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- W2006636970 abstract "Chinese hamster ovary (CHO) cells are the most commonly used mammalian host for large-scale commercial production of therapeutic monoclonal antibodies (mAbs). Chemically defined media are currently used for CHO cell-based mAb production. An adequate supply of nutrients, especially specific amino acids, is required for cell growth and mAb production, and chemically defined fed-batch processes that support rapid cell growth, high cell density, and high levels of mAb production is still challenging. Many studies have highlighted the benefits of various media designs, supplements, and feed addition strategies in cell cultures. In the present study, we used a strategy involving optimization of a chemically defined feed medium to improve mAb production. Amino acids that were consumed in substantial amounts during a control culture were added to the feed medium as supplements. Supplementation was controlled to minimize accumulation of waste products such as lactate and ammonia. In addition, we evaluated supplementation with tyrosine, which has poor solubility, in the form of a dipeptide or tripeptide to improve its solubility. Supplementation with serine, cysteine, and tyrosine enhanced mAb production, cell viability, and metabolic profiles. A cysteine-tyrosine-serine tripeptide showed high solubility and produced beneficial effects similar to those observed with the free amino acids and with a dipeptide in improving mAb titers and metabolic profiles." @default.
- W2006636970 created "2016-06-24" @default.
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- W2006636970 date "2015-07-01" @default.
- W2006636970 modified "2023-09-26" @default.
- W2006636970 title "Optimization of chemically defined feed media for monoclonal antibody production in Chinese hamster ovary cells" @default.
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- W2006636970 doi "https://doi.org/10.1016/j.jbiosc.2014.11.022" @default.
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