Human RNA Polymerase I-Driven Reverse Genetics for Influenza A Virus in Canine Cells
2010
We have established a human RNA polymerase I (pol I)-driven influenza virus reverse genetics (RG) system in the Madin-Darby canine kidney 33016-PF cell line, which is approved for influenza vaccine manufacture. RNA pol I polymerases are generally active only in cells of species closely related to the species of origin of the polymerases. Nevertheless, we show that a nonendogenous RNA pol I promoter drives efficient rescue of influenza A viruses in a canine cell line. Application of this system allows efficient generation of virus strains and presents an alternative approach for influenza vaccine production.
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