Membrane ion-exchange chromatography for process-scale antibody purification.

Area of Science:

• Biotechnology
• Chemical Engineering
• Bioprocessing

Background:

• Large-scale production of recombinant monoclonal antibodies requires cost-effective, high-throughput purification methods.
• Traditional ion-exchange chromatography columns are widely used but can be limiting in terms of speed and cost.
• Membrane adsorbers present an alternative technology for bioseparation processes.

Purpose of the Study:

• To evaluate the feasibility of using ion-exchange membrane adsorbers as a replacement for traditional ion-exchange columns in monoclonal antibody purification.
• To assess the performance of cation-exchange membranes in a bind-and-elute mode for antibody purification.
• To explore the utility of anion-exchange membranes in a flow-through mode for impurity removal.

Main Methods:

• Commercially available cation-exchange membranes were tested.
• Breakthrough capacities were determined under varying flow rates and layer configurations.
• Anion-exchange membranes were considered for flow-through impurity removal applications.

Main Results:

• Cation-exchange membranes did not demonstrate current economic or process advantages over columns for bind-and-elute antibody purification.
• Process and economic constraints limit the applicability of cation-exchange membranes at industrial scales.
• Anion-exchange membranes show potential for effectively removing impurities like DNA, host cell proteins, and viruses in a flow-through mode.

Conclusions:

• Cation-exchange membrane adsorbers are not currently a viable alternative to ion-exchange columns for large-scale antibody purification using bind-and-elute strategies.
• Anion-exchange membrane adsorbers in a flow-through mode represent a promising alternative for the clearance of specific impurities in biopharmaceutical manufacturing.
• Further development may enhance the applicability of membrane adsorber technology in antibody purification processes.