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Sachio S, Likozar B, Kontoravdi C, Papathanasiou MM. Computer-aided design space identification for screening of protein A affinity chromatography resins. J Chromatogr A 2024; 1722:464890. [PMID: 38598892 DOI: 10.1016/j.chroma.2024.464890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/05/2024] [Accepted: 04/07/2024] [Indexed: 04/12/2024]
Abstract
The rapidly growing market of monoclonal antibodies (mAbs) within the biopharmaceutical industry has incentivised numerous works on the design of more efficient production processes. Protein A affinity chromatography is regarded as one of the best processes for the capture of mAbs. Although the screening of Protein A resins has been previously examined, process flexibility has not been considered to date. Examining performance alongside flexibility is crucial for the design of processes that can handle disturbances arising from the feed stream. In this work, we present a model-based approach for the identification of design spaces, enhanced by machine learning. We demonstrate its capabilities on the design of a Protein A chromatography unit, screening five industrially relevant resins. The computational results favourably compare to experimental data and a resin performance comparison is presented. An improvement on the computational time by a factor of 300,000 is achieved using the machine learning aided methodology. This allowed for the identification of 5,120 different design spaces in only 19 h.
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Affiliation(s)
- Steven Sachio
- Sargent Centre for Process Systems Engineering, Imperial College London, SW7 2AZ, UK; Department of Chemical Engineering, Imperial College London, SW7 2AZ, UK
| | - Blaž Likozar
- Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Ljubljana 1001, Slovenia
| | - Cleo Kontoravdi
- Sargent Centre for Process Systems Engineering, Imperial College London, SW7 2AZ, UK; Department of Chemical Engineering, Imperial College London, SW7 2AZ, UK
| | - Maria M Papathanasiou
- Sargent Centre for Process Systems Engineering, Imperial College London, SW7 2AZ, UK; Department of Chemical Engineering, Imperial College London, SW7 2AZ, UK.
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2
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Koehnlein W, Kastenmueller E, Meier T, Treu T, Falkenstein R. The beneficial impact of kosmotropic salts on the resolution and selectivity of Protein A chromatography. J Chromatogr A 2024; 1715:464585. [PMID: 38183781 DOI: 10.1016/j.chroma.2023.464585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 01/08/2024]
Abstract
During the manufacturing of therapeutic antibodies, effective Protein A chromatography as initial column step is crucial to simplify the remaining purification effort for subsequent polishing steps. This is particularly relevant for molecules with high impurity content so that desired product purity can be attained. The present study demonstrates beneficial effects on impurity removal when applying kosmotropic salts, e.g., sodium sulfate or sodium chloride, in the elution phase. Initially, a screen using negative linear pH gradient elution evaluated the impact of the kosmotropic salts in comparison to no additive and chaotropic urea using three mAbs and three common resins. Retaining acceptable yield, the kosmotropic salts improved resolution of monomer and impurities and reduced the contents of process-related host cell proteins and DNA as well as of product-related low and high molecular weight forms, despite some resin- and mAb-dependent variations. Moreover, a decrease in hydrolytic activity measured by a new assay for polysorbase activity was observed. In contrast, urea was hardly effective. The findings served to establish optimized step elution conditions with 0.25 M of sodium sulfate for a challenging mAb with complex format (bispecific 2 + 1 CrossMab) displaying high relative hydrophobicity and impurity levels. With yield and purity both in the range of 90 %, the contents of all impurity components were reduced, e.g., low molecular weight forms by two-fold and polysorbase activity by four-fold. The study indicates the potential of kosmotropic salts to establish efficient and comprehensive impurity separation by Protein A for facilitated downstream processing and economic manufacturing of complex antibodies.
