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Impacts of central tolerance against tumor antigen on anti-tumor immune responses

Research Project

Project/Area Number 20K21537
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 50:Oncology and related fields
Research InstitutionChiba University

Principal Investigator

Kimura Motoko  千葉大学, 大学院医学研究院, 教授 (00345018)

Project Period (FY) 2020-07-30 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2020: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywords中枢性免疫寛容 / 抗腫瘍免疫 / 胸腺 / がん抗原 / 腫瘍微小環境
Outline of Research at the Start

本研究は、抗腫瘍免疫応答の問題点である「がんへの免疫寛容の成立」に焦点を当てた芽生え期の研究である。これまであまり研究が進んでいない「がん抗原に対する中枢性免疫寛容」が、がんへの免疫応答へ及ぼす影響を解析することを目的としている。末梢の樹状細胞のなかには、胸腺に移動して末梢抗原を胸腺で提示するものが存在することが報告された。この点に着目し、本研究では、胸腺へと運ばれたがん抗原に対する中枢性免疫寛容の成立が、がんへの免疫応答へ及ぼす影響を解析する。この研究の成果は、将来的には、より効果が高く持続性のあるがん免疫療法の開発に繋がると考えられる。

Outline of Final Research Achievements

Our body has a great immune system to attack cancer; however, our immune system often become exhausted, allowing cancer development. Cancer immunotherapy utilizes this phenomenon and boosts our immune system to attack cancer. Therefore, it would be very important to understand the mechanism why our immune system become tolerant to cancer. Most research has focused on immune responses in tumor microenvironment, whereas we think it is essential to know how our immune system respond to cancer in our whole body. In this study, we focused on central tolerance against cancer. We first analyzed the thymus of tumor bearing mice and found that a specific subset of dendritic cells (DCs) was increased in the thymus. Importantly, the DC subset seemed to be migrated from the tumor site and bring tumor antigens to the thymus. We are currently performing an RNA-seq analysis to figure out the characteristic features of this specific DCs and analyzing the outcome of thymocyte development.

Academic Significance and Societal Importance of the Research Achievements

昨今の腫瘍に対する免疫療法の開発は目覚ましい。特に、免疫チェックポイント阻害剤の驚異的な効果から、患者自身の免疫システムを活性化することにより腫瘍を攻撃する「免疫療法」は、今後、さらに大きく発展する可能性を秘めている。本研究成果は、抗腫瘍免疫応答の問題点である「がんへの免疫寛容の成立」機構のうち、これまであまり研究が進んでいない「がん抗原に対する中枢性免疫寛容」が、がんへの免疫応答へ及ぼす影響について解析した。とくに胸腺機能が活発な小児のがんに対する治療戦略を考える上で、重要な知見が得られた。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (14 results)

All 2022 2021 2020 Other

All Journal Article (9 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 4 results) Remarks (1 results)

  • [Journal Article] IFNγ suppresses the expression of GFI1 and thereby inhibits Th2 cell proliferation2021

    • Author(s)
      Sarkar Murshed H.、Yagi Ryoji、Endo Yukihiro、Koyama-Nasu Ryo、Wang Yangsong、Hasegawa Ichita、Ito Toshihiro、Junttila Ilkka S.、Zhu Jinfang、Kimura Motoko Y.、Nakayama Toshinori
    • Journal Title

      PLOS ONE

      Volume: 16 Issue: 11 Pages: e0260204-e0260204

    • DOI

      10.1371/journal.pone.0260204

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Myosin Light Chain 9/12 Regulates the Pathogenesis of Inflammatory Bowel Disease2021

    • Author(s)
      Yokoyama Masaya、Kimura Motoko Y.、Ito Toshihiro、Hayashizaki Koji、Endo Yukihiro、Wang Yangsong、Yagi Ryoji、Nakagawa Tomoo、Kato Naoya、Matsubara Hisahiro、Nakayama Toshinori
    • Journal Title

      Frontiers in Immunology

      Volume: 11

    • DOI

      10.3389/fimmu.2020.594297

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] CD4+ T cells in inflammatory diseases: pathogenic T-helper cells and the CD69-Myl9 system2021

    • Author(s)
      Nakayama Toshinori、Hirahara Kiyoshi、Kimura Motoko Y、Iwamura Chiaki、Kiuchi Masahiro、Kokubo Kota、Onodera Atsushi、Hashimoto Kahoko、Motohashi Shinichiro
    • Journal Title

