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抗サイレンシング効果を有する小分子化合物の同定と作用機序解明

Research Project

Project/Area Number 17659292
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field Hematology
Research InstitutionKyoto University

Principal Investigator

松岡 雅雄  京都大学, ウイルス研究所, 教授 (10244138)

Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2006: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2005: ¥2,100,000 (Direct Cost: ¥2,100,000)
Keywordsメチル化 / 発がん / エピジェネティクス / DNAメチル化 / サイレンシング / 転写抑制 / 抗がん剤
Research Abstract

1)抗サイレンシング機序の解明:
我々が同定したハロゲン化チミジン化合物の抗サイレンシング機序を解析し、この化合物がDNAメチル化には影響を与えず、ヒストン修飾を変化させることを明らかにした。
2)ハロゲン化チミジン化合物と他の抗サイレンシング効果を有する小分子化合物との併用効果:
ハロゲン化チミジン化合物をDNAメチル化阻害剤である5-aza-dCと併用すると強い相乗効果が認められた。類似の構造を有する化合物であるが、作用機序の違いにより相乗効果が認められるものと推測された。
3)生体内における抗サイレンシング効果の解析:
p16遺伝子、ウイルス抗原の発現がDNAメチル化で抑制されていることが確認されているATL株(ED,ATL-43T)を免疫不全マウスに接種し、腫瘤形成の後に同定した化合物(ハロゲン化ヌクレオシドを含む)を投与し抗腫瘍効果、抗サイレンシング効果を解析したが、ATL細胞ではp16,tax遺伝子の発現回復は認められなかった。

Report

(2 results)
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (12 results)

All 2006 2005

All Journal Article (11 results) Book (1 results)

  • [Journal Article] HTLV-I basic leucine zipper factor gene mRNA supports proliferation of adult T cell leukemia cells.2006

    • Author(s)
      Satou Y.
    • Journal Title

      Proc.Natl.Acad.Sci.USA. 103

      Pages: 720-725

    • Related Report
      2006 Annual Research Report
  • [Journal Article] De Novo Human T-Cell Leukemia Virus Type 1 Infection of Human Lymphocytes in NOD-SCID, Common γ-Chain Knockout Mice.2006

    • Author(s)
      Miyazato P.
    • Journal Title

      J Virol. 80

      Pages: 10683-10691

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Donor-Derived T-cell leukemia after Bone Marrow Transplantation.2006

    • Author(s)
      Tamaki H.
    • Journal Title

      N Engl J Med. 354(16)

      Pages: 1758-1759

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Loss of interleukin-2-dependency in HTLV-I-infected T-cells on gene silencing of thioredoxin-binding protein-2.2006

    • Author(s)
      Ahsan MK.
    • Journal Title

      Oncogene 25

      Pages: 2181-2191

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Sea Urchin Arylsulfatase Insulator Exerts its Anti-silencing Effect without Interacting with the Nuclear Matrix.2006

    • Author(s)
      Hino S.
    • Journal Title

      J.Mol.Biol. 357

      Pages: 18-27

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Ars Insulator Identified in Sea Urchin Possesses an Activity to Ensure the Transgene Expression in Mouse Cells.2006

    • Author(s)
      Tajima S.
    • Journal Title

      J Biochem 139(4)

      Pages: 705-714

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Silencing of human T-cell leukemia virus type I gene transcription by epigenetic mechanisms.2005

    • Author(s)
      Taniguchi Y.
    • Journal Title

      Retrovirology 2

      Pages: 64-64

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Preferential selection of human T-cell leukemia virus type I (HTLV-I) provirus integration sites in leukemic versus carrier states.2005

    • Author(s)
      Doi K.
    • Journal Title

      Blood 106

      Pages: 1048-1053

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Halogenated thymidine analogs restore the expression of silenced genes without demethylation.2005

    • Author(s)
      Fan J.
    • Journal Title

      Cancer Res 65

      Pages: 6927-6933

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Human T-cell leukemia virus type I (HTLV-I) infection and the onset of adult T-cell leukemia (ATL).2005

    • Author(s)
      Matsuoka M.
    • Journal Title

      Retrovirology 2

      Pages: 27-27

    • NAID

      120004754360

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Human T-cell leukemia virus type I at age 25:a progress report.2005

    • Author(s)
      Matsuoka M.
    • Journal Title

      Cancer Res 65

      Pages: 4467-4470

    • Related Report
      2005 Annual Research Report
  • [Book] The Lymphomas SECOND EDITION.2006

    • Author(s)
      Matsuoka M.
    • Total Pages
      12
    • Related Report
      2006 Annual Research Report

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

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