Abstract
Nonpathogenic fowl adenoviruses (FAdVs) are amenable for engineering multivalent vaccine platforms due to large stretches of nonessential DNA sequences in their genomes. We describe the generation of FAdV-9-based vaccine platforms by targeted homologous recombination in an infectious clone (pPacFAdV-9 or wild type FAdmid) containing the entire viral genome in a cosmid vector. The viral DNA is subsequently released from the cosmid by restriction enzyme digestion followed by transfection in a chicken hepatoma cell line (CH-SAH). Virus is harvested, propagated, and verified for foreign gene expression.
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