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Role of genomic imprinting in the establishment of ESCs

Research Project

Project/Area Number 16H06223
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field General medical chemistry
Research InstitutionOsaka University

Principal Investigator

Yamaguchi Shinpei  大阪大学, 医学系研究科, 助教 (80740795)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥25,090,000 (Direct Cost: ¥19,300,000、Indirect Cost: ¥5,790,000)
Fiscal Year 2018: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Fiscal Year 2017: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Fiscal Year 2016: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
KeywordsES細胞 / 未分化性 / DNAメチル化 / インプリンティング / ゲノムインプリンティング / MEK阻害剤 / 胚性幹細胞 / 胚盤胞 / エピジェネティクス / 幹細胞
Outline of Final Research Achievements

Embryonic stem (ES) cells, which can maintain almost infinite pluripotency, are established by the culture of internal cell mass (ICM) of blastocyst that appear transiently in the very early stages of development. The molecular mechanism how cells in an internal cell mass, which is destined to differentiate in a few days in vivo, acquire the ability to maintain undifferentiated state permanently has remained unexplored. In this project, we focused on the culture condition affecting the state of genome imprinting, which is a mechanism of single-allele gene expression. As a result, we succeeded in establishing a novel method for the establishment and culture of ES cells that minimizes the use of MEK inhibitors that induce genome-wide DNA demethylation.

Academic Significance and Societal Importance of the Research Achievements

胚性幹細胞(ES細胞)は基礎・応用両方において広く用いられている。特に、高い遺伝的恒常性を活かし、スクリーニングや発生分化研究に汎用されている。しかし、近年用いられている培養条件では、DNAのメチル化状態がゲノム全体で低下し、生体内の胚のエピジェネティック状態を反映していないことが問題となっていた。本研究成果で報告された新規のES細胞樹立、培養法はこの問題を解決できる可能性が高い。また、永続的な未分化性の獲得は細胞のがん化とも共通する変化が認められる。本研究成果は、未分化性維持機構の解明のみならず、将来的には生体内の細胞の変質、維持の背景にある分子メカニズムの解明に貢献するものと考えている。

Report

(4 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (19 results)

All 2019 2018 2017 2016

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (16 results) (of which Int'l Joint Research: 4 results,  Invited: 7 results)

  • [Journal Article] Nucleus‐localized adiponectin is survival gatekeeper through miR‐214‐mediated AIFM2 regulation2019

    • Author(s)
      Cho Junkwon、Teshigawara Rika、Kameda Masahiro、Yamaguchi Shinpei、Tada Takashi
    • Journal Title

      Genes to Cells

      Volume: 24 Issue: 2 Pages: 126-138

    • DOI

      10.1111/gtc.12658

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Novel miRNA biomarkers for genotoxicity screening in mouse2018

    • Author(s)
      Oka Hiroyuki、Masuno Koichi、Uehara Takeki、Okamoto Toru、Matsuura Yoshiharu、Nakano Toru、Yamaguchi Shinpei
    • Journal Title

      Toxicology

      Volume: 404-405 Pages: 68-75

    • DOI

      10.1016/j.tox.2018.05.009

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Distinct requirements for the maintenance and establishment of mouse embryonic stem cells2018

    • Author(s)
      Konishi Riyo、Nakano Toru、Yamaguchi Shinpei
    • Journal Title

      Stem Cell Research

      Volume: 31 Pages: 55-61

    • DOI

      10.1016/j.scr.2018.07.005

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Stress-dependent activation of p53 induces the transition to 2-cell embryo-like state of mouse ESC2019

    • Author(s)
      山口新平
    • Organizer
      International Symposium on Epigenome 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Transition to Zscan4+ state is induced by the stress-dependent p53 activation in mouse ESC2018

    • Author(s)
      山口新平
    • Organizer
      West Lake Symposium on Epigenetics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Stress-dependent p53 activation induces 2-cell embryo-like state in ESCs2018

    • Author(s)
      山口新平
    • Organizer
      第一回動的恒常性研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] p53活性化を通じたES細胞の動的恒常性維持2018

    • Author(s)
      山口新平
    • Organizer
      第6回X染色体研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] The mechanism and role of loss-of-imprinting in mouse embryonic stem cell2018

    • Author(s)
      山口新平
    • Organizer
      Cold Spring harbor meeting Epigenetics and Chromatin
    • Related Report
      2018 Annual Research Report
  • [Presentation] マウス胚性幹細胞の永続的な未分化状態の確立と維持を支える分子基盤2018

    • Author(s)
      山口 新平 、小西 理予、前田 隆寛、木村 康義、仲野 徹
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ストレス依存的なp53の活性化により引き起こされるZscan4陽性細胞の役割2018

    • Author(s)
      前田 隆寛、木村 康義、仲野 徹、山口 新平
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Molecular mechanism of acquisition of 5hmC at pericentric region in mouse primordial germ cell2018

    • Author(s)
      山口新平
    • Organizer
      新学術研究領域「生殖細胞のエピゲノムダイナミクスとその制御」公開シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] ES 細胞の樹立におけるインプリンティング破綻の機構と役割2017

    • Author(s)
      山口新平
    • Organizer
      第11回日本エピジェネティクス研究会年会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] ES 細胞の樹立におけるX染色体の活性化とインプリンティング破綻2017

    • Author(s)
      山口新平
    • Organizer
      第5回X染色体研究会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Physiological function of Tet1 in germ and somatic cell development2017

    • Author(s)
      Shinpei Yamaguchi
    • Organizer
      International Symposium 2017 Development and Diseases
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The physiological role and underlying mechanism of pericentric 5hmC in mouse primordial germ cell2017

    • Author(s)
      Shinpei Yamaguchi
    • Organizer
      Symposium on Epigenome Dynamics and Regulation in Germ cells
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Tetタンパク質による遺伝子発現調節領域の能動的脱メチル化2016

    • Author(s)
      山口新平
    • Organizer
      第10回日本エピジェネティクス研究会年会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Molecular function of Tet1 in the epigenetic reprogramming through mouse germ cell development2016

    • Author(s)
      山口新平
    • Organizer
      第88回日本遺伝学会大会
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Function of Tet proteins in the maintenance and removal of DNA methylation in Cp G islands2016

    • Author(s)
      山口新平
    • Organizer
      第39 回日本分子生物学会年会
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] ES細胞における未分化状態の確立と維持に機能するシグナル経路2016

    • Author(s)
      小西理予、仲野徹、山口新平
    • Organizer
      第39 回日本分子生物学会年会
    • Related Report
      2016 Annual Research Report

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Published: 2016-04-21   Modified: 2021-12-27  

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