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Streptococcus pneumoniae Capsular Polysaccharide Antigens (Serotypes 1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, and 23F) (PnPs)
- Target
- PnPs
- Molecular classification
- Polysaccharide, Bacterial Antigen, Capsular Polysaccharide
01
Overview
Streptococcus pneumoniae capsular polysaccharide antigens—especially those from key invasive disease-associated serotypes—are essential virulence factors targeted by current vaccines. Their structural diversity underlies both their role in pathogenesis and challenges/opportunities in immunization strategies against pneumococcal diseases.
- Other names
- Pneumococcal PolysaccharideS. pneumoniae Capsular PolysaccharideCPSSerotype-specific capsular polysaccharide
02
Mechanism of action
Vaccines induce serotype-specific antibody production, promoting opsonization and phagocytosis of S. pneumoniae.
03
Biological functions
Immune evasionInhibition of phagocytosisCapsule formationVirulence factor
04
Disease associations
PneumoniaMeningitisBacteremiaOtitis mediaInfection
05
Safety considerations
Hypersensitivity reactions to vaccine componentsLimited protection against non-vaccine serotypesPotential for serotype replacement
06
Interacting drugs
Pneumococcal conjugate vaccines (PCV13, PCV15, PCV20)
1 more in the full profile.
07
Biomarkers
Antibody titers against specific serotypesSerotype distribution in invasive pneumococcal disease
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