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The role of DOCK8 positive CD4 T cell in pathogenesis of SLE and development of target for SLE

Research Project

Project/Area Number 17H06939
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Collagenous pathology/Allergology
Research InstitutionSt. Marianna University School of Medicine (2018)
株式会社膠原病研究所 (2018)
Kyushu University (2017)

Principal Investigator

SAKURAI KEIICHI  聖マリアンナ医科大学, 医学部, 助教 (50805273)

Project Period (FY) 2017-08-25 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords全身性エリテマトーデス / 自己臨界点説 / aiCD4T細胞 / 自己反応性T細胞 / 自己抗体 / 自己免疫疾患 / レパトア解析 / 膠原病 / 自己免疫性疾患
Outline of Final Research Achievements

Systemic lupus erythematosus(SLE) is the disease, which cause serious damages in various organs. New therapies have been introduced for SLE, but its pathogenesis is still unknown, so severe infections caused by therapy are often big problems. We found the method to induce mice with SLE. And in that SLE mice we found a disease spcific T cell subset. We analyzed such subset by molecular biotechnology method, and progress the experience to clarify the character of this cell subset.

Academic Significance and Societal Importance of the Research Achievements

研究代表者達は、マウスにヒトの全身性エリテマトーデスと類似の病気を人工的に起こすことに成功し、そのマウスを研究し、病気に特異的な細胞を見出した。これをaiCD4T細胞と呼び、その特徴を検討したところ、その細胞に特徴的な表面分子を見出した。この分子をもつ細胞が病気の発症にかかわっている可能性が高いことを実験的に見出した。また、CD4陽性T細胞はT細胞受容体と呼ばれる、自己と非自己を見分ける機構があり、全身性エリテマトーデスではこの認識後の反応に問題があることが考えられている。今回そのT細胞受容体の種類と病気のマウスでの特徴を検討した。この研究が進めば副作用の少ない治療法の開発につながると考える。

Report

(2 results)
  • 2018 Final Research Report ( PDF )
  • 2017 Annual Research Report
  • Research Products

    (3 results)

All 2018

All Presentation (3 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] SLEの発症における自己抗体産生誘導性CD4 T細胞(aiCD4 T細胞)によるB細胞ヘルプの検証2018

    • Author(s)
      櫻井恵一、積山賢、塩沢俊一
    • Organizer
      第62回日本リウマチ学会学術集会
    • Related Report
      2017 Annual Research Report
  • [Presentation] The contribution of autoantibody-inducing CD4+ T cell (aiCD4 T cell) help to the B cell maturation and possible autoantibody in Systemic Lupus Erythematosus2018

    • Author(s)
      Keiichi Sakurai, Ken Tsumiyama, Shunichi Shiozawa
    • Organizer
      The American Association of Immunologists, Immunology 2018
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dock8-Positive CD4 T cell as Autoantibody-Inducing CD4 T (aiCD4 T) Cell That Causes Systemic Lupus Erythematosus (SLE): Proof of Concept of Self-Organized Criticality Theory as the Cause of SLE2018

    • Author(s)
      Shunichi Shiozawa,Ken Tsumiyama,Yumi Miyazaki,Keiichi Sakurai,Masaaki Miyazawa
    • Organizer
      The American Association of Immunologists, Immunology 2018
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research

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Published: 2017-08-25   Modified: 2020-03-30  

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