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Analysis of exacerbation of allergic skin inflammation

Research Project

Project/Area Number 20K07460
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49030:Experimental pathology-related
Research InstitutionNational Center for Global Health and Medicine

Principal Investigator

Kitajima Masayuki  国立研究開発法人国立国際医療研究センター, その他部局等, 上級研究員 (00401000)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsアレルギー性皮膚炎 / IL-33 / 化学的刺激 / 物理的刺激
Outline of Research at the Start

本研究では、アレルギー性皮膚炎症の多因子相乗作用によって生じる複合的かつ重篤な炎症増悪化メカニズムを理解するために新規炎症増悪化モデルを構築する。特にアレルギー性皮膚炎症の増悪化に関与すると報告されているTSLPとIL-33に着目する。具体的には①アレルゲン(TSLP誘導因子)と強い化学的ストレス(IL-33誘導因子)、②アレルゲンと物理的ストレス(IL-33誘導因子)、③アレルゲンと強い化学的・物理的ストレスを併せた刺激によって生じる重篤な炎症増悪化メカニズムの解析の3点について研究を実施する。

Outline of Final Research Achievements

Atopic dermatitis (AD) is one of the chronic inflammatory skin diseases characterized by type 2 inflammation, impaired skin barrier, and intense itching. The pathogenesis of AD is involved in genetic and environmental factors. The complexity of human AD is not fully reproduced by available animal models. IL-33 is a newly cytokine, and is secreted from inflamed and damaged tissues may be involved in the pathogenesis of AD, but the role of IL-33 in AD is unresolved. To understand the exacerbation factors in skin inflammation, we established novel skin inflammation models using hapten (allergen, Th2 inducer) combined with physical stress (tape stripping) or chemical stress (surfactant, irritant). We found that ST2 (IL-33 receptor)-deficient (KO) mice were reduced skin inflammation in these models, but not hapten-induced inflammation. These results suggest that IL-33 has a novel role for promoting skin inflammation as an exacerbation factor.

Academic Significance and Societal Importance of the Research Achievements

申請者は、アレルゲンと物理的刺激もしくは化学的刺激を複合的に組み合わせた新規皮膚炎症増悪化モデルマウスを構築した。さらにアトピー性皮膚炎病態との関連がみられるIL-33の受容体ST2を欠損したマウスを用いた解析から、IL-33がこれらのマウスモデルの皮膚炎増悪化因子の一つであることを明らかにした。本研究成果は、新たな炎症増悪化メカニズムの理解と根治治療法開発に向けた基礎研究基盤となることが期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (4 results)

All 2023 2022 2021 2020

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

  • [Journal Article] Epithelial cell-derived cytokine TSLP modulates metabolic program of regulatory T cells by enhancing fatty acid uptake to suppress the intestinal inflammation2023

    • Author(s)
      Kasuya T., Tanaka S., Etori K., Shoda J., Hattori K., Endo Y., Kitajima M., Kageyama T., Iwamoto T., Yokota M., Iwata A., Suto A., Suzuki K., Suzuki H., Ziegler SF., and Nakajima H
    • Journal Title

      Sci. Rep.

      Volume: 13 Issue: 1 Pages: 1653-1653

    • DOI

      10.1038/s41598-023-28987-1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Critical Role of TSLP Receptor on CD4 T Cells for Exacerbation of Skin Inflammation2020

    • Author(s)
      Kitajima Masayuki、Kubo Masato、Ziegler Steven F.、Suzuki Harumi
    • Journal Title

      The Journal of Immunology

      Volume: - Issue: 1 Pages: 27-35

    • DOI

      10.4049/jimmunol.1900758

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Themis in peripheral CD8 T cells regulates hapten-induced allergic skin inflammation.2022

    • Author(s)
      M Kitajima, T Okada, H Suzuki
    • Organizer
      The 51th Annual meeting of the Japanese society for Immunology
    • Related Report
      2022 Annual Research Report
  • [Presentation] Low dose of hapten-induced allergic skin inflammation is aggravated in Themis overexpressing mice.2021

    • Author(s)
      M Kitajima, T Okada, H Suzuki
    • Organizer
      The 50th Annual meeting of the Japanese society for Immunology
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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