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Novel gene expression regulatory system in the brain and its dysregulation in disorder/disease

Research Project

Project/Area Number 19K07394
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49010:Pathological biochemistry-related
Research InstitutionOkinawa Institute of Science and Technology Graduate University

Principal Investigator

Matsuura Ken  沖縄科学技術大学院大学, 神経回路ユニット, 技術員 (10625742)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsCCR4-NOT / 遺伝子発現制御 / 脳神経
Outline of Research at the Start

真核生物の遺伝子発現制御においては、mRNAの翻訳・分解のバランス制御が恒常性維持や環境刺激依存的な変化をする上で鍵となる。CCR4-NOT(CNOT)複合体はmRNAの分解と翻訳抑制の二つの重要な働きを持つ。
神経細胞のRNA顆粒における転写後制御異常は、脆弱性X症候群など様々な神経・精神疾患の原因になっており、CNOT複合体の関与も疑われる。本研究では、先端的オミックス(包括的)解析を駆使する事により、神経細胞の遺伝子発現制御におけるCNOT複合体の作用機序やターゲット遺伝子、更にはその生理的機能の解析により、その破綻がもたらす障害・疾患の全体像解明を目ざす。

Outline of Final Research Achievements

The CCR4-NOT (CNOT) complex plays a major role in post-transcriptional gene silencing and has two important functions: mRNA degradation and translation inhibition. However, little was known about the role of the CNOT complex in the nervous system. In this study, we conducted omics analyses of gene expression and some behavioral experiments using multiple mouse strains in which the different components of the CNOT complex were deficient in forebrain neurons. These mice exhibited behavioral abnormalities such as hyperactivity and learning disabilities. The omics analyses suggested that the CNOT complex may play a role in protein quality control in neurons. These results are expected to help elucidate the pathogenesis of diseases caused by disruption of gene expression control mechanisms.

Academic Significance and Societal Importance of the Research Achievements

近年、タンパク質翻訳の増大による神経ネットワークの過剰な興奮が自閉症に繋がる事が提唱されており、CNOT3が自閉症リスク遺伝子候補として同定された。更に、CNOT9の新規突然変異を持つ患者は発達・知的障害やてんかんを起こすことが報告されるなど、次々とCNOT変異疾患が明らかになっている。本研究の成果は、これまで分かっていなかったCNOT複合体の脳神経系における役割を、様々なCNOT変異マウスを用いる事により、どのような遺伝子変動があるか、どのような行動異常を呈するかなどを解明しており、脳神経系におけるCNOT複合体の遺伝子発現制御御機構の破綻による障害および疾患の理解に寄与する事が期待される。

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

    (6 results)

All 2022 2021 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 1 results,  Open Access: 2 results) Presentation (3 results) (of which Invited: 1 results) Book (1 results)

  • [Journal Article] Synaptotagmin 2 is ectopically overexpressed in excitatory presynapses of a widely used CaMKΙΙα-Cre mouse line2022

    • Author(s)
      Matsuura Ken、Mohamed Haytham M.A.、Youssef Mohieldin M.M.、Yoshida Yutaka、Yamamoto Tadashi
    • Journal Title

      iScience

      Volume: 25 Issue: 8 Pages: 104692-104692

    • DOI

      10.1016/j.isci.2022.104692

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synaptotagmin 2 is ectopically overexpressed in excitatory presynapses of a widely used CaMKIIα-Cre mouse line2021

    • Author(s)
      Matsuura K, Mohamed H, Yousef M, Yamamoto T
    • Journal Title

      bioRxiv

      Volume: 450492

    • Related Report
      2021 Research-status Report
    • Open Access
  • [Presentation] Synaptotagmin 2 is ectopically overexpressed in excitatory presynapses of a widely used CaMK2a-Cre mouse line2021

    • Author(s)
      Matsuura K, Mohamed H, Yousef M, Yamamoto T
    • Organizer
      The Molecular Biology Society of Japan
    • Related Report
      2021 Research-status Report
  • [Presentation] The role of CCR4-NOT dependent post-transcriptional regulation in mammalian nervous system2020

    • Author(s)
      松浦憲
    • Organizer
      日本分子生物学会, ワークショップ
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Investigation of the role of CNOT9 in mature brain2019

    • Author(s)
      Ken Matsuura, Tadashi Yamamoto
    • Organizer
      CCR4-NOT研究会
    • Related Report
      2019 Research-status Report
  • [Book] Medical Science Digest2020

    • Author(s)
      松浦憲、山本雅
    • Publisher
      ニューサイエンス社
    • Related Report
      2020 Research-status Report

URL: 

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

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