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Clinical study to evaluate the IDO1 inhibitor therapy in canine bladder cancer

Research Project

Project/Area Number 22K20609
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

Ikeda Namiko  東京大学, 大学院農学生命科学研究科(農学部), 特任研究員 (60967339)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords犬膀胱癌 / IDO1 / アミノ酸代謝 / トリプトファン代謝 / 腫瘍免疫学 / キヌレニン / 腫瘍 / がん免疫療法 / 獣医腫瘍免疫学 / 免疫療法 / 膀胱癌 / 犬 / 固形腫瘍 / トリプトファン / T細胞 / 抗腫瘍免疫
Outline of Research at the Start

本研究では、申請者が臨床検体の解析により見出した犬膀胱癌の新規治療標的IDO1に対する阻害薬を犬膀胱癌の臨床例に投与し、腫瘍径の変化および副作用の検証を行い、IDO1阻害療法の有効性と安全性を評価する。さらに、IDO1治療を受けた症例のサンプルを採取し、臨床的な治療効果との相関を評価することで、抗腫瘍機序の解明と治療効果予測バイオマーカーの確立を目的とした研究である。

Outline of Final Research Achievements

Canine bladder cancer is a malignant tumor at the lower urinary tract. Even after surgery and medical therapy, most cases cause local recurrence or distant metastasis, leading to death within 1-2 years of tumor onset.
In this study, a clinical trial of an inhibitory against indoleamine 2,3-dioxygenase 1 (IDO1), an amino acid metabolising enzyme discovered by the principal investigator of this grant as a new therapeutic target for canine bladder cancer, was conducted at the Department of Surgery, University of Tokyo, Veterinary Medical Centre, and succeeded in demonstrating that the IDO1 inhibitor therapy is effective in canine bladder cancer and has potential as a new systemic therapy.

Academic Significance and Societal Importance of the Research Achievements

犬膀胱癌は予後が悪く、新たな全身療法の確立が求められている。本研究では少数例であるが臨床試験を実施し、犬膀胱癌に対するIDO1阻害療法の臨床的な有効性の実証に成功し、IDO1阻害療法が犬膀胱癌の予後を改善する新たな全身療法となる可能性を実証した。
さらに、IDO1は犬膀胱癌以外の犬悪性腫瘍においても発現しており、また各種ヒト悪性腫瘍においても発現していることから、本研究成果は獣医学領域および医学領域における発展性を有し、その価値は大きい。

Report

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

    (9 results)

All 2024 2023 2022 Other

All Presentation (6 results) (of which Int'l Joint Research: 3 results) Book (2 results) Remarks (1 results)

  • [Presentation] Indoleamine 2,3-dioxygenase 1 (IDO1) inhibitor demonstrated clinical efficacy in dogs with urothelial carcinoma2024

    • Author(s)
      Takaaki Iguchi , Namiko Ikeda , Daiki Kato , Susumu Aoki , Shiyu Qin, Ryosuke Ohata, Shoma Koseki, Hayato Shibahara , Takahiro Kako , Yuko Hashimoto , Yosuke Takahashi , Naohiro Takahashi , James Chambers , Kazuyuki Uchida , Ryohei Nishimura , Takayuki Nakagawa
    • Organizer
      World Veterinary Cancer Congress
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of the synergistic effect of anti-PD-L1 antibody and IDO1 inhibitor in canine urothelial carcinoma cell lines2024

    • Author(s)
      Ryosuke Ota, Daiki Kato*, Namiko Ikeda, Susumu Aoki, Takaaki Iguchi, Shiyu Qin, Shoma Koseki, Hayato Shibahara, Takahiro Kako, Naoya Maekawa, Tomohiro Okagawa, Satoru Konnai, Ryohei Nishimura, Takayuki Nakagawa
    • Organizer
      World Veterinary Cancer Congress
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Indoleamine 2,3-dioxygenase 1 (IDO1) inhibitor showed tumor reduction in dogs with urothelial carcinoma2023

    • Author(s)
      Takaaki Iguchi, Namiko Ikeda, Daiki Kato, Susumu Aoki, Qin Shiyu, Ryosuke Ohata, Shoma Koseki, Hayato Shibahara, Takahiro Kako, Yuko Hashimoto, Yousuke Takahashi, Naohiro Takahashi, James Chambers, Kazuyuki Uchida , Ryohei Nishimura, Takayuki Nakagawa.
    • Organizer
      The 11th SaSSOH
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] インドールアミン2,3ジオキシゲナーゼ1(IDO-1)阻害薬は犬膀胱癌症例に対して抗腫瘍効果を示した2023

    • Author(s)
      井口貴瑛, 池田凡子, 加藤大貴, 青木督, 秦詩雨, 太田峻介, 小関翔馬, 柴原隼人, 加古貴大, 橋本裕子, 高橋洋介, 髙橋尚大, チェンバーズ・ジェームズ, 内田和幸, 西村亮平, 中川貴之
    • Organizer
      第28回日本獣医がん学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Indoleamine 2,3-dioxygenase 1 (IDO1) inhibitor demonstrates antitumor effect in dogs with naturally occurring urothelial carcinoma2023

    • Author(s)
      Takaaki Iguchi, Namiko Ikeda, Daiki Kato, Susumu Aoki, Qin Shiyu1, Ryosuke Ohata, Shoma Koseki, Hayato Shibahara, Takahiro Kako, Yuko Hashimoto, Yousuke Takahashi , Naohiro Takahashi , James Chambers , Kazuyuki Uchida, Ryohei Nishimura, Takayuki Nakagawa
    • Organizer
      第82回日本癌学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 犬自然発がんモデルにおけるmicroRNA網羅解析の臨床応用とトランスレーショナル研究2022

    • Author(s)
      池田凡子
    • Organizer
      第4回 ヒトと伴侶動物の比較医学研究会
    • Related Report
      2022 Research-status Report
  • [Book] 犬のがん早期診断のためのリキッドバイオプシー ―いまとこれから― (JONCOL; Japanese Journal of Clinical Oncology)2022

    • Author(s)
      池田凡子, 落谷孝広, 伊藤博
    • Total Pages
      6
    • Publisher
      ファームプレス
    • Related Report
      2022 Research-status Report
  • [Book] 獣医複合免疫療法の未来 (JONCOL; Japanese Journal of Clinical Oncology)2022

    • Author(s)
      加藤大貴, 池田凡子, 西村亮平, 中川貴之
    • Total Pages
      6
    • Publisher
      ファームプレス
    • Related Report
      2022 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 2022 Research-status Report

URL: 

Published: 2022-09-01   Modified: 2025-01-30  

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