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Regeneration of bone and cartilage tissues by means of chemical direct reprogramming

Research Project

Project/Area Number 19K22690
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 56:Surgery related to the biological and sensory functions and related fields
Research InstitutionKyoto Prefectural University of Medicine

Principal Investigator

Osam Mazda  京都府立医科大学, 医学(系)研究科(研究院), 教授 (00271164)

Co-Investigator(Kenkyū-buntansha) 山本 健太  京都府立医科大学, 医学部附属病院, 専攻医 (00636160)
岸田 綱郎  京都府立医科大学, 医学(系)研究科(研究院), 准教授 (00370205)
新井 祐志  京都府立医科大学, 医学(系)研究科(研究院), 准教授 (50347449)
Project Period (FY) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2019: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Keywordsダイレクト・コンヴァージョン / ダイレクト・リプログラミング / 再生医療 / 骨芽細胞 / 軟骨細胞 / 再生医学
Outline of Research at the Start

我々は、ヒト線維芽細胞から骨芽細胞を直接誘導する技術(ダイレクト・リプログラミング)を確立し、さらに1種類の化合物を添加して培養するだけでヒト線維芽細胞から骨芽細胞を誘導することにも成功した。本研究ではヒト線維芽細胞に化合物を添加して培養し、軟骨細胞を誘導する技術を確立する。そのために、①線維芽細胞から軟骨細胞へのコンヴァージョンの効率を向上。②軟骨細胞の性状解析と、正常な軟骨細胞との類似性等の評価。③コンヴァージョンの分子メカニズム解析。④in vivoにおける細胞動態、軟骨再生等の機能、および造腫瘍性の評価を行う。本研究の成果は、骨軟骨疾患に対する再生医療に有用であろう。

Outline of Final Research Achievements

We previously reported direct conversion of fibroblasts into osteoblasts aiming at regenerative therapy for various bone diseases including osteoporotic bone fractures and bone defect after surgical resection of bone tumors. We also succeeded in directly converting fibroblasts into osteoblasts by culturing the cells with a small molecular compound. If fibroblasts can also be induced into chondrocyte-like cells at a high rate by a similar procedure, it may offer a novel therapeutic option for cartilage diseases such as osteoarthritis in the future. Then we have tried to improve the direct conversion of fibroblasts into osteoblasts. We have also developed and improved the technologies of converting fibroblasts into chondrocyte-like cells, characterized the induced cells and analyzed the mechanisms of conversion.

Academic Significance and Societal Importance of the Research Achievements

化合物を添加して体細胞をコンヴァートさせるケミカル・ダイレクト・コンヴァージョンでは、導入された遺伝子や染色体に挿入されたウイルスベクター配列によって細胞が移植後に腫瘍化するという危険性がないので、遺伝子導入によって誘導する方法に比してより安全性の高い移植用の細胞を提供できる可能性がある。骨芽細胞と軟骨細胞様細胞を誘導できることによって、骨と軟骨の両方にダメージがある変形性関節症や関節リウマチの患者に、自家骨芽細胞と自家軟骨細胞を大量に作って両方の移植を行うなどの新しい治療法にも応用しうる可能性が考えられ、骨軟骨疾患の再生医療の新しい選択肢として将来的に寄与することが期待できる。

Report

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

    (5 results)

All 2021 2020

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 4 results)

  • [Journal Article] Direct conversion of human fibroblasts into adipocytes using a novel small molecular compound: implications for regenerative therapy for adipose tissue defects2021

    • Author(s)
      Yoshihiro Sowa *, Tsunao Kishida, Fiona Louis, Seiji Sawai, Seki Makoto, Kenji Takahashi, Toshiaki Numajiri, Osam Mazda
    • Journal Title

      Cells

      Volume: -

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Raman Probes for In Situ Molecular Analyses of Peripheral Nerve2021

    • Author(s)
      G. Pezzotti,* T. Adachi, N. Miyamoto, T. Yamamoto, F. Boschetto, E. Marin, W. Zhu, N. Kanamura, E. Ohgitani, M. Pizzi, Y. Sowa, and O. Mazda
    • Journal Title

      ACS Chem. Neurosci.

      Volume: -

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Surface functionalization of PEEK with silicon nitride2021

    • Author(s)
      Boschetto, Francesco; Marin, Elia; Ohgitani, Eriko; Adachi, Tetsuya; Zanocco, Matteo; Horiguchi, Satoshi; Zhu, Wenliang; McEntire, Bryan; Mazda, Osam; Bal, B. Sonny; Pezzotti, Giuseppe
    • Journal Title

      Biomedical Materials

      Volume: -

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pristimerin inhibits the proliferation of HT1080 fibrosarcoma cells by inducing apoptosis2020

    • Author(s)
      Hayashi Daichi、Shirai Toshiharu、Terauchi Ryu、Tsuchida Shinji、Mizoshiri Naoki、Mori Yuki、Arai Yuji、Mazda Osam、Kubo Toshikazu
    • Journal Title

      Oncology Letters

      Volume: 19 Pages: 2963-2970

    • DOI

      10.3892/ol.2020.11405

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fabrication of contractile skeletal muscle tissues using directly converted myoblasts from human fibroblasts2020

    • Author(s)
      Shimizu Kazunori、Ohsumi Saki、Kishida Tsunao、Mazda Osam、Honda Hiroyuki
    • Journal Title

      Journal of Bioscience and Bioengineering

      Volume: 129 Issue: 5 Pages: 632-637

    • DOI

      10.1016/j.jbiosc.2019.11.013

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed

URL: 

Published: 2019-07-04   Modified: 2022-01-27  

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