The GS System™ uses the Glutamine synthetase (GS) gene as a selectable marker for the expression of recombinant proteins in mammalian cells, especially NS0 and CHO cells. The system has been shown to have significant advantages with respect to speed and efficiency of cell line development and has resulted in high productivity for antibodies and other recombinant proteins.
Application
GS Supplement 50X has been used to as a supplement for culture media to grow GS-NS0 mouse myeloma cells.[1]
The glutamine synthetase (GS) system is used to express recombinant proteins from mammalian cells. Glutamine-dependent cells transfected with a glutamine synthetase gene can be selectively grown in a suitable glutamine-deficient medium.
Energy-based culture medium design for biomanufacturing optimization: A case study in monoclonal antibody production by GS-NS0 cells.
Quiroga-Campano A L, et al.
Metabolic engineering, 47, 21-30 (2018)
Doyle, A., et al.
Cell and Tissue Culture: Laboratory Procedures, 27D, 3-3 (1999)
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