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Beck J, Hochdaninger G, Carta G, Hahn R. Resin structure impacts two-component protein adsorption and separation in anion exchange chromatography. J Chromatogr A 2023; 1705:464208. [PMID: 37453173 DOI: 10.1016/j.chroma.2023.464208] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/07/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
The influence of the resin structure, on the competitive binding and separation of a two-component protein mixture with anion exchange resins is evaluated using conalbumin and green fluorescent protein as a model system. Two macroporous resins, one with large open pores and one with smaller pores, are compared to a resin with grafted polymers. Investigations include measurements of single and two-component isotherms, batch uptake kinetics and two-component column breakthrough. On both macroporous resins, the weaker binding protein, conalbumin, is displaced by the stronger binding green fluorescent protein. For the large pore resin, this results in a pronounced overshoot and efficient separation by frontal chromatography. The polymer-grafted resin exhibits superior capacity and kinetics for one-component adsorption, but is unable to achieve separation due to strongly hindered counter-diffusion. Intermediate separation efficiency is obtained with the smaller pore resin. Confocal laser scanning microscopy provides a mechanistic explanation of the underlying intra-particle diffusional phenomena revealing whether unhindered counter-diffusion of the displaced protein can occur or not. This study demonstrates that the resin's intra-particle structure and its effects on diffusional transport are crucial for an efficient separation process. The novelty of this work lies in its comprehensive nature which includes examples of the three most commonly used resin structures: a small pore agarose matrix, a large-pore polymeric matrix, and a polymer grafted resin. Comparison of the protein adsorption properties of these materials provides valuable clues about advantages and disadvantages of each for anion exchange chromatography applications.
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Affiliation(s)
- Jürgen Beck
- Institute of Bioprocess Science and Engineering, Department of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Georg Hochdaninger
- Institute of Bioprocess Science and Engineering, Department of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Giorgio Carta
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Rainer Hahn
- Institute of Bioprocess Science and Engineering, Department of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Austria.
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2
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Kimerer LK, Pabst TM, Hunter AK, Carta G. Role of configurational flexibility on the adsorption kinetics of bivalent bispecific antibodies on porous cation exchange resins. J Chromatogr A 2021; 1655:462479. [PMID: 34461348 DOI: 10.1016/j.chroma.2021.462479] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/12/2021] [Accepted: 08/13/2021] [Indexed: 11/18/2022]
Abstract
The adsorption kinetics of a monoclonal antibody (mAb) used as a reference and of bivalent bispecific antibodies (BiSAb) on a macroporous cation exchanger is studied experimentally by examining the transient patterns of bound protein within the particles using confocal microscopy for a range of protein concentrations, buffer concentrations and pH, and temperatures. The mAb adsorption kinetics is controlled by pore diffusion and conforms to the classical shrinking core model. While the mAb adsorption rate increases with temperature, the ratio of effective and free solution diffusivity, De /D0, remains constant and has a value of 0.20. The BiSAb's structure is comprised of scFv domains that are genetically fused to a framework IgG through flexible peptide linkers which results in conformational flexibility leading to multiple binding forms with varying affinity for the adsorbent surface. As a result, adsorption of the BiSAbs shows complex patterns of total bound protein within the particles. These BiSAb adsorption patterns are influenced by buffer ionic strength, pH, and temperature in unique ways. Sharper intraparticle profiles are observed for conditions where the binding strength is greater (lower buffer concentration and/or pH) or when the protein is chemically crosslinked to restrict configurational flexibility. Temperature affects the BiSAb pore diffusivity as well as the interconversion kinetics. While the effects of temperature on BiSAb transport are also described by a constant De /D0 = 0.15, the temperature also affects the rate of interconversion between binding forms leading to faster equilibration at higher temperatures. A phenomenological model indicates that the interplay of pore diffusion and adsorption with the kinetically limited interconversion between binding forms is responsible for the experimental trends.
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Affiliation(s)
- Lucas K Kimerer
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Timothy M Pabst
- Purification Process Sciences, BioPharmaceuticals Development, AstraZeneca, Gaithersburg, MD, USA
| | - Alan K Hunter
- Purification Process Sciences, BioPharmaceuticals Development, AstraZeneca, Gaithersburg, MD, USA
| | - Giorgio Carta
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA, USA.
