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Updated: Jun 13, 2025

Efficient Mammalian Cell Expression and Single-step Purification of Extracellular Glycoproteins for Crystallization
Published on: December 23, 2015
Using endoplasmic reticulum engineering to improve recombinant protein production in CHO cells
Junhe Zhang1, Weifeng Wang1, Xi Zhang2
1Institutes of Health Central Plains, Xinxiang Key Laboratory for Tumor Drug Screening and Targeted Therapy, Xinxiang Medical University, Xinxiang 453003, China; International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang 453003, China.
Chinese hamster ovary (CHO) cells are key for producing therapeutic proteins. This review explores endoplasmic reticulum (ER) engineering strategies to overcome ER stress and improve protein secretion, maximizing production yields.
Area of Science:
- Biotechnology
- Cell Biology
- Protein Engineering
Background:
- Chinese hamster ovary (CHO) cells are the primary hosts for recombinant therapeutic protein (RTP) production.
- Despite advancements, insufficient protein secretion and endoplasmic reticulum (ER) stress limit RTP yields in CHO cells.
- Understanding and mitigating ER stress is crucial for enhancing biopharmaceutical manufacturing.
Purpose of the Study:
- To review the role of the ER in RTP production within CHO cells.
- To explore ER engineering strategies for improving RTP yield.
- To discuss ER-related approaches and future directions for maximizing protein production.
Main Methods:
- Literature review of ER function in protein production.
- Analysis of current ER engineering techniques for CHO cells.
- Discussion of strategies to optimize ER folding and degradation pathways.
Main Results:
- ER stress and secretion limitations are significant bottlenecks in CHO cell-based RTP production.
- ER engineering offers promising strategies to enhance protein yield.
- Optimizing ER pathways can lead to improved recombinant protein manufacturing.
Conclusions:
- Targeting ER stress and optimizing ER function are critical for advancing RTP production in CHO cells.
- Further research into ER engineering tools and strategies is needed.
- Enhanced ER management holds significant potential for biopharmaceutical development.
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