Affinity chromatography of proteins on monolithic columns

Area of Science:

• Biochemistry
• Chromatography
• Biotechnology

Background:

• Monolithic stationary phases are advantageous for fast mass transfer processes.
• High-performance liquid chromatography (HPLC) on monoliths, especially in bioaffinity mode, excels at separating diverse biological macromolecules and supramolecular systems.
• Applications include liquid chromatography, solid-phase synthesis, microarrays, and flow-through enzyme reactors.

Purpose of the Study:

• To present applications of commercially available macroporous monoliths in modern affinity processing.
• To detail original methods for isolating specific biomolecules.
• To demonstrate the potential of multifunctional monolithic columns for complex separations.

Main Methods:

• Utilized macroporous monolithic columns for affinity separation.
• Developed original methods for antibody isolation and fractionation.
• Employed a combination of stacked monolithic columns with different affinity functionalities for multifunctional fractionation.

Main Results:

• Successfully isolated monospecific antibodies from rabbit blood sera.
• Achieved simultaneous affinity separation of protein G and serum albumin from human serum.
• Isolated recombinant protein G and tissue plasminogen activator from E. coli and CHO cell lysates/supernatants, respectively.
• Demonstrated a novel method for multifunctional fractionation of polyclonal antibody pools using stacked monolithic columns.

Conclusions:

• Macroporous monoliths are effective for modern affinity processing and biomolecule isolation.
• Original methods enable efficient separation of specific antibodies and recombinant proteins.
• Multifunctional fractionation using stacked monolithic columns is a practical and valuable technique for biotechnology.