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Identification of Bacterial and Fungal Proteases that Activate Gasdermin Family Molecules to cause Pyroptosis

Research Project

Project/Area Number 22K19426
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 49:Pathology, infection/immunology, and related fields
Research InstitutionKanazawa University

Principal Investigator

Tsuchiya Kohsuke  金沢大学, がん進展制御研究所, 准教授 (50437216)

Project Period (FY) 2022-06-30 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2024: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2023: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
KeywordsPyroptosis / Gasdermin / Protease / GSDMD / Pseudomonas aeruginosa / Aeromonas veronii / パイロトーシス / プロテアーゼ / ガスダーミン / 細菌プロテアーゼ / 細菌
Outline of Research at the Start

パイロトーシスは、ネクローシス様の形態変化を伴うプログラム細胞死の一種であり、炎症誘導や感染防御に関わる。その誘導にはプロテアーゼによるガスダーミン(GSDM) ファミリー分子の成熟化が必須である。本研究は、細菌・真菌由来プロテアーゼがGSDMを成熟化する可能性に直目している。細菌・真菌プロテアーゼによるGSDM依存的なパイロトーシス誘導は、宿主の感染抵抗性や炎症病態に影響を与えることが想定される。そこで本研究では、GSDM分子を成熟化させる細菌/真菌由来プロテアーゼを探索し、それらによって誘導されるパイロトーシスが感染病態に与える影響を明らかにする。

Outline of Final Research Achievements

Pyroptosis is a form of programmed cell death associated with host defense and inflammation, initiated by the cleavage and activation of gasdermin (GSDM) family proteins. This study aimed to explore whether bacterial and fungal proteases can modulate pyroptosis by cleaving GSDMs. We established a simplified method for purifying GSDM proteins and screened microbial proteases for their cleavage activity. We identified a Pseudomonas aeruginosa proteases, AprA, that cleave human GSDMD and induce GSDMD-dependent necrotic cell death. Additionally, Aeromonas serine protease (ASP) cleaved human and mouse GSDMD at multiple sites, suggesting dual roles in activating or inactivating pyroptosis. These findings elucidate novel host-pathogen interactions and provide insights into how microbial enzymes modulate inflammatory cell death during infection.

Academic Significance and Societal Importance of the Research Achievements

本研究は、病原微生物が産生するプロテアーゼが宿主GSDM分子を切断することでパイロトーシスを制御し、感染病態に影響を及ぼす可能性を初めて実証した。これにより、感染時における宿主-病原体相互作用の新たな分子機構が明らかになり、病原体の免疫回避戦略や過剰炎症の制御メカニズムの理解が進展する。将来的には、GSDM切断を標的とした新たな感染症治療法や炎症制御戦略の開発への応用が期待される。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (9 results)

All 2024 2023 2022

All Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Differences in Biofilm Formation by Methicillin-Resistant and Methicillin-Susceptible Staphylococcus aureus Strains2023

    • Author(s)
      Hernandez-Cuellar Eduardo、Tsuchiya Kohsuke、Valle-Rios Ricardo、Medina-Contreras Oscar
    • Journal Title

      Diseases

      Volume: 11 Issue: 4 Pages: 160-160

    • DOI

      10.3390/diseases11040160

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Potential biomarker proteins for aspiration pneumonia detected by shotgun proteomics using buccal mucosa samples: a cross-sectional case?control study2023

    • Author(s)
      Ogura Kohei、Endo Maho、Hase Takashi、Negami Hitomi、Tsuchiya Kohsuke、Nishiuchi Takumi、Suzuki Takeshi、Ogai Kazuhiro、Sanada Hiromi、Okamoto Shigefumi、Sugama Junko
    • Journal Title

      Clinical Proteomics

      Volume: 20 Issue: 1 Pages: 9-9

    • DOI

      10.1186/s12014-023-09398-w

    • Related Report
      2023 Research-status Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The transcription factor ATF3 switches cell death from apoptosis to necroptosis in hepatic steatosis in male mice2023

    • Author(s)
      Inaba Yuka、Hashiuchi Emi、Watanabe Hitoshi、Kimura Kumi、Oshima Yu、Tsuchiya Kohsuke et al.
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1 Pages: 167-167

    • DOI

      10.1038/s41467-023-35804-w

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] カスパーゼ-12による細菌由来PAMPsの認識と機序解析2024

    • Author(s)
      土屋晃介, 細島祥子, Eduardo Hernandez Cuellar, 須田貴司
    • Organizer
      第35回日本生体防御学会学術総会
    • Related Report
      2024 Annual Research Report
  • [Presentation] Caspase-12 is an innate immune sensor for bacteria-associated molecular patterns2024

    • Author(s)
      土屋晃介, 須田貴司
    • Organizer
      第53回日本免疫学会学術集会
    • Related Report
      2024 Annual Research Report
  • [Presentation] A novel pyroptosis-inducing protease that senses bacteria-derived molecular patterns.2023

    • Author(s)
      Kohsuke Tsuchiya, Shoko Hosojima, and Takashi Suda.
    • Organizer
      The 3rd Japan and Australia Meeting on Cell Death 2023.
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] 溶解性細胞死パイロトーシスの分子機序と感染における役割2023

    • Author(s)
      土屋晃介
    • Organizer
      第35回微生物シンポジウム
    • Related Report
      2023 Research-status Report
    • Invited
  • [Presentation] カスパーゼ-12は細菌リポペプチドを認識してパイロトーシスを誘導する2023

    • Author(s)
      土屋晃介, 細島祥子, Eduardo Hernandez Cuellar, 須田貴司
    • Organizer
      第33回日本生体防御学会学術総会
    • Related Report
      2023 Research-status Report
  • [Presentation] パイロトーシスを誘導する新規カスパーゼの同定と活性化機序の解明2022

    • Author(s)
      土屋晃介, 細島祥子, 須田貴司
    • Organizer
      第33回日本生体防御学会学術総会
    • Related Report
      2022 Research-status Report

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Published: 2022-07-05   Modified: 2026-01-16  

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