Purification of monomeric mAb from associated aggregates using selective desorption chromatography in hydroxyapatite systems
Selective desorption on ceramic hydroxyapatite (CHT) was implemented for the purification of monomeric monoclonal antibody (mAb) from associated aggregates and other post‐protein A step impurities. A robotic liquid handling system was employed to carry out a parallel batch screen of selective desorb...
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Published in | Biotechnology and bioengineering Vol. 108; no. 4; pp. 813 - 821 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Hoboken
Wiley Subscription Services, Inc., A Wiley Company
01.04.2011
Wiley Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | Selective desorption on ceramic hydroxyapatite (CHT) was implemented for the purification of monomeric monoclonal antibody (mAb) from associated aggregates and other post‐protein A step impurities. A robotic liquid handling system was employed to carry out a parallel batch screen of selective desorbents on a post‐protein A step mAb mixture. The effect of different phosphate concentrations was also investigated. Selective batch separations were achieved between monomeric mAb and associated aggregates/impurities. The batch screen results also established optimal mobile phase conditions for each selective desorbent. These initial batch results were then used to guide column separations, and baseline separation of monomeric mAb from associated aggregates and impurities was achieved, validating the screening results. Selective desorption also resulted in improved separations on CHT, with 100% yield of pure monomeric mAb as compared to 61% and 79%, respectively, for conventional linear and step gradient operations. This proof of concept study demonstrates selective desorption on CHT as an effective separation technique for the purification of monomeric mAb from associated aggregates and other post‐protein A step impurities in a single process step. Biotechnol. Bioeng. 2011; 108:813–821. © 2010 Wiley Periodicals, Inc. |
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Bibliography: | ArticleID:BIT22971 istex:58CE45F5CB314E90F2EB47D1340E7A2CBD1EA7C9 ark:/67375/WNG-HK2V8QBH-K NSF Grants - No. CBET-0730830; No. CBET-0933169 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0006-3592 1097-0290 1097-0290 |
DOI: | 10.1002/bit.22971 |