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Affiliation(s)
| | | | - Tobias Meier
- Roche Diagnostics GmbH, Nonnenwald 2, Penzberg 82377, Germany
| | - Tabea Treu
- Roche Diagnostics GmbH, Nonnenwald 2, Penzberg 82377, Germany
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3
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Osuofa J, Husson SM. Comparative Evaluation of Commercial Protein A Membranes for the Rapid Purification of Antibodies. MEMBRANES 2023; 13:511. [PMID: 37233572 PMCID: PMC10220532 DOI: 10.3390/membranes13050511] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 05/27/2023]
Abstract
Protein A chromatography is ubiquitous to antibody purification. The high specificity of Protein A for binding the Fc-region of antibodies and related products enables unmatched clearance of process impurities like host cell proteins, DNA, and virus particles. A recent development is the commercialization of research-scale Protein A membrane chromatography products that can perform capture step purification with short residence times (RT) on the order of seconds. This study investigates process-relevant performance and physical properties of four Protein A membranes: Purilogics Purexa™ PrA, Gore® Protein Capture Device, Cytiva HiTrap™ Fibro PrismA, and Sartorius Sartobind® Protein A. Performance metrics include dynamic binding capacity, equilibrium binding capacity, regeneration-reuse, impurity clearance, and elution volumes. Physical properties include permeability, pore diameter, specific surface area, and dead volume. Key results indicate that all membranes except the Gore® Protein Capture Device operate with flow rate-independent binding capacities; the Purilogics Purexa™ PrA and Cytiva HiTrap Fibro™ PrismA have binding capacities on par with resins, with orders of magnitude faster throughput; and dead volume and hydrodynamics play major roles in elution behavior. Results from this study will enable bioprocess scientists to understand the ways that Protein A membranes can fit into their antibody process development strategies.
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Affiliation(s)
| | - Scott M. Husson
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, SC 29634, USA
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4
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Kozorog M, Caserman S, Grom M, Vicente FA, Pohar A, Likozar B. Model-based process optimization for mAb chromatography. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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5
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Alkaline treatment enhances mass transfer in protein A affinity chromatography. J Chromatogr A 2022; 1673:463058. [DOI: 10.1016/j.chroma.2022.463058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/11/2022] [Accepted: 04/11/2022] [Indexed: 11/24/2022]
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6
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Bhangale RP, Ye R, Lindsey TB, Wolfe LS. Application of Inline Variable Pathlength Technology for Rapid Determination of Dynamic Binding Capacity in Downstream Process Development of Biopharmaceuticals. Biotechnol Prog 2022; 38:e3236. [PMID: 35064963 PMCID: PMC9285919 DOI: 10.1002/btpr.3236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 01/05/2022] [Accepted: 01/12/2022] [Indexed: 11/09/2022]
Abstract
Determination of dynamic binding capacity (DBC) for capture purification chromatographic step is usually the first experiment to be performed during downstream process development of biopharmaceuticals. In this work, we investigated the application of inline variable pathlength technology using FlowVPE for rapid determination of DBC on affinity resins for protein capture and proved its comparability with offline titer methods. This work also demonstrated that variable pathlength technology for DBC determination can be successfully applied to different classes of monoclonal antibodies and fusion proteins. This enabled rapid screening of affinity resins and optimization of the capture chromatography step. Hence, use of inline variable pathlength technology eliminated the dependency on offline titer data, traditionally used for DBC determination and accelerated overall process development timelines with less cost.
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Affiliation(s)
- Rashmi P. Bhangale
- Downstream Process Development Department, KBI Biopharma Inc., 4117 Emperor Blvd. Durham NC
| | - Rui Ye
- Downstream Process Development Department, KBI Biopharma Inc., 4117 Emperor Blvd. Durham NC
| | - Thomas B. Lindsey
- Downstream Process Development Department, KBI Biopharma Inc., 4117 Emperor Blvd. Durham NC
| | - Leslie S. Wolfe
- Downstream Process Development Department, KBI Biopharma Inc., 4117 Emperor Blvd. Durham NC
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7
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Comparison of Protein A affinity resins for twin-column continuous capture processes: Process performance and resin characteristics. J Chromatogr A 2021; 1654:462454. [PMID: 34407469 DOI: 10.1016/j.chroma.2021.462454] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 07/29/2021] [Accepted: 08/03/2021] [Indexed: 11/20/2022]
Abstract
Continuous chromatography is a promising technology for downstream processing of biopharmaceuticals. The operation of continuous processes is significantly different to batch-mode chromatography and needs comprehensive evaluation. In this work, the performances of four Protein A affinity resins were studied systematically for twin-column continuous capture processes. A model-based approach was used to evaluate the process performance (productivity and capacity utilization) under varying operation conditions, and the objective was to reveal the crucial resin properties for continuous capture. The trade-off between productivity and capacity utilization was found, and it is necessary to select appropriate resins for different feedstock and operation conditions. The capacity utilization heavily depends on mass transfer, and steep breakthrough curves are favorable for high capacity utilization. The productivity is determined by both equilibrium binding capacity and mass transfer, and the balance of feed amount and feed time is critical. Moreover, the influence of binding capacity and mass transfer on process productivity and parameter sensitivity with two important resin properties (equilibrium binding capacity qmax and effective pore diffusion coefficient De) were assessed by the model, and suitable resin parameter ranges for twin-column continuous capture were determined. The model-based approach is an effective and useful tool to evaluate the complex performance of different resins and guide the design of next-generation resins for continuous processes.
