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Signaling of protein phosphorylation in cancer stem cells for therapeutic target molecules

Research Project

Project/Area Number 20K07600
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionFujita Health University

Principal Investigator

Watanabe Takashi  藤田医科大学, がん医療研究センター, 准教授 (10402562)

Co-Investigator(Kenkyū-buntansha) 柳 久乃  藤田医科大学, 医学部, 助教 (40868949)
天野 睦紀  名古屋大学, 医学系研究科, 准教授 (90304170)
下野 洋平  藤田医科大学, 医学部, 教授 (90594630)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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がん幹細胞 / リン酸化 / シグナル伝達 / リン酸化シグナル / 脳腫瘍 / 乳がん / 骨肉腫幹細胞 / リン酸化蛋白質 / 治療標的
Outline of Research at the Start

がん幹細胞は自己複製能と多分化能、強い造腫瘍性、治療抵抗性といった特徴を有し、がんの再発や転移の原因とされている。申請者の所属する研究室では、乳がんの手術検体を移植した異種移植(PDX)マウスを作製することで、肝臓に自然転移するがん幹細胞を解析できる実験系を世界に先駆けて樹立した。申請者らは本PDXマウスのがん幹細胞では足場タンパク質S100が高発現しており、転移がん幹細胞ではS100の発現がさらに10倍以上誘導されることを見出した。本研究では、S100による乳がん幹細胞の特性を制御する分子機構、特に機能的リン酸化シグナルに焦点を絞り、乳がん幹細胞を標的とする治療ターゲットを提案する。

Outline of Final Research Achievements

Cancer stem cells are characterized by their self-renewal and multilineage potential, robust tumorigenicity, and therapy resistance, and are thought to be responsible for cancer recurrence and metastasis. Recently, it has been shown that cancer stem cells exhibit heterogeneity due to various factors and that a subset of cancer stem cells that can adapt to the transformation of their surrounding environment are responsible for cancer recurrence and metastasis. Here, we employed cancer stem cells artificially engineered by introducing genes and cancer stem cells from a human breast cancer transplantation model (PDX) as research models. By combined approaches from phosphoproteomics, gene expression analysis, and biochemical and cell biological methods, we identify phosphoproteins that determine the heterogeneity and characteristics of cancer stem cells and analyze their functions for therapeutic targets in cancer stem cells.

Academic Significance and Societal Importance of the Research Achievements

がんの不均一性は遺伝的要因と非遺伝的要因により制御される。昨今の次世代シークエンサーの技術革新により遺伝的要因については研究が進んでいるもの、非遺伝的要因は不明な点が多い。本研究は、がんの再発や転移の原因とされているがん幹細胞の不均一性を制御するリン酸化シグナルの一端を明らかにした点で学術的意義が高い。
がん幹細胞はがんの再発や転移の元とされているため、がん幹細胞を駆逐することががんの根治の鍵となる。本研究で明らかになったがん幹細胞の不均一性を制御するリン酸化シグナル、リン酸化タンパク質ががんの悪性度についての病理診断マーカー、治療標的となる可能性がある。

Report

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

    (10 results)

All 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (3 results) Book (1 results)

  • [Int'l Joint Research] University of North Carolina/at Chapel Hill(米国)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Actin nano-architecture of phagocytic podosomes2022

    • Author(s)
      Watanabe Takashi、Herron J. Cody、Hu Shiqiong、Nogueira Ana T.、Liu Bei、Kern Megan E.、Aaron Jesse、Taylor Aaron、Pablo Michael、Chew Teng-Leong、Elston Timothy C.、Hahn Klaus M.
    • Journal Title

      Nature Communications

      Volume: 13 Issue: 1 Pages: 4363-4363

    • DOI

      10.1038/s41467-022-32038-0

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spatial models of pattern formation during phagocytosis2022

    • Author(s)
      Herron John Cody、Hu Shiqiong、Liu Bei、Watanabe Takashi、Hahn Klaus M.、Elston Timothy C.
    • Journal Title

      PLOS Computational Biology

      Volume: 18 Issue: 10 Pages: e1010092-e1010092

    • DOI

      10.1371/journal.pcbi.1010092

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Regulatory roles of fibronectin and integrin α5 in reorganization of the actin cytoskeleton and completion of adipogenesis2022

    • Author(s)
      Uetaki Megumi、Onishi Nobuyuki、Oki Yoshinao、Shimizu Takatsune、Sugihara Eiji、Sampetrean Oltea、Watanabe Takashi、Yanagi Hisano、Suda Kiyoshi、Fujii Hiroya、Kano Koichiro、Saya Hideyuki、Nobusue Hiroyuki
    • Journal Title

      Molecular Biology of the Cell

      Volume: 33 Issue: 9

    • DOI

      10.1091/mbc.e21-12-0609

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Adipsin-Dependent Secretion of Hepatocyte Growth Factor Regulates the Adipocyte-Cancer Stem Cell Interaction2021

    • Author(s)
      Mizuno Masahiro、Khaledian Behnoush、Maeda Masao、Hayashi Takanori、Mizuno Seiya、Munetsuna Eiji、Watanabe Takashi、Kono Seishi、Okada Seiji、Suzuki Motoshi、Takao Shintaro、Minami Hironobu、Asai Naoya、Sugiyama Fumihiro、Takahashi Satoru、Shimono Yohei
    • Journal Title

      Cancers

      Volume: 13 Issue: 16 Pages: 4238-4238

    • DOI

      10.3390/cancers13164238

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Upregulation of S100A10 in metastasized breast cancer stem cells2020

    • Author(s)
      Yanagi Hisano、Watanabe Takashi、Nishimura Tatsunori、Hayashi Takanori、Kono Seishi、Tsuchida Hitomi、Hirata Munetsugu、Kijima Yuko、Takao Shintaro、Okada Seiji、Suzuki Motoshi、Imaizumi Kazuyoshi、Kawada Kenji、Minami Hironobu、Gotoh Noriko、Shimono Yohei
    • Journal Title

      Cancer Science

      Volume: 111 Issue: 12 Pages: 4359-4370

    • DOI

      10.1111/cas.14659

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Investigation of druggable protein phosphorylation in heterogeneity of glioma stem cells2022

    • Author(s)
      柳久乃
    • Organizer
      第19回日本臨床腫瘍学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] Metabolically distinct glioma stem cells differentially require Girdin for stem cell behavior and tumor development2021

    • Author(s)
      渡辺崇
    • Organizer
      第80回日本癌学会学術総会
    • Related Report
      2021 Research-status Report
  • [Presentation] 転移乳がん幹細胞におけるS100A10の発現上昇2020

    • Author(s)
      柳久乃
    • Organizer
      日本癌学会学術総会
    • Related Report
      2020 Research-status Report
  • [Book] Medical Technology, 蛍光染色のあれこれ2022

    • Author(s)
      渡辺崇、柳久乃、船橋靖広
    • Total Pages
      5
    • Publisher
      医歯薬出版株式会社
    • Related Report
      2021 Research-status Report

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

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