Target intelligence / Profile preview

Poliovirus Antigens (Types I-III) (N/A)

Target: N/A
Molecular classification: Viral structural protein, Capsid protein, Antigen

Overview

Poliovirus antigens refer to the structural proteins (VP1, VP2, VP3, VP4) present on the surface of the three poliovirus serotypes (PV-1, PV-2, and PV-3). These antigens are critical for immune recognition and are the targets of neutralizing antibodies induced by polio vaccines. Key antigenic sites (Site I, Site II, Site III) on the capsid proteins vary slightly between serotypes, influencing immune responses and cross-protection. Vaccines utilize either inactivated whole-virus (IPV) or live attenuated strains (OPV) to stimulate immunity against these antigens.

Other names: Polio virus surface antigensEnterovirus C antigensPV-1 antigensPV-2 antigensPV-3 antigensN-AgIN-AgIIN-AgIII

Mechanism of action

Vaccines stimulate the production of neutralizing antibodies against the poliovirus capsid proteins, preventing viral entry and infection.

Biological functions

Viral entryImmune recognitionAntibody neutralizationVaccine-induced immunity

Disease associations

PoliomyelitisParalytic diseaseViral infection

Safety considerations

Vaccine-derived poliovirus (VDPV) emergenceReversion to neurovirulence (OPV)Rare cases of vaccine-associated paralytic poliomyelitis (VAPP)

Interacting drugs

Oral Polio Vaccine (OPV)

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