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Jukič M, Kralj S, Kolarič A, Bren U. Design of Tetra-Peptide Ligands of Antibody Fc Regions Using In Silico Combinatorial Library Screening. Pharmaceuticals (Basel) 2023; 16:1170. [PMID: 37631085 PMCID: PMC10459493 DOI: 10.3390/ph16081170] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/09/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Peptides, or short chains of amino-acid residues, are becoming increasingly important as active ingredients of drugs and as crucial probes and/or tools in medical, biotechnological, and pharmaceutical research. Situated at the interface between small molecules and larger macromolecular systems, they pose a difficult challenge for computational methods. We report an in silico peptide library generation and prioritization workflow using CmDock for identifying tetrapeptide ligands that bind to Fc regions of antibodies that is analogous to known in vitro recombinant peptide libraries' display and expression systems. The results of our in silico study are in accordance with existing scientific literature on in vitro peptides that bind to antibody Fc regions. In addition, we postulate an evolving in silico library design workflow that will help circumvent the combinatorial problem of in vitro comprehensive peptide libraries by focusing on peptide subunits that exhibit favorable interaction profiles in initial in silico peptide generation and testing.
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Affiliation(s)
- Marko Jukič
- Laboratory of Physical Chemistry and Chemical Thermodynamics, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
- Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, Glagoljaška ulica 8, SI-6000 Koper, Slovenia
- Institute of Environmental Protection and Sensors, Beloruska ulica 7, SI-2000 Maribor, Slovenia
| | - Sebastjan Kralj
- Laboratory of Physical Chemistry and Chemical Thermodynamics, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
| | - Anja Kolarič
- Laboratory of Physical Chemistry and Chemical Thermodynamics, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
- Institute of Environmental Protection and Sensors, Beloruska ulica 7, SI-2000 Maribor, Slovenia
| | - Urban Bren
- Laboratory of Physical Chemistry and Chemical Thermodynamics, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia
- Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, Glagoljaška ulica 8, SI-6000 Koper, Slovenia
- Institute of Environmental Protection and Sensors, Beloruska ulica 7, SI-2000 Maribor, Slovenia
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2
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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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3
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Pinto IF, Soares RRG, Aires‐Barros MR, Chu V, Conde JP, Azevedo AM. Optimizing the Performance of Chromatographic Separations Using Microfluidics: Multiplexed and Quantitative Screening of Ligands and Target Molecules. Biotechnol J 2019; 14:e1800593. [DOI: 10.1002/biot.201800593] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 05/20/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Inês F. Pinto
- INESC Microsistemas e NanotecnologiasIN ‐ Institute of Nanoscience and Nanotechnology Rua Alves Redol 9 1000‐029 Lisbon Portugal
- IBB ‐ Institute for Bioengineering and Biosciences Instituto Superior TécnicoUniversidade de Lisboa Avenida Rovisco Pais 1 1049‐001 Lisbon Portugal
| | - Ruben R. G. Soares
- INESC Microsistemas e NanotecnologiasIN ‐ Institute of Nanoscience and Nanotechnology Rua Alves Redol 9 1000‐029 Lisbon Portugal
- IBB ‐ Institute for Bioengineering and Biosciences Instituto Superior TécnicoUniversidade de Lisboa Avenida Rovisco Pais 1 1049‐001 Lisbon Portugal
| | - Maria R. Aires‐Barros
- IBB ‐ Institute for Bioengineering and Biosciences Instituto Superior TécnicoUniversidade de Lisboa Avenida Rovisco Pais 1 1049‐001 Lisbon Portugal
- Department of Bioengineering Instituto Superior TécnicoUniversidade de Lisboa Avenida Rovisco Pais 1 1049‐001 Lisbon Portugal
| | - Virginia Chu
- INESC Microsistemas e NanotecnologiasIN ‐ Institute of Nanoscience and Nanotechnology Rua Alves Redol 9 1000‐029 Lisbon Portugal
| | - João P. Conde
- INESC Microsistemas e NanotecnologiasIN ‐ Institute of Nanoscience and Nanotechnology Rua Alves Redol 9 1000‐029 Lisbon Portugal
- Department of Bioengineering Instituto Superior TécnicoUniversidade de Lisboa Avenida Rovisco Pais 1 1049‐001 Lisbon Portugal
| | - Ana M. Azevedo
- IBB ‐ Institute for Bioengineering and Biosciences Instituto Superior TécnicoUniversidade de Lisboa Avenida Rovisco Pais 1 1049‐001 Lisbon Portugal
- Department of Bioengineering Instituto Superior TécnicoUniversidade de Lisboa Avenida Rovisco Pais 1 1049‐001 Lisbon Portugal
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4
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Wei Y, Xu J, Zhang L, Fu Y, Xu X. Development of novel small peptide ligands for antibody purification. RSC Adv 2015. [DOI: 10.1039/c5ra07829f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Small peptide ligands which were designed based on the interactions with human immunoglobulin G (IgG) using the molecular simulations, can offer a potential alternative for mAb purification with elution condition at pH 9 and pH 3.
