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Identification and functional elucidation of a novel transport factor in osteoclasts

Research Project

Project/Area Number 19K10092
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57020:Oral pathobiological science-related
Research InstitutionNagasaki University

Principal Investigator

Fukuma Yutaka  長崎大学, 医歯薬学総合研究科(歯学系), 技術職員 (50253688)

Co-Investigator(Kenkyū-buntansha) 筑波 隆幸  長崎大学, 医歯薬学総合研究科(歯学系), 教授 (30264055)
坂井 詠子  長崎大学, 医歯薬学総合研究科(歯学系), 助教 (10176612)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
KeywordsRabタンパク質 / 破骨細胞 / 新規輸送因子 / 輸送因子
Outline of Research at the Start

私達は破骨細胞への成熟化が進むと発現が増大する遺伝子の中から新規タンパク質であるRab44を同定した。Rab44は膜輸送の制御を行っていると予測されるが、同遺伝子をノックダウンした破骨細胞は活性化・巨大化した。逆にRab44を過剰発現した破骨細胞では活性化が抑制され、エンドゾームの粒子数が増大した。本研究ではさらにRab44の分子機構を探るため、in vitro 解析として、Rab44のエフェクター分子の同定を行う。さらにin vivo での解析として、Rab44のマウスでの骨組織・骨代謝での機能を解析する。

Outline of Final Research Achievements

Osteoclasts release lysosomal protons and proteolytic enzymes from a unique membrane structure called "ruffled border" during bone resorption. We identified a novel protein, Rab44, from among the genes whose expression increases as maturation into osteoclasts with this unique membrane structure progresses. In this study, in order to further explore the molecular mechanisms of Rab44, we identified effector molecules that bind to Rab44 as an in vitro analysis. Furthermore, as an in vivo analysis, we prepared Rab44-knockout mice and analyzed changes in bone tissue and bone metabolism in wild and Rab44-knockout mice.

Academic Significance and Societal Importance of the Research Achievements

Rab44は細胞内の膜輸送を制御する分子スイッチであると考えられる。Rabはエフェクターと呼ばれる結合分子と協調的に働くことで小胞輸送やオルガネラの動態を制御する。この解明により、なぜ破骨細胞ではリソソームがRab44依存的に分泌されるのかの分子基盤が解明される。さらにRab44の破骨細胞の多核化のメカニズムを膜輸送や小胞輸送という切り口から明らかにできる可能性がある。また遺伝子異常により、破骨細胞機能が活性化されることから、歯周病やリュウマチなど骨代謝疾患の新しい病態の解明に繋がる可能性がある。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (18 results)

All 2022 2021 2020 2019

All Journal Article (14 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 14 results,  Open Access: 14 results) Presentation (4 results) (of which Invited: 1 results)

  • [Journal Article] Rab34 plays a critical role as a bidirectional regulator of osteoclastogenesis2022

    • Author(s)
      Feng Yunxia、Tran Manh Tien、Lu Yanyin、Htike Kaung、Okusha Yuka、Sogawa Chiharu、Eguchi Takanori、Kadowaki Tomoko、Sakai Eiko、Tsukuba Takayuki、Okamoto Kuniaki
    • Journal Title

      Cell Biochemistry and Function

      Volume: 40 Issue: 3 Pages: 263-277

    • DOI

      10.1002/cbf.3691

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rab44 isoforms similarly promote lysosomal exocytosis, but exhibit differential localization in mast cells.2021

    • Author(s)
      Kadowaki T, Yamaguchi Y, Ogawa K, Tokuhisa M, Okamoto K, Tsukuba T.
    • Journal Title

      FEBS Open Bio

      Volume: 11 Issue: 4 Pages: 1165-1185

    • DOI

      10.1002/2211-5463.13133

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Liquid-phase ASEM imaging of cellular and structural details in cartilage and bone formed during endochondral ossification: Keap1-deficient osteomalacia2021

    • Author(s)
      Sakai E, Sato M, Memtily N, Tsukuba T, Sato C.
    • Journal Title

      Sci Rep.

      Volume: 11 Issue: 1 Pages: 5722-5722

    • DOI

      10.1038/s41598-021-84202-z

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A novel role of HSP90 in regulating osteoclastogenesis by abrogating Rab11b-driven transport2021

    • Author(s)
      Tran Manh Tien、Okusha Yuka、Feng Yunxia、Sogawa Chiharu、Eguchi Takanori、Kadowaki Tomoko、Sakai Eiko、Tsukuba Takayuki、Okamoto Kuniaki
    • Journal Title

      Biochimica et Biophysica Acta (BBA) - Molecular Cell Research

      Volume: 1868 Issue: 10 Pages: 119096-119096

    • DOI

      10.1016/j.bbamcr.2021.119096

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Large Rab GTPases: Novel Membrane Trafficking Regulators with a Calcium Sensor and Functional Domains2021

    • Author(s)
      Tsukuba Takayuki、Yamaguchi Yu、Kadowaki Tomoko
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 14 Pages: 7691-7691

    • DOI

      10.3390/ijms22147691

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Role of Cytokines Produced via the NLRP3 Inflammasome in Mouse Macrophages Stimulated with Dental Calculus in Osteoclastogenesis2021

    • Author(s)
      Mae Megumi、Alam Mohammad Ibtehaz、Yamashita Yasunori、Ozaki Yukio、Higuchi Kanako、Ziauddin S. M.、Montenegro Raudales Jorge Luis、Sakai Eiko、Tsukuba Takayuki、Yoshimura Atsutoshi
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 22 Pages: 12434-12434

