Alternative Affinity Ligands for Immunoglobulins

Bioconjug Chem. 2017 Aug 16;28(8):2009-2030. doi: 10.1021/acs.bioconjchem.7b00335. Epub 2017 Jul 20.

Abstract

The demand for recombinant therapeutic antibodies and Fc-fusion proteins is expected to increase in the years to come. Hence, extensive efforts are concentrated on improving the downstream processing. In particular, the development of better-affinity chromatography matrices, supporting robust time- and cost-effective antibody purification, is warranted. With the advances in molecular design and high-throughput screening approaches from chemical and biological combinatorial libraries, novel affinity ligands representing alternatives to bacterial immunoglobulin (Ig)-binding proteins have entered the scene. Here, we review the design, development, and properties of diverse classes of alternative antibody-binding ligands, ranging from engineered versions of Ig-binding proteins, to artificial binding proteins, peptides, aptamers, and synthetic small-molecular-weight compounds. We also provide examples of applications for the novel affinity matrices in chromatography and beyond.

Publication types

  • Review
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Drug Design
  • Humans
  • Immunoglobulins / chemistry
  • Immunoglobulins / immunology
  • Immunoglobulins / metabolism*
  • Ligands
  • Protein Engineering

Substances

  • Immunoglobulins
  • Ligands