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Prediction Model for Tumor Immune Activation and Radiotherapy Effectiveness Using Machine Learning

Research Project

Project/Area Number 22K07671
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 InstitutionSapporo Medical University

Principal Investigator

Hasegawa Tomokazu  札幌医科大学, 医学部, 助教 (80631168)

Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2024: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords放射線治療 / 腫瘍免疫 / 機械学習
Outline of Research at the Start

近年、腫瘍免疫機構のメカニズムが詳しく調べられ、腫瘍細胞がいかにして宿主の免疫細胞からの攻撃を避けて増殖、進行するメカニズムが解明されつつある。また、放射線治療により免疫応答を惹起し、腫瘍細胞を細胞死に至らせる免疫原性細胞死(Immunogenic cell death)の誘導の有無が放射線治療成績に影響を与えている可能性が指摘されている。そこで人工知能(AI)を活用し、高精度で臨床応用が容易な放射線治療による腫瘍免疫活性化の予測モデルを作成して、個別化した放射線治療の実現を目的とする。

Outline of Final Research Achievements

Immunohistochemical staining for CD8/FoxP3-positive cells was completed, and cases of preoperative radiation therapy for cervical cancer with available treatment outcome data were used to compare quantitative evaluation using specialized software with conventional visual assessment. The study demonstrated no significant differences between the two methods and explored the potential superiority of software-based assessment.Similarly, using cases of oropharyngeal cancer with completed CD8 immunohistochemical staining and available treatment outcome data, we evaluated the validity of software-based assessment. In both cervical cancer and oropharyngeal cancer, quantitative evaluation using the specialized software showed no significant differences compared to conventional visual assessment. Additionally, the software demonstrated the potential for faster analysis.

Academic Significance and Societal Importance of the Research Achievements

本研究は、放射線治療を受けた子宮頸癌および中咽頭癌の症例において、CD8/FoxP3陽性細胞の免疫組織染色を専用ソフトで定量解析し、従来の目視判定と同等の妥当性を持つこと、かつ短時間での解析が可能であることを示した。これにより、放射線治療後の免疫環境の客観的評価が可能となり、病理診断の効率化や標準化に加え、免疫反応に基づく個別化放射線治療の推進にも貢献する学術的・社会的意義がある。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (5 results)

All 2024

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (3 results)

  • [Journal Article] Identification and Quantification of Radiotherapy-related Protein Expression in Cancer Tissues Using the Qupath Software and Prediction of Treatment Response2024

    • Author(s)
      Hasegawa T, Someya M, Tsuchiya T, Kitagawa M, Fukushima Y, Gocho T, Mafune S, Okuda R, Kaguchi J, Ohguro A, Kamiyama R, Ashina A, Toshima Y, Hirohashi Y, Torigoe T, Sakata KI
    • Journal Title

      In Vivo

      Volume: 38 Issue: 3 Pages: 1470-1476

    • DOI

      10.21873/invivo.13593

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Prediction of Treatment Response Based on Nutritional Status and Tumor Immunity in Oropharyngeal Cancer Patients Treated With Chemoradiotherapy2024

    • Author(s)
      KITAGAWA MIO、KAGUCHI JUNO、SOMEYA MASANORI、FUKUSHIMA YUKI、HASEGAWA TOMOKAZU、TSUCHIYA TAKAAKI、GOCHO TOSHIO、MAFUNE SHOH、IKEUCHI YUTARO、OKUDA RYU、OHGURO ATSUYA、KAMIYAMA RYO、ASHINA AYATO、TOSHIMA YUKA、HIROHASHI YOSHIHIKO、TORIGOE TOSHIHIKO、SAKATA KOH-ICHI
    • Journal Title

      Cancer Diagnosis & Prognosis

      Volume: 4 Issue: 6 Pages: 789-796

    • DOI

      10.21873/cdp.10397

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 頭頸部化学放射線療法中のリンパ球数予測.2024

    • Author(s)
      戸島有香,眞船翔,芦名彩斗,上山凌央,新田健一朗,後町俊夫,土屋高旭,長谷川智一,北川未央,染谷正則.
    • Organizer
      第150回日本医学放射線学会北日本地方会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 中・下咽頭癌に対する放射線治療における急性期有害事象の検討.2024

    • Author(s)
      芦名彩斗,眞船翔,後町俊夫,土屋高旭,長谷川智一,北川未央,染谷正則.
    • Organizer
      第150回日本医学放射線学会北日本地方会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 頸部食道癌に対する放射線治療成績についての検討.2024

    • Author(s)
      兵頭杏奈,藤井收,池内佑太郎,大内敦,長谷川智一,土屋高旭.
    • Organizer
      日本放射線腫瘍学会第37回学術大会
    • Related Report
      2024 Annual Research Report

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Published: 2022-04-19   Modified: 2026-01-16  

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