Investigation of novel cyclic structure in glycoconjugate using a simple model system
| Autor: | Jin Xie, Olga V. Friese, Michael T. Jones, Wei Huang, Hanliu Leah Wang, Keith A. Davis, Mingzhang Wang, Jason C. Rouse, Stephen A. Kolodziej, James A. Carroll, Paul W. Brown, Qin Zou |
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| Rok vydání: | 2020 |
| Předmět: |
Models
Molecular Magnetic Resonance Spectroscopy Tertiary amine Glycoconjugate Peptide 010402 general chemistry 01 natural sciences Biochemistry Reductive amination Analytical Chemistry Carbohydrate Conformation Monosaccharide Amines Amination chemistry.chemical_classification Aldehydes Vaccines Conjugate 010405 organic chemistry Organic Chemistry Monosaccharides General Medicine 0104 chemical sciences chemistry Carbohydrate conformation Peptides Glycoconjugates Conjugate |
| Zdroj: | Carbohydrate research. 495 |
| ISSN: | 1873-426X |
| Popis: | Bacterial capsular polysaccharide protein conjugates are a major class of vaccines for preventing severe bacterial infections. The conjugation of a polysaccharide to a carrier protein is critical for inducing adaptive immune response in healthy humans. Due to the high molecular mass and extensive structural heterogeneity of the glycoconjugate, the underlying sugar linkages and polypeptide site selectivity of the conjugation reaction are not well characterized and understood. Here, we report a model conjugation study using a monosaccharide and a synthetic peptide to investigate the fundamental reductive amination chemistry, which is one of the most commonly utilized conjugation strategies for glycoconjugate vaccines. We identified a cyclic tertiary amine linkage as the primary conjugation linkage for monosaccharides containing dialdehydes. Such linkage is previously not well-recognized by the glycoconjugate vaccine field. Our study has provided insights into this commonly used, yet complex conjugation chemistry and will benefit the design of future protein-polysaccharide-based vaccines. |
| Databáze: | OpenAIRE |
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