USE OF FLOW-CYTROMETRIC ANALYSIS TO OPTIMIZE CELL BANKING STRATEGIES FOR CHO CELLS

Production of biopharmaceuticals from CHO cells requires generation of master-, working- and post-production cell banks of high quality, partly under GMP conditions. An optimal cryopreservation strategy is needed for each new production cell line, particularly with regard to the desire to establish...

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Hauptverfasser:	FIEDER JUERGEN, KAUFMANN HITTO, OTTO RALF
Format:	Patent
Sprache:	eng
Schlagworte:	BEER BIOCHEMISTRY CHEMISTRY COMPOSITIONS OR TEST PAPERS THEREFOR CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL ORENZYMOLOGICAL PROCESSES ENZYMOLOGY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEICACIDS OR MICROORGANISMS METALLURGY MICROBIOLOGY MUTATION OR GENETIC ENGINEERING PHYSICS PROCESSES OF PREPARING SUCH COMPOSITIONS SPIRITS TESTING VINEGAR WINE
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Beschreibung
Zusammenfassung:	Production of biopharmaceuticals from CHO cells requires generation of master-, working- and post-production cell banks of high quality, partly under GMP conditions. An optimal cryopreservation strategy is needed for each new production cell line, particularly with regard to the desire to establish production processes that are completely devoid of serum or even any animal components and to ensure robust thaw performance for reliable production. Here we describe a novel strategy employing flow cytometric (FC) analysis of Annexin V-stained cells for high-throughput characterization of CHO cell banks. Our data show that this method enables evaluation of a cryopreservation procedure just 6 h after thaw.