A method of producing a packaged DNA sequence is disclosed. In one
embodiment, the method comprises the steps of: (a) selecting a DNA
sequence to be packaged and a papillomaviral capsid sequence, wherein the
DNA sequence to be packaged is between 7 Kb-8.5 Kb, (b) co-transfecting
the products of step (a) into transfectable cells, wherein the DNA
sequence is packaged, and (c) purifying packaged particles.