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Molecular ON-OFF mechanisms of ATP-releasing maxi-anion channel opening

Research Project

Project/Area Number 17K19517
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Biomedical structure and function and related fields
Research InstitutionNational Institute for Physiological Sciences

Principal Investigator

Okada Yasunobu  生理学研究所, なし, 名誉教授 (10025661)

Co-Investigator(Kenkyū-buntansha) 岡田 俊昭  生理学研究所, 生体機能調節研究領域, 研究員 (00373283)
Project Period (FY) 2017-06-30 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywordsアニオンチャネル / Maxi-Cl / SLCO2A1 / アネキシンA2 / S100A10 / 生理学 / ATP放出
Outline of Final Research Achievements

Maxi-anion channel (Maxi-Cl) is ubiquitously expressed and involved in a number of important cell functions especially by serving as an ATP release pathway. We recently identified SLCO2A1 as its essential core component. However, the regulatory component required for the channel activation/inactivation remains unidentified. In the present study, we have elucidated that an actin-binding protein, annexinA2 (ANXA2), confers protein tyrosine dephosphorylation dependence of Maxi-Cl channel by binding to SLCO2A1. Also, we have shown that S100A10, a binding partner of ANXA2, confers intracellular Ca2+ dependence of Maxi-Cl. Thus, it is concluded that AnXA2-S100A10 represents the regulatory component of Maxi-Cl/SLCO2A1 channel which is dependent on protein tyrosine dephosphorylation and intracellular Ca2+.

Academic Significance and Societal Importance of the Research Achievements

Maxi-Clチャネルは、細胞容積調節、尿細管-糸球体フィードバックや大腸脂肪酸吸収などの生理的過程に関与する重要分子である。そのコア分子としてのSLCO2A1の同定は私達によって2017年に行われたが、その開閉を制御する分子メカニズムは不明であった。本研究ではそれを世界に先駆けて解明した。Maxi-Clチャネルは、虚血および虚血・再灌流時においても活性化され、脳アストロサイトや心筋細胞からのATPやグルタミン酸などの細胞外シグナル分子の放出路を与える。したがって、Maxi-Clのコア分子のみならず今回発見されたその制御分子は、今後、脳・心臓における虚血障害に対する治療標的となる可能性がある。

Report

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

    (23 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (2 results) Journal Article (8 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 8 results,  Open Access: 5 results,  Acknowledgement Compliant: 1 results) Presentation (12 results) (of which Int'l Joint Research: 5 results) Remarks (1 results)

  • [Int'l Joint Research] ウズベキスタン科学アカデミー生物有機化学研究所/タシュケント国立大学(ウズベキスタン)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] ウズベキスタン科学アカデミー生物有機化学研究所(ウズベキスタン)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Cryo-EM structure of the volume-regulated anion channel LRRC8D isoform.2020

    • Author(s)
      R. Nakamura, T. Numata, G. Kasuya, T. Yokoyama, T. Nishizawa, T. Kusakizako, T. Kato, T. Hagino, N. Dohmae, M. Inoue, K. Watanabe, H. Ichijo, M. Kikkawa, M. Shirouzu, T.J. Jentsch, R. Ishitani, Y. Okada, O. Nureki
    • Journal Title

      Communication Biology

      Volume: -

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Herbal components of Japanese Kampo medicines exert laxative actions in colonic epithelium cells via activation of BK and CFTR channels2019

    • Author(s)
      Numata Tomohiro、Sato-Numata Kaori、Okada Yasunobu
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 15554-15554

    • DOI

      10.1038/s41598-019-52171-z

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] TRPM7 is involved in acid-induced necrotic cell death in a manner sensitive to progesterone in human cervical cancer cells2019

    • Author(s)
      Numata Tomohiro、Sato-Numata Kaori、Okada Yasunobu
    • Journal Title

      Physiological Reports

      Volume: 7 Issue: 13

    • DOI

      10.14814/phy2.14157

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cellular mechanism for herbal medicine Junchoto to facilitate intestinal Cl-/water secretion that involves cAMP-dependent activation of CFTR2018

    • Author(s)
      Tomohiro Numata, Kaori Sato-Numata, Yasunobu Okada, Ryuji Inoue
    • Journal Title

      Journal of Natural Medicines

      Volume: 印刷中 Issue: 3 Pages: 694-705

    • DOI

      10.1007/s11418-018-1207-9

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Molecular identities and ATP release activities of two types of volume-regulatory anion channels, VSOR and Maxi-Cl.2018

    • Author(s)
      Y. Okada, T. Okada, M.R. Islam and R.Z. Sabirov
    • Journal Title

      Curr. Top. Membr.

      Volume: 81 Pages: 125-176

    • DOI

      10.1016/bs.ctm.2018.07.004

    • ISBN
      9780128154564
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The organic anion transporter SLCO2A1 constitutes the core component of the Maxi-Cl channel.2017

    • Author(s)
      Ravshan Z. Sabirov, Petr.G. Merzlyak, Toshiaki Okada, Md. Rafiqul Islam, Hiromi Uramoto, Tomoko Mori, Yumiko Makino, Hiroshi Matsuura, Yu Xie & Yasunobu. Okada
    • Journal Title

      The EMBO J.