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3
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Patterns of protein adsorption in ion-exchange particles and columns: Evolution of protein concentration profiles during load, hold, and wash steps predicted for pore and solid diffusion mechanisms. J Chromatogr A 2021; 1653:462412. [PMID: 34320430 DOI: 10.1016/j.chroma.2021.462412] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 11/20/2022]
Abstract
Elucidation of protein transport mechanism in ion exchanges is essential to model separation performance. In this work we simulate intraparticle adsorption profiles during batch adsorption assuming typical process conditions for pore, solid and parallel diffusion. Artificial confocal laser scanning microscopy images are created to identify apparent differences between the different transport mechanisms. Typical sharp fronts for pore diffusion are characteristic for Langmuir equilibrium constants of KL ≥1. Only at KL = 0.1 and lower, the profiles are smooth and practically indistinguishable from a solid diffusion mechanism. During hold and wash steps, at which the interstitial buffer is removed or exchanged, continuation of diffusion of protein molecules is significant for solid diffusion due to the adsorbed phase concentration driving force. For pore diffusion, protein mobility is considerable at low and moderate binding strength. Only when pore diffusion if completely dominant, and the binding strength is very high, protein mobility is low enough to restrict diffusion out of the particles. Simulation of column operation reveals substantial protein loss when operating conditions are not adjusted appropriately.
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4
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Sarwar MS, Simon U, Dimartino S. Experimental investigation and mass transfer modelling of 3D printed monolithic cation exchangers. J Chromatogr A 2021; 1646:462125. [PMID: 33894456 DOI: 10.1016/j.chroma.2021.462125] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 03/24/2021] [Accepted: 03/25/2021] [Indexed: 11/27/2022]
Abstract
3D printing has recently found application in chromatography as a means to create ordered stationary phases with improved separation efficiency. Currently, 3D printed stationary phases are limited by the lack of 3D printing materials suitable for chromatographic applications, and require a strict compromise in terms of desired resolution, model size and the associated print time. Modelling of mass transfer in 3D printed monoliths is also fundamental to understand and further optimise separation performance of 3D printed stationary phases. In this work, a novel 3D printing material was formulated and employed to fabricate monolithic cation exchangers (CEXs) with carboxyl functionalities. CEXs were printed with ligand densities of 0.7, 1.4, 2.1 and 2.8 mmol/g and used in batch adsorption experiments with lysozyme as model protein. All CEXs demonstrated high binding strength towards lysozyme, with maximum binding capacities of up to 108 mg/mL. The experimental results were described using mass transfer models based on lumped pore diffusion and lumped solid diffusion mechanisms adapted to reflect the complex geometry of the 3D printed monoliths. An exact 3D model as well as less computationally demanding 1D and 2D approximations were evaluated in terms of their quality to capture the experimental trend of batch adsorption kinetic data. Overall, the model results indicate that mass transfer in the fabricated CEXs is mostly controlled by pore diffusion at high protein concentrations in the mobile phase, with solid diffusion becoming important at low protein concentrations. Also, the kinetic data were approximated equally well by both the full 3D model as well as the 2D approximation, indicating leaner mathematical models of lower dimensionality can be employed to describe mass transfer in complex three dimensional geometries. We believe this work will help spur the development of 3D printable materials for separations and aid in the development of quantitative platforms to evaluate and optimise the performance of 3D printed monoliths.
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Affiliation(s)
- M Sulaiman Sarwar
- Institute for Bioengineering, The School of Engineering, The University of Edinburgh, Edinburgh EH9 3DW, UK
| | - Ursula Simon
- Institute for Bioengineering, The School of Engineering, The University of Edinburgh, Edinburgh EH9 3DW, UK
| | - Simone Dimartino
- Institute for Bioengineering, The School of Engineering, The University of Edinburgh, Edinburgh EH9 3DW, UK.
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5
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Yu L, Sun Y. Recent advances in protein chromatography with polymer-grafted media. J Chromatogr A 2021; 1638:461865. [PMID: 33453656 DOI: 10.1016/j.chroma.2020.461865] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 12/22/2020] [Accepted: 12/28/2020] [Indexed: 01/19/2023]
Abstract
The strategy of using polymer-grafted media is effective to create protein chromatography of high capacity and uptake rate, giving rise to an excellent performance in high-throughput protein separation due to its high dynamic binding capacity. Taking the scientific development and technological innovation of protein chromatography as the objective, this review is devoted to an overview of polymer-grafted media reported in the last five years, including their fabrication routes, protein adsorption and chromatography, mechanisms behind the adsorption behaviors, limitations of polymer-grafted media and chromatographic operation strategies. Particular emphasis is placed on the elaboration and discussion on the behaviors of ion-exchange chromatography (IEC) with polymer-grafted media because IEC is the most suitable chromatographic mode for this kind of media. Recent advances in both the theoretical and experimental investigations on polymer-grafted media are discussed by focusing on their implications to the rational design of novel chromatographic media and mobile phase conditions for the development of high-performance protein chromatography. It is concluded that polymer-grafted media are suitable for development of IEC and mixed-mode chromatography with charged and low hydrophobic ligands, but not for hydrophobic interaction chromatography with high hydrophobic ligands and affinity chromatography with ligands that have single binding site on the protein.
