Abstract
A twin-column counter-current chromatography processes, CaptureSMB, was used for the protein A affinity capture of a monoclonal antibody (mAb). By means of sequential loading, the process improves the utilization of the stationary phase by achieving loadings much closer to the static binding capacity of the resin in comparison to batch chromatography. Using a mAb capture case study with protein A affinity chromatography, the performance and product quality obtained from CaptureSMB and batch processes were compared. The effect of the flow rate, column length and titer concentration on the process performance and product quality were evaluated. CaptureSMB showed superior performance compared to batch chromatography with respect to productivity, capacity utilization, product concentration and buffer consumption. A simplified economic evaluation showed that CaptureSMB could decrease resin costs of 10–30% depending on the manufacturing scenario.
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