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

In vivo imaging of immune and inflammatory responses during cancer photoimmunotherapy

Research Project

Project/Area Number 21K20706
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0801:Pharmaceutical sciences and related fields
Research InstitutionHokkaido University

Principal Investigator

Nakajima Kohei  北海道大学, 薬学研究院, 助教 (40907771)

Project Period (FY) 2021-08-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords光免疫療法 / がん / 生体イメージング / 光感受性化合物 / 光化学反応 / 免疫チェックポイント阻害剤
Outline of Research at the Start

光を用いたがん治療法である光免疫療法(PIT)は、抗腫瘍免疫応答を効率的に活性化する。申請者はこれまでに、免疫チェックポイント阻害剤を投与したマウスに、過剰な光照射量でPITを行うと全身性の副作用が生じることを見出した。これには免疫・炎症応答の関与が想定されるが、PITが起点となった生体内の反応がどう推移して副作用に至るかは明らかとなっていない。
本研究では、PITと免疫チェックポイント阻害剤併用時の副作用の回避を目指し、同一個体を経時的に解析できる生体イメージングを用いて免疫・炎症反応の推移を明らかにする。同時に、血液検査値や臓器障害などを総合的に分析することで副作用の病態に迫る。

Outline of Final Research Achievements

The purpose of this study is to elucidate the process of immune and inflammatory responses induced by near-infrared photoimmunotherapy (PIT), which is a newly developed cancer phototherapy, using in vivo imaging techniques. We performed PIT on tumor-bearing nude mice and analyzed them using [18F]FDG-PET and MRI. The results suggested that PIT induced inflammatory edema in surrounding tissue of the light-irradiated tumors. Furthermore, when PIT was performed on immunocompetent C57BL/6J mice, more significant changes in blood electrolytes was observed compared to nude mice. These results suggested inflammatory and/or immune cells such as T cells are considered to be deeply related to the physiological response during PIT.

Academic Significance and Societal Importance of the Research Achievements

本研究において、PITが引き起こす免疫・炎症反応の一端を明らかにすることに成功した。がん治療において、過剰な免疫・炎症応答は副作用に繋がる可能性がある一方、適切に免疫応答が活性化された場合は、抗腫瘍免疫応答の誘導を介して高い治療効果が得られる可能性も考えられる。したがって、本研究を足掛かりに引き続き検討を行うことで、臨床において副作用を回避しつつ効果的な治療を行うための方策につながることが期待される。

Report

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

    (10 results)

All 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (7 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Application of Imaging for Antibody-Based Cancer Therapies : Photoimmunotherapy and Immune Checkpoint Blockade Therapy2022

    • Author(s)
      Kohei Nakajima, Mikako Ogawa
    • Journal Title

      NIHON GAZO GAKKAISHI (Journal of the Imaging Society of Japan)

      Volume: 61 Issue: 6 Pages: 643-651

    • DOI

      10.11370/isj.61.643

    • ISSN
      1344-4425, 1880-4675
    • Year and Date
      2022-12-10
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] PD1 blockade alters cell-cycle distribution and affects 3′-deoxy-3′-[18F]fluorothymidine uptake in a mouse CT26 tumor model2022

    • Author(s)
      Suzuki Motofumi、Matsuda Takuma、Nakajima Kohei、Yokouchi Yuta、Kuge Yuji、Ogawa Mikako
    • Journal Title

      Annals of Nuclear Medicine

      Volume: 36 Issue: 11 Pages: 931-940

    • DOI

      10.1007/s12149-022-01782-0

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reduction of tumor hypoxia by anti-PD-1 therapy assessed using pimonidazole and [18F]FMISO2022

    • Author(s)
      Nakajima Kohei、Homma Mitsunori、Suzuki Motofumi、Yokouchi Yuta、Matsuda Takuma、Takakura Hideo、Hirata Kenji、Kuge Yuji、Ogawa Mikako
    • Journal Title

      Nuclear Medicine and Biology

      Volume: 108-109 Pages: 85-92

    • DOI

      10.1016/j.nucmedbio.2022.03.005

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 抗PD-1抗体が腫瘍内の低酸素状態に及ぼす影響に関する低酸素PETイメージング剤を用いた検討2022

    • Author(s)
      中島 孝平, 本間 充憲, 鈴木 基史, 横内 勇太, 松田 拓真, 高倉 栄男, 平田 健司, 久下 裕司, 小川 美香子
    • Organizer
      第34回 バイオメディカル分析科学シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] Influence of anti-PD-1 therapy on tumor hypoxia assessed with pimonidazole and [18F]FMISO2022

    • Author(s)
      Kohei Nakajima, Mitsunori Homma, Motofumi Suzuki, Yuta Yokouchi, Takuma Matsuda, Hideo Takakura, Kenji Hirata, Yuji Kuge, Mikako Ogawa
    • Organizer
      13th Congress of the World Federation of Nuclear Medicine and Biology
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 腫瘍内の低酸素状態に抗PD-1療法が及ぼす影響に関する検討2022

    • Author(s)
      中島 孝平, 鈴木 基史, 高倉 栄男, 久下 裕司, 小川 美香子
    • Organizer
      第81回日本癌学会学術総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Anti-PD-1 therapy reduces tumor hypoxia: evaluation with pimonidazole and [18F]fluoromisonidazole as hypoxia probes2022

    • Author(s)
      Kohei Nakajima, Mitsunori Homma, Motofumi Suzuki, Yuta Yokouchi, Takuma Matsuda, Hideo Takakura, Kenji Hirata, Yuji Kuge, Mikako Ogawa
    • Organizer
      12th AACR-JCA joint conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of biological characteristics in photoimmunotherapy-treated tumors using PET and MRI2021

    • Author(s)
      中島 孝平, 安井 博宣, 東川 桂, 高倉 栄男, 間賀田 泰寛, 久下 裕司, 小川 美香子
    • Organizer
      第80回日本癌学会学術総会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 光免疫療法が腫瘍に及ぼす機能的変化に関するFDG-/FMISO-PETおよびMRIを用いた検討2021

    • Author(s)
      中島孝平, 杉川晃代, 安井博宣, 東川桂, 高倉栄男, 鈴木千恵, 間賀田泰寛, 久下裕司, 小川美香子
    • Organizer
      第61回 日本核医学会学術総会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] PET and MR imaging of physiological responses after near-infrared photoimmunotherapy of cancer2021

    • Author(s)
      Kohei Nakajima, Akiyo Sugikawa, Hironobu Yasui, Kei Higashikawa, Hideo Takakura, Chie Suzuki, Yasuhiro Magata, Yuji Kuge, Mikako Ogawa
    • Organizer
      The 11th China-Japan-Korea Symposium on Radiopharmaceutical Sciences
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2021-10-22   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi