Multiple pneumococcal cell-surface and structural antigens

Multiple pneumococcal cell-surface and structural antigens refer to a collection of highly conserved proteins and toxins expressed by Streptococcus pneumoniae, such as Pneumolysin (Ply), Pneumococcal surface protein A (PspA), and Pneumococcal surface protein C (PspC) (Source: PubMed: 18248312). These antigens play vital roles in the pathogen's ability to colonize the host, evade the immune system, and cause invasive diseases like pneumonia, meningitis, and sepsis (Source: PubMed: 18446593). Unlike traditional vaccines that target the variable capsular polysaccharides, protein-based approaches targeting these antigens aim to provide broad, serotype-independent protection (Source: PubMed: 25613614). Drugs and vaccines interacting with these targets work by eliciting humoral and cellular immune responses that neutralize bacterial toxins and enhance the clearance of the bacteria via opsonophagocytosis (Source: PubMed: 18248312). This target group is a primary focus for next-generation pneumococcal vaccines intended to overcome the limitations of serotype replacement seen with current conjugate vaccines (Source: GSK.com).

Other names

Pneumococcal surface proteinsStreptococcus pneumoniae antigensPneumococcal protein antigensPneumococcal cell-surface proteins

Induction of active immunity through the production of antibodies that neutralize toxins, inhibit bacterial adhesion, and promote opsonophagocytosis of Streptococcus pneumoniae (Source: PubMed: 18248312).