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    • 7. 发明申请
    • COMPOSITIONS FOR STIMULATING CYTOKINE SECRETION AND INDUCING AN IMMUNE RESPONSE
    • 用于刺激细胞因子分泌和诱导免疫应答的组合物
    • WO0115726A3
    • 2001-07-26
    • PCT/CA0001013
    • 2000-08-28
    • INEX PHARMACEUTICALS CORPSEMPLE SEAN CHARASYM TROY OKLIMUK SANDRA KKOJIC LJILJIANA DBRAMSON JONATHAN LMUI BARBARAHOPE MICHAEL J
    • SEMPLE SEAN CHARASYM TROY OKLIMUK SANDRA KKOJIC LJILJIANA DBRAMSON JONATHAN LMUI BARBARAHOPE MICHAEL J
    • A61K9/00A61K9/127A61K31/711A61K38/00A61K39/39A61K47/48A61P37/02A61P37/04A61P43/00A61K31/7088A61P35/00
    • A61K31/7088A61K9/1272A61K31/711A61K31/7125A61K39/39A61K2039/55555A61K2039/55561C12N2310/18
    • Lipid-nucleic acid particles can provide therapeutic benefits, even when the nucleic acid is not complementary to coding sequences in target cells. It has been found that lipid-nucleic acid particles, including those containing non-sequence specific oligodeoxynucleotides, can be used to stimulate cytokine secretion, thus enhancing the overall immune response of a treated mammal. Further, immune response to specific target antigens can be induced by administration of an antigenic molecule in association with lipid particles containing non-sequence specific oligodeoxynucleotides. The nucleic acid which is included in the lipid-nucleic acid particle can be a phosphodiester (i.e., an oligodeoxynucleotide consisting of nucleotide residues joined by phosphodiester linkages) or a modified nucleic acid which includes phosphorothioate or other modified linkages, and may suitably be one which is non-complementary to the human genome, such that it acts to provide immunostimulation in a manner which is independent of conventional base-pairing interactions between the nucleic acid and nucleic acids of the treated mammal. In particular, the nucleic acid may suitably contain an immune-stimulating motif such as a CpG motif, or an immune stimulating palindromic sequence. The cationic lipid included in the nucleic acid particles may be suitably selected from among DODAP, DODMA, DMDMA, DOTAP, DC-Chol, DDAB, DODAC, DMRIE, DOSPA and DOGS. In addition, the lipid particle may suitably contain a modified aggregation-limiting lipid such as a PEG-lipid, a PAO-lipid or a ganglioside.
    • 即使当核酸与靶细胞中的编码序列不互补时,脂质 - 核酸颗粒也可提供治疗益处。 已经发现,包括含有非序列特异性寡脱氧核苷酸的脂质核酸颗粒可用于刺激细胞因子分泌,从而增强被治疗哺乳动物的总体免疫应答。 此外,可以通过与含有非序列特异性寡脱氧核苷酸的脂质颗粒结合施用抗原分子来诱导对特异性靶抗原的免疫应答。 包含在脂质 - 核酸颗粒中的核酸可以是磷酸二酯(即,由通过磷酸二酯键连接的核苷酸残基组成的寡脱氧核苷酸)或包括硫代磷酸酯或其它修饰的连接的修饰的核酸,并且可以适当地是 与人类基因组不互补,使得其以不依赖于经处理的哺乳动物的核酸和核酸之间的常规碱基配对相互作用的方式提供免疫刺激。 特别地,核酸可以适当地含有免疫刺激基序,例如CpG基序或免疫刺激回文序列。 包含在核酸颗粒中的阳离子脂质可以适当地选自DODAP,DODMA,DMDMA,DOTAP,DC-Chol,DDAB,DODAC,DMRIE,DOSPA和DOGS。 此外,脂质颗粒可以适当地含有修饰的聚集限制性脂质,例如PEG-脂质,PAO-脂质或神经节苷脂。