West Nile virus virion antigens (WNV antigens)

West Nile virus (WNV) virion antigens consist of the structural proteins that form the physical particle of the virus, primarily the envelope (E), membrane (M), and capsid (C) proteins. The E protein is the principal surface glycoprotein and serves as the primary target for neutralizing antibodies, as it mediates viral attachment to host cell receptors and subsequent membrane fusion within the endosome. The M protein is involved in the maturation of the virus particle, while the C protein packages the viral RNA genome. In a clinical context, these antigens are the focus of vaccine development and monoclonal antibody therapies aimed at preventing or treating West Nile fever and its severe neurological complications, such as encephalitis and meningitis. Therapeutic strategies typically involve blocking the E protein's ability to interact with host cells or using recombinant versions of these proteins to prime the immune system. Understanding the structural configuration of these antigens is critical for overcoming challenges such as cross-reactivity with other flaviviruses and the potential for antibody-dependent enhancement of infection.

Other names

West Nile virus structural proteinsWNV E proteinWNV M proteinWNV C proteinWest Nile virus envelope proteinWest Nile virus membrane proteinWest Nile virus capsid protein

Neutralization of viral particles by binding to the envelope protein to prevent receptor attachment and membrane fusion; induction of protective humoral and cellular immune responses through vaccination.