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Development of radiosensitized nanoparticles for all cancers using simple and innovative surface-modified DDS

Research Project

Project/Area Number 22K07771
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

Akasaka Hiroaki  神戸大学, 医学研究科, 特命助教(PD) (20707161)

Co-Investigator(Kenkyū-buntansha) 荻野 千秋  神戸大学, 工学研究科, 教授 (00313693)
佐々木 良平  神戸大学, 医学部附属病院, 教授 (30346267)
宮脇 大輔  神戸大学, 医学部附属病院, 特命准教授 (30546502)
中山 雅央  神戸大学, 医学研究科, 医学研究員 (60582004)
椋本 成俊  神戸大学, 医学部附属病院, 特命助教 (70634278)
清水 康之  神戸大学, 医学部附属病院, 特命技術員 (80824234)
Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2024: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2023: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsナノ粒子 / 放射線増感剤 / DDS / MPN / 放射線 / 表面修飾 / 難治腫瘍 / 放射線治療 / 過酸化チタンナノ粒子 / 放射線増感 / 金属ナノ粒子
Outline of Research at the Start

申請者らは放射線と併用することで大量の活性酸素を産生し、放射線増感効果を顕著に増加させる過酸化チタンナノ粒子の開発に成功した。従来の課題であった腫瘍への送達性と生体安全性に対して、申請者らはメルボルン大学のグループが開発したAPS (Antibody Polyphenol System)と呼ばれる技術を応用することで、解決に成功した。本申請において、我々はAPS-過酸化チタンナノ粒子の臨床応用に向け、①多種の抗体に対応したAPSの合成、②各種がん細胞への特異的集積性、③放射線増感効果、④生体安全性の具体的な4課題を評価し、臨床試験を見据えた非臨床試験の準備に取り組む。

Outline of Final Research Achievements

In this study, a novel method for surface functionalization of titanium peroxide nanoparticles with anti-CD44 antibodies was developed to enhance radiation sensitization. Tannic acid was used to non-covalently and efficiently attach the antibodies to the nanoparticles, allowing for versatile molecular interactions. The antibody-functionalized nanoparticles (PPN-PAATiOx) exhibited approximately 2-fold higher affinity for CD44-positive cells in vitro and approximately 2-fold higher affinity in vivo, with enhanced cellular uptake. Tumor accumulation and radiation sensitization were also increased by about 2-fold, leading to a significant 50% inhibition of cancer cell growth (p < 0.05). Moreover, the targeting function was maintained in vivo, demonstrating high efficacy. This method shows promise for precision medicine in cancer therapy and can be extended to other nanomaterials.

Academic Significance and Societal Importance of the Research Achievements

この研究成果の学術的意義は、抗体をナノ粒子表面に効率的に修飾する新手法を確立したことである。この手法は、放射線増感効果を持つナノ粒子の標的化を実現し、がん治療の精密医療に寄与する可能性がある。タンニン酸を利用した抗体の非共有結合的修飾法は、簡便でありながら強力な標的化能力を示し、他のナノ材料にも応用可能と考えられる。
社会的意義としては、この技術ががん治療の新たなアプローチを提供し、放射線治療とナノテクノロジーを組み合わせた治療法を実現する可能性がある。放射線感受性向上により、がん患者の治療効果を高め、副作用の軽減が期待できる。

Report

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

    (16 results)

All 2025 2024 2023 2022

All Journal Article (9 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 9 results,  Open Access: 9 results) Presentation (6 results) (of which Int'l Joint Research: 1 results) Book (1 results)

  • [Journal Article] Improved stoichiometric model for megavoltage computed tomography number conversion and dose calculation within the TomoTherapy delivery system2025

    • Author(s)
      Tsunemine Shogo、Ozawa Shuichi、Nakao Minoru、Miura Hideharu、Onishi Takashi、Ichiki Mamoru、Sugimoto Satoru、Inoue Tatsuya、Oki Yuya、Akasaka Hiroaki、Hanmura Masahiro、Harada Hideyuki、Nishimura Tetsuo、Murakami Yuji、Nagata Yasushi
    • Journal Title

