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Immunogenicity Assessment of Cell Wall Carbohydrates of Group A Streptococcus via Self-Adjuvanted Glyco-lipopeptides
- Source :
- ACS Infectious Diseases. 7:390-405
- Publication Year :
- 2021
- Publisher :
- American Chemical Society (ACS), 2021.
-
Abstract
- Identifying the immunogenic moieties and their precise structure of carbohydrates plays an important role for developing effective carbohydrate-based subunit vaccines. This study assessed the structure-immunogenicity relationship of carbohydrate moieties of a single repeating unit of group A carbohydrate (GAC) present on the cell wall of group A Streptococcus (GAS) using a rationally designed self-adjuvanted lipid-core peptide, instead of a carrier protein. Immunological evaluation of fully synthetic glyco-lipopeptides (particle size: 300-500 nm) revealed that construct consisting of higher rhamnose moieties (trirhamnosyl-lipopeptide) was able to induce enhanced immunogenic activity in mice, and GlcNAc moiety was not found to be an essential component of immunogenic GAC mimicked epitope. Trirhamnosyl-lipopeptide also showed 75-97% opsonic activity against four different clinical isolates of GAS and was comparable to a subunit peptide vaccine (J8-lipopeptide) which illustrated 65-96% opsonic activity.
- Subjects :
- 0301 basic medicine
chemistry.chemical_classification
Chemistry
Rhamnose
Protein subunit
Immunogenicity
030106 microbiology
Peptide
Carbohydrate
Epitope
03 medical and health sciences
chemistry.chemical_compound
030104 developmental biology
Infectious Diseases
Biochemistry
Peptide vaccine
Moiety
Subjects
Details
- ISSN :
- 23738227
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- ACS Infectious Diseases
- Accession number :
- edsair.doi...........e667cc07fd419d1c373ec4dfa2f862d8