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Research on pH-dependent cell death program that occurs in the mitotic phase of cancer cells

Research Project

Project/Area Number 21K19406
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 50:Oncology and related fields
Research InstitutionKyoto University (2022-2023)
Osaka University (2021)

Principal Investigator

Miki Hiroaki  京都大学, 工学研究科, 教授 (80302602)

Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords細胞死
Outline of Research at the Start

悪性化したがん組織は酸性化しており、がん細胞のpH応答性は通常と大きく異なっていることが知られる。本研究では、発がん因子PRLによって引き起こされる「弱アルカリ環境で特異的に起こる細胞分裂に共役した細胞死」に焦点を絞って解析を進める。培養系の細胞を用いて細胞分裂の状況を詳細に調べ、細胞死と細胞分裂進行の関連やそのシグナル伝達の分子メカニズムを明らかにする。さらにマウスを用いた解析によって生体内での腫瘍形成におけるその重要性についても追究する。

Outline of Final Research Achievements

In this study, we analyzed the unique pH-dependent cell death that occurs in cells that highly express the oncogenic protein PRL. When cells overexpressing PRL were cultured under weakly alkaline conditions, cell death accompanied by abnormal chromosome segregation occurred during the M phase of the cell cycle. Although cell death was not noticeable in a physiological pH environment, some abnormality was observed in chromosome alignment during the division phase, and further abnormalities in the number of chromosomes occurred with continued culture. Abnormalities in the number of chromosomes are also a characteristic of malignant cancer cells, and can be considered as the basic molecular mechanism for the progression of cancer malignancy due to PRL overexpression.

Academic Significance and Societal Importance of the Research Achievements

がん悪性化にはたらくPRLの分子機能解析から見つけたユニークな細胞死に着目した解析を進めることで、細胞分裂期の染色体アラインメントにおける異常を新たに見つけることができた。実際にPRL高発現細胞を培養し続けることで染色体数の異常が生じることも示され、新たながん悪性化進展機構の解明にもつながる重要な研究成果と考えられる。また、細胞のエネルギー状態に応じて活性化されるAMPキナーゼのキネトコア特異的な活性化異常を見出しており、このキナーゼの活性調節における興味深い一面を明らかにできた点でも重要な意義がある。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (23 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 7 results) Presentation (13 results) (of which Int'l Joint Research: 1 results,  Invited: 8 results)

  • [Int'l Joint Research] Fudan University(中国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Fudan University(中国)

    • Related Report
      2022 Research-status Report
  • [Journal Article] Intestinal Mg2+ accumulation induced by cnnm mutations decreases the body size by suppressing TORC2 signaling in Caenorhabditis elegans2024

    • Author(s)
      Hashizume Osamu、Kawabe Tomofumi、Funato Yosuke、Miki Hiroaki
    • Journal Title

      Developmental Biology

      Volume: 509 Pages: 59-69

    • DOI

      10.1016/j.ydbio.2024.02.007

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] PRL stimulates mitotic errors by suppressing kinetochore-localized activation of AMPK during mitosis2022

    • Author(s)
      Ryu Kajung、Yoshida Atsushi、Funato Yosuke、Yamazaki Daisuke、Miki Hiroaki
    • Journal Title

      Cell Structure and Function

      Volume: 47 Issue: 2 Pages: 75-87

    • DOI

      10.1247/csf.22034

    • ISSN
      0386-7196, 1347-3700
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Phosphatase‐independent role of phosphatase of regenerating liver in cancer progression2022

    • Author(s)
      Funato Yosuke、Hashizume Osamu、Miki Hiroaki
    • Journal Title

      Cancer Science

      Volume: 114 Issue: 1 Pages: 25-33

    • DOI

      10.1111/cas.15625

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A novel role for PRL in regulating epithelial cell density by inducing apoptosis at confluence2022

    • Author(s)
      Lohani Sweksha、Funato Yosuke、Akieda Yuki、Mizutani Kiyohito、Takai Yoshimi、Ishitani Tohru、Miki Hiroaki
    • Journal Title

      Journal of Cell Science

      Volume: 135 Issue: 2 Pages: 1-14

    • DOI

      10.1242/jcs.258550

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The emerging roles and therapeutic potential of cyclin M/CorC family of Mg2+ transporters2022

