Abstract
Chinese hamster ovary (CHO) cells are the commonly used cell lines for producing recombinant therapeutic proteins (RTPs) because they possess post-translational modifications similar to human cells. Culture media are necessary for cell growth, and their quality affects the yields and quality of RTPs. Due to safety concerns for the complex purification of RTPs, the development of serum-free media (SFM) is necessary for CHO cells. To meet the need for CHO cells with higher cell density and RTP productivity with consistent product quality in large-scale suspension cultures, the optimization of SFM through adding some enzymatic animal-free hydrolysates (AFHs) is preferred. The AFHs can improve cell culture performance and product yield of RTPs without affecting their quality. Here, the effect and mechanism of various AFHs in improving CHO cell culture performance and protein expression are reviewed.
Key points
• AFHs that improve the recombinant protein yield of CHO cells are reviewed.
• AFHs improve recombinant protein yield via influencing cell performance.
• The AFHs do not affect the quality of recombinant protein in CHO cells.
• AFHs can provide nutrients, block cell cycle, and reduce oxidative stress.
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This work was funded by the Key Scientific Research Project of Higher Education of Henan Province, China (No. 22A310009).
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QD and XW wrote and edited the manuscript, TW and XZ investigated and edited the manuscript, TW designed the content of the review, and XW funded the manuscript.
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Du, Q., Zhang, X., Wang, T. et al. Effects and mechanisms of animal-free hydrolysates on recombination protein yields in CHO cells. Appl Microbiol Biotechnol 106, 7387–7396 (2022). https://doi.org/10.1007/s00253-022-12229-x
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DOI: https://doi.org/10.1007/s00253-022-12229-x