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脳特異的Sept7欠損マウスを用いた神経系セプチンスカフォールドの機能解析

Research Project

Project/Area Number 18022020
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionKyoto University

Principal Investigator

木下 専  Kyoto University, 医学研究科, 講師 (30273460)

Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥8,400,000 (Direct Cost: ¥8,400,000)
Fiscal Year 2007: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 2006: ¥4,300,000 (Direct Cost: ¥4,300,000)
Keywords細胞骨格 / 膜骨格 / 拡散障壁 / コンディショナルノックアウト / バーグマングリア / プルキンエ細胞 / 小脳 / グリア細胞 / シナプス
Research Abstract

マウス小脳Purkinje細胞樹状突起棘のくびれ部分(spine neck)、およびこれを取り巻くBergmann glial endfeetなど、細胞膜陥凹部直下に高度に集積するセプチン・クラスターを発見し、免疫電顕3次元再構築法で解析した(J Neurosci投稿中)。一方、大脳皮質初代培養ニューロンにおいて樹状突起棘のくびれ〜起始部に集積するセプチン・クラスターをRNAiで枯渇させると不安定なspineが多発することを示した(Curr Biol2007)。さらに、細胞膜直下のセプチン系が開口放出装置であるtSNAREsの安定化に寄与する拡散障壁であることをFRAP法(J Neurosci投稿中)およびSept4欠損マウスで示した(Neuron 2007)。しかし、Sept4欠損マウスの小脳異常は軽度であったため(Mol Cell Biol改訂中)、重複遺伝子の存在しないSept7遺伝子に着目してPurkinje細胞およびBergmann gliaにおける条件欠損(cK0)マウスの作製を行った。同研究班への公募参加が引き続き認められたので、H20-21年度中に行動・組織構築・微細形態・生化学的解析を完了する。

Report

(2 results)
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (8 results)

All 2008 2007

All Journal Article (6 results) (of which Peer Reviewed: 3 results) Presentation (1 results) Book (1 results)

  • [Journal Article] Sept4, a component of presynaptic scaffold and Lewy bodies, is required for the suppression of alpha-2007

    • Author(s)
      Ihara, Kinoshita, et. al.
    • Journal Title

      Neuron 53

      Pages: 519-533

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Connecting the dots between septins and the DNA damage checkpoint.2007

    • Author(s)
      Kinoshita, Takeda
    • Journal Title

      Cell 130

      Pages: 777-779

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Role of Septin cytoskeleton in spine morphogenesis and dendrite development in neurons.2007

    • Author(s)
      Tada, Kinoshita, Sheng, et. al.
    • Journal Title

      Current Biology 17

      Pages: 1752-1758

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Isoform-specific phosphorylation of Sept5/CDCrel-1 by cyclin-dependent kinase 5 inhibits the interaction with syntaxin-1.2007

    • Author(s)
      Taniguchi M, Kinoshita M, Hisanaga S, et. al.
    • Journal Title

      Journal of Biological Chemistry 282

      Pages: 7869-7876

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Sept4, a component of presynaptic scaffold and Lewy bodies, is required for the suppression of □-synuclein neurotoxicity.2007

    • Author(s)
      Ihara M, Kinoshita M, et. al.
    • Journal Title

      Neuron 53

      Pages: 519-533

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Role of Septin cytoskeleton in spine morphogenesis and dendrite development in neurons.2007

    • Author(s)
      Tada T, Kinoshita M, Sheng, et. al.,
    • Journal Title

      Current Biology 17

      Pages: 1752-1758

    • Related Report
      2006 Annual Research Report
  • [Presentation] Sept4, a component of presynaptic scaffold and Lewy bodies, is required for the suppression of alpha-2007

    • Author(s)
      Kinoshita M
    • Organizer
      EMBO Workshop/The 2nd International Septin Workshop.
    • Place of Presentation
      Ascona, Switzerland
    • Year and Date
      2007-05-07
    • Related Report
      2007 Annual Research Report
  • [Book] The Septins (eds. S.E.H. Russell, J. Pringle, and P. Hall)2008

    • Author(s)
      Kinoshita M(他11名)
    • Publisher
      John Wiley & Sons
    • Related Report
      2007 Annual Research Report

URL: 

Published: 2006-04-01   Modified: 2018-03-28  

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