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Optimization of tumor-infiltrating of cytotoxic T cells using capacity of the anti-mesenchymal tumor stromal cells of CD8+ T cell exosomes

Research Project

Project/Area Number 18K19474
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

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

Principal Investigator

Seo Naohiro  三重大学, 医学系研究科, 産学官連携講座講師 (50283354)

Project Period (FY) 2018-06-29 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Keywords細胞外小胞 / エクソソーム / がん / がん間質 / がん関連線維芽細胞 / 間葉系幹細胞 / CAR-T細胞 / がん細胞 / がん間質細胞 / がん実質 / 細胞傷害性T細胞 / 免疫細胞療法 / がん免疫 / CD8+ T細胞
Outline of Final Research Achievements

Administration of normal CD8+ T cell exosomes to tumor lesions showed no dramatic improvement in T cell infiltration of tumor. We decided to conduct an experiment using exosomes obtained from the culture supernatant of CAR-T cells that had been given specificity to the tumor cells. It was revealed that CAR-T cell exosomes have a dual cytotoxic function of CAR-specific tumor cells as well as stromal cells such as CAF and MSC. CAR-T cell exosomes have a possibility to be an effective adjuvant for modulating tumor microenvironment in T cell therapy, and we are currently conducting research.

Academic Significance and Societal Importance of the Research Achievements

がん組織は、がん細胞からなるがん実質とがん関連線維芽細胞(CAF)や間葉系幹細胞(MSC)などからなるがん間質からなり、それらが、どのように協調しがん組織を形成し、抗腫瘍免疫応答に対する回避機構を獲得しているのかについては、未だ変わらないことが多い。本研究は、非特異的なCD8+ T細胞エクソソームからがん細胞に特異的なCAR-T細胞の放出するエクソソームへと使用するエクソソームを変更したが、エクソソームのがん間質細胞に取り込まれやすい性質は、がんの微小環境の理解を深めることはもちろん、がん治療の補助剤としての利用価値もあり、学術的にも社会的にも重要だと考えている。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (13 results)

All 2020 2019 2018

All Journal Article (7 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (5 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Skin inflammation and testicular function: Dermatitis causes male infertility via skin-derived cytokines.2020

    • Author(s)
      A Umeda, H Takeuchi, K Mizutani, N Seo, Y matsushima, K Habe, K Hagimori, Y yamaguchi, T Ikeda, K Yamanaka
    • Journal Title

      Biomedicines

      Volume: 8 Issue: 9 Pages: 1278-1294

    • DOI

      10.3390/biomedicines8090293

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Antigen delivery targeted to tumor-associated macrophages overcomes tumor immune resistance2019

    • Author(s)
      Muraoka Daisuke、Seo Naohiro、Hayashi Tae、Tahara Yoshiro、Fujii Keisuke、Tawara Isao、Miyahara Yoshihiro、Okamori Kana、Yagita Hideo、Imoto Seiya、Yamaguchi Rui、Komura Mitsuhiro、Miyano Satoru、Goto Masahiro、Sawada Shin-ichi、Asai Akira、Ikeda Hiroaki、Akiyoshi Kazunari、Harada Naozumi、Shiku Hiroshi
    • Journal Title

      Journal of Clinical Investigation

      Volume: 129 Issue: 3 Pages: 1278-1294

    • DOI

      10.1172/jci97642

    • NAID

      120006987781

    • Related Report
      2019 Research-status Report 2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Activated CD8+ T cell extracellular vesicles prevent tumour progression by targeting of lesional mesenchymal cells2018

    • Author(s)
      Seo Naohiro、Shirakura Yoshitaka、Tahara Yoshiro、Momose Fumiyasu、Harada Naozumi、Ikeda Hiroaki、Akiyoshi Kazunari、Shiku Hiroshi
    • Journal Title

      Nature Communications

      Volume: 9 Issue: 1 Pages: 435-435

    • DOI

      10.1038/s41467-018-02865-1

    • NAID

      120006532079

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Exosome-mediated regulation of tumor immunology2018

    • Author(s)
      N Seo, K Akiyoshi, H Shiku
    • Journal Title

      Cancer Science

      Volume: 109 Issue: 10 Pages: 2998-3004

    • DOI

      10.1111/cas.13735

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Antitumor activity of CAR-T cells targeting the intracellular oncoprotein WT1 can be enhanced by vaccination.2018

    • Author(s)
      Akahori Y, Wang L, Yoneyama M, Seo N, Okumura S, Miyahara Y, Amaishi Y, Okamoto S, Mineno J, Ikeda H, Maki T, Fujiwara H, Akatsuka Y, Kato T, Shiku H.
    • Journal Title

      Blood. 2018 Sep 13;132(11):

      Volume: 132 Issue: 11 Pages: 1134-1145

    • DOI

      10.1182/blood-2017-08-802926

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 活性化CD8+ T細胞から放出されるエクソソームはがん間質の間葉系細胞に働きかけ、がんの進行を抑制する2018

    • Author(s)
      瀬尾尚宏、珠玖洋
    • Journal Title

      実験医学(羊土社)

      Volume: 36 Pages: 1894-1897

    • Related Report
      2018 Research-status Report
  • [Journal Article] 免疫疾患におけるエクソソーム(細胞外小胞顆粒と疾患)2018

    • Author(s)
      瀬尾尚宏
    • Journal Title

      最新医学

      Volume: 73 Pages: 1196-1202

    • Related Report
      2018 Research-status Report
  • [Presentation] Cytotoxic T Lymphocyte EV that Prevents Tumor Metastasis by Collapse of Tumoral Mesenchymal Stroma is classified into Exosome, but not Microvesicle or Apoptotic Body2020

    • Author(s)
      Naohiro Seo, Junko Nakamura, Tsuguhiro Kaneda, Takanori Ichiki, Asako Shimoda, Kazunari Akiyoshi, Hiroshi Shiku
    • Organizer
      ISEV 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Only a portion of the T cell-released exosomes has a capacity to destruct mesenchymal tumor stroma2019

    • Author(s)
      N. Seo, Ts. Kaneda, J. Nakamura, F. Momose, K. Akiyoshi, Hiroshi Shiku1
    • Organizer
      ISEV 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Only a portion of the T cell-released exosomes has a capacity to destruct mesenchymal tumor stroma2019

    • Author(s)
      N Seo, T Kaneda, J Nakamura, K Akiyoshi, H Shiku
    • Organizer
      ISEV2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] T細胞エクソソームと腫瘍微小環境変化2018

    • Author(s)
      瀬尾尚宏
    • Organizer
      第22回日本がん免疫学会総会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Relationship between diversity of CD8+ T cell exosomes and destruction of mesenchymal tumor stroma2018

    • Author(s)
      瀬尾尚宏、金田次弘、中村純子、百瀬文康、秋吉一成、珠玖洋
    • Organizer
      第77回日本癌学会総会
    • Related Report
      2018 Research-status Report
  • [Patent(Industrial Property Rights)] エクソソームの製造方法2018

    • Inventor(s)
      珠玖洋、瀬尾尚宏、金田次弘、中村純子、秋吉一成
    • Industrial Property Rights Holder
      珠玖洋、瀬尾尚宏、金田次弘、中村純子、秋吉一成
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2018-143200
    • Filing Date
      2018
    • Related Report
      2018 Research-status Report

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Published: 2018-07-25   Modified: 2022-01-27  

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