Development of Methacrylate Monolithic Columns for Depletion of Human Serum Albumin (HSA)

Biological samples often consist of a main component, such as albumin in serum, and many other constituents, present in smaller quantities, but nevertheless of high importance in biological systems. When detection of the low-abundance molecules is needed, the main component could interfere with the analyte, complicating the analysis or even making it impossible. In such cases a possible approach is to remove the interfering main component from the sample before the analysis.

Monolithic columns (CIM) are a great foundation to build affinity chromatography methods, as they offer fast flow rates and can be modified to accommodate various ligands. We selected two most promising approaches for oriented binding of antibodies to the monolithic support. One approach was to bind antibodies to a protein A (pA) column with consequent crosslinking of the protein complex. The other approach was to chemically activate antibodies and bind them selectively to hydrazide-modified (HDZ) monolith surface.

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