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• W4224884375 abstract "During a recent manufacturing campaign for a monoclonal antibody using a fed-batch process, poor cell culture performance was observed across two manufacturing sites with similar scales and equipment. Root cause analysis indicated that the poor cell culture performance was linked to the production basal media. Genealogy of the precursor raw materials used in the media revealed that a particular lot of Poloxamer 188 (P188) was the common link to the poor-performing media lots. P188 serves a critical role in protecting cells against shear in cell culture bioprocesses. However, the small-scale studies suggested that the poor cell culture performance was cytostatic in nature rather than being caused due to lack of shear protection. Several P188 lots were tested analytically using SEC-MS and RP-LC-MS methods and a unique low molecular weight species was identified in the suspect lot of poloxamer. The impurity was identified to be polypropylene oxide (PPO), a reaction intermediate in P188 synthesis. Spiking studies with PPO further confirmed its cytostatic nature. This case study highlights yet another scenario where lot-to-lot variability continues to impact bioprocesses and re-emphasizes the need for robust analytical and cell-culture raw material screening methods." @default.
• W4224884375 created "2022-04-27" @default.
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• W4224884375 date "2022-06-01" @default.
• W4224884375 modified "2023-10-13" @default.
• W4224884375 title "Low-molecular-weight impurity in Poloxamer 188 responsible for atypical cell culture performance for mAb production" @default.
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• W4224884375 doi "https://doi.org/10.1016/j.jbiotec.2022.04.008" @default.
• W4224884375 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35483475" @default.
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