FIELD:
biotechnology.SUBSTANCE: method for producing a recombinant adeno-associated
virus (rAAV) rAAVrh74.MHCK7.microdystrophin in adherent mammalian cells by propagating cells in a
hybrid seed
bioreactor system is described, comprising: (a) culturing adherent cells under adherent conditions with a first
growth medium containing serum in container N-2; (b) removing adherent cells from the first medium; (c) inoculating adherent cells from step (b) into a second medium that does not contain serum or contains serum at a concentration lower than in the first medium in container N-1; (d) culturing adherent cells in container N-1 under suspension conditions; (e) inoculating adherent cells from step (d) into a third medium in a
bioreactor for growing adherent cultures; and (f) transfecting the adherent cells with a transgenic
plasmid containing the rAAVrh74.MHCK7.microdystrophin construct, a
plasmid containing the AAV rep
gene and the AAV cap
gene, and an adenoviral helper
plasmid, to produce rAAV containing the human microdystrophin
nucleotide sequence of SEQ ID NO:1 and the MHCK7
promoter sequence of SEQ ID NO: 7.EFFECT: expanding the scope of treatments for
muscular dystrophy.18 cl, 8 tbl, 11 ex