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Updated: Jun 19, 2026

Homogeneous Glycoconjugate Produced by Combined Unnatural Amino Acid Incorporation and Click-Chemistry for Vaccine Purposes
Published on: December 19, 2020
Synthesis, conjugation, and immunological evaluation of the serogroup 6 pneumococcal oligosaccharides
Archana R Parameswar1, In Ho Park, Rina Saksena
1Department of Chemistry and Biochemistry, University of Missouri, St. Louis, 63121, USA.
Abstract:
The first synthesis of the newly discovered oligosaccharide of pneumococcal serotype 6C and its spacer-containing analogue is reported. Conjugation of the spacer-containing oligosaccharides of pneumococcal saccharides 6A, 6B, 6C and derivatives thereof with bovine serum albumin (BSA) protein carrier was carried out by using squaric-acid approach to obtain the oligosaccharide-protein conjugates in excellent yields. The conjugates have been tested with a rabbit antiserum pool (Pool B) used for pneumococcal serotyping. The results showed that synthetic carbohydrate conjugates express epitopes found in native capsular polysaccharides of serotypes 6A, 6B, and 6C.
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