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Study of nuclear-cytoplasmic incompatibility for the interspecies cloning.

Research Project

Project/Area Number 20K21361
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 42:Veterinary medical science, animal science, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Fujii Wataru  東京大学, 大学院農学生命科学研究科(農学部), 助教 (40708161)

Co-Investigator(Kenkyū-buntansha) 早川 晃司  岡山理科大学, 獣医学部, 講師 (50636800)
山内 啓太郎  東京大学, 大学院農学生命科学研究科(農学部), 准教授 (70272440)
Project Period (FY) 2020-07-30 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Keywords発生工学
Outline of Research at the Start

本研究では、卵母細胞を十分に入手できない動物について体細胞核移植で個体化を可能とする新たなスキームの確立に向けて、異種間の体細胞核移植における不和合性の分子機構を明らかにすることを目的とする。マウス-ラットの卵母細胞-体細胞核を利用した体細胞核移植胚を作製し、異種間で惹起される分子機構の解明を行うとともに、遺伝子操作による不和合成の解消に挑戦する。

Outline of Final Research Achievements

Interspecies nuclear transfer is expected to be usable for the production of embryos using somatic cells of animal species that cannot supply oocytes. This study examined the conditions for the production and analysis of somatic cell nuclear transfer systems between mice and rats, which are close in developmental engineering. The establishment system of iPS cells to be used as donor cells was examined, and we could develop a method to be used in a wide range of animal species, including not only mice and rats but also horses, zebras, and minks. Although we established a nuclear transfer using rat eggs as the recipient, no individuals were produced from rat-rat reconstructed embryos. On the other hand, we found an interspecies nuclear transfer embryo creation system using a mouse as the recipient.

Academic Significance and Societal Importance of the Research Achievements

本研究によって、マウスおよびラットを利用した異種間核移植胚の作製系の基礎条件の確立に成功し、遺伝学的な解析が可能となった。現在解析中の知見もあわせて、将来的に異種の体細胞核を利用した核移植胚の産生へ有用な知見を提供できると期待される。また、派生技術として効率的なiPS細胞の樹立系を構築し、これまでに報告のない動物種のiPS様細胞の樹立に成功した。同様に、簡便なトランスジェニック動物の作製方法も確立できた。これらの技術は、異種間核移植胚研究のみならず、発生工学の幅広い分野へ貢献すると期待される。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (6 results)

All 2022 2021 Other

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

  • [Int'l Joint Research] University of Hawaii(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] ハワイ大学(米国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Two acquired mouse Y chromosome-linked genes, <i>Prssl</i>y and <i>Teyorf1</i>, are dispensable for male fertility2022

    • Author(s)
      Holmlund Hayden、Yamauchi Yasuhiro、Durango Gerald、Fujii Wataru、Ward Monika A
    • Journal Title

      Biology of Reproduction

      Volume: - Issue: 3 Pages: 752-764

    • DOI

      10.1093/biolre/ioac084

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Genetic Engineering Via Mammalian Zygotes.2022

    • Author(s)
      Wataru Fujii
    • Organizer
      The Rising Stars in Reproductive Biology Webinar Series, Society for the Study of Reproduction
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Book] ゲノム編集技術を応用した製品開発とその実用化2021

    • Author(s)
      執筆者:96名、技術情報協会
    • Total Pages
      602
    • Publisher
      技術情報協会
    • ISBN
      9784861048272
    • Related Report
      2020 Research-status Report
  • [Remarks] 個人ホームページ

    • URL

      http://wtrfujii.com/

    • Related Report
      2021 Annual Research Report 2020 Research-status Report

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Published: 2020-08-03   Modified: 2025-03-27  

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