Infective protein delivery system

摘要

A DNA construct is provided comprising a first DNA encoding the gamma -interferon signal peptide linked to the 5' end of a second DNA encoding a human protein, e.g. a cytokine such as TNF, not naturally linked to said signal peptide, wherein said signal peptide has the property of augmenting the secretion of said human protein from a mammalian cell. Such a DNA construct may be a vector such as a retroviral vector. Also provided are virions carrying a DNA vector of the invention or a reverse transcript thereof.