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Intrauterine live imaging of embryonic neural stem cells

Research Project

Project/Area Number 19K22683
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 56:Surgery related to the biological and sensory functions and related fields
Research InstitutionNagoya University

Principal Investigator

Miyata Takaki  名古屋大学, 医学系研究科, 教授 (70311751)

Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords生体内イメージング / 細胞分裂 / 二光子顕微鏡 / 神経幹細胞 / 細胞移動 / 器官形成 / ライブイメージング / ミクログリア / マクロファージ / ペリサイト / 発生 / マウス / 細胞増殖 / 細胞分化 / 子宮内イメージング / 細胞周期 / 母胎連関 / Fucci / インビボイメージング / 脳発生
Outline of Research at the Start

「母体状態・薬剤が胎生期器官の細胞周期に及ぼす影響:子宮内ライブ評価系の構築」は,器官形成期に,ヒト胎児の種々の組織内で進行する細胞周期に対して母体の全身状態の急性変化や薬剤がどのような影響を及ぼしうるかに関して,産婦人科学はもとより,幅広い医学領域にとって有用となる全く新しい知見を得ることをめざし,マウスを用いた鋭敏な評価系を開発する.

Outline of Final Research Achievements

Recent studies have explored the dynamic behaviors of mammalian neural progenitor cells (NPCs) using slice cultures in which three-dimensional systems conserve in vivo-like environments to a considerable degree. However, live observation of NPCs existing truly in vivo has yet to be established in mammals. Here, we performed intravital two-photon microscopic observation of NPCs in the developing cerebral cortex in utero. Fetuses in the uterine sac were immobilized and observed through a window made in the uterine wall and the amniotic membrane while monitoring blood circulation, which enabled us to quantitatively assess NPC behaviors, such as division and interkinetic nuclear migration, at embryonic day (E) 13 and E14. This study will facilitate future understanding of how organogenetic cellular behaviors occur or are pathologically influenced by the systemic maternal condition and/or maternal-fetal relationships.

Academic Significance and Societal Importance of the Research Achievements

子宮内で育つ胎児の器官において発生中の組織が正しく成長するのに不可欠な細胞産生(細胞分裂)に関しては,これまで,間接的な方法(核酸アナログ物質の投与からの追跡)を通じて把握されるのみであった.これでは,母体の変調がどう子宮内胎児の器官形成の場における細胞産生に即座の影響を及ぼしうるかというような,鋭敏な(時間分解能に優れた)把握をすることは不可能であった.本研究が目指し,一定の達成を果たした「子宮内のマウス胎仔の脳原基における細胞産生」の「直接,ライブでの観察」は,今後,高血圧,糖尿病などの疾患,薬剤の影響などをリアルタイムで調べていく取り組みの基盤となり得る.

Report

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

    (11 results)

All 2022 2021 2020

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (4 results)

  • [Journal Article] Embryonic Pericytes Promote Microglial Homeostasis and Their Effects on Neural Progenitors in the Developing Cerebral Cortex2022

    • Author(s)
      Hattori Y, Itoh H, Tsugawa Y, Nishida Y, Kurata K, Uemura A, Miyata T
    • Journal Title

      The Journal of Neuroscience

      Volume: 42 Issue: 3 Pages: 362-376

    • DOI

      10.1523/jneurosci.1201-21.2021

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Developmentally interdependent stretcher-compressor relationship between the embryonic brain and the surrounding scalp in the preosteogenic head2022

    • Author(s)
      Tsujikawa K, Saito K, Nagasaka A, Miyata T
    • Journal Title

      Developmental Dynamics

      Volume: 2022 Issue: 7 Pages: 451-451

    • DOI

      10.1002/dvdy.451

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparison of the Mechanical Properties Between the Convex and Concave Inner/Apical Surfaces of the Developing Cerebrum.2021

    • Author(s)
      Nagasaka A and Miyata T
    • Journal Title

      Front. Cell Dev. Biol.

      Volume: 9 Pages: 702068-702068

    • DOI

      10.3389/fcell.2021.702068

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mechanical collaboration between the embryonic brain and the surrounding scalp tissues2021

    • Author(s)
      Tsujikawa K, Saito K, Nagasaka A, Miyata T
    • Journal Title

      bioRxiv

      Volume: 5 Pages: 442865-442865

    • DOI

      10.1101/2021.05.05.442865

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Transient microglial absence assists postmigratory cortical neurons in proper differentiation2020

    • Author(s)
      Yuki Hattori, Yu Naito, Yoji Tsugawa, Shigenori Nonaka, Hiroaki Wake, Takashi Nagasawa, Takaki Miyata
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 1631-1631

    • DOI

      10.1038/s41467-020-15409-3

    • NAID

      120006841707

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Two-photon microscopic observation of cell-production dynamics in the developing mammalian neocortex in utero2020

    • Author(s)
      Kawasoe, R, Shinoda, T, Hattori, Y, Nakagawam M, Quang Pham, T, Tanaka, Y, Sagou, K, Saito, K, Katsuki, S, Kotani, T, Sano, A, Fujimori, T, Miyata, T.
    • Journal Title

      Development, Growth & Differentiation

      Volume: 62 Issue: 2 Pages: 118-128

    • DOI

      10.1111/dgd.12648

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 大脳皮質の発生における力学2020

    • Author(s)
      宮田卓樹
    • Journal Title

      Clinical Neuroscience

      Volume: 38 Pages: 1510-1510

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 胎生期の脳の成長と周囲頭皮組織のなす力学的相互作用と協働的形態形成2022

    • Author(s)
      辻川 幸一郎, 齋藤 加奈子, 長坂 新, 宮田 卓樹
    • Organizer
      第127回 日本解剖学会全国学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 胎生期の脳と周囲頭皮組織の力学的相互作用について2021

    • Author(s)
      辻川 幸一郎, 齋藤 加奈子, 長坂 新, 宮田 卓樹
    • Organizer
      日本解剖学会中部支部学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 脳室面に存在するElast inは、発生期大脳の力学的特性を担うことで脳発生に関与している2021

    • Author(s)
      篠田友錆,宮田卓樹
    • Organizer
      第126回日本解剖学会全国学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] 胎生期大脳におけるミクログリア分布の時空間的制御とその生理学的意義2020

    • Author(s)
      服部祐季、宮田卓樹
    • Organizer
      第 10 回名古屋大学医学系研究科・生理学研究所合同シンポジウム
    • Related Report
      2020 Research-status Report

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Published: 2019-07-04   Modified: 2023-01-30  

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