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    • 16. 发明申请
    • CONSENSUS SEQUENCE FOR INFLUENZA A VIRUS
    • INFLUZZA病毒的一致性序列
    • WO2011046996A2
    • 2011-04-21
    • PCT/US2010/052432
    • 2010-10-13
    • THE JOHNS HOPKINS UNIVERSITYNATIONAL UNIVERSITY OF SINGAPOREAUGUST, J. ThomasTAN, Paul ThiamJooTAN, Tin WeeKHAN, Asif Mohammad
    • AUGUST, J. ThomasTAN, Paul ThiamJooTAN, Tin WeeKHAN, Asif Mohammad
    • C07K14/11C12N15/44C12N7/01A61K39/145A61P31/16
    • A61K39/145A61K39/12A61K2039/5154A61K2039/5156A61K2039/70C07K14/005C07K2319/00C12N2760/16122C12N2760/16134
    • Pandemic A(H1N1) continues its global spread, and vaccine production is a serious problem. Protection by current vaccines is limited by the mutational differences that rapidly accumulate in the circulating strains, especially in the virus surface proteins. New vaccine strategies are focusing at conserved regions of the viral internal proteins to produce T cell epitope-based vaccines. T cell responses have been shown to reduce morbidity and promote recovery in mouse models of influenza challenge. We previously reported 54 highly conserved sequences of NP, Ml and the polymerases of all human H1N1, H3N2, H1N2, and H5N1, and avian subtypes over the past 30 years. Sixty-three T cell epitopes elicited responses in HLA transgenic mice (A2, A24, B7, DR2, DR3 and DR4). These epitopes were compared to the 2007-2009 human H1N1 sequences to identify conserved and variant residues. Seventeen T cell epitopes of PB1, PB2, and M1 were selected as vaccine targets by analysis of sequence conservation and variability, functional avidity, non-identity to human peptides, clustered localization, and promiscuity to multiple HLA alleles. The vaccines composed of these epitopes, being highly conserved and temporally stable, would be useful for any avian or human influenza A virus.
    • 甲型H1N1流感继续其全球蔓延,疫苗生产是一个严重的问题。 目前疫苗的保护受到流行株中特别是病毒表面蛋白中迅速积累的突变差异的限制。 新疫苗策略集中于病毒内部蛋白质的保守区域以产生基于T细胞表位的疫苗。 已显示T细胞应答降低发病率并促进流感攻击的小鼠模型中的恢复。 我们以前报道过去30年中54种高度保守的NP,M1和所有人类H1N1,H3N2,H1N2和H5N1以及禽类亚型的聚合酶。 63个T细胞表位在HLA转基因小鼠(A2,A24,B7,DR2,DR3和DR4)中引发应答。 将这些表位与2007-2009年人类H1N1序列进行比较以鉴定保守和变体残基。 通过分析序列保守性和变异性,功能亲合力,与人类肽的非同一性,聚簇定位和对多个HLA等位基因的混杂性,选择PB1,PB2和M1的17个T细胞表位作为疫苗靶标。 由这些表位组成的疫苗高度保守且时间稳定,可用于任何禽流感或人流感病毒。