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Affiliation(s)
- Linling Yu
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Key Laboratory of Systems Bioengineering and Frontiers Science Center for Synthetic Biology (Ministry of Education), Tianjin University, Tianjin 300350, China
| | - Yan Sun
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Key Laboratory of Systems Bioengineering and Frontiers Science Center for Synthetic Biology (Ministry of Education), Tianjin University, Tianjin 300350, China.
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6
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Retention and diffusion characteristics of oligonucleotides in a solid phase with polymer grafted anion-exchanger. J Chromatogr A 2020; 1629:461495. [PMID: 32846340 DOI: 10.1016/j.chroma.2020.461495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/07/2020] [Accepted: 08/14/2020] [Indexed: 01/09/2023]
Abstract
In the chromatographic separation process of oligonucleotides (ONs), mechanistic understanding of their binding and diffusion processes is of significant importance to determine operating conditions in a fast and robust way. In this work, we determined the number of binding sites and the diffusivities of ONs in a polymer grafted anion exchange chromatography through linear gradient experiments (LGE) being carried out at selected four to five gradient slopes. Synthetic poly (T)s with length ranging from 3 to 90-mer were employed as a model of an antisense oligonucleotide with typical lengths of 10 - 30 bases. Comparison of the retention was also conducted between the grafted anion exchanger with a conventional ligand and an anion monolith disk. For the ONs up to 50 bases, the number of binding sites determined can be correlated with the length of ONs, and the grafted resin showed a better diffusion and narrower peak width compared to the nongrafted one. The retention behavior became similar for porous media when the longer ONs (> 50mer) were applied. The results obtained suggest that antisense ONs can be separated with grafted ligands without sacrificing mass transfer properties.
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7
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Kimerer LK, Pabst TM, Hunter AK, Carta G. Chromatographic behavior of bivalent bispecific antibodies on cation exchange columns. I. Experimental observations and phenomenological model. J Chromatogr A 2019; 1601:121-132. [DOI: 10.1016/j.chroma.2019.04.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 04/03/2019] [Accepted: 04/07/2019] [Indexed: 12/24/2022]
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8
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Pereira Aguilar P, Schneider TA, Wetter V, Maresch D, Ling WL, Tover A, Steppert P, Jungbauer A. Polymer-grafted chromatography media for the purification of enveloped virus-like particles, exemplified with HIV-1 gag VLP. Vaccine 2019; 37:7070-7080. [PMID: 31300289 DOI: 10.1016/j.vaccine.2019.07.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 06/13/2019] [Accepted: 07/01/2019] [Indexed: 01/08/2023]
Abstract
Polymer-grafted chromatography media, especially ion exchangers, are high performance materials for protein purification. However, due to the pore size limitation, conventional chromatography beads are usually not considered for the downstream processing of large biomolecules such as virus-like particles (VLPs). Contrariwise, since the outer surface of the chromatography beads provides satisfactory binding capacity for VLPs and impurities of smaller size can bind inside of the beads, conventional porous beads should be considered for VLP capture and purification. We used HIV-1 gag VLPs with a diameter of 100-200 nm as a model to demonstrate that polymer-grafted anion exchangers are suitable for the purification of bionanoparticles. The equilibrium binding capacity was 1 × 1013 part/mL resin. Moderate salt concentration up to 100 mM NaCl did not affect binding, allowing direct loading of cell culture supernatant onto the column for purification. Dynamic binding capacity at 10% breakthrough, when loading cell culture supernatant, was approximately 6 × 1011 part/mL column; only 1-log lower than for monoliths. Endonuclease treatment of the cell culture supernatant did not increase the dynamic binding capacity, suggesting that dsDNA does not compete for the binding sites of VLPs. Nevertheless, due to simultaneous elution of particles and dsDNA, endonuclease treatment is required to reduce dsDNA contamination in the product. Proteomic analysis revealed that HIV-1 gag VLPs contain different host cell proteins in their cargo. This cargo is composed of conserved proteins and other proteins that vary from one particle population to another, as well as from batch to batch. This process allowed the separation of different particle populations. HIV-1 gag VLPs were directly captured and purified from cell culture supernatant with a total particle recovery in the elution of about 35%. Columns packed with beads can be scaled to practically any dimension and therefore a tailored design of the process is possible.
