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Engineering of Chinese hamster ovary cells for co-overexpressing MYC and XBP1s increased cell proliferation and recombinant EPO production. Sci Rep 2023; 13:1482. [PMID: 36707606 PMCID: PMC9883479 DOI: 10.1038/s41598-023-28622-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 01/20/2023] [Indexed: 01/29/2023] Open
Abstract
Improving the cellular capacity of Chinese hamster ovary (CHO) cells to produce large amounts of therapeutic proteins remains a major challenge for the biopharmaceutical industry. In previous studies, we observed strong correlations between the performance of CHO cells and expression of two transcription factors (TFs), MYC and XBP1s. Here, we have evaluated the effective of overexpression of these two TFs on CHO cell productivity. To address this goal, we generated an EPO-producing cell line (CHOEPO) using a targeted integration approach, and subsequently engineered it to co-overexpress MYC and XBP1s (a cell line referred to as CHOCXEPO). Cells overexpressing MYC and XBP1s increased simultaneously viable cell densities and EPO production, leading to an enhanced overall performance in cultures. These improvements resulted from the individual effect of each TF in the cell behaviour (i.e., MYC-growth and XBP1s-productivity). An evaluation of the CHOCXEPO cells under different environmental conditions (temperature and media glucose concentration) indicated that CHOCXEPO cells increased cell productivity in high glucose concentration. This study showed the potential of combining TF-based cell engineering and process optimisation for increasing CHO cell productivity.
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Characterization of dynamic regulation in Chinese hamster ovary (CHO) cell cultures in the late exponential phase. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2020.107897] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Assessment of fed-batch cultivation strategies for an inducible CHO cell line. J Biotechnol 2019; 298:45-56. [DOI: 10.1016/j.jbiotec.2019.04.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 04/04/2019] [Accepted: 04/04/2019] [Indexed: 12/28/2022]
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Vergara M, Torres M, Müller A, Avello V, Acevedo C, Berrios J, Reyes JG, Valdez-Cruz NA, Altamirano C. High glucose and low specific cell growth but not mild hypothermia improve specific r-protein productivity in chemostat culture of CHO cells. PLoS One 2018; 13:e0202098. [PMID: 30114204 PMCID: PMC6095543 DOI: 10.1371/journal.pone.0202098] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 07/27/2018] [Indexed: 01/12/2023] Open
Abstract
In the biopharmaceutical sector, Chinese hamster ovary (CHO) cells have become the host of choice to produce recombinant proteins (r-proteins) due to their capacity for correct protein folding, assembly, and posttranslational modification. However, the production of therapeutic r-proteins in CHO cells is expensive and presents insufficient production yields for certain proteins. Effective culture strategies to increase productivity (qp) include a high glucose concentration in the medium and mild hypothermia (28–34 °C), but these changes lead to a reduced specific growth rate. To study the individual and combined impacts of glucose concentration, specific growth rate and mild hypothermia on culture performance and cell metabolism, we analyzed chemostat cultures of recombinant human tissue plasminogen activator (rh-tPA)-producing CHO cell lines fed with three glucose concentrations in feeding media (20, 30 and 40 mM), at two dilution rates (0.01 and 0.018 1/h) and two temperatures (33 and 37 °C). The results indicated significant changes in cell growth, cell cycle distribution, metabolism, and rh-tPA productivity in response to the varying environmental culture conditions. High glucose feed led to constrained cell growth, increased specific rh-tPA productivity and a higher number of cells in the G2/M phase. Low specific growth rate and temperature (33 °C) reduced glucose consumption and lactate production rates. Our findings indicated that a reduced specific growth rate coupled with high feed glucose significantly improves r-protein productivity in CHO cells. We also observed that low temperature significantly reduced qp, but not cell growth when dilution rate was manipulated, regardless of the glucose concentration or dilution rate. In contrast, we determined that feed glucose concentration and consumption rate were the dominant aspects of the growth and productivity in CHO cells by using multivariate analysis.
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Affiliation(s)
- Mauricio Vergara
- School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
- Institute of Chemistry, Pontificia Universidad Católica de Valparaíso, Valparaiso, Chile
| | - Mauro Torres
- School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Andrea Müller
- School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Verónica Avello
- School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
- Center of Biotechnology, Universidad Técnica Federico Santa María, Valparaíso, Chile
| | - Cristian Acevedo
- Center of Biotechnology, Universidad Técnica Federico Santa María, Valparaíso, Chile
- Institute of Physics, Universidad Técnica Federico Santa María, Valparaíso, Chile
| | - Julio Berrios
- School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Juan G. Reyes
- Institute of Chemistry, Pontificia Universidad Católica de Valparaíso, Valparaiso, Chile
| | - Norma A. Valdez-Cruz
- Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Claudia Altamirano
- School of Biochemical Engineering, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
- Regional Center for Healthy Food Studies (CREAS) R17A10001, CONICYT REGIONAL, GORE Valparaiso, Chile
- * E-mail:
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He L, Desai JX, Gao J, Hazeltine LB, Lian Z, Calley JN, Frye CC. Elucidating the Impact of CHO Cell Culture Media on Tryptophan Oxidation of a Monoclonal Antibody Through Gene Expression Analyses. Biotechnol J 2018. [DOI: 10.1002/biot.201700254] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Luhong He
- Bioprocess Research and Development, Eli Lilly and Company; Indianapolis 46285 IN USA
| | - Jairav X. Desai
- Informatics Capabilities − Research IT, Eli Lilly and Company; Indianapolis 46285 IN USA
| | - Jinxin Gao
- Statistics- Discovery/Development, Eli Lilly and Company; Indianapolis 46285 IN USA
| | - Laurie B. Hazeltine
- Bioprocess Research and Development, Eli Lilly and Company; Indianapolis 46285 IN USA
| | - Zhirui Lian
- Bioprocess Research and Development, Eli Lilly and Company; Indianapolis 46285 IN USA
| | - John N. Calley
- Tailored Therapeutics Bioinformatics, Eli Lilly and Company; Indianapolis 46285 IN USA
| | - Christopher C. Frye
- Bioprocess Research and Development, Eli Lilly and Company; Indianapolis 46285 IN USA
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Sha S, Bhatia H, Yoon S. An RNA-seq based transcriptomic investigation into the productivity and growth variants with Chinese hamster ovary cells. J Biotechnol 2018; 271:37-46. [DOI: 10.1016/j.jbiotec.2018.02.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 01/26/2018] [Accepted: 02/19/2018] [Indexed: 02/06/2023]
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7
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Orellana CA, Marcellin E, Palfreyman RW, Munro TP, Gray PP, Nielsen LK. RNA-Seq Highlights High Clonal Variation in Monoclonal Antibody Producing CHO Cells. Biotechnol J 2018; 13:e1700231. [DOI: 10.1002/biot.201700231] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 12/12/2017] [Indexed: 01/08/2023]
Affiliation(s)
- Camila A. Orellana
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland; Brisbane QLD 4072 Australia
| | - Esteban Marcellin
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland; Brisbane QLD 4072 Australia
- Metabolomics Australia (Queensland Node), The University of Queensland; Brisbane QLD 4072 Australia
| | - Robin W. Palfreyman
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland; Brisbane QLD 4072 Australia
| | - Trent P. Munro
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland; Brisbane QLD 4072 Australia
| | - Peter P. Gray
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland; Brisbane QLD 4072 Australia
| | - Lars K. Nielsen
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland; Brisbane QLD 4072 Australia
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark; 2800 Kgs, Lyngby Denmark
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