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Novel strategy of direct reprogramming into chondrocyte

Research Project

Project/Area Number 17K19749
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Oral Science and related fields
Research InstitutionOsaka University

Principal Investigator

Hata Kenji  大阪大学, 歯学研究科, 准教授 (80444496)

Project Period (FY) 2017-06-30 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords軟骨細胞 / ダイレクトリプログラミング
Outline of Final Research Achievements

Direct reprogramming is a promising strategy for cartilage regeneration. We have established the cloning strategy to identify directreprogramming factors of chondrocyte using reporter mice in which chondrocytes were fluorecently labelled with Venus gene. We have identified four transcription factors including Sox9. Forced expression of four transcription factors into dermal fibroblasts isolated from reporter mice induced Venus positive chondrogenic cells. Also, these sets of transcription factors dramatically increased Col2a1, Col11a2 and Aggrecan mRNA expression.These results suggest that our strategy of direct reprogrammming may contribute to the development of regenerative medicine of cartilage.

Academic Significance and Societal Importance of the Research Achievements

軟骨組織をはじめとする様々な臓器の再生においてiPS細胞を用いた再生医療が注目されている。しかしながら、iPS細胞を用いた場合、低い軟骨細胞分化誘導能など様々な問題点が指摘されている。これらの問題点を解決する手法として期待されているのが、特定の転写因子の組合せを遺伝子導入し、皮膚線維芽細胞からiPS細胞を経ずに目的の細胞へと直接分化誘導させるダイレクトリプログラミングである。本研究で発見した軟骨細胞のダイレクトリプログラミング因子の候補遺伝子に関する研究をさらに進展させることにより、効率の良い軟骨再生治療の確立を目指していきたい。

Report

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

    (6 results)

All 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (4 results) (of which Invited: 4 results)

  • [Journal Article] Interaction of LEF1 with TAZ is necessary for the osteoblastogenic activity of Wnt3a.2018

    • Author(s)
      Kida J, Hata K, Nakamura E, Yagi H, Takahata Y, Murakami T, Maeda Y, Nishimura R.
    • Journal Title

      Sci Rep

      Volume: 8(1) Pages: 10375-10375

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Transcriptional network controlling endochondral ossification2017

    • Author(s)
      Hata K, Takahata Y, Murakami T, Nishimura R
    • Journal Title

      J Bone Metab

      Volume: 24 Issue: 2 Pages: 75-82

    • DOI

      10.11005/jbm.2017.24.2.75

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 軟骨細胞分化における高次遺伝子発現制御機構の解明2018

    • Author(s)
      波多賢二
    • Organizer
      第60回 歯科基礎医学会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 転写制御と骨格系疾患の分子機構2018

    • Author(s)
      波多賢二
    • Organizer
      第60回 歯科基礎医学会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 軟骨細胞に関するトピックス2017

    • Author(s)
      波多賢二
    • Organizer
      日本骨代謝学会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 転写因子による内軟骨性骨化の制御2017

    • Author(s)
      波多 賢二,高畑 佳史,村上 智彦,西村 理行
    • Organizer
      歯科基礎医学会学術大会
    • Related Report
      2017 Research-status Report
    • Invited

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Published: 2017-07-21   Modified: 2020-03-30  

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