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Optimization of a novel expression system for recombinant protein production in CHO cells
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Optimization of a novel expression system for recombinant protein production in CHO cells
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Optimization of a novel expression system for recombinant protein production in CHO cells
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Journal Article
Optimization of a novel expression system for recombinant protein production in CHO cells
2024
Overview
Chinese hamster ovary (CHO) cells are common mammalian cell lines for expressing recombinant proteins, yet the expression level of recombinant proteins is still hindered. Vector optimization and cell line modification are the key factors to improve the expression of recombinant proteins. In this study, the vector was optimized by adding the regulatory elements Kozak and Leader to the upstream of target gene to detect the transient and stable expression of recombinant proteins. Results indicated that the expression level of target proteins with the addition of regulatory elements was significantly increased compared with the control group. In addition, the inhibition of apoptotic pathway has great potential to increase recombinant protein production, and Apaf1 protein dependent on the mitochondrial apoptosis pathway plays an important role in this respect. The knockout of apoptotic gene Apaf1 in CHO cells can also increase recombinant protein production. Therefore, the vector was optimized by adding regulatory elements, and the cell line was modified by using CRISPR/Cas9 technology to establish a novel CHO cell expression system, which remarkably improved the expression level of recombinant proteins and laid the foundation for the large-scale production of recombinant proteins.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
