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CXCR4とgp41をダブルターゲットとした人工設計型HIV侵入阻害剤の創製研究

Research Project

Project/Area Number 16017250
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionTokyo Medical and Dental University (2005)
Kyoto University (2004)

Principal Investigator

玉村 啓和  東京医科歯科大学, 生体材料工学研究所, 教授 (80217182)

Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥12,600,000 (Direct Cost: ¥12,600,000)
Fiscal Year 2005: ¥6,300,000 (Direct Cost: ¥6,300,000)
Fiscal Year 2004: ¥6,300,000 (Direct Cost: ¥6,300,000)
KeywordsCXCR4アンタゴニスト / 抗HIV / 環状ペンタペプチド / 癌転移 / リウマチ関節炎 / ジペプチドイソスター / 低分子阻害剤 / 構造活性相関 / HIV侵入阻害剤 / 膜融合阻害剤 / D環状ペプチド / T140 / FC131 / SC34 / 非ペプチド化
Research Abstract

我々は、以前14残基のペプチドT140がT細胞指向性HIV-1(X4-HIV-1)の細胞への侵入を特異的に阻害するCXCR4アンタゴニストであることを見い出した。また、T140の必須残基をもとに環状ペンタペプチドFC131を創出し、T140に匹敵する高活性を有する低分子リード化合物であることを見い出した。さらに、T140の生体内安定型誘導体4F-benzoyl-TN14003と4F-benzoyl-TE14011の創製を行い、その際、上記の必須残基に加えて新たな活性ファルマコフォア(4-fluorobenzoyl基等のN端芳香族アシルグループ)を発見した。4F-benzoyl-TN14003と4F-benzoyl-TE14011においては、非常に強力な抗HIV活性(CXCR4上でのX4-HIV-1の侵入阻害)を示すばかりでなく、種々の癌細胞の転移とリウマチ関節炎のマウス動物モデルで顕著な活性を示した。今年度はまず、環状ペンタペプチドFC131を基にして、主鎖ペプチドのアミド結合の活性に対する必要性を評価するため、および非ペプチド性アンタゴニストを創製するため、アミド結合を(E)-アルケンジペプチドイソスターで置き換えた環状プソイドペプチドを合成し、有用な知見を得た。また、FC131の側鎖の方の最適化を検討するため、種々誘導体等を合成し、構造活性相関研究をはかった。また、4-fluorophenylalanineを導入した新たなリード化合物を得ることもできた。さらに、環状ペンタペプチドを母核としないリニアータイプの阻害剤の創製も行った。これらのシリーズにおいても有用なリードを得た。以上、FC131を基盤分子とした非ペプチド化、活性コンフォメーションの固定化、官能基の最適化を目指し、また、環状ペンタペプチドに代わるリニアータイプの低分子阻害剤の創出を行った。

Report

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

    (12 results)

All 2005 2004

All Journal Article (12 results)

  • [Journal Article] Chemokine Receptor Expression in EBV-associated Lymphoproliferation in Hu/SCID Mice : Implications for CXCL12/CXCR4 Axis in Lymphoma Generation.2005

    • Author(s)
      E.Piovan, H.Tamamura, et al.
    • Journal Title

      Blood 105

      Pages: 931-939

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Stereoselective Synthesis of [L-Arg, L/D-3-(2-naphthyl) alanine]-Type (E)-Alkene Dipeptide Isosteres and its Application to the Synthesis and Biological Evaluation of Pseudopeptide Analogs of the CXCR4 Antagonist FC1312005

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

      J.Med.Chem. 48

      Pages: 380-391

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Identification of Novel Low Molecular Weight CXCR4 Antagonists by Structural Tuning of Cyclic Tetrapeptide-scaffolds.2005

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

      J.Med.Chem. 48

      Pages: 3280-3289

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Development of Anti-HIV Agents Targeting Dynamic Supramolecular Mechanism : Entry and Fusion Inhibitors Based on CXCR4/CCR5 Antagonists and gp41-C34-Remodeling Peptides.2005

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

      Curr.HIV Res. 3(4)

      Pages: 289-301

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Structure-activity Relationship Studies on CXCR4 Antagonists Having Cyclic Pentapeptide Scaffolds.2005

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

      Org.Biomol.Chem. 3

      Pages: 4392-4394

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The Therapeutic Potential of CXCR4 Antagonists in the Treatment of HIV Infection, Cancer Metastasis and Rheumatoid Arthritis.2005

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

      Expert Opin.Ther.Targets 9(6)

      Pages: 1267-1282

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Stereoselective Synthesis of [L-Arg, L/D-3-(2-naphthyl)alanine]-Type (E)-Alkene Dipeptide Isosteres and its Application to the Synthesis and Biological Evaluation of Pseudopeptide Analogs of the CXCR4 Antagonist FC131.2005

    • Author(s)
      H.Tamamura, N.Fujii, et al.
    • Journal Title

      J.Med.Chem. 48

      Pages: 380-391

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Two Orthogonal Approaches to Overcome Multi-Drug Resistant HIV-Is : Development of Protease Inhibitors and Entry Inhibitors Based on CXCR4 Antagonists.2004

    • Author(s)
      H.Tamamura, N.Fujii
    • Journal Title

      Curr. Drug Targets-Infectious Disorders 4・2

      Pages: 103-110

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Stromal Cell-Derived Factor 1-Mediated CXCR4 Signaling in Rat and Human Cortical Neural Progenitor Cells.2004

    • Author(s)
      H.Peng, H.Tamamura, N.Fujii, et al.
    • Journal Title

      J.Neurosci. 76

      Pages: 35-50

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A Single Treatment with Microcapsules Containing a CXCR4 Antagonist Suppresses Pulmonary Metastasis of Murine Melanoma.2004

    • Author(s)
      M.Takenaga, H.Tamamura, N.Fujii, et al.
    • Journal Title

      Biochem.Biophys.Res.Commun. 320・1

      Pages: 226-232

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Identification of a CXCR4 Antagonist, a T140 Analog, as an Anti-rheumatoid Arthritis Agent.2004

    • Author(s)
      H.Tamamura, N.Fujii, et al.
    • Journal Title

      FEBS Lett. 569・1

      Pages: 99-104

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Germinal Center Dark and Light Zone Organization Is Mediated by CXCR4 and CXCR5.2004

    • Author(s)
      C.D.C.Allen, H.Tamamura, N.Fujii, J.G.Cyster, et al.
    • Journal Title

      Nat.Immunol. 5

      Pages: 943-952

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2018-03-28  

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