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Study of anti-tumor immune effect induced by plasma irradiation to normal tissue

Research Project

Project/Area Number 20K20995
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 21:Electrical and electronic engineering and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Ono Ryo  東京大学, 大学院新領域創成科学研究科, 教授 (90323443)

Project Period (FY) 2020-07-30 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2020: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywordsプラズマ医療 / がん治療 / 免疫治療 / 正常組織照射 / ストリーマ放電 / 癌治療
Outline of Research at the Start

本研究では、放電プラズマで癌の免疫治療を行うプラズマ医療の研究の一環として、癌に罹患したマウスの「非腫瘍部」へプラズマを照射し、癌に対するマウスの免疫を高められるかどうかを検証する。プラズマを腫瘍部よりも照射が容易な非腫瘍部へ照射して癌の免疫治療を行う、まったく新しい癌の治療法の研究である。

Outline of Final Research Achievements

In this study, it was shown that plasma irradiation to normal tissue of tumor-bearing mice have an anti-tumor effect on tumors distant from the irradiated area. When plasma was irradiated to the upper left back of the mice for 10 minutes a day for a total of 5 days, it was observed that the growth of mouse colon cancer Colon-26 tumor on the right flank, located far from the irradiated area, was slowed. This effect was observed only when the tumor volume on the first day of plasma irradiation was relatively small. Experiments using immunodeficient mice suggested that this antitumor effect of normal tissue irradiation was due to T cell-derived adaptive immunity.

Academic Significance and Societal Importance of the Research Achievements

本研究では、がんを有するマウスの正常組織に放電プラズマを照射すると、照射部から離れた場所にある腫瘍に抗腫瘍効果が得られることを示した。そして、この効果がマウスの抗腫瘍免疫反応によるものであることを示した。このような現象は、他の放射線治療などの分野でもほとんど観測されたことはなく、副作用が比較的小さいと考えられているプラズマの正常組織照射による、新たながん治療法の開発につながることが期待される。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (21 results)

All 2022 2021

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (19 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Journal Article] Antitumor abscopal effects in mice induced by normal tissue irradiation using pulsed streamer discharge plasma2022

    • Author(s)
      Jinno Reima、Komuro Atsushi、Yanai Hideyuki、Ono Ryo
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 55 Issue: 17 Pages: 17LT01-17LT01

    • DOI

      10.1088/1361-6463/ac4c23

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Streamer propagation in atmospheric-pressure air: effect of the pulse voltage rise rate from 0.1 to 100 kV ns<sup>?1</sup> and streamer inception voltage2021

    • Author(s)
      Komuro Atsushi、Ryu Terumasa、Yoshino Akihiro、Namihira Takao、Wang Douyan、Ono Ryo
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 54 Issue: 36 Pages: 364004-364004

    • DOI

      10.1088/1361-6463/ac0b0f

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] マウス正常組織へのプラズマ照射による大腸がん腫瘍の成長抑制効果と原理解明2022

    • Author(s)
      神野 玲磨, 小室 淳史, 柳井 秀元, 小野 亮
    • Organizer
      2022年度静電気学会春期講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 免疫不全マウスの正常組織に対するプラズマ照射の抗腫瘍効果の検証2022

    • Author(s)
      和田 健吾, 神野 怜磨, 小室 淳史, 柳井 秀元, 小野 亮
    • Organizer
      2022年度静電気学会春期講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 大気圧O2/N2中における正極性シングルフィラメントストリーマ放電の特性計測2022

    • Author(s)
      吉野 彰浩, 小室 淳史, 小野 亮
    • Organizer
      2022年度静電気学会春期講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Simulation Study for Influence of the Ionization Rates on Positive Primary Streamer Propagation2022

    • Author(s)
      Z. Wei, A. Komuro, and R. Ono
    • Organizer
      2022年度静電気学会春期講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Anti-tumor abscopal effect on CT26 tumor in mice induced by electrical discharge plasma irradiation on normal tissue2021

    • Author(s)
      R. Ono, R. Jinno, A. Komuro, and H. Yanai
    • Organizer
      第50回日本免疫学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Two-Dimensional Simulation of atmospheric single-filament streamer with finite element method2021

