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A novel immune monitoring method for evaluating humoral immune activation against transplanted grafts

Research Project

Project/Area Number 17K11200
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Urology
Research InstitutionOsaka University

Principal Investigator

Matsuda Yoshiko  大阪大学, 医学系研究科, 特任研究員 (90790303)

Co-Investigator(Kenkyū-buntansha) 今村 亮一  大阪大学, 医学系研究科, 准教授 (40456976)
高原 史郎  大阪大学, 医学系研究科, 招へい教授 (70179547)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords抗体関連型拒絶反応 / B細胞biology / 個別化免疫抑制療法 / IgM型メモリーB細胞 / IgG型メモリ-B細胞 / In vitro末梢血単核球アッセイ / 抗ドナーHLA抗体 / In vitro末梢血単核球アッセイ系 / IgMメモリーB細胞 / IgGメモリ-B細胞 / イムノグロブリン クラススイッチ / バイオマーカ- / 薬剤感受性試験 / インビトロアッセイ / IgG型メモリ–B細胞 / エベロリムス / メモリーB細胞 / In vitro アッセイ系 / IgM型ドナー特異的HLA抗体 / IgG型ドナー特異的HLA抗体 / ドナー特異的IgM型メモリーB細胞 / ドナー特異的IgG型メモリーB細胞 / 腎臓移植 / In vitro B cell assay / Donor specific antibody / HLA
Outline of Final Research Achievements

Early diagnosis of antibody-mediated rejection after renal transplantation is required for prompt therapeutic intervention. We investigated the clinical significance of IgM-type donor-specific HLA antibody (DSA) memory B-cell differentiation. Monitoring of growth and survival of both IgG- and IgM-type-DSA-specific memory B cells facilitated early detection of the development of antibody-mediated rejection and
evaluation of humoral immune response against donor-specific HLA antigens in detail.
Additionally, drug sensitivity testing of in vitro IgG and IgM memory B cell growth and survival was used to evaluate novel immunosuppressive therapy to prevent the development of antibody-mediated rejection after renal transplantation.

Academic Significance and Societal Importance of the Research Achievements

移植予後改善には免疫抑制療法の個別化投与導入、抗体関連型拒絶反応の制御などが解決すべき課題である。本研究においてはdonor-specific HLA antibody 特異的IgG/IgMメモリ-B細胞を共に評価することで抗体関連型拒絶反応発症を早期に検知し、治療介入が可能となること、in vitro IgG/IgMメモリ-B細胞生存分化系を利用した薬剤感受性試験法の確立により、ドナ- HLA抗原に対する液生免疫反応を標的とした適正化免疫抑制療法の導入につながる可能性が示唆された。本研究の成果は移植臓器生着率と患者QOLの改善につながり、透析再導入数の減少など医療経済への貢献も期待される。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (9 results)

All 2019 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Patent(Industrial Property Rights) (1 results) (of which Overseas: 1 results)

  • [Journal Article] Evaluation of Antigen-Specific IgM and IgG Production during an In Vitro Peripheral Blood Mononuclear Cell Culture Assay2017

    • Author(s)
      Matsuda Yoshiko、Imamura Ryoichi、Takahara Shiro
    • Journal Title

      Frontiers in Immunology

      Volume: 8 Pages: 794-794

    • DOI

      10.3389/fimmu.2017.00794

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Effect of Everolimus on IgM/IgG memory B cell growth and survival in vitro and applications for effective administration in clinical practice2019

    • Author(s)
      Yoshiko Matsuda
    • Organizer
      American Transplant Congress
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] IgM/IgG型ドナー特異的HLA抗体産生予防を目的とした免疫抑制療法個別化投与法の確立2018

    • Author(s)
      松田 佳子
    • Organizer
      日本移植学会
    • Related Report
      2018 Research-status Report
  • [Presentation] 腎移植におけるクロスマッチ検査の最新知見 ―膜型抗体の段階での検知法と治療への応用―2018

    • Author(s)
      今村亮一
    • Organizer
      第 16 回日本組織適合性学会近畿地方会
    • Related Report
      2018 Research-status Report
  • [Presentation] In vitro IgM/IgG メモリー B細胞分化増殖系における免疫抑制剤感受性試験2018

    • Author(s)
      松田 佳子
    • Organizer
      日本腎臓学会
    • Related Report
      2018 Research-status Report 2017 Research-status Report
  • [Presentation] Evaluation of drug action on IgM memory B cell survival and growth in vitro; -Application for individualized immunosuppression after kidney transplants-2018

    • Author(s)
      Yoshiko Matsuda
    • Organizer
      American transplant congress
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Application for individualized immunosuppression after kidney transplants2018

    • Author(s)
      Yoshiko Matsuda
    • Organizer
      American Transplant Congress
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] インビトロ末梢血単核球を用いた抗原特異的IgG/IgMメモリ-B細胞機能評価法の確立と臨床応用2017

    • Author(s)
      松田 佳子
    • Organizer
      日本移植学会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Patent(Industrial Property Rights)] インビトロでのIgM型メモリーB細胞分化培養系を用いた臓器移植後抗体関連型拒絶反応の早期診断法2017

    • Inventor(s)
      松田 佳子,高原 史郎
    • Industrial Property Rights Holder
      国立大学法人大阪大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2017
    • Related Report
      2017 Research-status Report
    • Overseas

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Published: 2017-04-28   Modified: 2021-02-19  

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