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Pathogenesis of idiopathic multicentric Castleman's disease focusing on T Cells

Research Project

Project/Area Number 20K17444
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 54020:Connective tissue disease and allergy-related
Research InstitutionNagasaki University

Principal Investigator

Sumiyoshi Remi  長崎大学, 病院(医学系), 助教 (70859363)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords特発性多中心性キャッスルマン病 / iMCD-NOS / iMCD-TAFRO / mTOR / IGFBP-1 / キャッスルマン病 / Th1 / Th17 / IL-6 / T細胞
Outline of Research at the Start

特発性多中心性キャッスルマン病(idiopathic multicentric Castleman disease: iMCD)は、リンパ増殖性疾患である。第一選択薬はIL-6阻害薬であるが、効果不十分例が一定数存在し、第二選択薬のエビデンスは乏しく確立された治療方針はない。また診断に関しても明確な基準はなく、特異的なバイオマーカーも存在しない。これまでの報告では、iMCDのリンパ節組織においてT細胞が重要な役割を担っていることが示唆されている。本研究では、T細胞に着目したiMCDの病態解明研究を行い、早期診断や精密医療に向けたバイオマーカーの開発を行い、新規治療法の発展の足がかりとする。

Outline of Final Research Achievements

Idiopathic multicentric Castleman's disease (iMCD) is a lymphoproliferative disorder characterized by systemic inflammation. We focused on the molecular differences between iMCD-TAFRO, a more severe form of idiopathic multicentric Castleman's disease (iMCD) with TAFRO signs, and iMCD-NOS, another form of iMCD. RNA sequencing using peripheral blood CD4-positive T cells showed that iMCD-TAFRO patients had enhanced mTOR-related signaling compared to iMCD-NOS. IGFBP-1, a serum protein suggested to be associated with the pathogenesis of iMCD, was also examined by ELISA. Serum IGFBP-1 levels were significantly higher in iMCD-TAFRO than in iMCD-NOS. Serum IGFBP-1 is a protein that has been showed to be associated with the mTOR pathway. In this study, the mTOR pathway was shown to be more activated in iMCD-TAFRO compared to iMCD-NOS, which may contribute to differences in pathogenesis and clinical manifestations.

Academic Significance and Societal Importance of the Research Achievements

特発性多中心性キャッスルマン病(iMCD)は臨床病型(iMCD-TAFROとiMCD-NOS)によって臨床経過、重症度、治療反応性が異なっており、多様性に富む疾患群である。患者末梢血のCD4陽性T細胞のRNAシーケンスではiMCD-TAFROはiMCD-NOSよりもmTOR関連経路が亢進しており、それと関連する蛋白である血清IGFBP-1も有意に高値であった。これらの違いが病態の違いと関連している可能性があり、臨床病型の差異として現れていることが示唆された。この結果が今後のiMCDの臨床病型毎の治療戦略に役立つことが期待される。

Report

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

    (5 results)

All 2022 2021 2020

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] A case of tocilizumab-refractory idiopathic multicentric Castleman's disease successfully treated with sirolimus2021

    • Author(s)
      Sumiyoshi Remi、Koga Tomohiro、Furukawa Kaori、Umeda Masataka、Yamamoto Kazuko、Mori Ryoichi、Kawakami Atsushi
    • Journal Title

      Clinical Immunology

      Volume: 233 Pages: 108887-108887

    • DOI

      10.1016/j.clim.2021.108887

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Identification of pathways that discriminate between TAFRO type and NOS type in idiopathic multicentric Castleman's disease2022

    • Author(s)
      Remi Sumiyoshi
    • Organizer
      The 66th Annual General Asssembly and Scientific Meeting of the Japan College of Rheumatology
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Serum proteomics reveals insulin-like growth factor binding proteins-1 as biomarkers for idiopathic multicentric Castleman's disease2021

    • Author(s)
      Remi Sumiyoshi
    • Organizer
      EULAR 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 特発性多中心性キャッスルマン病における血清バイオマーカーの解析2021

    • Author(s)
      住吉玲美
    • Organizer
      第65回 日本リウマチ学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 特発性多中心性キャッスルマン病/TAFRO症候群患者を対象とした末梢血T細胞サブセットの解析2020

    • Author(s)
      住吉玲美
    • Organizer
      第64回日本リウマチ学会
    • Related Report
      2020 Research-status Report

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

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