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- W3136110067 abstract "An increasing number of non-mAb recombinant proteins are being developed today. These biotherapeutics provide greater purification challenges where multiple polishing steps may be required to meet final purity specifications or the process steps may require extensive optimization. Recent studies have shown that activated carbon can be employed in downstream purification processes to selectively separate host cell proteins (HCPs) from monoclonal antibodies (mAb). However, the use of activated carbon as a unit operation in a cGMP purification process is relatively new. As such, the goal of this work is to provide guidance on development approaches, insight into operating parameters and solution conditions that can impact HCP removal, as well as further investigate the mechanism of removal by using mass spectrometry. In this work, activated carbon was evaluated to remove HCPs in the downstream purification process of a recombinant enzyme. Impact of process placement, flux (or residence time), and mass loading on HCP removal was investigated. Feasibility of high throughput screening (HTS) using loose activated carbon was assessed to reduce the amount of therapeutic protein needed and enable testing of a larger number of solution conditions. Finally, mass spectrometry was used to determine the population of HCPs removed by activated carbon. Our work demonstrates that activated carbon can be used effectively in downstream processes of biopharmaceuticals to remove HCPs (up to a 3 log10 reduction) and that an HTS format can be implemented to reduce material demands by up to 23x and allow for process optimization of this adsorbent for purification purposes." @default.
- W3136110067 created "2021-03-29" @default.
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- W3136110067 date "2021-04-01" @default.
- W3136110067 modified "2023-09-23" @default.
- W3136110067 title "Development of an activated carbon filtration step and high throughput screening method to remove host cell proteins from a recombinant enzyme process" @default.
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- W3136110067 doi "https://doi.org/10.1002/btpr.3151" @default.
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