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    • 4. 发明授权
    • Nucleic acid comprising chimeric gene derived from hepatitis C virus
    • 包含源自丙型肝炎病毒的嵌合基因的核酸
    • US08604179B2
    • 2013-12-10
    • US12989592
    • 2009-04-24
    • Daisuke AkazawaTakaji Wakita
    • Daisuke AkazawaTakaji Wakita
    • A61K39/29C07K14/005C12N7/00
    • A61K39/29A61K39/12A61K2039/5252A61K2039/5254C07K14/005C07K16/109C07K2319/00C12N7/00C12N2770/24222C12N2770/24234C12N2770/24251C12Q1/707C12Q2600/136C12Q2600/156
    • This invention provides infectious chimeric HCV particles that can be used for vaccines. This invention further provides a nucleic acid comprising a chimeric gene derived from the hepatitis C virus comprising regions each encoding Core protein, E1 protein, E2 protein and p7 protein derived from a hepatitis C virus strain other than JFH-1 strain; NS2 protein derived from JFH-1 strain or a hepatitis C virus strain other than JFH-1 strain, or a chimeric NS2 protein of NS2 protein derived from JFH-1 strain and NS2 protein derived from a hepatitis C virus strain other than JFH-1 strain; and NS3 protein, NS4A protein, NS4B protein, NS5A protein, and NS5B protein derived from JFH-1 strain in that order in 5′ to 3′ direction, wherein the 328th proline residue from the amino acid residue at N-terminus of the Core protein is substituted with an amino acid residue other than proline. This invention further provides chimeric HCV particles comprising such nucleic acid, and use of such HCV particles for vaccines.
    • 本发明提供可用于疫苗的感染性嵌合HCV颗粒。 本发明还提供了包含源自丙型肝炎病毒的嵌合基因的核酸,其包含各自编码来自除了JFH-1株之外的丙型肝炎病毒株的核心蛋白质,E1蛋白质,E2蛋白质和p7蛋白质的区域; 衍生自JFH-1株或除JFH-1株以外的丙型肝炎病毒株的NS2蛋白或源自JFH-1株的NS2蛋白的嵌合NS2蛋白和来自除JFH-1以外的丙型肝炎病毒株的NS2蛋白 应变; 和NS3蛋白,NS4A蛋白,NS4B蛋白,NS5A蛋白和NS5B蛋白,其在5'至3'方向上按顺序从JFH-1菌株衍生,其中来自核心N末端的氨基酸残基的第328位脯氨酸残基 蛋白质被除脯氨酸以外的氨基酸残基取代。 本发明进一步提供了包含这种核酸的嵌合HCV颗粒,以及这种HCV颗粒用于疫苗的用途。
    • 6. 发明申请
    • CELL CULTURE SYSTEM OF A HEPATITIS C GENOTYPE 3A AND 2A CHIMERA
    • 乙型肝炎病毒基因组3A和2A型细胞培养系统
    • US20100093841A1
    • 2010-04-15
    • US12595822
    • 2008-04-11
    • Judith M. GottweinTroels Kasper Høyer ScheelJesper Eugen-OlsenJens Bukh
    • Judith M. GottweinTroels Kasper Høyer ScheelJesper Eugen-OlsenJens Bukh
    • A61K31/7052C07H21/00C12N15/63C12P21/00C12Q1/70C12Q1/68C12N7/00C07K16/00A61P31/12
    • C12N7/00A61K2039/5254C12N2770/24251
    • The present inventors have developed a culture system for genotype 3a, which has a high prevalence worldwide. Since intergenotypic recombinant genomes exploiting the replication characteristics of JFH1 will be a valuable tool for the genotype specific study of the replaced genes and related therapeutics, the present inventors constructed a genotype 3a/2a (S52/JFH1) recombinant containing the structural genes (Core, E1, E2), p7 and NS2 of strain S52 and characterized it in Huh7.5 cells. S52/JFH1 and J6/JFH viruses passaged in cell culture had comparable growth kinetics and yielded similar peak HCV RNA titers and infectivity titers. Direct genome sequencing of cell culture derived S52/JFH1 viruses identified putative adaptive mutations in Core, E2, p7, NS3 and NS5A; clonal analysis revealed, that all genomes analyzed exhibited different combinations of these mutations. Finally, viruses resulting from transfection with RNA transcripts of five S52/JFH1 recombinant containing these combinations of putative adaptive mutations performed as efficiently as J6/JFH viruses in Huh7.5 15 cells and were all genetically stable after viral passage. In conclusion, the present inventors have developed a robust and genetically stable cell culture system for HCV genotype 3a.
    • 本发明人已经开发了一种在全球范围内具有高流行性的基因型3a的培养系统。 由于利用JFH1的复制特征的基因型重组基因组将成为替代基因和相关治疗剂的基因型特异性研究的有价值的工具,本发明人构建了一种含有结构基因(核心,核苷酸)的基因型3a / 2a(S52 / JFH1) E1,E2),p7和NS2,并在Huh7.5细胞中表征。 在细胞培养物中传代的S52 / JFH1和J6 / JFH病毒具有相似的生长动力学,并产生相似的HCV RNA滴度和感染性滴度。 来自S52 / JFH1病毒的细胞培养物的直接基因组测序鉴定了核心,E2,p7,NS3和NS5A中的推定适应性突变; 克隆分析显示,所有分析的基因组都显示出这些突变的不同组合。 最后,含有这些组合推定的适应性突变的5种S52 / JFH1重组RNA转录物转染的病毒与Huh7.515细胞中的J6 / JFH病毒一样有效地进行,并且在病毒传代后都具有遗传稳定性。 总之,本发明人已经开发了用于HCV基因型3a的稳健和遗传稳定的细胞培养系统。