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Proceedings of the international conference on innovations in energy engineering & cleaner production
2022, proceedings of peer-reviewed scientific conference contributions (international and foreign conferences)

Keywords: energetics, renewable energy sources, production, alternative energy sources, environmental protection
Published in DKUM: 27.10.2023; Views: 357; Downloads: 13
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Phenotyping of mammalian CHO cell line in fed-batch bioprocess by intensified and classical procedure : master's thesis
Matic Košir, 2023, master's thesis

Abstract: Nowadays, pharmaceutical industry is striving to find more biologically relevant solutions and to move from synthetic to biological products. Biopharmaceuticals represent an emerging sector in the pharmaceutical industry and are useful for a wide range of indications, including oncology and rheumatology. The development and optimisation of bioprocesses at laboratory scale is crucial for process understanding and translation into production. Bioprocess development often begins with comparison of several potential clones to be characterized, tested in low-volume cultures with different media or other variables, and then evaluated for growth, productivity, and consistency. The purpose of this master's thesis is to review changes in growth curves, substrate consumption, yield, and product quality of a mammalian cell line when substituting glucose as the main carbon source with alternative energy sources. This master thesis presents an attempt to adapt a mammalian CHO cell line to alternative energy sources. A comparison of the cultivation with maintenance of the CHO mammalian cell line by an intensified and a classical process is also shown. Substrate requirements at different time points of the process were monitored using phenotypic microarrays. Based on the obtained and analyzed results of the phenotypic microarrays, we tried to optimize the cell culture supplementation strategy. We have tried to use small molecules to facilitate adaptation to alternative energy sources. Our results showed that growing CHO cell culture on an alternative energy source-maltose and cell reprogramming with small molecules affects the quality of the product. Trends in cell growth, substrate consumption, by-product excretion and final product concentration are similar between the reference cell cultures and those pre-treated with small molecules. We found that adapting a mammalian CHO cell line to an alternative energy source is a challenging process that would need to be carried out over a long period of time.
Keywords: CHO cells, bioprocess, phenotyping, alternative energy sources, glycan mapping
Published in DKUM: 05.10.2023; Views: 221; Downloads: 77
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