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Radioenhancement using ultrasound-stimulated microbubbles and nanoparticles

Research Project

Project/Area Number 21K07643
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionKobe University

Principal Investigator

Nakayama Masao  神戸大学, 医学研究科, 医学研究員 (60582004)

Co-Investigator(Kenkyū-buntansha) 石原 武明  神戸大学, 医学部附属病院, 特命講師 (10546477)
椋本 成俊  神戸大学, 医学部附属病院, 特命助教 (70634278)
Project Period (FY) 2021-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywordsマイクロバブル / 超音波 / 放射線治療 / ナノ粒子 / 放射線増感剤
Outline of Research at the Start

放射線治療は主要ながん治療法の1つであるが、進行癌や放射線抵抗性癌には効果が低いという欠点があり、そのような腫瘍に対しては放射線単独では治癒へ導くことが難しい。そこで放射線の効果を高める放射線増感剤として金属ナノ粒子やマイクロバブルが注目されている。本研究では、金属ナノ粒子とマイクロバブルを組み合わせることにより、これらの放射線増感作用が相乗的に増強するかどうかを検討する。

Outline of Final Research Achievements

This in vitro study demonstrated significant cell-killing effects on pancreatic cancer cells when ultrasound-stimulated microbubbles and X-rays were used in combination. The results suggest that ultrasound-stimulated microbubbles can enhance the therapeutic efficacy of radiation therapy additively, whilst the synergistic dose enhancement effects may be dependent on the cell type and microbubble concentration. However, they did not improve the efficacy of nanoparticle-induced radiosensitisation. As the ultrasound exposure settings used in this study were limited, further studies with different experimental settings are needed to confirm the effects of ultrasound-stimulated microbubbles on radiation therapy and nanoparticles.

Academic Significance and Societal Importance of the Research Achievements

マイクロバブル・超音波照射による放射線増感効果、さらにナノ粒子との併用効果に関する過去の報告数は少なく、その有効性については不明であった。本研究の成果によりマイクロバブル・超音波照射の放射線増感効果の可能性が示されたとともに、新たな課題も明らかになり、今後マイクロバブルを用いたがん放射線治療の研究発展につながると考えられる。

Report

(5 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (8 results)

All 2024 2023 2022 Other

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

  • [Int'l Joint Research] RMIT University(オーストラリア)

    • Related Report
      2024 Annual Research Report
  • [Int'l Joint Research] RMIT University(オーストラリア)

    • Related Report
      2023 Research-status Report
  • [Journal Article] Ultrasound-stimulated Microbubbles for Treatment of Pancreatic Cancer Cells with Radiation and Nanoparticles: In vitro Study2024

    • Author(s)
      Nakayama Masao、Noda Ayaha、Akasaka Hiroaki、Tominaga Takahiro、McCorkell Giulia、Geso Moshi、Sasaki Ryohei
    • Journal Title

      Journal of Medical Physics

      Volume: 49 Issue: 3 Pages: 326-334

    • DOI

      10.4103/jmp.jmp_30_24

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Ultrasound‐stimulated microbubbles to enhance radiotherapy: A scoping review2024

    • Author(s)
      McCorkell Giulia、Piva Terrence、Highgate Declan、Nakayama Masao、Geso Moshi
    • Journal Title

      Journal of Medical Imaging and Radiation Oncology

      Volume: 68 Issue: 6 Pages: 740-769

    • DOI

      10.1111/1754-9485.13740

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] In Vitro Radioenhancement Using Ultrasound-Stimulated Microbubbles: A Comparison of Suspension and Adherent Cell States2023

    • Author(s)
      McCorkell Giulia、Nakayama Masao、Feltis Bryce、Piva Terrence J.、Geso Moshi
    • Journal Title

      Radiation

      Volume: 3 Issue: 3 Pages: 153-164

    • DOI

      10.3390/radiation3030013

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Ultrasound-Stimulated Microbubbles Enhance Radiation-Induced Cell Killing2022

    • Author(s)
      McCorkell Giulia、Nakayama Masao、Feltis Bryce、Piva Terrence、Geso Moshi
    • Journal Title

      Ultrasound in Medicine & Biology

      Volume: 48 Issue: 12 Pages: 2449-2460

    • DOI

      10.1016/j.ultrasmedbio.2022.07.001

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Radiation Dose Enhancement Effects on Pancreatic Cancer Cells by Ultrasound-Stimulated Microbubbles2023

    • Author(s)
      Masao Nakayama, Ayaha Noda, Hiroaki Akasaka, Takahiro Tominaga, Giulia McCorkell, Moshi Geso, Ryohei Sasaki
    • Organizer
      International Conference on Medical Physics (ICMP) 2023
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] マイクロバブル超音波造影剤による放射線治療増感効果の検討2023

    • Author(s)
      中山雅央、野田文葉、赤坂浩亮、富永孝宏、佐々木良平
    • Organizer
      日本放射線腫瘍学会(JASTRO)第36回学術大会
    • Related Report
      2023 Research-status Report

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Published: 2021-04-28   Modified: 2026-01-16  

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