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Ex vivo optical imaging of human brain tissues for visualization of epileptogenic networks.

Research Project

Project/Area Number 19H03542
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 51030:Pathophysiologic neuroscience-related
Research InstitutionKomatsu University (2021-2022)
Niigata University (2019-2020)

Principal Investigator

Kitaura Hiroki  公立小松大学, 保健医療学部, 教授 (80401769)

Co-Investigator(Kenkyū-buntansha) 才津 浩智  浜松医科大学, 医学部, 教授 (40402838)
清水 宏  新潟大学, 脳研究所, 准教授 (40608767)
柿田 明美  新潟大学, 脳研究所, 教授 (80281012)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2021: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2020: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2019: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Keywordsてんかん / 光イメージング / 神経病理 / 海馬硬化症 / 限局性皮質異形成 / ヒト脳スライス / 光学的イメージング / 電気生理 / 光学的イメージング解析 / 3次元的形態解析 / ヒト / 病理学的解析 / ex vivo / 病態生理学 / 神経病理学 / ヒト脳スライス標本 / トランスクリプトーム解析 / イメージング / カルシウムイメージング / 病理組織学的解析
Outline of Research at the Start

てんかん焦点は発生異常のみならず腫瘍や炎症など多様な病因により形成される。そこで、本申請課題では個々の病理学的所見に対応した固有のてんかん原性機序が存在しているかを検証し、それらに最も適した制御法を検討する。高速共焦点顕微鏡を用いた単一神経細胞レベルのカルシウムイメージング法により、てんかん動的ネットワークを可視化して、その病態生理学的特徴を解析する。一連の実験結果を臨床データとも突き合わせ、実験生理学的なてんかん原性機序から見たてんかん病態の再構築を試み、それらに最適な制御方法を明らかにすることを目指す。

Outline of Final Research Achievements

We conducted optical imaging in acute brain slices taken from intractable epilepsy patients ex vivo.Epileptic focus were removed by surgeon and those brain blocks were immediately immersed in ice cold artificial CSF. We investigated epileptic foci of cavernous angioma, tuberous sclerosis, focal cortical dysplasia and hippocamus os mesial temporal lobe epilepsy. We found different manners of generation and prppagation in epileptiform activities consistent with histopathological features.Furthemore, we investigated pharmacological effect of new candidate of antiepileptic drugs in those focal tissues.

Academic Significance and Societal Importance of the Research Achievements

本研究は,実際のてんかん患者から切除された焦点組織の異常神経活動をミクロレベルで捕捉し、その制御を検討したするもので,そこから得られた成果は臨床研究と基礎研究を橋渡しする位置付けにある。こうした研究の方向性は、世界的に見ても独自性が高い。動物モデルを用いた実験系ではカバーできない病理学的多様性を対象としながらも、動物実験レベルの精密性と自由度を持った実験展開が可能である。そのため、ヒトの焦点組織を対象としながらも、まだ薬になっていない候補化合物を適用してその薬理作用の検討を行うことも可能とし、臨床的な薬物療法のエビデンスに貢献できるものである。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (17 results)

All 2022 2021 2020 2019

All Journal Article (10 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 10 results,  Open Access: 10 results) Presentation (7 results) (of which Invited: 4 results)

  • [Journal Article] USP10 Inhibits Aberrant Cytoplasmic Aggregation of TDP-43 by Promoting Stress Granule Clearance2022

    • Author(s)
      Takahashi Masahiko、Kitaura Hiroki、Kakita Akiyoshi、Kakihana Taichi、Katsuragi Yoshinori、Onodera Osamu、Iwakura Yuriko、Nawa Hiroyuki、Komatsu Masaaki、Fujii Masahiro
    • Journal Title

      Molecular and Cellular Biology

      Volume: 42 Issue: 3

    • DOI

      10.1128/mcb.00393-21

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Deep learning-based diagnosis of temporal lobe epilepsy associated with hippocampal sclerosis: An MRI study2021

    • Author(s)
      Ito Y, Fukuda M, Matsuzawa H, Masuda H, Kobayashi Y, Hasegawa N, Kitaura H, Kakita A, Fujii Y.
    • Journal Title

      Epilepsy Res

      Volume: 178 Pages: 106815-106815

    • DOI

      10.1016/j.eplepsyres.2021.106815

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reactive astrocytes contribute to epileptogenesis in patients with cavernous angioma2021

    • Author(s)
      Kitaura H, Hiraishi T, Itoh Y, Oishi M, Fujii Y, Fukuda M, Kakita A.
    • Journal Title

      Epilepsy Res

      Volume: 176 Pages: 106732-106732

    • DOI

      10.1016/j.eplepsyres.2021.106732

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Proteomic profile differentiating between mesial temporal lobe epilepsy with and without hippocampal sclerosis2020

