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Mechanism of IL-8 dependent regulation of cancer stem cells.

Research Project

Project/Area Number 19K16782
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Shimizu Masahiro  東京医科歯科大学, 難治疾患研究所, 助教 (00774358)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsがん幹細胞 / CSC / RAS / SOX2 / O-GlcNAc修飾 / cancer stem cells / IL-8 / O-GlcNAc / Cancer stem cells
Outline of Research at the Start

がん幹細胞は、腫瘍形成能、自己複製能、薬剤耐性能をもつ細胞集団であり、腫瘍形成やがんの転移、再発といった悪性化に関与する。これまでの研究から炎症性ケモカインであるIL-8ががん幹細胞の機能維持に重要なことがわかった。しかし、全てのがん幹細胞がIL-8依存的に制御されるわけではない。そこで本研究では、IL-8で制御される細胞集団の違いに着目し、IL-8依存的ながん幹細胞制御機構の解明を目指す。

Outline of Final Research Achievements

Cancer stem cells (CSCs) are a subset of tumor cells that exhibit self-renewal ability and generate the diverse cells that comprise the tumor. CSCs show increased quiescence and poor responses to conventional chemotherapy strategies that primarily kill proliferating cells. Therefore, CSCs are correlated with chemoresistance, invasion and relapse of cancer cells. In this study, we try to resolve a mechanism of CSCs population which is highly dependent on IL-8 using single cell analysis of sphere forming cells. However, we could not identify the IL-8 dependently regulated CSCs. In contrast, we showed that RAS/RAF/MAPK pathway-induced CDK1 activation is important for induction of O-GlcNAcylation, and this activation pathway is required for SOX2 expression and subsequent CSCs generation.

Academic Significance and Societal Importance of the Research Achievements

本研究ではがんを構成する細胞の不均一性に着目し、培養細胞を用いた3次元スフェロイドによるシングルセル解析を行ったが、本手法では実際のがんで見受けられる「細胞の不均一性」を完全には再現できなかったと推測される。予想された結果とは異なるが、患者由来の検体を用いた解析の重要性が改めて明らかとなった。一方、これまで遺伝子変異により生じるがん幹細胞発生機構は全く知られていなかったが、本研究ではがんにおいて頻発するRAS遺伝子の変異によるがん幹細胞発生機構を解明できた。したがって、本研究で明らかとなった機構を阻害する薬剤ががん幹細胞の発生を抑え、がんの転移や再発を抑制することができると期待される。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2022 2021 2020 2019 2018 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (3 results) Remarks (3 results)

  • [Journal Article] Enhanced O-GlcNAc modification induced by the RAS/MAPK/CDK1 pathway is required for SOX2 protein expression and generation of cancer stem cells2022

    • Author(s)
      Shimizu Masahiro、Shibuya Hiroshi、Tanaka Nobuyuki
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 2910-2910

    • DOI

      10.1038/s41598-022-06916-y

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] WNK1/HSN2 mediates neurite outgrowth and differentiation via a OSR1/GSK3β-LHX8 pathway2022

    • Author(s)
      Shimizu Masahiro、Shibuya Hiroshi
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 15858-15858

    • DOI

      10.1038/s41598-022-20271-y

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] WNK regulates Wnt signalling and β-Catenin levels by interfering with the interaction between β-Catenin and GID2020

    • Author(s)
      Sato Atsushi、Shimizu Masahiro、Goto Toshiyasu、Masuno Hiroyuki、Kagechika Hiroyuki、Tanaka Nobuyuki、Shibuya Hiroshi
    • Journal Title

      Communications Biology

      Volume: 3 Issue: 1 Pages: 666-666

    • DOI

      10.1038/s42003-020-01386-2

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] IL-8-induced O-GlcNAc modification via GLUT3 and GFAT regulates cancer stem cell-like properties in colon and lung cancer cells2018

    • Author(s)
      Shimizu Masahiro、Tanaka Nobuyuki
    • Journal Title

      Oncogene

      Volume: 38 Issue: 9 Pages: 1520-1533

    • DOI

      10.1038/s41388-018-0533-4

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] CXCR2依存的ながん幹細胞集団の解析2021

    • Author(s)
      清水 幹容, 澁谷 浩司, 田中 信之
    • Organizer
      第44回日本分子生物学会
    • Related Report
      2021 Research-status Report
  • [Presentation] IL-8依存的ながん幹細胞の制御機構の解析2020

    • Author(s)
      清水 幹容、田中 信之、澁谷 浩司
    • Organizer
      第43回日本分子生物学会
    • Related Report
      2020 Research-status Report
  • [Presentation] IL-8はGLUT3とGFATを介してO-GlcNAc修飾を誘導し、癌幹細胞能を制御する2019

    • Author(s)
      清水 幹容、田中 信之
    • Organizer
      日本分子生物学会
    • Related Report
      2019 Research-status Report
  • [Remarks] 遺伝子変異によるがん幹細胞の発生に重要なシグナル経路を発見

    • URL

      https://www.tmd.ac.jp/press-release/20220228-1/

    • Related Report
      2022 Annual Research Report
  • [Remarks] 「遺伝性の神経障害を引き起こすWNK1/HSN2変異体の機能解明」

    • URL

      https://www.tmd.ac.jp/press-release/20220926-1/

    • Related Report
      2022 Annual Research Report
  • [Remarks] 遺伝子変異によるがん幹細胞の発生に重要なシグナル経路を発見【清水幹容 助教、澁谷浩司 教授】

    • URL

      https://www.tmd.ac.jp/press-release/20220228-1/

    • Related Report
      2021 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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