1
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Schmitz F, Knöchelmann E, Kruse T, Minceva M, Kampmann M. Continuous multi-column capture of monoclonal antibodies with convective diffusive membrane adsorbers. Biotechnol Bioeng 2024; 121:1859-1875. [PMID: 38470343 DOI: 10.1002/bit.28695] [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: 12/18/2023] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 03/13/2024]
Abstract
Downstream processing is the bottleneck in the continuous manufacturing of monoclonal antibodies (mAbs). To overcome throughput limitations, two different continuous processes with a novel convective diffusive protein A membrane adsorber (MA) were investigated: the rapid cycling parallel multi-column chromatography (RC-PMCC) process and the rapid cycling simulated moving bed (RC-BioSMB) process. First, breakthrough curve experiments were performed to investigate the influence of the flow rate on the mAb dynamic binding capacity and to calculate the duration of the loading steps. In addition, customized control software was developed for an automated MA exchange in case of pressure increase due to membrane fouling to enable robust, uninterrupted, and continuous processing. Both processes were performed for 4 days with 0.61 g L-1 mAb-containing filtrate and process performance, product purity, productivity, and buffer consumption were compared. The mAb was recovered with a yield of approximately 90% and productivities of 1010 g L-1 d-1 (RC-PMCC) and 574 g L-1 d-1 (RC-BioSMB). At the same time, high removal of process-related impurities was achieved with both processes, whereas the buffer consumption was lower for the RC-BioSMB process. Finally, the attainable productivity for perfusion bioreactors of different sizes with suitable MA sizes was calculated to demonstrate the potential to operate both processes on a manufacturing scale with bioreactor volumes of up to 2000 L.
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Affiliation(s)
- Fabian Schmitz
- Biothermodynamics, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
- Corporate Research, Sartorius Stedim Biotech GmbH, Göttingen, Germany
| | - Elias Knöchelmann
- Corporate Research, Sartorius Stedim Biotech GmbH, Göttingen, Germany
| | - Thomas Kruse
- Corporate Research, Sartorius Stedim Biotech GmbH, Göttingen, Germany
| | - Mirjana Minceva
- Biothermodynamics, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
| | - Markus Kampmann
- Corporate Research, Sartorius Stedim Biotech GmbH, Göttingen, Germany
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2
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Ramakrishna A, Rathore AS. On-line PAT based monitoring and control of resin aging in protein A chromatography for COGs reduction. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1234:124010. [PMID: 38266612 DOI: 10.1016/j.jchromb.2024.124010] [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: 11/14/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 01/26/2024]
Abstract
Resin aging is a common occurrence in chromatographic processes and generally influenced by factors such as cleaning procedure and composition of the feed stream. Two major events occur along with protein fouling, one is the loss of protein A ligand and the other is non-specific, irreversible interactions of foulants with resin particles. Both these are responsible for resin aging. As a result, the performance of the resin suffers a fall, and this can be quantified through indicators like reduction in dynamic binding capacity, increased column pressure, or peak broadening. The number of reuse cycles of a resin has a major influence on the cost per batch. This is even more significant in the case of protein A resin, which is the primary cost driver for downstream processing. In this work, we first identify chromatogram characteristics that correlate to resin aging. Next, we propose a data monitoring-based tool for prediction of resin aging. Principal component analysis of the UV data of Mab 1 showed a deviation at 120th cycle and an out of specification at around 149th cycle, corroborating with yield decline. Batch level modelling could deliver a predictable trend for resin aging and was demonstrated for two different Mabs (Mab1 and Mab2). The results demonstrate that significant resin aging can be detected 20-25 cycles prior to observable yield decline. A control strategy has been suggested such that once the deviation has been detected, additional resin cleaning is triggered. Overall, a 50-100 Protein A cycle enhancement in resin lifespan could be achieved.
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Affiliation(s)
| | - Anurag S Rathore
- Dept of Chemical Engineering, Indian Institute of Technology, India.
