• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Molecular mechanisms of inhibitory regulation of NLRP3 inflammasome by reactive sulfur species

Research Project

Project/Area Number 21H02071
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 37020:Chemistry and chemical methodology of biomolecules-related
Research InstitutionKumamoto University

Principal Investigator

Sawa Tomohiro  熊本大学, 大学院生命科学研究部(医), 教授 (30284756)

Co-Investigator(Kenkyū-buntansha) 津々木 博康  熊本大学, 大学院生命科学研究部(医), 講師 (40586608)
小野 勝彦  熊本大学, 大学院生命科学研究部(医), 助教 (80573592)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2023: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2022: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2021: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Keywordsインフラマソーム / 活性イオウ / システインパースルフィド / 炎症 / イオウ代謝 / NLRP3インフラマソーム / 超硫黄分子 / レドックス / 自然炎症
Outline of Research at the Start

インフラマソームは体内に侵入した病原体や異物、非特異的な組織損傷を感知し、それらを炎症応答を介して排除するための重要な適応応答を担っている。インフラマソームの内因性抑制因子は、過剰な炎症を抑え、また炎症の収束に必要である。本研究では、新規な内因性抑制因子として本応募者らが予備検討から同定した活性イオウについて、インフラマソーム活性化に対する抑制作用の分子メカニズムを明らかにすることを目的としている。本研究の成果は、インフラマソームの制御破綻が関わる自己炎症性疾患に対して、活性イオウを基軸とした新しい診断・予防・治療法の開発に向けた基盤技術の構築に資するものと期待される。

Outline of Final Research Achievements

Inflammasomes are protein complexes that recognize the leakage or release of intracellular molecules (such as ATP) as a danger signal when pathogens invade or when cell damage occurs due to some other cause. In this study, we revealed that endogenous molecules called reactive sulfur species have a strong inhibitory effect on inflammatory responses, including the NLRP3 inflammasome. Experimental systems using mice revealed that when the production system of reactive sulfur species is suppressed, inflammation becomes excessive and persists. On the other hand, we found that reactive sulfur donors have excellent therapeutic effects against inflammatory responses accompanied by inflammasome activation. In the future, we hope to develop new drugs based on reactive sulfur species.

Academic Significance and Societal Importance of the Research Achievements

インフラマソームの活性化は、炎症応答の誘導を通じて、生体にとっての異物(病原体や死細胞成分)の除去に必須の働きをしている。一方、インフラマソームの過剰な活性化は炎症性疾患の進展に関わると考えられている。本研究ではインフラマソームの新しい活性調節機構の一端を明らかにした。この成果は、インフラマソームの制御異常への活性イオウの関わりを指標とするリスク因子の予測や、活性イオウの産生増加を標的とする新しい治療法構築へ寄与することが期待される。

Report

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

    (18 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (10 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 10 results,  Open Access: 10 results) Presentation (7 results) (of which Int'l Joint Research: 4 results,  Invited: 4 results)

  • [Int'l Joint Research] Brown University(米国)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Thioglucose-derived tetrasulfide, a unique polysulfide model compound2024

    • Author(s)
      Lindahl Stephen、Shieh Meg、Zhang Tianli、Guo Chunyu、Robinson Jerome R.、Sawa Tomohiro、Xian Ming
    • Journal Title

      Redox Biology

      Volume: 70 Pages: 103045-103045

    • DOI

      10.1016/j.redox.2024.103045

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Regulation of innate immune and inflammatory responses by supersulfides2024

    • Author(s)
      Tsutsuki Hiroyasu、Zhang Tianli、Akaike Takaaki、Sawa Tomohiro
    • Journal Title

      International Immunology

      Volume: 36 Issue: 4 Pages: 143-154

    • DOI

      10.1093/intimm/dxad057

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Acute Kidney Injury Caused by Rhabdomyolysis Is Ameliorated by Serum Albumin-Based Supersulfide Donors through Antioxidative Pathways2024

    • Author(s)
      Ikeda-Imafuku Mayumi、Fukuta Tatsuya、Tuan Giam Chuang Victor、Sawa Tomohiro、Maruyama Toru、Otagiri Masaki、Ishida Tatsuhiro、Ishima Yu
    • Journal Title

      Pharmaceuticals

      Volume: 17 Issue: 1 Pages: 128-128

    • DOI

      10.3390/ph17010128

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Supersulfide biology and translational medicine for disease control2023

    • Author(s)
      Barayeu Uladzimir、Sawa Tomohiro、Nishida Motohiro、Wei Fan-Yan、Motohashi Hozumi、Akaike Takaaki
    • Journal Title

