Purification of group C meningococcal capsular polysaccharide by chromatography as well as safety and immunogenicity of prepared polysaccharide-protein conjugate
Objective To purify group C meningococcal capsular polysaccharide by chromatography instead of cold phenol extraction and preliminarily evaluate the safety and immunogenicity of polysaccharide-protein conjugate prepared. Methods Group C meningococcal capsular polysaccharide was pre-treated with mild surfactant sodium deoxycholate and purified by anion-exchange chromatography with Capto adhere and Capto DEAE columns,from which residual sodium deoxycholate was removed by desalting. The sodium deoxycholate con...