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Molecular mechanism of calcinosis in systemic sclerosis

Research Project

Project/Area Number 19K08921
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54020:Connective tissue disease and allergy-related
Research InstitutionNippon Medical School

Principal Investigator

Shirai Yuichiro  日本医科大学, 医学部, 講師 (70528801)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords強皮症 / 石灰沈着症 / 骨芽細胞
Outline of Research at the Start

SScの軟部組織中で沈着している成分がハイドロキシアパタイトであるかといった基本についてリン酸カルシウムの染色で検証する。また、その産生細胞である骨芽細胞が患者病変部に実際に存在するかについて、免疫染色と網羅的遺伝子発現で骨芽細胞マーカーの解析を行う。次に、骨芽細胞は軟部組織には本来存在しないため、間葉系細胞からの分化および細胞動員が想定される。この細胞源が循環血液中細胞や局所(関節・腱鞘滑膜)など、どこから供給されるかをSSc患者の末梢血検体および、マウス由来の関節・腱組織を用いて検証する。

Outline of Final Research Achievements

We investigated the mechanism of subcutaneous calcification seen in scleroderma patients. First, it was confirmed by staining that the calcified component was hydroxyapatite. In pathology, mononuclear cells gathered around the deposited lesion and the osteoblast marker ALP was positive. When the calcified tissue was cultured, CD90 and osteocalcin-positive cells proliferated. The tissue also continued to increase spontaneously, and ALP-positive cells were scattered in it. Therefore, a mechanism was assumed in which the mesenchymal cells in the tissue differentiated into osteoblasts and ectopically produced the calcification component. Therefore, it was shown that when a well-used therapeutic agent was added to a culture system that differentiates mesenchymal stem cells into osteoblasts, calcification deposition and extracellular matrix-related gene expression were suppressed.

Academic Significance and Societal Importance of the Research Achievements

強皮症の皮下石灰沈着症は、組織中の間葉系の細胞が骨芽細胞に分化して異所性に石灰成分を産生し、病態を形成する機序であることが示唆された。これは、血管石灰化など他の異所性石灰沈着症と共通した分子機序を有し、本研究の成果は間葉系幹細胞分野の進歩の一助になりうる。また、既存の薬物治療の効果は乏しく、アンメットニーズとなっている。本研究で分子標的を明らかにすることで、有効性の高い治療薬の開発が期待できる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (9 results)

All 2022 2021 2020

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 4 results) Book (1 results)

  • [Journal Article] Use of vonoprazan, a novel potassium-competitive acid blocker, for the treatment of proton pump inhibitor-refractory reflux esophagitis in patients with systemic sclerosis2022

    • Author(s)
      Shirai Y, Kawami N, Iwakiri K, Kuwana M
    • Journal Title

      J Scleroderma Relat Disord

      Volume: 7 Issue: 1 Pages: 57-61

    • DOI

      10.1177/23971983211021747

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Clinical worsening following discontinuation of tocilizumab in diffuse cutaneous systemic sclerosis: a single-centre experience in Japan2022

    • Author(s)
      Isomura Y, Shirai Y, Kuwana M
    • Journal Title

      Rheumatology (Oxford)

      Volume: - Issue: 11 Pages: 4491-4496

    • DOI

      10.1093/rheumatology/keac136

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Clinical relevance of the serial measurement of Krebs von den Lungen-6 levels in patients with systemic sclerosis-associated interstitial lung disease2021

    • Author(s)
      Shirai Y, Fukue R, Kaneko Y, Kuwana M
    • Journal Title

      Diagnostics

      Volume: 11 Issue: 11 Pages: 2007-2007

    • DOI

      10.3390/diagnostics11112007

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] CLINICAL WORSENING FOLLOWING TAPERING OR WITHDRAWAL OF TOCILIZUMAB IN PATIENTS WITH DIFFUSE CUTANEOUS SYSTEMIC SCLEROSIS: A REAL-WORLD EXPERIENCE2022

    • Author(s)
      Isomura Y, Shirai Y, Kuwana M
    • Organizer
      7th Systemic Sclerosis World Congress
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 全身性強皮症(SSc)に伴う間質性肺疾患(ILD)の進行予測に血清KL-6の経時的変化は有用でない2021

    • Author(s)
      白井 悠一郎, 福栄 亮介, 山崎 宜興, 竹内 勤, 桑名 正隆
    • Organizer
      第65回日本リウマチ学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] EFFECTIVENESS AND SAFETY OF TOCILIZUMAB IN PATIENTS WITH SYSTEMIC SCLEROSIS: A PROPENSITY SCORE CONTROL MATCHED OBSERVATIONAL STUDY OF THE EUSTAR COHORT.2021

    • Author(s)
      Kuster S, Jordan S, Elhai MD, …Shirai Y, …. Distler O on behalf of EUSTAR
    • Organizer
      Annual European Congress of Rheumatology 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] OUTCOMES OF DOSE-REDUCTION OR DISCONTINUATION OF TOCILIZUMAB IN PATIENTS WITH EARLY DIFFUSE CUTANEOUS SYSTEMIC SCLEROSIS.2021

    • Author(s)
      Isomura Y, Yamasaki Y, Shirai Y, Kuwana M
    • Organizer
      Annual European Congress of Rheumatology 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Clinical characteristics in patients with systemic sclerosis and symptomatic subcutaneous calcinosis2020

    • Author(s)
      Yuichiro Shirai, Masataka Kuwana
    • Organizer
      Systemic Sclerosis World Congress
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Book] リウマチ病学テキスト2022

    • Author(s)
      一般社団法人 日本リウマチ学会 生涯教育委員会(分担執筆 白井悠一郎)
    • Total Pages
      608
    • Publisher
      南江堂
    • ISBN
      9784524231584
    • Related Report
      2021 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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