Abstract:
PCT No. PCT/CA93/00041 Sec. 371 Date Oct. 3, 1994 Sec. 102(e) Date Oct. 3, 1994 PCT Filed Feb. 3, 1993 PCT Pub. No. WO93/15205 PCT Pub. Date Aug. 5, 1993The present invention provides immunogenic synthetic peptides which are useful alone or in PRP-conjugates in vaccines against Hemophilus influenza infection. Modifications are possible within the scope of the invention.
Abstract:
Immunogenic conjugate molecules comprising at least a portion of a capsular polysaccharide of a Streptococcus strain linked to at least a portion of an outer membrane protein of a Haemophilus strain are provided in which the immunogenicity of the capsular polysaccharide is increased. Particularly capsular polysaccharide from Streptococcus pneumoniae are linked to an outer membrane protein of a Haemophilus influenzae strain, which protein may be the P1, P2 or particularly the P6 outer membrane protein. Conjugate molecules comprising the P6 protein linked to a capsular polysaccharide from an encapsulated pathogen other than Streptococcus are also described, in which the immunogenicity of the capsular polysaccharide is enhanced. Such conjugate molecules may be incorporated into immunogenic compositions for protecting a host against disease caused by the Streptococcus strain and preferably also the Haemophilus strain. The conjugate molecules and antibodies specific for the capsular polysaccharide or specific for the outer membrane protein may be employed in diagnostic procedures and kits. A process for individually isolating P1, P2 and P6 outer membrane proteins from a Haemophilus strain is also provided.