(191a) A Comparative Study of Protein a Membranes for the Rapid Purification of Monoclonal Antibodies
AIChE Annual Meeting
2020
2020 Virtual AIChE Annual Meeting
Separations Division
Frontiers in New Materials and Membranes for Bioseparations
Monday, November 16, 2020 - 8:00am to 8:15am
Chromatography is ubiquitous to therapeutic protein purification. When the protein is a monoclonal antibody (mAb), Protein A chromatography is used in the capture step to separate the product selectively from process impurities such as host cell proteins (HCPs), host cell DNA, viruses, charged variants, fragments, endotoxins and aggregates. Among the issues in resin-based Protein A chromatography is low throughput associated with flowrate-dependent performance. In particular, diffusion limitations require resin columns to be operated with long residence times to achieve satisfactory binding capacities.
Protein A membrane chromatography is a solution. Recent innovations in Protein A membrane chromatography have led to products with binding capacities on par with resin chromatography using residence times that are shorter by an order of magnitude or more. The objectives of this study were to provide the first preliminary comparison of all commercial Protein A membranes in terms of dynamic binding capacity, regeneration-reuse, and pressure-flow rate relationships. This presentation will report findings from a comparison of Purilogics PurexaTM-A, Gore® Protein Capture Device, Cytiva HiTrapTM Fibro Prism A, and Sartorius Sartobind® A chromatography columns.