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Role of DNA methylation establishment during embryonic period in adult physiology

Research Project

Project/Area Number 19K08324
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionKumamoto University

Principal Investigator

OKANO Masaki  熊本大学, 発生医学研究所, 准教授 (50360863)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsDNAメチル化 / エピジェネティクス / ES細胞 / Dnmt3a
Outline of Research at the Start

胎生期のエピジェネティック状態が成体期の生理機能に影響を及ぼすことが示唆されているが、その因果関係を明確に示した例は限られている。本研究はマウスを動物モデルとして用い、ゲノムDNAメチル化形成過程を制御するDNAメチル化酵素の機能を、胎生期特異的に欠損もしくは回復させることによって、胎生期におけるエピジェネティクス形成が成体の生理機能に与える影響を明らかにする。

Outline of Final Research Achievements

With the aim of elucidating the long-term effects of fetal changes in DNA chemical modification on health and physiological function after birth, we have developed an experimental system which enables us to manipulate gene function of Dnmt3a, a critical enzyme for regulating DNA chemical modification. Using mouse embryonic stem cells, we engineered Dnmt3a gene to generate a mutant allele which conditionally restores its function from deficient state to normal state. We validated its operation in embryonic stem cells.

Academic Significance and Societal Importance of the Research Achievements

本課題で作製したDnmt3a遺伝子アリル(Dnmt3a-floxSTOP)は、胎生期におけるエピジェネティック状態変化の役割や長期的影響を明らかにするためのあらたなツールとなりうる。近年、胎生期・発達期といったライフステージの初期において経験する環境因子が、将来の健康と疾患のかかりやすさに影響を及ぼしうると考える学説が注目されている。本研究がそのしくみの基礎的理解に寄与することが期待される。

Report

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

    (2 results)

All 2021 2020

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

  • [Journal Article] The Temporal Order of DNA Replication Shaped by Mammalian DNA Methyltransferases2021

    • Author(s)
      Takebayashi Shin-ichiro、Ryba Tyrone、Wimbish Kelsey、Hayakawa Takuya、Sakaue Morito、Kuriya Kenji、Takahashi Saori、Ogata Shin、Hiratani Ichiro、Okumura Katsuzumi、Okano Masaki、Ogata Masato
    • Journal Title

      Cells

      Volume: 10 Issue: 2 Pages: 266-266

    • DOI

      10.3390/cells10020266

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] MEAF6 is essential for cell proliferation and plays a role in the assembly of KAT7 complexes2020

    • Author(s)
      Matsuura Kumi、Tani Naoki、Usuki Shingo、Torikai-Nishikawa Satomi、Okano Masaki、Niwa Hitoshi
    • Journal Title

      Experimental Cell Research

      Volume: 396 Issue: 1 Pages: 112279-112279

    • DOI

      10.1016/j.yexcr.2020.112279

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access

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Published: 2019-04-18   Modified: 2024-01-30  

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