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Investigation of new self-defense mechanism with innate immunity and glucocorticoid metabolizing enzyme

Research Project

Project/Area Number 16K09792
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Endocrinology
Research InstitutionHokkaido University

Principal Investigator

SAI SHUJI  北海道大学, 遺伝子病制御研究所, 客員研究員 (50737872)

Research Collaborator Yamada Taisho  
Sato Seiichi  
Takaoka Akinori  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsグルココルチコイドホルモン代謝酵素 / 自然免疫 / サイトカインストーム / グルココルチコイドホルモン / インフルエンザウイルス / RIG-I / 11b-HSD / 11b-HSD1 / グルココルチコイドホルモン代謝
Outline of Final Research Achievements

Innate immune receptor RIG-I, which senses influenza virus (Flu), produces interferon (IFN) to play a critical role for self-defense. Glucocorticoid hormones (GC) suppress abnormal activation of RIG-I. In this study we found the mechanism that intracellular GC metabolizing enzyme 11b-HSD1 suppressed RIG-I signaling. 11b-HSD1, which induced by Flu infection, converts inert GC to active GC suppressing IFN production. GC and RIG-I synergistically induced 11b-HSD1 and independently suppressed RIG-I signaling. There is a cross network and self-defense mechanism between innate immunity and GC signaling.

Academic Significance and Societal Importance of the Research Achievements

重症インフルエンザウイルス(Flu)感染では、サイトカインストームを合併すると、重篤な状態となる。グルココルチコイドホルモン(GC)は、サイトカイン産生を抑制する有効な治療薬である。本研究では、細胞内GC代謝酵素11b-HSD1が、特異的に過剰なサイトカイン産生を抑制することを見出した。この知見は、効率的なGC治療に有用であり、将来的に新たな治療薬の開発に寄与すると思われる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (3 results)

All 2018 2017

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

  • [Journal Article] Peripheral glucocorticoid metabolism selectively modulates innate immune receptor RIG-I2018

    • Author(s)
      Sai Shuji、Yamada Taisho、Katsuyama Naoya、Takaoka Akinori
    • Journal Title

      Endocrine Abstracts

      Volume: 59 Pages: 35-35

    • DOI

      10.1530/endoabs.59.p035

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Peripheral glucocorticoid metabolism selectively modulates innate immune receptor RIG-I2018

    • Author(s)
      Shuji Sai, Taisho Yamada, Naoya Katsuyama, Akinori Takaoka
    • Organizer
      Society for Endocrinolgy BES 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 自然免疫RIG-Iと11b-HSD1による新たな炎症制御機構の解明2017

    • Author(s)
      勝山直哉、齋秀二、山田大翔、高岡晃教
    • Organizer
      第25回日本ステロイドホルモン学会
    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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