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Proteins interacting with Nav1.1 may be potential therapeutic targets for epilepsy

Research Project

Project/Area Number 19K08284
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionNippon Medical School

Principal Investigator

Ogiwara Ikuo  日本医科大学, 医学部, 准教授 (30373286)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywordsてんかん / 電位依存性ナトリウムチャネル / タンパク質複合体 / タンパク複合体 / 自閉症
Outline of Research at the Start

難治てんかんと発達障害が特徴のDravet症候群の主因は電位依存性ナトリウムチャネルα1(SCN1A)遺伝子の変異である。ナトリウムチャネルα1の機能不全は抑制性神経細胞の出力を減弱させて脳の興奮性を高めて発作を発現させる。申請者は、α1と複合体を形成する複数のタンパクを同定し、このα1複合体の機能と役割を解明し、さらに、複合体形成制御機構を基盤に抑制性出力増強につながる治療戦略を見出す。もし新しい治療方策が見出されれば、治療開発を発展させる成果になる。

Outline of Final Research Achievements

Dravet syndrome is an infantile epileptic encephalopathy characterized with intractable epileptic seizures and developmental delay. Dravet syndrome is associated with loss of function mutations of the gene encoding voltage-gated sodium channel alpha 1 subunit. This study aimed to characterize protein complexes composed of sodium channel alpha 1. We found that sodium channel alpha 1 interacted with fibroblast growth factor homologues factor and synaptic protein. Although fibroblast growth factor homologues factor did not significantly altered properties of sodium channel alpha 1, these protein-protein interactions may regulate functions of sodium channel alpha 1.

Academic Significance and Societal Importance of the Research Achievements

ドラベ症候群は重篤な乳児期発症のてんかんです。新しい治療薬の開発が求められていて、その一つとして、電位依存性ナトリウムチャネルα1を標的する分子戦略を挙げることができます。本研究は、α1と相互作用するタンパク質として、線維芽細胞増殖因子相同因子とシナプス関連タンパク質を見出しました。そして、本研究はα1内にタンパク質間相互作用領域を同定しました。この領域はα1機能を調節できるドラベ症候群治療開発の標的となりうると期待されます。

Report

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

    (22 results)

All 2022 2021 2020 2019 Other

All Journal Article (4 results) (of which Open Access: 4 results,  Peer Reviewed: 3 results) Presentation (16 results) Remarks (2 results)

  • [Journal Article] Scn1a-GFP transgenic mouse revealed Nav1.1 expression in neocortical pyramidal tract projection neurons2021

    • Author(s)
      Yamagata Tetsushi、Ogiwara Ikuo、Tatsukawa Tetsuya、Otsuka Yuka、Mazaki Emi、Inoue Ikuyo、Tokonami Natsuko、Hibi Yurina、Itohara Shigeyoshi、Yamakawa Kazuhiro
    • Journal Title

      bioRxiv

      Volume: 2021 Pages: 437794-437794

    • DOI

      10.1101/2021.03.31.437794

    • Related Report
      2021 Annual Research Report
    • Open Access
  • [Journal Article] CRISPR/dCas9-based Scn1a gene activation in inhibitory neurons ameliorates epileptic and behavioral phenotypes of Dravet syndrome model mice2020

    • Author(s)
      Yamagata Tetsushi、Raveau Matthieu、Kobayashi Kenta、Miyamoto Hiroyuki、Tatsukawa Tetsuya、Ogiwara Ikuo、Itohara Shigeyoshi、Hensch Takao K.、Yamakawa Kazuhiro
    • Journal Title

      Neurobiology of Disease

      Volume: 141 Pages: 104954-104954

    • DOI

      10.1016/j.nbd.2020.104954

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Involvement of the C‐terminal domain in cell surface localization and G‐protein coupling of mGluR62020

    • Author(s)
      Rai Dilip、Akagi Takumi、Shimohata Atsushi、Ishii Toshiyuki、Gangi Mie、Maruyama Takuma、Wada‐Kiyama Yuko、Ogiwara Ikuo、Kaneda Makoto
    • Journal Title

      Journal of Neurochemistry

      Volume: - Issue: 4 Pages: 837-848

    • DOI

      10.1111/jnc.15217

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impaired cortico-striatal excitatory transmission triggers epilepsy2019

    • Author(s)
      Miyamoto Hiroyuki、Tatsukawa Tetsuya、Shimohata Atsushi、Yamagata Tetsushi、Suzuki Toshimitsu、Amano Kenji、Mazaki Emi、Raveau Matthieu、Ogiwara Ikuo、Oba-Asaka Atsuko、Hensch Takao K.、Itohara Shigeyoshi、Sakimura Kenji、Kobayashi Kenta、Kobayashi Kazuto、Yamakawa Kazuhiro
    • Journal Title

