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Dynamic Metabolic Flux Analysis Using B-splines to Study the Effects of Temperature Shift on CHO Cell Metabolism

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Specialty Biochemistry
Date 2021 Jun 21
PMID 34150508
Citations 26
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Abstract

Metabolic flux analysis (MFA) is widely used to estimate intracellular fluxes. Conventional MFA, however, is limited to continuous cultures and the mid-exponential growth phase of batch cultures. Dynamic MFA (DMFA) has emerged to characterize time-resolved metabolic fluxes for the entire culture period. Here, the linear DMFA approach was extended using B-spline fitting (B-DMFA) to estimate mass balanced fluxes. Smoother fits were achieved using reduced number of knots and parameters. Additionally, computation time was greatly reduced using a new heuristic algorithm for knot placement. B-DMFA revealed that Chinese hamster ovary cells shifted from 37 °C to 32 °C maintained a constant IgG volume-specific productivity, whereas the productivity for the controls peaked during mid-exponential growth phase and declined afterward. The observed 42% increase in product titer at 32 °C was explained by a prolonged cell growth with high cell viability, a larger cell volume and a more stable volume-specific productivity.

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References
1.
Matasci M, Hacker D, Baldi L, Wurm F . Recombinant therapeutic protein production in cultivated mammalian cells: current status and future prospects. Drug Discov Today Technol. 2014; 5(2-3):e37-42. DOI: 10.1016/j.ddtec.2008.12.003. View

2.
Altamirano C, Illanes A, Becerra S, Cairo J, Godia F . Considerations on the lactate consumption by CHO cells in the presence of galactose. J Biotechnol. 2006; 125(4):547-56. DOI: 10.1016/j.jbiotec.2006.03.023. View

3.
Young J . Metabolic flux rewiring in mammalian cell cultures. Curr Opin Biotechnol. 2013; 24(6):1108-15. PMC: 3775942. DOI: 10.1016/j.copbio.2013.04.016. View

4.
Mahadevan R, Edwards J, Doyle 3rd F . Dynamic flux balance analysis of diauxic growth in Escherichia coli. Biophys J. 2002; 83(3):1331-40. PMC: 1302231. DOI: 10.1016/S0006-3495(02)73903-9. View

5.
Dietmair S, Timmins N, Gray P, Nielsen L, Kromer J . Towards quantitative metabolomics of mammalian cells: development of a metabolite extraction protocol. Anal Biochem. 2010; 404(2):155-64. DOI: 10.1016/j.ab.2010.04.031. View