Abstract: The present invention provides a method of producing a polysaccharide—protein conjugate with capsular polysaccharide from Streptococcus pneumoniae serotype 19F conjugated to a carrier protein. The method includes a prolonged incubation step prior to filtration to remove free polysaccharide.

Abstract: The invention is related to multivalent immunogenic compositions comprising more than one S. pneumoniae polysaccharide protein conjugates, wherein each of the conjugates comprises a polysaccharide from an S. pneumoniae serotype conjugated to a carrier protein, wherein the serotypes of S. pneumoniae are as defined herein. Also provided are methods for inducing a protective immune response in a human patient comprising administering the multivalent immunogenic compositions of the invention to the patient. The multivalent immunogenic compositions are useful for providing protection against S. pneumoniae infection and diseases caused by S. pneumoniae. The compositions of the invention are also useful as part of treatment regimes that provide complementary protection for patients that have been vaccinated with a multivalent vaccine indicated for the prevention of pneumococcal disease.

Abstract: The present invention provides a method of producing a polysaccharide-protein conjugate with capsular polysaccharide from Streptococcus pneumoniae serotype 19F conjugated to a carrier protein. The method includes a prolonged incubation step prior to filtration to remove free polysaccharide.

Abstract: The present invention provides a number of process improvements related to the conjugation of capsular polysaccharides from Streptococcus pneumoniae to a carrier protein. These process are serotype specific 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.

Abstract: The present invention provides methods for making polysaccharide-protein conjugates in which polysaccharides, typically from bacteria, are conjugated to a carrier protein by reductive amination under conditions which improve conjugation reaction consistency, increase consumption of protein during conjugation reaction, generate conjugates of higher molecular weight, and/or reduce the levels of free cyanide in the conjugate reaction product. The polysaccharide-protein conjugates obtained using these methods are useful for inclusion in multivalent vaccines.

Abstract: The present invention provides a method of producing a polysaccharide-protein conjugate with capsular polysaccharide from Streptococcus pneumoniae serotype 19F conjugated to a carrier protein. The method includes a prolonged incubation step prior to filtration to remove free polysaccharide.

Abstract: The present invention provides methods for making polysaccharide-protein conjugates in which polysaccharides, typically from bacteria, are conjugated to a carrier protein by reductive amination under conditions which improve conjugation reaction consistency, increase consumption of protein during conjugation reaction, generate conjugates of higher molecular weight, and/or reduce the levels of free cyanide in the conjugate reaction product. The polysaccharide-protein conjugates obtained using these methods are useful for inclusion in multivalent vaccines.

Abstract: The invention is related to multivalent immunogenic compositions comprising more than one S. pneumoniae polysaccharide protein conjugates, wherein each of the conjugates comprises a polysaccharide from an S. pneumoniae serotype conjugated to a carrier protein, wherein the serotypes of S. pneumoniae are as defined herein. In some embodiments, at least one of the polysaccharide protein conjugates is formed by a conjugation reaction comprising an aprotic solvent. In further embodiments, each of the polysaccharide protein conjugates is formed by a conjugation reaction comprising an aprotic solvent. Also provided are methods for inducing a protective immune response in a human patient comprising administering the multivalent immunogenic compositions of the invention to the patient. The multivalent immunogenic compositions are useful for providing protection against S. pneumoniae infection and diseases caused by S. pneumoniae.

Abstract: The invention is related to multivalent immunogenic compositions comprising more than one S. pneumoniae polysaccharide protein conjugates, wherein each of the conjugates comprises a polysaccharide from an S. pneumoniae serotype conjugated to a carrier protein, wherein the serotypes of S. pneumoniae are as defined herein. In some embodiments, at least one of the polysaccharide protein conjugates is formed by a conjugation reaction comprising an aprotic solvent. In further embodiments, each of the polysaccharide protein conjugates is formed by a conjugation reaction comprising an aprotic solvent. Also provided are methods for inducing a protective immune response in a human patient comprising administering the multivalent immunogenic compositions of the invention to the patient. The multivalent immunogenic compositions are useful for providing protection against S. pneumoniae infection and diseases caused by S. pneumoniae.

