Abstract: Recombinant viral vectors such as AAV vectors designed with expression cassettes that approach the natural packaging capacity of the virus, such as AAV are provided. The recombinant viral vectors reduce residual plasmid DNA impurities.

Abstract: The invention provides viral vector formulations and methods of uses thereof for delivery of transgenes or therapeutic nucleic acids to human subjects. The formulations include a vector and suitable amounts of empty capsids, viral genome-containing capsids, or viral capsid proteins which are optionally chemically or structurally modified and which bind to neutralizing anti-AAV antibodies thereby reducing or preventing antibody-mediated clearance of the vector, but still allowing the genome-containing (therapeutic) vector to transduce target cells and achieve therapeutic gene transfer.

Abstract: Recombinant viral vectors such as AAV vectors designed with expression cassettes that approach the natural packaging capacity of the virus, such as AAV are provided. The recombinant viral vectors reduce residual plasmid DNA impurities.

Abstract: In accordance with the present invention, a method for increasing the yield of rLV vector particles comprising a trans gene encoding a therapeutic protein or fragment thereof is disclosed. In one approach, cells are transfected with plasmids encoding the necessary components for rLV production using a calcium chloride transfection mix at pH 7.1 wherein the calcium chloride and plasmids form a complex which is added to the cells at a constant speed. The cells are then incubated for a suitable time period wherein virus particle media is collected at least twice during the incubation period and stored in a cold storage unit, thereby reducing virus inactivation.

Abstract: The invention provides viral vector formulations and methods of uses thereof for delivery of transgenes or therapeutic nucleic acids to human subjects. The formulations include a vector and suitable amounts of empty capsids, viral genome-containing capsids, or viral capsid proteins which are optionally chemically or structurally modified and which bind to neutralizing anti-AAV antibodies thereby reducing or preventing antibody-mediated clearance of the vector, but still allowing the genome-containing (therapeutic) vector to transduce target cells and achieve therapeutic gene transfer.