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HIV感染阻止効果を持つリボザイムの開発と応用

Research Project

Project/Area Number 09557084
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Hematology
Research InstitutionTohoku University (1998)
Kyoto University (1997)

Principal Investigator

服部 俊夫  東北大学, 大学院・医学系研究科, 教授 (30172935)

Co-Investigator(Kenkyū-buntansha) 嶋山 隆  日立化成, 筑波開発研究所, 研究員
本多 三男  国立感染症研究所, エイズ研究センター, 教授 (20117378)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥11,100,000 (Direct Cost: ¥11,100,000)
Fiscal Year 1998: ¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 1997: ¥6,900,000 (Direct Cost: ¥6,900,000)
KeywordsHIV / ribozyme / V3 loop / gene therapy / gene thotopy / V3loop / リボザイム / AIDS / envelope
Research Abstract

Ribozymeは配列特異的に標的のRNAをmultiple-turn overで切断する活性があり、その抗HIV-1活性を検討した。私たちはHIVの細胞へのentryの際に重要な役割をするgp120のV3 1oopの中に標的を見つけRibozymeを合成してin vitroとin vivoでその抗ウイルス活性を検討した。Ribozymeを用いて遣伝子治療を行う際に細胞内のribonuclaseに対する安定性を高くするために安定化ribozyme (phosphorothioate DNA/RNAキメラRibozyme)を作成して実験に供した。標的としてはV3 1oopを含む346bpのDNA fragmentをPCRで増幅し、安定化rbozymeは野生化ribozymeよりも切断活性が若干低下するだけであることを確認した。また共焦点顕微鏡を用いて、安定化ribozymeは細胞内でも野性型ribozymeよりも、より安定であることを証明した。高感度な感染系を樹立するためにluciferase遺伝子をもち、ribozymeが作用しないようにV3領域を欠落させた、リポーター遺伝子を用いた。これらの遺伝子と様々なenv遺伝子を細胞に共導入することにより偽ウイルスを作製して、感染実験に供した。合成したRibozymesはenvelope介する細胞融合を抑制し,NL432とSF162ウイルスの感染も効率よく阻止した。また、ribozyme処理細胞ではWestren blotでenv蛋白の発現が低下したので、感染阻止はribozymeによるenv発現の特異的抑制効果によると考えられた。これらのribozymeによる感染予防も視野に入れ応用をめざしたい。

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] Toshio Hattori 他3名: "V3 loop of human immunodeficieny vircus yypol reduces cyclin E expression and induces G1 arrest"AIDS Res. Hum. Retrovir. 13. 31-38 (1998)

    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshio Hattori 他3名: "A declino of anti-DP107 antihedy assxiafes with clinical progression"AIDS. 12. 1557-1559 (1998)

    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshio Hattori 他1名: "T-tropic human immunodeficiency viruo derived V3 loop directly bind to CXCR and inhibit T-hopicinfectio"J Vivol. 72. 9763-9770 (1998)

    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshio Hattori 他8名: "Phosphorothiate hammerhead ribozymls targeting a conserred seguence in the V3 loop region inhibix"Antisense 2 ludeic acid drug delop. 8. 441-450 (1998)

    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshio Hattori 他7名: "Anenhaucement in the binding a bilitr of tachyplesin auclogu"AIDS Res Hur. Retvvar. 15. 419-427 (1999)

    • Related Report
      1998 Final Research Report Summary
  • [Publications] Mitsuo honda 他3名: "HIV sibtype A in Japan"AIDS. 12. 950-952 (1998)

    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshio Hattori 他3名: "V3loop of human immunodeficiency virus typol reduces cyclin E expression and induces G1 arrest." AIDS Res.Hum.Retrovir.13. 31-38 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Toshio Hattori 他8名: "A decline of anti-DP107 antibody asaxiates with clinical progression" AIDS. 12. 1557-1559 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Toshio Hattori 他7名: "T-tropic human immunodeficieucy virus derived V3 loop directly lind to cxCR and inhibit T-tropic infectio" J Virol. 72. 9763-9770 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Toshio Hattori 他8名: "Phosphorothioate hammerhead ribo3ymes torgeting a conserved sequence in the V3 loop region inhibit HZU-1-emtry" Antiseuse Z Nucleic acid drug delop.8. 441-450 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Toshio Hattori 他7名: "Anendaucement in the binding a lilitr of tachyplesin auclogu." AIDS Res.Hun.Retuvir.印刷中.

    • Related Report
      1998 Annual Research Report
  • [Publications] Mitsuo Honda 他3名: "HIV sinbtype A in Japan" AIDS. 12. 950-952 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Toshio Hattori 他4名: "V3 loop of human immunodeficiency virus type 1 suppress interleukin 2 indeed T cell growth." AIDS Res.Hum.Retrovir.13. 151-159 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Toshio Hattori 他8名: "Triazine dyes inhibit HIV-1" Microbiol Immunol.41. 717-724 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Toshio Hattori 他3名: "V3 loop of human immunodeficiency virus type 1 reduced cyclin E expression and induced G1 arrest." AIDS Res.Hum.Retrovir.(印刷中).

    • Related Report
      1997 Annual Research Report
  • [Publications] Mitsuo Honda 他9名: "In SCID-hu mice,Passive transfer of a humanized antibody prevents infection and atropic change of medulla in human." J.Immunol.160. 69-76 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Mitsuo Honda 他12名: "Correlation of titer of antibody to principol neutrolizing domain of HZVMN strain disears progression." AIDS Res.Hum.Retrovir.13,4. 317-326 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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