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3
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Parau M, Pullen J, Bracewell DG. Depth filter material process interaction in the harvest of mammalian cells. Biotechnol Prog 2023; 39:e3329. [PMID: 36775837 PMCID: PMC10909467 DOI: 10.1002/btpr.3329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 01/16/2023] [Accepted: 02/02/2023] [Indexed: 02/14/2023]
Abstract
Upstream advances have led to increased mAb titers above 5 g/L in 14-day fed-batch cultures. This is accompanied by higher cell densities and process-related impurities such as DNA and Host Cell Protein (HCP), which have caused challenges for downstream operations. Depth filtration remains a popular choice for harvesting CHO cell culture, and there is interest in utilizing these to remove process-related impurities at the harvest stage. Operation of the harvest stage has also been shown to affect the performance of the Protein A chromatography step. In addition, manufacturers are looking to move away from natural materials such as cellulose and Diatomaceous Earth (DE) for better filter consistency and security of supply. Therefore, there is an increased need for further understanding and knowledge of depth filtration. This study investigates the effect of depth filter material and loading on the Protein A resin lifetime with an industrially relevant high cell density feed material (40 million cells/ml). It focuses on the retention of process-related impurities such as DNA and HCP through breakthrough studies and a novel confocal microscopy method for imaging foulant in-situ. An increase in loading of the primary-synthetic filter by a third, led to earlier DNA breakthrough in the secondary filter, with DNA concentration at a throughput of 50 L/m2 being more than double. Confocal imaging of the depth filters showed that the foulant was pushed forward into the filter structure with higher loading. The additional two layers in the primary-synthetic filter led to better pressure profiles in both primary and secondary filters but did not help to retain HCP or DNA. Reduced filtrate clarity, as measured by OD600, was 1.6 fold lower in the final filtrate where a synthetic filter train was used. This was also associated with precipitation in the Protein A column feed. Confocal imaging of resin after 100 cycles showed that DNA build-up around the outside of the bead was associated with synthetic filter trains, leading to potential mass transfer problems.
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Affiliation(s)
- Maria Parau
- Department of Biochemical EngineeringUniversity College LondonLondonUK
| | - James Pullen
- Research and DevelopmentFUJIFILM Diosynth Biotechnologies (FDB)BillinghamUK
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4
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Beattie JW, Istrate A, Lu A, Marshall C, Rowland-Jones RC, Farys M, Kazarian SG, Byrne B. Causes of Industrial Protein A Column Degradation, Explored Using Raman Spectroscopy. Anal Chem 2022; 94:15703-15710. [DOI: 10.1021/acs.analchem.2c03063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- James W. Beattie
- Department of Life Sciences, Imperial College London, LondonSW7 2AZ, United Kingdom
- Department of Chemical Engineering, Imperial College London, LondonSW7 2AZ, United Kingdom
| | - Alena Istrate
- Biopharm Process Research, Medicine Development & Supply, GSK R&D, Gunnels Wood Road, Stevenage, HertfordshireSG1 2NY, United Kingdom
| | - Annabelle Lu
- Department of Life Sciences, Imperial College London, LondonSW7 2AZ, United Kingdom
| | - Cameron Marshall
- Department of Life Sciences, Imperial College London, LondonSW7 2AZ, United Kingdom
| | - Ruth C. Rowland-Jones
- Biopharm Process Research, Medicine Development & Supply, GSK R&D, Gunnels Wood Road, Stevenage, HertfordshireSG1 2NY, United Kingdom
| | - Monika Farys
- Biopharm Process Research, Medicine Development & Supply, GSK R&D, Gunnels Wood Road, Stevenage, HertfordshireSG1 2NY, United Kingdom
| | - Sergei G. Kazarian
- Department of Chemical Engineering, Imperial College London, LondonSW7 2AZ, United Kingdom
| | - Bernadette Byrne
- Department of Life Sciences, Imperial College London, LondonSW7 2AZ, United Kingdom
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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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Beattie JW, Rowland-Jones RC, Farys M, Tran R, Kazarian SG, Byrne B. Insight into purification of monoclonal antibodies in industrial columns via studies of Protein A binding capacity by in situ ATR-FTIR spectroscopy. Analyst 2021; 146:5177-5185. [PMID: 34296229 PMCID: PMC8351638 DOI: 10.1039/d1an00985k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 07/16/2021] [Indexed: 12/11/2022]
Abstract
