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Cyclophilin D is a novel therapeutic target in ANCA vasculitis

Research Project

Project/Area Number 20K08581
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53040:Nephrology-related
Research InstitutionHokkaido University

Principal Investigator

Nakazawa Daigo  北海道大学, 大学病院, 助教 (60724135)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords腎炎 / ANCA関連血管炎 / 好中球 / 血管炎 / ANCA / 糸球体腎炎 / シクロフィリンD / プログラム細胞死 / ネクローシス / NETs
Outline of Research at the Start

ANCA関連血管炎は,ANCAにより活性化された好中球が細胞障害性のNETsとなり,壊死性血管炎を引き起こす.我々は本疾患とNETsの関連性を報告してきたが,NETsは分子によりプログラムされた細胞死で, 感染症時には免疫防御として機能する一方, 無菌性炎症病態で自己を損傷する負の側面がある. ANCA誘導NETsに関わる分子を解析し, Cyclophilin D(CypD)が重要な分子であることを発見した. CypDはミトコンドリアからシトクロムCを放出し細胞死を誘導するが, 本研究では, 血管炎モデル動物におけるCypDの関与を検証し, 新規治療開発を目指す

Outline of Final Research Achievements

Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is an autoimmune disease characterized by necrotizing vasculitis. Dysregulated neutrophil extracellular traps (NETs) contribute to the development of necrosis in AAV, however, the specific therapy based on NETs physiology remains to be established. The authors discovered the therapeutic target molecule, Cyclophilin D (CypD), by analyzing the transcriptome profiling of ANCA-induced NETs using RNA sequencing. Animal studies revealed that genetic deficiency of CypD in murine AAV models ameliorated vascular necrosis via the regulation of NETs and endothelial injury. These findings suggest that the CypD might become a novel and specific therapeutic target of vascular necrosis in autoimmune vasculitis.

Academic Significance and Societal Importance of the Research Achievements

抗好中球細胞質抗体 (ANCA) 関連血管炎は、外来微生物の侵入を阻止する好中球を異常に活性化する自己抗体であるANCAが何らかの機序で作られます。そのANCAにより活性化された好中球が体中の毛細血管で暴走し、腎臓や肺の毛細血管に壊死を引き起こして急激な腎不全や肺出血をきたす難病の一つです。治療は強力な免疫抑制薬が必要ですが、免疫力を低下させることで感染症による副作用が多いことが課題であり、本研究では免疫を抑制せずに好中球の暴走を阻止する治療の開発を目的としてCyclophilinDという標的を見つけ、治療効果を動物モデルで検証しました。今後は患者さんへの応用が期待されます。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (2 results)

All 2022 2021

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

  • [Journal Article] Regulation of NETosis and Inflammation by Cyclophilin D in Myeloperoxidase‐Positive Antineutrophil Cytoplasmic Antibody?Associated Vasculitis2022

    • Author(s)
      Kudo Takashi、Nakazawa Daigo、Watanabe‐Kusunoki Kanako、Kanda Masatoshi、Shiratori‐Aso Satoka、Abe Nobuya、Nishio Saori、Koga Jun‐ichiro、Iwasaki Sari、Tsuji Takahiro、Fukasawa Yuichiro、Yamasaki Miwako、Watanabe Masahiko、Masuda Sakiko、Tomaru Utano、Murakami Masaaki、Aratani Yasuaki、Ishizu Akihiro、Atsumi Tatsuya
    • Journal Title

      Arthritis & Rheumatology

      Volume: 75 Issue: 1 Pages: 71-83

    • DOI

      10.1002/art.42314

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] CYPD DEFICIENCY AMELIORATES AUTOIMMUNE VASCULITIS IN MOUSE MODEL VIA THE INHIBITION OF PROGRAMMED NECROSIS2021

    • Author(s)
      Takashi Kudo, Daigo Nakazawa
    • Organizer
      57th ERA-EDTA Congress
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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