Protein purification by multidimensional liquid chromatography

Area of Science:

• Biochemistry
• Analytical Chemistry
• Chemical Engineering

Background:

• Protein purification is a critical step in biopharmaceutical development.
• Traditional methods are often labor-intensive, expensive, and difficult to scale.
• Multi-dimensional separation techniques offer enhanced selectivity and efficiency.

Purpose of the Study:

• To review the concept and applications of multi-dimensional liquid chromatography (MDLC) for protein purification.
• To categorize MDLC approaches into two main strategies: collinear and coupled columns.
• To highlight the potential of MDLC in improving the scalability and cost-effectiveness of protein purification processes.

Main Methods:

• Review of existing literature on multi-dimensional chromatography.
• Classification of MDLC systems into two categories: single column with multiple separation mechanisms and on-line coupled columns with different materials.
• Discussion of selectivity modulation via mobile phase and material selection.

Main Results:

• MDLC systems can be designed using collinear separation mechanisms within a single column or by physically coupling multiple columns.
• Novel chromatographic packings aim for high selectivity and modulated separation characteristics.
• On-line coupled columns offer a discrete 2D separation system, particularly attractive for large-scale purification with "on-off" chromatography.

Conclusions:

• MDLC techniques, including advanced materials and column coupling, promise significant improvements in protein purification.
• The development of on-line MDLC systems can streamline complex purification processes, reducing time and cost.
• MDLC offers a versatile platform for achieving high-purity proteins essential for biopharmaceutical applications.