• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of minimally invasive drug delivery system using novel microbubble and high-intensity focused ultrasound (HIFU)

Research Project

Project/Area Number 21K12733
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 90130:Medical systems-related
Research InstitutionWakayama Medical University

Principal Investigator

Ashida Reiko  和歌山県立医科大学, 医学部, 准教授 (90570581)

Co-Investigator(Kenkyū-buntansha) 丸山 一雄  帝京大学, 薬学部, 特任教授 (30130040)
北野 雅之  和歌山県立医科大学, 医学部, 教授 (50314571)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsマイクロバブル / 膵癌 / 超音波 / 高強度集束超音波(HIFU) / キャビテーション / 高強度集束超音波(HIFU) / EPR効果 / 膵臓 / ドラッグデリバリー / 膵がん
Outline of Research at the Start

超音波治療は低侵襲であるが、機器の大型化や乏しい操作性が問題であった。我々は以前より治療用マイクロバブル(MB)を増感剤として用い、超音波治療機器の小型化に取り組んできたが、本研究は前臨床研究としての安全性や更なる有用性を検証することを目的としている。治療用MBを用いて、膵癌担癌マウスモデルにおけるMBと超音波併用療法の有用性に関して基礎的検討を行う。またエラストグラフィなどの特殊超音波技術を用いて、治療効果判定システムを開発する。さらに開発中の超音波内視鏡(EUS)に装着可能な小型HIFU機器(EUS-HIFU)と局所投与が可能な相変化ナノ液滴を用いてEUS-HIFUの治療効果を検討する。

Outline of Final Research Achievements

Our research aims to develop a novel drug delivery system using ultrasound and microbubbles. We aim to utilize ultrasound cavitation and sonoporation to improve the efficiency of drug delivery to tumors and enhance anti-tumor effects. Specifically, we are (a) combining phase change nano-droplets (PCND) with high-intensity focused ultrasound (HIFU) and (b) using novel therapeutic microbubbles and ultrasound to treat pancreatic cancer. As progress, we have demonstrated tissue melting using PCND and small HIFU in pigs and verified the anti-tumor effect of the combination therapy of gemcitabine and microbubbles in cancer-bearing mice, both with favorable results, which were presented at academic conferences and published in papers.

Academic Significance and Societal Importance of the Research Achievements

超音波とマイクロバブル(MB)を用いた新規ドラッグデリバリーシステム(DDS)の開発を目的とし、癌治療の効果を大幅に向上させる可能性を秘めている。学術的意義として、キャビテーションやソノポレーションといった超音波の機械的作用を利用したDDSの効率化は、薬剤の腫瘍への到達率を高め、副作用を低減する新しい治療法の確立に貢献する。社会的意義としては、膵癌などの難治性癌に対する治療効果を向上させることで、患者の生存率を向上させ、治療の負担を軽減することが期待される。特に、相変化ナノ液滴(PCND)とHIFUの併用技術や新規治療用MBを使用した膵癌治療の実証は、臨床応用への道を拓く重要なステップとなる。

Report

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

    (8 results)

All 2024 2023 2021

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

  • [Journal Article] Novel treatment system using endoscopic ultrasound-guided high-intensity focused ultrasound: A proof-of-concept study2024

    • Author(s)
      Ashida Reiko、Kawabata Ken-ichi、Asami Rei、Kitano Masayuki
    • Journal Title

      Pancreatology

      Volume: 24 Issue: 1 Pages: 88-92

    • DOI

      10.1016/j.pan.2023.11.013

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Usefulness of EUS-FNA with contrast-enhanced harmonic imaging for diagnosis of gallbladder tumor2021

    • Author(s)
      Kitano Masayuki、Tamura Takashi、Yamashita Yasunobu、Itonaga Masahiro、Ashida Reiko
    • Journal Title

      Endoscopic Ultrasound

      Volume: 10 Issue: 3 Pages: 224-224

    • DOI

      10.4103/eus-d-20-00112

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Adverse events of endoscopic ultrasound-guided fine-needle aspiration for histologic diagnosis in Japanese tertiary centers: Multicenter retrospective study2021

    • Author(s)
      Kanno Atsushi、Yasuda Ichiro、Irisawa Atsushi、et al.
    • Journal Title

      Digestive Endoscopy

      Volume: 33 Issue: 7 Pages: 1146

    • DOI

      10.1111/den.13912

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Value of contrast‐enhanced harmonic endoscopic ultrasound for diagnosing hepatic metastases of pancreatic cancer: A prospective study2021

    • Author(s)
      Emori Tomoya、Nuta Junya、Kawaji Yuki、Tamura Takashi、Hatamaru Keiichi、Itonaga Masahiro、Yamashita Yasunobu、Ashida Reiko、Shimokawa Toshio、Koike Masataka、Ikoma Akira、Sonomura Tetsuo、Kawai Manabu、Kitano Masayuki
    • Journal Title

      Journal of Gastroenterology and Hepatology

      Volume: 36 Issue: 12 Pages: 3402-3409

    • DOI

      10.1111/jgh.15661

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Value of Low-Mechanical-Index Contrast-Enhanced Transabdominal Ultrasound for Diagnosis of Pancreatic Cancer: A Meta-analysis2021

    • Author(s)
      Yamashita Yasunobu、Shimokawa Toshio、Ashida Reiko、Dietrich Christoph F.、D'Onofrio Mirko、Hirooka Yoshiki、Kudo Masatoshi、Mori Hideaki、Sofuni Atsushi、Kitano Masayuki
    • Journal Title

      Ultrasound in Medicine & Biology

      Volume: 47 Issue: 12 Pages: 3315-3322

    • DOI

      10.1016/j.ultrasmedbio.2021.08.005

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] NOVEL TREATMENT USING COMBINATION OF NEWLY DEVELOPED MICROBUBBLES AND ULTRASOUND TO INCREASE VASCULAR PERMEABILITY OF ANTI-CANCER DRUG2023

    • Author(s)
      Reiko Ashida,Saori KageyamaMasayuki KitanoRyo SuzukiKazuo Maruyama
    • Organizer
      Poster, May, 2023 DDW, Chicago
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Novel treatment using combination of newly developed microbubbles and ultrasound to increase vascular permeability of anti-cancer drug2023

    • Author(s)
      REIKO ASHIDA
    • Organizer
      Digestive Disease Week 2023
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 膵胆道領域における造影USの有用性 膵癌肝転移検出における造影ハーモニックEUSの有用性2021

    • Author(s)
      江守 智哉, 蘆田 玲子, 北野 雅之
    • Organizer
      日本超音波医学会
    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi