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Targeting the factors integrating microenvironmental signals in cancer stem cells

Research Project

Project/Area Number 21K20843
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0901:Oncology and related fields
Research InstitutionGifu Pharmaceutical University

Principal Investigator

Fukasawa Kazuya  岐阜薬科大学, 薬学部, 助教 (70907443)

Project Period (FY) 2021-08-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsグリオブラストーマ / がん幹細胞 / ERK5 / 難治性疾患 / Erk5 / 微小環境 / がん微小環境
Outline of Research at the Start

膠芽腫(Glioblastoma=GBM)は、グリオーマの中で最も悪性度が高く、あらゆるがんにおいて最も予後不良の中枢神経系腫瘍であり、5 年生存率は10%以下である。有効な治療薬の欠如により、約半世紀もの間、集学的な治療を以ってしても著明な予後の改善が認められていない。GBM の根本的な治療法開発は社会的急務である。
本研究では「微小環境シグナル統合因子Erk5による、がん幹細胞制御機構」を解明することで、GBMの革新的治療法の開発基盤の確立を目指す。

Outline of Final Research Achievements

Glioma stem cells (GSC) promote the aggressiveness of glioblastoma (GBM), the most fatal brain tumor. ERK5 is a member of the MAPK family. In this study, we have demonstrated that the MEK5-ERK5-STAT3 pathway plays a critical role in sustaining the stemness and tumorigenicity of GSCs. Silencing ERK5 in GSCs suppressed their ability to self-renew and inhibited the malignant growth of GBM, accompanied by a decrease in STAT3 phosphorylation. Introducing STAT3 counteracted the effects of ERK5 silencing on GSC characteristics. Furthermore, the expression and signaling of ERK5 were associated with poor prognosis in GBM patients with high stem cell properties. Finally, pharmacological inhibition of ERK5 significantly reduced GSC self-renewal and GBM growth. Overall, these findings uncover the crucial involvement of the MEK5-ERK5-STAT3 pathway in sustaining GSC characteristics and promoting the malignant growth of GBM, highlighting it as a potential target for GSC-directed therapy.

Academic Significance and Societal Importance of the Research Achievements

本研究課題の遂行により、ERK5がグリオーマ幹細胞の機能制御メカニズムに深く関連することを見出した。さらに、ERK5阻害剤が、グリオーマ幹細胞の機能を抑制させる働きがあることを実証した。近年、グリオーマだけでなく白血病、乳がんや前立腺がんなどにおいても、その病態とがん幹細胞特性に緊密な関連性があることが報告されている。本研究成果による、「グリオーマ幹細胞の機能調節機構の解明」により、 グリオーマを含む難治性がんに対する新規治療標的が明確になるだけでなく、がん幹細胞が関与する様々ながんに対する根本的治療法開発への展開が期待される。

Report

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

    (5 results)

All 2023 2022

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

  • [Journal Article] MEK5-ERK5 Axis Promotes Self-renewal and Tumorigenicity of Glioma Stem Cells2023

    • Author(s)
      Fukasawa Kazuya、Lyu Jiajun、Kubo Takuya、Tanaka Yuki、Suzuki Akane、Horie Tetsuhiro、Tomizawa Akane、Osumi Ryoma、Iwahashi Sayuki、Tokumura Kazuya、Murata Misato、Kobayashi Masaki、Todo Tomoki、Hirao Atsushi、Hinoi Eiichi
    • Journal Title

      Cancer Research Communications

      Volume: 3 Issue: 1 Pages: 148-159

    • DOI

      10.1158/2767-9764.crc-22-0243

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] SMURF2 phosphorylation at Thr249 modifies glioma stemness and tumorigenicity by regulating TGF-β receptor stability2022

    • Author(s)
      Hiraiwa Manami、Fukasawa Kazuya、Iezaki Takashi、Sabit Hemragul、Horie Tetsuhiro、Tokumura Kazuya、Iwahashi Sayuki、Murata Misato、Kobayashi Masaki、Suzuki Akane、Park Gyujin、Kaneda Katsuyuki、Todo Tomoki、Hirao Atsushi、Nakada Mitsutoshi、Hinoi Eiichi
    • Journal Title

      Communications Biology

      Volume: 5 Issue: 1 Pages: 22-22

    • DOI

      10.1038/s42003-021-02950-0

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Erk5 in Bone Marrow Mesenchymal Stem Cells Regulates Bone Homeostasis by Preventing Osteogenesis in Adulthood2022

    • Author(s)
      Horie Tetsuhiro、Fukasawa Kazuya、Yamada Takanori、Mizuno Seiya、Iezaki Takashi、Tokumura Kazuya、Iwahashi Sayuki、Sakai Shiho、Suzuki Akane、Kubo Takuya、Osumi Ryoma、Tomizawa Akane、Ochi Hiroki、Sato Shingo、Kaneda Katsuyuki、Takahashi Satoru、Hinoi Eiichi
    • Journal Title

      Stem Cells

      Volume: - Issue: 4 Pages: 011-011

    • DOI

      10.1093/stmcls/sxac011

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] ERK5はSTAT3シグナルを介してグリオーマ幹細胞の幹細胞性および腫瘍形成能を制御する2022

    • Author(s)
      鈴木 紅音、深澤 和也、堀江 哲寛、村田 美怜、小林 正輝、檜井 栄一
    • Organizer
      日本薬学会第142年会
    • Related Report
      2021 Research-status Report
  • [Presentation] ERK5 regulates stemness and tumorigenicity of glioma stem cells by controlling the STAT3 signaling.2022

    • Author(s)
      鈴木 紅音、深澤 和也、堀江 哲寛、村田 美怜、小林 正輝、檜井 栄一
    • Organizer
      第95回日本薬理学会年会
    • Related Report
      2021 Research-status Report

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Published: 2021-10-22   Modified: 2024-01-30  

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