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. 1994 Jul;7(3):362-9.
doi: 10.1038/ng0794-362.

Inactivation of E2a in recombinant adenoviruses improves the prospect for gene therapy in cystic fibrosis

Y Yang  1 , F A Nunes, K Berencsi, E Gönczöl, J F Engelhardt, J M Wilson
Affiliations

Inactivation of E2a in recombinant adenoviruses improves the prospect for gene therapy in cystic fibrosis

Y Yang et al. Nat Genet. 1994 Jul.

Abstract

Although first generation recombinant adenoviruses, deleted of sequences spanning E1a and E1b, have been useful for in vivo applications of gene therapy, expression of the recombinant gene has been transient and often associated with the development of inflammation. We show that with first generation adenovirus-mediated gene transfer to the mouse lung, viral proteins are expressed leading to destructive cellular immune responses and repopulation of the lung with nontransgene containing cells. Second generation E1 deleted viruses further crippled by a temperature sensitive mutation in the E2a gene were associated with substantially longer recombinant gene expression and less inflammation. Stable expression of human CF transmembrane conductance regulator has been achieved in lungs of CF mice instilled with a second generation virus.

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