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. 2003 Jul;8(1):151-7.
doi: 10.1016/s1525-0016(03)00123-0.

In vitro selection of viral vectors with modified tropism: the adeno-associated virus display

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In vitro selection of viral vectors with modified tropism: the adeno-associated virus display

Luca Perabo et al. Mol Ther. 2003 Jul.
Free article

Abstract

Improving the efficiency and specificity of gene vectors is critical for the success of gene therapy. In an effort to generate viral mutants with controlled tropism we produced a library of adeno-associated virus (AAV) clones with randomly modified capsids and used it for the selection of receptor-targeting mutants. After several rounds of selection on different cell lines that were resistant to infection by wild-type (wt) AAV, infectious mutants were harvested at high titers. These mutants transduced target cells with an up to 100-fold increased efficiency, in a receptor-specific manner and without interacting with the primary receptor for wt AAV. The results demonstrate for the first time that a combinatorial approach based on a eukaryotic virus library allows one to generate efficient, receptor-specific targeting vectors with desired tropism.

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