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Acid adaptation of cells via lysosomal exocytosis

Research Project

Project/Area Number 20K07312
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48040:Medical biochemistry-related
Research InstitutionKyoto University (2022-2023)
Osaka University (2020-2021)

Principal Investigator

Funato Yosuke  京都大学, 工学研究科, 准教授 (60505775)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
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)
KeywordsPRL / がん悪性化 / 酸性環境適応 / lysosomal exocytosis / 酸性適応 / リソソーム
Outline of Research at the Start

本研究は細胞のpH応答、特に酸性環境に適応する仕組みとその意義
を解明する。悪性がん組織ではpH 6.5などの弱酸性の環境にあるが、この有害な環境下でなぜがん細胞が増殖し続けられるのかわかっていない。私はがん悪性化のドライバー分子PRLの高発現で細胞が最もよく増殖する環境pHが6.5へシフトすることを見つけた。PRL高発現細胞ではリソソーム膜が細胞膜と融合し、高濃度H+などリソソーム内の物質を放出するlysosomal exocytosisが生じることも見つけており、本研究では細胞がlysosomal exocytosisを介して酸性環境に適応する仕組みと、そのがんにおける重要性を明らかにする。

Outline of Final Research Achievements

In this study, we investigated the response of cells against environmental pH, typically focusing on the mechanism of acid adaptation of cancer cells via PRL-mediated activation of lysosomal exocytosis and its importance in cancer malignancy. As a result, we found that activation of lysosomal exocytosis is necessary for cancer cells to adapt to acidic environments upon PRL overexpression and for PRL-induced tumorigenesis in mice, and we also identified several new molecules involved in this PRL-dependent adaptation to acidic environments.

Academic Significance and Societal Importance of the Research Achievements

腫瘍組織が酸性化していることは古くから知られているが、同じ「腫瘍内微小環境」として知られる低酸素などと比べその研究は大きく遅れている。本研究により細胞のpH応答性についての理解が進み酸性環境適応の機構解明に向けての取り組みが促進されることで、新たながん悪性化機構の理解や新規診断・治療法の開発へとつながる可能性が考えられる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (25 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (4 results) Journal Article (12 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 12 results,  Open Access: 9 results) Presentation (9 results) (of which Int'l Joint Research: 1 results,  Invited: 7 results)

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

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] The University of Oxford(英国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Fudan University(中国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] McGill University(カナダ)

    • Related Report
      2020 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] 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
  • [Journal Article] Structural basis for the Mg2+ recognition and regulation of the CorC Mg2+ transporter2021

    • Author(s)
      Huang Yichen、Jin Fei、Funato Yosuke、Xu Zhijian、Zhu Weiliang、Wang Jing、Sun Minxuan、Zhao Yimeng、Yu Ye、Miki Hiroaki、Hattori Motoyuki
    • Journal Title

      Science Advances

      Volume: 7 Issue: 7

    • DOI

      10.1126/sciadv.abe6140

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Magnesium efflux from Drosophila Kenyon cells is critical for normal and diet-enhanced long-term memory2020

    • Author(s)
      Wu Yanying、Funato Yosuke、Meschi Eleonora、Jovanoski Kristijan D、Miki Hiroaki、Waddell Scott
    • Journal Title

      eLife

      Volume: 9

    • DOI

      10.7554/elife.61339

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Oncogenic PRL Protein Causes Acid Addiction of Cells by Stimulating Lysosomal Exocytosis.2020

    • Author(s)
      Yosuke Funato, Atsushi Yoshida, Yusuke Hirata, Osamu Hashizume, Daisuke Yamazaki, Hiroaki Miki
    • Journal Title

      Developmental cell

      Volume: 55 Issue: 4 Pages: 387-397

    • DOI

      10.1016/j.devcel.2020.08.009

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] PRL3 pseudophosphatase activity is necessary and sufficient to promote metastatic growth2020

    • Author(s)
      Kozlov Guennadi、Funato Yosuke、Chen Yu Seby、Zhang Zhidian、Illes Katalin、Miki Hiroaki、Gehring Kalle
    • Journal Title

      Journal of Biological Chemistry

      Volume: 295 Issue: 33 Pages: 11682-11692

    • DOI

      10.1074/jbc.ra120.014464

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Excessive Mg 2+ Impairs Intestinal Homeostasis by Enhanced Production of Adenosine Triphosphate and Reactive Oxygen Species2020

    • Author(s)
      Osamu Hashizume , Yosuke Funato , Daisuke Yamazaki, Hiroaki Miki
    • Journal Title

      Antioxid Redox Signal .

      Volume: - Issue: 1 Pages: 20-34

    • DOI

      10.1089/ars.2019.7951

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] がん細胞の酸性環境適応におけるlysosomal exoctytosisの重要性とその制御2023

    • Author(s)
      船戸洋佑、橋爪脩、三木裕明
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] pHが織りなすがん生物学2023

    • Author(s)
      船戸洋佑, 橋爪脩, 三木裕明
    • Organizer
      日本生理学会第100回記念大会
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] pH/CO2 がもたらした有機物創成と生命の pH 適応戦略2022

    • Author(s)
      高橋重成, 船戸洋佑
    • Organizer
      pH/CO2が支える地球上の生命
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 上皮膜上のMg2+排出分子CNNMの阻害を介した腫瘍内酸性環境への適応機構2022

    • Author(s)
      船戸洋佑、橋爪脩、三木裕明
    • Organizer
      2022年度生理研研究会「上皮膜輸送と細胞極性形成機構の統合的理解を目指して」
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Maintenance of magnesium homeostasis by CNNM and various diseases caused by its disruption2022

    • Author(s)
      船戸洋佑、橋爪脩、山崎大輔、三木裕明
    • Organizer
      第99回日本生理学会大会
    • Related Report
      2021 Research-status Report
    • 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] 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] がん細胞の酸性環境への新規適応機構「acid addiction」の発見2020

    • Author(s)
      船戸 洋佑, 橋爪 脩, 吉田 篤, 本田 茉子, 山崎 大輔, 三木 裕明
    • Organizer
      第93回日本生化学会大会
    • Related Report
      2020 Research-status Report
  • [Presentation] CNNMによるマグネシウムの輸送とその医学生物学的重要性2020

    • Author(s)
      船戸 洋佑, 橋爪 脩, 吉田 篤, 山崎 大輔, 三木 裕明
    • Organizer
      2020年度生理研研究会『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
      2020 Research-status Report
    • Invited

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Published: 2020-04-28   Modified: 2025-01-30  

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