Engineering of a vaccinia virus bacterial artificial chromosome in Escherichia coli by bacteriophage lambda-based recombination |
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Authors: | Domi Arban Moss Bernard |
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Institution: | Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 4 Center Drive, Bethesda, Maryland 20892-0445, USA. |
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Abstract: | The large capacity of vaccinia virus (VAC) for added DNA, cytoplasmic expression and broad host range make it a popular choice for gene delivery, despite the burdensome need for multiple plaque purifications to isolate recombinants. Here we describe how a bacterial artificial chromosome (BAC) containing the entire VAC genome can be engineered in Escherichia coli by homologous recombination using bacteriophage lambda-encoded enzymes. The engineered VAC genomes can then be used to produce clonally pure recombinant viruses in mammalian cells without the need for plaque purification. |
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