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A cuboid chromatography device having short bed-height gives better protein separation at a significantly lower pressure drop than a taller column having the same bed-volume. J Chromatogr A 2021; 1647:462167. [PMID: 33962076 DOI: 10.1016/j.chroma.2021.462167] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/07/2021] [Accepted: 04/12/2021] [Indexed: 11/20/2022]
Abstract
Simultaneously reducing the bed-height and increasing the area of cross-section, while keeping the bed-volume the same, would substantially reduce the pressure drop across a process chromatography column. This would minimize problems such as resin compaction and non-uniformity in column packing, which are commonly faced when using soft chromatographic media. However, the increase in macroscale convective dispersion due to the increase in column diameter, and the resultant loss in resolution would far outweigh any potential benefit. Cuboid-packed bed devices have lower macroscale convective dispersion compared to their equivalent cylindrical columns. In this paper, we discuss how and why a flat cuboid chromatography device having a short bed-height gives better protein separation, at a significantly lower pressure drop, than a taller column having the same bed-volume. First, we explored this option based on computational fluid dynamic (CFD) simulations. Depending on the flow rate, the pressure drop across the flat cuboid device was lower than that in the tall column by a factor of 6.35 to 6.4 (i.e. less than 1/6th the pressure). The CFD results also confirmed that the macroscale convective dispersion within the flat cuboid device was significantly lower. Head-to-head separation experiments using a 1 mL flat cuboid device having a bed-height of 10 mm, and a 1 mL tall column having a bed-height of 25.8 mm, both packed with the same chromatographic media, were carried out. The number of theoretical plates per unit bed-height was on an average, around 2.5 time times greater with the flat cuboid device, while the total number of theoretical plates in the two devices were comparable. At any given superficial velocity, the height equivalent of a theoretical plate in the tall column was on an average, higher by a factor 2.5. Binary protein separation experiments showed that at any given flow rate, the resolution obtained using the flat cuboid device was significantly higher than that obtained with the tall column. This work opens up the possibility of designing and developing short bed-height chromatography devices for carrying out high-resolution biopharmaceutical purifications, at very low pressures.
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9
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Wetterhall M, Ander M, Björkman T, Musunuri S, Palmgren R, Rodrigo G. Investigation of alkaline effects on Protein A affinity ligands and resins using high resolution mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1162:122473. [PMID: 33370685 DOI: 10.1016/j.jchromb.2020.122473] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 10/28/2020] [Accepted: 11/21/2020] [Indexed: 10/22/2022]
Abstract
In this study, the enhanced alkaline stability of Protein A ligands and resins designed by protein engineering approaches is demonstrated. High throughput PreDictor™ plates were used to evaluate and compare the human Immunoglobulin G (IgG) static binding capacities (SBC) of MabSelect SuRe™ and MabSelect™ PrismA affinity chromatography (AC) resins after continuous incubation in 0.1-2.0 M NaOH for 1-72 h. The alkaline effect on the Protein A affinity ligand was studied by high resolution mass spectrometry (MS). The IgG binding capacity of the investigated AC resins show expected declining trends with increasing NaOH concentrations and incubation times. The decrease is larger for MabSelect SuRe than for MabSelect PrismA and occur at lower NaOH concentrations. MabSelect SuRe display high remaining binding capacity even after 72 h continuous incubation in 0.1 M NaOH, while higher concentrations induce an accentuated decline with incubation time. The MabSelect PrismA resin shows almost no effect on the binding capacity even after 72 h incubation in 0.5 M NaOH. Decline in capacity is first observed after 48 h incubation in 1.0 M NaOH, thus displaying the extreme alkaline stability of the PrismA affinity ligand. The MS analysis of the ligands, including a Protein A single B-domain, SuRe-domain and PrismA-domain clearly illustrate the increasing alkaline stability (B-domain < SuRe < PrismA) as the ligand has been refined using a protein engineering approach. Deamidation and ligand degradation could be monitored in relation to NaOH incubation conditions. Enzymatic digestion of MabSelect SuRe and MabSelect PrismA resins after alkaline incubation and LC-MS/MS peptide mapping facilitates identification and quantification of specific deamidation sites on the affinity ligand.
