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Molecular mechanism of inflammatory gdT cell development

Research Project

Project/Area Number 19K16602
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 49030:Experimental pathology-related
Research InstitutionThe University of Tokyo

Principal Investigator

Ryunosuke Muro  東京大学, 大学院医学系研究科(医学部), 特別研究員 (80761262)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsgdT / Syk / Lck / IL-17 / TCR / gdT細胞 / γδ / 胸腺 / γδT / サイトカイン
Outline of Research at the Start

gdT細胞は胸腺にて分化する非典型的T細胞であり、炎症性サイトカインを産生することで 生体防御の一助を担う。しかし、gdT細胞がどのようにサイトカイン産生能を獲得するのか は十分に理解されていない。本研究では、IL-17産生型gdT細胞に着目し、その分化を制御す るT細胞受容体シグナル伝達メカニズムの解明に挑む。さらに、IL-17産生型gdT細胞を特徴 づけるTCRレパトアの解明を目指す。将来的には、未知のgdTCRリガンドの同定や疾患にお けるgdT細胞の制御に必要とされる重要な情報基盤を提供し、基礎医学の発展に貢献する。

Outline of Final Research Achievements

We previously have found that Syk, a tyrosine kinase, is essential for the thymic development of IL-17 producing gdT cells. In this study, we aimed to clarify a role of Syk in regulating development of gdT cells in adult mice, by means of lymphoid lineage-specific Syk-deficient (Syk cKO) mice. In addition, we explored Src family kinase (SFK) that stimulates Syk activation in gdT cell. Our result showed that impaired gdTCR signaling and nearly complete loss of gdT17 development in Syk cKO mice. Mice defective in Lck, one of the SFK essential for generation of abT cells, displayed a phenotype similar to Syk cKO mice. Thus, these results suggest an essential role of Lck in activation of Syk to support thymic development of gdT17 cells.

Academic Significance and Societal Importance of the Research Achievements

本研究にて、研究代表者らは、新生仔だけでなく、成体期においてもgdT細胞の分化にSykが重要な役割を果たしていることを見出した。また、本研究により、LckがSykの活性化に関わることが示唆された。一方で、我々の結果は、BlkというSFKはgdT17細胞の分化に不要であることを示しており、過去の報告とは異なっている。gdT細胞におけるBlkの役割を再議論する必要があり、検証を継続しなければならない。本研究成果から、SykやLckを標的とすることで、炎症性gdT細胞を人為的に制御できる可能性があり、炎症性疾患の治療法確立に繋がる可能性がある。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (8 results)

All 2021 2020 2019

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (3 results)

  • [Journal Article] tepwise cell fate decision pathways during osteoclastogenesis at single-cell resolution.2021

    • Author(s)
      Tsukasaki M, Huynh NC, Okamoto K, Muro R, Terashima A, Kurikawa Y, Komatsu N, Pluemsakunthai W, Nitta T, Abe T, Kiyonari H, Okamura T, Sakai M, Matsukawa T, Matsumoto M, Kobayashi Y, Penninger JM, Takayanagi H
    • Journal Title

      Nat Metab

      Volume: 2 Issue: 12 Pages: 1382-1390

    • DOI

      10.1038/s42255-020-00318-y

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] OPG Production Matters Where It Happened.2020

    • Author(s)
      Tsukasaki M, Asano T, Muro R, Huynh NC, Komatsu N, Okamoto K, Nakano K, Okamura T, Nitta T, Takayanagi H
    • Journal Title

      Cell Rep

      Volume: 32 Issue: 10 Pages: 1-10

    • DOI

      10.1016/j.celrep.2020.108124

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fibroblasts as a source of self-antigens for central immune tolerance2020

    • Author(s)
      Nitta Takeshi、Tsutsumi Masanori、Nitta Sachiko、Muro Ryunosuke、Suzuki Emma C.、Nakano Kenta、Tomofuji Yoshihiko、Sawa Shinichiro、Okamura Tadashi、Penninger Josef M.、Takayanagi Hiroshi
    • Journal Title

      Nature Immunology

      Volume: 21 Issue: 10 Pages: 1172-1180

    • DOI

      10.1038/s41590-020-0756-8

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Retroviral Gene Transduction into T Cell Progenitors for Analysis of T Cell Development in the Thymus2020

    • Author(s)
      Muro Ryunosuke、Takayanagi Hiroshi、Nitta Takeshi
    • Journal Title

      Methods in Molecular Biology

      Volume: 2111 Pages: 193-203

    • DOI

      10.1007/978-1-0716-0266-9_16

    • ISBN
      9781071602652, 9781071602669
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Soluble RANKL is physiologically dispensable but accelerates tumour metastasis to bone2019

    • Author(s)
      Asano Tatsuo、Okamoto Kazuo、Nakai Yuta、Tsutsumi Masanori、Muro Ryunosuke、Suematsu Ayako、Hashimoto Kyoko、Okamura Tadashi、Ehata Shogo、Nitta Takeshi、Takayanagi Hiroshi
    • Journal Title

      Nature Metabolism

      Volume: 1 Issue: 9 Pages: 868-875

    • DOI

      10.1038/s42255-019-0104-1

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 炎症性gdT細胞の分化における分子シグナル伝達2019

    • Author(s)
      室龍之介
    • Organizer
      第19回東京大学生命化学シンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] 炎症性gdT細胞の分化を誘導するTCRシグナルの解明ポスター2019

    • Author(s)
      室龍之介
    • Organizer
      第40回 日本炎症・再生医学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Molecular mechanism of Syk-mediated TCR signal in gdT cells2019

    • Author(s)
      Ryunosuke Muro
    • Organizer
      第48回日本免疫学会学術集会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2022-01-27  

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