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Ultrasound-assisted intravesical chemotherapy

Research Project

Project/Area Number 19K15971
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 42020:Veterinary medical science-related
Research InstitutionHokkaido University

Principal Investigator

Sasaki Noboru  北海道大学, 獣医学研究院, 助教 (00754532)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsソノポレーション / 膀胱注入療法 / ピラルビシン / 非筋層浸潤膀胱癌 / マイクロバブル / 超音波 / 超音波治療 / ドラッグデリバリー / がん治療
Outline of Research at the Start

獣医療および人医療の双方において、膀胱癌に対する新規の低侵襲局所治療法の開発が望まれている。超音波と微小気泡を用いるドラッグデリバリー法「ソノポレーション」は低侵襲かつ腫瘍選択的な治療が可能として、長年臨床応用が期待されてきた。本研究では犬の膀胱癌の新規局所治療法として膀胱内ソノポレーション治療を開発する。「デリバリーの定量」を柱に、まず生体を模倣した3次元培養での治療条件を検討する。続いて正常犬を用い、膀胱内ソノポレーションによる血中ならびに組織中の抗がん剤濃度の定量を行い、治療の安全を担保する。最適化と安全性を十分に吟味した上で、臨床応用を目指す。

Outline of Final Research Achievements

Intravesical chemotherapy after transurethral resection is a treatment option in patients with non-muscle invasive bladder cancer. The efficacy of intravesical chemotherapy is determined by cellular uptake of intravesical drugs. Therefore, drug delivery technologies in the urinary bladder are promising tools for enhancing the efficacy of intravesical chemotherapy. Ultrasound-triggered microbubbles cavitation may enhance the permeability of urothelium and thus may have a potential as a drug delivery technology in the urinary bladder.The aim of this preliminary safety study was to assess the systemic absorption of an intravesical drug that was delivered by ultrasound-triggered microbubble cavitation in the urinary bladder of normal dogs. The combination of ultrasound and microbubbles did not increase the plasma concentration of intravesical pirarubicin. Tissue pirarubicin concentration in the sonicated region was higher than that of the non-sonicated region in two of three dogs.

Academic Significance and Societal Importance of the Research Achievements

本研究により、抗がん剤の膀胱内注入療法に超音波と小さな気泡によるドラッグデリバリー法を組み合わせでも、抗がん剤による全身的な副作用を生じないことが示された。同時に、膀胱内に注入された抗がん剤がドラッグデリバリー法によって、より高濃度でがん組織に作用する可能性が示唆された。これらの結果から、超音波と小さな気泡によるドラッグデリバリー法は膀胱癌の標準治療の1つである抗がん剤の膀胱内注入療法の効果を安全に高める方法と証明できたと考えられる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (5 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] Inserm U1253, Imagerie & Cerveau(フランス)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Beter Encapsulates(オランダ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Inserm U1253/Imagerie & Cerveau(フランス)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Bether Encapsulates(オランダ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] UMR 1253 iBrain, Inserm(フランス)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Safety Assessment of Ultrasound-Assisted Intravesical Chemotherapy in Normal Dogs: A Pilot Study2022

    • Author(s)
      Sasaki Noboru、Ikenaka Yoshinori、Aoshima Keisuke、Aoyagi Teiichiro、Kudo Nobuki、Nakamura Kensuke、Takiguchi Mitsuyoshi
    • Journal Title

      Frontiers in Pharmacology

      Volume: 13 Pages: 837754-837754

    • DOI

      10.3389/fphar.2022.837754

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] New Development of Ultrasonic Cancer Therapy2020

    • Author(s)
      KONDO TAKASHI、SUZUKI RYO、SASAKI NOBORU、TAKIGUCHI MITSUYOSHI
    • Journal Title

      Thermal Medicine

      Volume: 36 Issue: 3 Pages: 75-90

    • DOI

      10.3191/thermalmed.36.75

    • NAID

      130007937542

    • ISSN
      1882-2576, 1882-3750
    • Year and Date
      2020-09-25
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Endotherial cells, first target of drug delivery using microbubble-assisted ultrasound2020

    • Author(s)
      Antonie Presset, Corentin Bonneau, Sasaoka Kazuyoshi, Lydie Nadal-Desbarats, Mituyoshi Takiguchi, Ayache Bouakaz, Nobuki Kudo, Jean-Michel Escoffre, Noboru Sasaki
    • Journal Title

      Ultrasound in Medicine and Biology

      Volume: - Issue: 7 Pages: 1565-1583

    • DOI

      10.1016/j.ultrasmedbio.2020.03.013

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Ultrasound-assisted intravesical chemotherapy: preliminary safety results in a dog model2022

    • Author(s)
      Noboru Sasaki, Nobuki Kudo, Kensuke Nakamura, Mitsuyoshi Takiguchi
    • Organizer
      27th European Symposium on Ultrasound Contrast Imaging
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 超音波と気泡を併用する膀胱内注入療法の犬における安全性検討2021

    • Author(s)
      佐々木東、青柳貞一郎、池中良徳、工藤信樹、中村健介、滝口満喜
    • Organizer
      日本超音波医学会第94回学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 超音波診断装置と超音波造影剤による膀胱癌治療法の開発2021

    • Author(s)
      佐々木東、池中良徳、青島圭佑、青柳貞一郎、工藤信樹、中村健介、滝口満喜
    • Organizer
      日本超音波医学会第51回北海道地方会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 表在細胞への送達と限界・頭頸部癌と膀胱癌2019

    • Author(s)
      佐々木東、工藤信樹、Chrit Moonen、滝口満喜
    • Organizer
      第18回日本超音波治療研究会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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