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Development of innovative cancer immunotherapy targeting metabolites applicable to all patients

Research Project

Project/Area Number 20K07539
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49070:Immunology-related
Research InstitutionYamaguchi University

Principal Investigator

Shibata Kensuke  山口大学, 大学院医学系研究科, 講師 (50529972)

Co-Investigator(Kenkyū-buntansha) 山崎 晶  大阪大学, 微生物病研究所, 教授 (40312946)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
KeywordsT細胞 / 代謝産物 / 免疫療法 / ガン / ガン免疫療法 / 腫瘍免疫 / 細胞免疫療法 / 医薬分子機能学
Outline of Research at the Start

従来のガン免疫療法では主に、ペプチド特異的T細胞が主に用いられてきた。ガン免疫療法は、患者由来ガン特異的T細胞をin vitro にて増殖させた後、患者に戻す手法が用いられる。しかし、ペプチド特異的T細胞の増殖は、ガン由来ペプチドの抗原提示に関わる個人間で多型性に富むMHC により制御され、そのMHCの多型性が臨床応用の障害となってきた。一方、MR1T細胞は個人間で共通のMR1 分子によってそれらの増殖が制御され、抗原認識により抗ガン活性を発揮する。したがって、MR1T 細胞が認識するガン由来抗原を同定することで、全てのガン患者に対する治療応用が可能となることが期待される。

Outline of Final Research Achievements

Through recognition of cancer-derived antigens, T cells contribute to killing, metastasis and growth of cancerous cells. Identification of T cell antigens is prerequisite for understanding of cancer biology; however, identity and functions of tumor-associated metabolites recognized by T cells remained unclear. Herein, we demonstrate that a colorectal tumor-associated metabolite, 5-formyl tetrahydrofolate (5-formyl THF) that is generated in the folate synthetic pathway, induces TCR-dependent activation of mouse mucosal-associated invariant T (MAIT) cells. Genetic deletion of Aminomethyltransferase (Amt), encoding a converting enzyme to generate 5-formyl THF, in the colorectal tumor impaired the activation of mouse MAIT cells, whereas Amt-overexpressing colorectal tumors enhanced it. 5-formyl THF had an MAIT cell-dependent anti-tumor activity both in vitro and in vivo.

Academic Significance and Societal Importance of the Research Achievements

MR1T細胞は、2014年に様々な病原体が産生するビタミンB合成中間体を認識し感染防御に働くこと(A.J. Corbett, Nature, 2014)、そしてMR1T細胞特異的検出試薬の開発により特にヒト健常人末梢血中の抗原特異的T細胞の中で最も頻度が高いことが明らかとなり (DI. Godfrey, Na. Rev. Immunol., 2015)、その機能が注目されている。本研究では、世界に先駆けてMR1T細胞が認識するガン抗原を見出し、その抗原を用いた抗ガン効果を確認した。したがって本研究成果は、代謝産物に着目した世界で初めての新規治療法の開発につながることが期待される。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (9 results)

All 2023 2022 2021 2020 Other

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

  • [Int'l Joint Research] Victoria University of Wellington(ニュージーランド)

    • Related Report
      2022 Research-status Report
  • [Journal Article] Symbiotic bacteria-dependent expansion of MR1-reactive T cells causes autoimmunity in the absence of Bcl11b2022

    • Author(s)
      Shibata Kensuke、Motozono Chihiro、Nagae Masamichi、Shimizu Takashi、Ishikawa Eri、Motooka Daisuke、Okuzaki Daisuke、Izumi Yoshihiro、Takahashi Masatomo、Fujimori Nao、Wing James B.、Hayano Takahide、Asai Yoshiyuki、Bamba Takeshi、Ogawa Yoshihiro、Furutani-Seiki Makoto、Shirai Mutsunori、Yamasaki Sho
    • Journal Title

      Nature Communications

      Volume: 13 Issue: 1 Pages: 6948-6948

    • DOI

      10.1038/s41467-022-34802-8

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The intracellular pathogen <i>Francisella tularensis</i> escapes from adaptive immunity by metabolic adaptation2022

    • Author(s)
      Shibata Kensuke、Shimizu Takashi、Nakahara Mashio、Ito Emi、Legoux Francois、Fujii Shotaro、Yamada Yuka、Furutani-Seiki Makoto、Lantz Olivier、Yamasaki Sho、Watarai Masahisa、Shirai Mutsunori
    • Journal Title

      Life Science Alliance

      Volume: 5 Issue: 10 Pages: e202201441-e202201441

    • DOI

      10.26508/lsa.202201441

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mucosal-associated invariant T cells have therapeutic potential against ocular autoimmunity2021

    • Author(s)
      Yamana Satoshi、Shibata Kensuke、Hasegawa Eiichi、Arima Mitsuru、Shimokawa Shotaro、Yawata Nobuyo、Takeda Atsunobu、Yamasaki Sho、Sonoda Koh-Hei
    • Journal Title

      Mucosal Immunology

      Volume: 15 Issue: 2 Pages: 351-361

    • DOI

      10.1038/s41385-021-00469-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Agonistic or antagonistic mucosal-associated invariant T (MAIT) cell activity is determined by the 6-alkylamino substituent on uracil MR1 ligands2020

    • Author(s)
      Braganza Chriselle D.、Motozono Chihiro、Sonoda Koh-Hei、Yamasaki Sho、Shibata Kensuke、Timmer Mattie S. M.、Stocker Bridget L.
    • Journal Title

      Chemical Communications

      Volume: in press Issue: 39 Pages: 529-5294

    • DOI

      10.1039/d0cc00247j

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 粘膜関連T細胞が認識するガン由来抗原の同定2023

    • Author(s)
      柴田健輔
    • Organizer
      ITAM workshop
    • Related Report
      2022 Research-status Report
  • [Presentation] 細胞内寄生性病原細菌Francisella tularensisは代謝経路を変化させることで適応免疫から回避する2022

    • Author(s)
      柴田健輔
    • Organizer
      第51回日本免疫学会
    • Related Report
      2022 Research-status Report
  • [Presentation] MAIT細胞は自己免疫性眼疾患に対して治療効果を有する2022

    • Author(s)
      柴田健輔
    • Organizer
      EMBO workshop
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Mucosal-associated invariant T cells have therapeutic potential against autoimmune uveitis.2021

    • Author(s)
      Kensuke Shibata
    • Organizer
      第50回日本免疫学会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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