Bioanalytical

Development of an automated method for monoclonal antibodies purification and analysis

Oct 15 2009

Author: Wim Decrop, Gurmil Gendeh, and Remco Swart on behalf of Thermo Fisher Scientific Chromatography and Mass Spectrometry

Free to read

This article has been unlocked and is ready to read.

Download

Two major problems in biotherapeutics are aggregation of and the presence of variants of active pharmaceutical ingredients. These product-related substances can have different efficacy than the main product and may cause serious side effects, for example, anti-drug-antibody formation. Protein aggregates are mostly the consequence of suboptimal production, purification or handling conditions.

This article discusses the development of an automated solution for purification and separation (by ion exchange or sizeexclusion chromatography) of antibodies in a single method. In this process the autosampler of the HPLC was configured to performs the injection, high volume fraction collection, and reinjection.

During various stages in the development of biopharmaceuticals, purification, and analytical characterisation of the product are required. In the early phase of process optimisation of recombinant antibodies, a large number of samples must be screened for titer, aggregation, and protein variants.

These protein aggregates and variants of the active pharmaceutical ingredient can have different efficacies than the main product and may cause serious side effects, for example, antidrug- antibody formation. Protein aggregates are mostly the consequence of suboptimal production, purification, or handling conditions (temperature or pH). In the purification of antibodies, a protein affinity separation is generally the first step.

Affinity chromatography on protein A or G columns typically yields a purity of more than 95% in a single step. While the purification on affinity columns yields information on the titer of the product, it is unselective with respect to related substances.To verify the sample purity or antibody quality, techniques, such as ion exchange chromatography (IEX) or size-exclusion chromatography (SEC) are needed. SEC provides the necessary selectivity to identify agglomerates and size-based variations of the main component. Ion exchange stationary phases provide good selectivity for separation of charge variants of the protein biopharmaceutical. The variations may be very subtle or small and finding the optimal chromatographic conditions requires optimization. This article discusses an automated solution for purification followed by a separation (IEX or SEC) of antibodies using the UltiMate® 3000 Titanium HPLC system (Figure.1). In this process, multiple protein separation steps are performed automatically.

The autosampler performs the injection, high-volume fraction collection, and reinjection of the collected fractions for analysis.

Free to read

This article has been unlocked and is ready to read.

Download


Digital Edition

Chromatography Today - Buyers' Guide 2022

October 2023

In This Edition Modern & Practical Applications - Accelerating ADC Development with Mass Spectrometry - Implementing High-Resolution Ion Mobility into Peptide Mapping Workflows Chromatogr...

View all digital editions

Events

Korea Lab 2024

Apr 23 2024 Kintex, South Korea

Korea Chem 2024

Apr 23 2024 Seoul, South Korea

AOCS Annual Meeting & Expo

Apr 28 2024 Montreal, Quebec, Canada

SETAC Europe

May 05 2024 Seville, Spain

ChemUK 2024

May 15 2024 Birmingham, UK

View all events