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Role of Allergin-1 ligand in the food anaphylaxis model

Research Project

Project/Area Number 21H02709
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 49030:Experimental pathology-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

Tahara Satoko  筑波大学, 生存ダイナミクス研究センター, 講師 (20360589)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2022: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2021: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Keywords食物アレルギー / 好塩基球 / Allergin-1リガンド / IgE / 肥満細胞 / アナフィラキシー / アレルギー / Allergin-1 / 食物アナフィラキシー / マスト細胞 / IgE抗体 / アラジンー1 / 抑制性免疫受容体
Outline of Research at the Start

食物アナフィラキシーの発症には好塩基球の過剰な活性化が深く関与しており、Allergin-1抑制性免疫受容体は好塩基球の活性化を制御することで食物アナフィラキシーの発症を抑える。 このことから本申請課題では、食物アナフィラキシーの病態解明と予防法の開発を目的として、食物アナフィラキシーモデルにおける①Allergin-1リガンドの生理的機能、②Allergin-1リガンドによる食物アナフィラキシー発症予防効果の検証、③ヒト食物アナフィラキシーの病態における好塩基球上のAllergin-1を介した抑制機序について明らかにする。

Outline of Final Research Achievements

Mast cells play a central role in type 1 allergic reactions mediated by allergen-IgE-bound FcεRI signaling. Allergy inhibitory receptor 1 (Allergin-1) inhibits FcεRI-mediated signaling in mast cells and plays a vital role in suppressing systemic and cutaneous anaphylaxis and allergic airway hyperresponsiveness, but the ligand for Allergin-1 has not yet been identified. Here, we found that a putative ligand for Allergin-1 was expressed on extracellular vesicles isolated from bone-marrow-derived dendritic cells. We identified Annexin A5 as a functional ligand for Allergin-1 by biochemical and mass-spectrometry analyses. Annexin A5 bound to human and mouse Allergin-1 and suppressed IgE-dependent degranulation from mast cells. Local Annexin A5 administration to the ear skin ameliorated passive cutaneous anaphylaxis in wild-type, but not Allergin-1-deficient, mice. Thus, Annexin A5 is a functional ligand for Allergin-1 that ameliorates type I hypersensitivity.

Academic Significance and Societal Importance of the Research Achievements

I型アレルギーは、IgE抗体依存的に脱顆粒反応するエフェクター相から惹起されることから、ヒト化抗IgE抗体(Omalizumab)が開発された。しかし、OmalizumabはFcεRIに結合していないフリーのIgEに結合し、FcεRIに結合しているIgEには結合しない。Annexin A5は、IgEで感作されたマスト細胞の脱顆粒反応をAllergin-1依存的に抑制した。このことから、Annexin A5がAllergin-1を介してI型アレルギー疾患の新しい治療法の開発に貢献できる可能性がある。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (7 results)

All 2024 2023 2021

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (3 results)

  • [Journal Article] Human basophils promote IgE-dependent oral allergen-induced anaphylaxis in humanized mice2024

    • Author(s)
      Lin Yu-Hsien、Tahara-Hanaoka Satoko、Shibuya Akira
    • Journal Title

      Allergology International

      Volume: 73 Issue: 2 Pages: 345-347

    • DOI

      10.1016/j.alit.2023.11.007

    • ISSN
      1323-8930, 1440-1592
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Annexin <scp>A5</scp> inhibits mast cell activation via Allergin‐1 immunoreceptor2023

    • Author(s)
      Almeida Mariana Silva、Tahara‐Hanaoka Satoko、Shibagaki Shohei、Niizuma Kouta、Hitomi Kaori、Shinkai Yasuhiro、Shibayama Shiro、Shibuya Akira
    • Journal Title

      Allergy

      Volume: 78 Issue: 12 Pages: 3258-3260

    • DOI

      10.1111/all.15851

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] An inhibitory immunoreceptor, Allergin-1, suppresses FITC-induced type 2 contact hypersensitivity2021

    • Author(s)
      Almeida M, Shibagaki S, Tahara-Hanaoka S, Shibayama S, Shibuya A
    • Journal Title

      BBRC(Biochem Biophys Res Commun)

      Volume: 579 Pages: 146-152

    • DOI

      10.1016/j.bbrc.2021.09.048

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Selective expression of a C-type lectin receptor, Clec12b, on skin mast cells2021

    • Author(s)
      Iijima Ayana、Kanemaru Kazumasa、Wang Yaqiu、Nabekura Tsukasa、Nakamura Yoshiyuki、Fujisawa Yasuhiro、Mori Daiki、Ohmuraya Masaki、Yamasaki Sho、Tahara-Hanaoka Satoko、Shibuya Akira
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 561 Pages: 101-105

    • DOI

      10.1016/j.bbrc.2021.04.097

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Role of human basophil in oral allergen-induced anaphylaxis in humanized mice.2021

    • Author(s)
      Lin Yu-Hsien; Tahara-Hanaoka Satoko, Shibuya Akira
    • Organizer
      The 50th Annual Meetings of the Japanese Society for Immunology
    • Related Report
      2021 Annual Research Report
  • [Presentation] An inhibitory immunoreceptor, Allergin-1, suppresses FITC-induced contact dermatitis2021

    • Author(s)
      Almeida Silva Mariana, Tahara-Hanaoka Satoko, Shibagaki Shohei, Shibayama Shiro, Shibuya Akira
    • Organizer
      The 50th Annual Meetings of the Japanese Society for Immunology
    • Related Report
      2021 Annual Research Report
  • [Presentation] Selective expression of a novel C-type lectin receptor, Clec12b2021

    • Author(s)
      Ayana Iijima, Kazumasa Kanemaru, Tsukasa Nabekura, Satoko Tahara-Hanaoka, Akira Shibuya
    • Organizer
      The 50th Annual Meetings of the Japanese Society for Immunology
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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