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Reconstitution of artificial blastocysts by stem cells

Research Project

Project/Area Number 20K20375
Project/Area Number (Other) 18H05366 (2018-2019)
Research Category

Grant-in-Aid for Challenging Research (Pioneering)

Allocation TypeMulti-year Fund (2020)
Single-year Grants (2018-2019)
Review Section Medium-sized Section 42:Veterinary medical science, animal science, and related fields
Research InstitutionChiba University (2018, 2020-2022)
Institute of Physical and Chemical Research (2019)

Principal Investigator

Yasuhide Ohinata  千葉大学, 大学院医学研究院, 講師 (70415107)

Project Period (FY) 2018-06-29 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥25,740,000 (Direct Cost: ¥19,800,000、Indirect Cost: ¥5,940,000)
Fiscal Year 2022: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2018: ¥15,340,000 (Direct Cost: ¥11,800,000、Indirect Cost: ¥3,540,000)
Keywords原始内胚葉 / 胚盤胞 / 胚オルガノイド / 原始内胚葉幹細胞 / 人工胚 / 初期発生 / 多能性幹細胞 / 栄養膜幹細胞 / 幹細胞 / 人工胚盤胞 / 胚性幹細胞
Outline of Research at the Start

哺乳動物の初期胚である胚盤胞は、栄養膜、着床前エピブラスト、原始内胚葉の3種類の数10個の細胞で構成される組織であるが、この様な単純な構造が何故、生命の起源として機能するのかは未知の領域である。これまでに胚盤胞の着床前エピブラストからは胚性幹細胞(ES細胞)が、栄養膜からは栄養膜幹細胞(TS細胞)が樹立されており、これら幹細胞は、胚盤胞に注入することによって、それぞれ主に胚や胎盤を形成することができる。本研究においては原始内胚葉幹細胞(PrES細胞)を樹立し、ES細胞、TS細胞と精密に組み合わせて用いることで人工胚盤胞を作製する。

Outline of Final Research Achievements

The blastocyst is composed of three cell lineages: preimplantation epiblast, trophoblast, and primitive endoderm. ES cells have been established from the preimplantation epiblast and TS cells from the trophoblast, but stem cells from the remaining primitive endoderm have not yet been established. We report the successful establishment of primitive endoderm stem cells in serum-free medium supplemented with FGF4, CHIR99021, and PDGF-AA. After all the cell lineage compornents necessary for the production of artificial blastocysts were prepared, we next produced early embryo organoids with ES cells, TS cells, and PrES cells, and transferred them into the uteri of pseudopregnant mice. These artificial embryos implanted efficiently and derived embryo-like structures surrounded by visceral yolk sac and parietal yolk sac-like structures.

Academic Significance and Societal Importance of the Research Achievements

胚盤胞を構成する3つの細胞系譜の内、最後に残された原始内胚葉系列からPrES細胞が樹立されたことにより、概念的にはES細胞、TS細胞、PrES細胞を組み合わせて用いることで、胚盤胞を再構成できる可能性が示唆された。幹細胞のみで胚を作製する研究は、近年、幹細胞研究分野の中でも最も競争の激しいテーマとなったが、PrES細胞の樹立により、分野の発展はさらに加速すると予想される。
生命発生現象を幹細胞間相互作用として捉え、理論を解明する技術的基盤が確立されたことにより、生命とは何かという人類の根源的問いを解き明かす糸口を作ることができた。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (16 results)

All 2022 2021 2019

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (12 results) (of which Int'l Joint Research: 4 results,  Invited: 10 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Establishment of mouse stem cells that can recapitulate the developmental potential of primitive endoderm2022

    • Author(s)
      Ohinata Yasuhide、Endo Takaho A.、Sugishita Hiroki、Watanabe Takashi、Iizuka Yusuke、Kawamoto Yurie、Saraya Atsunori、Kumon Mami、Koseki Yoko、Kondo Takashi、Ohara Osamu、Koseki Haruhiko
    • Journal Title

