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Development of alveolar bone/gingival organoids by using iPS cells and 3D cell culture system for the oral regenerative medicine

Research Project

Project/Area Number 23K24533
Project/Area Number (Other) 22H03275 (2022-2023)
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund (2024)
Single-year Grants (2022-2023)
Section一般
Review Section Basic Section 57040:Regenerative dentistry and dental engineering-related
Research InstitutionHiroshima University

Principal Investigator

Mikihito Kajiya  広島大学, 病院(歯), 教授 (00633041)

Co-Investigator(Kenkyū-buntansha) 後藤 健彦  広島大学, 先進理工系科学研究科(工), 准教授 (10274127)
太田 耕司  広島大学, 医系科学研究科(歯), 教授 (20335681)
池谷 真  京都大学, iPS細胞研究所, 准教授 (20442923)
加藤 功一  広島大学, 医系科学研究科(歯), 教授 (50283875)
Project Period (FY) 2024-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2024: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2023: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2022: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Keywords間葉系幹細胞集塊 / 神経堤細胞由来間葉系幹細胞 / 顎骨オルガノイド / 歯肉オルガノイド
Outline of Research at the Start

本研究は、口腔の起源となる神経堤細胞(NCC)をiPS細胞から誘導し、そこからさらに顎骨オルガノイド・歯肉オルガノイドを樹立する。また、これらオルガノイドを搭載可能な流体デバイスを独自開発することで、口腔環境を模倣する「口腔オルガノイド-on-a-chip」を開発する。
さらに、得られた「口腔オルガノイド-on-a-chip」に免疫細胞や口腔内細菌を還流させながら、口腔内の生理・病理状態を創出し、口腔についての分子生物学的レベルでの理解を深め、将来の創薬・予防・再生医療開発のための基盤構築を行う。

Outline of Final Research Achievements

In this study, we successfully developed jawbone and gingival organoids from three-dimensional cell aggregates (C-iNCC-MSCs) based on mesenchymal stem cells of neural crest origin derived from human iPS cells (iNCC-MSCs). These organoids were generated through scaffold-free aggregation. By using a Bio3D printer combined with dynamic shaking culture, we established large-scale constructs while regulating YAP/TAZ mechanotransduction pathways. Furthermore, by incorporating endothelial cells, we generated gingival-like organoids with capillary-like structures. Additionally, we established a multi-layered, flow-controlled culture system using semiconductor-based microfluidic chip technology, allowing co-culture of organoids with epithelial cells and oral bacteria. This achievement represents a foundational step toward realizing a functional “Oral Organoids-on-a-chip” platform for future applications in disease modeling and regenerative therapy.

Academic Significance and Societal Importance of the Research Achievements

本研究は、ヒトiPS細胞由来の神経堤系間葉系幹細胞を用いて、顎骨・歯肉オルガノイドを三次元的に再構築し、さらにマイクロ流路デバイス上での動的共培養系(Oral Organoids-on-a-chip)を確立した点で先駆的である。これらは新規歯周組織再生医療として臨床応用につながらう可能性があるとともに、口腔疾患再現in vitroモデルとして利用することで、口腔の病態メカニズム解明と創薬研究にも貢献できるといえる。したがって、顎口腔領域における未踏の再生基盤技術として学術的・社会的に大きな意義を持つ。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • Research Products

    (13 results)

All 2025 2024 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (7 results) (of which Int'l Joint Research: 5 results,  Invited: 6 results)

  • [Int'l Joint Research] Nova Southeastern University/Augusta University(米国)

    • Related Report
      2024 Annual Research Report
  • [Journal Article] Application of mesenchymal stem/stromal cells in periodontal regeneration: Opportunities and challenges2024

    • Author(s)
      Gao Pan、Kajiya Mikihito、Motoike Souta、Ikeya Makoto、Yang Jingmei
    • Journal Title

      Japanese Dental Science Review

      Volume: 60 Pages: 95-108

    • DOI

      10.1016/j.jdsr.2024.01.001

    • Related Report
      2024 Annual Research Report
  • [Journal Article] A Cartilaginous Construct with Bone Collar Exerts Bone-Regenerative Property Via Rapid Endochondral Ossification2023