      International Immunology

      Volume: 33(12) Issue: 12 Pages: 699-704

    • DOI

      10.1093/intimm/dxab053

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] NKT細胞の新たな分化機構2021

    • Author(s)
      木村元子
    • Journal Title

      炎症と免疫

      Volume: 29 Pages: 288-291

    • Related Report
      2021 Annual Research Report
  • [Journal Article] 胸腺内iNKT細胞分化機構とCD69の役割2021

    • Author(s)
      木村元子
    • Journal Title

      血液内科

      Volume: 82

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
  • [Journal Article] Essential Role for CD30-Transglutaminase 2 Axis in Memory Th1 and Th17 Cell Generation2020

    • Author(s)
      Suzuki Akane S.、Yagi Ryoji、Kimura Motoko Y.、Iwamura Chiaki、Shinoda Kenta、Onodera Atsushi、Hirahara Kiyoshi、Tumes Damon J.、Koyama-Nasu Ryo、Iismaa Siiri E.、Graham Robert M.、Motohashi Shinichiro、Nakayama Toshinori
    • Journal Title

      Frontiers in Immunology

      Volume: 11 Pages: 1536-1536

    • DOI

      10.3389/fimmu.2020.01536

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Activated invariant natural killer T cells directly recognize leukemia cells in a CD1d‐independent manner2020

    • Author(s)
      Aoki Takahiro、Takami Mariko、Takatani Tomozumi、Motoyoshi Kiwamu、Ishii Ayana、Hara Ayaka、Toyoda Takahide、Okada Reona、Hino Moeko、Koyama‐Nasu Ryo、Kiuchi Masahiro、Hirahara Kiyoshi、Kimura Motoko Y.、Nakayama Toshinori、Shimojo Naoki、Motohashi Shinichiro
    • Journal Title

      Cancer Science

      Volume: 111 Issue: 7 Pages: 2223-2233

    • DOI

      10.1111/cas.14428

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Differentiation of Pathogenic Th17 Cells Is Negatively Regulated by Let-7 MicroRNAs in a Mouse Model of Multiple Sclerosis2020

    • Author(s)
      Angelou Constance C.、Wells Alexandria C.、Vijayaraghavan Jyothi、Dougan Carey E.、Lawlor Rebecca、Iverson Elizabeth、Lazarevic Vanja、Kimura Motoko Y.、Peyton Shelly R.、Minter Lisa M.、Osborne Barbara A.、Pobezinskaya Elena L.、Pobezinsky Leonid A.
    • Journal Title

      Frontiers in Immunology

      Volume: 10 Pages: 3125-3125

    • DOI

      10.3389/fimmu.2019.03125

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] T細胞性免疫のエフェクタ-機能のメカニズム 生体防御におけるT細胞の機能2020

    • Author(s)
      中山俊憲、木村元子、八木良二
    • Journal Title

      基礎免疫学 原著第6版ー免疫系の機能とその異常

      Volume: - Pages: 111-127

    • Related Report
      2020 Research-status Report
  • [Presentation] 多彩な働きをするT細胞の分化・機能と疾患制御2022

    • Author(s)
      木村元子
    • Organizer
      第6回 千葉大学 膜タンパク質研究センター×量子科学技術研究開発機構 量子生命科学研究所 合同勉強会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] CD69 regulates anti-tumor immunity2021

    • Author(s)
      Kimura M., Nasu R., Mita Y., Wang Y., Endo Y., Hasegawa I., Motohashi S., Nakayama T.
    • Organizer
      The 50th Annual Meeting of the Japanese Society for Immunology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] CD69-Myl9システムと炎症制御2021

    • Author(s)
      木村元子, 横山将也, 小林弘信, 林﨑浩史, 遠藤将大, Wang Yangsong, 長谷川一太, 那須亮, 中山俊憲
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] CD69 Biology and Pathology2020

    • Author(s)
      Kimura M.Y., Koyama-Nasu, R., Mita Y., Hayashizaki, K. and Nakayama T.
    • Organizer
      11th International Symposium of IFReC, Immunology at the Forefront
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] 千葉大学大学院医学研究院 免疫発生学HP

    • URL

      https://www.m.chiba-u.ac.jp/class/meneki/jisseki/index.html

    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-08-03   Modified: 2023-01-30  

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