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  • Anti-HA2 (H5N1)

    • Anti-HA2 (H5N1) | Gentaur

    Gentaur

    $0.00
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    SKU:
    653-IT-003-010-GEN
    Availability:
    24/48 H for Stock Items & 1 or 2 weeks for Production Items
    Weight:
    1 KGS
    Price:
    Contact info@gentaur.com for pricing

    Product Description

    Anti-HA2 (H5N1)

    Immune responses to inactivated vaccines against avian influenza are poor due in part to lack of immune memory. Adjuvants significantly increased virus neutralizing titers.

    We performed comprehensive analyses of polyclonal antibody responses following FDA-approved adjuvanted H5N1-A/Indonesia vaccine, administered in presence or absence of AS03.

    Using Whole Genome Fragment Phage Display Libraries, we observed that AS03 induced antibody epitope diversity to viral hemagglutinin (HA) and neuraminidase compared with unadjuvanted vaccine.

    Furthermore, AS03 promoted significant antibody affinity maturation to properly folded H5-HA1 (but not to HA2) domain, which correlated with neutralization titers against both vaccine and heterologous H5N1 strains.

    However, no increase in heterosubtypic cross-neutralization of Group1-H1N1 seasonal strains was observed. AS03-H5N1 vaccine also induced higher neuraminidase inhibition antibody titers.

    This study provides insight into the differential impacts of AS03 adjuvant on H5N1 vaccine-induced antibody responses that may help optimize vaccine platforms for future vaccines with improved protection against seasonal and pandemic influenza strains.

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