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Single cell integrated analysis of antigen specificity and gene expression for the cure of autoimmune diseases

Research Project

Project/Area Number 20K17430
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 InstitutionKeio University

Principal Investigator

Masaru Takeshita  慶應義塾大学, 医学部(信濃町), 助教 (10571135)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsシェーグレン症候群 / 関節リウマチ / 混合性結合組織病 / 抗原特異性 / 自己抗体 / 液性免疫 / シングルセル解析 / モノクローナル抗体 / 自己免疫疾患
Outline of Research at the Start

本研究では抗原特異性とシングルセル遺伝子発現解析を統合的に解析することで自己免疫病態を正確に捕捉し、根治療法につながる知見を得るため、課題を下記の5つの部分に分け、成果を得るべく研究を推進する。
1.病変組織サンプル処理方法の最適化 2.B細胞受容体の機能解析 3.T細胞受容体の機能解析 4.抗原特異性と遺伝子発現の統合解析 5.得られた結果の確認及び末梢血検体における応用

Outline of Final Research Achievements

In this study, we focused on B cells at the site of the lesion and examined the antigen specificity of the immune response occurring at the lesion site in vitro by purifying the BCRs as recombinant monoclonal antibodies. The B cells in salivary glands of Sjogren's syndrome, and lungs of rheumatoid arthritis, mixed connective tissue disease, and Sjogren's syndrome produced autoantibodies that matched the serum at a high rate, suggesting that an autoimmune reaction was ongoing at the lesion site. Disease lesion-derived monoclonal antibodies enabled the detail immunological analysis, such as the effect of affinity maturation in each antibody and spreading epitopes.

Academic Significance and Societal Importance of the Research Achievements

これまでの病変局所の解析により、病変部位で血清に対応した自己抗体が産生されている事、抗体の変異情報から抗体が抗原によりセレクションを受けている事、モノクローナル抗体とすることで血清ではわからなかった詳細な免疫実験が可能になる事、病変局所のシングルセル解析でクラスタリングによるセルサブセットの分類後に疾患と非疾患を比較することで疾患特異的な遺伝子変化、パスウェイ変化を検出できる事、このような手法が未知の自己抗体の同定に役立つ事など、多くの発見があった。本手法はこれまで解析した疾患以外にも広く応用ができ、病変局所の抗原特異性の解析手法として確立できたと考えている。

Report

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

    (10 results)

All 2022 2021 2020

All Journal Article (4 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (5 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Antigen-driven autoantibody production in lungs of interstitial lung disease with autoimmune disease2021

    • Author(s)
      Takeshita Masaru、Suzuki Katsuya、Nakazawa Maho、Kamata Hirofumi、Ishii Makoto、Oyamada Yoshitaka、Oshima Hisaji、Takeuchi Tsutomu
    • Journal Title

      Journal of Autoimmunity

      Volume: 121 Pages: 102661-102661

    • DOI

      10.1016/j.jaut.2021.102661

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Distinct Expression of Coinhibitory Molecules on Alveolar T Cells in Patients With Rheumatoid Arthritis Associated and Idiopathic Inflammatory Myopathy Associated Interstitial Lung Disease2021

    • Author(s)
      Nakazawa Maho、Suzuki Katsuya、Takeshita Masaru、Inamo Jun、Kamata Hirofumi、Ishii Makoto、Oyamada Yoshitaka、Oshima Hisaji、Takeuchi Tsutomu
    • Journal Title

      Arthritis & Rheumatology

      Volume: 73 Issue: 4 Pages: 576-586

    • DOI

      10.1002/art.41554

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anti-centromere antibodies target centromere kinetochore macrocomplex: a comprehensive autoantigen profiling2020

    • Author(s)
      Kajio Nobuhiko、Takeshita Masaru、Suzuki Katsuya、Kaneda Yukari、Yamane Humitsugu、Ikeura Kazuhiro、Sato Hidekazu、Kato Shin、Shimizu Hiroyuki、Tsunoda Kazuyuki、Takeuchi Tsutomu
    • Journal Title

      Annals of the Rheumatic Diseases

      Volume: 80 Issue: 5 Pages: 651-659

    • DOI

      10.1136/annrheumdis-2020-218881

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] シェーグレン症候群における適応免疫と治療への展望2020

    • Author(s)
      竹下勝、鈴木勝也、竹内勤
    • Journal Title

      リウマチ科

      Volume: 64 Pages: 552-558

    • Related Report
      2020 Research-status Report
  • [Presentation] Antigen-specificity of the antibodies produced in the disease lesion of patients with antisynthetase syndrome2022

    • Author(s)
      Masaru Takeshita, Katsuya Suzuki, Maho Nakazawa, Yuko Kaneko
    • Organizer
      第66回日本リウマチ学会総会・学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Single-cell analysis of salivary gland epithelial cells revealed enhanced interferon signature and dysfunction of multipotent stem cells in Sjogren's syndrome.2021

    • Author(s)
      Masaru Takeshita, Katsuya Suzuki, Tsutomu Takeuchi
    • Organizer
      第65回日本リウマチ学会総会・学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] Anti-centromere antibodies target centromere-kinetochore macrocomplex.2021

    • Author(s)
      Nobuhiko Kajio, Masaru Takeshita, Katsuya Suzuki, Tsutomu Takeuchi
    • Organizer
      第65回日本リウマチ学会総会・学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] Antigen-driven autoantibody production in lung lesion of systemic autoimmune diseases.2020

    • Author(s)
      Masaru Takeshita, Katsuya Suzuki, Maho Nakazawa, Tsutomu Takeuchi.
    • Organizer
      第64回日本リウマチ学会総会・学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] Comprehensive analysis of anti-centromere autoantibodies with the centromere protein library in Sjogren's syndrome, systemic sclerosis, and primary biliary cholangitis.2020

    • Author(s)
      Nobuhiko Kajio, Masaru Takeshita, Katsuya Suzuki, Tsutomu Takeuchi.
    • Organizer
      第64回日本リウマチ学会総会・学術集会
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] 抗セントロメア抗体の標的抗原2020

    • Inventor(s)
      梶尾暢彦、竹下勝、鈴木勝也、竹内勤
    • Industrial Property Rights Holder
      梶尾暢彦、竹下勝、鈴木勝也、竹内勤
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-187199
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2023-01-30  

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