Abstract: A composition is provided comprising N. meningitidis outer membrane vesicles, wherein said outer membrane vesicles are enriched with at least one antigenic component. The composition is suitable for use in vaccines and for treatment of infection, particularly meningococcal infection, demonstrating a broad spectrum of protection. A number of preferred antigenic components are described and include antigenic proteins and proteoglycans derived from N. meningitidis.

Abstract: A composition is provided comprising N. meningitidis outer membrane vesicles, wherein said outer membrane vesicles are enriched with at least one antigenic component. The composition is suitable for use in vaccines and for treatment of infection, particularly meningococcal infection, demonstrating a broad spectrum of protection. A number of preferred antigenic components are described and include antigenic proteins and proteoglycans derived from N. meningitidis.

Abstract: The present invention is in the field of combination therapies, including vaccine compositions, which comprise polysaccharide-protein conjugates and outer membrane vesicles (OMVs) from commensal bacteria, particularly commensal Neisseria.

Abstract: A composition is provided comprising N. meningitidis outer membrane vesicles, wherein said outer membrane vesicles are enriched with at least one antigenic component. The composition is suitable for use in vaccines and for treatment of infection, particularly meningococcal infection, demonstrating a broad spectrum of protection. A number of preferred antigenic components are described and include antigenic proteins and proteoglycans derived from N. meningitidis.

Abstract: A composition is prepared from a mixture of different vesicles, such as outer membrane vesicles (OMVs) and vaccines are based thereon. Another composition comprises in a single vesicle a combination of antigens and/or other vesicle components deriving from separate vesicles; again vaccines are prepared therefrom.

Abstract: Methods and compositions for the treatment of microbial infection, and in particular meningococcal disease, comprise a commensal Neisseria or an extract of a commensal Neisseria. Further methods and compositions comprise commensal Neisseria which express genes from virulent strains of Neisseria and/or heterologous gene products from non-neisserial sources. Such compositions are used in vaccine preparations for the treatment of microbial infection.

Abstract: Methods and compositions for the treatment of microbial infection, and in particular meningococcal disease, comprise a commensal Neisseria or an extract of a commensal Neisseria. Further methods and compositions comprise conimensal Neisseria which express genes from virulent strains of Neisseria and/or heterologous gene products from non-Neisserial sources. Such compositions are used in vaccine preparations for the treatment of microbial infection.

Abstract: The invention provides methods of screening commensal and pathogenic bacteria for previously unidentified vaccine antigens, based upon identifying polypeptide antigens that bind to sera raised against commensal bacterial proteins. Also provided are vaccine compositions and methods of preparing vaccine compositions comprising the antigens identified by the screening methods. Antigens and uses thereof are also described.

Abstract: A composition comprising Transferrin binding proteins A and B is described (TbpA and TbpB). The composition is suitable for use in vaccines and for treatment of Gram negative bacterial infection, particularly meningococcal infection, demonstrating a broad spectrum of protection to a number of different bacterial pathogens. Also described are compositions comprising Tbps and other components, such as neisserial outer membrane vesicles and Cu,Zn-Superoxide dismutase. Methods for preparation of these compositions and their uses in vaccination against disease are further provided.

Abstract: A composition is provided comprising N. meningitidis outer membrane vesicles, wherein said outer membrane vesicles are enriched with at least one antigenic component. The composition is suitable for use in vaccines and for treatment of infection, particularly meningococcal infection, demonstrating a broad spectrum of protection. A number of preferred antigenic components are described and include antigenic proteins and proteoglycans derived from N. meningitidis.

Abstract: Neisserial iron uptake proteins including transferrin binding protein A (TbpA) and B (TbpB) in both full length form and as immunogenic fragments are made recombinantly. A non-neisserial cell expresses a TbpA which is extracted from the cell under mild conditions and retains substantially the antigenicity of native TbpA on its surface. TbpB is also made recombinantly and both TbpA and TbpB are included in vaccine compositions.

Abstract: Vaccine conjugates are described comprising a capsular polysaccharide antigen conjugated to a carrier molecule, which carrier molecule is a protein associated with iron uptake by pathogenic microorganisms. The vaccine conjugate may comprise second or additional antigens also conjugated to the carrier. In a preferred embodiment, the carrier is a transferrin binding protein, in particular TbpA or TbpB. Also described are methods for conjugating the antigen/s to the carrier molecule, and to the use of transferrin binding protein in the manufacture of a carrier-antigen conjugate for vaccination. Affinity matrices comprising immobilised ligand for an iron uptake protein, and the use thereof for purifying a vaccine conjugate according to the present invention are also described.

Abstract: Methods and compositions for the treatment of microbial infection, and in particular meningococcal disease, comprise a commensal Neisseria or an extract of a commensal Neisseria. Further methods and compositions comprise commensal Neisseria which express genes from virulent strains of Neisseria and/or heterologous gene products from non-neisserial sources. Such compositions are used in vaccine preparations for the treatment of microbial infection.

Abstract: Methods and compositions for the treatment of microbial infection, and in particular meningococcal disease, comprise a commensal Neisseria or an extract of a commensal Neisseria. Further methods and compositions comprise commensal Neisseria which express genes from virulent strains of Neisseria and/or heterologous gene products from non-Neisserial sources. Such compositions are used in vaccine preparations for the treatment of microbial infection.