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Role of AIM2 inflammasome in atherosclerosis and its related diseases

Research Project

Project/Area Number 22K20864
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0902:General internal medicine and related fields
Research InstitutionJichi Medical University

Principal Investigator

Chintogtokh Baatarjav  自治医科大学, 医学部, ポスト・ドクター (70962744)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsDNAセンサー / 炎症反応 / 心血管病
Outline of Research at the Start

NLRP3インフラマソームは、動脈硬化を基盤とする心血管病での無菌性炎症の惹起に重要な役割を果たしている。申請者は、dsDNAにより形成されるAIM2インフラマソームも無菌性炎症に関与することを報告するとともに、動脈硬化病変のデータベース解析により病態ステージによってNLRP3とAIM2の役割が異なるとの仮説に至った。本研究では、動脈硬化や心血管病におけるAIM2の役割や病変ステージでのNLRP3との相違を解析し、これら疾患における無菌性炎症の病態解明を目指して研究を行う。

Outline of Final Research Achievements

The NLRP3 inflammasome contributes to sterile inflammatory responses in the pathogenesis of atherosclerosis-related cardiovascular disease. Recent investigations have suggested that a dsDNA sensor AIM2 could mediate sterile inflammation; however, the role of AIM2 inflammasome in cardiovascular disease remains unclear. We generated ApoE-knockout (-KO) mice lacking AIM2 and observed that AIM2 deficiency had no significant effect on the lesion size of atherosclerosis. On the other hand, we showed that AIM2 deficiency significantly attenuated the incidence and severity of CAWS-induced vasculitis. In vitro experiments showed that CAWS induced DNA leakage from the nucleus into the cytoplasm, leading to activation of AIM2 inflammasome in bone marrow-derived dendritic cells. These findings suggest that AIM2 inflammasome contributes to the development of CAWS-induced vasculitis, and provide new insights into the mechanism underlying the pathogenesis of Kawasaki disease-like vasculitis.

Academic Significance and Societal Importance of the Research Achievements

無菌性炎症におけるAIM2インフラマソームの活性化機構や病態への関与については、未だ不明な点も多く、これを標的とした臨床応用についても様々な課題が残されている。本研究の成果により、AIM2インフラマソーム活性化の新たな分子機構が明らかになったことは、学術的に十分な意義がある。また、日本人に多い川崎病血管炎の病態についても未だ不明であることから、その血管炎惹起の分子機序の一部を明らかにすることができたことは、社会的な意義もあると考えられる。

Report

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

    (6 results)

All 2023 2022 Other

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

  • [Journal Article] Caspase-11 deficiency attenuates neutrophil recruitment into the atherosclerotic lesion in apolipoprotein E-deficient mice2023

    • Author(s)
      Karasawa Tadayoshi、Komada Takanori、Baatarjav Chintogtokh、Aizawa Emi、Mizushina Yoshiko、Fujimura Kenta、Gunji Yoshitaka、Komori Satoko、Aizawa Hidetoshi、Jing Tao Cantona Billton、Matsumura Takayoshi、Takahashi Masafumi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 686 Pages: 149158-149158

    • DOI

      10.1016/j.bbrc.2023.149158

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] NLRP3 inflammasome-driven IL-1β and IL-18 contribute to lipopolysaccharide-induced septic cardiomyopathy2023

    • Author(s)
      Fujimura Kenta、Karasawa Tadayoshi、Komada Takanori、Yamada Naoya、Mizushina Yoshiko、Baatarjav Chintogtokh、Matsumura Takayoshi、Otsu Kinya、Takeda Norihiko、Mizukami Hiroaki、Kario Kazuomi、Takahashi Masafumi
    • Journal Title

      Journal of Molecular and Cellular Cardiology

      Volume: 180 Pages: 58-68

    • DOI

      10.1016/j.yjmcc.2023.05.003

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] dsDNA-induced AIM2 pyroptosis halts aberrant inflammation during rhabdomyolysis-induced acute kidney injury2022

    • Author(s)
      Baatarjav Chintogtokh、Komada Takanori、Karasawa Tadayoshi、Yamada Naoya、Sampilvanjil Ariunaa、Matsumura Takayoshi、Takahashi Masafumi
    • Journal Title

      Cell Death & Differentiation

      Volume: 29 Issue: 12 Pages: 2487-2502

    • DOI

      10.1038/s41418-022-01033-9

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cryo-sensitive aggregation triggers NLRP3 inflammasome assembly in cryopyrin-associated periodic syndrome2022

    • Author(s)
      Karasawa Tadayoshi、Komada Takanori、Yamada Naoya、Aizawa Emi、Mizushina Yoshiko、Watanabe Sachiko、Baatarjav Chintogtokh、Matsumura Takayoshi、Takahashi Masafumi
    • Journal Title

      eLife

      Volume: 11 Pages: 1-26

    • DOI

      10.7554/elife.75166

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Double-stranded DNA-induced AIM2 pyroptosis limits excessive inflammation during rhabdomyolysis-induced acute kidney injury.2022

    • Author(s)
      Chintogtokh Baatarjav. Takanori Komada. Masafumi Takahashi
    • Organizer
      ASN(米国腎臓学会) Kidney Week 2022(国際学会)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Remarks] 自治医科大学 分子病態治療研究センター 炎症・免疫研究部

    • URL

      https://www.jichi.ac.jp/inflammation/

    • Related Report
      2023 Annual Research Report 2022 Research-status Report

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Published: 2022-09-01   Modified: 2025-01-30  

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