Therapeutic monoclonal antibodies (mAbs) are effective treatments for a range of cancers and other serious diseases, however mAb treatments cost on average ∼$100 000 per year per patient, limiting their use. Currently, industry favours Protein A affinity chromatography (PrAc) as the key step in downstream processing of mAbs. This step, although highly efficient, represents a significant mAb production cost. Fouling of the Protein A column and Protein A ligand leaching contribute to the cost of mAb production by shortening the life span of the resin. In this study, we assessed the performance of used PrAc resin recovered from the middle inlet, center and outlet as well as the side inlet of a pilot-scale industrial column. We used a combination of static binding capacity (SBC) analysis and Attenuated Total Reflection-Fourier Transform Infrared (ATR-FTIR) spectroscopy to explore the used resin samples. SBC analysis demonstrated that resin from the inlet of the column had lower binding capacity than resin from the column outlet. ATR-FTIR spectroscopy with PLS (partial least square) analysis confirmed the results obtained from SBC analysis. Importantly, in situ ATR-FTIR spectroscopy also allowed both measurement of the concentration and assessment of the conformational state of the bound Protein A. Our results reveal that PrAc resin degradation after use is dependent on column location and that neither Protein A ligand leaching nor denaturation are responsible for binding capacity loss.
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Affiliation(s)
- James W Beattie
- Department of Life Sciences, Imperial College London, South Kensington Campus, SW7 2AZ, London, UK. and Department of Chemical Engineering, Imperial College London, South Kensington Campus, SW7 2AZ, London, UK.
| | - Ruth C Rowland-Jones
- Biopharm Process Development, GlaxoSmithKline, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, UK.
| | - Monika Farys
- Biopharm Process Development, GlaxoSmithKline, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, UK.
| | - Richard Tran
- Biopharm Process Development, GlaxoSmithKline, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, UK.
| | - Sergei G Kazarian
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, SW7 2AZ, London, UK.
| | - Bernadette Byrne
- Department of Life Sciences, Imperial College London, South Kensington Campus, SW7 2AZ, London, UK.
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7
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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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8
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Model based strategies towards protein A resin lifetime optimization and supervision. J Chromatogr A 2020; 1625:461261. [DOI: 10.1016/j.chroma.2020.461261] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 05/07/2020] [Accepted: 05/18/2020] [Indexed: 11/19/2022]
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9
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Pathak M, Lintern K, Johnson TF, Nair AM, Mukherji S, Bracewell DG, Rathore AS. Analytical tools for monitoring changes in physical and chemical properties of chromatography resin upon reuse. Electrophoresis 2019; 40:3074-3083. [DOI: 10.1002/elps.201900089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 09/17/2019] [Accepted: 09/19/2019] [Indexed: 01/04/2023]
Affiliation(s)
- Mili Pathak
- Department of Chemical EngineeringIndian Institute of Technology New Delhi India
| | - Katherine Lintern
- Department of Biochemical EngineeringUniversity College London London United Kingdom
| | - Thomas F. Johnson
- Department of Biochemical EngineeringUniversity College London London United Kingdom
| | - Aswathy M. Nair
- Department of Biosciences and BioengineeringIndian Institute of Technology Bombay India
| | - Soumyo Mukherji
- Department of Biosciences and BioengineeringIndian Institute of Technology Bombay India
| | - Daniel G. Bracewell
- Department of Biochemical EngineeringUniversity College London London United Kingdom
| | - Anurag S. Rathore
- Department of Chemical EngineeringIndian Institute of Technology New Delhi India
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10
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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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11
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Removal of B. cereus cereulide toxin from monoclonal antibody bioprocess feed via two-step Protein A affinity and multimodal chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1118-1119:194-202. [PMID: 31059926 DOI: 10.1016/j.jchromb.2019.04.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 03/17/2019] [Accepted: 04/06/2019] [Indexed: 12/22/2022]
Abstract