      Volume: 36 Issue: 22 Pages: 3309-3324

    • DOI

      10.15252/embj.201796685

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Specific and essential but not sufficient roles of LRRC8A in the activity of volume-sensitive outwardly rectifying anion channel (VOSR).2017

    • Author(s)
      T. Okada, Md.R. Islam, N.A. Tsiferova, Y. Okada & R.Z. Sabirov
    • Journal Title

      Channels (Austin)

      Volume: 11 Issue: 2 Pages: 109-120

    • DOI

      10.1080/19336950.2016.1247133

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Distinct contributions of LRRC8A and its paralogs to the VSOR anion channel from those of the ASOR anion channel2017

    • Author(s)
      Kaori Sato-Numata, Tomohiro Numata, Ryuji Inoue, Ravshan Z. Sabirov and Yasunobu Okada.
    • Journal Title

      Channels

      Volume: 11(2) Issue: 2 Pages: 167-172

    • DOI

      10.1080/19336950.2016.1230574

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Effect of ATP released from the maxi-anion channel on left ventricular contractile function in Langendorff-perfused mouse heart model.2020

    • Author(s)
      H Matsuura, A Kojima, Y Fukushima, Y Xie, X Mi, RZ Sabirov, Y Okada
    • Organizer
      第97回 日本生理学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Ni+-sensitive Ca2+ channels are involved in the exocytotic secretion from somata/dendrites in vasopressin neurons.2020

    • Author(s)
      K Sato-Numata, T Numata, Y Ueta, Y Okada
    • Organizer
      第97回 日本生理学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Appropriate combinations of herbal components of Japanese Kampo medicines exert laxative actions in colonic epithelium cells through activation of K and Cl channels.2020

    • Author(s)
      T Numata, K Sato-Numata, Y Okada, R Inoue
    • Organizer
      第97回 日本生理学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Reexamination of the roles of LRRC8 and TTYH in the molecular identity of volume-sensitive outwardly rectifying anion channel VSOR.2020

    • Author(s)
      Y Okada, T Okada, K Sato-Numata, T Numata
    • Organizer
      第97回 日本生理学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Sensitivity of voltage-dependent Ca2+ channels in rat AVP neurons to an anthranilic acid derivative.2019

    • Author(s)
      Sato K, Numata T, Ueta U, Okada Y
    • Organizer
      9th Congress of the Federation of The Asia and Oceanian Physiological Societies (FAOPS 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A calcium-binding protein S100A10 is a regulator of Maxi-Cl channel activity.2019

    • Author(s)
      Islam Md R, Okada T, Toychiev A, Sabirob RZ, Okada Y
    • Organizer
      9th Congress of the Federation of The Asia and Oceanian Physiological Societies (FAOPS 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Kampo medicine Junchoto promotes intestinal Cl-/water secretion by cAMP-dependent CFTR activation.2019

    • Author(s)
      Numata T, Sato-Numata K, Okada Y, Inoue R
    • Organizer
      9th Congress of the Federation of The Asia and Oceanian Physiological Societies (FAOPS 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Examination of the contribution of SLCO2A1 to maxi-anion channel currents in murine cells.2019

    • Author(s)
      Okada T, Okada Y
    • Organizer
      9th Congress of the Federation of The Asia and Oceanian Physiological Societies (FAOPS 2019)
    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] A calcium-binding protein S100A10 is a regulator of Maxi-Cl channel activity.2019

    • Author(s)
      Islam Md R, Okada T, Toychiev A, Sabirob RZ, Okada Y
    • Organizer
      9th Congress of the Federation of The Asia and Oceanian Physiological Societies
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] SLCO2A1 is a pore-forming component of Maxi-Cl channel.2018

    • Author(s)
      Okada T, Islam Md R, Merzlyak GP, Sabirov RZ, Okada Y
    • Organizer
      第95回 日本生理学会大会
    • Related Report
      2017 Research-status Report
  • [Presentation] SLCO2A1 is involved in a pathway for ATP release from cultured cells and Langendorff-perfused hearts.2018

    • Author(s)
      Islam Md R, Okada T, Matsuura H, Uramoto H, Sabirov RZ, Okada Y
    • Organizer
      第95回 日本生理学会大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Properties and roles of flufenamate-sensitive ion channels stimulated by hyperosmolality in vasopressin neurons.2018

    • Author(s)
      Sato-Numata K, Numata T, Ueda Y, Inoue R, Okada Y
    • Organizer
      第95回 日本生理学会大会
    • Related Report
      2017 Research-status Report
  • [Remarks] 自然科学研究機構生理学研究所ホームページ

    • URL

      http://www.nips.ac.jp/release/2017/10/atp_2.html

    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-07-21   Modified: 2021-02-19  

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