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Elucidation of the mechanism and physiological significance of cortical neural propagation using wide-field two-photon microscope

Research Project

Project/Area Number 20K06934
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 46030:Function of nervous system-related
Research InstitutionThe University of Tokyo

Principal Investigator

Ota Keisuke  東京大学, 大学院医学系研究科(医学部), 助教 (40610382)

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: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords広視野2光子励起顕微鏡 / カルシウムイメージング / 大脳皮質 / 機能的ネットワーク / スモールワールドネットワーク / ハブ細胞 / 自動細胞検出 / アデノ随伴ウイルス / 2光子励起顕微鏡 / ネットワーク解析 / カルシウムセンサー / スモールワールド・ネットワーク / 神経伝播 / スケールフリー・ネットワーク / 広視野2光子顕微鏡
Outline of Research at the Start

近年、大脳皮質内の活動が時々刻々と異なる脳領域に伝わる神経活動(神経伝播)が報告されている。これは同質の情報が時間に伴って異なる脳領域に伝わることを表す。この神経伝播は、異なる脳の部位はそれぞれ異なった機能を担うとする脳機能局在論とは相反する情報処理様式と言える。そこで本研究では神経伝播を新しい情報処理様式として捉える。広視野2光子顕微鏡を使って1つ1つの神経細胞の活動を記録し、神経伝播を生み出す大脳皮質のネットワークダイナミクスを追う。

Outline of Final Research Achievements

The brain is a collection of parts that play different roles, and neurons in each brain region form neural circuits through synapses, and higher brain functions are thought to arise in these neural circuits. However, no observational system has been established to measure neural activity with single-cell resolution across multiple regions, and the functional structure of neural circuits over a wide area has remained unknown. We used a wide-field two-photon excitation microscope, FASHIO-2PM, to measure more than 16,000 neural activities of L2 excitatory neurons in an awake mouse and analyzed functional networks defined by the neural activity. It was revealed that the functional networks of the cortex have the propensity of a small-world network and the presence of rare hub cells that are cooperatively active with more than 100 neurons.

Academic Significance and Societal Importance of the Research Achievements

生きた動物の脳から単一神経細胞の活動を大規模に計測し、100以上の神経細胞と協調的に活動する機能的ハブ細胞を発見した。ハブ細胞の存在率は極めて低く、これは各神経細胞の活動が脳システム全体に与える影響力は一様ではなく、細胞ごとに偏っている可能性を示唆している。またスモールワールドネットワークの特性は、大脳皮質は局所的な細胞間だけではなく、物理的距離が離れた細胞であっても、神経活動の情報を効率的に共有していることを意味している。すなわち脳は、情報処理においてコストがかかりにくいエコなシステムであること示唆する結果を得た。

Report

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

    (18 results)

All 2022 2021 2020 Other

All Journal Article (9 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Remarks (3 results)

  • [Journal Article] Low computational-cost cell detection method for calcium imaging data2022

    • Author(s)
      Ito Tsubasa、Ota Keisuke、Ueno Kanako、Oisi Yasuhiro、Matsubara Chie、Kobayashi Kenta、Ohkura Masamichi、Nakai Junichi、Murayama Masanori、Aonishi Toru
    • Journal Title

      Neuroscience Research

      Volume: 179 Pages: 39-50

    • DOI

      10.1016/j.neures.2022.02.008

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Breaking trade-offs: Development of fast, high-resolution, wide-field two-photon microscopes to reveal the computational principles of the brain2022

    • Author(s)
      Ota Keisuke、Uwamori Hiroyuki、Ode Takahiro、Murayama Masanori
    • Journal Title

      Neuroscience Research

      Volume: 179 Pages: 3-14

    • DOI

      10.1016/j.neures.2022.03.010

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 大脳新皮質の機能的ネットワーク特性を明らかにする広視野高速2光子顕微鏡2022

    • Author(s)
      太田桂輔, 村山正宜
    • Journal Title

      月刊「細胞

      Volume: 54 Pages: 24-26

    • Related Report
      2022 Annual Research Report
  • [Journal Article] 広視野2光子顕微鏡FASHIO-2PMの開発とその高機能化に向けて2022

    • Author(s)
      上森寛元, 太田桂輔, 村山正宜
    • Journal Title

      生体の科学

      Volume: 73 Pages: 426-427

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Protocol for cortical-wide field-of-view two-photon imaging with quick neonatal adeno-associated virus injection2021

    • Author(s)
      Oomoto Ikumi、Uwamori Hiroyuki、Matsubara Chie、Odagawa Maya、Kobayashi Midori、Kobayashi Kenta、Ota Keisuke、Murayama Masanori
    • Journal Title

      STAR Protocols

      Volume: 2 Issue: 4 Pages: 101007-101007

    • DOI

      10.1016/j.xpro.2021.101007

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Improved neuronal ensemble inference with generative model and MCMC2021

