Vaccinia virus, recombinant protein expression infection

MacDonald, M.R., Takeda, J., Rice, C.M. etal. (1989). Multiple tachykinins are produced and secreted upon post-translational processing of the three substance P precursor proteins, alpha-, beta-, and gamma-preprotachykinin. Expression of the preprotachykinins in AtT-20 cells infected with vaccinia virus recombinants. J. Biol. Chem. 264, 15578-15592. 

Vaccinia virus is a large double-stranded DNA virus that infects many types of mammalian cells and some invertebrate cells. Its replication cycle is confined to the cytoplasm and can be divided into an early phase and a late phase. The late phase is characterized by the synthesis of structural proteins and enzymes that are packaged into progeny virions. Expression of foreign genes from recombinant vaccinia viruses takes advantage of promoters that are active during the late phase in order to maximize yields of the protein of interest. Several features make the vaccinia virus system... 

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