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Stimulatory effect of V-ATPase of Insulin on proximal tubules

Research Project

Project/Area Number 17K16071
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Kidney internal medicine
Research InstitutionThe University of Tokyo

Principal Investigator

Nakamura Motonobu  東京大学, 医学部附属病院, 助教 (40459524)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords酸塩基平衡 / インスリン / 近位尿細管 / 腎生理 / mTOR / mTORC2 / V-ATPase / mTORC / mTORC1 / NHE3 / 腎臓内科学 / 水電解質代謝学 / ナトリウム輸送 / エンドサイトーシス
Outline of Final Research Achievements

We found that V-ATPase activity on the luminal side of renal proximal tubules was activated by insulin by using a freshly isolated proximal tubule which was obtained from mouse kidney cortex. This stimulation by insulin was almost completely suppressed by Akt inhibitor (Akt inhibitor VIII) and mTORC1/2 inhibitor (PP242), but not by mTORC1 inhibitor (Rapamycin). These results indicated that the stimulation of V-ATPase activity on the luminal side of renal proximal tubules by insulin is mediated via Akt/mTORC2 pathway.

Academic Significance and Societal Importance of the Research Achievements

インスリンは近位尿細管管腔側におけるナトリウム輸送のみならず、酸塩基平衡の制御に関与していることが示された。このことから、高インスリン血症が酸血症に関与している可能性が示唆された。さらに、この制御にはmTORC2が関与していることが示唆された。mTORC2選択的な阻害剤は、腎疾患の創薬ターゲットになる可能性があると考えられる。

Report

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

    (14 results)

All 2019 2018 2017

All Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (11 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Patency with antiplatelet treatment after vascular access intervention therapy: a retrospective observational study2018

    • Author(s)
      Mizuno Tomohito、Nakamura Motonobu、Satoh Nobuhiko、Tsukada Hiroyuki、Matsumoto Akihiko、Hamasaki Yoshifumi、Kume Haruki、Nangaku Masaomi
    • Journal Title

      Renal Replacement Therapy

      Volume: 4 Issue: 1

    • DOI

      10.1186/s41100-018-0184-5

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] SLC4A4 compound heterozygous mutations in exon?intron boundary regions presenting with severe proximal renal tubular acidosis and extrarenal symptoms coexisting with Turner’s syndrome: a case report2018

    • Author(s)
      Horita Shoko、Simsek Enver、Simsek Tulay、Yildirim Nilgun、Ishiura Hiroyuki、Nakamura Motonobu、Satoh Nobuhiko、Suzuki Atsushi、Tsukada Hiroyuki、Mizuno Tomohito、Seki George、Tsuji Shoji、Nangaku Masaomi
    • Journal Title

      BMC Medical Genetics

      Volume: 19 Issue: 1 Pages: 103-111

    • DOI

      10.1186/s12881-018-0612-y

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Functional coupling of V-ATPase and CLC-5.2017

    • Author(s)
      Satoh N, Suzuki M, Nakamura M, Suzuki A, Horita S, Seki G, Moriya .
    • Journal Title

      World Journal of Nephrology

      Volume: 6 Issue: 1 Pages: 14-20

    • DOI

      10.5527/wjn.v6.i1.14

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] EFFECTS OF PARATHYROID HORMONE ON GLUCOSE METABOLISM IN RENAL PROXIMAL TUBULES2019

    • Author(s)
      H. Tsukada, M. Nakamura, N. Satoh, T. Mizuno, Y. Sato, S. Horita, G. Seki, H. Kume, M. Nangaku, M. Suzuki
    • Organizer
      ISN World Congress of Nephrology 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Roles of Na+/HCO3- cotransporter NBCn2 in acid-base transport in the apical membrane of renal proximal tubules2019

    • Author(s)
      M. NAKAMURA, A. Suzuki, S. Horita, N. Satoh, H. Tsukada, Y. Sato, G. Seki, H. Kume, M. Nangaku, M. Suzuki
    • Organizer
      ISN World Congress of Nephrology 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A pivotal role of WNK1/OSR1 pathway in regulation of renal proximal sodium transport2018

