In vivo selection of hepatocytes transduced with adeno-associated viral vectors.
A murine model for hereditary tyrosinemia Type I (HTI) was evaluated for in vivo gene therapy with adeno-associated viral (AAV) vectors expressing the enzyme fumarylacetoacetate hydrolase. Transduction of a limited number of hepatocytes was accomplished following infusion of vector into the portal circulation. Corrected hepatocytes were expanded in vivo by withdrawing a drug which prevents the accumulation of toxic metabolites. The liver was eventually repopulated with hepatocytes harboring a functional and apparently integrated AAV provirus. Recipient animals regained normal liver function and architecture and the underlying metabolic derangements were normalized. After 9 months, vector-treated animals showed benign hepatomas, whereas in untreated animals areas of marked dysplasia were present within hepatomas.[1]References
- In vivo selection of hepatocytes transduced with adeno-associated viral vectors. Chen, S.J., Tazelaar, J., Moscioni, A.D., Wilson, J.M. Mol. Ther. (2000) [Pubmed]
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