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Does aquapoirn-6 influx anion in immature secretory granules during maintainance of acidic pH?

Research Project

Project/Area Number 24791986
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Functional basic dentistry
Research InstitutionShowa University (2013-2014)
Nihon University (2012)

Principal Investigator

MIWAKO Fukushima  昭和大学, 歯学部, 助教 (90548273)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords唾液腺 / 分泌顆粒 / 分泌顆粒成熟 / 酸性オルガネラ / 陰イオンチャネル / アクアポリン / 遺伝子サイレンシング / 融合タンパク質 / 耳下腺 / 細胞内小器官 / 口腔生理学
Outline of Final Research Achievements

Aquaporin-6(AQP6) is an acid-activated, anion permeated member of aquaporin water channel familiy. We hypothesized that AQP6 is activated in immature secretory granules of salivary gland acinar cells which is maintained with acidic condition while becoming mature state. To determine this hypothesis, we synthesized secretory granules-specific pH indicator and applied to primary salivary gland cells. Newly synthesized pH indicator clealy showed inside pH of salivary secretry granules, however, acidic granules were not shown with pH indicator. On the other hand, AQP6 was accumulated in immature granule membranes rather than mature granule membranes detected with Western blotting of isolated salivary granule membranes. These result suggest that AQP6 might important role of maturation in salivary gland cells.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (8 results)

All 2014 2013

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (4 results)

  • [Journal Article] A novel animal model for dry mouth: E2f1-deficient NOD/SCID mice.2014

    • Author(s)
      Satoh K, Narita T, Matsuki-Fukushima M, Okabayashi K, Yamazaki F, Arai T, Ito T, Senpuku H, Sugiya H.
    • Journal Title

      J Oral Biosci

      Volume: 56 Issue: 1 Pages: 18-22

    • DOI

      10.1016/j.job.2013.08.004

    • Related Report
      2013 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sorting of a HaloTag protein that has only a signal peptide sequence into exocrine secretory granules without protein aggregation.2013

    • Author(s)
      Fujita-Yoshigaki J, Matsuki-Fukushima M, Yokoyama M, Katsumata-Kato O.
    • Journal Title

      Am J Physiol Gastrointest Liver Physiol.

      Volume: 305(10) Issue: 10 Pages: G685-G696

    • DOI

      10.1152/ajpgi.00093.2013

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Expression and Localization of Aqua-glyceroporins AQP3 and AQP9 in Rat Oral Epithelia.2013

    • Author(s)
      Poveda M, Hashimoto S, Matsuki-Fukushima M, Sasaki H, Sakurai K, Masaki S.
    • Journal Title

      Bull Tokyo Dent Coll.

      Volume: 55(1) Pages: 110-110

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Involvement of AQP6 in the mercury-sensitive osmotic lysis of rat parotid secretory granules.2013

    • Author(s)
      M. Matsuki-Fukushima, J. Fujita-Yoshigaki, M. Murakami, O. Katsunmata-Kato, M. Yokoyama, H. Sugiya
    • Journal Title

      J Membr Biol

      Volume: 246 Issue: 3 Pages: 209-214

    • DOI

      10.1007/s00232-012-9522-7

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] ラット耳下腺分泌顆粒に特異的なpHインジケーターの合成と応用2014

    • Author(s)
      福島美和子、加藤治、横山愛、美島健二、吉垣純子
    • Organizer
      第59回日本唾液腺学会
    • Place of Presentation
      東京、文京区
    • Year and Date
      2014-12-06
    • Related Report
      2014 Annual Research Report
  • [Presentation] ラット耳下腺分泌顆粒に特異的なpHインジケーターの合成と応用2013

    • Author(s)
      福島美和子, 加藤治, 横山愛, 吉垣純子
    • Organizer
      第57回歯科基礎医学会
    • Place of Presentation
      岡山コンベンションセンター、岡山市、岡山県
    • Related Report
      2013 Research-status Report
  • [Presentation] Involvement of anion permeable aquaporin-6 in osmotic lysis of parotid secretory granules2013

    • Author(s)
      Miwako Matsuki-Fukushima, Masataka Murakami, Junko Fujita-Yoshigaki, Osamu Katsumata-Kato, Megumi Yokoyama and Hiroshi Sugiya
    • Organizer
      67th Symposium of General Physiology
    • Place of Presentation
      Woods hole, MA, USA
    • Related Report
      2013 Research-status Report
  • [Presentation] Development of secretory granule-specific pH indicator in rat parotid acinar cells2013

    • Author(s)
      Miwako Matsuki-Fukushima, Osamu Katsumata-Kato, Megumi Yokoyama and Junko Fujita-Yoshigaki
    • Organizer
      The 90th Annual Meeting of the Physiological Society of Japan
    • Place of Presentation
      タワーホール船堀(東京)
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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