MULTIVALENT COMPOSITION OF PNEUMOCOCCAL POLYSACCHARIDE-PROTEIN CONJUGATE Russian patent published in 2013 - IPC A61K39/09 A61K47/48 A61K39/385 A61P31/04 

FIELD: medicine, pharmaceutics.

SUBSTANCE: group of inventions refers to medicine, namely biopharmaceutics and may be used for preparing an immunogenic conjugate. That is ensured by: (a) a reaction of serotype 1 purified polysaccharide with an alkaline buffer to prepare serotype 1 partially des-O-acetylated polysaccharide; (b) a reaction of serotype 1 partially des-O-acetylated polysaccharide and a weak acid to produce serotype 1 neutralised partially des-O-acetylated polysaccharide; (c) a reaction of serotype 1 neutralised partially des-O-acetylated polysaccharide and an oxidising agent to prepare serotype 1 activated polysaccharide; (d) mixing of serotype 1 activated polysaccharide and a carrier protein; (d') combined lyophilisation of mixed serotype 1 activated polysaccharide and the carrier protein before a reaction with a reducing agent; (e) reaction of mixed serotype 1 activated polysaccharide and the carrier protein with the reducing agent to prepare a serotype 1 activated polysaccharide/carrier protein conjugate; and (f) capping of unreacted aldehydes in the serotype 1 activated polysaccharide/carrier protein conjugate. What is also presented is a method for preparing a multivalent immunogenic composition.

EFFECT: group of inventions enables preparing the composition presented in the form of vaccines that decreases a number of severe pneumococcal diseases.

27 cl, 17 ex