A rapid and sensitive liquid chromatography-mass spectrometry assay was developed and used to quantify emetic cereulide peptide exotoxin, which can be related to possible Bacillus cereus contamination in monoclonal antibody (mAb) bioprocess feeds. The assay limit of detection was 0.05 ng/mL (~1 fmol injected) and limit of quantification 0.16 ng/mL (~3 fmol injected) over a standard curve with >3 orders of magnitude linear dynamic range. The assay allowed quantification of toxin removal in an established two-step mAb purification process consisting of Protein A affinity chromatography followed by multi-modal anion exchange chromatography. Toxin content was ascertained in process stream sample fractions as well as on the Protein A affinity column. An optimized analytical method allowed separation of cereulide toxin from other mAb cell culture components within 6 min. Spiking experiments showed that samples should be collected in high (80% v/v) content acetonitrile to reduce nonspecific losses of the cereulide. The majority of mAb purification process-associated cereulide was detected in the Protein A flow through fraction, whereas only residual amounts were found in wash, strip, and elution fractions. Column cleaning-in-place (CIP) procedures were evaluated to prevent carryover between affinity capture cycles. No carryover was detected between cycles, however trace amounts of cereulide were extracted from the Protein A resin. Increasing the CIP NaOH concentration from 0.1 M to 0.5 M, and contact time from 15 min to 1 h, improved removal of residual cereulide from the resin. Applicability of CIP clearance of cereulide during Protein A chromatography was confirmed with three different mAb feeds. Post Protein A polishing, via target flow through on a multi-modal anion exchange chromatography column, resulted in a product pool with no detectable cereulide. Approximately 5 logs of reduction in cereulide concentration was obtained over the two-step chromatography process. Cereulide contamination is well known and of concern in food processing, however this research may be the first LC-MS quantification of cereulide contamination, and its clearance, in biopharmaceutical mAb processing. The analytical method may also be used to rapidly screen for cereulide contamination in upstream cell culture process streams, prior to downstream product purification. This will allow appropriate measures to be taken to reduce toxin exposure to downstream bioprocess raw materials, consumables and equipment.
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12
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Pan C, Becerra-Arteaga A, Tran B, Chinn M, Wang H, Chen Q, Lutz H, Zhang M. Characterizing and enhancing virus removal by protein A chromatography. Biotechnol Bioeng 2019; 116:846-856. [DOI: 10.1002/bit.26866] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 10/29/2018] [Accepted: 11/12/2018] [Indexed: 01/17/2023]
Affiliation(s)
- Chinwei Pan
- Genentech Inc.; South San Francisco California
| | | | | | | | - Hua Wang
- Genentech Inc.; South San Francisco California
| | - Qi Chen
- Genentech Inc.; South San Francisco California
| | - Herb Lutz
- EMD Millipore Corporation; Burlington Massachusetts
| | - Min Zhang
- Genentech Inc.; South San Francisco California
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13
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An enhanced regeneration strategy to improve microbial control and prolong resin lifetime for Protein A resin in large-scale monoclonal antibody (mAb) purification. J Biotechnol 2019; 289:118-125. [DOI: 10.1016/j.jbiotec.2018.11.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 10/31/2018] [Accepted: 11/26/2018] [Indexed: 11/21/2022]
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14
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Shekhawat LK, Pathak M, Sakar J, Rathore AS. Process development in the Quality by Design paradigm: Modeling of Protein A chromatography resin fouling. J Chromatogr A 2018; 1570:56-66. [DOI: 10.1016/j.chroma.2018.07.060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 07/16/2018] [Accepted: 07/24/2018] [Indexed: 01/02/2023]
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15
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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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16
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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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17
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Weinberg J, Zhang S, Crews G, Carta G, Przybycien T. Chemical modification of protein A chromatography ligands with polyethylene glycol. I: Effects on IgG adsorption equilibrium, kinetics, and transport. J Chromatogr A 2018; 1546:77-88. [PMID: 29551236 DOI: 10.1016/j.chroma.2018.03.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 02/27/2018] [Accepted: 03/07/2018] [Indexed: 10/17/2022]
