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Development of a novel oral cancer therapy utilizing the anti-tumor effect and immune activation by atmospheric pressure plasma.

Research Project

Project/Area Number 21K03524
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 14030:Applied plasma science-related
Research InstitutionSaga University

Principal Investigator

Yamashita Yoshio  佐賀大学, 医学部, 教授 (50322300)

Co-Investigator(Kenkyū-buntansha) 合島 怜央奈  佐賀大学, 医学部, 講師 (30756143)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords大気圧プラズマ / 口腔がん / 免疫 / 扁平上皮癌 / 免疫系細胞 / 免疫細胞 / 抗腫瘍効果 / 免疫賦活化
Outline of Research at the Start

プラズマは放射線治療と異なり被爆等の問題がないため、一般の診療室での治療が可能である。またプラズマ生成に関しては大規模な装置は必要なく、テーブルトップで可能である。装置作製、あるいは日常運用ともに安価に行える(推定で数十万円程度)。特にプラズマ生成に大気を選択したことで大幅なコストの削減となる。
現在までに得られたプラズマの特性を十分に活かすことで、本技術が口腔がん治療に浸透すると期待する。また頭頸部領域に発生する扁平上皮癌以外の唾液腺癌や転移性癌などに対しても幅広く活用が期待できる。特に放射線治療や化学療法などが身体的に負担となる高齢者に対して、安全で低侵襲な治療法となりうると考える。

Outline of Final Research Achievements

Surgery, radiotherapy, and chemotherapy are the mainstays of oral cancer treatment, but they present various problems. Especially in today's hyper-aged society, many patients have various pre-existing conditions that make treatment difficult. The purpose of this study was to develop a new, safe and effective oral cancer treatment. By utilizing atmospheric pressure plasma, it was confirmed that an antitumor effect on oral cancer cell lines could be obtained. On the other hand, it was also confirmed that invasion of normal cells is minimized. It was also found that irradiation of immune system cells with atmospheric plasma under certain conditions can activate immune functions.

Translated with www.DeepL.com/Translator (free version)

Academic Significance and Societal Importance of the Research Achievements

今回の研究成果から、大気圧プラズマが口腔癌治療として活用できることが示唆された。つまり、抗腫瘍効果を維持したまま、従来の治療法で問題となる皮膚炎や口内炎といった副作用の出現が少ない治療法となり得る。高齢者や様々な既往症をもった患者など幅広い適応を有する新規の治療法になると考える。
また一方で、大気圧プラズマによって免疫系細胞の賦活化も確認されたことから、照射によって周囲に浸潤している免疫系細胞にも影響を及ぼすことで、自己の抗癌作用の向上も期待できる。この治療法が確立されれば、口腔癌治療に大きく貢献できると確信する。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (7 results)

All 2024 2023 2022 2021

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] Association between the Prognostic Nutritional Index and the Occurrence of Immune-Related Adverse Events2024

    • Author(s)
      Furuno T, Sogawa R, Hashimoto T, Matsuo S, Shirahama W, Kamura T, Hosoya K, Senjyu Y, Yamashita Y, Inoue T, Yamauchi M, Katsuya H, Noguchi M, Sueoka-Aragane N, Shimanoe C.
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 47 Issue: 2 Pages: 361-365

    • DOI

      10.1248/bpb.b23-00760

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2024-02-03
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Oral-specific microenvironments regulate cell behavior and anticancer drug sensitivity of tongue squamous cell carcinoma.2023

    • Author(s)
      Iwamoto S, Nishiyama M, Kawasaki M, Morito S, Sakumoto T, Toda S, Yamashita Y, Aoki S.
    • Journal Title

      Clin. Exp. Dent. Res.

      Volume: 9 Pages: 1044-1050

    • DOI

      10.1007/s13577-023-00866-x

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multicenter retrospective study of nivolumab for recurrent/metastatic oral squamous cell carcinoma2022

    • Author(s)
      Yamakawa N, Umeda M, Yoshii Y, Mitsudo K, Noguchi M, Kusukawa J, Katakura A, Nakayama H, Sasaki M, Noguchi T, Ueda M, Bukawa H, Yagihara K, Horie A, Miyazaki A, Chikazu D, Tomihara K, Mishima K, Otsuru M, Asoda S, Fujiwara S, Ohyama Y, Kurita H, Kawamata H, Fukuda M, et al
    • Journal Title

      Oral Diseases

      Volume: - Issue: 2 Pages: 1-22

    • DOI

      10.1111/odi.14471

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] An ultrasonic osteotomy device enhanced post-osteotomy bone healing beyond that with a conventional rotary device in a rat calvarial model2022

    • Author(s)
      Danjo Atsushi、Aijima Reona、Yoshimoto Reiko U.、Tanaka Shin-Ichi、Iwamoto Shuhei、Katsuki Takeshi、Aoki Shigehisa、Kido Mizuho A.、Yamashita Yoshio
    • Journal Title

      Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology

      Volume: 34 Issue: 3 Pages: 243-251

    • DOI

      10.1016/j.ajoms.2021.10.002

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Implant Prosthetic Treatment for Reconstructed Jawbones Using Dynamic 3D Navigation System2023

    • Author(s)
      Yoshio Yamashita
    • Organizer
      9th World Congress of the International Academy of Oral Oncology (IAOO 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 誘電体バリア放電プラズマにより生成される活性酸素種を用いた長尺細管内滅菌 特性2021

    • Author(s)
      武藤 玲於奈,林 信哉,野田 稔,山下 佳雄,佐野 真那理,青木 誠,森田 貴之
    • Organizer
      医療機器学
    • Related Report
      2021 Research-status Report
  • [Book] 口腔癌2023

    • Author(s)
      桐田 忠昭、原田 浩之
    • Total Pages
      724
    • Publisher
      医歯薬出版
    • ISBN
      9784263423158
    • Related Report
      2023 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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