    • Author(s)
      Morimoto Shin、Kajiya Mikihito、Yoshii Hiroki、Yoshino Mai、Horikoshi Susumu、Motoike Souta、Iwata Tomoyuki、Ouhara Kazuhisa、Ando Toshinori、Yoshimoto Tetsuya、Shintani Tomoaki、Mizuno Noriyoshi
    • Journal Title

      Stem Cell Reviews and Reports

      Volume: 19 Issue: 6 Pages: 1812-1827

    • DOI

      10.1007/s12015-023-10554-w

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Distinctive Biological Properties between Mesenchymal Stem Cell Spheroids and Clumps of Mesenchymal Stem Cells/Extracellular Matrix Complexes in 3D Culture Systems2023

    • Author(s)
      Yoshino Mai、Kajiya Mikihito、Yoshii Hiroki、Morimoto Shin、Horikoshi Susumu、Tari Misako、Iwata Tomoyuki、Ouhara Kazuhisa、Ando Toshinori、Yoshimoto Tetsuya、Shintani Tomoaki、Mizuno Noriyoshi
    • Journal Title

      Applied Sciences

      Volume: 13 Issue: 23 Pages: 12790-12790

    • DOI

      10.3390/app132312790

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clumps of mesenchymal stem cells/extracellular matrix complexes directly reconstruct the functional periodontal tissue in a rat periodontal defect model2022

    • Author(s)
      Sone Hisakatsu、Kajiya Mikihito、Takeda Katsuhiro、Sasaki Shinya、Horikoshi Susumu、Motoike Souta、Morimoto Shin、Yoshii Hiroki、Yoshino Mai、Iwata Tomoyuki、Ouhara Kazuhisa、Matsuda Shinji、Mizuno Noriyoshi
    • Journal Title

      Journal of Tissue Engineering and Regenerative Medicine

      Volume: 16 Issue: 10 Pages: 945-955

    • DOI

      10.1002/term.3343

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Induction of functional xeno-free MSCs from human iPSCs via a neural crest cell lineage2022

    • Author(s)
      Kamiya Daisuke、Takenaka-Ninagawa Nana、Motoike Souta、Kajiya Mikihito、Akaboshi Teppei、Zhao Chengzhu、Shibata Mitsuaki、Senda Sho、Toyooka Yayoi、Sakurai Hidetoshi、Kurihara Hidemi、Ikeya Makoto
    • Journal Title

      npj Regenerative Medicine

      Volume: 7 Issue: 1 Pages: 47-47

    • DOI

      10.1038/s41536-022-00241-8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 間葉系幹細胞から製造した3次元的細胞構造体と血管新生の調和による口腔組織再生療法2025

    • Author(s)
      加治屋幹人
    • Organizer
      第24回日本再生医療学会総会
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] Scaffold-free 3D Cell clumps culture technique opens new avenues for periodontal tissue regenerative therapy2024

    • Author(s)
      Mikihito Kajiya
    • Organizer
      AAP 110th Annual Meeting
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of Periodontal Tissue Regenerative Therapy Using Mesenchymal Stem Cells and Bio-3D Printer2024

    • Author(s)
      Mikihito Kajiya
    • Organizer
      Biofabrication 2024
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of Periodontal Tissue Regenerative Therapy Using Mesenchymal Stem Cells and Bio-3D Printer2024

    • Author(s)
      Mikihito Kajiya
    • Organizer
      72nd JADCR Annual Meeting
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] Development of Periodontal Tissue Regenerative Therapy Using Mesenchymal Stem Cells and Bio-3D Printer2024

    • Author(s)
      Mikihito Kajiya
    • Organizer
      AADOCR-JSPS Joint Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of Bio-3D Printed Grafting Tissue for Periodontal Regeneration2024

    • Author(s)
      Mikihito Kajiya, Hiroki Yoshii, Mai Yoshino, and Tetsuya Yoshimoto
    • Organizer
      102nd General Session and Exhibition of the IADR
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] "New Avenues for Regenerative Medicine Opened by 3D Cell Clumps Culture Techniques and Nanodevices"2022

    • Author(s)
      加治屋幹人
    • Organizer
      生体医歯工学共同研究拠点 第7回国際シンポジウム
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2022-04-19   Modified: 2026-01-16  

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