METHODS FOR MAKING POLYSACCHARIDE-PROTEIN CONJUGATES

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 co...

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Bibliographische Detailangaben
Hauptverfasser: He, Jian, Winters, Michael Albert, Wen, Emily, Bajaj, Jitin
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung: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.