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Molecular regulatory mechanisms for post-translational modifications of the water channel controlling salivary secretion.

Research Project

Project/Area Number 25462891
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Functional basic dentistry
Research InstitutionThe University of Tokushima

Principal Investigator

HASEGAWA Takahiro  徳島大学, 大学院医歯薬学研究部, 助教 (50447273)

Co-Investigator(Kenkyū-buntansha) YOSHIMURA Hiroshi  徳島大学, 大学院医歯薬学研究部, 教授 (90288845)
Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsアクアポリン / 翻訳後修飾 / リン酸化 / ユビキチン化 / 細胞内膜輸送 / 唾液腺 / アクアポリン5 / 細胞内シグナル伝達
Outline of Final Research Achievements

We investigated the post-translational modifications, short-chain ubiquitination and phosphorylation, of water channel aquaporin-5 (AQP5). Ca2+-induced AQP5 ubiquitination in human salivary gland cells may not play critical roles in the intracellular trafficking events, such as endocytosis, recycling, uptake into multivesicular bodies, and secretion. Although the roles of these modifications could not be fully elucidated in the present study, we identified two ubiquitin ligases for AQP5 ubiquitination and some AQP5 binding proteins, which may be a phosphorylation-dependent. In addition, we found little direct interactions between phosphorylation and ubiquitination of AQP5.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (2 results)

All 2014 Other

All Presentation (2 results)

  • [Presentation] ユビキチンリガーゼによるAQP5のユビキチン化亢進とダウンレギュレーション2014

    • Author(s)
      長谷川敬展、姚陳娟、赤松徹也、吉村弘
    • Organizer
      第56回歯科基礎医学会学術大会・総会
    • Place of Presentation
      福岡県福岡市(福岡国際会議場)
    • Year and Date
      2014-09-25 – 2014-09-27
    • Related Report
      2014 Research-status Report
  • [Presentation] ヒト唾液腺HSG細胞における構成的なAQP5 の取り込み

    • Author(s)
      長谷川敬展、姚陳娟、赤松徹也、吉村弘
    • Organizer
      第55回歯科基礎医学会学術大会・総会
    • Place of Presentation
      岡山県岡山市(岡山コンベンションセンター)
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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