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Nano-level multimodal analysis of matrix vesicle-mediated biomineralization

Research Project

Project/Area Number 20K20476
Project/Area Number (Other) 19H05568 (2019)
Research Category

Grant-in-Aid for Challenging Research (Pioneering)

Allocation TypeMulti-year Fund (2020)
Single-year Grants (2019)
Review Section Medium-sized Section 57:Oral science and related fields
Research InstitutionOsaka University

Principal Investigator

Murakami Shinya  大阪大学, 歯学研究科, 教授 (70239490)

Co-Investigator(Kenkyū-buntansha) 岩山 智明  大阪大学, 歯学研究科, 助教 (80757865)
小椋 俊彦  国立研究開発法人産業技術総合研究所, 生命工学領域, 上級主任研究員 (70371028)
柏木 陽一郎  大阪大学, 歯学研究科, 助教 (20598396)
山下 元三  大阪大学, 歯学部附属病院, 講師 (90524984)
Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥26,000,000 (Direct Cost: ¥20,000,000、Indirect Cost: ¥6,000,000)
Fiscal Year 2021: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2020: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2019: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
Keywords硬組織 / 基質小胞 / 誘電率顕微鏡 / 石灰化 / 骨芽細胞 / 石灰化過程 / リン酸カルシウム / 歯根膜細胞 / 細胞外基質
Outline of Research at the Start

生体硬組織の形成と維持には、硬組織形成細胞中で基質小胞が形成され、細胞外へと分泌されることが必須である。本研究では、生細胞をナノレベル観察することが可能な走査電子誘電率顕微鏡をさらに改良・高度化し、骨関連疾患の患者由来細胞や、ゲノム編集技術を用いて改変した培養細胞を観察し、遺伝子レベルから細胞内外の構造、組成レベルに至る多相的で包括的な解析を推進し、基質小胞や細胞外基質の生成・放出に基づく骨基質の生成・維持機構を明らかにすることを目指す。

Outline of Final Research Achievements

In the initial process of hard tissue formation, such as bone and tooth, it is essential for hard tissue-forming cells to form and secret matrix vesicles. This study has established a multimodal analysis that combines elemental analysis and Raman microscopy by improving a scanning electron-assisted dielectric microscopy system that enables nano-level observation of living cells in solution. We have also analyzed gene knockout and knock-in cells to advance our understanding of matrix vesicle-mediated biomineralization.

Academic Significance and Societal Importance of the Research Achievements

本研究成果により、生体硬組織の形成・維持についての基本的なメカニズムの理解が進展したことにより、骨や歯を正常に保つ治療法や予防法の開発につながり、高齢者の健康とQuality of Life増進に寄与するものと期待できる。また、細胞内の微粒子の働きを生細胞のまま多相的にナノレベル観察する手法が確立され、同手法は微粒子を介した様々な生命現象の解明に広く応用可能と期待される。

Report

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

    (5 results)

All 2021 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (3 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] Matrix vesicle-mediated mineralization and periodontal regeneration2021

    • Author(s)
      Iwayama Tomoaki、Murakami Shinya
    • Journal Title

      Nihon Shishubyo Gakkai Kaishi (Journal of the Japanese Society of Periodontology)

      Volume: 63 Issue: 2 Pages: 31-36

    • DOI

      10.2329/perio.63.31

    • NAID

      130008063272

    • ISSN
      0385-0110, 1880-408X
    • Year and Date
      2021-06-30
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nanoscale observation of PM2.5 incorporated into mammalian cells using scanning electron-assisted dielectric microscope2021

    • Author(s)
      Okada Tomoko、Iwayama Tomoaki、Murakami Shinya、Torimura Masaki、Ogura Toshihiko
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 228-228

    • DOI

      10.1038/s41598-020-80546-0

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 定量解析を目的とした歯根膜からの細胞単離法の開発2021

    • Author(s)
      岩下瑞穂, 岩山智明, 冨田貴和子, 松本修治, パーンポンサティアン, 阪下裕美, 竹立匡秀, 山田聡, 村上伸也
    • Organizer
      第64回春季日本歯周病学会学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Role of osteoblastic lysosome in mineralization2020

    • Author(s)
      T. Iwayama
    • Organizer
      Japan Bone Academy
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Analyzing matrix vesicles in mineral-forming cells2019

    • Author(s)
      Iwayama T, Murakami S
    • Organizer
      OKINAWA COLLOIDS 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2019-07-04   Modified: 2024-03-26  

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