Target intelligence / Profile preview

Neisseria meningitidis Group C Capsular Polysaccharide (NmC CPS)

Target: NmC CPS
Molecular classification: Polysaccharide, Capsular Polysaccharide, Bacterial Antigen

Overview

The Neisseria meningitidis group C capsular polysaccharide is a high-molecular-weight carbohydrate polymer that forms the outer capsule of serogroup C strains of *N. meningitidis*. It is composed of α(2→9)-linked N-acetylneuraminic acid residues. The capsule is a major virulence factor, enabling the bacterium to evade host immune defenses. It is also a key target for vaccine development, with conjugate vaccines proving highly effective in preventing serogroup C meningococcal disease by eliciting protective antibodies.

Other names: Group C Capsular PolysaccharideSerogroup C Capsular PolysaccharideN. meningitidis Group C PolysaccharideNmC Polysaccharide

Mechanism of action

Antibody-mediated opsonization and complement activation leading to bacterial clearance. Conjugate vaccines elicit T-cell dependent B cell response, inducing long-term immunological memory.

Biological functions

Immune evasionVirulence factorAntigen presentationCapsule formation

Disease associations

MeningitisSepticemiaInvasive Meningococcal DiseaseInfection

Safety considerations

Rare adverse reactions to vaccines (e.g., injection site reactions, fever)Potential for capsule switching/serogroup replacement following widespread vaccination

Interacting drugs

Conjugate Vaccines (e.g., MenC conjugate vaccine)

1 more in the full profile.

Biomarkers

Anti-NmC CPS antibody titers (vaccine efficacy)Presence of serogroup C N. meningitidis in clinical samples

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