Abstract
Affinity chromatography is the method of choice for biomolecule separation and isolation with highly specific target recognition; it is ideally suited to the purification of immunotherapeutic proteins (i.e., mAbs). Conventional affinity purification protocols are based on natural immunoglobulin (Ig)-binding proteins, which are expensive to produce, labile, unstable, and exhibit lot-to-lot variability. Biological ligands are now being replaced by cost-effective, synthetic ligands, derived from the concepts of rational design and combinatorial chemistry, aided by in silico approaches. In this chapter, we describe a new synthetic procedure for the development of affinity ligands for immunoglobulins based on the multicomponent Ugi reaction. The lead ligand developed herein is specific for the IgG-Fab fragment and mimics Protein L (PpL), an IgG-binding protein isolated from Peptostreptococcus magnus strains and usually used for the purification of antibodies and their fragments.
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Acknowledgment
The authors would like to thank Dr. Jonathan M. Haigh for permission to reproduce figures from his PhD thesis at the University of Cambridge (2008).
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El Khoury, G., Rowe, L.A., Lowe, C.R. (2012). Biomimetic Affinity Ligands for Immunoglobulins Based on the Multicomponent Ugi Reaction. In: Zanders, E. (eds) Chemical Genomics and Proteomics. Methods in Molecular Biology, vol 800. Humana Press. https://doi.org/10.1007/978-1-61779-349-3_5
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DOI: https://doi.org/10.1007/978-1-61779-349-3_5
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