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Development of gadolinium neutron capture therapy agent for next-generation radiation therapy applied for bone cancer

Research Project

Project/Area Number 19K07717
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 50020:Tumor diagnostics and therapeutics-related
Research InstitutionJuntendo University

Principal Investigator

Matsukawa Takehisa  順天堂大学, 医学部, 准教授 (60453586)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords中性子補足療法 / ガドリニウム / LA-ICP-MS / 中性子捕捉療法 / 骨転移腫瘍 / 骨腫瘍 / 動物モデル
Outline of Research at the Start

担骨腫瘍モデル動物を用いて、157Gd-EDTMPの骨腫瘍への集積をin vivoで検証する。小動物を用いた骨腫瘍には、腫瘍の種類により様々なモデルがある。本研究ではモデルが作成しやすく扱いやすいマウスの各骨腫瘍モデルを作成する。腫瘍長径が一定の大きさになったあと。Gd-EDTMP製剤(5-100 mg Gd/kg)を腹腔内投与し、投与6または24時間後に採血し、骨、腫瘍組織、ほか各種組織を摘出する。血中および各種組織のGd濃度を測定するとともに、腫瘍組織と正常骨組織および周辺筋肉組織のGdについてはLA-ICP-MS法により二次元イメージングを行い腫瘍/正常組織比を算出する。

Outline of Final Research Achievements

In this study, we evaluated the tissue distribution and efficacy of Gd-tetra(methylenephosphonic acid) chelate (Gd-EDTMP) as a neutron capture therapy agent. We proceeded with the same study by creating a carcinogenesis model in elderly mice with a closed epiphyseal line. After neutron irradiation, the distribution of 157Gd in and around the bone was analyzed by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). 20 mg/kg of Gd-EDTMP administered intraperitoneally resulted in a Gd concentration of 1000-2000 ppm in the bone 24 hours later The results of this study showed that the Gd concentration in the bone was 1000-2000 ppm. In addition, a tumor shrinking effect of neutron irradiation was observed in a mouse model of bone metastasis of a 4T1 mammary tumor, although it was not statistically significant.

Academic Significance and Societal Importance of the Research Achievements

治療に適した腫瘍抑制効果を得るためには、Gdを腫瘍領域でさらに濃縮する必要があることが示唆された。本研究で観察されたような、4T1細胞自体へのGdの蓄積メカニズムの解析が不可欠である。また、より効率的な投与方法を模索することが、治療成績の向上につながると考えられます。

Report

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

    (15 results)

All 2023 2022 2021 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (13 results) (of which Int'l Joint Research: 5 results,  Invited: 2 results)

  • [Journal Article] Improvement of spatial resolution of elemental imaging using laser ablation-ICP-mass spectrometry2022

    • Author(s)
      Tanaka Eisei、Matsukawa Takehisa、Kuroki Yasuo、Suzuki Minoru、Yokoyama Kazuhito、Hirata Takafumi
    • Journal Title

      Analytical Sciences

      Volume: 38 Issue: 4 Pages: 695-702

    • DOI

      10.1007/s44211-022-00085-8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Quantitative Bio-imaging of Gadolinium-157 in Tissues Through Laser-ablation ICP-MS for Neutron Capture Therapy2019

    • Author(s)
      Kubota A., Matsukawa T., Yanagie H., Yanagawa M., Hirata T., Shinohara A., Yokoyama K.
    • Journal Title

      Juntendo Medical Journal

      Volume: 65 Issue: 5 Pages: 461-467

    • DOI

      10.14789/jmj.2019.65.JMJ19-OA12

    • NAID

      130007752696

    • ISSN
      2187-9737, 2188-2126
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] LA-ICP-MSによる生体試料中ガドリニウムイメージングにおけるキャリアガスの影響2023

    • Author(s)
      松川岳久, 久保田章乃, 鈴木実, 篠原厚子, 横山和仁
    • Organizer
      第93回日本衛生学会学術総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Neutron irradiation after administration of Gd-EDTMP to a mouse model of mammary tumor bone metastasis: Effects and distribution of Gd formulation as a novel neutron capture therapy agent2022

