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Molecular identity of TASK channels in adrenal medullary cells: A research with knockout mice

Research Project

Project/Area Number 17K08555
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field General physiology
Research InstitutionUniversity of Occupational and Environmental Health, Japan

Principal Investigator

Inoue Masumi  産業医科大学, 医学部, 教授 (40223276)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsアシドーシス / 副腎髄質細胞 / カテコールアミン / TASKチャネル / PC12細胞 / TASK1チャネル / センサー / p11 / TALK2チャンネル / gene knockout / 分泌 / TALK2チャネル / 生理学 / チャネル / 副腎髄質
Outline of Final Research Achievements

A decrease in external pH induces catecholamine secretion through inhibiting TASK1-like channel activity in rat adrenal medullary chromaffin (AMC) cells. However, the molecular identity of TASK channels remains an open question. Thus, a gene knockout approach was used to elucidate the molecular structure of TASK1-like channels in mouse AMC cells. The development of a depolarizing inward current or catecholamine secretion in response to a decrease in external pH was abolished by deletion of the TASK1 gene, but not by that of the TASK3. TASK1-like immunoreactive (IR) material was predominantly located at the cell periphery in mouse AMC cells, whereas TASK3-like IR material was minimally present at the cell periphery. These results indicate that homomeric TASK1 channels function as an acid sensor in mouse AMC cells.

Academic Significance and Societal Importance of the Research Achievements

我々が激しい運動をすると、血中のアドレナリンの濃度は著明に増加する。この副腎髄質細胞から分泌されたアドレナリンは、筋の疲労からの回復に関与する。このアドレナリンの分泌には、細胞外液のpHの低下によるTASKチャネル活性の減少が関与すると考えられている。ただ、副腎髄質細胞に発現しているTASKチャネルの分子構造は不明であった。本研究は、遺伝子ノックアウト法をもちいて、マウス副腎髄質細胞に発現しているTASKチャネルがTASK1ホモ二量体であることを明らかにした。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (14 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results) Presentation (6 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results)

  • [Int'l Joint Research] universite Cote d'Azur INSERM CNRS(フランス)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Muscarinic receptor stimulation induces TASK1 channel endocytosis through a PKC-Pyk2-Src pathway in PC12 cells.2020

    • Author(s)
      Matsuoka H, Harada K, Mashima K, Inoue M.
    • Journal Title

      Cell Signal.

      Volume: 65 Pages: 109434-109434

    • DOI

      10.1016/j.cellsig.2019.109434

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mechanisms for pituitary adenylate cyclase-activating polypeptide-induced increase in excitability in guinea-pig and mouse adrenal medullary cells.2020

    • Author(s)
      Inoue M, Harada K, Matsuoka H.
    • Journal Title

      Eur J Pharmacol

      Volume: 5;872 Pages: 172956-172956

    • DOI

      10.1016/j.ejphar.2020.172956

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Differences among muscarinic agonists in M1 receptor-mediated nonselective cation channel activation and TASK1 channel inhibition in adrenal medullary cells.2019

    • Author(s)
      Inoue M, Harada K, Matsui M, Matsuoka H.
    • Journal Title

      Eur J Pharmacol.

      Volume: 15;843 Pages: 104-112

    • DOI

      10.1016/j.ejphar.2018.11.021

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Lack of p11 expression facilitates acidity-sensing function of TASK1 channels in mouse adrenal medullary cells2019

    • Author(s)
      Inoue Masumi、Matsuoka Hidetada、Lesage Florian、Harada Keita
    • Journal Title

      The FASEB Journal

      Volume: 33 Issue: 1 Pages: 455-468

    • DOI

      10.1096/fj.201800407rr

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Expression and regulation of M-type K+ channel in PC12 cells and rat adrenal medullary cells2018

    • Author(s)
      Harada Keita、Matsuoka Hidetada、Inoue Masumi
    • Journal Title

      Cell and Tissue Research

      Volume: 印刷中 Issue: 3 Pages: 457-468

    • DOI

      10.1007/s00441-018-2809-y

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Muscarinic receptors in adrenal chromaffin cells: physiological role and regulation of ion channels2017

    • Author(s)
      Inoue Masumi、Matsuoka Hidetada、Harada Keita、Kao Lung-Sen
    • Journal Title

      Pflugers Arch

      Volume: 470 Issue: 1 Pages: 29-38

    • DOI

      10.1007/s00424-017-2047-2

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Molecular mechanism for muscarinic M1 receptor-mediated endocytosis of TWIK-related acid-sensitive K+ 1 channels in rat adrenal medullary cells2017

    • Author(s)
      Matsuoka Hidetada、Inoue Masumi
    • Journal Title

      Journal of Physiology

      Volume: 595 Issue: 22 Pages: 6851-6867

    • DOI

      10.1113/jp275039

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] The roles of p11 for localization and heteromeric channel formation of TASK1 and TASK3 isoforms2019

    • Author(s)
      Hidetada MATSUOKA, Keita HARADA, Masumi INOUE
    • Organizer
      9th FAOPS Congress
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pituitary adenylate cyclase-activating polypeptide activates Na+-permeable cation channels in mouse and guinea-pig adrenal medullary cells2018

    • Author(s)
      Inoue Masumi, Matsuoka Hidetada, Harada Keita
    • Organizer
      Europhysiology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Regulation of TRPC channels by muscarinic receptors in guinea-pig adrenal medullary cells2018

    • Author(s)
      Inoue Masumi, Matsuoka Hidetada, Harada Keita
    • Organizer
      7th Focused Meeting on Cell Signalling
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] マウス副腎髄質細胞においてp11蛋白の発現の欠如は、TASK1チャネルの酸性感知能を促進する2018

    • Author(s)
      井上真澄、松岡秀忠、原田景太
    • Organizer
      第69回西日本生理学会
    • Related Report
      2018 Research-status Report
  • [Presentation] Molecular identity and functions of TASK1-like channels in adrenal medullary cells2017

    • Author(s)
      Inoue M, Matsuoka H, Harada K
    • Organizer
      19th ISCCB
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] TASK1 channels as a pH sensor in mouse adrenal medullary cells: analysis with gene knockout2017

    • Author(s)
      Inoue M, Matsuoka H, Harada K
    • Organizer
      Experimental biology 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2021-02-19  

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