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耐「薬剤耐性」プロテアーゼ阻害剤(抗HIV剤)の基礎研究と開発

Research Project

Project/Area Number 15659237
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field 膠原病・アレルギー・感染症内科学
Research InstitutionKumamoto University

Principal Investigator

満屋 裕明  熊本大学, 大学院・医学薬学研究部, 教授 (20136724)

Co-Investigator(Kenkyū-buntansha) 宮川 寿一  熊本大学, 医学部附属病院, 助手 (40347000)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2004: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2003: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsHIV / 多剤耐性 / プロテアーゼ阻害剤 / Gag / X線結晶構造解析 / bix-THF / Cp-THF / 組み換えHIVクローン / bis-THF derivative
Research Abstract

本研究はHIVが耐性を発現しにくく、発現しても他剤と交差耐性を有しない新規のプロテアーゼ阻害剤(PI)の開発を進め、その基礎となるウイルス・酵素・細胞生物・薬理・結晶解析学的な研究を行うことを目的としている。P2部位にbis-THFというユニークな構造を有し、既存のPIsがプロテアーゼの活性部位の側鎖に結合するのと異なり、主要活性部位であるAsp29/Asp30の主鎖(back bone)と強固な水素結合を形成し、多剤耐性株を含むHIV〜1株に活性を発揮する新規のPI、UIC94003(Yoshimura & Mitsuya. J.Virol.76:1349-1358,2002)、UIC94003の誘導体で経口吸収能の良好なUIC94017/TMC114(Koh & Mitsuya. Antimicrob.Agents Chemother.47:3123-3129,2003)を開発、現在欧州、米国で臨床試験が進行中で、班に人体で良好な抗HIV効果を発揮する事が示されている(IIa)。また、多剤耐性臨床分離株に対しても野生株と同等の活性を有するcyclopentanyl-tetrahydrofuran(Cp-THF)という新規の構造を有するPIであるUIC02031を同定・開発中である(投稿準備中)。他方、申請者はPIに対する高度の耐性獲得にプロテアーゼでのアミノ酸置換だけでなく、Gag部分のnon-cleavage sitesでのアミノ酸置換が重要である事を明らかにしており(Gatanaga&Mitsuya.J.Biol.Chem.277:5952-5961,2002)、更にPIに対する高度耐性発現にpoly-proteinsのcleavage sites近傍のアミノ酸の繰り返し構造付加が関連していることを明らかとしている(Tamiya & Mitsuya, J.Virol.78:12030-12040,2004)。

Report

(2 results)
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (12 results)

All 2005 2004 Other

All Journal Article (6 results) Publications (6 results)

  • [Journal Article] Potent anti-R5-HIV-1 effects of a CCR5 antagonist AK602 in a novel hu-PBMC-non-obese diabetic-SCID, IL-2R γ-chain-knocked-out AIDS mouse model.2005

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

      J Virol. 79

      Pages: 2087-2096

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Spirodiketopiperazine-based CCR5 inhibitor which preserves CC-chemokine/CCR5 interactions and exerts potent activity against R5 human immuno-deficiency virus type 1 in vitro.2004

    • Author(s)
      Maeda, K., H.Mitsuya, et al.
    • Journal Title

      J Virol. 78

      Pages: 8654-8662

    • Related Report
      2004 Annual Research Report
  • [Journal Article] The current status of, and challenges in, the development of CCR 5 inhibitors as therapeutics for HIV-1 infection.2004

    • Author(s)
      Maeda, K., H.Mitsuya, et al.
    • Journal Title

      Curr.Opin.Pharmacol. 4

      Pages: 447-452

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Amino acid insertions near Gag cleavage sites restore the other wise compromised replication of human immunodeficiency virus type 1 variants resistant to protease inhibitors.2004

    • Author(s)
      Tamiya, S., H.Mitsuya, et al.
    • Journal Title

      J Virol. 78

      Pages: 12030-12040

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Attempt to reduce cytotoxicity by synthesizing the L-enantiomer of 4'-C-ethynyl-2'-deoxypurine nucleosides as antiviral agents against HIV and HBV.2004

    • Author(s)
      Kitano, K., H.Mitsuya, et al.
    • Journal Title

      Antivir.Chem.Chemother. 15

      Pages: 161-167

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Identification of aberrantly methylated genes in association with adult T-cell leukemia.2004

    • Author(s)
      Yasunaga, J., H.Mitsuya, et al.
    • Journal Title

      Cancer Res. 64

      Pages: 6002-6009

    • Related Report
      2004 Annual Research Report
  • [Publications] Koh Y., Mitsuya H.et al.: "Novel bis-tetrahydrofuranylurethane-containing nonpeptidic protease inhibitor (PI) UIC-94017 (TMC114) with potent activity against multi-PI-resistant human immunodeficiency virus in vitro."Antimicrob.Agents Chemother.. 47. 3123-3129 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tamamura H., Mitsuya H.et al.: "Reduction of peptide character of HIV protease inhibitors that exhibit nan-omolar potency against multi-drug resistant HIV-1 strains."J.Med.Chem.. 46. 1764-1768 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Little, R.F., Mitsuya H.et al.: "Highly effective treatment of acquired immunodeficiency syndrome-related lymphoma with dose-adjusted EPOCH : impact of antiretroviral therapy suspension and tumor biology."Blood. 101. 4653-4659 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Wang R., Mitsuya H.et al.: "Inhibition of human immunodeficiency virus reverse transcriptase by synadenol triphosphate and its E-isomer."J.Med.Chem.. 46. 4799-4802 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Matsumi S., Mitsuya H.et al.: "Pathways for the emergence of multi-dideoxynucleoside-resistant HIV-1 variants."AIDS. 17. 1127-1137 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kawamura T., Mitsuya H.et al.: "Decreased stimulation of CD4+ T cell proliferation and IL-2 production by highly enriched populations of HIV-infected dendritic cells."J.Immunol.. 170. 4260-4266 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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