      Science

      Volume: 375 Issue: 6580 Pages: 574-578

    • DOI

      10.1126/science.aay3325

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Variant PCGF1-PRC1 links PRC2 recruitment with differentiation-associated transcriptional inactivation at target genes2021

    • Author(s)
      Sugishita Hiroki、Kondo Takashi、Ito Shinsuke、Nakayama Manabu、Yakushiji-Kaminatsui Nayuta、Kawakami Eiryo、Koseki Yoko、Ohinata Yasuhide、Sharif Jafar、Harachi Mio、Blackledge Neil P.、Klose Robert J.、Koseki Haruhiko
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 5341-5341

    • DOI

      10.1038/s41467-021-24894-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Establishment of mouse stem cells that can recapitulate the developmental potential of primitive endoderm2022

    • Author(s)
      Yasuhide Ohinata, Haruhiko Koseki
    • Organizer
      RIKEN BDR-CuSTOM joint organoid symposium
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Establishment of mouse stem cells that can recapitulate the developmental potential of primitive endoderm2022

    • Author(s)
      Yasuhide Ohinata, Haruhiko Koseki
    • Organizer
      Japan Developmental Biology Meeting, Symposium 1
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] マウスにおける原始内胚葉幹細胞の樹立及び試験管内胚様構造の作製2022

    • Author(s)
      大日向康秀、古関明彦
    • Organizer
      第21回日本再生医療学会総会シンポジウム12(web開催)
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] マウスにおける原始内胚葉幹細胞の樹立2022

    • Author(s)
      大日向康秀、古関明彦
    • Organizer
      第66回日本生殖医学会総会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Establishment of primitive endoderm stem cells in mice2022

    • Author(s)
      Yasuhide Ohinata, Haruhiko Koseki
    • Organizer
      International Joint Usage/Research Center-Young Researchers Symposium, The Institute of Medical Science, The University of Tokyo
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Establishment of primitive endoderm stem cells in mice.2022

    • Author(s)
      Yasuhide Ohinata
    • Organizer
      IMSUT, International Joint Usage/Research Center-Young Researchers Symposium
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] マウスにおける原始内胚葉幹細胞の樹立及び試験管内胚様構造の作製2022

    • Author(s)
      大日向康秀
    • Organizer
      第21回日本再生医療学会総会シンポジウム12
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] マウスにおける原始内胚葉幹細胞の樹立2021

    • Author(s)
      大日向康秀、古関明彦
    • Organizer
      第10回日本マーモセット研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] マウスにおける原始内胚葉幹細胞の樹立2021

    • Author(s)
      大日向康秀、古関明彦
    • Organizer
      第66回日本生殖医学会総会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] マウスにおける原始内胚葉幹細胞の樹立2021

    • Author(s)
      大日向康秀
    • Organizer
      第10回日本マーモセット研究会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 幹細胞による人工胚盤胞の作製2019

    • Author(s)
      大日向康秀
    • Organizer
      新学術領域研究「全能性プログラム:デコーディングからデザインへ」キックオフシンポジウム
    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
  • [Presentation] 原始内胚葉幹細胞の樹立と幹細胞による人工胚盤胞作製の試み2019

    • Author(s)
      大日向康秀
    • Organizer
      第42回分子生物学会
    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
  • [Patent(Industrial Property Rights)] 原始内胚葉幹細胞誘導剤2019

    • Inventor(s)
      大日向康秀、古関明彦
    • Industrial Property Rights Holder
      理化学研究所
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-118733
    • Filing Date
      2019
    • Related Report
      2019 Annual Research Report
  • [Patent(Industrial Property Rights)] 原始内胚葉幹細胞誘導剤2019

    • Inventor(s)
      大日向康秀 古関明彦
    • Industrial Property Rights Holder
      理化学研究所
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-118733
    • Filing Date
      2019
    • Related Report
      2018 Annual Research Report

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Published: 2018-07-20   Modified: 2024-03-26  

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