Author Archives: Malcolm Pluskal

Development of a Next Generation Cellulose-Based High Capacity rProtein A Capture Resin for High Throughput MAb Purification in Both Batch and Continuous Purification Formats

A new product development approach will be described for the affinity capture of Mab’s from cell culture materials employing a novel base stable rProtein A ligand. Using a stable cellulose base bead with excellent flow properties coupled with a novel immobilization methodology, a next generation rProtein A capture resin has been developed with a high level of antibody binding capacity. The new Cellufine™ rProtein A resin shows C20% dynamic binding capacity (DBC) of >50 mg/ mL with polyclonal antibodies at…

Affinity Chromatography Applications with Single-Domain Antibodies

Figure 1:  Current downstream processing strategies for recombinant proteins often require multiple chromatographic steps, which may lead to poor overall product yields. Product purification can be especially difficult when a target protein displays reduced stability, has isoforms or misprocessed variants, or needs to be purified from a complex mixture containing a high level of impurities. Through highly specific antibody–antigen based interactions, affinity chromatography brings significant technical advantage to these protein purification challenges. Developed to tackle such challenges, CaptureSelect™ technology is…