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  4. Hyperosmolarity enhances transient recombinant protein yield in Chinese hamster ovary cells
 
research article

Hyperosmolarity enhances transient recombinant protein yield in Chinese hamster ovary cells

Zhang, Xiaowei
•
Garcia, Isabel Fernandez
•
Baldi, Lucia  
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2010
Biotechnology Letters

The effect of hyperosmolarity on transient recombinant protein production in Chinese hamster ovary (CHO) cells was investigated. Addition of 90 mM NaCl to the production medium ProCHO5 increased the volumetric yield of recombinant antibody up to 4-fold relative to transfection in ProCHO5 alone. Volumetric yields up to 50 mg l(-1) were achieved in a 6 day batch culture of 3 l. In addition, hyperosmolarity reduced cell growth and increased cell size. The addition of salt to cultures of transiently transfected CHO cells is a simple and cost-effective method to increase TGE yields in this host.

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