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2008 Fiscal Year Annual Research Report

新型インフルエンザウイルスの出現機構とその制圧

Research Project

Project/Area Number 18002014
Research InstitutionThe University of Tokyo

Principal Investigator

河岡 義裕  The University of Tokyo, 医科学研究所, 教授 (70135838)

Co-Investigator(Kenkyū-buntansha) 新矢 恭子  神戸大学, 医学部, 准教授 (90374925)
Keywordsインフルエンザ / 抗ウイルス薬 / 薬剤耐性ウイルス / レセプター / ウイルス粒子形成 / タミフル
Research Abstract

1. H5N1インフルエンザウイルスの鳥→ヒト及びヒト→ヒト感染に関わる要因の解析
カモ、ニワトリ、ヒトから分離したH5N1ウイルスの正常ヒト気管支上皮細胞における増殖性を解析したところ、カモ由来株<ニワトリ由来株<ヒト由来株といった明確な傾向がみられた。
ヒトの呼吸器・消化器・眼瞼結膜などの粘膜表面におけるシアル酸分布を解析した結果、ヒトの上部気道にはヒト型シアル酸が多いが、肺胞部には鳥型シアル酸も多く、結腸部からも鳥型シアル酸が検出された。これらの部位は、死亡した患者体内のウイルス分布と一致していた。
2. 抗インフルエンザ薬耐性ウイルス
マウスにおけるオセルタミビル投与実験の結果、H5N1ウイルス感染時には、従来のシーズナルインフルエンザ感染時よりも高濃度、長期間の投与が必要であることが示唆された。
耐性ウイルス出現に備えて、オセルタミビルおよびザナミビルを用いた併用療法について検討したところ、耐性ウイルスの出現頻度は高まるが、有効であることが明らかとなった。
3. 粒子形成機構
A/WSN/33株のNA及びHA分節に由来するモデルvRNAを作製し、ウイルス粒子に取込まれる効率を解析したところ、NA、HA両方の分節が存在するときに取込み効率が増加することが明らかになった。

  • Research Products

    (19 results)

All 2009 2008

All Journal Article (14 results) (of which Peer Reviewed: 14 results) Presentation (5 results)

  • [Journal Article] A single amino acid substitution in the NS1 protein changes the pathogenicity of H5N1 avian influenza viruses in mice2008

    • Author(s)
      Jiao P, et.al.
    • Journal Title

      Journal of Virology 82

      Pages: 1146-1154

    • Peer Reviewed
  • [Journal Article] Establishment of canine RNA polymerase I-driven reverse genetics for influenza A virus : its application for H5N1 vaccine production2008

    • Author(s)
      Murakami S, et.al.
    • Journal Title

      Journal of Virology 82

      Pages: 1605-1609

    • Peer Reviewed
  • [Journal Article] A naturally occurring deletion in its NS gene contributes to the attenuation of an H5N1 swine influenza virus in chickens2008

    • Author(s)
      Zhu Q, et.al.
    • Journal Title

      Journal of Virology 82

      Pages: 220-228

    • Peer Reviewed
  • [Journal Article] A vaccine prepared from a non-pathogenic H5N1 avian influenza virus strain confers protective immunity against highly pathogenic avian influenza virus infection in cvnomolEus macaaues2008

    • Author(s)
      Itho, et.al.
    • Journal Title

      Vaccine 26

      Pages: 562-572

    • Peer Reviewed
  • [Journal Article] A novel approach to the development of effective H5N1 influenza A virus vaccines : the use of M2 cytoplasmic tail mutants2008

    • Author(s)
      Watanabe T, et.al.
    • Journal Title

      Journal of Virology 82

      Pages: 2486-2492

    • Peer Reviewed
  • [Journal Article] Limited compatibility between the RNA polymerase components of influenza virus type A and B2008

    • Author(s)
      Iwatsuki-Horimoto K, et.al.
    • Journal Title

      Virus Research 135

      Pages: 161-165

    • Peer Reviewed
  • [Journal Article] A vaccine prepared from a non-pathogenic H7N7 virus isolated from natural reservoir conferred protective immunity against the challenge with lethal dose of highly pathogenic avian influenza virus in chickens2008

    • Author(s)
      Sakabe S, et.al.
    • Journal Title

      Vaccine 26

      Pages: 2127-2134

    • Peer Reviewed
  • [Journal Article] Induction of cytotoxic T-lymphocyte and antibody responses against highly pathogenic avian influenza virus infection in mice by inoculation of apathogenic H5N1 influenza virus particles inactivated with formalin2008

    • Author(s)
      Sawai T, et.al.
    • Journal Title

      Immunology 124

      Pages: 155-165

    • Peer Reviewed
  • [Journal Article] Comparison of the clinical effectiveness of oseltamivir and zanamivir against influenza virus infection in children2008

    • Author(s)
      Sugaya N, et.al.
    • Journal Title

      Clin Infect Dis 47

      Pages: 339-345

    • Peer Reviewed
  • [Journal Article] Drosophila RNAi screen identifies host genes important for influenza virus replication2008

    • Author(s)
      Hao L, et.al.
    • Journal Title

      Nature 454

      Pages: 890-893

    • Peer Reviewed
  • [Journal Article] Cross-clade protective immunity of H5N1 influenza vaccines in a mouse model2008

    • Author(s)
      Murakami S, et.al.
    • Journal Title

      Vaccine 26

      Pages: 6398-6404

    • Peer Reviewed
  • [Journal Article] Local not systemic modulation of dendritic cell S1P receptors in lung blunts virus-specific immune responses to influenza2008

    • Author(s)
      Marsolais D, et.al.
    • Journal Title

      Mol Pharmacol 74

      Pages: 896-903

    • Peer Reviewed
  • [Journal Article] Pathogenicity of Chinese H5N1 highly pathogenic avian influenza viruses in pigeons2008

    • Author(s)
      Jia B, et.al.
    • Journal Title

      Arch Virol 153

      Pages: 1821-1826

    • Peer Reviewed
  • [Journal Article] Compatibility among polymerase subunit proteins is a restricting factor in reassortment between equine H7N7 and human H3N2 influenza viruses2008

    • Author(s)
      Li C, at.al.
    • Journal Title

      Journal of Virology 82

      Pages: 11880-11888

    • Peer Reviewed
  • [Presentation] Insights into Influenza Pathogenesis and Prevention2009

    • Author(s)
      Kawaoka Y
    • Organizer
      International Symposium on Respiratory Viral Infections
    • Place of Presentation
      バンコク
    • Year and Date
      2009-02-21
  • [Presentation] パンデミック・インフルエンザ-過去と未来-2008

    • Author(s)
      河岡義裕
    • Organizer
      第31回日本分子生物学会
    • Place of Presentation
      神戸
    • Year and Date
      2008-12-12
  • [Presentation] パンデミック・インフルエンザ2008

    • Author(s)
      河岡義裕
    • Organizer
      第56回日本ウイルス学会
    • Place of Presentation
      岡山
    • Year and Date
      2008-10-26
  • [Presentation] 1918 and H5N1 viruses2008

    • Author(s)
      Kawaoka Y
    • Organizer
      XIV. International Congress of Virology
    • Place of Presentation
      イスタンブール
    • Year and Date
      2008-08-15
  • [Presentation] Influenza : Recent findings2008

    • Author(s)
      Kawaoka Y
    • Organizer
      4^<th> China-Japan Bilateral Symposium on Avian Influenza
    • Place of Presentation
      北京
    • Year and Date
      2008-04-29

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Published: 2010-06-11   Modified: 2016-04-21  

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