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Mechanism of V-ATPase-mediated positioning of lysosomes and microtubules

Research Project

Project/Area Number 16K07357
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Cell biology
Research InstitutionIwate Medical University

Principal Investigator

Goto-Matsumoto Naomi  岩手医科大学, 薬学部, 助教 (80403971)

Co-Investigator(Kenkyū-buntansha) 中西 真弓  岩手医科大学, 薬学部, 教授 (20270506)
Research Collaborator Wada Yoh  大阪大学, 産業科学研究所, 准教授 (50212329)
Wada Ge-Hong (Sun Ge-Hong)  同志社女子大学, 薬学部, 教授 (00314427)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsリソソーム / 破骨細胞 / V-ATPase / Rab / Rab7 / V-ATPase / 小胞輸送 / 細胞生物学
Outline of Final Research Achievements

Bone resorption by osteoclast requires lysosome trafficking to plasma membrane. We found that a3 isoform of proton-pumping V-ATPase is essential for the lysosome trafficking and osteoclast-characteristic localization of microtubules. Furthermore, we demonstrated that a3 specifically interacts with GDP-bound Rab7, small GTPase involved in lysosome trafficking, and Rab7 is not localized to lysosomes in a3-knockout osteoclast. These results suggest that a3 recruits Rab7 to lysosome via its interaction with GDP-bound Rab7. We revealed that acidification by V-ATPase is necessary for localization of GTP-bound Rab7 to lysosome. We also showed that V-ATPase induced during osteoclast differentiation is inactive when osteoclasts were cultured on plastic dish, suggesting the mechanism for activation of V-ATPase after adhesion to bone.

Academic Significance and Societal Importance of the Research Achievements

本研究は、分泌リソソームの移動メカニズムを分子レベルで解明した点に意義がある。分泌リソソームは骨吸収だけでなく、細胞傷害性T細胞や高転移性のがん細胞でも重要な役割を果たしており、骨代謝疾患の発症機構解明や治療法の開発に役立つだけでなく、免疫反応や転移の制御にもつながる成果である。
オルガネラ輸送がV-ATPaseによりコントロールされていることを示した点も重要である。V-ATPaseはアイソフォームの違いにより構造的な多様性があり、Rabは哺乳動物で60種類以上同定されている。各V-ATPaseと相互作用するRabを明らかにすることで、オルガネラ輸送の全容解明につながると期待される。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (9 results)

All 2019 2018 2016

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Proton-pumping F-ATPase plays an important role in Streptococcus mutans under acidic conditions2019

    • Author(s)
      Sekiya Mizuki、Izumisawa Shintaro、Iwamoto-Kihara Atsuko、Fan Yang、Shimoyama Yu、Sasaki Minoru、Nakanishi-Matsui Mayumi
    • Journal Title

      Archives of Biochemistry and Biophysics

      Volume: 666 Pages: 46-51

    • DOI

      10.1016/j.abb.2019.03.014

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Vacuolar-type ATPase: A Proton Pump to Lysosomal Trafficking2019

    • Author(s)
      Masamitsu Futai, Ge-Hong Sun-Wada, Yoh Wada, Naomi Matsumoto, Mayumi Nakanishi-Matsui
    • Journal Title

      Proceedings of the Japan Academy, Ser. B

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Essential Role of the a3 Isoform of V-ATPase in Secretory Lysosome Trafficking via Rab7 Recruitment2018

    • Author(s)
      Matsumoto N, Sekiya M, Tohyama K, Ishiyama-Matsuura E, Sun-Wada GH, Wada Y, Futai M, Nakanishi-Matsui M.
    • Journal Title

      Scientific Reports

      Volume: 8 Issue: 1 Pages: 6701-6701

    • DOI

      10.1038/s41598-018-24918-7

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 破骨細胞への分化に伴う液胞型ATPaseの発現誘導と活性2018

    • Author(s)
      後藤奈緒美、中西真弓
    • Journal Title

      岩手医学雑誌

      Volume: 70

    • NAID

      130007498500

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] V-ATPase a3アイソフォームのリソソーム輸送における機能2018

    • Author(s)
      松元奈緒美、關谷瑞樹、遠山稿二郎、石山(松浦)絵里、和田(孫)戈虹、和田洋、二井將光、中西(松井)真弓
    • Organizer
      第84回日本生化学会東北支部例会・シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] V-ATPase a3アイソフォームは破骨細胞の分泌リソソームの細胞内輸送に必須である2018

    • Author(s)
      松元奈緒美、関谷瑞樹、遠山稿二郎、石山(松浦)絵里、和田(孫)戈虹、和田洋、二井將光、中西(松井)真弓
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 破骨細胞における分泌リソソームの局在に対する V-ATPase 阻害剤(バフィロマイシン A1)の影響2018

    • Author(s)
      松元奈緒美、關谷瑞樹、遠山稿二郎、石山(松浦)絵里、孫(和田)戈虹、和田洋、二井將光、中西(松井)真弓
    • Organizer
      日本薬学会 第138年会
    • Related Report
      2017 Research-status Report
  • [Presentation] V-H+-ATPase-a3-subunit contributes to elaborate highly calcifying enamel during amelogenesis2016

    • Author(s)
      Harada H, Ida-Yonemochi H, Sahara Y, Ohshima H, Fujiwara N, Matsumoto N, Nakanishi-Matsui M, Otsu K
    • Organizer
      Enamel 9 symposium
    • Place of Presentation
      Harrogate
    • Year and Date
      2016-10-31
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 破骨細胞に特徴的なリソソームの局在におけるV-ATPase a3イソフォームの関与2016

    • Author(s)
      松元奈緒美、關谷瑞樹、遠山稿二郎、孫(和田)戈虹、和田洋、二井將光、中西(松井)真弓
    • Organizer
      第89回日本生化学会大会
    • Place of Presentation
      仙台
    • Year and Date
      2016-09-26
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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