Abstract
Chemical modification of Protein A (ProA) chromatography ligands with polyethylene glycol (PEGylation) has been proposed as a strategy to increase the process selectivity and resin robustness by providing the ligand with a steric repulsion barrier against non-specific binding. This article comprises a comprehensive study of IgG adsorption and transport in Repligen CaptivA PriMAB resin with PEGylated ProA ligands that are modified using 5.2 and 21.5 kDa PEG chains. We studied the impact of the molecular weight of the PEG as well as the extent of PEGylation for the 5.2 kDa PEG modification. In all cases, PEGylation of ProA ligands decreases the resin average pore size, particle porosity, and static binding capacity for IgG proportional to the volume of conjugated PEG in the resin. Resin batch uptake experiments conducted in bulk via a stirred-tank system and with individual resin particles under confocal laser scanning microscopy suggests that PEGylation introduces heterogeneity into IgG binding kinetics: a fraction of the IgG binding sites are transformed from typical fast association kinetic behavior to slow kinetic behavior. pH gradient elution experiments of an IgG molecule on the modified resins show an increase in IgG elution pH for all modified resins, implying a decrease in IgG-ProA binding affinity on modification. Despite losses in static binding capacity for all resins with PEGylated ligands, the loss of dynamic binding capacity at 10% breakthrough (DBC10%) ranged more broadly from almost 0-47% depending on the PEG molecular weight and the extent of PEGylation. Minimal losses in DBC10% were observed with a low extent of PEGylation with a smaller molecular weight PEG, while higher losses were observed at higher extents of PEGylation and with higher molecular weight PEG due to decreased static binding capacity and increased mass transfer resistance. This work provides insight into the practical implications for resin performance if PEGylation is considered as a strategy for selectivity enhancement in affinity chromatography with macromolecular ligands.
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Affiliation(s)
- Justin Weinberg
- Department of Chemical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA
| | - Shaojie Zhang
- Department of Chemical Engineering, University of Virginia, 102 Engineers' Way, Charlottesville, VA 22904, USA
| | - Gillian Crews
- Department of Chemical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA
| | - Giorgio Carta
- Department of Chemical Engineering, University of Virginia, 102 Engineers' Way, Charlottesville, VA 22904, USA
| | - Todd Przybycien
- Department of Chemical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA.
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18
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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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19
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O'Flaherty R, Trbojević-Akmačić I, Greville G, Rudd PM, Lauc G. The sweet spot for biologics: recent advances in characterization of biotherapeutic glycoproteins. Expert Rev Proteomics 2017; 15:13-29. [PMID: 29130774 DOI: 10.1080/14789450.2018.1404907] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Glycosylation is recognized as a Critical Quality Attribute for therapeutic glycoproteins such as monoclonal antibodies, fusion proteins and therapeutic replacement enzymes. Hence, efficient and quantitative glycan analysis techniques have been increasingly important for their discovery, development and quality control. The aim of this review is to highlight relevant and recent advances in analytical technologies for characterization of biotherapeutic glycoproteins. Areas covered: The review gives an overview of the glycosylation trends of biotherapeutics approved in 2016 and 2017 by FDA. It describes current and novel analytical technologies for characterization of therapeutic glycoproteins and is explored in the context of released glycan, glycopeptide or intact glycoprotein analysis. Ultra performance liquid chromatography, mass spectrometry and capillary electrophoresis technologies are explored in this context. Expert commentary: There is a need for the biopharmaceutical industry to incorporate novel state of the art analytical technologies into existing and new therapeutic glycoprotein workflows for safer and more efficient biotherapeutics and for the improvement of future biotherapeutic design. Additionally, at present, there is no 'gold-standard' approach to address all the regulatory requirements and as such this will involve the use of orthogonal glycoanalytical technologies with a view to gain diagnostic information about the therapeutic glycoprotein.
