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Experimental trials to promote mucosal barrier via enhancing function of ILC3s

Research Project

Project/Area Number 21K19486
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 53:Organ-based internal medicine and related fields
Research InstitutionKyushu University

Principal Investigator

Sawa Shinichiro  九州大学, 生体防御医学研究所, 教授 (80611756)

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: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
KeywordsILC3 / 細胞株 / STAT5 / レトロウイルスベクター / RORgt / 前駆細胞 / ウイルスベクター / in vitro / IL-22 / 腸管免疫 / 炎症性腸疾患 / スクリーニング
Outline of Research at the Start

「外来微生物からの生体防御能の維持」と「自己組織に対する免疫異常の抑制」を両立する手段は現在確立されておらず、炎症性腸疾患や急性GVHDの治療に難渋することが多い。上皮バリア機能の向上に着目したILC3の機能増強は制御性T細胞を用いた細胞療法や免疫抑制剤に替わる画期的治療法になりうる。

Outline of Final Research Achievements

Group3 Innate Lymphoid Cell=ILC3 is a member of innate lymphoid cells which play critical roles on the maintenance of intestinal epithelial barrier. In this project, I planed to establish novel therapeutic strategy to promotes epithelial barrier by transferring ILC3s as well as by using small chemical compounds which enhance function of ILC3s. To achieve these aims, establishment of cell lines of ILC3 is the most challenging issue which should be overcome. In this project, I tried to establish retroviral vector-based gene delivery system into ILC3s. In the first step, I succeeded in generating pMXs-tdTomato-P2A-STAT5CA plasmid, which should prolong survival of viral infected lymphocytes. In the second step, I confirmed tdTomato-P2A-STAT5CA expression in viral particle packaging cells named Phoenix cells. However, due to technical issues, in vitro culture of ILC3s from adult mice have not been succeeded.

Academic Significance and Societal Importance of the Research Achievements

ILC3は腸管バリア機能の維持に極めて重要な役割を果たすことから、「生体内における ILC3数の増加や機能増強は細菌性腸炎、ウイルス性腸炎などの感染性腸炎からの生体防御や炎症性腸疾患やアレルギー、急性GVDHなどの免疫異常の予防につながる可能性が高い。しかし、これまでILC3の細胞株は存在せず、gain-of functionによる生体内ILC3機能評価を行うことは不可能であった。本研究ではリンパ球の生存を促進させる恒常的活性型STAT5(STAT5CA) をレトロウイルスによりILC3へと遺伝子導入させ、ILC3細胞株の樹立を実現させるために必要なレトロウイルスベクターの樹立に成功した。

Report

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

    (15 results)

All 2023 2022 Other

All Int'l Joint Research (3 results) Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (11 results) (of which Int'l Joint Research: 3 results,  Invited: 4 results)

  • [Int'l Joint Research] パスツール研究所(フランス)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] ドイツ癌研究センター(DKZF)(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Institute Pasteur(フランス)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Dermal Vγ6+ γδ T17 Cells are Involved in Skin Pressure Ulcers in Mice2022

    • Author(s)
      Mine Keiichiro、Tun Xin、Hatano Shinya、Noguchi Naoto、Iwakura Yoichiro、Sawa Shinichiro、Nagafuchi Seiho、Yoshikai Yasunobu
    • Journal Title

      Journal of Investigative Dermatology

      Volume: 7 Issue: 8 Pages: 00002-00002

    • DOI

      10.1016/j.jid.2021.12.030

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 腸管マクロファージニッチ細胞の検討2023

    • Author(s)
      澤 新一郎
    • Organizer
      第7回理論免疫学ワークショップ
    • Related Report
      2022 Annual Research Report
  • [Presentation] 粘膜免疫研究の最前線2022

    • Author(s)
      澤新一郎
    • Organizer
      第42回阿蘇シンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 免疫組織の設計図を解読する2022

    • Author(s)
      澤新一郎
    • Organizer
      第2回シングルセルゲノミクス研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Transcriptomic landscapes of whole lung cells after influenza infection in mice. The 20th Awaji International Forum on Infection and Immunity2022

    • Author(s)
      Shinichiro Sawa
    • Organizer
      The 20th Awaji International Forum on Infection and Immunity
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 免疫組織の形成を担う自己免疫疾患関連分子2022

    • Author(s)
      澤新一郎
    • Organizer
      第14回大阪骨関節コロキウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] ILC3/LTi細胞におけるRORγt発現制御機構の解明2022

    • Author(s)
      福井卓磨、香城諭、住谷瑛理子、小泉真一、澤新一郎
    • Organizer
      第31回 Kyoto T cell conference 学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 腸管マクロファージの維持に寄与するCSF1産生細胞の解析2022

    • Author(s)
      野中 大地, 住谷 瑛理子,澤 新一郎
    • Organizer
      31回Kyoto T Cell Conference 学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ILC3研究のこれまでとこれから2022

    • Author(s)
      澤新一郎
    • Organizer
      日本免疫学会サマースクール
    • Related Report
      2022 Annual Research Report
  • [Presentation] Regulatory mechanism of RORgt expression in ILC32022

    • Author(s)
      Takuma Fukui, Satoshi Kojo, Eriko Sumiya, Miyuki Watanabe, Shinichiro Sawa
    • Organizer
      The 31st Hot Spring Harbor International Symposium
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] CSF1-producing cells in the intestine contributes to the maintenance of macrophages2022

    • Author(s)
      Daichi Nonaka, Eriko sumiya, Shinichiro Sawa
    • Organizer
      第51回日本免疫学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Regulatory mechanism of RORgt expression in ILC32022

    • Author(s)
      Takuma Fukui, Satoshi Kojo, Eriko Sumiya, Shinichi Koizumi, Shinichiro Sawa
    • Organizer
      第51回日本免疫学会学術集会
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research

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

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