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Elucidation of the mechanisms underlying cyclic di-nucleotides-induced rheumatoid arthritis to develop novel therapeutic strategies

Research Project

Project/Area Number 17K08661
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Pathological medical chemistry
Research InstitutionThe University of Tokushima

Principal Investigator

MOTANI Kou  徳島大学, 先端酵素学研究所(オープンイノベ), 講師 (70609049)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
KeywordsSTING / cGAMP / SEMA4D / BioID / Tamavidin / ADAM17 / IFITM3 / シグナル伝達
Outline of Final Research Achievements

Self-DNAs leaked out of nuclei or mitochondria into cytoplasm cause cGAMP- and STING-dependent inflammation, leading to development of polyarthritis. However, molecular mechanisms of the inflammatory signaling via cGAMP-STING are largely unclear. In this study, I found that STING activates the sheddase ADAM metallopeptidase domain 17 (ADAM17) and his activation produces soluble proinflammatory SEMA4D. I also developed an improved BioID method to analyze protein-protein interactions, and identified novel STING interactors such as IFITM3 protein.

Academic Significance and Societal Importance of the Research Achievements

これまでの報告では、環状ジヌクレオチドによってSTINGが活性化すると、転写因子IRF3を介してI型インターフェロンが発現誘導される機構が知られていた。しかし、関節炎の発症にはIRF3やI型インターフェロンは関与しないことから、別の炎症シグナルの存在が示唆されている。本研究では、STINGの新たな下流シグナルとしてADAM17-SEMA4D経路を発見した。関節炎の患者では関節液や血液中においてSEMA4Dの量が著しく増加することが報告されていることから、STING-ADAM17-SEMA4D経路が関節炎の新たな治療標的となる可能性が考えられた。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (5 results)

All 2019 2018 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (2 results) (of which Invited: 1 results) Remarks (1 results)

  • [Journal Article] Phosphoproteomic identification and functional characterization of protein kinase substrates by 2D-DIGE and Phos-tag PAGE2019

    • Author(s)
      Motani K, Kosako H
    • Journal Title

      Biochim Biophys Acta Proteins Proteomics

      Volume: 1867 Issue: 1 Pages: 57-61

    • DOI

      10.1016/j.bbapap.2018.06.002

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Activation of stimulator of interferon genes (STING) induces ADAM17-mediated shedding of the immune semaphorin SEMA4D.2018

    • Author(s)
      Motani, K.*, and Kosako, H.
    • Journal Title

      J. Biol. Chem.

      Volume: 印刷中 Issue: 20 Pages: 7717-7726

    • DOI

      10.1074/jbc.ra118.002175

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 細胞質DNAによって活性化されるシグナル伝達機構とその役割2019

    • Author(s)
      茂谷 康
    • Organizer
      核酸代謝鶴岡カンファレンス
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] BioID法によるビオチン化部位の大規模スクリーニングで明らかとなったSTINGタンパク質の相互作用因子2018

    • Author(s)
      茂谷 康
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Research-status Report
  • [Remarks] 細胞情報学分野::藤井節郎記念医科学センター

    • URL

      http://www.fujii.tokushima-u.ac.jp/cellsignaling/

    • Related Report
      2018 Research-status Report 2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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