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Exploring a novel therapy for canine malignant melanoma by targeting ROCK signalling

Research Project

Project/Area Number 21K20614
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0605:Veterinary medical science, animal science, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Takahashi Yosuke  東京大学, 大学院農学生命科学研究科(農学部), 特任研究員 (50912549)

Project Period (FY) 2021-08-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords犬悪性黒色腫 / 転移 / 腫瘍 / 犬 / 悪性黒色腫 / 悪性腫瘍 / ROCK / ポドプラニン / Rho kinase / 分子標的薬 / Rho-associated kinase
Outline of Research at the Start

犬悪性黒色腫は極めて転移性が高く、効果的な全身療法がないため、外科手術で病変を切除しても、その後、転移し、予後は1年前後と短い。申請者は、犬悪性黒色腫の予後と関連する分子として、ポドプラニン (PDPN)を同定し、その下流シグナルであるRho-associated kinase(ROCK)の阻害薬により、細胞株の増殖・運動能が低下することを発見した。さらに、ROCK阻害薬には既存薬が存在することから、ドラッグリポジッショニングできることを着想した。本研究では、それらの知見に基づき、ROCKを標的とした犬悪性黒色腫に対する新規全身療法の検証を行う。

Outline of Final Research Achievements

Canine malignant melanoma is a metastatic tumor and, due to the lack of effective systemic therapy, even after surgical resection of the lesion, the disease subsequently metastasises and the prognosis is short - less than one year - and therefore the establishment of a new systemic therapy is required. In this study, we identified PDPN-Rho-ROCK as a novel metastatic mechanism of canine malignant melanoma and elucidated its detailed signalling mechanism. Furthermore, we found that inhibition of PDPN-Rho-ROCK signalling in canine malignant melanoma cell lines can reduce the metastatic potential. Therefore, we have shown that inhibitors of the PDPN-Rho-ROCK signalling pathway may be useful in the development of new systemic therapies for canine malignant melanoma.

Academic Significance and Societal Importance of the Research Achievements

犬の悪性黒色腫はとくに口腔内に発生が多く、口腔腫瘍の中で最も発生頻度が高い。大部分の症例が外科手術や放射線療法等の局所療法を行っても早期のリンパ節転移や肺転移のために、発症後1年以内に死に至る。現状では、犬において有効な化学療法や免疫療法がなく、全身投与により転移細胞を死滅させることが可能な、新たな治療法の開発が切望されている。本研究では、犬悪性黒色腫において、PDPN-Rho-ROCKシグナルが転移機構に関与しており、その阻害薬が新たな全身療法の確立に有用である可能性を示した。

Report

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

    (8 results)

All 2023 2022 2021 Other

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

  • [Journal Article] Podoplanin Drives Amoeboid Invasion in Canine and Human Mucosal Melanoma2023

    • Author(s)
      Shinada Masahiro、Kato Daiki、Motegi Tomoki、Tsuboi Masaya、Ikeda Namiko、Aoki Susumu、Iguchi Takaaki、Li Toshio、Kodera Yuka、Ota Ryosuke、Hashimoto Yuko、Takahashi Yosuke、Chambers James、Uchida Kazuyuki、Kato Yukinari、Nishimura Ryohei、Nakagawa Takayuki
    • Journal Title

      Molecular Cancer Research

      Volume: 21 Issue: 11 Pages: 1205-1219

    • DOI

      10.1158/1541-7786.mcr-22-0929

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Podoplanin promotes cell proliferation, survival, and migration of canine non-tonsillar squamous cell carcinoma2023

    • Author(s)
      SHINADA Masahiro、KATO Daiki、TSUBOI Masaya、IKEDA Namiko、AOKI Susumu、IGUCHI Takaaki、LI Toshio、KODERA Yuka、OTA Ryosuke、KOSEKI Shoma、SHIBAHARA Hayato、TAKAHASHI Yosuke、HASHIMOTO Yuko、CHAMBERS James K、UCHIDA Kazuyuki、NOGUCHI Shunsuke、KATO Yukinari、NISHIMURA Ryohei、NAKAGAWA Takayuki
    • Journal Title

      Journal of Veterinary Medical Science

      Volume: 85 Issue: 10 Pages: 1068-1073

    • DOI

      10.1292/jvms.23-0062

    • ISSN
      0916-7250, 1347-7439
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression of podoplanin in various types of feline tumor tissues2021

    • Author(s)
      KAMOTO Satoshi、SHINADA Masahiro、KATO Daiki、TSUBOI Masaya、YOSHIMOTO Sho、YOSHITAKE Ryohei、ETO Shotaro、IKEDA Namiko、TAKAHASHI Yosuke、HASHIMOTO Yuko、CHAMBERS James、UCHIDA Kazuyuki、YAMADA Shinji、KANEKO Mika K.、NISHIMURA Ryohei、KATO Yukinari、NAKAGAWA Takayuki
    • Journal Title

      Journal of Veterinary Medical Science

      Volume: 83 Issue: 11 Pages: 1795-1799

    • DOI

      10.1292/jvms.20-0608

    • NAID

      130008119831

    • ISSN
      0916-7250, 1347-7439
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Podoplanin expressed on cancer-associated fibroblasts inhibited anti-tumor immune response2023

    • Author(s)
      Shoma Koseki, Masahiro Shinada, Daiki Kato, Namiko Ikeda, Susumu Aoki, Takaaki Iguchi, Shiyu Qin, Ryosuke Ota, Hayato Shibahara, Takahiro Kako, Yuko Hashimoto, Yosuke Takahashi, Naohiro Takahashi, Yukinari Kato, James Chambers, Kazuyuki Uchida, Nagaharu Tsukiji, Katsue Suzuki-Inoue, Ryohei Nishimura, Takayuki Nakagawa
    • Organizer
      Veterinary Cancer Society Annual Conference 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] イヌ悪性黒色腫のPDPN-ROCKシグナルを標的とした新たな分子標的治療の検証2022

    • Author(s)
      品田真央、加藤大貴、池田凡子、李捷生、小寺優佳、青木督、太田崚介、高橋洋介、橋本裕子、坪井誠也、チェンバーズジェームズ、内田和幸、加藤幸成、西村亮平、中川貴之.
    • Organizer
      第25回日本獣医がん学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 犬悪性黒色腫に対する抗ポドプラニン抗体を用いた分子標的治療の開発2022

    • Author(s)
      嘉本諭、加藤大貴、品田真央、坪井誠也、池田凡子、青木督、小寺優佳、李捷生、太田崚介、高橋洋介、橋本裕子、チェンバーズジェームズ、内田和幸、金子美華、西村亮平、加藤幸成、中川貴之
    • Organizer
      第25回日本獣医がん学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] Podoplanin promotes the tumor growth of canine malignant melanoma via Rho-associated kinase signals2021

    • Author(s)
      Masahiro Shinada, Daiki Kato, Namiko Ikeda, Toshio Li, Yuka Kodera, Masaya Tsuboi, James Chambers, Kazuyuki Uchida, Yukinari Kato, Ryohei Nishimura, Takayuki Nakagawa.
    • Organizer
      第80回日本癌学会学術総会
    • Related Report
      2021 Research-status Report
  • [Remarks] 東京大学大学院 農学生命科学研究科 獣医外科学研究室ホームページ

    • URL

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

    • Related Report
      2023 Annual Research Report

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Published: 2021-10-22   Modified: 2025-01-30  

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