    • Author(s)
      Funato Yosuke、Miki Hiroaki
    • Journal Title

      Journal of Pharmacological Sciences

      Volume: 148 Issue: 1 Pages: 14-18

    • DOI

      10.1016/j.jphs.2021.09.004

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Gut bacteria identified in colorectal cancer patients promote tumourigenesis via butyrate secretion2021

    • Author(s)
      Okumura Shintaro、Konishi Yusuke、Narukawa Megumi、Sugiura Yuki、Yoshimoto Shin、Arai Yuriko、Sato Shintaro、Yoshida Yasuo、Tsuji Shunya、Uemura Ken、Wakita Masahiro、Matsudaira Tatsuyuki、Matsumoto Tomonori、Kawamoto Shimpei、Takahashi Akiko、Itatani Yoshiro、Miki Hiroaki ら
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 5674-5674

    • DOI

      10.1038/s41467-021-25965-x

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Importance of the renal ion channel TRPM6 in the circadian secretion of renin to raise blood pressure2021

    • Author(s)
      Funato Yosuke、Yamazaki Daisuke、Okuzaki Daisuke、Yamamoto Nobuhiko、Miki Hiroaki
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 3683-3683

    • DOI

      10.1038/s41467-021-24063-2

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification and mechanistic analysis of an inhibitor of the CorC Mg2+ transporter2021

    • Author(s)
      Huang Yichen、Mu Kaijie、Teng Xinyu、Zhao Yimeng、Funato Yosuke、Miki Hiroaki、Zhu Weiliang、Xu Zhijian、Hattori Motoyuki
    • Journal Title

      iScience

      Volume: 24 Issue: 4 Pages: 102370-102370

    • DOI

      10.1016/j.isci.2021.102370

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] マグネシウムイオントランスポーターCNNMのがん悪性化進展における役割2023

    • Author(s)
      三木 裕明, 船戸 洋佑, 橋爪 脩
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] がん細胞の酸性環境適応におけるlysosomal exocytosisの重要性とその制御2023

    • Author(s)
      船戸 洋佑, 三木 裕明
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] PRL発現極小化による細胞内Mg2+の減少はNF-κB経路活性化を介したアポトーシスを誘導する2023

    • Author(s)
      河村 小雪, 船戸 洋佑, 三木 裕明
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] マグネシウム調節の分子病態生化学2023

    • Author(s)
      三木 裕明
    • Organizer
      SBCセミナー
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 活性硫黄の化学修飾による発がん因子PRLの機能制御2022

    • Author(s)
      三木 裕明、船戸 洋佑
    • Organizer
      第95回日本生化学会大会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Regulation of oncogenic protein PRL by diverse chemical modifications of its active cysteine2022

    • Author(s)
      Hiroaki Miki, Yosuke Funato
    • Organizer
      Redox Week in Sendai 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Mg2+トランスポーターCNNMの生物学的重要性と治療標的としての可能性2022

    • Author(s)
      船戸洋佑、橋爪脩、山崎大輔、三木裕明
    • Organizer
      第95回日本薬理学会年会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Maintenance of magnesium homeostasis by CNNM and various diseases caused by its disruption2022

    • Author(s)
      Yosuke Funato, Osamu Hashizume, Daisuke Yamazaki, Hiroaki Miki
    • Organizer
      第99回日本生理学会大会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 発がん因子PRLの活性中心システイン硫黄原子の化学修飾による機能制御2022

    • Author(s)
      三木 裕明、船戸 洋佑
    • Organizer
      レドックスR&D戦略委員会 春のシンポジウム
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] A novel role of PRL in regulating epithelial cell density by inducing apoptosis at confluence2021

    • Author(s)
      Sweksha Lohani, 船戸 洋佑, 龝枝 佑紀, 石谷 太, 三木 裕明
    • Organizer
      生理研研究会『上皮膜輸送の多様性・調和機構を基盤とする異分野融合研究の創出』
    • Related Report
      2021 Research-status Report
  • [Presentation] がん細胞の酸性環境適応機構「acid addiction」の分子メカニズム解析2021

    • Author(s)
      船戸洋佑、本田茉子、山崎大輔、三木裕明
    • Organizer
      第94回日本生化学会大会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 大腸がん浸潤・転移に関与するがん細胞の探索2021

    • Author(s)
      山崎 大輔、三木 裕明
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] cnnm変異により線虫のボディサイズが縮小する仕組みの解析2021

    • Author(s)
      橋爪 脩、川邊 智史、船戸 洋佑、三木 裕明
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report

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Published: 2021-07-13   Modified: 2025-01-30  

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