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Development of a novel targeted internal radiotherapy strategy by co-targeting of cancer cell integrin, angiogenesis, and hypoxic environment

Research Project

Project/Area Number 18K07776
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 InstitutionNational Institutes for Quantum Science and Technology

Principal Investigator

Jin Zhao-Hui  国立研究開発法人量子科学技術研究開発機構, 量子医科学研究所 分子イメージング診断治療研究部, 主任研究員 (70324150)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsがん不均一性 / 標的アイソトープ治療 / インテグリン / 血管新生 / 低酸素環境 / 低pH / 放射性医薬品 / 同時標的 / 標的放射線内照射療法 / RI内用療法 / 腫瘍内不均一性 / 併用治療戦略 / 腫瘍内放射能分布 / αVβ3インテグリン / 腫瘍内低酸素環境 / 放射線内照射療法 / 放射線内用療法 / 腫瘍内低酸素領域
Outline of Final Research Achievements

In this research, a series of studies were conducted on the development of a novel targeted radionuclide therapy (TRT) strategy that simultaneously targets cancer cell integrins, angiogenesis, and the hypoxic environment. Using human tumor xenograft models, we confirmed that the intratumoral distributions (ITDs) of 64Cu-RaftRGD, a β-particle emitting therapeutic agent targeting αVβ3 integrins overexpressed on both cancer cells and angiogenic endothelial cells, and 64Cu-ATSM, a β-particle emitting therapeutic agent targeting hypoxia, were discordant but spatially complementary, and that the combination of the two drugs improved the therapeutic efficacy even though the total radioactivity uptake was lower. The complementary ITDs of fluorescent dye Cy5.5 or 64Cu-labeled RaftRGD and the representative hypoxia probe pimonidazole were demonstrated in various tumor models, providing the basic rationale for the combination TRT concept that simultaneously targets integrins and hypoxia.

Academic Significance and Societal Importance of the Research Achievements

腫瘍組織内の不均一性は、がんの治療抵抗性の根本的な原因であると認識されつつある。標的放射線内照射療法の治療効果を高めるために、投与線量の増加や化学療法などの他の治療法との併用が一般的に行われている。本研究課題は、腫瘍内分布が異なるが相補的な2つの放射性治療薬剤を用いた併用治療戦略において、腫瘍組織における細胞致死的な放射能の分布を改善することで治療効果が向上することを明確に示した世界初の研究である。本研究の成果は、難治性がんに対する腫瘍内不均一性を克服する新たな治療戦略の開発に役立つものであり、副作用の少ないより有効ながん治療法の開発に大きな社会的意義があると考えられる。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (9 results)

All 2022 2021 2020 2018 Other

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

  • [Int'l Joint Research] University Grenoble Alpes/CNRS/University of Montpellier(フランス)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University Grenoble Alpes/University of Montpellier(フランス)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University Grenoble Alpes(フランス)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Multiplexed Imaging Reveals the Spatial Relationship of the Extracellular Acidity-Targeting pHLIP with Necrosis, Hypoxia, and the Integrin-Targeting cRGD Peptide2022

    • Author(s)
      Zhao-Hui Jin, Atsushi B Tsuji, Melissa Degardin, Pascal Dumy, Didier Boturyn, and Tatsuya Higashi
    • Journal Title

      Cells

      Volume: 11 Issue: 21 Pages: 3499-3499

    • DOI

      10.3390/cells11213499

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Radiotheranostic Agent 64Cu-cyclam-RAFT-c(-RGDfK-)4 for Management of Peritoneal Metastasis in Ovarian Cancer2020

    • Author(s)
      Jin Zhao-Hui、Tsuji Atsushi B.、Degardin Melissa、Sugyo Aya、Obara Satoshi、Wakizaka Hidekatsu、Nagatsu Kotaro、Hu Kuan、Zhang Ming-Rong、Dumy Pascal、Boturyn Didier、Higashi Tatsuya
    • Journal Title

      Clinical Cancer Research

      Volume: 26 Issue: 23 Pages: 6230-6241

    • DOI

      10.1158/1078-0432.ccr-20-1205

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Uniform intratumoral distribution of radioactivity produced using two different radioagents, 64Cu-cyclam-RAFT-c(-RGDfK-)4 and 64Cu-ATSM, improves therapeutic efficacy in a small animal tumor model2018

    • Author(s)
      Jin ZH, Tsuji AB, Degardin M, Sugyo A, Yoshii Y, Nagatsu K, Zhang MR, Fujibayashi Y, Dumy P, Boturyn D, Higashi T
    • Journal Title

      EJNMMI Research

      Volume: 8 (1) Issue: 1 Pages: 54-54

    • DOI

      10.1186/s13550-018-0407-3

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] A radiotheranostic study for strategic treatment of ovarian cancer peritoneal metastases using the all-in-one multimeric radiopeptide 64Cu-cyclam-RAFT-c(-RGDfK-)42021

    • Author(s)
      Zhao-Hui Jin, Atsushi B. Tsuji, Melissa Degardin, Aya Sugyo, Satoshi Obara, Hidekatsu Wakizaka, Kotaro Nagatsu, Kuan Hu, Ming-Rong Zhang, Pascal Dumy, Didier Boturyn, and Tatsuya Higashi
    • Organizer
      第68回米国核医学・分子イメージング学会(SNMMI2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Uniformed intratumoral distribution of radioactivity produced by using two different radioagents 64Cu-cyclam-RAFT-c(-RGDfK-)4 and 64Cu-ATSM improves therapeutic efficacy in a small animal tumor model2018

    • Author(s)
      Zhao-Hui Jin, Atsushi Tsuji, Melissa Degardin, Aya Sugyo, Yukie Yoshii, Kotaro Nagatsu, Ming-Rong Zhang, Yasuhisa Fujibayashi, Pascal Dumy, Didier Boturyn, and Tatsuya Higashi
    • Organizer
      SNMMI 2018 Annual Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Funded Workshop] 第68回米国核医学・分子イメージング学会(SNMMI2021)2021

    • Related Report
      2021 Research-status Report

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Published: 2018-04-23   Modified: 2024-01-30  

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