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Elucidation of new bone mineralization mechanism using Podoplanin cKO mouse

Research Project

Project/Area Number 19K21419
Project/Area Number (Other) 18H06335 (2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2018)
Review Section 0907:Oral science and related fields
Research InstitutionFukuoka Dental College

Principal Investigator

Takara Kenyo  福岡歯科大学, 口腔歯学部, 助教 (30824164)

Project Period (FY) 2018-08-24 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsポドプラニン / CLEC-2 / 骨 / podoplanin / cKO / 石灰化 / 骨芽細胞 / Podoplanin / 骨細胞 / cKOマウス / cKO / bone / mineralization
Outline of Research at the Start

血小板膜蛋白CLEC-2のリガンドであるpodoplaninの骨細胞における発現が知られているが、その機能は不明である。申請者はpodoplanin遺伝子cKOマウスWnt1-Cre;PdpnΔを開発し長い間報告のなかったpodoplaninの成体マウスcKOを初めて成功させた。現在、申請者は、podoplaninが石灰化因子であり、CLEC-2が石灰化阻止因子である可能性を見出している。本研究では、骨細胞Pdpn cKOマウスCol1a1-Cre;PdpnΔを応用して、培養細胞とマウス成体の両者から骨細胞のpodoplanin-CLEC2石灰化制御機構を明らかにする。

Outline of Final Research Achievements

We established the podplanin conditional knockout mouse Col1a11-Cre; PdpnΔ for the first time in the world. Calcification of Col1a11-Cre; PdpnΔ osteoblasts was suppressed by CLEC-2 in Pdpnfl mouse-derived osteoblasts, while Col1a11-Cre; PdpnΔ osteoblasts were not suppressed by CLEC-2. Calcium production and alkaline phosphatase activity of Pdpnfl-derived osteoblasts were suppressed by CLEC-2, but calcification and alkaline phosphatase activities of Col1a11-Cre; PdpnΔ-derived osteoblasts were not suppressed. We found that podoplanin was not concerned with hard tissue development although podoplanin was considered to be a functional molecule that regulates bone formation by CLEC-2.

Academic Significance and Societal Importance of the Research Achievements

ポドプラニンを骨において石灰化を制御する可能性のある新しい分子として位置づける事のできる成果を見出した可能性がある。これからの骨の研究に新しいツールを確立したと考える。ポドプラニンは血小板のCLEC-2と結合すると細胞の突起形成や骨格形成が弱まる事が知られており、本研究から、血小板が骨細胞に作用すると骨形成を抑制する可能性が考えられた。新しい骨の研究の道筋を作ったかもしれない。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • Research Products

    (8 results)

All 2020 2019

All Presentation (8 results) (of which Int'l Joint Research: 3 results)

  • [Presentation] CLEC-2を介した頭蓋冠骨芽細胞の石灰化抑制2020

    • Author(s)
      高良 憲洋、梶原 弘一郎、藤田 隆寛、坂上 竜資、沢 禎彦、小島 寛
    • Organizer
      第125回日本解剖学会総会・全国学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] CLEC-2による頭蓋冠骨芽細胞の石灰化抑制2019

    • Author(s)
      高良 憲洋、梶原 弘一郎、藤田 隆寛、坂上 竜資、沢 禎彦 、小島 寛
    • Organizer
      第61回歯科基礎医学会学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] CLEC-2 suppresses calcification in calvarial osteoblasts2019

    • Author(s)
      Kenyo Takara,Koichiro Kajiwara,Takahiro Fujita,Takenori Kanai,Sachio Tamaoki,Ryuji Sakagami,Yoshihiko Sawa,Hiroshi Kojima
    • Organizer
      4th Meeting of the International Association for Dental Research Asia Pacific Region 2019, Brisbane
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ポドプラニン欠損マウスにおけるフェノタイプの検討2019

    • Author(s)
      髙良 憲洋、梶原 弘一郎、藤田 隆寛、坂上 竜資、小島 寛、沢 禎彦
    • Organizer
      第124回日本解剖学会総会・全国学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Porphyromonas. gingivalis LPSが誘導する糖尿病性腎症の発症とTLR4阻害剤の効果について2019

    • Author(s)
      梶原弘一郎、高良憲洋、藤田隆寛、坂上竜資、小島寛、沢禎彦
    • Organizer
      第61回歯科基礎医学会学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Effect of TLR4 inhibitors on porphyromonas gingivalis LPS-induced diabetic nephropathy2019

    • Author(s)
      Koichiro Kajiwara, Kenyo Takara, Takahiro Fujita, Takenori Kanai, Ryuji Sakagami, Hiroshi Kojima, Yoshihiko Sawa, Sachio Tamaoki
    • Organizer
      4th Meeting of the International Association for Dental Research Asia Pacific Region 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of scar suppression method applying TGF-β function of microfibril protein2019

    • Author(s)
      Takahiro Fujita , Koichiro Kajiwara , Kenyo Takara , Ryuji Sakagami , Hiroshi Kojima , Yoshihiko Sawa, Sachio Tamaoki
    • Organizer
      4th Meeting of the International Association for Dental Research Asia Pacific Region 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ポドプラニン欠損マウスにおけるフェノタイプの検討2019

    • Author(s)
      高良憲洋、梶原 弘一郎、藤田 隆寛、坂上 竜資、小島 寛、沢 禎彦
    • Organizer
      第124回日本解剖学会総会・全国学術集会
    • Related Report
      2018 Annual Research Report

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Published: 2018-08-27   Modified: 2024-03-26  

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