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Affiliation(s)
- Yuping Wei
- State
- Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
| | - Jiandong Xu
- State
- Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
| | - Liang Zhang
- State
- Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
| | - Yankai Fu
- State
- Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
| | - Xia Xu
- State
- Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
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5
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Tao Y, Ibraheem A, Conley L, Cecchini D, Ghose S. Evaluation of high-capacity cation exchange chromatography for direct capture of monoclonal antibodies from high-titer cell culture processes. Biotechnol Bioeng 2014; 111:1354-64. [PMID: 24420791 DOI: 10.1002/bit.25192] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 01/09/2014] [Accepted: 01/10/2014] [Indexed: 11/07/2022]
Abstract
Advances in molecular biology and cell culture technology have led to monoclonal antibody titers in excess of 10 g/L. Such an increase can pose concern to traditional antibody purification processes due to limitations in column hardware and binding capacity of Protein A resins. Recent development of high capacity cation exchangers can make cation exchange chromatography (CEX) a promising and economic alternative to Protein A capture. This work investigates the feasibility of using CEX for direct capture of monoclonal antibodies from high titer cell culture fluids. Two resin candidates were selected from seven newer generation cation exchangers for their higher binding capacity and selectivity. Two monoclonal antibodies with widely differing pI values were used to evaluate the capability of CEX as a platform capture step. Screening of loading pH and conductivity showed both resins to be capable of directly capturing both antibodies from undiluted cell culture fluid. At appropriate acidic pH range, product loading of over 65 g/L resin was achieved for both antibodies. A systematic design of experiment (DOE) approach was used to optimize the elution conditions for the CEX step. Elution pH showed the most significant impact on clearance of host cell proteins (HCPs). Under optimal conditions, HCP reduction factors in the range of 9-44 were achieved on the CEX step based on the pI of the antibody. Apart from comparing CEX directly to Protein A as the capture method, material from either modality was also processed through the subsequent polishing steps to compare product quality at the drug substance level. Process performance and product quality was found to be acceptable using the non-affinity based process scheme. The results shown here present a cheaper and higher capacity generic capture method for high-titer antibody processes.
