alexa A packaging cell line for lentivirus vectors.
Microbiology

Microbiology

Journal of Antivirals & Antiretrovirals

Author(s): Kafri T, van Praag H, Ouyang L, Gage FH, Verma IM

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Abstract Lentivirus vectors can transduce dividing and nondividing cells. Using three-plasmid transient transfections, high-titer (>10(9) IU/ml) recombinant lentivirus vectors pseudotyped with vesicular stomatitis virus G (VSV-G) protein can be generated (T. Kafri et al., Nat. Genet. 17:314-317, 1997; H. Miyoshi et al., Proc. Natl. Acad. Sci. USA 94:10319-10323, 1997; L. Naldini et al., Science 272:263-267, 1996). The recombinant lentiviruses can efficiently infect brain, liver, muscle, and retinal tissue in vivo. Furthermore, the transduced tissues demonstrated long-term expression of reporter genes in immunocompetent rodents. We now report the generation of a tetracycline-inducible VSV-G pseudotyped lentivirus packaging cell line which can generate virus particles at titers greater than 10(6) IU/ml for at least 3 to 4 days. The vector produced by the inducible cell line can be concentrated to titers of 10(9) IU/ml and can efficiently transduce nondividing cells in vitro and in vivo. The availability of a lentivirus packaging cell line will significantly facilitate the production of high-titer lentivirus vectors for gene therapy and study of human immunodeficiency virus biology.
This article was published in J Virol and referenced in Journal of Antivirals & Antiretrovirals

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