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Affiliation(s)
| | | | - Viktoria Wetter
- Austrian Centre of Industrial Biotechnology, Vienna, Austria
| | - Daniel Maresch
- Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, Austria
| | - Wai Li Ling
- Univ. Grenoble Alpes, CEA, CNRS, IBS, F-38000 Grenoble, France
| | | | - Petra Steppert
- Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, Austria
| | - Alois Jungbauer
- Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, Austria; Austrian Centre of Industrial Biotechnology, Vienna, Austria.
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9
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Zhao Y, Yu L, Dong X, Sun Y. Protein adsorption to poly(ethylenimine)-modified sepharose FF: VII. Complicated effects of pH. J Chromatogr A 2018; 1580:72-79. [DOI: 10.1016/j.chroma.2018.10.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 10/11/2018] [Accepted: 10/16/2018] [Indexed: 12/24/2022]
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10
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Characterization of new polymer-grafted protein cation exchangers developed by partial neutralization of carboxyl groups derivatized by modification of poly(ethylenimine)-Sepharose with succinic anhydride. J Chromatogr A 2018; 1550:28-34. [DOI: 10.1016/j.chroma.2018.03.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 03/19/2018] [Accepted: 03/22/2018] [Indexed: 01/06/2023]
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11
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Zhao Y, Dong X, Yu L, Liu Y, Sun Y. Implications from protein adsorption onto anion- and cation-exchangers derivatized by modification of poly(ethylenimine)-Sepharose FF with succinic anhydride. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.01.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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12
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Janakiraman VN, Solé M, Maria S, Pezzini J, Cabanne C, Santarelli X. Comparative study of strong cation exchangers: Structure-related chromatographic performances. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1080:1-10. [DOI: 10.1016/j.jchromb.2018.02.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 02/07/2018] [Accepted: 02/10/2018] [Indexed: 11/26/2022]
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13
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Li X, Liu Y, Sun Y. Alginate-grafted Sepharose FF: A novel polymeric ligand-based cation exchanger for high-capacity protein chromatography. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2017.06.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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14
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Keller WR, Evans ST, Ferreira G, Robbins D, Cramer SM. Understanding operational system differences for transfer of miniaturized chromatography column data using simulations. J Chromatogr A 2017; 1515:154-163. [DOI: 10.1016/j.chroma.2017.07.091] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 07/21/2017] [Accepted: 07/31/2017] [Indexed: 11/26/2022]
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15
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Basconi JE, Carta G, Shirts MR. Effects of protein properties on adsorption and transport in polymer‐grafted ion exchangers: A multiscale modeling study. AIChE J 2017. [DOI: 10.1002/aic.15798] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Joseph E. Basconi
- Dept. of Chemical EngineeringUniversity of VirginiaCharlottesville VA22904
| | - Giorgio Carta
- Dept. of Chemical EngineeringUniversity of VirginiaCharlottesville VA22904
| | - Michael R. Shirts
- Dept. of Chemical and Biological EngineeringUniversity of Colorado BoulderBoulder CO80309
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16
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Walch N, Jungbauer A. Continuous desalting of refolded protein solution improves capturing in ion exchange chromatography: A seamless process. Biotechnol J 2017; 12. [DOI: 10.1002/biot.201700082] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 03/20/2017] [Accepted: 04/10/2017] [Indexed: 01/14/2023]
Affiliation(s)
- Nicole Walch
- Austrian Centre of Industrial Biotechnology; Vienna Austria
| | - Alois Jungbauer
- Austrian Centre of Industrial Biotechnology; Vienna Austria
- Department of Biotechnology; University of Natural Resources and Life Sciences; Vienna Austria
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17
