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Mechanism and its regulation of lipid rafts in the osteoclastic resorption of bone

Research Project

Project/Area Number 24593079
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Orthodontic/Pediatric dentistry
Research InstitutionThe University of Tokyo

Principal Investigator

OKAYASU Mari  東京大学, 医学部附属病院, 特任臨床医 (10610941)

Co-Investigator(Kenkyū-buntansha) HAKETA Yoshiyuki  明海大学, 歯学部, 教授 (90164772)
SUSAMI Takafumi  東京大学, 医学部, 准教授 (80179184)
NAGAHAMA Kohei  東京大学, 医学部, 助教 (80587775)
YANO Fumiko  東京大学, 医学(系)研究科(研究院), 助教 (80529040)
Project Period (FY) 2012-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords破骨細胞 / lipid raft / 骨代謝 / LDL / コレステロール / LDL受容体
Outline of Final Research Achievements

Disruption of the balance between osteoblastic bone formation and osteoclastic bone resorption causes various bone disorders.This study indicate that osteoclast differentiation is highly dependent of exogenous cholesterol and that the decrease in intracellular cholesterol level due to LDLR deficiency results in the reduction of cell-cell-fusion of preosteoclasts due to the impaired trafficking of osteoclast fusion proteins such as DC-STAMP and Atp6v0d2 into the plasma membrane. The study presented here demonstrates the close relationship between bone and lipid metabolisms and a novel mechanism for osteoclast differentiation.

Report

(5 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (2 results)

All 2013 2012

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (1 results) (of which Invited: 1 results)

  • [Journal Article] Low-density lipoprotein receptor deficiency causes impaired osteoclastogenesis and increased bone mass in mice due to a defect in osteoclasticcell-cell fusion2012

    • Author(s)
      Okayasu M, Nakayachi M, Hayashida C, Ito J, Kaneda T, Masuhara M, Suda N, Sato T, Hakeda Y
    • Journal Title

      J Biol Chem

      Volume: (In press) Issue: 23 Pages: 19229-19241

    • DOI

      10.1074/jbc.m111.323600

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Low density lipoprotein receptorの破骨細胞形成に果たす役割の解明2013

    • Author(s)
      岡安麻里
    • Organizer
      第16回骨代謝研究会
    • Place of Presentation
      慶應義塾大学, 東京
    • Related Report
      2013 Research-status Report
    • Invited

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

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