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Physiological significance of trained-innate lymphoid cells

Research Project

Project/Area Number 21K19368
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 InstitutionAkita University

Principal Investigator

Ebihara Takashi  秋田大学, 医学系研究科, 教授 (20374407)

Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2023: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
KeywordsTrained immunity / ILC1 / ILC2 / ILC3 / NK細胞 / 自然リンパ球 / 訓練免疫
Outline of Research at the Start

自然リンパ球(ILC: Innate lymphoid cell)は、抗原非特異的な炎症を記憶し組織に常在する。これをILCの訓練免疫という。しかし、ILC訓練免疫の生理的意義は、現在まで疑問視されている。なぜなら、炎症を経験したILCを除去する生体システムがないためである。そこで、本研究では炎症の記憶をもったILCを除去する生体システムを構築することを目標とする。

Outline of Final Research Achievements

Group 2 innate lymphoid cells (ILC2s) play a pivotal role in initiating allergic inflammation through the secretion of Th2 helper cytokines. Following activation by allergic stimuli, a subset of ILC2s remains within the mucosal tissue. Upon re-exposure to allergens, these "trained" ILC2s mount a robust response. In our study, we investigated the fate of activated ILC2s, whether they transition to trained ILC2s or undergo cell death. To track the activated ILC2s, we utilized fate tracer mice expressing tdTomato in KLRG1-, PD-1-, or TIGIT-expressing activated ILC2s. Our findings indicate that TIGIT+ ILC2s, representing highly activated cells, are swiftly eliminated from the airways through interaction with CD155+ alveolar macrophages. We propose to term this type of cell death "activation-induced cell death of ILC2s" (ILC2 AICD). This newly discovered mechanism offers a promising approach to mitigating chronic airway allergy.

Academic Significance and Societal Importance of the Research Achievements

ILC2は活性化を維持したまま非常によく増殖することが知られており、アレルギー炎症の増悪に寄与する細胞と知られていた。しかし、今まで活性化したILC2がどのように除去されていくのか明らかになっていなかった。私達の研究結果により活性化ILC2はTIGITを発現した後にマクロファージにより生体内から除去されていくことが明らかになった。活性化ILC2にAICDを誘導する手段を開発できれば、慢性アレルギー炎症に対する新しい治療戦略となるかもしれない。

Report

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

    (33 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (3 results) Journal Article (9 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (15 results) (of which Int'l Joint Research: 1 results,  Invited: 5 results) Book (2 results) Remarks (4 results)

  • [Int'l Joint Research] Hannover Medical School(ドイツ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Hannover Medical School(ドイツ)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Washington University in St.Louis(米国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] ILC2と疲弊2024

    • Author(s)
      海老原 敬, 山田俊樹
    • Journal Title

      医学とあゆみ

      Volume: 288 Pages: 43-47

    • Related Report
      2023 Annual Research Report
  • [Journal Article] 訓練免疫と自然リンパ球メモリー2024

    • Author(s)
      海老原敬、立松恵、高須賀俊輔
    • Journal Title

      臨床免疫・アレルギー科

      Volume: 80 Pages: 22-28

    • Related Report
      2023 Annual Research Report
  • [Journal Article] TIGIT mediates activation-induced cell death of ILC2s during chronic airway allergy2023

    • Author(s)
      Yamada T, Tatematsu M, Takasuga S, Fuchimukai A, Yamagata K, Seki S, Kuba K, Yoshida H, Taniuchi I, Bernhardt G, Shibuya K, Shibuya A, Yamada T, Ebihara T.
    • Journal Title

      J Exp Med

      Volume: 220 Issue: 7 Pages: 20222005-20222005

    • DOI

      10.1084/jem.20222005

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] CD45 alleviates airway inflammation and lung fibrosis by limiting expansion and activation of ILC2s2023

    • Author(s)
      Cui Guangwei、Shimba Akihiro、Jin Jianshi、Hojo Nozomi、Asahi Takuma、Abe Shinya、Ejima Aki、Okada Shinri、Ohira Keizo、Kato Ryoma、Tani-ichi Shizue、Yamada Ryo、Ebihara Takashi、Shiroguchi Katsuyuki、Ikuta Koichi
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 120 Issue: 36