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X-ray computed tomography of packed bed chromatography columns for three dimensional imaging and analysis. J Chromatogr A 2017; 1487:108-115. [DOI: 10.1016/j.chroma.2017.01.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 01/04/2017] [Accepted: 01/05/2017] [Indexed: 11/17/2022]
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18
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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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19
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Angelo JM, Lenhoff AM. Determinants of protein elution rates from preparative ion-exchange adsorbents. J Chromatogr A 2016; 1440:94-104. [PMID: 26948763 PMCID: PMC4795180 DOI: 10.1016/j.chroma.2016.02.048] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 02/05/2016] [Accepted: 02/14/2016] [Indexed: 11/26/2022]
Abstract
The rate processes involved in elution in preparative chromatography can affect both peak resolution and hence selectivity as well as practical factors such as facility fit. These processes depend on the physical structure of the adsorbent particles, the amount of bound solute, the solution conditions for operation or some combination of these factors. Ion-exchange adsorbents modified with covalently attached or grafted polymer layers have become widely used in preparative chromatography. Their often easily accessible microstructures offer substantial binding capacities for biomolecules, but elution has sometimes been observed to be undesirably slow. In order to determine which physicochemical phenomena control elution behavior, commercially available cellulosic, dextran-grafted and unmodified agarose materials were characterized here by their elution profiles at various conditions, including different degrees of loading. Elution data were analyzed under the assumption of purely diffusion-limited control, including the role of pore structure properties such as porosity and tortuosity. In general, effective elution rates decreased with the reduction of accessible pore volume, but differences among different proteins indicated the roles of additional factors. Additional measurements and analysis, including the use of confocal laser scanning microscopy to observe elution within single chromatographic particles, indicated the importance of protein association within the particle during elution. The use of protein stabilizing agents was explored in systems presenting atypical elution behavior, and l-arginine and disaccharide excipients were shown to alleviate the effects for one protein, lysozyme, in the presence of sodium chloride. Incorporation of these excipients into eluent buffer gave rise to faster elution and significantly lower pool volumes in elution from polymer-modified adsorbents.
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Affiliation(s)
- James M Angelo
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA
| | - Abraham M Lenhoff
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA.
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21
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Zhang S, Daniels W, Salm J, Glynn J, Martin J, Gallo C, Godavarti R, Carta G. Nature of foulants and fouling mechanism in the Protein A MabSelect resin cycled in a monoclonal antibody purification process. Biotechnol Bioeng 2015; 113:141-9. [DOI: 10.1002/bit.25706] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 06/26/2015] [Accepted: 07/10/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Shaojie Zhang
- Department of Chemical Engineering; University of Virginia; Charlottesville Virginia
| | | | | | | | | | | | | | - Giorgio Carta
- Department of Chemical Engineering; University of Virginia; Charlottesville Virginia
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22
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Use of MiniColumns for linear isotherm parameter estimation and prediction of benchtop column performance. J Chromatogr A 2015; 1418:94-102. [DOI: 10.1016/j.chroma.2015.09.038] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 09/09/2015] [Accepted: 09/14/2015] [Indexed: 11/19/2022]
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23
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Zhang S, Xu K, Daniels W, Salm J, Glynn J, Martin J, Gallo C, Godavarti R, Carta G. Structural and functional characteristics of virgin and fouled Protein A MabSelect resin cycled in a monoclonal antibody purification process. Biotechnol Bioeng 2015; 113:367-75. [DOI: 10.1002/bit.25708] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 06/26/2015] [Accepted: 07/10/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Shaojie Zhang
- Department of Chemical Engineering; University of Virginia; Charlottesville Virginia 22904
