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Stem Cell Conversion of iPS Cell-Derived Trophectoderm

Research Project

Project/Area Number 21K20987
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0906:Surgery related to the biological and sensory functions and related fields
Research InstitutionKyoto University

Principal Investigator

Io Shingo  京都大学, 医学研究科, 客員研究員 (50759769)

Project Period (FY) 2021-08-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords幹細胞 / iPS細胞 / 胎盤 / 栄養膜細胞 / 細胞培養 / 産婦人科 / 発生生物学 / 人体発生学
Outline of Research at the Start

ヒト胚盤胞は栄養外胚葉(将来胎盤を作る細胞)と内部細胞塊(胎児を作る細胞)から構成される。ES細胞、iPS細胞や組織幹細胞の登場により、胎児の様々な細胞へ分化誘導が可能となり、細胞の発生過程や多能性維持機構の解明が進み、ヒト発生生物学や再生医学は著しい発展を遂げた。しかしながら、多能性幹細胞から目的とする細胞に分化誘導することは手間暇のかかる作業である。多能性幹細胞由来栄養外胚葉を利用した研究の効率的推進のためには、栄養外胚葉の性質を長期間維持可能な細胞が必要となる。本研究では、容易に培養可能な栄養外胚葉幹細胞を樹立することを目的とする。

Outline of Final Research Achievements

The placenta is an indispensable organ for maternal and fetal health, responsible for hormone secretion, which is important for the maintenance of pregnancy, and for the exchange of nutrients and gases between the fetus and the mother. There are no reports of maintenance culture of human trophectoderm. The aim of this study was to establish trophectoderm stem cells in vitro.
We established a technique for differentiation of ES and iPS cells into trophoblast cells. In addition, we improved the cell culture method to make the cell model easy to handle for researchers at multiple institutions.
In order to establish trophectoderm stem cells, we adopted the strategy of monitoring CDX2 gene expression as an indicator of continued maintenance of trophectoderm characteristics. The monitoring strategy is revealing a combination of compounds to maintain the cells as trophectoderm stem cells.

Academic Significance and Societal Importance of the Research Achievements

ES細胞、iPS細胞等の多能性幹細胞や組織幹細胞の登場により、胎児の様々な細胞へ分化誘導が可能となり、細胞の発生過程や多能性維持機構の解明が進んでいる。このような背景と、胎盤学の専門性を活かし、栄養膜細胞の発生の出発点である栄養外胚葉の細胞培養と維持方法の開発に取り組んだ。ヒト栄養外胚葉幹細胞は、ヒト胎盤の初期発生の研究、疾患のモデル化、生殖医療研究の有用なツールとなり得る。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (9 results)

All 2022 2021

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Optimized protocol for naive human pluripotent stem cell-derived trophoblast induction2021

    • Author(s)
      Io Shingo、Iemura Yoshiki、Takashima Yasuhiro
    • Journal Title

      STAR Protocols

      Volume: 2 Issue: 4 Pages: 100921-100921

    • DOI

      10.1016/j.xpro.2021.100921

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Capturing human trophoblast development with naive pluripotent stem cells in vitro2021

    • Author(s)
      S Io M Kabata Y Lemura N Morone A Minagawa B Wong I Okamoto T Nakamura Y Kojima C Iwatani H Tsuchiya B Kawswandy E KondohS Kaneko K Woltjen M Saitou T Yamanoto M Mandai Y Takashima
    • Journal Title

      Cell Stem Cell

      Volume: 21 Issue: 6 Pages: 10-10

    • DOI

      10.1016/j.stem.2021.03.013

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] The challenge of establishing human trophectoderm stem cells using a CDX2 reporter line2022

    • Author(s)
      伊尾紳吾、近藤英治、万代昌紀
    • Organizer
      日本産科婦人科学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 新型ヒトiPS細胞を用いた絨毛細胞への分化誘導2021

    • Author(s)
      伊尾 紳吾、近藤 英治、髙島 康弘、万代 昌紀
    • Organizer
      第29回日本胎盤学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 新世代ヒトiPS細胞を用いて着床期トロホブラストを模倣する2021

    • Author(s)
      伊尾 紳吾、万代 昌紀
    • Organizer
      第66回日本生殖医学会学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 次世代ヒトiPS細胞を用いたトロホブラストの創出2021

    • Author(s)
      伊尾 紳吾、近藤 英治、山田 重人、万代 昌紀
    • Organizer
      第57回日本周産期・新生児医学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] Modeling of Trophectoderm to Cytotrophoblast Transition with Human Naive iPS Cells2021

    • Author(s)
      Shingo Io, Eiji Kondoh, Yasuhiro Takashima, Masaki Mandai
    • Organizer
      The 68th Annual Meeting of the Society for Reproductive Investigation
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Human trophoblast development is captured by naive induced pluripotent stem cells in vitro2021

    • Author(s)
      Shingo Io, Eiji Kondoh, Yasuhiro Takashima, Masaki Mandai
    • Organizer
      The 22nd World Congress of International Society for the Study of Hypertension in Pregnancy
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Modeling trophectoderm to cytotrophoblast transition with naive human pluripotent stem cells2021

    • Author(s)
      Shingo Io, Eiji Kondoh, Yasuhiro Takashima, Masaki Mandai
    • Organizer
      The International Federation of Placenta Associations 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2021-10-22   Modified: 2024-01-30  

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