Premium
Purification of monoclonal antibodies, IgG1, from cell culture supernatant by use of metal chelate convective interaction media monolithic columns
Author(s) -
Rajak Poonam,
Vijayalakshmi M. A.,
Jayaprakash N. S.
Publication year - 2012
Publication title -
biomedical chromatography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 65
eISSN - 1099-0801
pISSN - 0269-3879
DOI - 10.1002/bmc.2721
Subject(s) - chemistry , chromatography , chelation , monoclonal antibody , elution , metal ions in aqueous solution , metal , bovine serum albumin , nuclear chemistry , antibody , inorganic chemistry , organic chemistry , immunology , biology
Monoclonal antibodies (MAbs) have diverse applications in diagnostics and therapeutics. The recent advancement in hybridoma technology for large‐scale production of MAbs in bioreactors demands rapid and efficient purification methods. Conventional affinity purification systems have drawbacks of low flow rates and denaturation of antibodies owing to harsh elution conditions. Here, we attempted purification of MAbs by use of a high‐throughput metal–chelate methacrylate monolithic system. Monolithic macroporous convective interaction media–iminodiacetate (CIM‐IDA) disks immobilized with four different metal ions (Cu 2+ , Ni 2+ , Zn 2+ and Co 2+ ) were used and evaluated for purification of anti‐human serum albumin IgG1 mouse MAbs from cell culture supernatant after precipitation with 50% ammonium sulfate. Elution with 10 mM imidazole in the equilibration buffer (25 mM MMA = MOPS (Morpholino propane sulfonic acid) + MES (Morpholino ethane sulfonic acid) + Acetate + 0.5 M NaCl, pH 7.4) resulted in a purification of 25.7 ± 2.9‐fold and 32.5 ± 2.6‐fold in experiments done using Zn 2+ and Co 2+ metal ions, respectively. The highest recovery of 85.4 ± 1.0% was obtained with a CIM‐IDA‐Zn(II) column. SDS–PAGE, ELISA and immuno‐blot showed that the antibodies recovered were pure, with high antigen‐binding efficiency. Thus, metal chelate CIM monoliths could be a potential alternative to conventional systems for fast and efficient purification of MAbs from the complex cell culture supernatant. Copyright © 2012 John Wiley & Sons, Ltd.