Two step capture and purification of IgG2 using multicolumn countercurrent solvent gradient purification (MCSGP).

Area of Science:

• Biotechnology
• Biopharmaceutical Manufacturing
• Chromatographic Purification

Background:

• Monoclonal antibody (mAb) purification is critical for biopharmaceutical development.
• Current purification processes often involve multiple chromatography steps, increasing complexity and cost.
• Optimizing purification strategies is essential for efficient and scalable mAb production.

Purpose of the Study:

• To develop and evaluate a streamlined two-step chromatography process for mAb purification.
• To compare the performance of the developed two-step process against a benchmark three-step process.
• To assess the efficiency and potential of Multicolumn Countercurrent Solvent Gradient Purification (MCSGP) in mAb capture.

Main Methods:

• Development of a two-step purification strategy using cation exchange MCSGP for capture.
• Screening of various chromatographic materials for polishing in batch mode.
• Characterization of clarified cell culture supernatant (cCCS) to inform process design.
• Comparison of the two-step process with a benchmark three-step (Protein A, anion, cation exchange) process.

Main Results:

• A two-step process utilizing cation exchange MCSGP capture and multi-modal anion exchange polishing consistently yielded high-purity mAbs.
• The developed two-step process demonstrated comparable purity and yield to the benchmark three-step process.
• The MCSGP capture step showed significant advantages over classical batch processing in terms of performance.

Conclusions:

• A simplified two-step chromatography process can achieve high-purity mAb purification, meeting stringent specifications.
• The MCSGP technique offers a promising and efficient alternative for mAb capture, potentially reducing process steps and costs.
• This optimized process holds potential for improving the overall efficiency and scalability of biopharmaceutical manufacturing.