    • Author(s)
      Z. Wei, A. Komuro, and R. Ono
    • Organizer
      Japan-Ruhr University Bochum Workshop, Bridging the Pandemic: Reigniting Cooperation on Plasma Research
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Validation of streamer discharge simulation with measurements2021

    • Author(s)
      R. Ono and A. Komuro
    • Organizer
      Japan-Ruhr University Bochum Workshop, Bridging the Pandemic: Reigniting Cooperation on Plasma Research
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Two-dimensional simulation of single filament streamer discharge in atmospheric pressure air2021

    • Author(s)
      Z. Wei, A. Komuro, and R. Ono
    • Organizer
      8th East Asia Joint Symposium on Plasma and Electrostatics Technologies for Environmental Applications
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Measurements of single-filament pulsed positive streamer discharge and two-dimensional ozone density distribution in atmospheric-pressure nitrogen-oxygen mixture - effects of oxygen concentration2021

    • Author(s)
      A. Yoshino, A. Komuro, and R. Ono
    • Organizer
      74th Annual Gaseous Electronics Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] マウス正常組織へのプラズマ照射による大腸がん腫瘍の成長抑制効果2021

    • Author(s)
      神野 玲磨, 小室 淳史, 柳井 秀元, 小野 亮
    • Organizer
      第45回静電気学会全国大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Development of the simulation model of an atmospheric-pressure streamerdischarge in air by using COMSOL2021

    • Author(s)
      Z. Wei, A. Komuro, and R. Ono
    • Organizer
      第45回静電気学会全国大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 正極性シングルフィラメントストリーマ放電のO2(v = 6)計測 ― 酸素濃度による影響2021

    • Author(s)
      吉野 彰浩, 小室 淳史, 小野 亮
    • Organizer
      第45回静電気学会全国大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 電圧立ち上がり速度と電極曲率による1 次ストリーマの制御2021

    • Author(s)
      小室 淳史, 小野 亮
    • Organizer
      38th Symposium on Plasma Processing/33rd Symposium on Plasma Science for Materials
    • Related Report
      2020 Research-status Report
  • [Presentation] 真空紫外法を用いたポリマー表面におけるOH およびO ラジカルの処理効果の定量的計測2021

    • Author(s)
      バトトルガ ツグルダー, 村上 晋一朗, 小室 淳史, 小野 亮
    • Organizer
      38th Symposium on Plasma Processing/33rd Symposium on Plasma Science for Materials
    • Related Report
      2020 Research-status Report
  • [Presentation] 空間制御された大気圧空気中正極性2 次ストリーマ放電に対する電子密度、換算電界、発光強度の包括的測定2021

    • Author(s)
      稲田 優貴, 塩田 達俊, 中村 亮介, 小野 亮, 前山 光明
    • Organizer
      38th Symposium on Plasma Processing/33rd Symposium on Plasma Science for Materials
    • Related Report
      2020 Research-status Report
  • [Presentation] 活性種によるガン細胞への効果の定量的評価2021

    • Author(s)
      神野 玲磨, 小室 淳史, 小野 亮
    • Organizer
      38th Symposium on Plasma Processing/33rd Symposium on Plasma Science for Materials
    • Related Report
      2020 Research-status Report
  • [Presentation] 正極性シングルフィラメントストリーマ放電の進展とレーザー誘起蛍光法を用いたオゾン密度計測ー酸素濃度による影響2021

    • Author(s)
      吉野 彰浩, 小室 淳史, 小野 亮
    • Organizer
      38th Symposium on Plasma Processing/33rd Symposium on Plasma Science for Materials
    • Related Report
      2020 Research-status Report
  • [Presentation] 正極性シングルフィラメントストリーマの進展計測とオゾン密度計測―酸素濃度による影響2021

    • Author(s)
      吉野 彰浩, 小室 淳史, 小野 亮
    • Organizer
      2021年度静電気学会春期講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 大気圧He/O2プラズマジェットのO密度計測2021

    • Author(s)
      堀部 ひかり, 中川 雄介, 小室 淳史, 小野 亮
    • Organizer
      2021年度静電気学会春期講演会
    • Related Report
      2020 Research-status Report

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Published: 2020-08-03   Modified: 2023-01-30  

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