| | - Kerui Xu
- Department of Chemistry; University of Virginia; Charlottesville Virginia
| | | | | | | | | | | | | | - Giorgio Carta
- Department of Chemical Engineering; University of Virginia; Charlottesville Virginia 22904
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24
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Woo J, Parimal S, Brown MR, Heden R, Cramer SM. The effect of geometrical presentation of multimodal cation-exchange ligands on selective recognition of hydrophobic regions on protein surfaces. J Chromatogr A 2015; 1412:33-42. [DOI: 10.1016/j.chroma.2015.07.072] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 07/17/2015] [Accepted: 07/17/2015] [Indexed: 01/23/2023]
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25
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Adsorption equilibrium and kinetics of monomer–dimer monoclonal antibody mixtures on a cation exchange resin. J Chromatogr A 2015; 1402:46-59. [DOI: 10.1016/j.chroma.2015.05.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/30/2015] [Accepted: 05/05/2015] [Indexed: 11/22/2022]
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26
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Guo J, Carta G. Unfolding and aggregation of monoclonal antibodies on cation exchange columns: Effects of resin type, load buffer, and protein stability. J Chromatogr A 2015; 1388:184-94. [DOI: 10.1016/j.chroma.2015.02.047] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 02/14/2015] [Accepted: 02/16/2015] [Indexed: 10/24/2022]
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27
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Basconi JE, Carta G, Shirts MR. Multiscale modeling of protein adsorption and transport in macroporous and polymer-grafted ion exchangers. AIChE J 2014. [DOI: 10.1002/aic.14621] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Joseph E. Basconi
- Dept. of Chemical Engineering; University of Virginia; Charlottesville VA
| | - Giorgio Carta
- Dept. of Chemical Engineering; University of Virginia; Charlottesville VA
| | - Michael R. Shirts
- Dept. of Chemical Engineering; University of Virginia; Charlottesville VA
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Protein adsorption to poly(ethylenimine)-modified Sepharose FF. IV. Dynamic adsorption and elution behaviors. J Chromatogr A 2014; 1362:218-24. [PMID: 25179288 DOI: 10.1016/j.chroma.2014.08.052] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 08/12/2014] [Accepted: 08/13/2014] [Indexed: 11/21/2022]
Abstract
We have previously investigated bovine serum albumin (BSA) uptake to poly(ethylenimine) (PEI)-grafted Sepharose FF. It was found that there was a critical ionic capacity (cIC; 600mmol/L) for BSA, above which the protein adsorption capacity and uptake kinetics increased drastically. In this work, two poly(ethylenimine) (PEI)-grafted resins with IC values of 271mmol/L (FF-PEI-L270) and 683mmol/L (FF-PEI-L680), which were below and above the cIC, respectively, were chosen to investigate the breakthrough and linear gradient elution (LGE) behaviors of BSA. Commercially available anion exchanger, Q Sepharose FF, was used for comparison. The DBC values of FF-PEI-L680 were much higher in the entire residence time range (2-10min) than the other two resins due to its high static adsorption capacity and uptake kinetics. At a residence time of 5.0min, the DBC of FF-PEI-L680 (104mg/mL) was about seven times that of FF-PEI-L270 and three times that of Q Sepharose FF. A rise-fall trend of the DBCs with increasing ionic strength (IS) was found for all the three resins studied, indicating the presence of electrostatic exclusion for protein uptake at low IS. With increasing NaCl concentration from 20 to 200mmol/L, FF-PEI-L680 kept very high DBC values (64-114mg/mL). In addition, FF-PEI-L270 showed more favorable adsorption properties than Q Sepharose FF at 100-300mmol/L NaCl. These results proved that the three-dimensional grafting ion exchange layer on the PEI resins enhanced their tolerance to IS. In the study of LGE, the three resins showed similar elution behaviors and no distinct peak tailings were observed. The salt concentrations at the elution peaks (IR) were in the order of FF-PEI-L680>FF-PEI-L270>Q Sepharose FF, indicating that the elution for the PEI resins needed higher salt concentrations, which was also an appearance of the salt-tolerant feature of the PEI resins. When protein loading amount was increased to the value equivalent to the DBC at 10% breakthrough, the adsorbed BSA could be eluted at lower salt concentrations. The chromatographic study has provided new insights into the practical application of the PEI-based anion exchangers.
