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- W2015486355 abstract "During the last decade, recombinant AAVs have become of increasing interest for gene therapy. Clinical trials have been conducted following promising in vivo evaluations, thus leading laboratories to adapt their production systems for larger and higher quality demands. Classical transfection protocols seem difficult and cumbersome to adapt to a bioreactor scale. The use of stable producer cells appears as an attractive alternative, as this system requires only a single infection step to induce rAAV production. Furthermore, the switch to a serum-free medium is an interesting strategy to increase the biosafety level to satisfy clinical grade requirements for gene therapy products. Here, we have combined both approaches and evaluated different rAAV producer clones in a serum-free medium. We first evaluated the cell growth in a serum-free medium and then did a partial optimisation of the medium composition to obtain vector yields as close as possible to the yields obtained in a classical serum containing medium. Different helper viruses, multiplicity of infection, times of infection and harvest have been compared in small scale cultures in order to determine the optimal settings which were then transferred and evaluated in suspension cultures in spinner flasks. The yields obtained in this system were similar to or at most 2 times lower than those obtained in a serum-containing medium. The scale-up of such a production system as well as the use of high cell density perfusion culture systems will probably lead to considerably higher yields than those obtained in a classical process." @default.
- W2015486355 created "2016-06-24" @default.
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- W2015486355 date "2005-09-01" @default.
- W2015486355 modified "2023-10-08" @default.
- W2015486355 title "Evaluation of a Serum-free Medium for the Production of rAAV-2 using HeLa Derived Producer Cells" @default.
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- W2015486355 doi "https://doi.org/10.1007/s10616-005-5361-z" @default.
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