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クロマチン構造変換モニタリングシステムの開発

Research Project

Project/Area Number 16659098
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field Experimental pathology
Research InstitutionHokkaido University

Principal Investigator

田中 伸哉  北海道大学, 大学院・医学研究科, 助教授 (70261287)

Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2005: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2004: ¥2,800,000 (Direct Cost: ¥2,800,000)
Keywordsクロマチンリモデリング / SYT-SSX / p21 / senescence / ヒストン / HP1 / FRET
Research Abstract

【目的】
本研究はクロマチンリモデリングに対する視覚的なモニター系の開発を試みるものである。具体的には、我々が見出した滑膜肉腫細胞の原因遺伝子SYT-SSXとSWI/SNF型クロマチンリモデリング因子hBRMとの結合(Nagai,et al.PNAS,2001)に基づき系の確立を試みる。
【方法と結果】
(i)予備実験として、SYT-SSXが原因であるHuman Synovial sarcoma細胞株SYO-1においてFRETプローブが機能することを確認した。SYO-1細胞にRac活性のモニタリングプローブを導入し、HGFで刺激することで、効率にFRET(蛍光共鳴エネルギー移行)反応が誘導されることを確認した。(ii)本研究においてはSYT-SSXとhBRMが結合することに基づいて、CFP-SYT-SSXとYFP-hBRM(140-180AA)を共発現させて、2分子FRETの検出を試みたが、ノイズが多く有意な差は得られなかった。現在、SYT-SSXの構造変化に基づく、2分子FRETのプローブを作成中であり、現在有意なシグナルの検出を試みている。(iii)また、本研究においてはSYT-SSXのクロマチンリモデリング機能を解析する過程において、SYT-SSXは細胞に導入するとp21の発現を誘導しsenescenceを見出した(Tsuda, M.,et al.,Oncogene,2005)。さらにこの現象はp53非依存性であり、Sp-1依存性であることが判明した。SYT-SSXはhBRMを介してクロマチンリモデリングを誘導するので、以上の結果を利用して、SYT-SSXまたはhBRMとSp-1との2分子でのFRETプローブの開発を検討する。

Report

(2 results)
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (16 results)

All 2006 2005 2004

All Journal Article (16 results)

  • [Journal Article] Elmo1 inhibits the ubiquitylation of Dock180 recruited onto plasma membrane2006

    • Author(s)
      Makino Y., et al.
    • Journal Title

      J.Cell Sci. 119

      Pages: 923-932

    • Related Report
      2005 Annual Research Report
  • [Journal Article] IGF2 is critical for tumorigenesis by synovial sarcoma oncoprotein SYT-SSX1.2006

    • Author(s)
      Sun, Y., et al.
    • Journal Title

      Oncogene 25

      Pages: 1042-1052

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Azathioprine suppresses ERM-dependent T cell-APC conjugation through inhibition of Vav guanosine exchange activity on Rac proteins2006

    • Author(s)
      Poppe, D., et al.
    • Journal Title

      J.Immunol. 176

      Pages: 640-651

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Involvement of adaptor protein Crk in malignant feature of human ovarian cancer cell line MCAS2006

    • Author(s)
      Linghu, H., et al.
    • Journal Title

      Oncogene Feb.20(E-pub)(印刷中)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Human synovial sarcoma chimeric oncogene product SYT-SSX1 induces premature senescence2005

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

      Oncogene 55

      Pages: 7984-7990

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Identification of FEZ1 as a protein that interacts with JC virus agnoprotein and microtubules : role of agnoprotein-induced dissociation of FEZ1 from microtubules in viral propagation.2005

    • Author(s)
      Suzuki, T., et al.
    • Journal Title

      J.Biol.Chem. 280

      Pages: 24948-24956

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Dissociation of heterochromatin protein 1 from lamin B receptor induced by human polypmavirus agnoprotein : role in nuclear egress of viral particles.2005

    • Author(s)
      Okada, Y., et al.
    • Journal Title

      EMBO Rrep 6

      Pages: 452-457

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Establishment of an immunoscreening system using recombinant VP1 protein for the isolation of a monoclonal antibody aht blocks JC virus infection2005

    • Author(s)
      Henmi, C., et al.
    • Journal Title

      Biochem.Biophys.Res.Comm. 327

      Pages: 242-251

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The impact of molecular pathology in the diagnosis of brain tumor2005

    • Author(s)
      Tanaka, S., et al.
    • Journal Title

      Brain Tumor Pathology Suppl

      Pages: 37-40

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Transcriptional co-activator activity of SYT is negatively regulated by BRM and Brg12004

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

      Genes Cells 9

      Pages: 419-428

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Helicobacter pylori CagA induces Ras-independent morphogenetic response through SHP-2 recruitment and activation2004

    • Author(s)
      Higashi, H., et al.
    • Journal Title

      J.Biol.Chem. 279

      Pages: 17205-17216

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Nuclear entry mechanism of the human polyomavirus JC virus like particle : Role of importins and the nuclear pore complex2004

    • Author(s)
      Qu, Q., et al.
    • Journal Title

      J.Biol.Chem. 279

      Pages: 27735-27742

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Natural Killer T Cells Accelerate Atherogenesis in Mice.2004

    • Author(s)
      Nakai, Y., et al.
    • Journal Title

      Blood 104

      Pages: 2051-2059

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Inhibition of virus production in JC virus-infected cells by postinfection RNA interference2004

    • Author(s)
      Orba, Y., et al.
    • Journal Title

      J.Virol. 78

      Pages: 7270-7273

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Investigation of simian virus 40 large T antigen in 18 autopsied malignant mesothelioma patients in Japan.2004

    • Author(s)
      Muran, J., et al.
    • Journal Title

      J.Med.Virol. 74

      Pages: 668-676

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Crk associates with ERM proteins and promotes cell motility towards hyaluronic acid2004

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

      J.Biol.Chem. 279

      Pages: 46843-46850

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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