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Affiliation(s)
- Róisín O'Flaherty
- a NIBRT GlycoScience Group , National Institute for Bioprocessing, Research and Training , Blackrock, Co. Dublin , Ireland
| | | | - Gordon Greville
- a NIBRT GlycoScience Group , National Institute for Bioprocessing, Research and Training , Blackrock, Co. Dublin , Ireland
| | - Pauline M Rudd
- a NIBRT GlycoScience Group , National Institute for Bioprocessing, Research and Training , Blackrock, Co. Dublin , Ireland
| | - Gordan Lauc
- b Genos Glycoscience Research Laboratory , 10000 , Zagreb , Croatia.,c Faculty of Pharmacy and Biochemistry , University of Zagreb , Zagreb , Croatia
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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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21
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Zhang J, Siva S, Caple R, Ghose S, Gronke R. Maximizing the functional lifetime of Protein A resins. Biotechnol Prog 2017; 33:708-715. [DOI: 10.1002/btpr.2448] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 01/17/2017] [Indexed: 11/09/2022]
Affiliation(s)
| | - Sethu Siva
- Process Biochemistry, Biogen, Research Triangle Park NC
| | - Ryan Caple
- Process Biochemistry, Biogen, Research Triangle Park NC
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22
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Zhang S, Iskra T, Daniels W, Salm J, Gallo C, Godavarti R, Carta G. Structural and performance characteristics of representative anion exchange resins used for weak partitioning chromatography. Biotechnol Prog 2017; 33:425-434. [DOI: 10.1002/btpr.2412] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 11/21/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Shaojie Zhang
- Dept. of Chemical Engineering; University of Virginia; Charlottesville VA
| | | | | | | | | | | | - Giorgio Carta
- Dept. of Chemical Engineering; University of Virginia; Charlottesville VA
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23
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Lintern K, Pathak M, Smales CM, Howland K, Rathore A, Bracewell DG. Residual on column host cell protein analysis during lifetime studies of protein A chromatography. J Chromatogr A 2016; 1461:70-7. [DOI: 10.1016/j.chroma.2016.07.055] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 07/16/2016] [Accepted: 07/20/2016] [Indexed: 11/28/2022]
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24
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Boulet-Audet M, Kazarian SG, Byrne B. In-column ATR-FTIR spectroscopy to monitor affinity chromatography purification of monoclonal antibodies. Sci Rep 2016; 6:30526. [PMID: 27470880 PMCID: PMC4965771 DOI: 10.1038/srep30526] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 07/04/2016] [Indexed: 11/18/2022] Open
Abstract
In recent years many monoclonal antibodies (mAb) have entered the biotherapeutics market, offering new treatments for chronic and life-threatening diseases. Protein A resin captures monoclonal antibody (mAb) effectively, but the binding capacity decays over repeated purification cycles. On an industrial scale, replacing fouled Protein A affinity chromatography resin accounts for a large proportion of the raw material cost. Cleaning-in-place (CIP) procedures were developed to extend Protein A resin lifespan, but chromatograms cannot reliably quantify any remaining contaminants over repeated cycles. To study resin fouling in situ, we coupled affinity chromatography and Fourier transform infrared (FTIR) spectroscopy for the first time, by embedding an attenuated total reflection (ATR) sensor inside a micro-scale column while measuring the UV 280 nm and conductivity. Our approach quantified the in-column protein concentration in the resin bed and determined protein conformation. Our results show that Protein A ligand leached during CIP. We also found that host cell proteins bound to the Protein A resin even more strongly than mAbs and that typical CIP conditions do not remove all fouling contaminants. The insights derived from in-column ATR-FTIR spectroscopic monitoring could contribute to mAb purification quality assurance as well as guide the development of more effective CIP conditions to optimise resin lifespan.
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Affiliation(s)
- Maxime Boulet-Audet
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK.,Department of Life Sciences, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Sergei G Kazarian
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Bernadette Byrne
- Department of Life Sciences, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
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