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2012 Fiscal Year Annual Research Report

樹状突起形態・機能の神経活動依存的制御の分子機構

Research Project

Project/Area Number 20670002
Research InstitutionThe University of Tokyo

Principal Investigator

尾藤 晴彦  東京大学, 医学(系)研究科(研究院), 准教授 (00291964)

Project Period (FY) 2008-04-08 – 2013-03-31
Keywords脳・神経 / 発生・分化 / 遺伝子 / シグナル伝達 / 生体分子
Research Abstract

本研究課題では、神経情報を受容するシナプス近傍における樹状突起が、神経情報の統合をいかなるシグナリングのクロストークによって実践しているのか、さらに、そのような「場」を提供する樹状突起の形態が、神経情報によっていかに修飾・維持されているかについて、徹底的に解明していこうとするものである。本年度は、5年計画の最終年度で次のような成果を得た。
樹状突起形態制御因子であるCaMKIgammaのノックアウト動物の表現型解析から情動行動の異常を示唆する結果を得、その基質候補について探索を進め、CaMKIgammaによる活性化機序を明らかにした。synapse-to-soma signaling機構の解明については、SARE配列のモジュラー構造に基づき、刺激応答性をより強化した人工的プロモーターE-SAREを創出し、CREB/MEF2/SRFの協調的活性化による転写制御の重要性を証明した。一方、soma-to-synapse signaling機構については、細胞体で翻訳されたArc遺伝子産物が強化されたしなぷすを避け、弱いシナプスにおけるグルタミン酸伝達の抑制に寄与することにより、シナプス間の伝達効率の強弱比を長期的に維持する役割を持つことを解明した。また樹状突起等におけるCaMK動態を可視化する新規dual FRET 法(dFOMA法)を考案した。
上記の成果の一部は、Okuno et al.としてCell誌に掲載し、またFujii et alとしてCell Reports誌に掲載確定している。

Current Status of Research Progress
Reason

24年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

24年度が最終年度であるため、記入しない。

  • Research Products

    (31 results)

All 2013 2012 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (21 results) (of which Invited: 10 results) Book (2 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Nonlinear Decoding and Asymmetric Representation of Neuronal Input Information by CaMKIIα and Calcineurin.2013

    • Author(s)
      Fujii H et al.
    • Journal Title

      Cell Reports

      Volume: 3 Pages: 未定

    • DOI

      10.1016/j.celrep.2013.03.033

    • Peer Reviewed
  • [Journal Article] The Immediate Early Gene Arc/Arg3.1 Is a Postsynaptic Mediator of Activity-Dependent Synapse Elimination in the Developing Cerebellum2013

    • Author(s)
      Mikuni T. et al.
    • Journal Title

      Neuron

      Volume: 未定 Pages: 未定

    • DOI

      not determined

    • Peer Reviewed
  • [Journal Article] Inverse synaptic tagging of inactive synapses via dynamic interaction of Arc/Arg3.1 with CaMKIIβ.2012

    • Author(s)
      Okuno H et al.
    • Journal Title

      Cell

      Volume: 149 Pages: 886-898

    • DOI

      10.1016/j.cell.2012.02.062

    • Peer Reviewed
  • [Journal Article] Visualization of the cortical projection neurons by retrograde TET-OFF lentiviral vector.2012

    • Author(s)
      Watakabe A et al.
    • Journal Title

      PLoS One

      Volume: 7 Pages: e46157

    • DOI

      10.1371/journal.pone.0046157

    • Peer Reviewed
  • [Journal Article] Executive Function Deficits and Low Social Dominance in Mice Exposed to a Low Dose of Dioxin in utero and via lactation.2012

    • Author(s)
      Endo T et al.
    • Journal Title

      PLoS One

      Volume: 7 Pages: e50741

    • DOI

      10.1371/journal.pone.0050741

    • Peer Reviewed
  • [Journal Article] Deciphering the molecular rules governing synaptic targeting of the memory related protein Arc.2012

    • Author(s)
      Kim R et al.
    • Journal Title

      Commun. Integr. Biol.

