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Hong JK, Nargund S, Lakshmanan M, Kyriakopoulos S, Kim DY, Ang KS, Leong D, Yang Y, Lee DY. Comparative phenotypic analysis of CHO clones and culture media for lactate shift. J Biotechnol 2018; 283:97-104. [DOI: 10.1016/j.jbiotec.2018.07.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 07/22/2018] [Accepted: 07/31/2018] [Indexed: 10/28/2022]
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Biochemical and metabolic engineering approaches to enhance production of therapeutic proteins in animal cell cultures. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.04.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Pereira S, Kildegaard HF, Andersen MR. Impact of CHO Metabolism on Cell Growth and Protein Production: An Overview of Toxic and Inhibiting Metabolites and Nutrients. Biotechnol J 2018; 13:e1700499. [DOI: 10.1002/biot.201700499] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 12/21/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Sara Pereira
- The Novo Nordisk Foundation Center for Biosustainability; Technical University of Denmark; 2800 Kgs. Lyngby Denmark
- Department of Biotechnology and Biomedicine Technical University of Denmark; 2800 Kgs. Lyngby Denmark
| | - Helene Faustrup Kildegaard
- The Novo Nordisk Foundation Center for Biosustainability; Technical University of Denmark; 2800 Kgs. Lyngby Denmark
| | - Mikael Rørdam Andersen
- Department of Biotechnology and Biomedicine Technical University of Denmark; 2800 Kgs. Lyngby Denmark
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Gupta P, Hourigan K, Jadhav S, Bellare J, Verma P. Effect of lactate and pH on mouse pluripotent stem cells: Importance of media analysis. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2016.11.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Pan X, Streefland M, Dalm C, Wijffels RH, Martens DE. Selection of chemically defined media for CHO cell fed-batch culture processes. Cytotechnology 2017; 69:39-56. [PMID: 27900626 PMCID: PMC5264622 DOI: 10.1007/s10616-016-0036-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 10/26/2016] [Indexed: 01/17/2023] Open
Abstract
Two CHO cell clones derived from the same parental CHOBC® cell line and producing the same monoclonal antibody (BC-G, a low producing clone; BC-P, a high producing clone) were tested in four basal media in all possible combinations with three feeds (=12 conditions) in fed-batch cultures. Higher amino acid feeding did not always lead to higher mAb production. The two clones showed differences in cell physiology, metabolism and optimal medium-feed combinations. During the phase transitions of all cultures, cell metabolism showed a shift represented by lower specific consumption and production rates, except for the specific glucose consumption rate in cultures fed by Actifeed A/B. The BC-P clone fed by Actifeed A/B showed a threefold cell volume increase and an increase of the specific consumption rate of glucose in the stationary phase. Since feeding was based on glucose this resulted in accumulation of amino acids for this feed, while this did not occur for the poorer feed (EFA/B). The same feed also led to an increase of cell size for the BC-G clone, but to a lesser extent.
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Affiliation(s)
- Xiao Pan
- Bioprocess Engineering, Wageningen University, PO Box 16, 6700 AA, Wageningen, The Netherlands.
| | - Mathieu Streefland
- Bioprocess Engineering, Wageningen University, PO Box 16, 6700 AA, Wageningen, The Netherlands
| | - Ciska Dalm
- Synthon Biopharmaceuticals BV, Upstream Process Development, PO Box 7071, 6503 GN, Nijmegen, The Netherlands
| | - René H Wijffels
- Bioprocess Engineering, Wageningen University, PO Box 16, 6700 AA, Wageningen, The Netherlands
- Faculty of Biosciences and Aquaculture, Nord University, 8049, Bodø, Norway
| | - Dirk E Martens
- Bioprocess Engineering, Wageningen University, PO Box 16, 6700 AA, Wageningen, The Netherlands
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An omics approach to rational feed. J Biotechnol 2016; 234:127-138. [DOI: 10.1016/j.jbiotec.2016.07.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 07/12/2016] [Accepted: 07/29/2016] [Indexed: 12/23/2022]
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Del Val IJ, Polizzi KM, Kontoravdi C. A theoretical estimate for nucleotide sugar demand towards Chinese Hamster Ovary cellular glycosylation. Sci Rep 2016; 6:28547. [PMID: 27345611 PMCID: PMC4921913 DOI: 10.1038/srep28547] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 06/03/2016] [Indexed: 01/18/2023] Open
Abstract
Glycosylation greatly influences the safety and efficacy of many of the highest-selling recombinant therapeutic proteins (rTPs). In order to define optimal cell culture feeding strategies that control rTP glycosylation, it is necessary to know how nucleotide sugars (NSs) are consumed towards host cell and rTP glycosylation. Here, we present a theoretical framework that integrates the reported glycoproteome of CHO cells, the number of N-linked and O-GalNAc glycosylation sites on individual host cell proteins (HCPs), and the carbohydrate content of CHO glycosphingolipids to estimate the demand of NSs towards CHO cell glycosylation. We have identified the most abundant N-linked and O-GalNAc CHO glycoproteins, obtained the weighted frequency of N-linked and O-GalNAc glycosites across the CHO cell proteome, and have derived stoichiometric coefficients for NS consumption towards CHO cell glycosylation. By combining the obtained stoichiometric coefficients with previously reported data for specific growth and productivity of CHO cells, we observe that the demand of NSs towards glycosylation is significant and, thus, is required to better understand the burden of glycosylation on cellular metabolism. The estimated demand of NSs towards CHO cell glycosylation can be used to rationally design feeding strategies that ensure optimal and consistent rTP glycosylation.