    • DOI

      10.1073/pnas.2215941120

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Quantification of Aspergillus fumigatus antigen Asp f 1 in airway tissue and allergic inflammation2022

    • Author(s)
      Miyabe Yui、Tomizawa Hiroki、Saito Hidekazu、Yamada Toshiki、Shiina Kazuhiro、Koizumi Koh、Kawasaki Yohei、Suzuki Shinsuke、Fukuchi Mineyo、Ueki Shigeharu、Ebihara Takashi、Yamada Takechiyo
    • Journal Title

      Allergy

      Volume: 77 Issue: 10 Pages: 3154-3156

    • DOI

      10.1111/all.15428

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Identification of Galectin-7 as a crucial metastatic enhancer of squamous cell carcinoma associated with immunosuppression2022

    • Author(s)
      An Jianbo、Nagaki Yushi、Motoyama Satoru、Kuze Yuta、Hoshizaki Midori、Kemuriyama Kohei、Yamaguchi Tomokazu、Ebihara Takashi、Minamiya Yoshihiro、Suzuki Yutaka、Imai Yumiko、Kuba Keiji
    • Journal Title

      Oncogene

      Volume: 41 Issue: 50 Pages: 5319-5330

    • DOI

      10.1038/s41388-022-02525-1

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 抗原受容体をもたないリンパ球 NK細胞2022

    • Author(s)
      海老原敬
    • Journal Title

      臨床検査

      Volume: 66 Pages: 583-587

    • Related Report
      2022 Research-status Report
  • [Journal Article] 2型自然リンパ球の訓練免疫2022

    • Author(s)
      海老原敬, 立松恵, 高須賀俊輔, 山田俊樹, 山田武千代
    • Journal Title

      【COPDと気管支喘息、その周辺疾患-病態・診断・治療の最新動向-】喘息病態up-to-date

      Volume: 80 Pages: 586-590

    • Related Report
      2022 Research-status Report
  • [Journal Article] Trained innate lymphoid cells in allergic diseases2021

    • Author(s)
      Ebihara T, Tatematsu M, Fuchimukai A, Yamada T, Yamagata K, Takasuga S, Yamada T
    • Journal Title

      Allergology International

      Volume: 70 Issue: 2 Pages: 174-180

    • DOI

      10.1016/j.alit.2020.11.007

    • NAID

      130008024334

    • ISSN
      1323-8930, 1440-1592
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Exhaustion and Activation-Induced Cell Death of ILC2s in chronic allergy2024

    • Author(s)
      Takashi Ebihara
    • Organizer
      The 52nd Annual Meeting of the Japanese Society for Immunology
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Cnot3 differentially regulates differentiation and function of innate lymphoid cells2024

    • Author(s)
      Megumi Tatematsu, Akane Fuchimukai, Shunsuke Takasuga, Toshiki Yamada, Kenji Ishiwata, Ichiro Taniuchi, Shinichiro Sawa, Keiji Kuba, Takashi Ebihara
    • Organizer
      The 52nd Annual Meeting of the Japanese Society for Immunology
    • Related Report
      2023 Annual Research Report
  • [Presentation] Ccr4-not複合体による自然リンパ球の制御2023

    • Author(s)
      立松恵、高須賀俊輔、渕向茜、海老原敬
    • Organizer
      第75回日本細菌学会東北支部 総会・学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 代償的なINPP4B過剰発現によるPTEN遺伝子欠損の機能代替の機構2023

    • Author(s)
      高須賀俊輔、佐々木雄彦、海老原敬
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Activation-induced cell death of ILC2 regulates chronic allergic inflammation2022

    • Author(s)
      Toshiki Yamada, Megumi Tatematsu, Shunsuke Takasuga, Kenki Yamagata, Kazuko Shibuya, Akira Shibuya, Takechiyo Yamada, Takashi Ebihara
    • Organizer
      4TH INTERNATIONAL CONFERENCE ON INNATE LYMPHOID CELLS (ILC4)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Caloric restriction induces cellular quiescence in hepatic ILC1s2022

