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Search for the candidate gene of a novel polyglutamine disease using proteomics.

Research Project

Project/Area Number 17500225
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Nerve anatomy/Neuropathology
Research InstitutionNiigata University

Principal Investigator

TOYOSHIMA Yasuko  Niigata University, Brain Research Institute, Assistant, 脳研究所, 助手 (20334675)

Co-Investigator(Kenkyū-buntansha) TAKAHASHI Hitoshi  Niigata University, Brain Research Institute, Professor, 脳研究所, 教授 (90206839)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2006: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2005: ¥2,000,000 (Direct Cost: ¥2,000,000)
KeywordsCerebellar degeneration / 1C2 / polyglutamine disease / western blotting / two dimensional electrophoresis / ポリグルタミン / 二次元電気泳動 / 脊髄小脳変性症
Research Abstract

We have found three novel polyglutamine (polyQ) disease families in last four years. In histological examination of the nervous system, each case has shown unique distribution of the polyQpositive neuronal nuclei. We revealed one case was a homozygote of SCA17, and reported the clinico-pathological findings.
After informed consent, we analyzed the protein extracted from autopsied brain. We found a case had an extra band in western blotting pattern using antibody to polyQ stretches (1C2).
To profile the expression of proteins, we used 2D fluorescence difference gel electrophoresis (2D-DIGE) system (Amersham Bioscience). We chose a patient, who had been revealed as novel polyQ disease, and six controls. The protein samples were extracted from their cerebellum, and were labeled with CyDyes (patient : Cy5, control : Cy3, and internal standard : Cy2). The samples were separated over first and second dimensions according to their charge and size, respectively. Once the samples had been separated in the second dimension, gels were scanned for Cy2, Cy3 and Cy5 fluorescence using an appropriate scanner, Typhoon TM 9400 imager (Amersham Bioscience). And image analysis was performed using DeCyder (Amersham Bioscience). As a result, we discovered a certain protein which was expressed massively in the patient's brain. Besides, from the result of 2D western blotting, the protein was the very thing that we have recognized as an extra band in the 1D western blotting with 1C2. We picked the protein spot, and sequenced the peptide fragments by MALDI-TOF mass spectrometry. We could not find the candidate gene, however, we could build up the systems to find abnormal proteins quickly.

Report

(3 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (4 results)

All 2005 Other

All Journal Article (4 results)

  • [Journal Article] Spinocerebellar ataxia type 17.2005

    • Author(s)
      Ttoyoshima Y
    • Journal Title

      Gene Reviews (web site only)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Spinocerebellar Ataxia Type 17. In : GeneReviews at GeneTests : Medical Genetics Information Resource2005

    • Author(s)
      Toyoshima Y., Onodera O., et al.
    • Journal Title

      Copyright, University of Washington, Seattle, 1997-2005. Available at http://www.genetests.org (database online)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Is motor neuron disease-inclusion dementia a forme fruste of amyotrophic lateral sclerosis with dementia? : an autopsy case further supporting the disease concept.2005

    • Author(s)
      Toyoshima Y., Tan F-T., et al.
    • Journal Title

      Neuropathology 25

      Pages: 214-219

    • NAID

      10019361083

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Takahashi H Spinocerebellar ataxia type17.

    • Author(s)
      Toyoshima Y, Onodera O, Yamada M, Tsuji S
    • Journal Title

      Gene Reviews 2005(web site only)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary

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Published: 2005-04-01   Modified: 2016-04-21  

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