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Affiliation(s)
| | - Mats Ander
- Cytiva, BioProcess, Björkgatan 30, SE-75184 Uppsala, Sweden
| | - Tomas Björkman
- Cytiva, BioProcess, Björkgatan 30, SE-75184 Uppsala, Sweden
| | | | | | - Gustav Rodrigo
- Cytiva, BioProcess, Björkgatan 30, SE-75184 Uppsala, Sweden
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10
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Amritkar V, Adat S, Tejwani V, Rathore A, Bhambure R. Engineering Staphylococcal Protein A for high-throughput affinity purification of monoclonal antibodies. Biotechnol Adv 2020; 44:107632. [DOI: 10.1016/j.biotechadv.2020.107632] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/09/2020] [Accepted: 09/17/2020] [Indexed: 12/31/2022]
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11
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Kruse T, Kampmann M, Greller G. Aqueous Two‐Phase Extraction of Monoclonal Antibodies from High Cell Density Cell Culture. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.202000017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Thomas Kruse
- Sartorius Stedim Biotech GmbH, BioProcessing August-Spindler-Straße 11 37079 Göttingen Germany
| | - Markus Kampmann
- Sartorius Stedim Biotech GmbH, BioProcessing August-Spindler-Straße 11 37079 Göttingen Germany
| | - Gerhard Greller
- Sartorius Stedim Biotech GmbH, BioProcessing August-Spindler-Straße 11 37079 Göttingen Germany
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12
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Hebditch M, Kean R, Warwicker J. Modelling of pH-dependence to develop a strategy for stabilising mAbs at acidic steps in production. Comput Struct Biotechnol J 2020; 18:897-905. [PMID: 32322371 PMCID: PMC7171260 DOI: 10.1016/j.csbj.2020.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 03/05/2020] [Accepted: 03/05/2020] [Indexed: 01/02/2023] Open
Abstract
Engineered proteins are increasingly being required to function or pass through environmental stresses for which the underlying protein has not evolved. A major example in health are antibody therapeutics, where a low pH step is used for purification and viral inactivation. In order to develop a computational model for analysis of pH-stability, predictions are compared with experimental data for the relative pH-sensitivities of antibody domains. The model is then applied to proteases that have evolved to be functional in an acid environment, showing a clear signature for low pH-dependence of stability in the neutral to acidic pH region, largely through reduction of salt-bridges. Interestingly, an extensively acidic protein surface can maintain contribution to structural stabilisation at acidic pH through replacement of basic sidechains with polar, hydrogen-bonding groups. These observations form a design principle for engineering acid-stable proteins.
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Affiliation(s)
- Max Hebditch
- School of Chemistry, Faculty of Science and Engineering, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, UK
| | - Ryan Kean
- School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, UK
| | - Jim Warwicker
- School of Chemistry, Faculty of Science and Engineering, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, UK
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13
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Joubert S, Dodelet V, Béliard R, Durocher Y. [Biomanufacturing of monoclonal antibodies]. Med Sci (Paris) 2020; 35:1153-1159. [PMID: 31903930 DOI: 10.1051/medsci/2019219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Antibody-based drugs are an increasingly important part of the therapeutic arsenal against a wide variety of medical conditions. As the number of commercial products and pipeline candidates grows, a crucial issue facing the industry is the current and future state of biomanufacturing. The productivity of the protein expression platforms, along with the performance of the technologies impacting upstream and downstream bioprocessing, are critical factors affecting the cost and time of therapeutic antibody development and commercialization. Cell engineering strategies are being used to improve the production of antibodies and to better control their quality in terms of posttranslational modifications, in particular with regards to their glycosylation state, as this can influence their therapeutic activity. Additionally, the advance of "omics" technologies have recently given rise to new possibilities in improving these expression platforms. We review here the various advances in biomanufacturing essential to the continued growth of the therapeutic antibody market.
