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Animal Cell Culture pp 27–64Cite as

Transient Recombinant Protein Expression in Mammalian Cells

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Part of the book series: Cell Engineering ((CEEN,volume 9))

Abstract

Transient gene expression has evolved into an attractive technology for the rapid production of milligram to gram amounts of recombinant proteins. This review describes the different methods for introducing foreign DNA into suitable mammalian cells with either viral or non-viral vectors. Particular emphasis is given to non-viral transient transfection which represents meanwhile the most prominent variant due to recent progress in the resulting protein productivity. Non-viral transient transfection protocols are always based on the use of specific transfection reagents or the application of an electroporation device. The corresponding methods are compared with regard to their scale-up potential, also in consideration of potential production costs. The underlying cellular pathways of plasmid DNA incorporation, cytoplasmic release and translocation into the nucleus are important details to understand the transfection principle and further improve the technology. Problems associated with the application of transient gene expression at a larger scale are also addressed. In particular, the requirement of different cell culture media conditions for plasmid DNA complex preparation (if necessary), the transfection process itself and a high titer recombinant production need to be harmonized. Strategies to improve recombinant protein productivity by increasing the cell-specific output and/or sustaining the production phase are itemized as well. This can be accomplished by enabling cells to perform episomal plasmid replication, co-transfection with other plasmids, altering the cellular metabolism, temperature reduction, supplementation of specific production enhancers or combinations thereof. A number of examples for successful applications at pilot scale are also provided.

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Authors and Affiliations

  1. Recombinant Protein Expression Group, Helmholtz Centre for Infection Research GmbH, Inhoffenstr. 7, Braunschweig, D-38124, Germany

    Volker Jäger & Konrad Büssow

  2. Department of Biotechnology, Institute of Biochemistry, Biotechnology and Bioinformatics, Technische Universität Braunschweig, Spielmannstr. 7, Braunschweig, D-38106, Germany

    Thomas Schirrmann

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  1. Volker Jäger
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  2. Konrad Büssow
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  3. Thomas Schirrmann
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Correspondence to Volker Jäger .

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  1. University College Dublin, Dublin, Ireland

    Mohamed Al-Rubeai

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Jäger, V., Büssow, K., Schirrmann, T. (2015). Transient Recombinant Protein Expression in Mammalian Cells. In: Al-Rubeai, M. (eds) Animal Cell Culture. Cell Engineering, vol 9. Springer, Cham. https://doi.org/10.1007/978-3-319-10320-4_2

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