    • Author(s)
      M. NAKAMURA, A. Suzuki, S. Horita, N. Satoh, H. Tsukada, Y. Sato, G. Seki, H. Kume, M. Suzuki, M. Nangaku
    • Organizer
      American Society of Nephrology annual meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 副甲状腺ホルモンは近位尿細管ナトリウム輸送と糖新生に関与している2018

    • Author(s)
      塚田 弘之, 佐藤 信彦, 中村 元信, 水野 智仁, 佐藤 悠佑, 堀田 晶子, 関 常司, 鈴木 正志, 久米 春喜, 南学 正臣
    • Organizer
      第61回日本腎臓学会学術総会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 近位尿細管ナトリウム輸送調節におけるWNK1/OSR1経路の意義2018

    • Author(s)
      中村 元信, 佐藤 信彦, 塚田 弘之, 水野 智仁, 佐藤 悠佑, 堀田 晶子, 関 常司, 鈴木 正志, 久米 春喜, 南学 正臣
    • Organizer
      第61回日本腎臓学会学術総会
    • Related Report
      2018 Annual Research Report
  • [Presentation] VAIVT後のVascular Access開存における抗血小板薬の有用性2018

    • Author(s)
      水野 智仁, 中村 元信, 佐藤 信彦, 塚田 弘之, 一色 玲, 松本 明彦, 濱崎 敬文, 久米 春喜, 南学 正臣
    • Organizer
      第63回日本透析医学会学術集会・総会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Stimulation of proximal tubule sodium transport by insulin is mediated via Akt2/mTORC2 pathway2018

    • Author(s)
      Motonobu Nakamura, Masashi Suzuki, Nobuhiko Satoh, Atsushi Suzuki, Hiroyuki Tsukada, George Seki, Yusuke Sato, Yukio Homma, Shoko Horita, Masaomi Nangaku
    • Organizer
      International Society of Nephrology, Frontiers meeting 2018 Tokyo
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] A novel case of SLC4A4 compound heterozygous mutationsins exon-intron boundary regions presenting with severe proximal renal tubular acidosis and extrarenal symptoms2018

    • Author(s)
      Horita S, Simsek E, Simsek T, Ishiura H, Nakamura M, Satoh N, Seki G, Tsuji S, Nangaku M
    • Organizer
      International Society of Nephrology, Frontiers meeting 2018 Tokyo
    • Related Report
      2017 Research-status Report
  • [Presentation] Insulin suppresses gluconeogenesis in renal proximal tubules via IRS1/Akt2/mTORC pathway.2017

    • Author(s)
      Motonobu Nakamura, Masashi Suzuki, Nobuhiko Satoh, Atsushi Suzuki, Hiroyuki Tsukada, George Seki, Yusuke Sato, Yukio Homma, Shoko Horita, Masaomi Nangaku
    • Organizer
      Kidney Week 2017: American Society of Nephrology Annual Meeting Newolins, New Orleans U.S.A.
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] インスリンはIRS1/Akt2/mTORCを介して近位尿細管糖新生を抑制する2017

    • Author(s)
      中村 元信,鈴木 正志,佐藤 信彦,鈴木 淳司,塚田 弘之,関 常司,佐藤 悠佑,本間 之夫,堀田 晶子,南学 正臣
    • Organizer
      日本腎臓学会第60回学術総会 、仙台 日本
    • Related Report
      2017 Research-status Report
  • [Presentation] 近位尿細管ナトリウム輸送調節におけるWNK1/OSR1/SPAKの意義2017

    • Author(s)
      中村 元信, 鈴木 正志,佐藤 信彦,鈴木 淳司,塚田 弘之,関 常司,佐藤 悠佑,本間 之夫,堀田 晶子,南学 正臣
    • Organizer
      日本腎臓学会第60回学術総会 、仙台 日本
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2024-12-25  

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