      Nature Communications

      Volume: 10 Issue: 1 Pages: 1917-1917

    • DOI

      10.1038/s41467-019-09954-9

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Analysis of interaction between voltage-gated sodium channel Nav1.1 and fibroblast growth factor homologous factor2022

    • Author(s)
      Ogiwara, I., Yin, C., Shimohata, A., Gangi, M., Kaneda, M.
    • Organizer
      第99回日本生理学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 自閉症モデルとしての電位依存性ナトリウムチャネルα2マウスの解析2021

    • Author(s)
      荻原郁夫、立川哲也、眞崎恵美、Maurice Montal、山川 和弘
    • Organizer
      第251回 生理学東京談話会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Screening of interacting proteins with voltage-gated sodium channel Nav1.12021

    • Author(s)
      Ogiwara, I.
    • Organizer
      第44回日本神経科学大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Analysis of protein candidates interacting with voltage-gated sodium channel Nav1.12021

    • Author(s)
      Ogiwara, I.
    • Organizer
      第98回日本生理学大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 代謝型グルタミン酸6型受容体の細胞膜発現におけるC末端領域の役割2021

    • Author(s)
      赤木 巧, Rai Dilip, 下畑 充志, 石井 俊行, 雁木 美衣, 丸山 拓真, 木山 裕子, 荻原 郁夫, 金田 誠
    • Organizer
      第98回日本生理学大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Identification of proteins that interact with voltage-gated sodium channel Nav1.12020

    • Author(s)
      Ogiwara, I.
    • Organizer
      第43回日本神経科学大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 代謝型グルタミン酸6型受容体C末端領域と相互作用するタンパク質の探索2020

    • Author(s)
      下畑 充志, 赤木 巧, 荻原 郁夫, 金田 誠
    • Organizer
      第43回日本神経科学大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 初代培養網膜双極細胞における代謝型グルタミン酸受容体6型の細胞内局在および膜発現の解析2020

    • Author(s)
      赤木 巧, 下畑 充志, 荻原 郁夫, 金田 誠
    • Organizer
      第43回日本神経科学大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Identification of binding partners of the voltage-gated sodium channel Nav1.12020

    • Author(s)
      Ogiwara I.
    • Organizer
      第97回日本生理学大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Involvement of the C-terminal domain in cell surface expression and G-protein coupling of mGluR62020

    • Author(s)
      Shimohata A, Rai D, Akagi T, Ishii T, Gangi M, Maruyama T, Kiyama Y, Ogiwara I, Kaneda M.
    • Organizer
      第97回日本生理学大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Membrane expression of mGluR6 transfected cultured retinal bipolar cells2020

    • Author(s)
      Akagi T, Shimohata A, Ogiwara I, Kaneda M.
    • Organizer
      第97回日本生理学大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Identification of proteins that interact with the voltage-gated sodium channel Nav1.12019

    • Author(s)
      Ogiwara I.
    • Organizer
      第42回日本神経科学大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Impaired excitatory neurotransmission in epilepsy, intellectual disability, autism and schizophrenia caused by sodium channel gene SCN2A mutations2019

    • Author(s)
      Yamakawa K, Miyamoto: H, Tatsukawa T, Yamagata T, Raveau M, Ogiwara I.
    • Organizer
      第42回日本神経科学大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Altered hippocampal replay underlies memory impairments in SCN2A heterozygous mice2019

    • Author(s)
      Middleton SJ, Kneller EM, Chen S, Ogiwara I, Yamakawa K, McHugh TJ.
    • Organizer
      第42回日本神経科学大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Roles of the C-terminal domain in cell surface expression of mGluR62019

    • Author(s)
      Akagi T, Dilip R, Shimohata A, Ishii T, Gangi M, Maruyama T, Ogiwara I, Kaneda M.
    • Organizer
      第42回日本神経科学大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 遺伝子変異マウスを用いたSCN2A遺伝子関連てんかんの発症機序解明2019

    • Author(s)
      荻原 郁夫
    • Organizer
      第7回日本医科大学包括てんかん診療ミーティング(NMS-ENM)学術集会
    • Related Report
      2019 Research-status Report
  • [Remarks] PRESS RELEASE - 名古屋市立大学

    • URL

      https://www.nagoya-cu.ac.jp/media/20200525.pdf

    • Related Report
      2020 Research-status Report
  • [Remarks] てんかん発症の新たな神経回路を発見

    • URL

      https://www.riken.jp/press/2019/20190516_1/

    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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