Abstract: The present invention provides an immunogenic composition of a lipopolysaccharide vaccine and a non-alum adjuvant. The immunogenic composition may be detoxified J5 core lipopolysaccharide of Escherichia coli non-covalently complexed with group B meningococcal outermembrane protein. Also provided are methods for preventing an infection caused by a Gram-negative bacteria in an individual via administering the immunogenic compositions to the individual.

Abstract: The present invention provides an immunogenic composition of a lipopolysaccharide vaccine and a non-alum adjuvant. The immunogenic composition may be detoxified J5 core lipopolysaccharide of Escherichia coli non-covalently complexed with group B meningococcal outermembrane protein. Also provided are methods for preventing an infection caused by a Gram-negative bacteria in an individual via administering the immunogenic compositions to the individual.

Abstract: The present invention describes a detoxified Gram negative J5 core lipopolysaccharide/group B meningococcal outer membrane protein complex vaccine given in conjunction with CpG 7909 adjuvant. This vaccine composition can be used for either active or passive immunization of mammals for the prevention or treatment of sepsis and infection with Gram negative bacteria. The addition of CpG to the vaccine was shown to markedly increase the antibody response in mice. Furthermore, the ability of the endotoxin vaccine in protecting against Gram-negative bacteria such as Francisella tularensis in vivo is also demonstrated herein.

Abstract: A mucosal vaccine for Neisseria based on native outer membrane vesicles (NOMV) prepared from genetically engineered vaccine strain and unexposed to detergents is described. Methods for extending this vaccine approach to other Gram negative bacteria are also decribed.

Abstract: A mucosal vaccine for Neisseria based on native outer membrane vesicles (NOMV) prepared from genetically engineered vaccine strain and unexposed to detergents is described. Methods for extending this vaccine approach to other Gram negative bacteria are also decribed.

Abstract: A method for preparing multivalent proteosomeamphiphilic determinant vaccines suitable for parenteral or mucosal administration using diafiltration or ultrafiltration technology. The amphiplilic determinants include lipopolysaccharides from gram negative bacteria, e.g. S. flexneri, P. shigelloides and S. sonnei. Proteosomes are obtained from group B type 2b meningococci. The active proteosomeamphiphilic determinant complexes (noncovalently complexes) of the vaccine are formed using defiltration or ultrafiltration to remove the detergent. The use of diafiltration or ultrafiltration decreases processing time and the opportunity for contamination and further permits the use of ambient temperature and efficient scaleup. In addition, the process permits the reliable and continuous monitoring of the dialysate which enhances the efficiency of the entire process. The time of dialysis for production of a lot of vaccine is reduced from 710 days to less than 72 hours and usually less than 48 or 4 hours.

Abstract: A continuous method for preparing proteosome-amphiphilic determinant vaccines for parenteral or mucosal administration using diafiltration or ultrafiltration technology. The amphiphilic determinants include lipopolysaccharides from gram negative bacteria, e.g. S. flexneri, P. shigelloides and S. sonnei. Proteosomes are obtained from group B type 2b meningococci. The active proteosome-amphiphilic determinant complexes (non-covalent complexes) of the vaccine are formed using diafiltration or ultrafiltration to remove the detergent under non-static conditions. The use of diafiltration or ultrafiltration decreases processing time and the opportunity for contamination and further permits the use of ambient temperature and efficient scale-up. In addition, the process permits the reliable and continuous monitoring of the dializate which enhances the efficiency of the entire process.

Abstract: Process for preparing a detoxified polysaccharide-outer membrane protein complex from bacterial envelopes; the so-obtained products which are useful as vaccines against infection by the same bacteria and method for protecting animals against the same infection by administration of a pharmaceutical composition containing the detoxified polysaccharide-outer membrane protein complexes.