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2010 Fiscal Year Annual Research Report

脳神経活動解析のための新規光計測技術の開発

Research Project

Project/Area Number 20656064
Research InstitutionWaseda University

Principal Investigator

尾崎 美和子  早稲田大学, 総合研究機構, 教授 (30291058)

Keywordsニューレグリン / 電極の形状 / 電極間比較 / プローブの開発 / アダプター / 温度感受性色素 / 分極誘導 / デバイス
Research Abstract

これまでの我々の研究から、統合失調症関連遺伝子ニューレグリン(NRG)は50Hz付近から100Hz間の周波数刺激により膜貫通ドメインのすぐN末側で蛋白切断を受け細胞外に切り出されることが解っている。実際に、統合失調症患者の血液サンプルを用い、分泌型NRGの血中量と遺伝子多型を解析することにより、統合失調症患者では、その発病と改善に分泌型NRGの量が関与していることを明らかにした。また統合失調症患者の分泌型NRG量の変動が発病と関連があること、発病の際、前頭前野や聴覚野における50~80Hz付近の神経活動消失や乱れが観察されることから光計測系で分泌量と神経活動を同時計測し、その結果を脳刺激にフィードバックする仕組みを構築しようとしてきた。
そのため必要な蛍光物質を様々な角度から合成、スクリーニングを行った結果、脳機能(神経活動)を高感度で検出できる温度感受性色素を得ることができた。神経活動変化に伴う細胞内カルシウム濃度変化が発熱・吸熱反応を引き起こし、その変化を蛍光強度変化計測することにより検出するシステムである。一方、NRGの蛋白分断と分泌を追跡するための新規プローブの合成にも成功し、両者を同時観測可能なところまできた。また、脳深部の計測を可能にするため、バンドル化した光ファイバー表面に色素を塗布することにより脳深部に於ける光計測をミリセカンドの時間分解能、20~50マイクロメータの空間分解能で計測できるシステムとし、同時に光刺激も可能となった。実際に脳スライス、動物個体に応用することによりそのプロトタイプの評価を行っている。

  • Research Products

    (21 results)

All 2011 2010

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (13 results) Patent(Industrial Property Rights) (1 results) (of which Overseas: 1 results)

  • [Journal Article] Transgenic mice overexpressing typel-neruegulinlβ display hyper locomotor activity reduced context dependent fear-learning and social interaction : implication for schizophrenia2011

    • Author(s)
      T Kato, Y Abe, H Sotoyama, A Kakita, R Kominami, S Hirokawa, M Ozaki, H Takahashi, H Nawa
    • Journal Title

      Molecular Psychiatry

      Volume: 16(3) Pages: 307-320

    • Peer Reviewed
  • [Journal Article] Fluorescent Imaging Technique Suppressing Background Signals by using Quencher-conjugated Peptide2011

    • Author(s)
      Satoshi Arai, Yoon Su-In, Atsushi Murata, Shinji Takeoka, Yixin Lu, Xiaoyu Wu, Miwako Ozaki
    • Journal Title

      Biochem.Biophys.Res.Commun

      Volume: 404 Pages: 211-216

    • Peer Reviewed
  • [Journal Article] Phenotypic Characterization of Transgenic Mice Overexpressing Neuregulin-12010

    • Author(s)
      T.Kato, Y Abe, M.Mizuno, K, Araki, N, Takei, F.Liang, M.Ozaki, H.Nawa
    • Journal Title

      PLoS ONE

      Volume: 5(12)e14185 Pages: 1-12

    • Peer Reviewed
  • [Journal Article] Construction of a "Turn-on" Fluorescent Probe System for His-tagged Proteins2010

    • Author(s)
      Atsushi Murata, Satoshi Arai, Yoon Su-In, Masao Takabayashi, Miwako Ozaki, Shinji Takeoka
    • Journal Title

      Bioorganic & Medicinal Chemistry Letters

      Volume: 20(23) Pages: 6905-6908

    • Peer Reviewed
  • [Journal Article] Repeated administration of methamphetamine blocked cholecystokinin-octapeptide injection-induced c-fos mRNA expression without change in capsaicin-induced junD mRNA expression in rat cerebellum2010

    • Author(s)
      Mitsuko Hamamura, Miwako Ozaki, Yasuyuki Fukumaki
    • Journal Title

      J.Neural Transmission

      Volume: 117 Pages: 1041-1053

    • Peer Reviewed
  • [Journal Article] Measurement and comparison of serum neuregulin-1 immunoreactivity in control subjects and patients with schizophrenia ; An influence of its genetic polymorphism2010

    • Author(s)
      Masako Shibuya, Emiko Komi, Ran Wang, Taisuke Kato, Yuichiro Watanabe, Miwako Sakai, Miwako Ozaki, Toshiyuki Someya, Hiroyuki Nawa
    • Journal Title

      J.Neural Transmission

      Volume: 117 Pages: 887-895

    • Peer Reviewed
  • [Journal Article] In silico analysis of neuregulin-1 evolution in vertebrates2010