      Volume: 5 Pages: 496-498

    • DOI

      10.1016/j.cell.2012.02.062

    • Peer Reviewed
  • [Presentation] Activity-dependent modulation of receptor dynamics at excitatory synapses.2013

    • Author(s)
      Haruhiko Bito
    • Organizer
      14th International Membrane Research Forum.
    • Place of Presentation
      iCEMS, Kyoto
    • Year and Date
      20130315-20130317
    • Invited
  • [Presentation] The role of Arc in inverse tagging of inactive synapses.2013

    • Author(s)
      Haruhiko Bito
    • Organizer
      25th Winter Conference on Neural Plasticity
    • Place of Presentation
      Curacao, Netherlands
    • Year and Date
      20130210-20130215
    • Invited
  • [Presentation] Nonlinear Decoding and Asymmetric Representation of Neuronal Input Information by CaMKIIα and Calcineurin.2013

    • Author(s)
      Fujii H et al.
    • Organizer
      10th International Conference on Protein Phosphatase
    • Place of Presentation
      国立がんセンター研究所(東京)
    • Year and Date
      20130207-20130209
    • Invited
  • [Presentation] New roles of CaMKII in information storage and processing.2013

    • Author(s)
      Haruhiko Bito
    • Organizer
      46th Winter Conference on Brain Research
    • Place of Presentation
      Breckenridge, Colorado, USA
    • Year and Date
      20130126-20130131
    • Invited
  • [Presentation] Biochemical characterization of Ca2+/calmodulin-dependent protein kinase I gamma as an effective regulator for dendritogenesis in developing cortical neurons.2012

    • Author(s)
      Suzuki K et al
    • Organizer
      第85回日本生化学会大会
    • Place of Presentation
      福岡国際会議場・マリンメッセ福岡(福岡市)
    • Year and Date
      20121214-20121216
  • [Presentation] Inverse synaptic tagging: a new mechanism for late-phase synaptic plasticity,2012

    • Author(s)
      Okuno H et al.
    • Organizer
      第35回日本分子生物年会
    • Place of Presentation
      福岡国際会議場・マリンメッセ福岡(福岡市)
    • Year and Date
      20121211-20121214
  • [Presentation] dFOMA (dual FRET with Optical MAnipulation)イメージングを用いたCaMKIIαとCalcineurinによる神経入力情報の非線形的デコーディング,2012

    • Author(s)
      Fujii H et al.
    • Organizer
      第35回日本分子生物年会
    • Place of Presentation
      福岡国際会議場・マリンメッセ福岡(福岡市)
    • Year and Date
      20121211-20121214
  • [Presentation] Differential roles for CaM kinases in mediating excitation-morphogenesis coupling during formation and maturation of neuronal circuits.2012

    • Author(s)
      Sayaka Takemoto-Kimura et al.
    • Organizer
      International Conference of Physiological Sciences
    • Place of Presentation
      Suzhou International Expo Center, Suzhou, China
    • Year and Date
      20121101-20121104
    • Invited
  • [Presentation] Non-linear decoding and representation of neuronal input information by CaMKIIα and calcineurin.2012

    • Author(s)
      Fujii H et al.
    • Organizer
      42th Annual Meeting of the Society for Neuroscience
    • Place of Presentation
      New Orleans, Louisiana, USA
    • Year and Date
      20121013-20121017
  • [Presentation] Visualization of an active ensemble of cortical neurons in vivo using a novel activity-dependent promoter E-SARE.2012

    • Author(s)
      Kawashima T et al.
    • Organizer
      42th Annual Meeting of the Society for Neuroscience
    • Place of Presentation
      New Orleans, Louisiana, USA
    • Year and Date
      20121013-20121017
  • [Presentation] Resolving dendritic CaMKK-CaMKIV signal transduction during synapse-to-nucleus signaling.2012

    • Author(s)
      Inoue M et al.
    • Organizer
      42th Annual Meeting of the Society for Neuroscience
    • Place of Presentation
      New Orleans, Louisiana, USA
    • Year and Date
      20121013-20121017
  • [Presentation] Possible involvement of the Ca2+-dependent gene Arc in activity dependent synapse elimination in the cerebellum.2012

    • Author(s)
      Mikuni T et al.
    • Organizer
      42th Annual Meeting of the Society for Neuroscience
    • Place of Presentation
      New Orleans, Louisiana, USA
    • Year and Date
      20121013-20121017
  • [Presentation] CREB, Arc and Long-Term Memory Formation2012

