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Crosstalk between GATA3+ regulatory T cells and renal resident cells in crescentic glomerulonephritis

Research Project

Project/Area Number 21K16291
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 InstitutionSaitama Medical University

Principal Investigator

Sakai Ryota  埼玉医科大学, 医学部, 講師 (80727529)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords制御性T細胞 / 組織制御性T細胞 / 抗原提示細胞 / TCR / GATA3 / ポドサイト / メサンギウム細胞 / 血管内皮細胞 / 半月体形成性糸球体腎炎 / IL-33 / IL-2 / LacZ / 腎炎 / 足細胞 / 線維芽細胞
Outline of Research at the Start

筆者は腎臓に存在する組織制御性T細胞(組織Treg)と呼ばれるTregに着目し、特に腎炎回復期に出現するGATA3陽性Tregがどのように腎固有細胞(線維芽細胞や血管内皮細胞、足細胞など)に作用して、過剰な炎症と線維化を収束に導き、修復に寄与するのか、その具体的機序を明らかにしたい。本研究は、腎炎マウスモデルから分離したGATA3陽性Tregがどのように寛容維持に寄与し、過剰な線維化を抑制するのかを明らかにして、腎炎の炎症収束・組織修復および再生機構を解明し、慢性腎不全を防ぐ治療応用を目的とする研究である。

Outline of Final Research Achievements

We have established a new method for extracting glomeruli from kidneys with high purity and high yield by combining a filter method using electrostatic charges in addition to the previously reported beads method. The glomeruli were isolated at the single-cell level by cell sorting, and cultured and passaged as primary culture cells, enabling co-culture with regulatory T cells (Treg).
Strong TCR stimulation, which is required for the proliferation and survival of conventional T cells, also enhanced T-bet and RORgt expression in Tregs, while GATA3 expression was suppressed. In thymus-derived Tregs, "not too strong TCR stimulation" enhanced GATA3 expression, indicating that it was due to stimulation from organ-specific cells such as mesangial cells rather than dendritic cells, which are professional antigen-presenting cells.

Academic Significance and Societal Importance of the Research Achievements

プロフェッショナルな抗原提示細胞といわれる樹状細胞ではなく、糸球体から抽出された臓器固有細胞との共培養においてのみ、TregにおけるGATA3の発現が亢進したことから、臓器局所に遊走されたTregにおいて、組織制御性T細胞として機能するために「強すぎないTCR刺激」がGATA3発現には必要で、これは臓器固有細胞によってもたらされる可能性があり、ヒト細胞での臨床応用が期待される。

Report

(3 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (8 results)

All 2023 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (5 results)

  • [Journal Article] Systematic review and meta-analysis for 2023 clinical practice guidelines of the Japan Research Committee of the Ministry of Health, Labour, and Welfare for Intractable Vasculitis for the management of ANCA-associated vasculitis2022

    • Author(s)
      Watanabe Ryu、Oshima Megumi、Nishioka Norihiro、Sada Ken-Ei、Nagasaka Kenji、Akiyama Mitsuhiro、Ando Taiki、Higuchi Tomoaki、Inoue Yoshino、Kida Takashi、Mutoh Tomoyuki、Nakabayashi Akihiko、Onishi Akira、Sakai Ryota、Waki Daisuke、Yamada Yosuke、Yajima Nobuyuki、Tamura Naoto、Kaname Shinya、Harigai Masayoshi
    • Journal Title

      Modern Rheumatology

      Volume: - Issue: 5 Pages: 982-989

    • DOI

      10.1093/mr/roac114

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Concurrent Takayasu Arteritis and Vascular Ehlers?Danlos Syndrome: A Case Report2022

    • Author(s)
      Hashimoto Kyota、Sakai Ryota、Shibata Akiko、Okada Yusuke、Yoshinaga Syoichi、Kurasawa Takahiko、Kondo Tsuneo、Amano Koichi
    • Journal Title

      Frontiers in Cardiovascular Medicine

      Volume: 9 Pages: 805505-805505

    • DOI

      10.3389/fcvm.2022.805505

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Potential Triggers for Thrombocytopenia and/or Hemorrhage by the BNT162b2 Vaccine, Pfizer-BioNTech2021

    • Author(s)
      Okada Yusuke、Sakai Ryota、Sato-Fitoussi Marie、Nodera Marika、Yoshinaga Shoichi、Shibata Akiko、Kurasawa Takahiko、Kondo Tsuneo、Amano Koichi
    • Journal Title

      Frontiers in Medicine

      Volume: 8

    • DOI

      10.3389/fmed.2021.751598

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] AI(人工知能)で迫る、顔認識による膠原病疾患の新たな診断補助ツールの開発2023

    • Author(s)
      4.酒井亮太、吉永正一、岡田悠介、柴田明子、倉沢隆彦、近藤恒夫、天野宏一
    • Organizer
      第67回日本リウマチ学会総会・学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] ループス腎炎に対するシクロホスファミド・タクロリムス併用療法の有用性と安全性2022

    • Author(s)
      酒井亮太、柴田明子、岡田悠介、吉永正一、斎藤俊太郎、倉沢隆彦、近藤恒夫、天野宏一
    • Organizer
      第66回日本リウマチ学会総会・学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] The survival factors of GATA3+ Tregs in the convalescence stage of glomerulonephritis2022

    • Author(s)
      Ryota Sakai, Mariko Toguchi, Koichi Amano
    • Organizer
      第51回日本免疫学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] 腎炎回復期に出現するGATA3陽性Tregの生存に最も寄与する因子の検討2022

    • Author(s)
      酒井亮太、戸口真理子、天野宏一
    • Organizer
      第50回日本臨床免疫学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Tissue resident GATA3+ regulatory T cells regulated by the IL-33-ST2 axis and amphiregulin play roles in the convalescence stage of crescentic glomerulonephritis.2021

    • Author(s)
      Ryota Sakai, Koichi Amano
    • Organizer
      The 65st Annual Scientific Meeting of the Japan College of Rheumatology. April 26-28, 2021
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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