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Updated: May 16, 2025
Rapid Antibody Glycoengineering in Chinese Hamster Ovary Cells
Published on: June 2, 2022
Improved recombinant protein expression using the 5'-untranslated region in Chinese hamster ovary cells
Huan-Yu Zhang1, Zhen-Lin Fan2, Chong Wang2
1Department of Biochemistry and Molecular Biology, Xinxiang Medical University, Xinxiang 453000, China; Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Chaoyang District, Beijing 100101, China; International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang 453000, China.
Abstract:
Chinese hamster ovary (CHO) cells are major expression platforms for the transient production of recombinant therapeutic proteins (RTPs). Most improvement strategies have focused on promoting transcriptional expression in CHO cells. However, methods for promoting the yield of RTPs through translational regulation remain unclear. In this study, we investigated characteristics of the 5'-untranslated region (UTR) that influence recombinant protein expression in CHO cells and identified sequences that have positive effects on protein expression using ribosome sequencing. Some elements and characteristics of 5'-UTR differentially affected the translation of the main open reading frame and increased recombinant protein expression by 1.5-fold in CHO cells. The findings may help relieve the bottleneck of the yield of RTPs on translation enhancement.
