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Generation of functional salivary glands using conditional blastocyst complementation and large animals

Research Project

Project/Area Number 21KK0290
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research (A))

Allocation TypeMulti-year Fund
Review Section Basic Section 57040:Regenerative dentistry and dental engineering-related
Research InstitutionShowa University

Principal Investigator

Tanaka Junichi  昭和大学, 歯学部, 准教授 (40710166)

Project Period (FY) 2022 – 2023
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Keywords唾液腺 / 胚盤胞補完法 / 多能性幹細胞 / iPS細胞 / 胚盤胞補完 / 臓器サイズ / 大動物
Outline of Research at the Start

唾液腺再生医療の究極の目標は、患者由来細胞から唾液腺を創生し移植することである。しかし、真に機能的で形態が複雑な唾液腺を作出している例はいまだない。申請者はマウスES細胞由来の唾液腺オルガノイドの誘導法、および基課題としてヒトiPS細胞由来唾液腺オルガノイド誘導法を開発した。しかし移植後の再生唾液腺はサイズが小さく、機能は不十分であり、臓器サイズと機能を確保できる別の手法の開発が望まれた。そこで本研究では、胚盤胞補完法を用いて機能的な唾液腺臓器の創生に取り組む。

Outline of Final Research Achievements

Ablation of Fgfr2 within the Foxa2 lineage in mice leads to salivary gland agenesis. We reversed this phenotype by injecting donor pluripotent stem cells into the mouse blastocysts, resulting in mice that survived to adulthood with salivary glands of normal size, comparable to those of their littermate controls. These findings demonstrate that CBC-based salivary gland regeneration serves as a foundational experimental approach for future advanced cell-based therapies.

Academic Significance and Societal Importance of the Research Achievements

口腔乾燥症(ドライマウス)の潜在的患者数は800万人ともいわれており、齲蝕、口腔感染症および摂食嚥下障害などの罹患率の上昇がみられる。現在根治療法が存在しないため唾液腺再生医療の開発が切望されている。
本研究では、胚盤胞補完法を用いてES細胞およびiPS細胞からマウス体内で野生型と同等のサイズおよび組織構造を伴う唾液腺の作出に成功した。これらの成果は、将来的な大動物を用いた胚盤胞補完法によりヒトサイズの唾液腺を作出するための基盤技術となり得る。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (7 results)

All 2024 2023 2022

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

  • [Int'l Joint Research] Columbia University Irving Medical Center(米国)2022

    • Year and Date
      2022-08-01
    • Related Report
      2023 Annual Research Report
  • [Journal Article] Single-cell analysis reveals the transcriptional alterations in the submandibular glands of aged mice2024

    • Author(s)
      Ohnuma Shintaro、Tanaka Junichi、Yukimori Akane、Ishida Shoko、Yasuhara Rika、Mishima Kenji
    • Journal Title

      Journal of Oral Biosciences

      Volume: 66 Issue: 1 Pages: 82-89

    • DOI

      10.1016/j.job.2023.12.002

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Conditional blastocyst complementation of a defective Foxa2 lineage efficiently promotes the generation of the whole lung2023

    • Author(s)
      Miura Akihiro、Sarmah Hemanta、Tanaka Junichi、Hwang Youngmin、Sawada Anri、Shimamura Yuko、Otoshi Takehiro、Kondo Yuri、Fang Yinshan、Shimizu Dai、Ninish Zurab、Suer Jake Le、Dubois Nicole C、Davis Jennifer、Toyooka Shinichi、Wu Jun、Que Jianwen、Hawkins Finn J、Lin Chyuan-Sheng、Mori Munemasa
    • Journal Title

      eLife

      Volume: 12

    • DOI

      10.7554/elife.86105

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Transcriptome profiles associated with human periodontal ligament differentiation.2023

    • Author(s)
      Yuji Takahashi, Rika Yasuhara, Junichi Tanaka Haruhisa Nakano, Koutaro Maki, Kenji Mishima.
    • Journal Title

      J Oral Biosci.

      Volume: 65(1) Issue: 1 Pages: 40-46

    • DOI

      10.1016/j.job.2023.01.005

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Towards human organ generation using interspecies blastocyst complementation: Challenges and perspectives for therapy2023

    • Author(s)
      Sarmah Hemanta、Sawada Anri、Hwang Youngmin、Miura Akihiro、Shimamura Yuko、Tanaka Junichi、Yamada Kazuhiko、Mori Munemasa
    • Journal Title

      Frontiers in Cell and Developmental Biology

      Volume: 11

    • DOI

      10.3389/fcell.2023.1070560

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A developmental program that regulates mammalian organ size offsets evolutionary distance2022

    • Author(s)
      Shimamura Yuko、Tanaka Junichi、Kakiuchi Miwako、Sarmah Hemanta、Miura Akihiro、Hwang Youngmin、Sawada Anri、Ninish Zurab、Yamada Kazuhiko、Cai James J.、Mori Munemasa
    • Journal Title

      bioRxiv

      Volume: -

    • DOI

      10.1101/2022.10.19.512107

    • Related Report
      2022 Research-status Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Conditional blastocyst complementation of a defective Foxa2 lineage efficiently promotes generation of the whole lung2022

    • Author(s)
      Miura Akihiro、Sarmah Hemanta、Tanaka Junichi、Hwang Youngmin、Sawada Anri、Shimamura Yuko、Fang Yinshan、Shimizu Dai、Ninish Zurab、Suer Jake Le、Dubois Nicole C.、Davis Jennifer、Toyooka Shinichi、Wu Jun、Que Jianwen、Hawkins Finn J.、Lin Chyuan-Sheng、Mori Munemasa
    • Journal Title

      bioRxiv

      Volume: -

    • DOI

      10.1101/2022.10.31.514628

    • Related Report
      2022 Research-status Report
    • Open Access / Int'l Joint Research

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Published: 2022-02-08   Modified: 2025-01-30  

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