Pseudo-adenovirus vectors

Details Pseudo-adenovirus vectors Pseudo-adenovirus vectors

C - Chemistry, Metallurgy

12

N

C12N 15/861 (2006.01) A61K 48/00 (2006.01) A61P 1/18 (2006.01) A61P 11/00 (2006.01) C07K 14/705 (2006.01) C07K 14/755 (2006.01) C12N 9/64 (2006.01) C12N 15/12 (2006.01) C12N 15/57 (2006.01)

Patent

CA 2592997

Gene Therapy vectors, which are especially useful for cystic fibrosis, and methods for using the vectors are disclosed. In preferred embodiments, the vectors are adenovirus-based. Advantages of adenovirus-based vectors for gene therapy are that they appear to be relatively safe and can be manipulated to encode the desired gene product and at the same time are inactivated in terms of their ability to replicate in a normal lytic viral life cycle. Additionally, adenovirus has a natural tropism for airway epithelia. Therefore, adenovirus-based vectors are particularly preferred for respiratory gene therapy applications such as gene therapy for cystic fibrosis. In one embodiment, the adenovirus-based gene therapy vector comprises an adenovirus 2 serotype genome in which the EIa and EIb regions of the genome, which are involved in early stages of viral replication have been deleted and replaced by genetic material of interest (e.g., DNA encoding the cystic fibrosis transmembrane regulator protein). In another embodiment, the adenovirus-based therapy vector is a pseudo-adenovirus (PAV). PAVs contain no potentially harmful viral genes, have a theoretical capacity for foreign material of nearly 36 kb, may be produced in reasonably high titers and maintain the tropism of the parent adenovirus for dividing and non-dividing human target cell types.

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