    • Author(s)
      Chihfong Chou, Miwako Ozaki
    • Journal Title

      Biosci.Rep

      Volume: 30(4) Pages: 267-275

    • Peer Reviewed
  • [Presentation] 精神疾患診断と治療に向けての医療機器開発2011

    • Author(s)
      尾崎美和子
    • Organizer
      奈良女子大学の理学部化学科・機能化学講座セミナー
    • Place of Presentation
      奈良
    • Year and Date
      2011-01-25
  • [Presentation] Fluorescent "turn-on" system utilizing the quencher conjugated peptide toward specific protein labeling in live cells2010

    • Author(s)
      Yoon, S.I.Arai, S.Murata, A.Takabayashi, M.Wu, X.Lu, Y.Takeoka, S.Ozaki, M.
    • Organizer
      BMB 2010 meeting (Biochemical molecular biology)
    • Place of Presentation
      Kobe
    • Year and Date
      20101207-20101210
  • [Presentation] Optical Imaging Method : from Molecule to Mind2010

    • Author(s)
      Miwako Ozaki
    • Organizer
      DECADE OF THE MIND VI
    • Place of Presentation
      Singapore
    • Year and Date
      20101018-20101020
  • [Presentation] Fluorescent "turn-on" system utilizing the quencher-conjugated peptide toward specific protein labeling in live cells2010

    • Author(s)
      Yoon, S.I.Arai, S.Murata, A.Takabayashi, M.Wu, X.Lu, Y.Takeoka, S.Ozaki, M.
    • Organizer
      Society for Neurochemistry (APSN)
    • Place of Presentation
      Phuket
    • Year and Date
      20101017-20101020
  • [Presentation] Construction of off/on fluorescent probe targeting His-tagged protein2010

    • Author(s)
      Atsushi Murata, Satoshi Arai, Yoon Su-In, Masao Takabayashi, Miwako Ozaki, Shinji Takeoka
    • Organizer
      World Molecular Imaging Congress
    • Place of Presentation
      Kyoto
    • Year and Date
      20100907-20100910
  • [Presentation] 精神疾患診断と治療に向けての医療機器開発~シンガポールとの連携~2010

    • Author(s)
      Miwako Ozaki
    • Organizer
      神戸産学交流ワークショップ
    • Place of Presentation
      神戸
    • Year and Date
      2010-11-05
  • [Presentation] Novel approaches for diagnosis and therapy of brain dysfunctions by using visualization- techniques2010

    • Author(s)
      Miwako Ozaki
    • Organizer
      Singapore General Hospital Invited Seminar
    • Place of Presentation
      Singapore
    • Year and Date
      2010-10-29
  • [Presentation] Proteolytic Cleavage Mechanism of NRG1 through Protein Kinase C Signaling Pathway2010

    • Author(s)
      Su-In Yoon, Chih-Fong Chou, Miwako Ozaki
    • Organizer
      DECADE OF THE MIND VI
    • Place of Presentation
      Singapore
    • Year and Date
      2010-10-19
  • [Presentation] New Diagnoses and Treatment for Schizophrenia2010

    • Author(s)
      Miwako Ozaki
    • Organizer
      1^<st> Anniversary Symposium of WABIOS
    • Place of Presentation
      Singapore
    • Year and Date
      2010-09-05
  • [Presentation] In silico analysis of neuregulin 1 evolution in vertebrates2010

    • Author(s)
      Chih-Fong Chou, Miwako Ozaki
    • Organizer
      1^<st> Anniversary Symposium of WABIOS
    • Place of Presentation
      Singapore
    • Year and Date
      2010-09-05
  • [Presentation] Proteolytic Cleavage Mechanism of NRG1 Through PKC Activity2010

    • Author(s)
      Su-In Yoon, Chih-Fong Chou, Miwako Ozaki
    • Organizer
      1^<st> Anniversary Symposium of WABIOS
    • Place of Presentation
      Singapore
    • Year and Date
      2010-09-05
  • [Presentation] Novel approaches for the study and therapy of brain dysfunctions by using visualization- technology of biological functions and neuro-devices2010

    • Author(s)
      Miwako Ozaki
    • Organizer
      A : STAR 12R invited seminar
    • Place of Presentation
      Singapore
    • Year and Date
      2010-07-27
  • [Presentation] New techniques for application of brain diseases.2010

    • Author(s)
      Miwako Ozaki
    • Organizer
      Closed meeting by Science and Engineering Research Council
    • Place of Presentation
      Singapore
    • Year and Date
      2010-06-22
  • [Patent(Industrial Property Rights)] Selective Labeling Reagents for Target Biomacromolecule.2010

    • Inventor(s)
      武岡真司・新井敏・村田篤・尾崎美和子・Yoon, Su-In
    • Industrial Property Rights Holder
      早稲田大学
    • Industrial Property Number
      PCT/JP2010/63754
    • Filing Date
      2010-08-13
    • Overseas

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Published: 2012-07-19  

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