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Affiliation(s)
- Yinying Tao
- Department of Process Biochemistry, Biogen Idec, 5000 Davis Drive, Research Triangle Park, North Carolina
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6
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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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7
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Metal-Chelating Nanopolymers for Antibody Purification from Human Plasma. Appl Biochem Biotechnol 2012; 168:1528-39. [DOI: 10.1007/s12010-012-9875-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 08/28/2012] [Indexed: 10/27/2022]
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8
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Sousa Â, Sousa F, Queiroz JA. Advances in chromatographic supports for pharmaceutical-grade plasmid DNA purification. J Sep Sci 2012; 35:3046-58. [DOI: 10.1002/jssc.201200307] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 05/28/2012] [Accepted: 06/02/2012] [Indexed: 01/04/2023]
Affiliation(s)
- Ângela Sousa
- CICS-UBI - Centro de Investigação em Ciências da Saúde; Universidade da Beira Interior; Covilhã Portugal
| | - Fani Sousa
- CICS-UBI - Centro de Investigação em Ciências da Saúde; Universidade da Beira Interior; Covilhã Portugal
| | - João A. Queiroz
- CICS-UBI - Centro de Investigação em Ciências da Saúde; Universidade da Beira Interior; Covilhã Portugal
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9
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Miesegaes G, Lute S, Strauss D, Read E, Venkiteshwaran A, Kreuzman A, Shah R, Shamlou P, Chen D, Brorson K. Monoclonal antibody capture and viral clearance by cation exchange chromatography. Biotechnol Bioeng 2012; 109:2048-58. [DOI: 10.1002/bit.24480] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Revised: 02/10/2012] [Accepted: 02/16/2012] [Indexed: 11/06/2022]
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10
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Effect of pH on protein adsorption capacity of strong cation exchangers with grafted layer. J Chromatogr A 2011; 1218:6987-94. [DOI: 10.1016/j.chroma.2011.07.097] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2011] [Revised: 07/27/2011] [Accepted: 07/28/2011] [Indexed: 11/22/2022]
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11
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Ralla K, Sohling U, Riechers D, Kasper C, Ruf F, Scheper T. Adsorption and separation of proteins by a smectitic clay mineral. Bioprocess Biosyst Eng 2010; 33:847-61. [DOI: 10.1007/s00449-010-0408-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2009] [Accepted: 01/12/2010] [Indexed: 10/19/2022]
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12
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Fogle J, Hsiung J. Understanding and mitigating conductivity transitions in weak cation exchange chromatography. J Chromatogr A 2010; 1217:660-6. [DOI: 10.1016/j.chroma.2009.11.099] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Revised: 11/07/2009] [Accepted: 11/30/2009] [Indexed: 11/30/2022]
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13
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Subramanian A, Roy S, Mascoli C, Hommerding J. Use of Modified Chitosan Macrospheres in the Selective Removal of Immunoglobulins. J LIQ CHROMATOGR R T 2009. [DOI: 10.1081/jlc-200029111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Anuradha Subramanian
- a Department of Chemical Engineering , University of Nebraska , Lincoln , Nebraska , 68588‐0126 , USA
| | - Swapan Roy
- b LigoChem Inc. , Fairfield , New Jersey , USA
| | | | - Jennifer Hommerding
- c Biosystems and Agricultural Engineering , University of Minnesota , St. Paul , Minnesota , USA
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14
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Wrzosek K, Gramblička M, Polakovič M. Influence of ligand density on antibody binding capacity of cation-exchange adsorbents. J Chromatogr A 2009; 1216:5039-44. [DOI: 10.1016/j.chroma.2009.04.073] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2008] [Revised: 03/22/2009] [Accepted: 04/23/2009] [Indexed: 10/20/2022]
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15
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Two-dimensional fluorescence difference gel electrophoresis for comparison of affinity and non-affinity based downstream processing of recombinant monoclonal antibody. J Chromatogr A 2009; 1216:4902-12. [DOI: 10.1016/j.chroma.2009.04.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Revised: 03/31/2009] [Accepted: 04/03/2009] [Indexed: 11/21/2022]
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16
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Yang H, Gurgel PV, Carbonell RG. Purification of human immunoglobulin G via Fc-specific small peptide ligand affinity chromatography. J Chromatogr A 2009; 1216:910-8. [DOI: 10.1016/j.chroma.2008.12.004] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2008] [Revised: 11/28/2008] [Accepted: 12/02/2008] [Indexed: 12/01/2022]
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17
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18
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Yang H, Gurgel P, Carbonell R. Hexamer peptide affinity resins that bind the Fc region of human immunoglobulin G. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1747-0285.2006.00342.x] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Dieterle M, Blaschke T, Hasse H. Microcalorimetric study of adsorption of human monoclonal antibodies on cation exchange chromatographic materials. J Chromatogr A 2008; 1205:1-9. [DOI: 10.1016/j.chroma.2008.07.023] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2008] [Revised: 07/02/2008] [Accepted: 07/09/2008] [Indexed: 10/21/2022]
