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    • 5. 发明申请
    • PATHOGEN VACCINES AND METHODS FOR USING THE SAME
    • 病毒疫苗及其使用方法
    • WO2003094829A2
    • 2003-11-20
    • PCT/CA2003/000680
    • 2003-05-12
    • INEX PHARMACEUTICALS CORPORATIONSEMPLE, SeanCHIKH, GhaniaHOPE, Michael, J.TAM, Ying, K.
    • SEMPLE, SeanCHIKH, GhaniaHOPE, Michael, J.TAM, Ying, K.
    • A61K
    • C12N15/117A61K39/0011A61K39/39A61K2039/55555A61K2039/55561C12N2310/315C12N2310/3341
    • The invention is based on the discovery that vaccines against pathogens, exemplified herein by hepatitis B, can be formulated to enhance stimulation of Th1 type humoral and cellular immune responses by combining a lipid particle with an encapsulated immunostimulatory oligonucleotide (LNA). The LNA is further associated with an antigen from the pathogen. The vaccines may also use two or more different epitopes from the same antigen, or different antigens from the pathogen. Such vaccines are particularly effective in enhancing a Th1 type humoral response when the antigen is coupled to the lipid nucleic acid particle and when the nucleic acid particle has phosphorothioate (PS) backbone. An enhanced humoral response is demonstrated, for example, by a strong early peak of IFN-gamma production observed within hours of vaccination followed by second stronger peak of IFN-gamma production observed several days later, correlated with antibody isotype switching.
    • 本发明基于以下发现:通过将脂质颗粒与包封的免疫刺激寡核苷酸(LNA)组合,可以配制抗乙型肝炎病原体疫苗以增强对Th1型体液和细胞免疫应答的刺激。 LNA还与来自病原体的抗原相关联。 疫苗还可以使用来自相同抗原的两个或多个不同表位或来自病原体的不同抗原。 当抗原与脂质核酸颗粒偶联并且当核酸颗粒具有硫代磷酸酯(PS)主链时,这种疫苗特别有效地增强Th1型体液应答。 证明了增强的体液应答,例如,在接种后数小时内观察到IFN-γ产生强烈的早期峰值,随后几天观察到IFN-γ产生的第二个更强的峰值,与抗体同种型转换相关。