    • DOI

      10.3390/ijms222212434

    • NAID

      120007186852

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] (−)-Epigallocatechin-3-gallate inhibits RANKL-induced osteoclastogenesis via downregulation of NFATc1 and suppression of HO-1–HMGB1–RAGE pathway2020

    • Author(s)
      Nishioku T, Kubo T, Kamada T, Okamoto K, Tsukuba T, Uto T, Shoyama Y.
    • Journal Title

      Biomedical Research

      Volume: 41 Issue: 6 Pages: 269-277

    • DOI

      10.2220/biomedres.41.269

    • NAID

      130007948845

    • ISSN
      0388-6107, 1880-313X
    • Year and Date
      2020-12-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] . The Inhibitory Role of Rab11b in Osteoclastogenesis through Triggering Lysosome-Induced Degradation of c-Fms and RANK Surface Receptors.2020

    • Author(s)
      Tran MT, Okusha Y, Feng Y, Morimatsu M, Wei P, Sogawa C, Eguchi T, Kadowaki T, Sakai E, Okamura H, Naruse K, Tsukuba T, Okamoto K
    • Journal Title

      Int. J. Mol. Sci.

      Volume: 21 Issue: 24 Pages: 9352-9352

    • DOI

      10.3390/ijms21249352

    • NAID

      120006952291

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Role of the EF-hand and coiled-coil domains of human Rab44 in localisation and organelle formation.2020

    • Author(s)
      Ogawa K, Kadowaki T, Tokuhisa M, Yamaguchi Y, Umeda M, Tsukuba T.
    • Journal Title

      Sci. Rep.

      Volume: 10 Issue: 1 Pages: 19149-19149

    • DOI

      10.1038/s41598-020-75897-7

    • NAID

      120006988463

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rab11A Functions as a Negative Regulator of Osteoclastogenesis through Dictating Lysosome-Induced Proteolysis of c-fms and RANK Surface Receptors.2020

    • Author(s)
      Okusha Y, Tran MT, Itagaki M, Sogawa C, Eguchi T, Okui T, Kadowaki T, Sakai E, Tsukuba T, Okamoto K.
    • Journal Title

      Cells

      Volume: 9 Issue: 11 Pages: 2384-2384

    • DOI

      10.3390/cells9112384

    • NAID

      120006941059

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Expression and localisation of Rab44 in immune-related cells change during cell differentiation and stimulation.2020

    • Author(s)
      Tokuhisa M., Kadowaki T., Ogawa K., Yamaguchi Y., Kido MA., Gao W., Umeda M., Tsukuba T.
    • Journal Title

      Sci. Rep.

      Volume: 10 Issue: 1 Pages: 10728-10728

    • DOI

      10.1038/s41598-020-67638-7

    • NAID

      120006988132

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dimethyl fumarate prevents osteoclastogenesis by decreasing NFATc1 expression, inhibiting of erk and p38 MAPK phosphorylation, and suppressing of HMGB1 release2020

    • Author(s)
      Nishioku T, Kawamoto M, Okizono R, Sakai E, Okamoto K, Tsukuba T.
    • Journal Title

      Biochem Biophys Res Commun.

      Volume: 530 Issue: 2 Pages: 455-461

    • DOI

      10.1016/j.bbrc.2020.05.088

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The large GTPase Rab44 regulates granule exocytosis in mast cells and IgE-mediated anaphylaxis.2020

    • Author(s)
      Kadowaki T, Yamaguchi Y, Kido MA, Abe T, Ogawa K, Tokuhisa M, Gao W, Okamoto K, Kiyonari H, Tsukuba T.
    • Journal Title

      Cell Mol Immunol.

      Volume: 17 Issue: 12 Pages: 1287-1289

    • DOI

      10.1038/s41423-020-0413-z

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Calcium phosphate mineralization in bone tissues directly observed in aqueous liquid by atmospheric SEM (ASEM) without staining: microfluidics crystallization chamber and immuno-EM.2019

    • Author(s)
      Sato C, Yamazaki D, Sato M, Takeshima H, Memtily N, Hatano Y, Tsukuba T, Sakai E.
    • Journal Title

      Sci Rep.

      Volume: 9(1) Issue: 1 Pages: 7352-7352

    • DOI

      10.1038/s41598-019-43608-6

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] リソソームとアレルギー疾患制御2020

    • Author(s)
      門脇知子、山口 優、筑波隆幸
    • Organizer
      第62回歯科基礎医学会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 大気圧走査電子顕微ASEMによる組織・細胞の免疫電顕法とcryo-TEM観察2019

    • Author(s)
      佐藤主税,杉本真也,Memtily Nassirhadjy,山澤徳志子, 佐藤真理,坂井詠子
    • Organizer
      第75回日本顕微鏡学会
    • Related Report
      2019 Research-status Report
  • [Presentation] 大気圧電顕によるリン酸カルシウムと破骨細胞の水中観察と免疫電顕2019

    • Author(s)
      佐藤主税,籏野悠里,Memtily Nassirhadjy,佐藤真理,坂井詠子
    • Organizer
      第39回日本骨形態計測学会
    • Related Report
      2019 Research-status Report
  • [Presentation] 大気圧走査電子顕微ASEMによる骨組織再構築の水中免疫電顕法とcryo-TEM観察2019

    • Author(s)
      佐藤主税,杉本真也,籏野悠里, 佐藤真理,坂井詠子
    • Organizer
      第57回日本生物物理学会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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