    • Author(s)
      Furukawa Ayako、Kakita Akiyoshi、Chiba Yoichi、Kitaura Hiroki、Fujii Yukihiko、Fukuda Masafumi、Kameyama Shigeki、Shimada Atsuyoshi
    • Journal Title

      Epilepsy Research

      Volume: 168 Pages: 106502-106502

    • DOI

      10.1016/j.eplepsyres.2020.106502

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Longitudinal GluCEST MRI Changes and Cerebral Blood Flow in 5xFAD Mice2020

    • Author(s)
      Igarashi Hironaka、Ueki Satoshi、Kitaura Hiroki、Kera Tae、Ohno Ken、Ohkubo Masaki、Terumitsu-Tsujita Mika、Kakita Akiyoshi、Kwee Ingrid L
    • Journal Title

      Contrast Media & Molecular Imaging

      Volume: 2020 Pages: 1-12

    • DOI

      10.1155/2020/8831936

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Versatile whole-organ/body staining and imaging based on electrolyte-gel properties of biological tissues2020

    • Author(s)
      Susaki Etsuo A.、Shimizu Chika、Kuno Akihiro、Tainaka Kazuki、Li Xiang、Shibayama Mitsuhiro、Ueda Hiroki R. et al.
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 1982-1982

    • DOI

      10.1038/s41467-020-15906-5

    • NAID

      120006956725

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Skull diplo? is rich in aquaporin-42020

    • Author(s)
      Suzuki Yuji、Kitaura Hiroki、Nakamura Yukimi、Kakita Akiyoshi、Huber Vincent J.、Capozzoli Nicholas、Kwee Ingrid L.、Nakada Tsutomu
    • Journal Title

      Heliyon

      Volume: 6 Issue: 1 Pages: e03259-e03259

    • DOI

      10.1016/j.heliyon.2020.e03259

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] G3BP1 inhibits ubiquitinated protein aggregations induced by p62 and USP102019

    • Author(s)
      Anisimov S, Takahashi M, Kakihana T, Katsuragi Y, Kitaura H, Zhang L, Kakita A, Fujii M.
    • Journal Title

      Sci Rep

      Volume: 9(1) Issue: 1 Pages: 12896-12896

    • DOI

      10.1038/s41598-019-46237-1

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] USP10 is a critical factor for Tau-positive stress granule formation in neuronal cells2019

    • Author(s)
      Piatnitskaia S, Takahashi M, Kitaura H, Katsuragi Y, Kakihana T, Zhang L, Kakita A, Iwakura Y, Nawa H, Miura T, Ikeuchi T, Hara T, Fujii M
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 10591-10591

    • DOI

      10.1038/s41598-019-47033-7

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Reciprocal connectivity between secondary auditory cortical field and amygdala in mice.2019

    • Author(s)
      Tsukano H, Hou X, Horie M, Kitaura H, Nishio N, Hishida R, Takahashi K, Kakita A, Takebayashi H, Sugiyama S, Shibuki K
    • Journal Title

      Sci Rep.

      Volume: 9 Issue: 1 Pages: 19610-19610

    • DOI

      10.1038/s41598-019-56092-9

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Epileptogenic mechanisms in resected foci are different between LEAT and TS2021

    • Author(s)
      北浦弘樹
    • Organizer
      第10回生理研・霊長研・新潟脳研合同シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] The epileptogenic mechanisms of Tuberous Sclerosis investigated by ex vivo optical imaging2020

    • Author(s)
      北浦弘樹
    • Organizer
      第61回日本神経病理学会総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Visualization of epileptogenic activities in human hippocampal slices ex vivo.2020

    • Author(s)
      北浦弘樹
    • Organizer
      第97回日本生理学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] てんかん焦点組織の生理学的多様性2020

    • Author(s)
      北浦弘樹
    • Organizer
      愛知県医療療育総合センター発達障害研究所 公開セミナー
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 基礎から探るてんかん病態:臨床に役立つ知見2019

    • Author(s)
      北浦弘樹、福多真史、藤井幸彦、柿田明美
    • Organizer
      第53回日本てんかん学会 シンポジウム
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] てんかんにおけるグリアの役割:AMED研究のシーズ2019

    • Author(s)
      北浦弘樹、福多真史、藤井幸彦、柿田明美
    • Organizer
      第53回日本てんかん学会 シンポジウム
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] てんかんの病理2019

    • Author(s)
      北浦弘樹
    • Organizer
      第60回日本神経病理学会 教育セミナー
    • Related Report
      2019 Annual Research Report
    • Invited

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

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