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    • 8. 发明申请
    • LPS BASED VACCINES
    • 基于LPS的疫苗
    • WO2010025542A1
    • 2010-03-11
    • PCT/CA2009/001201
    • 2009-09-08
    • NATIONAL RESEARCH COUNCIL OF CANADACOX, Andrew, D.ST. MICHAEL, FrankRICHARDS, James, C.MOXON, E. Richard
    • COX, Andrew, D.ST. MICHAEL, FrankRICHARDS, James, C.MOXON, E. Richard
    • C08B37/00A61K39/095A61K39/102A61K39/385A61P31/04A61P37/04
    • A61K39/095A61K39/102A61K39/1045A61K2039/55566A61K2039/6037C08B37/0063
    • The removal of the glycosidic phosphate from the reducing end of the derived LPS molecule creates an aldehydo functionality which causes the formation of an immunologically dominant neo-epitope. Conjugation to the reducing end of a carbohydrate molecule following removal of the glycosidic phosphate traps the reducing glucosamine residue in an open-chain form which surprisingly was found to dominate the immune response. We therefore modified our conjugation strategy to avoid this open-chain form, by utilising the amino functionality created by the isolated amidase activity from Dictyostelium discoideum, concomitant with a unique blocking and un-blocking strategy to protect the immunologically important phosphoethanolamine inner core residue. These antigenic structures are useful in producing vaccines and compounds helpful in combating Gram-negative bacteria. Also described are specific structures of the carbohydrate molecules derived from a variety of Gram-negative bacteria, which when presented appropriately as a glycoconjugate will facilitate a functional immune response to the target core oligosaccharide region.
    • 从衍生的LPS分子的还原端去除糖苷磷酸形成醛官能团,其导致形成免疫优势的新表位。 在除去糖苷磷酸盐后,与碳水化合物分子的还原末端的缀合物以开放链形式释放还原葡糖胺残基,令人惊讶地发现其主导免疫应答。 因此,我们修改了我们的共轭策略,以避免这种开链形式,通过利用由盘基网柄菌分离的分离的酰胺酶活性产生的氨基功能,伴随着独特的阻断和非阻断策略来保护免疫重要的磷酸乙醇胺内核残基。 这些抗原结构可用于生产有助于抵抗革兰氏阴性菌的疫苗和化合物。 还描述了衍生自各种革兰氏阴性细菌的碳水化合物分子的特异性结构,当作为糖缀合物适当地呈现时,将促进对靶核心寡糖区域的功能性免疫应答。