Abstract
Drosophila melanogaster Schneider 2 (S2) cells have been increasingly used as a suitable expression system for the production of different recombinant proteins, and the employment of bioreactors for large-scale culture is an important tool for this purpose. In this work, Drosophila S2 cells producing the rabies virus glycoprotein RVGP were cultivated in bioreactor, employing a serum-free medium, aiming an improvement in cell growth and in glycoprotein production. To overcome cell growth limitation commonly observed in stirred flasks, different experiments in bioreactor were performed, in which some system modifications were carried out to attain the desired goal. The study showed that this cell line is considerably sensitive to hydrodynamic forces, and a high cell density (about 16.0 × 106 cells mL−1) was only obtained when Pluronic F68® percentage was increased to 0.6% (w/v). Despite ammonium concentration affected RVGP production, and also cell growth, an elevated amount of the target protein was obtained, attaining 563 ng 10−7 cells.
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This work was supported by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES, Brasília, Brazil), Fundação de Amparo a Pesquisa do Estado de São Paulo (FAPESP Grant Nos. 02/09482-3 and 03/00675-6, São Paulo, Brazil), Instituto Butantan (São Paulo, Brazil) and Instituto de Pesquisas Tecnológicas (São Paulo, Brazil).
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Ângela M. Moraes is recipient of a CNPq fellowship.
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Galesi, A.L.L., Aguiar, M.A., Astray, R.M. et al. Growth of recombinant Drosophila melanogaster Schneider 2 cells producing rabies virus glycoprotein in bioreactor employing serum-free medium. Cytotechnology 57, 73–81 (2008). https://doi.org/10.1007/s10616-008-9139-y
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DOI: https://doi.org/10.1007/s10616-008-9139-y