      British Journal of Pharmacology

      Volume: - Pages: 1-11

    • DOI

      10.1111/bph.16271

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Alkyl gallates inhibit serine O-acetyltransferase in bacteria and enhance susceptibility of drug-resistant Gram-negative bacteria to antibiotics2023

    • Author(s)
      Toyomoto Touya、Ono Katsuhiko、Shiba Tomoo、Momitani Kenta、Zhang Tianli、Tsutsuki Hiroyasu、Ishikawa Takeshi、Hoso Kanae、Hamada Koma、Rahman Azizur、Wen Liping、Maeda Yosuke、Yamamoto Keiichi、Matsuoka Masao、Hanaoka Kenjiro、Niidome Takuro、Akaike Takaaki、Sawa Tomohiro
    • Journal Title

      Frontiers in Microbiology

      Volume: 14 Pages: 1276447-1276447

    • DOI

      10.3389/fmicb.2023.1276447

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sulfur metabolic response in macrophage limits excessive inflammatory response by creating a negative feedback loop.2023

    • Author(s)
      Takeda H, Murakami S, Liu Z, Sawa T, Takahashi M, Izumi Y, Bamba T, Sato H, Akaike T, Sekine H, Motohashi H*.
    • Journal Title

      Redox Biology

      Volume: 65 Pages: 102834-102834

    • DOI

      10.1016/j.redox.2023.102834

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cystathionine γ-lyase self-inactivates by polysulfidation during cystine metabolism2023

    • Author(s)
      Araki Shoma、Takata Tsuyoshi、Ono Katsuhiko、Sawa Tomohiro、Kasamatsu Shingo、Ihara Hideshi、Kumagai Yoshito、Akaike Takaaki、Watanabe Yasuo、Tsuchiya Yukihiro
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 24 Issue: 12 Pages: 9982-9982

    • DOI

      10.3390/ijms24129982

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Non-canonical inflammasome activation analysis in a mouse model of Citrobacter rodentium infection2022

    • Author(s)
      Tsutsuki Hiroyasu、Zhang Tianli、Yahiro Kinnosuke、Toyomoto Touya、Sawa Tomohiro
    • Journal Title

      STAR Protocols

      Volume: 3 Issue: 4 Pages: 101741-101741

    • DOI

      10.1016/j.xpro.2022.101741

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] New insights into the regulatory roles of glutathione in NLRP3-inflammasome-mediated immune and inflammatory responses2022

    • Author(s)
      Zhang Tianli、Tsutsuki Hiroyasu、Li Xiaoyan、Sawa Tomohiro
    • Journal Title

      The Journal of Biochemistry

      Volume: 171 Issue: 4 Pages: 367-377

    • DOI

      10.1093/jb/mvab158

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Chemical biology of reactive sulfur species: Hydrolysis-driven equilibrium of polysulfides as a determinant of physiological functions.2022

    • Author(s)
      Sawa Tomohiro, Takata Tsuyoshi, Matsunaga Tetsuro, Ihara Hideshi, Motohashi Hozumi, Akaike Takaaki.
    • Journal Title

      Antioxidants & Redox Signaling

      Volume: 36 Issue: 4-6 Pages: 327-336

    • DOI

      10.1089/ars.2021.0170

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 超硫黄分子による炎症応答制御2023

    • Author(s)
      澤 智裕
    • Organizer
      第76回日本酸化ストレス学会学術集会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 超硫黄分子による炎症応答制御2023

    • Author(s)
      澤 智裕
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Protein S-sulfhydration based regulation of NLRP3 inflammasome2022

    • Author(s)
      Tianli Zhang, Hiroyasu Tsutsuki, Motohiro Nishida, Takaaki Akaike, Tomohiro Sawa
    • Organizer
      Gordon Research Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Regulation of innate immune responses by supersulfides2022

    • Author(s)
      Tomohiro Sawa
    • Organizer
      The 15th Korea-Japan International Symposium on Microbiology
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Regulation of innate immune responses by reactive sulfur species2022

    • Author(s)
      Tomohiro Sawa
    • Organizer
      The 12th International Conference on the Biology, Chemistry and Therapeutic Applications of Nitric Oxide
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Regulation of innate immune responses by reactive sulfur species2022

    • Author(s)
      Tomohiro Sawa
    • Organizer
      10th Biennial Conference of the Society for Free Radical Research Asia
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 超硫黄分子による炎症抑制作用2021

    • Author(s)
      澤 智裕
    • Organizer
      第94回日本生化学会
    • Related Report
      2021 Annual Research Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi