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Novel antibody therapy targeting tumor specific sugar-chain modification in tumor cells and cancer associated fibroblasts

Research Project

Project/Area Number 19K22361
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 42:Veterinary medical science, animal science, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Nishimura Ryohei  東京大学, 大学院農学生命科学研究科(農学部), 教授 (80172708)

Co-Investigator(Kenkyū-buntansha) 加藤 幸成  東北大学, 未来科学技術共同研究センター, 教授 (00571811)
Project Period (FY) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2019: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Keywords犬 / 固形腫瘍 / 抗体療法 / ポドプラニン / 腫瘍関連線維芽細胞 / 犬自然発生腫瘍 / 免疫療法
Outline of Research at the Start

腫瘍に特異的に発現する抗原は、がん治療において重要な治療標的である。これまでに、数多くの抗体療法が試みられてきたが、抗体の腫瘍特異性が十分でなく正常組織に反応してしまうことによる副作用が問題となっている。さらに、固形がんでは腫瘍組織の不均一性のために、腫瘍細胞には効果的でも腫瘍組織全体では十分な効果が得られにくいと考えられる。そこで、本研究では腫瘍組織に過剰発現するポドプラニンの腫瘍特異的糖鎖修飾に対する抗体を用いて、腫瘍細胞および腫瘍間質を構成する腫瘍関連線維芽細胞を標的とした抗体療法のイヌ腫瘍に対する安全性および有効性を検証する。

Outline of Final Research Achievements

Solid tumors are composed of not only tumor cells but also various cells such as blood vessels, immune cells, and cancer-associated fibroblasts (CAF), but a therapy targeting CAF has not yet been established. In this study, we prepared a canine chimeric anti-podoplanin cytotoxic antibody that can simultaneously target CAF and tumor cells, and successfully demonstrated efficacy and safety of this antibody by experiments of canine tumor cell lines, canine tumor inoculated mouse models, and cancer-bearing dog cases. We conducted the clinical trial using this antibody and obtained data suggesting the efficacy and safety of this antibody. In clinical trials involving a small number of dog cases, reactions suggesting antitumor effects were observed without serious side effects, and these data support the further large-scale clinical trials in the future.

Academic Significance and Societal Importance of the Research Achievements

悪性腫瘍は、犬・猫・人において主要な死亡原因であり、その克服は社会的な重要課題である。本研究では、悪性腫瘍のなかでも固形腫瘍に特有の腫瘍関連線維芽細胞および腫瘍細胞を同時に標的にできる抗体療法の安全性および有効性を実証することで、腫瘍治療学の発展に大きく貢献した。また、本研究では症例犬の臨床試験にも成功し、臨床獣医学における新たな腫瘍治療法の基盤となる重要な成果を報告できた。

Report

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

    (9 results)

All 2020 2019 Other

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

  • [Journal Article] PDPN Is Expressed in Various Types of Canine Tumors and Its Silencing Induces Apoptosis and Cell Cycle Arrest in Canine Malignant Melanoma2020

    • Author(s)
      Shinada Masahiro、Kato Daiki、Kamoto Satoshi、Yoshimoto Sho、Tsuboi Masaya、Yoshitake Ryohei、Eto Shotaro、Ikeda Namiko、Saeki Kohei、Hashimoto Yuko、Takahashi Yosuke、Chambers James、Uchida Kazuyuki、Kaneko Mika K.、Fujita Naoki、Nishimura Ryohei、Kato Yukinari、Nakagawa Takayuki
    • Journal Title

      Cells

      Volume: 9 Issue: 5 Pages: 1136-1136

    • DOI

      10.3390/cells9051136

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Phase I/II Clinical Trial of the Anti-Podoplanin Monoclonal Antibody Therapy in Dogs with Malignant Melanoma2020

    • Author(s)
      Kamoto Satoshi、Shinada Masahiro、Kato Daiki、Yoshimoto Sho、Ikeda Namiko、Tsuboi Masaya、Yoshitake Ryohei、Eto Shotaro、Hashimoto Yuko、Takahashi Yosuke、Chambers James、Uchida Kazuyuki、Kaneko Mika K.、Fujita Naoki、Nishimura Ryohei、Kato Yukinari、Nakagawa Takayuki
    • Journal Title

      Cells

      Volume: 9 Issue: 11 Pages: 2529-2529

    • DOI

      10.3390/cells9112529

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Detection of Lion Podoplanin Using the Antitiger Podoplanin Monoclonal Antibody PMab-2312020

    • Author(s)
      Kato Yukinari、Takei Junko、Sano Masato、Asano Teizo、Sayama Yusuke、Uchida Kazuyuki、Nakagawa Takayuki、Kaneko Mika K.
    • Journal Title

      Monoclonal Antibodies in Immunodiagnosis and Immunotherapy

      Volume: 39 Issue: 3 Pages: 91-94

    • DOI

      10.1089/mab.2020.0008

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 犬移行上皮癌における腫瘍免疫微小環境の解析と関連因子の探索2019

    • Author(s)
      衛藤翔太郎, 佐伯亘平, 吉竹涼平, 加藤大貴, 坪井誠也, 吉本翔, 品田真央, 池田凡子, 嘉本諭, James Chambers, 内田和幸, 西村亮平, 中川貴之
    • Organizer
      第19回生命科学シンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] イヌ腫瘍組織におけるPodoplanin発現の解析2019

    • Author(s)
      品田真央、嘉本諭、加藤大貴、坪井誠也、吉本翔、チェンバーズジェームズ、内田和幸、池田凡子 、佐伯亘平、山田慎二、金子美華、西村亮平、加藤幸成、中川貴之
    • Organizer
      第162回日本獣医学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] cancer immunotherapies targeting novel canine solid tumor antigens2019

    • Author(s)
      Kato Daiki, , Nishimura Ryohei, Nakagawa Takayuki.
    • Organizer
      The 1st ToBeST symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Evaluation for antitumor effect and safety of cancer specific anti-canine podoplanin monoclonal antibody.2019

    • Author(s)
      Kamoto S, Kato D, Kiname K, Ikeda N, Yoshimoto S, Tsuboi M, Yoshitake R, Eto S, Shinada M, Uchida K, Yamada S, Kaneko M, Nishimura R, Kato Y, Nakagawa T
    • Organizer
      The 6th Asian Meeting of Animal Medicine Specialties
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Remarks] 東京大学大学院 農学生命科学研究科 獣医外科学研究室ホームページ

    • URL

      http://www.vm.a.u-tokyo.ac.jp/geka/

    • Related Report
      2020 Annual Research Report
  • [Remarks] 東京大学大学院 農学生命科学研究科 獣医外科学研究室

    • URL

      http://www.vm.a.u-tokyo.ac.jp/geka/

    • Related Report
      2019 Research-status Report

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Published: 2019-07-04   Modified: 2022-01-27  

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