (5, 20, and 80 g) was administered orally. We measured the T-cell proliferative activity against 7Crp, Cry j 1, and Cry j 2; the cytokine expression levels; and specific IgE and IgG4 production levels. In addition, the symptom and medication scores were monitored during the pollen season, and quality of life (QOL) was evaluated. RESULTS T-cell proliferative activities to Cry j 1, Cry j 2, and 7Crp were significantly depressed in a dose-dependent manner. Oral intake of 80 g transgenic rice for 20 weeks resulted in significant suppression of allergen-specific T-cell proliferation with downregulation of IL-13 and upregulation of IL-10 levels but no changes to specific IgE and IgG4 levels. The QOL symptom scores for allergic rhinitis were not significantly improved. CONCLUSIONS Allergen-specific T-cell responses were significantly reduced by oral intake of transgenic rice in a dose-dependent manner. However, neither medication score nor QOL symptom scores could be improved during the JC pollen season with oral intake of transgenic rice for 20 weeks.
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Affiliation(s)
- Tomonori Endo
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan, .,Department of Otorhinolaryngology, Federation of National Public Service Personnel Mutual Aid Associations, Tokyo Kyosai Hospital, Tokyo, Japan,
| | - Daiya Asaka
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Tsuguhisa Nakayama
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Shota Saito
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Hiroki Kodama
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Ryoto Mitsuyoshi
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Shinya Takaishi
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Naoki Sugimoto
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Sachiko Omae
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Hidenori Takagi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ibaraki, Japan
| | - Yuhya Wakasa
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ibaraki, Japan
| | - Kenjiro Ozawa
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ibaraki, Japan
| | - Makoto Takano
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ibaraki, Japan
| | - Fumio Takaiwa
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ibaraki, Japan
| | - Hiromi Kojima
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Saburo Saito
- Division of Molecular Immunology, Research Center for Medical Science, Jikei University School of Medicine, Tokyo, Japan
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Takaiwa F, Yang L, Takagi H, Maruyama N, Wakasa Y, Ozawa K, Hiroi T. Development of Rice-Seed-Based Oral Allergy Vaccines Containing Hypoallergenic Japanese Cedar Pollen Allergen Derivatives for Immunotherapy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:13127-13138. [PMID: 31682438 DOI: 10.1021/acs.jafc.9b05421] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Allergen-specific immunotherapy is the only available curative treatment for IgE-mediated allergen diseases. A safe hypoallergenic allergen derivative with high efficiency is required as a tolerogen to induce immune tolerance to the causitive allergens. In this study, to generate a rice-based oral allergy vaccine for Japanese cedar (JC) pollinosis, the tertiary structures of major JC pollen allergens, Cry j 1 and Cry j 2, were more completely destructed by shuffling than the previous ones without losing immunogenicity and then were specifically expressed in the endosperm of transgenic rice seed. They accumulated at high levels and were deposited in endoplasmic reticulum (ER) and ER-derived protein bodies. The low allergenicity of these deconstructed Cry j 1 and Cry j 2 allergens was evaluated by examining their binding activities to the specific IgE antibody and by the basophil degranulation test.
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Affiliation(s)
- Fumio Takaiwa
- Institute of Agrobiological Sciences , National Agriculture and Food Research Organization Kannondai 2-1-2 , Tsukuba , Ibaraki 305-8602 , Japan
| | - Lijun Yang
- Institute of Agrobiological Sciences , National Agriculture and Food Research Organization Kannondai 2-1-2 , Tsukuba , Ibaraki 305-8602 , Japan
| | - Hidenori Takagi
- Institute of Agrobiological Sciences , National Agriculture and Food Research Organization Kannondai 2-1-2 , Tsukuba , Ibaraki 305-8602 , Japan
| | - Nobuyuki Maruyama
- Division of Agronomy and Horticultural Science, Graduate School of Agriculture , Kyoto University , Gokasho Uji, Kyoto 611-0011 , Japan
| | - Yuhya Wakasa
- Institute of Agrobiological Sciences , National Agriculture and Food Research Organization Kannondai 2-1-2 , Tsukuba , Ibaraki 305-8602 , Japan
| | - Kenjiro Ozawa
- Institute of Agrobiological Sciences , National Agriculture and Food Research Organization Kannondai 2-1-2 , Tsukuba , Ibaraki 305-8602 , Japan
| | - Takachika Hiroi
- Allergy and Immunology Project , Tokyo Metropolitan Institute of Medical Science , 2-1-6 Kamikitazawa , Setagaya-ku, Tokyo 156-8506 , Japan
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Takaishi S, Saito S, Endo T, Asaka D, Wakasa Y, Takagi H, Ozawa K, Takaiwa F, Otori N, Kojima H. T-cell activation by transgenic rice seeds expressing the genetically modified Japanese cedar pollen allergens. Immunology 2019; 158:94-103. [PMID: 31323138 PMCID: PMC6742765 DOI: 10.1111/imm.13097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 06/23/2019] [Accepted: 06/25/2019] [Indexed: 12/31/2022] Open
Abstract
Transgenic rice seeds that contain genetically modified Cry j 1 and Cry j 2, the two major allergens of Cryptomeria japonica (Japanese cedar; JC), have been developed as immunotherapeutic candidates for JC pollinosis. Because the transgenic rice (TG-rice) seeds express allergens containing whole amino acid sequences of Cry j 1 and Cry j 2 in the endosperm tissue (edible part of rice grain), they can potentially target all Cry j 1- and Cry j 2-specific T-cells. However, it was unknown whether antigenicity of Cry j 1 and Cry j 2 could be completely preserved in TG-rice seeds. We verified the antigenicity of TG-rice seeds to T-cells through the analysis of the proliferative responses of T-cells in Cry j 1- or Cry j 2-immunized mice or T-cell lines to TG-rice seed extract. First, four mouse strains were immunized with Cry j 1 or Cry j 2. T-cells in the immunized mice proliferated on treatment with TG-rice seed extract, but not non-transgenic wild-type rice (WT-rice) seed extract. Furthermore, T-cell lines were established from the spleen cells of the immunized mice. Each T-cell line resulted in a proliferative response to TG-rice seed extract, but not to WT-rice seed extract, suggesting that TG-rice seeds certainly express T-cell epitopes corresponding to T-cell lines. Considering the modified amino acid sequences of Cry j 1 and Cry j 2 in TG-rice seeds, the expression of specific T-cell epitopes suggested that TG-rice seeds express all possible T-cell epitope repertoires of Cry j 1 and Cry j 2.
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Affiliation(s)
- Shinya Takaishi
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan.,Division of Molecular Immunology, Research Center for Medical Sciences, Jikei University School of Medicine, Tokyo, Japan
| | - Saburo Saito
- Division of Molecular Immunology, Research Center for Medical Sciences, Jikei University School of Medicine, Tokyo, Japan
| | - Tomonori Endo
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Daiya Asaka
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Yuhya Wakasa
- Plant Molecular Farming Unit, Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ibaraki, Japan
| | - Hidenori Takagi
- Plant Molecular Farming Unit, Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ibaraki, Japan
| | - Kenjiro Ozawa
- Plant Molecular Farming Unit, Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ibaraki, Japan
| | - Fumio Takaiwa
- Plant Molecular Farming Unit, Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ibaraki, Japan
| | - Nobuyoshi Otori
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
| | - Hiromi Kojima
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, Japan
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