trivalent hemagglutinin nanoparticle influenza antigen

A **trivalent hemagglutinin nanoparticle influenza antigen** is an experimental influenza vaccine composed of nanoparticle structures displaying hemagglutinin (HA) proteins from three influenza strains (commonly H1, H3, and B lineages). The HA proteins are specifically engineered for multivalent presentation through self-assembling nanoparticles (frequently ferritin or other scaffold proteins), aiming to enhance immunogenicity by presenting high-avidity, repeated HA epitopes that stimulate robust neutralizing antibody and T-cell responses. These vaccines are typically produced using recombinant expression systems (such as baculovirus-insect cell expression), which allow for precise antigen design and rapid manufacturing. The primary mechanism is the induction of both humoral and cellular immunity against influenza, potentially providing broader protection across multiple circulating and drifted strains compared to conventional vaccines. The trivalent formulation is intended for the prevention of seasonal influenza.

Other names

trivalent HA nanoparticle vaccine