alexa Stability of recombinant protein production in the GS-NS0 expression system is unaffected by cryopreservation.
Bioinformatics & Systems Biology

Bioinformatics & Systems Biology

Journal of Proteomics & Bioinformatics

Author(s): Barnes LM, Bentley CM, Dickson AJ

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Abstract Mammalian cells form a very important part of the repertoire of production systems available to scientists involved in the production of recombinant proteins. During the production of therapeutic proteins it is vital for regulatory approval of products that no phenotypic or genetic changes are observed in the cell line or product. As part of the generation and development of therapeutic protein production, cell lines have to be frozen at various stages to create cell banks. If cryopreservation and revival of frozen stocks were to give rise to any phenotypic changes in the cells, this would again be detrimental to the further development of that particular cell line. This study uses one of the most industrially important expression systems, the GS-NS0 expression system, to examine the effect of cryopreservation on the growth and productivity profile of cell lines that exhibit differential degrees of stability during prolonged (production) culture periods. Results show that cryopreservation and revival procedures do not alter the stability characteristics of cell lines. This type of information is of great value in definition of protocols for cell line development. This article was published in Biotechnol Prog and referenced in Journal of Proteomics & Bioinformatics

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