    • Author(s)
      Shun Kimura, Keisuke Ota, Koujin Takeda
    • Journal Title

      Journal of Statistical Mechanics: Theory and Experiment

      Volume: 2021 Pages: 063501-063501

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Imaging data analysis using non-negative matrix factorization2021

    • Author(s)
      Aonishi Toru、Maruyama Ryoichi、Ito Tsubasa、Miyakawa Hiroyoshi、Murayama Masanori、Ota Keisuke
    • Journal Title

      Neuroscience Research

      Volume: - Pages: 51-56

    • DOI

      10.1016/j.neures.2021.12.001

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fast, cell-resolution, contiguous-wide two-photon imaging to reveal functional network architectures across multi-modal cortical areas2021

    • Author(s)
      K. Ota, Y. Oisi, T. Suzuki, M. Ikeda, Y. Ito, T. Ito, H. Uwamori, K. Kobayashi, M. Kobayashi, M. Odagawa, C. Matsubara, Y. Kuroiwa, M. Horikoshi, J. Matsushita, H. Hioki, M. Ohkura, J. Nakai, M. Oizumi, A. Miyawaki, T. Aonishi, T. Ode and M. Murayama
    • Journal Title

      Neuron

      Volume: - Issue: 11 Pages: 1-15

    • DOI

      10.1016/j.neuron.2021.03.032

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Wide Field Two-photon Excitation Microscope for <i>In Vivo</i> Calcium Imaging with Single Cell Resolution2020

    • Author(s)
      Ota Keisuke、Ode Takahiro、Murayama Masanori
    • Journal Title

      The Brain & Neural Networks

      Volume: 27 Issue: 2 Pages: 55-65

    • DOI

      10.3902/jnns.27.55

    • NAID

      130007882385

    • ISSN
      1340-766X, 1883-0455
    • Year and Date
      2020-06-05
    • Related Report
      2020 Research-status Report
    • Open Access
  • [Presentation] 広視野高速2光子顕微鏡 FASHIO-2PM による脳神経ネットワークのin vivo イメージング2022

    • Author(s)
      太田桂輔、村山正宜
    • Organizer
      日本顕微鏡学会 第46回関東支部講演会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Fast and wide field-of-view two-photon imaging with a single-cell resolution to reveal functional network proprieties.2021

    • Author(s)
      Keisuke Ota, Yasuhiro Oisi, Muneki Ikeda, Yoshiki Ito, Hiroyuki Uwamori, Kimura Shun, Kenta Kobayashi, Yoshinori Kuroiwa, Masaru Horikoshi, Junya Matsushita, Hiroyuki Hioki, Masamichi Ohkura, Junichi Nakai, Koujin Takeda, Masafumi Oizumi, Atsushi Miyawaki, Toru Aonishi, Takahiro Ode, Bito Haruhiko, Masanori Murayama
    • Organizer
      第44回 日本神経科学大会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 広視野2光子顕微鏡によって明らかにされた大脳皮質の機能的ネットワーク2021

    • Author(s)
      太田桂輔
    • Organizer
      第13回 数理モデリング研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 広視野2光子顕微鏡による単一細胞解像度in vivoカルシウムイメージング2021

    • Author(s)
      太田桂輔
    • Organizer
      第49回 可視化情報シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] Fast, cell-resolution and wide field-of-view two-photon imaging to reveal functional small-world networks of the cortex2021

    • Author(s)
      K. Ota, Y. Oisi, T. Suzuki, M. Ikeda, Y. Ito, T. Ito, H. Uwamori, K. Kobayashi, M. Kobayashi, M. Odagawa, C. Matsubara, Y. Kuroiwa, M. Horikoshi, J. Matsushita, H. Hioki, M. Ohkura, J. Nakai, M. Oizumi, A. Miyawaki, T. Aonishi, T. Ode, M. Murayama
    • Organizer
      EMBL Symposium: Seeing is Believing
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Cortical functional network proprieties revealed by “FASHIO-2PM”, a fast scanning and wide-field two-photon microscope with single-cell resolution2021

    • Author(s)
      Keisuke Ota
    • Organizer
      第64回 日本神経化学会大会
    • Related Report
      2021 Research-status Report
  • [Remarks] 脳の宇宙を捉える顕微鏡-世界初、多領域にまたがる神経ネットワークのエコ特性を発見-

    • URL

      https://www.riken.jp/press/2021/20210420_1/

    • Related Report
      2021 Research-status Report
  • [Remarks] 脳はハブ細胞が存在するエコなシステムであった

    • URL

      https://www.jnss.org/news-topics?id=210608-01&u=fcf8a291ba5411489505b1a8200ca45b

    • Related Report
      2021 Research-status Report
  • [Remarks] 脳の宇宙を捉える顕微鏡

    • URL

      https://www.riken.jp/press/2021/20210420_1/index.html

    • Related Report
      2020 Research-status Report

URL: 

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

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