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Regulation of dental metal allergy symptoms by semaphorins

Research Project

Project/Area Number 21K10003
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57050:Prosthodontics-related
Research InstitutionThe University of Tokushima

Principal Investigator

WATANABE Megumi  徳島大学, 病院, 講師 (40380050)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords金属アレルギー / ケラチノサイト / セマフォリン / セマフォリン3A / 歯科金属アレルギー
Outline of Research at the Start

本研究では、歯科金属アレルギーの病態形成の中で、最初に金属が付着する皮膚や粘膜上でのセマフォリン3Aを中心とした免疫反応に着目し、その発現を調節することで金属アレルギーの発症そのものを制御することを試みる。セマフォリン3Aは皮膚疾患に関わることが知られてきており、アトピー性皮膚炎や自己免疫疾患の治療ターゲットとして近年注目されている。本研究によりセマフォリン3Aが金属アレルギー発症に影響していることを明らかにできれば、金属アレルギーの新規治療方法の開発に寄与することができると考える。

Outline of Final Research Achievements

In this study, we found that Sema3A expression was upregulated in nickel (Ni)-allergy-induced mouse ear skin tissue and in NiCl2-stimulated mouse keratinocytes. Furthermore, Sema3A regulated TNF-α production and MAP kinase activation in keratinocytes. Specific deletion of Sema3A in keratinocytes by conditional knock out in keratinocytes did not affect the infiltration of immune cells such as dendritic cells and T cells, however attenuated edema and ear swelling. These results indicate that Sema3A potentiates the symptoms of metal allergy and should be explored as a potential target for prevention and treatment of metal allergy.

Academic Significance and Societal Importance of the Research Achievements

金属アレルギーは本質的な病態解明が進んでおらず,発症メカニズムには不明な点が多く残されている.本研究により,金属アレルギーの症状の発現にセマフォリン3Aが関与していることが明らかとなった.アトピー等のアレルギー皮膚炎では,セマフォリン3Aの発現増強が症状の減弱に関与していることが知られており,今回の実験結果と逆の様相を示している.これはセマフォリン3Aが金属アレルギー特有の動きをしており,それ故に金属アレルギー治療のターゲットになる可能性を示している.有効な治療方法を開発する上で,本研究の意義は大きいと考える.

Report

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

    (7 results)

All 2023 2022 2021

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

  • [Journal Article] Are Allergy-Induced Implant Failures Actually Hypersensitivity Reactions to Titanium? A Literature Review2023

    • Author(s)
      Watanabe Megumi、Liu Lipei、Ichikawa Tetsuo
    • Journal Title

      Dentistry Journal

      Volume: 11 Issue: 11 Pages: 263-263

    • DOI

      10.3390/dj11110263

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dendritic Cells Directly Recognize Nickel Ions as an Antigen during the Development of Nickel Allergy2022

    • Author(s)
      Lipei Liu, Megumi Watanabe, Norikazu Minami, Mohammad Fadyl Yunizar & Tetsuo Ichikawa
    • Journal Title

      Journal of Oral Health and Biosciences

      Volume: 34 Issue: 2 Pages: 40-52

    • DOI

      10.20738/johb.34.2_40

    • ISSN
      2188-7888, 2189-6682
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Semaphorin 3A: A potential target for prevention and treatment of nickel allergy2022

    • Author(s)
      Lipei Liu, Megumi Watanabe, Norikazu Minami, Mohammad Fadyl Yunizar & Tetsuo Ichikawa
    • Journal Title

      Communications Biology

      Volume: 5 Issue: 1

    • DOI

      10.1038/s42003-022-03641-0

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Biological reaction to magnetic fields.2023

    • Author(s)
      Megumi Watanabe
    • Organizer
      SYMPOSIUM OF DIGITAL & MAGNET DENTISTRY
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 金属アレルギー発症過程におけるセマフォリン3Aの役割2021

    • Author(s)
      劉 黎佩,渡邉 恵,南 憲一,Mohammad Fadyl Yunizar,市川哲雄
    • Organizer
      公社)日本補綴歯科学会第131回学術大会(Web開催)
    • Related Report
      2021 Research-status Report
  • [Presentation] Semaphorin3A Promotes the Development of Nickel Allergy2021

    • Author(s)
      Lipei Liu*, Megumi Watanabe, Mohammad Fadyl Yunizar, Tetsuo Ichikawa
    • Organizer
      International College of Prosthodontics, 19th Biennial Meeting (virtual meeting)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Semaphorin3A: A novel potential target for prevention and treatment of nickel allergy2021

    • Author(s)
      Lipei Liu*, Megumi Watanabe, Mohammad Fadyl Yunizar, Tetsuo Ichikawa
    • Organizer
      第50回日本免疫学会学術集会(ハイブリッド開催)
    • Related Report
      2021 Research-status Report

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

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