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Analysis of neural stem cell regulatory mechanisms using a novel light manipulation system

Research Project

Project/Area Number 20K06667
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 44020:Developmental biology-related
Research InstitutionKyoto University

Principal Investigator

Yamada Mayumi  京都大学, 医生物学研究所, 特定准教授 (50583457)

Project Period (FY) 2020-04-01 – 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 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords神経幹細胞 / 光操作 / ニューロン分化 / 転写因子 / 遺伝子発現 / 細胞増殖 / RNA-seq解析 / 分化運命決定因子 / RNAシークエンス解析 / 遺伝子ネットワーク / 光遺伝学 / 細胞分化 / Tetシステム / 神経発生 / RNAシークエンス / RNA-seq / ニューロン
Outline of Research at the Start

光作動性Tetシステムを用いて、培養神経幹細胞において、分化運命決定因子Ascl1のダイナミックな発現を人工的に光制御し、神経幹細胞の増殖およびニューロン分化過程におけるAscl1のターゲット因子を探索する。さらに、光作動性Tetシステムを用いてAscl1やそのターゲット因子の発現を体系的に光操作し、これらの因子がどのように協調的に機能して、ニューロン分化のタイミングを制御しているのかを解析する。さらに、脳組織中においてもニューロン分化運命決定因子群の発現の光照射を試みる。これらの解析は、ヒトの神経変性疾患・神経障害の治療や、再生医学に適応するための新規戦略の開発に繋がると期待される。

Outline of Final Research Achievements

During cell proliferation and differentiation of neural stem cells, it has become clear that a group of genes that control differentiation fate exhibit dynamic expression changes, such as oscillatory expression, suggesting that they play an important role in controlling the accuracy and timing of cell proliferation and differentiation. In this study, I have improved the photo-activatable Tet system and established a system to artificially regulate gene expression in neural stem cells. Furthermore, I used such as light manipulation technique to optically control the expression of Ascl1, a differentiation fate determinant in neural stem cells and used RNA sequencing analysis to search for downstream genes of Ascl1 during neural stem cell proliferation and neuronal differentiation, and to analyze their expressions.

Academic Significance and Societal Importance of the Research Achievements

個々の遺伝子が示すダイナミックな発現変動の機能的意義が明らかになれば、神経幹細胞を対象とした再生医療の発展が期待される。しかし、これまでに報告されている既存の遺伝子発現操作技術では、分化運命決定因子が示す数時間周期の発現変動の機能的意義を検証することは不可能であった。本研究で改良した光作動性Tetシステムは優れた時空間分解能をもって遺伝子発現ダイナミクスを人工的に制御することができる。そのため、本研究の解析は神経幹細胞の制御メカニズムの解明だけではなく、ヒトの神経変性疾患・神経障害の治療や、再生医学に適応するための新規戦略の開発に繋がると期待される。

Report

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

    (15 results)

All 2023 2022 2021 2020 Other

All Journal Article (8 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 8 results,  Open Access: 8 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 4 results) Remarks (1 results)

  • [Journal Article] Enhancement of Vivid-based photo-activatable Gal4 transcription factor in mammalian cells2023

    • Author(s)
      Nagasaki, S.C., Fukuda, T.D., Yamada, M., Suzuki, Y.I., Kakutani, R., Guy, A.T. and *Imayoshi, I.
    • Journal Title

      Cell Structure and Function

      Volume: 48 Issue: 1 Pages: 31-47

    • DOI

      10.1247/csf.22074

    • ISSN
      0386-7196, 1347-3700
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Functional rejuvenation of aged neural stem cells by Plagl2 and anti-Dyrk1a activity2022

    • Author(s)
      Kaise Takashi、Fukui Masahiro、Sueda Risa、Piao Wenhui、Yamada Mayumi、Kobayashi Taeko、Imayoshi Itaru、Kageyama Ryoichiro
    • Journal Title

      Genes & Development

      Volume: 36 Issue: 1-2 Pages: 23-37

    • DOI

      10.1101/gad.349000.121

    • NAID

      120007185924

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Separate optogenetic manipulation of Nerve/glial antigen 2 (NG2) glia and mural cells using the NG2 promoter.2022

