ArticleBioprocess and biosystems engineering2024
Synergistic promotion of transient transgene expression in CHO cells by PDI/XBP-1s co-transfection and mild hypothermia.
Article in Bioprocess and biosystems engineering, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.
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Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.
- Pooled it
- Leveraging ANXA1 to enhance recombinant protein yields in CHO cells: A UPR-Mediated bioprocessing approach.Synthetic and systems biotechnology · 2026Article
- Cell Engineering for Increasing Production of Recombinant Proteins in Mammalian Cells.BioDrugs : clinical immunotherapeutics, biopharmaceuticals and gene therapy · 2026Review
- Using transcription and translation regulators to improve recombinant protein expression in CHO cells.Acta biochimica et biophysica Sinica · 2025Article
- Recent Advances in Engineering the Unfolded Protein Response in Recombinant Chinese Hamster Ovary Cell Lines.International journal of molecular sciences · 2025Review
- Bioprocess biomarker identification and diagnosis for industrial mAb production based on metabolic profiling and multivariate data analysis.Bioprocess and biosystems engineering · 2025Article
- Improvement strategies for transient gene expression in mammalian cells.Applied microbiology and biotechnology · 2024Review
- Novel and effective screening system for recombinant protein production in CHO cells.Scientific reports · 2024Article
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Authors and funding
9 authors at 1 institution in 1 country.
Funding
Abstract
Transient gene expression system is an important tool for rapid production of recombinant proteins in Chinese hamster ovary (CHO) cells. However, their low productivity is the main hurdle to overcome. An effective approach through which to obtain high protein yield involves targeting transcriptional, post-transcriptional events (PTEs), and culture conditions. Here, we investigated the effects of protein disulfide isomerase (PDI) and spliced X-box binding protein 1 (XBP-1s) co-overexpression combined with mild hypothermia on the transient yields of recombinant proteins in CHO cells. The results showed that the gene of interest (GOI) and the PDI/XBP-1s helper vector at a co-transfection ratio of 10:1 could obviously increase transient expression level of recombinant protein in CHO cells. However, PDI/XBP-1s overexpression had no significance effect on the mRNA levels of the recombinant protein, suggesting that it targeted PTEs. Moreover, the increased production was due to the enhancing of cell specific productivity, not related to cell growth, viability, and cell cycle. In addition, combined PDI/XBP-1s co-overexpression and mild hypothermia could further improve Adalimumab expression, compared to the control/37 °C and PDI/XBP-1s/37 °C, the Adalimumab volume yield of PDI/XBP-1s/33 °C increased by 203% and 142%, respectively. Mild hypothermia resulted in 3.52- and 2.33-fold increase in the relative mRNA levels of PDI and XBP-1s, respectively. In conclusion, the combination of PDI/XBP-1s overexpression and culture temperature optimization can achieve higher transient expression of recombinant protein, which provides a synergetic strategy to improve transient production of recombinant protein in CHO cells.
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