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Involvement of histone variants in the reprogramming of gene expression before and after fertilization

Research Project

Project/Area Number 18H03970
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 42:Veterinary medical science, animal science, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

AOKI Fugaku  東京大学, 大学院新領域創成科学研究科, 教授 (20175160)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥44,330,000 (Direct Cost: ¥34,100,000、Indirect Cost: ¥10,230,000)
Fiscal Year 2021: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Fiscal Year 2020: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2019: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
Fiscal Year 2018: ¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000)
Keywords遺伝子発現リプログラミング / ヒストン変異体 / 初期胚 / 卵 / クロマチン構造 / リプログラミング / 着床前初期胚 / 遺伝子発現のリプログラミング / ヒストンH3変異体 / 1細胞期胚 / 初期発生 / 遺伝子発現
Outline of Final Research Achievements

The purpose of this project is to elucidate the mechanism regulating the reprogram of gene expression after fertilization by analyzing the dynamics and the function of histone variants. First, I found that H3.3 but not H3.1/H3.2 is abundant in the nuclei of 1-cell stage embryos in mice. Regarding H2A variants, only H2A.X and TH2A is abundant. Knock-down/out and overexpression of these proteins caused the developmental delay and/or arrest and the changes in the expression of some stage specific genes and chromatin structure, suggesting that these histone variants are involved in the regulation of reprogramming.

Academic Significance and Societal Importance of the Research Achievements

現在、クローン動物やiPS細胞の作製成功により、リプログラミングについて高い関心が寄せられている。しかし、これまでのところ、受精前後におけるリプログラミングについては、その調節機構を調べた研究は極めて少ない。本研究により、リプログラミングの調節機構が明らかになることで、発生あるいは細胞分化を人為的に支配する途が新たに開けることが期待される。また、現在のところiPS細胞およびクローン動物作成の成功率が低いが、これはゲノムのリプログラミングが正常に進行していないことがその主な原因と考えられる。したがって、本研究の成果は効率的なiPS細胞およびクローン動物の作成法に新たな途を開くものと考えられる。

Report

(4 results)
  • 2021 Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (13 results)

All 2021 2020 2019 2018

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (7 results) (of which Invited: 2 results) Book (1 results)

  • [Journal Article] dmrt11E ortholog is a crucial factor for oogenesis of the domesticated silkworm, Bombyx mori. Insect Biochem2021

    • Author(s)
      1.Kasahara R, Yuzawa T, Fujii T, Aoki F, Suzuki MG.
    • Journal Title

      Insect Biochem Mol Biol

      Volume: 129 Pages: 103517-103517

    • DOI

      10.1016/j.ibmb.2020.103517

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression of Dux family genes in early preimplantation embryos2020

    • Author(s)
      2.Sugie K, Funaya S, Kawamura M, Nakamura T, Suzuki MG, Aoki F
    • Journal Title

      Sci Rep

      Volume: 10 Issue: 1 Pages: 19396-19396

    • DOI

      10.1038/s41598-020-76538-9

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Regulation of H3K9me3 during preimplantation development†2019

    • Author(s)
      Aoki Fugaku
    • Journal Title

      Biology of Reproduction

      Volume: 100 Issue: 1 Pages: 13-14

    • DOI

      10.1093/biolre/ioy201

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Minor zygotic gene activation is essential for mouse preimplantation development.2018

    • Author(s)
      Abe, K.-I., Funaya, S., Tsukioka, D., Kawamura, M., Suzuki, Y., Suzuki, M.G., Schultz, R.M. and Aoki, F.
    • Journal Title

      Proc. Natl. Acad. Sci. USA

      Volume: 115 Issue: 29

    • DOI

      10.1073/pnas.1804309115

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Linker histone H1FOO regulates the chromatin structure in mouse zygotes.2018

    • Author(s)
      Funaya, S., Ooga, M., Suzuki, M.G. and Aoki, F.
    • Journal Title

      FEBS Lett.

      Volume: 592 Issue: 14 Pages: 2414-2424

    • DOI

      10.1002/1873-3468.13175

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] マウス着床前初期発生における遺伝子発現プログラムへのヒストン変異体H3.1/3.2の関与2020

    • Author(s)
      船屋智史、青木不学
    • Organizer
      第113回 日本繁殖生物学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 全能期における遺伝子発現プログラムの調節機構の解明2019

    • Author(s)
      青木不学
    • Organizer
      キックオフシンポジウム「全能性プログラム:デコーディングからデザインへ」
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] H2A variants are involved in reprogramming of gene expression in preimplantation embryos and primordial germ cells.2019

    • Author(s)
      Dai Tsukioka, Fugaku Aoki
    • Organizer
      52nd Annual conference of Society for the Study of Reproduction.
    • Related Report
      2019 Annual Research Report
  • [Presentation] Involvement of linker histone variants in oogenesis2019

    • Author(s)
      Satoshi Funaya, Yuria Kawabata, Fugaku Aoki
    • Organizer
      52nd Annual conference of Society for the Study of Reproduction
    • Related Report
      2019 Annual Research Report
  • [Presentation] 着床前初期胚におけるDux familyの発現とその機能2019

    • Author(s)
      杉江拳太、青木不学
    • Organizer
      第112回日本繁殖生物学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] マウス1細胞期胚のクロマチン構造へのリンカーヒストン変異体への関与2019

    • Author(s)
      船屋智史
    • Organizer
      第112回日本繁殖生物学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 受精前後における遺伝子発現とヒストン変異体の変化について2018

    • Author(s)
      青木不学
    • Organizer
      第41回分子生物学会年会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Book] 繁殖生物学2020

    • Author(s)
      青木不学 他26名
    • Total Pages
      351
    • Publisher
      株式会社インターズー
    • ISBN
      9784866711102
    • Related Report
      2019 Annual Research Report

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Published: 2018-04-23   Modified: 2023-01-30  

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