• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Induction of oral immune tolerance by phosphorylated hypoallergic allergen and eluciadation of the action mechanism

Research Project

Project/Area Number 18K05531
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 38050:Food sciences-related
Research InstitutionShinshu University

Principal Investigator

KATAYAMA Shigeru  信州大学, 学術研究院農学系, 教授 (30443922)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords免疫寛容 / アレルギー / 分子修飾 / リン酸化 / 食物アレルギー / 樹状細胞
Outline of Final Research Achievements

The purpose of this study was to elucidate the action mechanism underlying the induction of immune tolerance by phosphorylated antigen with hypoallergenicity. Our results suggest that the phosphorylation of Fag e 2, major buckwheat allergen, resulted in the increment of IL-6 production by activating TLR9 of dendritic cells and the enhancement of IgA production via the increased IL-21 derived from Tfh. On the other hand, the phosphorylation might induce the suppression of degranulation in mast cells owing to the decreased IgE-binding ability via masking of epitope sites; however, it suggests that the degranulation was not completely suppressed by a low degree of phosphorylation.

Academic Significance and Societal Importance of the Research Achievements

アレルギー疾患に対する治療は未だ確立されていない。近年「食べて治す」という免疫寛容誘導を利用した経口減感作療法が注目されているが、アレルギー原因物質(アレルゲン)を摂取させる方法であるため、アナフィラキシー等の重篤な副反応の誘発リスクがあり、標準的治療法とは成り得ていない。本研究では、ソバ主要アレルゲンのアレルギー性はリン酸化により低減化し、ソバアレルギーモデルマウスに一定期間摂取させたところ、アレルギー反応を効果的に抑制させることを明らかにした。本研究で得られた知見はより安全で有効性の高い経口免疫寛容誘導剤の開発に貢献することが期待される。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (8 results)

All 2020 2019 2018

All Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Hydrolysate of highly digestible phosphorylated buckwheat major allergen Fag e 2 attenuates allergic reactions in Fag e 2-sensitized mice2020

    • Author(s)
      Ahmad M. Al Athamneh, Yuta Suzuki, Soichiro Nakamura, Shigeru Katayama
    • Journal Title

      Japanese Journal of Food Chemistry and Safety

      Volume: 27 Issue: 2 Pages: 67-75

    • DOI

      10.18891/jjfcs.27.2_67

    • NAID

      130007893541

    • ISSN
      1341-2094, 2189-6445
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Preparation of an allergen-specific immunomodulator by phosphorylation of a major buckwheat globulin allergen, Fag e 1, with diminished IgE response <i>via</i> Tfh cell activation2019

    • Author(s)
      Ahmad M. Al Athamneh, Supatta Chawalitpong, Yuta Suzuki, Daiki Yamaguchi, Soichiro Nakamura, Shigeru Katayama
    • Journal Title

      Japanese Journal of Food Chemistry and Safety

      Volume: 26 Issue: 2 Pages: 91-98

    • DOI

      10.18891/jjfcs.26.2_91

    • NAID

      130007696216

    • ISSN
      1341-2094, 2189-6445
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Enhanced Anti-Allergic Activity of Milk Casein Phosphopeptide by Additional Phosphorylation in Ovalbumin-Sensitized Mice2019

    • Author(s)
      Lebetwa Ntshepisa、Suzuki Yuta、Tanaka Sachi、Nakamura Soichiro、Katayama Shigeru
    • Journal Title

      Molecules

      Volume: 24 Issue: 4 Pages: 738-738

    • DOI

      10.3390/molecules24040738

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Oral Immunotherapy with a Phosphorylated Hypoallergenic Allergen Ameliorates Allergic Responses More Effectively Than Intact Allergen in a Murine Model of Buckwheat Allergy2018

    • Author(s)
      Katayama Shigeru、Yamaguchi Daiki、Suzuki Yuta、Athamneh Ahmad M. Al、Mitani Takakazu、Satoh Rie、Teshima Reiko、Mine Yoshinori、Nakamura Soichiro
    • Journal Title

      Molecular Nutrition & Food Research

      Volume: 62 Issue: 21 Pages: 1800303-1800303

    • DOI

      10.1002/mnfr.201800303

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] リン酸修飾Fag e 2のIgA産生促進を介したソバアレルギー軽減作用2020

    • Author(s)
      鈴木湧太,山口大樹,中村宗一郎,片山茂
    • Organizer
      日本農芸化学会2020年度大会
    • Related Report
      2019 Research-status Report
  • [Presentation] リン酸修飾がソバ主要アレルゲンFag e 2の好塩基球脱顆粒に及ぼす影響2019

    • Author(s)
      日比野佑香,鈴木湧太,Lebetwa Ntshepisa,中村宗一郎,片山茂
    • Organizer
      日本食品化学学会第25回総会・学術大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Anti-viral and anti-allergic activities of highly phosphorylated casein phosphopeptide2019

    • Author(s)
      Shigeru Katayama
    • Organizer
      2019 AOCS Annual Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Effects of phosphorylation on the structure and enzymatic digestibility of buckwheat allergen, Fag e 22018

    • Author(s)
      Ahmad Athamneh, Takakazu Mitani, Soichiro Nakamura, Shigeru Katayama
    • Organizer
      ISNFF2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi