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プロテアソーム蛋白分解系を標的としたストレス誘導性薬剤耐性の克服

Research Project

Project/Area Number 13218024
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionThe University of Tokyo

Principal Investigator

冨田 章弘  東京大学, 分子細胞生物学研究所, 助教授 (40251483)

Project Period (FY) 2001 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥35,300,000 (Direct Cost: ¥35,300,000)
Fiscal Year 2004: ¥9,000,000 (Direct Cost: ¥9,000,000)
Fiscal Year 2003: ¥9,100,000 (Direct Cost: ¥9,100,000)
Fiscal Year 2002: ¥9,000,000 (Direct Cost: ¥9,000,000)
Fiscal Year 2001: ¥8,200,000 (Direct Cost: ¥8,200,000)
Keywordsプロテアソーム / トポイソメラーゼ / 抗がん剤耐性 / 固形がん / グルコース飢餓 / Jab1 / CSN5 / Cullin / Unfolded Protein Response / ユビキチン / カンプトテシン / 低酸素
Research Abstract

本研究は、グルコース飢餓や低酸素など固形がんで特徴的に認められるストレスによって誘導される薬剤耐性を中心に、抗がん剤耐性・感受性に関るプロテアソーム蛋白分解系の制御機構を明らかにし、その分子標的としての可能性を検討することを主目的として進めてきた。本年度は、プロテアソーム蛋白分解系の関連することを見出しているトポイソメラーゼ(トポ)IとトポIIαの分解制御機構についての研究、またこうした研究を基盤として新たにトポIIαの分解に導くストレス応答-unfolded protein response-の制がんの標的としての可能性についての検討を鋭意すすめた。その結果、トポイソメラーゼ(トポ)Iの分解を制御する因子としてCullin (Cul) 3の同定に成功し、Cul3がカンプトテシン類の感受性を制御する因子であることを明らかになった。一方、グルコース飢餓や低酸素などのストレス下で起こるトポIIαの分解機構については、分解制御ドメインGRDD (Glucose-Regulated Destruction Domain)を介したJab1/CSN5による制御を見出し、論文発表した。またGRP78の誘導を特徴とするストレス応答unfolded protein response (UPR)を抑制する化合物versipelostatinについて検討し、グルコース飢餓環境下で選択的に強い細胞毒性を示すことを明らかにした。この環境選択的な細胞毒性は、UPRの抑制とよく一致しており、UPRの抑制が新しいがんの治療戦略となる可能性が示唆された。

Report

(4 results)
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (15 results)

All 2004 Other

All Journal Article (4 results) Publications (11 results)

  • [Journal Article] Blockade of survival response to glucose deprivation for selective killing of tumor cells.2004

    • Author(s)
      Park, H-R., et al.
    • Journal Title

      J.Natl.Cancer Inst. 96

      Pages: 1300-1310

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Interaction between Glucose-regulated Destruction Domain of DNA Topoisomerase IIα and MPN Domain of Jab1/CSN5.2004

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

      J.Biol.Chem. 279

      Pages: 31296-31303

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Alteration in copy numbers of genes as a mechanism for acquired drug resistance.2004

    • Author(s)
      Yasui, K., et al.
    • Journal Title

      Cancer Res. 64

      Pages: 1403-1410

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Cullin 3 promotes proteasomal degradation of the topoisomerase I-DNA covalent complex.2004

    • Author(s)
      Zhang, HF., et al.
    • Journal Title

      Cancer Res. 64

      Pages: 1114-1121

    • Related Report
      2004 Annual Research Report
  • [Publications] Tsuruo, T.et al.: "Molecular targeting therapy of cancer : drug resistance, apoptosis and survival signal."Cancer Sci.. 94. 15-21 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Zhang, HF., et al.: "Cullin 3 promotes proteasomal degradation of the topoisomerase I-DNA covalent complex."Cancer Res.. 64. 1114-1121 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Yasui, K., et al.: "Alteration in copy numbers of genes as a mechanism for acquired drug resistance."Cancer Res.. 64. 1403-1410 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Ogiso, Y.et al.: "Nuclear localization of proteasomes participates in stress-inducible resistance of solid tumor cells to topoisomerase II-directed drugs"Cancer Res.. 62. 5008-5012 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Horie, K.et al.: "SUMO-1 conjugation to intact DNA topoisomerase I amplifies cleavable complex formation induced by camptothecin"Oncogene. 21. 7913-7922 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Kaneta Y.et al.: "Prediction of sensitivity to STI571 among chronic myeloid leukemia patients by genome-wide cDNA microarray analysis"Jpn.J.Cancer Res.. 93. 849-856 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Tsuruo, T.et al.: "Molecular targeting therapy of cancer : drug resistance, apoptosis and survival signal"Cancer Sci.. 94. 15-21 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Tomida, A.: "Drug resistance pathways as targets"Anti-CANCER DRUG DEVELOPMENT (B.A.Baguley and D.J. Kerr (ed.), Academic Press). 77-90 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Suzuki, H.: "Dephosphorylated hypoxia-inducible factor 1α as a mediator of p53-dependent apoptosis during hypoxia"Oncogene. 20. 5779-5788 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Kurosawa, K.: "Reversal of multidrug resistance by novel nitrophenyl pyrones, SNF4435C and D."Jpn. J. Cancer Res.. 92. 1235-1241 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Sakai, J.: "Two taxoids from Taxus Cuspidata as modulators of multidrug resistant tumor cells"HETEROCYCLES. 54. 999-1009 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2018-03-28  

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