Conditionally replicating viral vectors and their use
AssigneeThe Johns Hopkins University School of Medicine
InventorsBoro Dropulić, Paula M. Pitha
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Abstract
The present invention provides a conditionally replicating viral vector, methods of making, modifying, propagating and selectively packaging, and using such a vector, isolated molecules of specified nucleotide and amino acid sequences relevant to such vectors, a pharmaceutical composition and a host cell comprising such a vector, the use of such a host cell to screen drugs. The methods include the prophylactic and therapeutic treatment of viral infection, in particular HIV infection, and, thus, are also directed to viral vaccines and the treatment of cancer, in particular cancer of viral etiology. Other methods include the use of such conditionally replicating viral vectors in gene therapy and other applications.
Claims19
A method to prepare a conditionally replicating virus product vector, which method comprises:
- (a) obtaining a starting vector, which replicates only in a host cell that is permissive for replication of said starting vector;
- and
- (b) incorporating into the starting vector at least a first nucleotide sequence which adversely affects a wild-type virus, a helper virus, a helper vector, or wild-type mobile genetic element to obtain said product vector
- wherein said product vector is selectively replicated over a wild-type virus, a helper virus, a helper vector or mobile genetic element
- wherein said host cell is permissive by virtue of the presence of a wild-type virus, or helper virus, helper vector or wild-type mobile genetic element.
Dependencies are inferred from the claim text.