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Establishment of a new personalized drug selection system based on drug sensitivity of breast cancer stem cells

Research Project

Project/Area Number 20K08981
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55010:General surgery and pediatric surgery-related
Research InstitutionHiroshima University

Principal Investigator

Kadoya Takayuki  広島大学, 原爆放射線医科学研究所, 講師 (20609763)

Project Period (FY) 2020-04-01 – 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 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords乳癌 / 乳癌幹細胞 / 遺伝子解析 / 薬剤感受性 / 幹細胞 / 治療効果予測 / 遺伝子プロファイル / 癌幹細胞 / スフェロイド / 効果予測
Outline of Research at the Start

近年、早期の治療効果に応じて薬剤を変更することにより高い病理学的完全奏功率が得られることが報告され、乳癌治療の概念はresponse-guided therapyへとシフトしている。最も理想的な治療方針の決定方法は、あらかじめ患者の乳癌組織から採取した癌細胞、特に癌幹細胞の薬剤感受性を、患者に投与する前に判定し個別の治療法を選択することである。しかし、乳癌では癌幹細胞の選択的培養が技術的に難しいのが現状である。本研究では、乳癌組織からスフェロイド培養で得た乳癌幹細胞を用い薬剤感受性を測定し、最適な個別化薬剤選択システムを確立するとともに、癌幹細胞を維持するためのメカニズムについて解析したい。

Outline of Final Research Achievements

The percentage of CD44+/CD24- cells in breast cancer cells obtained from 48 breast cancer tissues increased in 93% of cases before and after spheroid culture. In 48 cases, breast cancer stem cells were classified into three groups according to their positive patterns for the mesenchymal markers Twist1, Snail, and Vimentin. The 48 breast cancer stem cells were classified into three groups according to the positive patterns of mesenchymal markers Twist1, Snail, and Vimentin. Gene expression analysis by DNA microarray showed that breast cancer stem cells were classified into two major groups.

Academic Significance and Societal Importance of the Research Achievements

今回の我々の研究の中で最もインパクトのある結果は、患者の乳癌組織から安定的に乳癌幹細胞が得られるようになったことである。それにより、乳癌幹細胞の生物学的特徴、遺伝子情報、薬剤感受性などを患者ごとに知ることができるようになり、治療戦略を立てる上で非常に有用である。次に、これまで一つのサブタイプを遡ると乳癌幹細胞は一つのタイプからなるのではと考えられていたが、我々が得た結果からは乳癌幹細胞の中には少数であるがCD44+/CD24-以外の乳癌幹細胞も存在し、ホルモン感受性、EMTマーカーの発現からも多様性があることが明らかになったことである。

Report

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

    (9 results)

All 2023 2022 2021

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (3 results)

  • [Journal Article] Impact of oral hygiene on febrile neutropenia during breast cancer chemotherapy.2023

    • Author(s)
      Suzuki K, Sasada S, Nishi H, Kimura Y, Shintani T, Emi A, Masumoto N, Kadoya T, Kawaguchi H, Okada M
    • Journal Title

      Breast Cancer

      Volume: 30 Issue: 1 Pages: 151-155

    • DOI

      10.1007/s12282-022-01410-9

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dual-phase FDG PET/CT for predicting prognosis in operable breast cancer.2023

    • Author(s)
      Ikejiri H, Sasada S, Emi A, Masumoto N, Kadoya T, Okada M
    • Journal Title

      Breas

      Volume: 65 Pages: 98-103

    • DOI

      10.1016/j.breast.2022.07.008

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 18F-fluorodeoxyglucose Positron Emission Tomography/Computed Tomography Predicts Tumor Immune Microenvironment Function in Early Triple-negative Breast Cancer2022

    • Author(s)
      KIMURA YURI、SASADA SHINSUKE、EMI AKIKO、MASUMOTO NORIO、KADOYA TAKAYUKI、ARIHIRO KOJI、OKADA MORIHITO
    • Journal Title

      Anticancer Research

      Volume: 43 Issue: 1 Pages: 127-136

    • DOI

      10.21873/anticanres.16141

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Malignant prediction of incidental findings using ring-type dedicated breast positron emission tomography.2022

    • Author(s)
      Sasada S, Masumoto N, Emi A, Kadoya T, Okada M
    • Journal Title

      Sci Rep

      Volume: 2 Issue: 1 Pages: 1144-1144

    • DOI

      10.1038/s41598-022-05166-2

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The TILs-US score on ultrasonography can predict the pathological response to neoadjuvant chemotherapy for human epidermal growth factor receptor 2-positive and triple-negative breast cancer2022

    • Author(s)
      Yuri Kimura, Norio Masumoto, Akiko Kanou, Kayo Fukui, Shinsuke Sasada, Akiko Emi, Takayuki Kadoya, Koji Arihiro, Morihito Okada
    • Journal Title

      Surgical Oncology

      Volume: 41 Pages: 1-6

    • DOI

      10.1016/j.suronc.2022.101725

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The ratio of CD8+ lymphocytes to tumor-infiltrating suppressive FOXP3+ effector regulatory T cells is associated with treatment response in invasive breast cancer.2022

    • Author(s)
      Goda N, Sasada S・・・(他3名)・・・ Nishikawa H, Sakaguchi S, Okada M, Kadoya T
    • Journal Title

      Discov Oncol.

      Volume: 13 Issue: 1 Pages: 27-27

    • DOI

      10.1007/s12672-022-00482-5

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 患者組織由来の乳癌幹細胞の選択培養法の確立と癌幹細胞ターゲット療法への展開2022

    • Author(s)
      末岡智志
    • Organizer
      第30回乳癌基礎研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 患者組織由来の乳癌幹細胞の選択培養法の確立と癌幹細胞ターゲット療法への展開2022

    • Author(s)
      末岡智志
    • Organizer
      第60回日本癌治療学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 乳癌組織からの乳癌幹細胞の選択培養と、癌幹細胞の病理学的特徴2021

    • Author(s)
      末岡智志、角舎学行、池尻はるか、金子佑妃、甲斐あずさ、川又あゆみ、平岡恵美子、笹田伸介、恵美純子、舛本法生、有廣光司、岡田守人
    • Organizer
      第29回日本乳癌学会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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