    • Author(s)
      Oishi M, Stefan P, Yamazaki Y, Unekawa M, Adachi R, Yamada M, Imayoshi I, Abe Y, Steinhauser C, Tanaka KF
    • Journal Title

      Glia

      Volume: 71 Issue: 2 Pages: 317-333

    • DOI

      10.1002/glia.24273

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cell cycle arrest determines adult neural stem cell ontogeny by an embryonic Notch-nonoscillatory Hey1 module2021

    • Author(s)
      Harada Yujin、Yamada Mayumi、Imayoshi Itaru、Kageyama Ryoichiro、Suzuki Yutaka、Kuniya Takaaki、Furutachi Shohei、Kawaguchi Daichi、Gotoh Yukiko
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 6562-6562

    • DOI

      10.1038/s41467-021-26605-0

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] An Optimized Preparation Method for Long ssDNA Donors to Facilitate Quick Knock-In Mouse Generation2021

    • Author(s)
      Inoue Yukiko U.、Morimoto Yuki、Yamada Mayumi、Kaneko Ryosuke、Shimaoka Kazumi、Oki Shinji、Hotta Mayuko、Asami Junko、Koike Eriko、Hori Kei、Hoshino Mikio、Imayoshi Itaru、Inoue Takayoshi
    • Journal Title

      Cells

      Volume: 10 Issue: 5 Pages: 1076-1076

    • DOI

      10.3390/cells10051076

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Optimization of light-inducible Gal4/UAS gene expression system in mammalian cells2020

    • Author(s)
      Yamada M., Nagasaki C. S., Suzuki Y., Imayoshi I.
    • Journal Title

      iScience

      Volume: 23 Issue: 9 Pages: 101506-101506

    • DOI

      10.1016/j.isci.2020.101506

    • NAID

      120006884197

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Light-mediated Control of Gene Expression in Mammalian Cells.2020

    • Author(s)
      Yamada M, Nagasaki C. S, Ozawa T, Imayoshi I.
    • Journal Title

      Neuroscience Research

      Volume: 152 Pages: 66-77

    • DOI

      10.1016/j.neures.2019.12.018

    • NAID

      120006888020

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Down syndrome cell adhesion molecule like-1 (DSCAML1) links the GABA system and seizure susceptibility.2020

    • Author(s)
      Hayase Y, Amano S, Hashizume K, Tominaga T, Miyamoto H, Kanno Y, Ueno-Inoue Y, Inoue T, Yamada M, Ogata S, Balan S, Hayashi K, Miura Y, Tokudome K, Ohno Y, Nishijo T, Momiyama T, Yanagawa Y, Takizawa A, Mashimo T, Serikawa T, Sekine A, Nakagawa E, Takeshita E, Yoshikawa T, Waga C, Inoue K, Goto YI, Nabeshima Y, et al.
    • Journal Title

      Acta Neuropathol Commun.

      Volume: 8 Issue: 1 Pages: 206-206

    • DOI

      10.1186/s40478-020-01082-6

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 光操作技術とNGS解析を用いた、神経幹細胞の制御メカニズムの解明2022

    • Author(s)
      山田真弓
    • Organizer
      第18回成体脳新生ニューロン懇談会
    • Related Report
      2022 Annual Research Report 2021 Research-status Report
  • [Presentation] 遺伝子発現の光操作技術の開発と応用2022

    • Author(s)
      山田真弓
    • Organizer
      第45回日本分子生物学会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 光操作技術を用いた神経幹細胞の制御メカニズムの解析2022

    • Author(s)
      山田真弓、長崎真治、Seongchun Yang、今吉格
    • Organizer
      Neuro2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 「青色光」による遺伝子スイッチの制御2021

    • Author(s)
      山田真弓
    • Organizer
      バイオインダストリー協会“未来へのバイオ技術”勉強会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Analysis of neural stem cell regulatory mechanisms using optogenetics2021

    • Author(s)
      Mayumi Yamada, Itaru Imayoshi
    • Organizer
      第16回生命医科学研究所ネットワーク国際シンポジウム
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Dynamic transcriptional regulation of neural stem cells by bHLH factors2020

    • Author(s)
      山田真弓
    • Organizer
      第63回日本神経化学会大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Remarks] researchmap

    • URL

      http://researchmap.jp/myamada

    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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