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29
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Unfolding and aggregation of a glycosylated monoclonal antibody on a cation exchange column. Part I. Chromatographic elution and batch adsorption behavior. J Chromatogr A 2014; 1356:117-28. [DOI: 10.1016/j.chroma.2014.06.037] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 06/12/2014] [Accepted: 06/12/2014] [Indexed: 11/20/2022]
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30
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Hong Y, Liu N, Wei W, Yu LL, Ma G, Sun Y. Protein adsorption to poly(ethylenimine)-modified Sepharose FF: III. Comparison between different proteins. J Chromatogr A 2014; 1342:30-6. [DOI: 10.1016/j.chroma.2014.03.036] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 03/07/2014] [Accepted: 03/11/2014] [Indexed: 10/25/2022]
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31
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Hanke AT, Ottens M. Purifying biopharmaceuticals: knowledge-based chromatographic process development. Trends Biotechnol 2014; 32:210-20. [DOI: 10.1016/j.tibtech.2014.02.001] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 01/24/2014] [Accepted: 02/04/2014] [Indexed: 01/04/2023]
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32
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Buyel JF, Fischer R. Generic chromatography-based purification strategies accelerate the development of downstream processes for biopharmaceutical proteins produced in plants. Biotechnol J 2014; 9:566-77. [PMID: 24478119 DOI: 10.1002/biot.201300548] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 01/17/2014] [Accepted: 01/27/2014] [Indexed: 01/08/2023]
Abstract
Plants offer a valuable alternative to cultured mammalian cells for the production of recombinant biopharmaceutical proteins. However, the target protein typically represents only a minor fraction of the total protein in the initial plant extract, which means that the development of product-specific chromatography-based purification strategies is often laborious and expensive. To address this challenge, we designed a generic downstream process that is suitable for the purification of recombinant proteins with diverse properties from plant production platforms. This was achieved by focusing on the binding behavior of tobacco host cell proteins (HCPs) to a broad set of chromatography resins under different pH and conductivity conditions. Strong cation exchanger and salt-tolerant anion exchanger resins exhibited the best resolution of tobacco HCPs among the 13 tested resins, and their selectivity was easy to manipulate through the adjustment of pH and conductivity. The advantages, such as direct capture of a target protein from leaf extract, and limitations, such as low binding capacity, of various chromatography ligands and resins are discussed. We also address the most useful applications of the chromatography ligands, namely recovery of proteins with a certain pI, in a downstream process that aims to purify diverse plant-derived biopharmaceutical proteins. Based on these results, we describe generic purification schemes that are suitable for acidic, neutral, and basic target proteins, as a first step toward the development of industrial platform processes.
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Affiliation(s)
- Johannes F Buyel
- Institute for Molecular Biotechnology, RWTH Aachen University, Aachen, Germany.
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33
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Vetter TA, Ferreira G, Robbins D, Carta G. Mixed-Beds of Strong and Weak Anion Exchange Resins for Protein Separations with Step-Induced pH Gradients. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2013.860169] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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34
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Adsorption of polyethylene-glycolated bovine serum albumin on macroporous and polymer-grafted anion exchangers. J Chromatogr A 2014; 1326:29-38. [DOI: 10.1016/j.chroma.2013.12.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 11/27/2013] [Accepted: 12/04/2013] [Indexed: 11/24/2022]
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35
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Characteristics and Application of Porous Ceramic/Agarose Composite Beads Derived as an Affinity Medium. Chromatographia 2013. [DOI: 10.1007/s10337-013-2578-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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36
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Angelo JM, Cvetkovic A, Gantier R, Lenhoff AM. Characterization of cross-linked cellulosic ion-exchange adsorbents: 1. Structural properties. J Chromatogr A 2013; 1319:46-56. [PMID: 24188996 DOI: 10.1016/j.chroma.2013.10.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 09/28/2013] [Accepted: 10/01/2013] [Indexed: 11/18/2022]
Abstract
The structural characteristics of the HyperCel family of cellulosic ion-exchange materials (Pall Corporation) were assessed using methods to gauge the pore dimensions and the effect of ionic strength on intraparticle architecture. Inverse size exclusion chromatography (ISEC) was applied to the S and STAR AX HyperCel derivatives. The theoretical analysis yielded an average pore radius for each material of about 5nm, with a particularly narrow pore-size distribution. Electron microscopy techniques were used to visualize the particle structure and relate it to macroscopic experimental data. Microscopy of Q and STAR AX HyperCel anion exchangers presented some qualitative differences in pore structure that can be attributed to the derivatization using conventional quaternary ammonium and salt-tolerant ligands, respectively. Finally, the effect of ionic strength was studied through the use of salt breakthrough experiments to determine to what extent Donnan exclusion plays a role in restricting the accessible pore volume for small ions. It was determined that Donnan effects were prevalent at total ionic strengths (TIS) less than 150mM, suggesting the presence of a ligand-containing partitioning volume within the pore space.