    • Author(s)
      Nonaka M et al.
    • Organizer
      22nd Neuropharmacology Conference 2012
    • Place of Presentation
      Hilton Riverside, New Orleans, Louisiana, USA
    • Year and Date
      20121010-20121011
  • [Presentation] Nuclear Translocation of CRTC1 Triggers Neuronal Activity- Dependent Gene Ex pression and Enhances Long-Term Memory.2012

    • Author(s)
      Nonaka M et al.
    • Organizer
      11th Biennial Meeting of the Asian Pacific Society for Neurochemistry
    • Place of Presentation
      神戸国際会議場(神戸)
    • Year and Date
      20120930-20121002
  • [Presentation] Novel functions of Ca2+-dependent phosphorylation cascades in neuritogenesis and emotional behavior.2012

    • Author(s)
      Takemoto-Kimura S et al.
    • Organizer
      第35回神経科学学会大会(Neuro2012)
    • Place of Presentation
      名古屋国際会議場(名古屋市)
    • Year and Date
      20120918-20120921
    • Invited
  • [Presentation] AMPA receptor dynamics quantified using a fluorescence activation-coupled protein labeling (FAPL) method.2012

    • Author(s)
      Ishii Y et al.
    • Organizer
      第35回神経科学学会大会(Neuro2012)
    • Place of Presentation
      名古屋国際会議場(名古屋市)
    • Year and Date
      20120918-20120921
  • [Presentation] Identifying an active ensemble of cortical neurons in vivo using an enhanced synaptic activity-responsive element (E-SARE).2012

    • Author(s)
      Kawashima T et al.
    • Organizer
      第35回神経科学学会大会(Neuro2012)
    • Place of Presentation
      名古屋国際会議場(名古屋市)
    • Year and Date
      20120918-20120921
  • [Presentation] CREB, Arc and long-term memory.2012

    • Author(s)
      Haruhiko Bito
    • Organizer
      7th International Conference on Neurons and Brain Diseases.
    • Place of Presentation
      McGill University, Montreal, Canada
    • Year and Date
      20120626-20120628
    • Invited
  • [Presentation] Deciphering the signaling from the synapses to the nucleus and from the nucleus back to the synapses.

    • Author(s)
      Haruhiko Bito
    • Organizer
      HHMI Janelia Farm Research Campus Seminar.
    • Place of Presentation
      HHMI Janelia Farm Research Campus, Ashburn, Virginia, USA
    • Invited
  • [Presentation] New roles of CaM kinases in plasticity and development.

    • Author(s)
      Haruhiko Bito
    • Organizer
      Center for Functional Connectomics Seminar
    • Place of Presentation
      Center for Functional Connectomics, Korean Institute for Science and Technology, Seoul, Korea
    • Invited
  • [Presentation] The role of Arc in inverse tagging of inactive synapses.

    • Author(s)
      Haruhiko Bito
    • Organizer
      Korea Advanced Institute for Science and Technology Seminar
    • Place of Presentation
      Korea Advanced Institute for Science and Technology, Daejeon, Korea
    • Invited
  • [Book] 活動依存的な遺伝子発現誘導・突起伸展機構 in ブレインサイエンス・レビュー2013.2013

    • Author(s)
      尾藤晴彦
    • Total Pages
      155~168
    • Publisher
      クバプロ
  • [Book] 光技術を用いた神経回路機能の解読と操作 in 実験医学増刊vol . 30 第13号 精神・神経疾患ー発症基盤・病態生理を担う分子カスケードから臨床応用までー (櫻井武,澤明編)2012

    • Author(s)
      尾藤晴彦
    • Total Pages
      pp.100-106
    • Publisher
      羊土社
  • [Patent(Industrial Property Rights)] 神経活動依存的プロモータ活性を有するDNA、及びこれを含むベクター2012

    • Inventor(s)
      尾藤 晴彦、奥野 浩行、川島 尚之
    • Industrial Property Rights Holder
      尾藤 晴彦、奥野 浩行、川島 尚之
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      特願2012-205892
    • Filing Date
      2012-09-19
  • [Patent(Industrial Property Rights)] 画像処理装置及び プログラム2012

    • Inventor(s)
      尾藤 晴彦、川島 尚之
    • Industrial Property Rights Holder
      尾藤 晴彦、川島 尚之
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      特願2012-170548
    • Filing Date
      2012-07-31

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Published: 2014-07-24  

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