43 results about "Pneumococcal conjugate vaccine" patented technology

Various improvements to vaccines that include a serogroup C meningococcal conjugate antigen, including: (a) co-administration with acellular B. pertussis antigen; (b) co-administration with an inactivated poliovirus antigen; (c) supply in a kit together with a separate pneumococcal conjugate component, which may be in a liquid form; and (d) use in combination with a pneumococcal conjugate antigen but without an aluminum phosphate adjuvant. A kit may have: (a) a first immunogenic component that comprises an aqueous formulation of a conjugated capsular saccharide from Streptococcus pneumoniae; (b) a second immunogenic component that comprises a conjugated capsular saccharide from Neisseria meningitidis serogroup C.

Conjugated meningococcal capsular saccharides will be introduced into immunization schedules in the near future, but the phenomenon of “carrier suppression” must first be addressed, particularly where multiple conjugates are to be used. It has been found that diphtheria toxoid and its derivatives (such as CRM197) can safely be used as the carrier protein, even where multiple meningococcal conjugates are administered at the same time and where a patient has previously been exposed to the carrier protein, either in the form of a previous immunogen (e.g. in a DTP vaccine) or as a previous carrier protein (e.g. in a Hib or pneumococcal conjugate vaccine). The invention provides a method for immunizing a patient, comprising administering multiple conjugates of meningococcal capsular saccharides, wherein each conjugate comprises a diphtheria toxoid (or derivative thereof) carrier protein, and the capsular saccharide, and wherein the patient has been pre-immunized with a diphtheria toxoid (or derivative thereof).

Conjugated meningococcal capsular saccharides will be introduced into immunization schedules in the near future, but the phenomenon of “carrier suppression” must first be addressed, particularly where multiple conjugates are to be used. In the invention, tetanus toxoid is used as the carrier protein, even where multiple meningococcal conjugates are administered at the same time and where a patient has previously been exposed to the carrier protein, either in the form of a previous immunogen (e.g. in a DTP vaccine) or as a previous carrier protein (e.g. in a Hib or pneumococcal conjugate vaccine). The invention provides a method for immunizing a patient, comprising administering multiple conjugates of meningococcal capsular saccharides, wherein each conjugate comprises a tetanus toxoid carrier protein, and the capsular saccharide, and wherein the patient has been pre-immunized with a tetanus toxoid.

This disclosure relates to vaccine formulations comprising an immunogenic composition for inducing antibodies to both S. pneumoniae and N. meningitides in a subject. In a preferred aspect, the immunogenic composition comprises covalently conjugated recombinant PsaA (“rPsaA”) from S. pneumoniae and capsular polysaccharide from N. meningitidis serogroup C. This disclosure further relates to methods for producing the immunogenic composition as well as methods for their use.

The invention relates to a novel pneumococcal conjugate vaccine and a preparation method thereof. The novel pneumococcal conjugate vaccine comprises a dual-valent serum type pneumococcal capsular sugar-protein combination and / or a multi-valent serum type pneumococcal capsular sugar-protein combination. The dual-valent serum type capsular sugar-protein combination is a combination formed by combining two different serum types of capsular sugar with a protein carrier through chemical bonds, and the two different serum types of capsular sugar form links in the structure according to the combination with the protein carrier through the chemical bonds. The multi-valent serum type capsular sugar-protein combination is a combination formed by combining two different serum types of capsular sugarwith a protein carrier through chemical bonds, and the two different serum types of capsular sugar form links in the structure according to the combination with the protein carrier through the chemical bonds. In addition, the invention also provides a method of preparing the bacterial capsular sugar-protein conjugate vaccine.

The present invention provides pneumococcal conjugate vaccine formulations comprising surfactant systems incorporating polysorbate 20 or a combination of a poloxamer and a polyol.

The present invention provides a number of process improvements related to the conjugation of capsular polysaccharides from Streptococcus pneumoniae to a carrier protein. These processes are serotypespecific and include acid hydrolysis, addition of sodium chloride to the reductive amination reaction, and addition of sucrose to dissolve polysaccharides. Polysaccharide-protein conjugates prepared using the processes of the invention can be included in multivalent pneumococcal conjugate vaccines.

The present invention relates to a multivalent Pneumococcal conjugate vaccine (PCV) composition comprising: 1) at least 12 capsular polysaccharides selected from serotypes 1, 3, 4, 5, 6B, 7F, 9N, 9V, 15B, 14, 18C, 19A, 19F, 22F, 23F and 33F of S. pneumoniae activated with CDAP and conjugated to carrier protein selected from CRM197, pneumococcal surface protein A (PspA), pneumococcal adhesin protein (PsaA) or combination thereof and 2) a pharmaceutically acceptable carrier, wherein the composition does not contain capsular polysaccharide from serotype 6A.

The present invention provides a process improvement related to the conjugation of capsular polysaccharides from Streptococcus pneumoniae (S. pneumoniae) serotype 35B to a carrier protein. The serotype 35B polysaccharide-protein conjugate, prepared by the disclosed process, is, among other things, more immunogenic than similar conjugates made by prior art methods. S. pneumoniae serotype 35B polysaccharide-protein conjugates prepared using the processes of the invention can be included in multivalent pneumococcal conjugate vaccine compositions.

The present invention provides capsular polysaccharides from Streptococcus pneumoniae serotypes identified using NMR. The present invention further provides polysaccharide-protein conjugates in which capsular polysaccharides from one or more of these serotypes are conjugated to a carrier protein such as CRM197. Polysaccharide-protein conjugates from one or more of these serotypes may be included in multivalent pneumococcal conjugate vaccines having polysaccharides from multiple additional Streptococcus pneumoniae serotypes.