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Target intelligence / Profile preview
Neisseria meningitidis Serogroup W Polysaccharide Capsule (NmW CPS)
- Target
- NmW CPS
- Molecular classification
- Polysaccharide, Capsular Polysaccharide, Antigen
01
Overview
The polysaccharide capsule of *Neisseria meningitidis* serogroup W is a key virulence factor composed of alternating sialic acid and galactose units. It protects the bacterium from host immune defenses, making it essential for invasive disease. It is a target for conjugate vaccines designed to prevent meningococcal disease.
- Other names
- Serogroup W CapsuleW PolysaccharideNmW Capsule
02
Mechanism of action
Vaccine-induced antibody production targeting capsular polysaccharide, leading to opsonization and complement-mediated killing of bacteria.
03
Biological functions
Immune evasionComplement inhibitionPhagocytosis inhibitionVirulence factorAntigen presentation
04
Disease associations
Invasive meningococcal diseaseMeningitisSepticemia
05
Safety considerations
Vaccine-related adverse reactions (rare)Potential for antigenic variation/capsular switchingEfficacy may be reduced in certain populations (e.g., infants)
06
Interacting drugs
Quadrivalent conjugate vaccines (A, C, Y, W)
2 more in the full profile.
07
Biomarkers
Capsular polysaccharide levels in CSF/serum (diagnostic)Antibody titers against serogroup W (vaccine efficacy)Presence of cps genes (diagnostic)
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