    • Author(s)
      Megumi Tatematsu, Akane Fuchimukai, Tsukasa Nabekura, Akira Shibuya, and Takashi Ebihara
    • Organizer
      The 51th Annual Meeting of the Japanese Society for Immunology
    • Related Report
      2022 Research-status Report
  • [Presentation] TIGIT mediates activation-induced cell death of ILC2s2022

    • Author(s)
      Toshiki Yamada, Akane Fuchimukai, Megumi Tatematsu, Shunsuke Takasuga, Hideyuki Yoshida, Kazuko Shibuya, Akira Shibuya, Takashi Ebihara
    • Organizer
      The 51th Annual Meeting of the Japanese Society for Immunology
    • Related Report
      2022 Research-status Report
  • [Presentation] 自然リンパ球の多様性と運命決定機構2022

    • Author(s)
      海老原敬
    • Organizer
      第74回 日本細菌学会東北支部会 学術集会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 低栄養状態により誘導されるILC1 Quiescence2022

    • Author(s)
      立松恵、渕向茜、海老原敬
    • Organizer
      第74回 日本細菌学会東北支部会 学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] 2型自然リンパ球の多様性とアレルギー疾患2022

    • Author(s)
      海老原敬
    • Organizer
      第3回秋田アレルギー疾患フォーラム
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 自然リンパ球の多様性と疾患2022

    • Author(s)
      海老原敬
    • Organizer
      第86回秋田県医学会総会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 自然リンパ球の多様性と小児疾患2022

    • Author(s)
      海老原敬
    • Organizer
      第121回日本小児科学会秋田地方会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Activation-induced cell death of ILC2s confers protection against chronic allergic inflammation2021

    • Author(s)
      Yamada T, Tatematsu M, Ebihara T.
    • Organizer
      第50回日本免疫学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] The Ccr4-Not deadenylase complex controls antitumor NK cell activity2021

    • Author(s)
      Tatematsu M, Sawa S, Ikuta K, Ebihara T.
    • Organizer
      第50回日本免疫学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 肝特異的ホスファチジルグリセロールリン酸ホスファターゼ遺伝子欠損によるラロン型低身長症様疾患モデルマウス2021

    • Author(s)
      高須賀俊輔、海老原敬、佐々木雄彦
    • Organizer
      第94回日本生化学会大会
    • Related Report
      2021 Research-status Report
  • [Book] 標準微生物学 第15版 第30章 ウイルスの病原性2024

    • Author(s)
      海老原敬
    • Total Pages
      11
    • Publisher
      医学書院
    • ISBN
      9784260053440
    • Related Report
      2023 Annual Research Report
  • [Book] 標準微生物学 第14版 第3版 第30章 ウイルスの病原性2023

    • Author(s)
      海老原敬
    • Total Pages
      11
    • Publisher
      医学書院
    • Related Report
      2022 Research-status Report
  • [Remarks] 秋田大学研究者総覧

    • URL

      https://akitauinfo.akita-u.ac.jp/html/100000968_ja.html

    • Related Report
      2023 Annual Research Report
  • [Remarks] 秋田大学大学院医学系研究科微生物学講座

    • URL

      https://www.med.akita-u.ac.jp/department/gs/kenkyu-org/kouza.php?koza=bisei

    • Related Report
      2023 Annual Research Report
  • [Remarks] 秋田大学大学院医学系研究科トピックス

    • URL

      https://www.med.akita-u.ac.jp/topics/20230425.php

    • Related Report
      2023 Annual Research Report
  • [Remarks] 微生物学講座所属 山田 俊樹 医員が自然リンパ球の国際学会において、Travel Awardsを受賞

    • URL

      https://www.med.akita-u.ac.jp/topics/20221220.php

    • Related Report
      2022 Research-status Report

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Published: 2021-07-13   Modified: 2025-01-30  

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