recombinant poxviruses with foreign DNA in essential regions

摘要

Defective poxviruses that lack a function imparted by an essential region of its parental poxvirus are provided for protein production and vaccination. A DNA polynucleotide encoding a protein is inserted into the defective poxvirus and placed under transcriptional control of a promoter. The defective poxvirus is viable when the lost function of the essential region is complemented by a host cell, transgenic animal or helper virus.