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Affiliation(s)
- Ioscani Jimenez Del Val
- School of Chemical &Bioprocess Engineering, University College Dublin, Belfield campus, Dublin 4, Ireland.,Centre for Process Systems Engineering, Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Karen M Polizzi
- Department of Life Sciences, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K.,Centre for Synthetic Biology and Innovation, Department of Life Sciences, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - Cleo Kontoravdi
- Centre for Process Systems Engineering, Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
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Toussaint C, Henry O, Durocher Y. Metabolic engineering of CHO cells to alter lactate metabolism during fed-batch cultures. J Biotechnol 2015; 217:122-31. [PMID: 26603123 DOI: 10.1016/j.jbiotec.2015.11.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 11/03/2015] [Accepted: 11/13/2015] [Indexed: 01/19/2023]
Abstract
Recombinant yeast pyruvate carboxylase (PYC2) expression was previously shown to be an effective metabolic engineering strategy for reducing lactate formation in a number of relevant mammalian cell lines, but, in the case of CHO cells, did not consistently lead to significant improvement in terms of cell growth, product titer and energy metabolism efficiency. In the present study, we report on the establishment of a PYC2-expressing CHO cell line producing a monoclonal antibody and displaying a significantly altered lactate metabolism compared to its parental line. All clones exhibiting strong PYC2 expression were shown to experience a significant and systematic metabolic shift toward lactate consumption, as well as a prolonged exponential growth phase leading to an increased maximum cell concentration and volumetric product titer. Of salient interest, PYC2-expressing CHO cells were shown to maintain a highly efficient metabolism in fed-batch cultures, even when exposed to high glucose levels, thereby alleviating the need of controlling nutrient at low levels and the potential negative impact of such strategy on product glycosylation. In bioreactor operated in fed-batch mode, the higher maximum cell density achieved with the PYC2 clone led to a net gain (20%) in final volumetric productivity.
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Affiliation(s)
- Cécile Toussaint
- Département de Biochimie et médecine moléculaire, Université de Montréal, Montréal, Québec H3C 3J7, Canada; Life Sciences, NRC Human Health Therapeutics Portfolio, Building Montreal-Royalmount, National Research Council Canada, Montréal, Québec H4P 2R2, Canada.
| | - Olivier Henry
- Département de Génie Chimique, École Polytechnique de Montréal, C.P. 6079, Succ. Centre-ville, Montréal, Québec H3C 3A7, Canada.
| | - Yves Durocher
- Département de Biochimie et médecine moléculaire, Université de Montréal, Montréal, Québec H3C 3J7, Canada; Life Sciences, NRC Human Health Therapeutics Portfolio, Building Montreal-Royalmount, National Research Council Canada, Montréal, Québec H4P 2R2, Canada.
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Kyriakopoulos S, Kontoravdi C. A framework for the systematic design of fed-batch strategies in mammalian cell culture. Biotechnol Bioeng 2014; 111:2466-76. [PMID: 24975682 DOI: 10.1002/bit.25319] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 06/10/2014] [Accepted: 06/17/2014] [Indexed: 01/20/2023]
Abstract
A methodology to calculate the required amount of amino acids (a.a.) and glucose in feeds for animal cell culture from monitoring their levels in batch experiments is presented herein. Experiments with the designed feeds on an antibody-producing Chinese hamster ovary cell line resulted in a 3-fold increase in titer compared to batch culture. Adding 40% more nutrients to the same feed further increases the yield to 3.5 higher than in batch culture. Our results show that above a certain threshold there is no linear correlation between nutrient addition and the integral of viable cell concentration. In addition, although high ammonia levels hinder cell growth, they do not appear to affect specific antibody productivity, while we hypothesize that high extracellular lactate concentration is the cause for the metabolic shift towards lactate consumption for the cell line used. Overall, the performance of the designed feeds is comparable to that of a commercial feed that was tested in parallel. Expanding this approach to more nutrients, as well as changing the ratio of certain amino acids as informed by flux balance analysis, could achieve even higher yields.
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Affiliation(s)
- Sarantos Kyriakopoulos
- Centre for Process Systems Engineering, Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, United Kingdom
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Templeton N, Lewis A, Dorai H, Qian EA, Campbell MP, Smith KD, Lang SE, Betenbaugh MJ, Young JD. The impact of anti-apoptotic gene Bcl-2∆ expression on CHO central metabolism. Metab Eng 2014; 25:92-102. [DOI: 10.1016/j.ymben.2014.06.010] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 06/24/2014] [Accepted: 06/27/2014] [Indexed: 11/27/2022]
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Yuk IH, Zhang JD, Ebeling M, Berrera M, Gomez N, Werz S, Meiringer C, Shao Z, Swanberg JC, Lee KH, Luo J, Szperalski B. Effects of copper on CHO cells: Insights from gene expression analyses. Biotechnol Prog 2014; 30:429-42. [DOI: 10.1002/btpr.1868] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 12/18/2013] [Indexed: 12/11/2022]
Affiliation(s)
- Inn H. Yuk
- Early Stage Cell Culture; Genentech, 1 DNA Way; South San Francisco CA 94080
| | | | | | | | - Natalia Gomez
- Early Stage Cell Culture; Genentech, 1 DNA Way; South San Francisco CA 94080
| | - Silke Werz
- Pharma Technical Development Europe; Roche Penzberg 82377 Germany
| | | | - Zhixin Shao
- Pharma Technical Development Europe; Roche Penzberg 82377 Germany
| | - Jeffrey C. Swanberg
- Delaware Biotechnology Inst., University of Delaware; 15 Innovation Way Newark DE 19711
| | - Kelvin H. Lee
- Delaware Biotechnology Inst., University of Delaware; 15 Innovation Way Newark DE 19711
| | - Jun Luo
- Vacaville Manufacturing Sciences and Technology; Genentech, 1000 New Horizons Way Vacaville CA 95688
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