      Physica Medica

      Volume: 132 Pages: 104915~104915

    • DOI

      10.1016/j.ejmp.2025.104915

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Titanium Dioxide-Based Nanoparticles to Enhance Radiation Therapy for Cancer: A Literature Review2024

    • Author(s)
      Nakayama Masao、Akasaka Hiroaki、Sasaki Ryohei、Geso Moshi
    • Journal Title

      Journal of Nanotheranostics

      Volume: 5 Pages: 60~74

    • DOI

      10.3390/jnt5020004

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [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 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] Evaluation of robustness of optimization methods in breast intensity-modulated radiation therapy using TomoTherapy2024

    • Author(s)
      Oki Yuya、Akasaka Hiroaki、Uehara Kazuyuki、Mizonobe Kazufusa、Sawada Masanobu、Nagata Junya、Harada Aya、Mayahara Hiroshi
    • Journal Title

      Physical and Engineering Sciences in Medicine

      Volume: 47 Pages: 465~475

    • DOI

      10.1007/s13246-023-01377-7

    • Related Report
      2024 Annual Research Report 2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Respiratory motion tracking of spine stereotactic radiotherapy in prone position2023

    • Author(s)
      Mizonobe Kazufusa、Akasaka Hiroaki、Uehara Kazuyuki、Oki Yuya、Nakayama Masao、Tamura Shuhei、Munetomo Yoshiki、Kubo Katsumaro、Kawaguchi Hiroki、Harada Aya、Mayahara Hiroshi
    • Journal Title

      Journal of Applied Clinical Medical Physics

      Volume: 23 Pages: 1-10

    • DOI

      10.1002/acm2.13910

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fiducial marker position affects target volume in stereotactic lung irradiation2022

    • Author(s)
      Akasaka Hiroaki、Mizonobe Kazufusa、Oki Yuya、Uehara Kazuyuki、Nakayama Masao、Tamura Shuhei、Munetomo Yoshiki、Kawaguchi Haruna、Ishida Jun、Harada Aya、Ishihara Takeaki、Kubota Hikaru、Kawaguchi Hiroki、Sasaki Ryohei、Mayahara Hiroshi
    • Journal Title

      Journal of Applied Clinical Medical Physics

      Volume: 23 Pages: 1-10

    • DOI

      10.1002/acm2.13596

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Gafchromic? EBT3 Film Measurements of Dose Enhancement Effects by Metallic Nanoparticles for 192Ir Brachytherapy, Proton, Photon and Electron Radiotherapy2022

    • Author(s)
      Sisin Noor Nabilah Talik、Rashid Raizulnasuha Ab、Abdullah Reduan、Razak Khairunisak Abdul、Geso Moshi、Akasaka Hiroaki、Sasaki Ryohei、Tominaga Takahiro、Miura Hayato、Nishi Masashi、Rahman Wan Nordiana
    • Journal Title

      Radiation

      Volume: 2 Pages: 130~148

    • DOI

      10.3390/radiation2010010

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] <i>In vivo</i> stealthified molecularly imprinted polymer nanogels incorporated with gold nanoparticles for radiation therapy2022

    • Author(s)
      Kitayama Yukiya、Yamada Takuya、Kiguchi Kentaro、Yoshida Aoi、Hayashi Shuhei、Akasaka Hiroaki、Igarashi Kazunori、Nishimura Yuya、Matsumoto Yu、Sasaki Ryohei、Takano Eri、Sunayama Hirobumi、Takeuchi Toshifumi
    • Journal Title

      Journal of Materials Chemistry B

      Volume: 10 Pages: 6784~6791

    • DOI

      10.1039/d2tb00481j

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reactive oxygen species-inducing titanium peroxide nanoparticles as promising radiosensitizers for eliminating pancreatic cancer stem cells2022

