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

Development of mouse model of chronic lung allograft dysfunction to evaluate immune regulation

Research Project

Project/Area Number 22K19558
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 55:Surgery of the organs maintaining homeostasis and related fields
Research InstitutionKyoto University

Principal Investigator

Tanaka Satona  京都大学, 医学研究科, 助教 (80847517)

Co-Investigator(Kenkyū-buntansha) 伊達 洋至  京都大学, 医学研究科, 教授 (60252962)
山田 義人  京都大学, 医学研究科, 特定病院助教 (80375691)
Project Period (FY) 2022-06-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2023: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords肺移植 / 慢性期移植肺機能不全 / 細胞性拒絶 / 線維化 / 二次リンパ組織 / 急性細胞性拒絶 / 慢性拒絶 / 三次リンパ組織 / 拒絶反応
Outline of Research at the Start

肺移植は末期呼吸不全患者に対する唯一の救命手段だが、他の臓器移植に比べて長期予後は明らかに不良である。最も大きな要因が、慢性拒絶による「慢性期移植肺機能不全(chronic lung allograft dysfunction: CLAD)」である。ステロイド・カルシニューリン阻害剤などの現在の免疫抑制剤に代わる新たな移植後維持療法の確立が望まれている。本研究の概要は、臨床状況を反映するマウス肺移植CLADモデルを開発し、そのモデルを用いて、拒絶反応を反映する移植肺内のリンパ球集簇や移植肺の線維化に至る過程やメカニズムを解明し、新たなCLADの予防治療法を検討することである。

Outline of Final Research Achievements

We developed a murine model of chronic lung allograft dysfunction (CLAD) and transplanted left lungs from BALB/c donors into B6 recipients that were treated with intermittent cyclosporine and methylprednisolone postoperatively. In this model, the lung allograft developed acute cellular rejection on day 15 which, by day 30 after transplantation, progressed to severe pleural and peribronchovascular fibrosis with lymphocyte infiltration. This model reflects restrictive type of CLAD. Using secondary lymphoid organ - deficient mice as recipients, we found that secondary lymphoid organs were necessary for progression from acute cellular rejection to allograft fibrosis. sICAM-1 elevation in bronchoalveolar lavage fluid was characteristics in this model. We uncovered a critical role for recipient secondary lymphoid organs in the development of CLAD and identified a possible predictive marker for CLAD.

Academic Significance and Societal Importance of the Research Achievements

肺移植臨床で経験する線維化主体の慢性期移植肺機能不全(RAS: restrictive allograft dysfunction)を反映するマウス肺移植モデルを開発し、細胞性拒絶から線維化への進行メカニズムの一端を明らかにした。さらに、慢性期移植肺機能不全発症を予測するマーカーの候補を同定した。本研究成果は、肺移植後の長期予後改善を妨げ、いまだ有効な治療がない慢性期移植肺機能不全に対する発症予測と新たな治療ターゲットの開発に貢献しうる。

Report

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

    (3 results)

All 2024 2023 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results)

  • [Int'l Joint Research] Washington University in St. Louis(米国)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Fibrotic progression from acute cellular rejection is dependent on secondary lymphoid organs in a mouse model of chronic lung allograft dysfunction2024

    • Author(s)
      Mineura Katsutaka、Tanaka Satona、Goda Yasufumi、Terada Yuriko、Yoshizawa Akihiko、Umemura Keisuke、Sato Atsuyasu、Yamada Yoshito、Yutaka Yojiro、Ohsumi Akihiro、Nakajima Daisuke、Hamaji Masatsugu、Mennju Toshi、Kreisel Daniel、Date Hiroshi
    • Journal Title

      American Journal of Transplantation

      Volume: Online Issue: 6 Pages: 944-953

    • DOI

      10.1016/j.ajt.2024.02.020

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Impact of perioperative airway pathogens on living-donor lobar lung transplantation outcomes2023

    • Author(s)
      Oda Hiromi、Tanaka Satona、Chen-Yoshikawa Toyofumi F.、Morimura Yuki、Yamada Yoshito、Yutaka Yojiro、Nakajima Daisuke、Hamaji Masatsugu、Ohsumi Akihiro、Menju Toshi、Nagao Miki、Date Hiroshi
    • Journal Title

      Surgery Today

      Volume: 54 Issue: 3 Pages: 266-274

    • DOI

      10.1007/s00595-023-02730-9

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed

URL: 

Published: 2022-07-05   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi