3D-liquid chromatography as a complex mixture characterization tool for knowledge-based downstream process development.
Knowledge-based development of chromatographic separation processes requires efficient techniques to determine the physicochemical properties of the product and the impurities to be removed. These characterization techniques are usually divided into approaches that determine molecular properties, such as charge, hydrophobicity and size, or molecular interactions with auxiliary materials, commonly in the form of adsorption isotherms. In this study we demonstrate the application of a three-dimensional liquid chromatography approach to a clarified cell homogenate containing a therapeutic enzyme. Each separation dimension determines a molecular property relevant to the chromatographic behavior of each component. Matching of the peaks across the different separation dimensions and against a high-resolution reference chromatogram allows to assign the determined parameters to pseudo-components, allowing to determine the most promising technique for the removal of each impurity. More detailed process design using mechanistic models requires isotherm parameters. For this purpose, the second dimension consists of multiple linear gradient separations on columns in a high-throughput screening compatible format, that allow regression of isotherm parameters with an average standard error of 8%. © 2016 American Institute of Chemical Engineers Biotechnol. Prog., 32:1283-1291, 2016.
Dept. of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ, Delft, The Netherlands.
Alexander T
AT
Hanke
Dept. of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ, Delft, The Netherlands.
Eleni
E
Tsintavi
Dept. of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ, Delft, The Netherlands.
Maria Del Pilar
MD
Ramirez Vazquez
Dept. of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ, Delft, The Netherlands.
Luuk A M
LA
van der Wielen
Dept. of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ, Delft, The Netherlands.
Peter D E M
PD
Verhaert
Synthon Biopharmaceuticals B.V., Microweg 22, 6503 GN, Nijmegen, Nijmegen, The Netherlands. m.ottens@tudelft.nl.
Michel H M
MH
Eppink
DSM Biotechnology Center, Alexander Fleminglaan 1, 2613 AX, Delft, The Netherlands.
Emile J A X
EJ
van de Sandt
Dept. of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ, Delft, The Netherlands.
Marcel
M
Ottens
D000327:Adsorption; D000465:Algorithms; D002853:Chromatography, Liquid; D057166:High-Throughput Screening Assays; D006863:Hydrogen-Ion Concentration; D057927:Hydrophobic and Hydrophilic Interactions; D010316:Particle Size; D011506:Proteins / Q000737:chemistry*
D011506:Proteins
feedstock characterization; host cell proteins; multi-dimensional chromatography; process development