    • Author(s)
      Salah Mohammed、Akasaka Hiroaki、Shimizu Yasuyuki、Morita Kenta、Nishimura Yuya、Kubota Hikaru、Kawaguchi Hiroki、Sogawa Tomomi、Mukumoto Naritoshi、Ogino Chiaki、Sasaki Ryohei
    • Journal Title

      Journal of Experimental &amp; Clinical Cancer Research

      Volume: 41 Pages: 1-21

    • DOI

      10.1186/s13046-022-02358-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 細胞ターゲッティングを付加した過酸化チタンナノ粒子の将来展望2024

    • Author(s)
      赤坂浩亮
    • Organizer
      日本放射線腫瘍学会
    • Related Report
      2024 Annual Research Report
  • [Presentation] Association of Fiducial Marker Position with Target Volume in Stereotactic Lung Irradiation: A Cross-Sectional Study2022

    • Author(s)
      1.Hiroaki Akasaka, Kazufusa Mizonobe, Yuya Oki, Kazuyuki Uehara, Shuhei Tamura, Yoshiki Munetomo, Aya Harada, Masao Nakayama, Haruna Kawaguchi and Hiroshi Mayahara
    • Organizer
      AAPM
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Safety and Efficacy of Transvenous Fiducial Marker Placement for Stereotactic Body Radiotherapy of Malignant Lung Tumors2022

    • Author(s)
      2.Haruna Kawaguchi, Jun Ishida, Chihiro Shindo, Hiroki Horinouchi, Kazuki Terashima, Hiroshi Mayahara, Hiroaki Akasaka, Kazufusa Mizonobe, Masahiko Fujii
    • Organizer
      JRS
    • Related Report
      2022 Research-status Report
  • [Presentation] The position variation between fiducial marker and tumor according to respiratory motion of 250 patients treated by CyberKnife2022

    • Author(s)
      3.Hiroaki Akasaka, Kazufusa Mizonobe, Yuya Oki, Kazuyuki Uehara, Shuhei Tamura, Yoshiki Munetomo, Takeaki Ishihara, Haruna Kawaguchi, Jun Ishida and Hiroshi Mayahara
    • Organizer
      JSMP
    • Related Report
      2022 Research-status Report
  • [Presentation] Development of Stoichiometric calibration method for MVCT to MD table on Tomotherapy2022

    • Author(s)
      4.Shogo Tsunemine, Shuichi Ozawa, Minoru Nakao, Hideharu Miura, Daisuke Kawahara, Akito Saito, Yasuhiko Onishi, Takashi Onishi, Mamoru Ichiki, Satoru Sugimoto, Tatsuya Inoue, Hiroaki Akasaka, Yuya Oki, Hidetoshi Yamasaki, Tsutomu Maruta, Yuji Murakami and Yasushi Nagata
    • Organizer
      JSMP
    • Related Report
      2022 Research-status Report
  • [Presentation] Clinical log file analysis for assessing the tracking accuracy of stereotactic spinal radiosurgery in prone position2022

    • Author(s)
      5.Kazufusa Mizonobe, Kazuyuki Uehara, Hiroaki Akasaka, Yuya Oki, Syuhei Tamura, Yoshiki Munetomo, Hiroshi Mayahara
    • Organizer
      JSMP
    • Related Report
      2022 Research-status Report
  • [Book] 測定ベースのIMRT QAにおける許容限界及び方法論 米国医学物理学会治療物理委員会タスクグループ218勧告 日本語訳2024

    • Author(s)
      赤坂 浩亮、富田哲也、街道亮斗、米田洋介、齋藤正英、高橋侑大、谷本祐樹、中林匡、本間大晴、松永卓磨、南佳孝
    • Total Pages
      43
    • Publisher
      日本医学物理士会
    • Related Report
      2023 Research-status Report

URL: 

Published: 2022-04-19   Modified: 2026-01-16  

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