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Affiliation(s)
- Simon Joubert
- Centre de recherche sur les thérapeutiques en santé humaine, Conseil national de recherche du Canada, Montréal, Québec H4P 2R2, Canada
| | - Vincent Dodelet
- Centre de recherche sur les thérapeutiques en santé humaine, Conseil national de recherche du Canada, Montréal, Québec H4P 2R2, Canada
| | - Roland Béliard
- Laboratoires français du fractionnement et des biotechnologies, Les Ulis, Courtaboeuf Cedex, France
| | - Yves Durocher
- Centre de recherche sur les thérapeutiques en santé humaine, Conseil national de recherche du Canada, Montréal, Québec H4P 2R2, Canada - Département de biochimie et médecine moléculaire, Université de Montréal, Montréal, Québec H3C 3J7, Canada
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14
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Liu W, Fan X, Wang X, Rai K, Su J, Xian M, Nian R. Chromatin-directed clarification in cell culture fluid enables non-protein affinity antibody purification by tangential flow filtration integrated with high-capacity cation exchange chromatography. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2019.107315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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15
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Singh N, Herzer S. Downstream Processing Technologies/Capturing and Final Purification : Opportunities for Innovation, Change, and Improvement. A Review of Downstream Processing Developments in Protein Purification. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2019; 165:115-178. [PMID: 28795201 DOI: 10.1007/10_2017_12] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Increased pressure on upstream processes to maximize productivity has been crowned with great success, although at the cost of shifting the bottleneck to purification. As drivers were economical, focus is on now on debottlenecking downstream processes as the main drivers of high manufacturing cost. Devising a holistically efficient and economical process remains a key challenge. Traditional and emerging protein purification strategies with particular emphasis on methodologies implemented for the production of recombinant proteins of biopharmaceutical importance are reviewed. The breadth of innovation is addressed, as well as the challenges the industry faces today, with an eye to remaining impartial, fair, and balanced. In addition, the scope encompasses both chromatographic and non-chromatographic separations directed at the purification of proteins, with a strong emphasis on antibodies. Complete solutions such as integrated USP/DSP strategies (i.e., continuous processing) are discussed as well as gains in data quantity and quality arising from automation and high-throughput screening (HTS). Best practices and advantages through design of experiments (DOE) to access a complex design space such as multi-modal chromatography are reviewed with an outlook on potential future trends. A discussion of single-use technology, its impact and opportunities for further growth, and the exciting developments in modeling and simulation of DSP rounds out the overview. Lastly, emerging trends such as 3D printing and nanotechnology are covered. Graphical Abstract Workflow of high-throughput screening, design of experiments, and high-throughput analytics to understand design space and design space boundaries quickly. (Reproduced with permission from Gregory Barker, Process Development, Bristol-Myers Squibb).
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Affiliation(s)
- Nripen Singh
- Bristol-Myers Squibb, Global Manufacturing and Supply, Devens, MA, 01434, USA.
| | - Sibylle Herzer
- Bristol-Myers Squibb, Global Manufacturing and Supply, Hopewell, NJ, 01434, USA
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16
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Brechmann NA, Eriksson PO, Eriksson K, Oscarsson S, Buijs J, Shokri A, Hjälm G, Chotteau V. Pilot-scale process for magnetic bead purification of antibodies directly from non-clarified CHO cell culture. Biotechnol Prog 2019; 35:e2775. [PMID: 30629859 PMCID: PMC6617771 DOI: 10.1002/btpr.2775] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 12/31/2018] [Accepted: 12/31/2018] [Indexed: 11/20/2022]
Abstract
High capacity magnetic protein A agarose beads, LOABeads PrtA, were used in the development of a new process for affinity purification of monoclonal antibodies (mAbs) from non‐clarified CHO cell broth using a pilot‐scale magnetic separator. The LOABeads had a maximum binding capacity of 65 mg/mL and an adsorption capacity of 25–42 mg IgG/mL bead in suspension for an IgG concentration of 1 to 8 g/L. Pilot‐scale separation was initially tested in a mAb capture step from 26 L clarified harvest. Small‐scale experiments showed that similar mAb adsorptions were obtained in cell broth containing 40 × 106 cells/mL as in clarified supernatant. Two pilot‐scale purification runs were then performed on non‐clarified cell broth from fed‐batch runs of 16 L, where a rapid mAb adsorption ≥96.6% was observed after 1 h. This process using 1 L of magnetic beads had an overall mAb yield of 86% and 16 times concentration factor. After this single protein A capture step, the mAb purity was similar to the one obtained by column chromatography, while the host cell protein content was very low, <10 ppm. Our results showed that this magnetic bead mAb purification process, using a dedicated pilot‐scale separation device, was a highly efficient single step, which directly connected the culture to the downstream process without cell clarification. Purification of mAb directly from non‐clarified cell broth without cell separation can provide significant savings in terms of resources, operation time, and equipment, compared to legacy procedure of cell separation followed by column chromatography step. © 2019 American Institute of Chemical Engineers Biotechnol. Prog., 35: e2775, 2019.