Abstract: The present invention provides a number of process improvements related to the conjugation of capsular polysaccharides from Streptococcus pneumoniae to a carrier protein. These process are serotype specific 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.

Abstract: The present invention provides a method of producing a polysaccharide-protein conjugate with capsular polysaccharide from Streptococcus pneumoniae serotype 19F conjugated to a carrier protein. The method includes a prolonged incubation step prior to filtration to remove free polysaccharide.

Abstract: The present invention provides methods for making polysaccharide-protein conjugates in which polysaccharides, typically from bacteria, are conjugated to a carrier protein by reductive amination under conditions which improve conjugation reaction consistency, increase consumption of protein during conjugation reaction, generate conjugates of higher molecular weight, and/or reduce the levels of free cyanide in the conjugate reaction product. The polysaccharide-protein conjugates obtained using these methods are useful for inclusion in multivalent vaccines.

Abstract: The invention is related to multivalent immunogenic compositions comprising more than one S. pneumoniae polysaccharide protein conjugates, wherein each of the conjugates comprises a polysaccharide from an S. pneumoniae serotype conjugated to a carrier protein, wherein the serotypes of S. pneumoniae are as defined herein. In some embodiments, at least one of the polysaccharide protein conjugates is formed by a conjugation reaction comprising an aprotic solvent. In further embodiments, each of the polysaccharide protein conjugates is formed by a conjugation reaction comprising an aprotic solvent. Also provided are methods for inducing a protective immune response in a human patient comprising administering the multivalent immunogenic compositions of the invention to the patient. The multivalent immunogenic compositions are useful for providing protection against S. pneumoniae infection and diseases caused by S. pneumoniae.

Abstract: Methods of isolating clinical-grade plasmid DNA from manufacturing processes, including large-scale fermentation regimes, are disclosed which encompass alternatives to two core unit operations common to plasmid DNA purification processes. The novel upstream and downstream purification processes disclosed herein provide for reduced production costs and increase process robustness. Either or both of the purification processes disclosed herein may be used in combination with additional purification steps known in the art that are associated with DNA plasmid purification technology.

Abstract: Methods of isolating clinical-grade plasmid DNA from manufacturing processes, including large-scale fermentation regimes, are disclosed which encompass alternatives to two core unit operations common to plasmid DNA purification processes. The novel upstream and downstream purification processes disclosed herein provide for reduced production costs and increase process robustness. Either or both of the purification processes disclosed herein may be used in combination with additional purification steps known in the art that are associated with DNA plasmid purification technology.

Abstract: The present invention relates to a nonchromatographic-based process for the isolation of clinical grade plasmid DNA from bacterial cells. The exemplified methods described herein outline a scaleable, economically favorable protocol for the purification of clinical grade plasmid DNA from E. coli which includes CTAB-based precipitation of DNA in combination with adsorption of impurities to calcium silicate.

Abstract: The present invention relates to a nonchromatographic-based process for the isolation of clinical grade plasmid DNA from bacterial cells. The exemplified methods described herein outline a scaleable, economically favorable protocol for the purification of clinical grade plasmid DNA from E. coli which includes CTAB-based precipitation of DNA in combination with adsorption of impurities to calcium silicate.

Abstract: The present invention relates to a nonchromatographic-based process for the isolation of clinical grade plasmid DNA from bacterial cells. The exemplified methods described herein outline a scaleable, economically favorable protocol for the purification of clinical grade plasmid DNA from E. coli which includes CTAB-based precipitation of DNA in combination with adsorption of impurities to calcium silicate.

Abstract: The present invention relates to a nonchromatographic-based process for the isolation of clinical grade plasmid DNA from bacterial cells. The exemplified methods described herein outline a scaleable, economically favorable protocol for the purification of clinical grade plasmid DNA from E. coli which includes CTAB-based precipitation of DNA in combination with adsorption of impurities to calcium silicate.

Abstract: The present invention relates to a nonchromatographic-based process for the isolation of clinical grade plasmid DNA from bacterial cells. The exemplified methods described herein outline a scaleable, economically favorable protocol for the purification of clinical grade plasmid DNA from E. coli which includes CTAB-based precipitation of DNA in combination with adsorption of impurities to calcium silicate.