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Virology 2005 Dec 5;343(1):128-40

Identification and preliminary characterization of vaccinia virus (Dryvax) antigens recognized by vaccinia immune globulin.

Jones-Trower A, Garcia A, Meseda CA, He Y, Weiss C, Kumar A, Weir JP, Merchlinsky M

Merchlinsky M, US FDA, Lab DNA Viruses, Div Viral Prod, Ctr Biol Evaluat & Res, HFM-457,1401 Rockville Pike, Rockville, MD 20852 USA US FDA, Lab DNA Viruses, Div Viral Prod, Ctr Biol Evaluat & Res, Rockville, MD 20852 USA


Using vaccinia immune globulin (VIG), a high-titer antibody preparation from immunized subjects, we demonstrate that the humoral immune response in humans is directed against numerous antigens in the Dryvax vaccine strain. Western blot and immunoprecipitation analyses revealed highly antigenic proteins associated with both the extracellular enveloped virus and intracellular mature virus forms. The modified vaccinia virus Ankara (MVA), a new generation smallpox vaccine that is attenuated for replication in humans, expresses most, but not all, of the major vaccinia antigens recognized by antibodies in VIG, lacking the highly antigenic protein corresponding to the A-type inclusion body protein. Since new-generation smallpox vaccines such as MVA will require extensive comparison to traditional smallpox vaccines in animal models of immunogenicity and protection, we compared the vaccinia virus antigens recognized by VIG to those recognized by sera from Dryvax and MVA immunized mice. The humoral immune response in immunized mice is qualitatively similar to that in humans.

Category: Journal Article
PubMed ID: #16165184
Includes FDA Authors from Scientific Area(s): Biologics
Entry Created: 2011-10-04 Entry Last Modified: 2012-08-29