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Affiliation(s)
- James M Angelo
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA
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37
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Wu Y, Simons J, Hooson S, Abraham D, Carta G. Protein and virus-like particle adsorption on perfusion chromatography media. J Chromatogr A 2013; 1297:96-105. [DOI: 10.1016/j.chroma.2013.04.062] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Revised: 04/17/2013] [Accepted: 04/19/2013] [Indexed: 11/16/2022]
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38
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Close EJ, Salm JR, Iskra T, Sørensen E, Bracewell DG. Fouling of an anion exchange chromatography operation in a monoclonal antibody process: Visualization and kinetic studies. Biotechnol Bioeng 2013; 110:2425-35. [PMID: 23483524 PMCID: PMC3840701 DOI: 10.1002/bit.24898] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Revised: 02/19/2013] [Accepted: 02/25/2013] [Indexed: 11/10/2022]
Abstract
Fouling of chromatographic resins over their operational lifetimes can be a significant problem for commercial bioseparations. In this article, scanning electron microscopy (SEM), batch uptake experiments, confocal laser scanning microscopy (CLSM) and small-scale column studies were applied to characterize a case study where fouling had been observed during process development. The fouling was found to occur on an anion exchange (AEX) polishing step following a protein A affinity capture step in a process for the purification of a monoclonal antibody. Fouled resin samples analyzed by SEM and batch uptake experiments indicated that after successive batch cycles, significant blockage of the pores at the resin surface occurred, thereby decreasing the protein uptake rate. Further studies were performed using CLSM to allow temporal and spatial measurements of protein adsorption within the resin, for clean, partially fouled and extensively fouled resin samples. These samples were packed within a miniaturized flowcell and challenged with fluorescently labeled albumin that enabled in situ measurements. The results indicated that the foulant has a significant impact on the kinetics of adsorption, severely decreasing the protein uptake rate, but only results in a minimal decrease in saturation capacity. The impact of the foulant on the kinetics of adsorption was further investigated by loading BSA onto fouled resin over an extended range of flow rates. By decreasing the flow rate during BSA loading, the capacity of the resin was recovered. These data support the hypothesis that the foulant is located on the particle surface, only penetrating the particle to a limited degree. The increased understanding into the nature of the fouling can help in the continued process development of this industrial example. Scanning electron microscopy (SEM), batch uptake experiments, confocal laser scanning microscopy (CLSM) and small-scale column experiments were applied to characterize a case study where fouling had been observed on an anion exchange chromatography in a monoclonal antibody process. The results suggest the foulant is located on the particle surface, resulting in a minimal decrease in saturation capacity, but having a significant impact on the kinetics of adsorption, severely decreasing protein uptake rate.
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Affiliation(s)
- Edward J Close
- The Advanced Centre for Biochemical Engineering, Department of Biochemical Engineering, University College London, Torrington Place, London, UK
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39
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Blaschke T, Werner A, Hasse H. Microcalorimetric study of the adsorption of native and mono-PEGylated bovine serum albumin on anion-exchangers. J Chromatogr A 2013; 1277:58-68. [DOI: 10.1016/j.chroma.2012.12.057] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 12/17/2012] [Accepted: 12/20/2012] [Indexed: 11/28/2022]
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40
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Corbett R, Carta G, Iskra T, Gallo C, Godavarti R, Salm JR. Structure and protein adsorption mechanisms of clean and fouled tentacle-type anion exchangers used in a monoclonal antibody polishing step. J Chromatogr A 2013; 1278:116-25. [DOI: 10.1016/j.chroma.2013.01.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Accepted: 01/01/2013] [Indexed: 10/27/2022]
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41
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Perez-Almodovar EX, Wu Y, Carta G. Multicomponent adsorption of monoclonal antibodies on macroporous and polymer grafted cation exchangers. J Chromatogr A 2012; 1264:48-56. [DOI: 10.1016/j.chroma.2012.09.064] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 09/20/2012] [Accepted: 09/20/2012] [Indexed: 11/25/2022]
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42
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Hahn R. Methods for characterization of biochromatography media. J Sep Sci 2012; 35:3001-32. [DOI: 10.1002/jssc.201200770] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Revised: 08/22/2012] [Accepted: 08/23/2012] [Indexed: 11/11/2022]
Affiliation(s)
- Rainer Hahn
- Department of Biotechnology; University of Natural Resources and Life Sciences; Vienna Austria
- Austrian Centre of Industrial Biotechnology; Vienna Austria
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43
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Counterion effects on protein adsorption equilibrium and kinetics in polymer-grafted cation exchangers. J Chromatogr A 2012; 1253:83-93. [DOI: 10.1016/j.chroma.2012.06.100] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Revised: 06/28/2012] [Accepted: 06/29/2012] [Indexed: 11/24/2022]
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44
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Tao Y, Almodovar EXP, Carta G, Ferreira G, Robbins D. Adsorption kinetics of deamidated antibody variants on macroporous and dextran-grafted cation exchangers. III. Microscopic studies. J Chromatogr A 2011; 1218:8027-35. [DOI: 10.1016/j.chroma.2011.09.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 09/02/2011] [Accepted: 09/05/2011] [Indexed: 10/17/2022]
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