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Affiliation(s)
- Nils A Brechmann
- AdBIOPRO, VINNOVA Competence Centre for Advanced BioProduction by Continuous Processing, Stockholm, Sweden.,Cell Technology Group (CETEG), Dept. of Industrial Biotechnology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Inst. of Technology, Stockholm, Sweden
| | | | - Kristofer Eriksson
- AdBIOPRO, VINNOVA Competence Centre for Advanced BioProduction by Continuous Processing, Stockholm, Sweden.,Lab-on-a-Bead AB, Uppsala, Sweden
| | - Sven Oscarsson
- Dept. of Organic Chemistry, Stockholm University, Stockholm, Sweden
| | - Jos Buijs
- Dept. of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Atefeh Shokri
- AdBIOPRO, VINNOVA Competence Centre for Advanced BioProduction by Continuous Processing, Stockholm, Sweden.,Cell Technology Group (CETEG), Dept. of Industrial Biotechnology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Inst. of Technology, Stockholm, Sweden
| | - Göran Hjälm
- AdBIOPRO, VINNOVA Competence Centre for Advanced BioProduction by Continuous Processing, Stockholm, Sweden.,Lab-on-a-Bead AB, Uppsala, Sweden
| | - Véronique Chotteau
- AdBIOPRO, VINNOVA Competence Centre for Advanced BioProduction by Continuous Processing, Stockholm, Sweden.,Cell Technology Group (CETEG), Dept. of Industrial Biotechnology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Inst. of Technology, Stockholm, Sweden
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17
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Pabst TM, Thai J, Hunter AK. Evaluation of recent Protein A stationary phase innovations for capture of biotherapeutics. J Chromatogr A 2018; 1554:45-60. [DOI: 10.1016/j.chroma.2018.03.060] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 03/26/2018] [Accepted: 03/29/2018] [Indexed: 11/29/2022]
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18
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Krepper W, Satzer P, Beyer BM, Jungbauer A. Temperature dependence of antibody adsorption in protein A affinity chromatography. J Chromatogr A 2018; 1551:59-68. [DOI: 10.1016/j.chroma.2018.03.059] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 03/22/2018] [Accepted: 03/29/2018] [Indexed: 01/02/2023]
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19
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Chemical modification of protein a chromatography ligands with polyethylene glycol. II: Effects on resin robustness and process selectivity. J Chromatogr A 2018; 1546:89-96. [DOI: 10.1016/j.chroma.2018.02.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 01/13/2018] [Accepted: 02/13/2018] [Indexed: 11/18/2022]
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20
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Protein A affinity chromatography of Chinese hamster ovary (CHO) cell culture broths containing biopharmaceutical monoclonal antibody (mAb): Experiments and mechanistic transport, binding and equilibrium modeling. J Chromatogr B Analyt Technol Biomed Life Sci 2018. [DOI: 10.1016/j.jchromb.2018.02.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Pathak M, Rathore AS, Lintern K, Bracewell DG. Protein A chromatography resin lifetime-impact of feed composition. Biotechnol Prog 2018; 34:412-419. [DOI: 10.1002/btpr.2608] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 09/18/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Mili Pathak
- Department of Chemical Engineering; Indian Institute of Technology; New Delhi India
| | - Anurag S. Rathore
- Department of Chemical Engineering; Indian Institute of Technology; New Delhi India
| | - Katherine Lintern
- Department of Biochemical Engineering; University College London; Gower Street UK London
| | - Daniel G. Bracewell
- Department of Biochemical Engineering; University College London; Gower Street UK London
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Weinberg J, Zhang S, Crews G, Healy E, Carta G, Przybycien T. Polyclonal and monoclonal IgG binding on protein A resins—Evidence of competitive binding effects. Biotechnol Bioeng 2017; 114:1803-1812. [DOI: 10.1002/bit.26286] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 02/20/2017] [Accepted: 03/09/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Justin Weinberg
- Department of Chemical EngineeringCarnegie Mellon University5000 Forbes AvenuePittsburghPennsylvania 15213
| | - Shaojie Zhang
- Department of Chemical EngineeringUniversity of Virginia102 Engineers’ WayCharlottesvilleVirginia 22904
| | - Gillian Crews
- Department of Chemical EngineeringCarnegie Mellon University5000 Forbes AvenuePittsburghPennsylvania 15213
| | - Edward Healy
- Department of Chemical EngineeringCarnegie Mellon University5000 Forbes AvenuePittsburghPennsylvania 15213
