C - Chemistry – Metallurgy – 12 – N
Patent
C - Chemistry, Metallurgy
12
N
C12N 15/861 (2006.01) A61K 48/00 (2006.01) C12N 9/00 (2006.01) C12N 15/86 (2006.01)
Patent
CA 2157063
An animal cell is co-transfected with both a recombinant DNA viral vector which bears a promoter, a recombinase gene and a poly(A) sequence and a recombinant DNA viral vector which bears two recombinase-recongnizing sequences and which further bears an origin of replication, a promoter, a foreign gene and a poly(A) sequence, each of which is located between the two recombinase-recongnizing sequences. Thereafter, in the co-transfected animal cell, a DNA fragment containing the origin of replication, promoter, foreign gene and poly(A) sequence is excised from the vector by the action of a recombinase expressed in the another vector. The DNA fragment forms a circular DNA molecule which autonomously replicates in the co-transfected animal cell due to the origin of replication, whereby the foreign gene is continuously expressed. Accordingly, the combination of the above two DNA viral vectors wherein a gene which is defective in patients is used as the foreign gene is quite useful especially for the treatment of the patient with hereditary diseases.
Kanegae Yumi
Saito Izumu
Dainippon Sumitomo Pharma Co. Ltd.
Marks & Clerk
Sumitomo Pharmaceuticals Company Limited
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