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Detection and characterization of dual-TCR T cells

Research Project

Project/Area Number 21K19371
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 49:Pathology, infection/immunology, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Nitta Takeshi  東京大学, 大学院医学系研究科(医学部), 准教授 (30373343)

Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
KeywordsT細胞 / 抗原受容体 / TCR / マウス / ゲノム編集 / レポーターマウス
Outline of Research at the Start

2種類のTCRをもつ「Dual-TCR T細胞」は、2種類の抗原に対する免疫応答(交叉反応)を示し、従来の免疫学の原則から逸脱する。生体内のDual-TCR T細胞の検出は容易ではないため、その意義については不明な点が多い。本研究では、独自に作製したレポーターマウスを用いて、Dual-TCR T細胞を検出・単離し、その生理的意義を解明することをめざす。本研究の成果により、T細胞による抗原認識の実態が明らかになり、ウイルス感染症やがんに対する新規の治療戦略が得られると期待される。

Outline of Final Research Achievements

A subpopulation of T cells express two T cell receptor (TCR) alpha chains, although the nature and immunological significance of such dual-TCR T cells has been poorly understood. In this study, we generated mice with reporter genes linked via 2A peptides to the constant region of the TCRa gene, to evaluate dual-TCR T cells in vivo. In addition, the mice with epitope tags inserted at the extracellular site of the constant region of TCRa were generated, to distinguish ‘holo dual-TCR T cells’, which express two TCRa on the cell surface, and ‘hemi dual-TCR T cells’, which express one TCRa and keep another TCRa inside the cell. Using these mice, we demonstrated the in vivo distribution of dual-TCR T cells in steady state as well as during immune responses.

Academic Significance and Societal Importance of the Research Achievements

近年、二重特異性(bispecific)抗体やキメラ抗原受容体(CAR)を用いるがん免疫治療など、免疫系の抗原特異的作用を治療に応用する試みが注目を集めている。本研究の目標であるDual-TCR細胞の意義の解明は、T細胞の基礎的性状を理解するにとどまらず、2種類の抗原特異性を示すT細胞を医療に応用する可能性につながる。Dual-TCR T細胞は自己免疫疾患や移植片対宿主病(GVHD)に関与することが指摘されている。本研究で確立したモデル動物と、dual-TCR細胞に関する新知見は、それらの疾患に関するよりよい理解と新規の治療戦略に繋がると期待される。

Report

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

    (19 results)

All 2023 2022 2021 Other

All Int'l Joint Research (7 results) Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 4 results) Remarks (2 results)

  • [Int'l Joint Research] The University of British Columbia(カナダ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] King's College London(英国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] German Cancer Research Center(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] The University of British Columbia(カナダ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] King's College London(英国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] German Cancer Research Center(ドイツ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] The Children’s Hospital of Philadelphia(米国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Spleen tyrosine kinase mediates the γδTCR signaling required for γδT cell commitment and γδT17 differentiation2023

    • Author(s)
      Muro R, Narita T, Nitta T, Takayanagi H
    • Journal Title

      Front Immunol.

      Volume: 13 Pages: 1045881-1045881

    • DOI

      10.3389/fimmu.2022.1045881

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mesenchymal stromal cells in the thymus.2022

    • Author(s)
      Nitta T,
    • Journal Title

      Inflamm Regen

      Volume: 42 Issue: 1 Pages: 33-33

    • DOI

      10.1186/s41232-022-00219-5

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] ETS1 governs pathological tissue-remodeling programs in disease-associated fibroblasts2022

    • Author(s)
      Yan Minglu、Komatsu Noriko、Muro Ryunosuke、Huynh Nam Cong-Nhat、Kitazawa Riko、Kitazawa Sohei、Pluemsakunthai Warunee、Mitsui Yuichi、Satoh Takashi、Okamura Tadashi、Nitta Takeshi、Im Sin-Hyeog、Kim Chan Johng、Kollias George、Tanaka Sakae、Okamoto Kazuo、Tsukasaki Masayuki、Takayanagi Hiroshi
    • Journal Title

      Nature Immunology

      Volume: 23 Issue: 9 Pages: 1330-1341

    • DOI

      10.1038/s41590-022-01285-0

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Periosteal stem cells control growth plate stem cells during postnatal skeletal growth2022

    • Author(s)
      Tsukasaki M, Komatsu N, Negishi-Koga T, Huynh NC, Muro R, Ando Y, Seki Y, Terashima A, Pluemsakunthai W, Nitta T, Nakamura T, Nakashima T, Ohba S, Akiyama H, Okamoto K, Baron R, Takayanagi H
    • Journal Title

      Nat Commun

      Volume: 13 Issue: 1 Pages: 4166-4166

    • DOI

      10.1038/s41467-022-31592-x

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The transcription factor Sox4 is required for thymic tuft cell development2021

    • Author(s)
      Mino Nanami、Muro Ryunosuke、Ota Ayami、Nitta Sachiko、Lefebvre Veronique、Nitta Takeshi、Fujio Keishi、Takayanagi Hiroshi
    • Journal Title

      International Immunology

      Volume: 34 Issue: 1 Pages: 45-52

    • DOI

      10.1093/intimm/dxab098

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The fibroblast: An emerging key player in thymic T cell selection2021

    • Author(s)
      Nitta Takeshi、Ota Ayami、Iguchi Takahiro、Muro Ryunosuke、Takayanagi Hiroshi
    • Journal Title

      Immunological Reviews

      Volume: 302 Issue: 1 Pages: 68-85

    • DOI

      10.1111/imr.12985

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Diversity of thymic stromal cells for T cell repertoire selection2022

    • Author(s)
      Takeshi Nitta
    • Organizer
      第51回日本免疫学会学術集会
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] T細胞分化における線維芽細胞の役割2022

    • Author(s)
      新田 剛
    • Organizer
      第50回日本臨床免疫学会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 胸腺線維芽細胞によ免疫寛容の制御2021

    • Author(s)
      新田 剛、高柳 広
    • Organizer
      第42回日本炎症・再生医学会 シンポジウム
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 胸腺線維芽細胞による中枢性免疫寛容の制御2021

    • Author(s)
      新田 剛、高柳 広
    • Organizer
      第65回日本リウマチ学会総会・日本免疫学会合同シンポジウム
    • Related Report
      2021 Research-status Report
    • Invited
  • [Remarks] 東京大学大学院医学系研究科 免疫学 高柳研究室 研究内容

    • URL

      http://osteoimmunology.com/research.html

    • Related Report
      2022 Annual Research Report
  • [Remarks] 東京大学大学院医学系研究科 免疫学 高柳研究室 研究内容

    • URL

      http://osteoimmunology.com/research.html

    • Related Report
      2021 Research-status Report

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Published: 2021-07-13   Modified: 2024-01-30  

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