Abstract
Over the last decades, the success of advanced cell therapies and the increasing production volumes of vaccines, proteins, or viral vectors have raised the need of robust cell-based manufacturing processes for ensuring product quality and satisfying good manufacturing practice requirements. The cultivation process of cells needs to be highly controlled for improved productivity, reduced variability, and optimized bioprocesses. Cell cultures can be easily monitored using different technologies, which could deliver direct or indirect assessment of the cells' viability. Among these techniques, nuclear magnetic resonance (NMR) spectroscopy is a powerful technology that permits the evaluation and the identification of key endogenous metabolites. NMR can provide information on the cell metabolic pathways, on the bioprocesses, and is also capable to quickly test for impurities. In this study, NMR was successfully used as a technology for monitoring cell viability and expansion in different supports for cell growth (including bioreactors), to predict the bioprocess output and for the early identification of key metabolites linked to cell starvation. This investigation will allow the timely control of culture conditions and favor the optimization of the bioprocesses.
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