| | - Giorgio Carta
- Department of Chemical EngineeringUniversity of Virginia102 Engineers’ WayCharlottesvilleVirginia 22904
| | - Todd Przybycien
- Department of Chemical EngineeringCarnegie Mellon University5000 Forbes AvenuePittsburghPennsylvania 15213
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Pfister D, David L, Holzer M, Nicoud RM. Designing affinity chromatographic processes for the capture of antibodies. Part I: A simplified approach. J Chromatogr A 2017; 1494:27-39. [DOI: 10.1016/j.chroma.2017.02.070] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 02/27/2017] [Accepted: 02/28/2017] [Indexed: 10/20/2022]
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Shukla AA, Wolfe LS, Mostafa SS, Norman C. Evolving trends in mAb production processes. Bioeng Transl Med 2017; 2:58-69. [PMID: 29313024 PMCID: PMC5689530 DOI: 10.1002/btm2.10061] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 02/24/2017] [Accepted: 03/06/2017] [Indexed: 12/30/2022] Open
Abstract
Monoclonal antibodies (mAbs) have established themselves as the leading biopharmaceutical therapeutic modality. The establishment of robust manufacturing platforms are key for antibody drug discovery efforts to seamlessly translate into clinical and commercial successes. Several drivers are influencing the design of mAb manufacturing processes. The advent of biosimilars is driving a desire to achieve lower cost of goods and globalize biologics manufacturing. High titers are now routinely achieved for mAbs in mammalian cell culture. These drivers have resulted in significant evolution in process platform approaches. Additionally, several new trends in bioprocessing have arisen in keeping with these needs. These include the consideration of alternative expression systems, continuous biomanufacturing and non-chromatographic separation formats. This paper discusses these drivers in the context of the kinds of changes they are driving in mAb production processes.
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Affiliation(s)
| | - Leslie S. Wolfe
- Process Development & ManufacturingKBI Biopharma Inc.DurhamNC27704
| | - Sigma S. Mostafa
- Process Development & ManufacturingKBI Biopharma Inc.DurhamNC27704
| | - Carnley Norman
- Process Development & ManufacturingKBI Biopharma Inc.DurhamNC27704
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Pathak M, Rathore AS. Mechanistic understanding of fouling of protein A chromatography resin. J Chromatogr A 2016; 1459:78-88. [DOI: 10.1016/j.chroma.2016.06.084] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 06/28/2016] [Accepted: 06/30/2016] [Indexed: 10/21/2022]
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Pinto NDS, Uplekar SD, Moreira AR, Rao G, Frey DD. Immunoglobulin G elution in protein A chromatography employing the method of chromatofocusing for reducing the co-elution of impurities. Biotechnol Bioeng 2016; 114:154-162. [PMID: 27425244 DOI: 10.1002/bit.26053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 07/10/2016] [Accepted: 07/12/2016] [Indexed: 11/12/2022]
Abstract
Purification processes for monoclonal Immunoglobulin G (IgG) typically employ protein A chromatography as a capture step to remove most of the impurities. One major concern of the post-protein A chromatography processes is the co-elution of some of the host cell proteins (HCPs) with IgG in the capture step. In this work, a novel method for IgG elution in protein A chromatography that reduces the co-elution of HCPs is presented where a two-step pH gradient is self-formed inside a protein A chromatography column. The complexities involved in using an internally produced pH gradient in a protein A chromatography column employing adsorbed buffering species are discussed though equation-based modeling. Under the conditions employed, ELISA assays show a 60% reduction in the HCPs co-eluting with the IgG fraction when using the method as compared to conventional protein A elution without affecting the IgG yield. Evidence is also obtained which indicates that the amount of leached protein A present in free solution in the purified product is reduced by the new method. Biotechnol. Bioeng. 2017;114: 154-162. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Nuno D S Pinto
- Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Baltimore, Maryland, 21250
| | - Shaunak D Uplekar
- Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Baltimore, Maryland, 21250
| | - Antonio R Moreira
- Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Baltimore, Maryland, 21250
| | - Govind Rao
- Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Baltimore, Maryland, 21250
| | - Douglas D Frey
- Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Baltimore, Maryland, 21250
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