    • Author(s)
      Matsukawa T., Suzuki M., Kubota A., Shinohara A., Yokoyama K
    • Organizer
      The 8th International Symposium on Metallomics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Comparison of CR-39 autoradiography and laser ablation ICP-MS imaging to assess 10B distribution of tibia bone in 10BPA-treated mice.2021

    • Author(s)
      Matsukawa T., Takeno S., Iwasaki R., Suzuki M., Yokoyama, K
    • Organizer
      The 19th International Congress on Neutron Capture Therapy (ICNCT 19),
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Tumor growth suppression by gadolinium-neutron capture therapy with intra-tumoral injection of gadolinium-liposome complex (Gd-plex) to pancreatic cancer model in vivo.2021

    • Author(s)
      Yanagie Y., Yanagie H., Hou X., Yanagawa M., Matsukawa T., Kubota A., Suzuki M., Masunaga S., Sakurai Y., Tanaka H., Nashimoto M., Takahashi H.
    • Organizer
      The 19th International Congress on Neutron Capture Therapy (ICNCT 19),
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Application of intra-tumoral injection of cationic polymers mixed with Gd compounds for Neutron Capture therapy to pancreatic cancer model2021

    • Author(s)
      Yanagie H., Yanagawa M., Hou X., Yanagie Y., Matsukawa T., Kubota A., Suzuki M., Masunaga S., Sakurai Y., Tanaka H., Nashimoto M., Takahashi H
    • Organizer
      The 19th International Congress on Neutron Capture Therapy (ICNCT 19),
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 医薬品開発へのLA-ICP-MSの実践的応用2021

    • Author(s)
      松川岳久, 横山和仁
    • Organizer
      第8回レーザーアブレーションワークショップ-どうするどうなるLA-ICP-MS-
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] ガドリニウム中性子捕捉療法製剤のマウスin vivoでの用量依存性に関する基礎検討2020

    • Author(s)
      松川岳久, 鈴木実, 久保田章乃, 篠原厚子, 横山和仁
    • Organizer
      メタルバイオサイエンス研究会2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] マウス悪性黒色腫骨転移モデルにおけるガドリニウム中性子捕捉療法の検討2020

    • Author(s)
      篠原厚子, 松川岳久, 鈴木実, 久保田章乃, 梶野一徳, 横山和仁
    • Organizer
      第36回希土類討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] LM8骨腫瘍マウスモデルにおけるGd-EDTMP中性子捕捉療法による効果の検討2020

    • Author(s)
      松川岳久, 鈴木実, 久保田章乃, 篠原厚子, 横山和仁
    • Organizer
      第90回日本衛生学会学術総会
    • Related Report
      2020 Research-status Report
  • [Presentation] メタロミクスの積極的な医学応用=メディカルメタロミクス=2019

    • Author(s)
      松川岳久, 横山和仁
    • Organizer
      メタルバイオサイエンス研究会2019
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 化学形態別分析によるセレン代謝機構の解明.2019

    • Author(s)
      古田直紀, 鈴木和浩, 山尾契, 松川岳久, 篠原厚子, 鈴木道生
    • Organizer
      メタルバイオサイエンス研究会2019
    • Related Report
      2019 Research-status Report
  • [Presentation] 骨腫瘍治療のためのガドリニウム中性子捕捉療法製剤の開発2019

    • Author(s)
      松川岳久, 鈴木実, 久保田章乃, 篠原厚子, 横山和仁
    • Organizer
      第16回日本中性子捕捉療法学会学術大会
    • Related Report
      2019 Research-status Report
  • [Presentation] LA-ICP-MSによるガドリニウム157中性子補足製剤の定量的バイオイメージング2019

    • Author(s)
      松川岳久, 久保田章乃, 柳衛宏宣, 柳川将志, 平田岳史, 篠原厚子, 横山和仁
    • Organizer
      第16回日本中性子捕捉療法学会学術大会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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