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20
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Ahamed T, Chilamkurthi S, Nfor BK, Verhaert PD, van Dedem GW, van der Wielen LA, Eppink MH, van de Sandt EJ, Ottens M. Selection of pH-related parameters in ion-exchange chromatography using pH-gradient operations. J Chromatogr A 2008; 1194:22-9. [DOI: 10.1016/j.chroma.2007.11.111] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2007] [Revised: 11/27/2007] [Accepted: 11/30/2007] [Indexed: 10/22/2022]
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21
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Pabst TM, Carta G. pH transitions in cation exchange chromatographic columns containing weak acid groups. J Chromatogr A 2007; 1142:19-31. [PMID: 16978635 DOI: 10.1016/j.chroma.2006.08.066] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2006] [Revised: 08/17/2006] [Accepted: 08/28/2006] [Indexed: 10/24/2022]
Abstract
Complex pH transitions occur in cation exchange columns used for protein chromatography during equilibration and salt elution steps when the stationary phase contains weak acid groups even if the mobile phase is buffered and the buffering species do not interact with the stationary phase. In this work, we present a local equilibrium model to predict the magnitude and duration of these pH transients. The model equations are solved by the method of characteristics and by numerical simulations using an equilibrium-dispersive model. By incorporating an explicit description of the dissociation of the weakly ionogenic groups in the resin, we show that counterion binding in the column can be predicted for different buffer systems based on a single experimental resin titration curve without having to resort to empirically defined adsorption equilibrium constants. Model predictions based on these assumptions are found to be in excellent agreement with experimental results obtained for three different resins containing varying concentrations of weak acid groups. Four common buffer systems, acetate, citrate, MES, and phosphate are considered with both step and gradient changes in salt concentration at pH 5.5. Each buffer yields a different pH excursion behavior. We demonstrate that when the counterion concentration is kept constant in each of these buffers, which is needed to attain identical protein adsorption behavior, the magnitude of the pH transitions occurring during salt steps is nearly independent of the buffer system. On the other hand, the duration of the pH transitions is smallest for MES suggesting that this buffer system is preferable where pH variations are to be prevented.
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Affiliation(s)
- Timothy M Pabst
- Department of Chemical Engineering, University of Virginia, 102 Engineers' Way, Charlottesville, VA 22904-4741, USA
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22
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Abstract
Bioseparation processes are dominated by chromatographic steps. Even primary recovery is sometimes accomplished by chromatographic separation, using a fluidized bed instead of a fixed bed. In this review, the action principles, features of chromatography media regarding physical and chemical properties will be described. An attempt will be made to establish categories of different media. Characteristics for bioseparation are the large pores and particle sizes. To achieve sufficient capacity for ultralarge molecules, such as plasmids or nanoparticles, such as viruses monoliths are the media of choice. In these media, the mass transport is accomplished by convection, and thus, the low diffusivity can be overcome. Common to all modern chromatography media is the fast operation. There are examples where a residence time of less then 3 min, is sufficient to reach the full potential of the adsorbent.
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Affiliation(s)
- Alois Jungbauer
- Department of Biotechnology, University of Natural Resources and Applied Life Science, A-1190 Vienna, Austria.
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23
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Concepts in Development of Manufacturing Strategies for Monoclonal Antibodies. Antibodies (Basel) 2004. [DOI: 10.1007/978-1-4419-8875-1_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] Open
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24
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Approaches to Devise Antibody Purification Processes by Chromatography. Antibodies (Basel) 2004. [DOI: 10.1007/978-1-4419-8877-5_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] Open
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25
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26
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27
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Burton SC, Harding DR. Salt-independent adsorption chromatography: new broad-spectrum affinity methods for protein capture. JOURNAL OF BIOCHEMICAL AND BIOPHYSICAL METHODS 2001; 49:275-87. [PMID: 11694285 DOI: 10.1016/s0165-022x(01)00204-4] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The role of chromatography in capture is reviewed in terms of the special requirements imposed by the processing of very crude feedstocks. Adsorption methods which are not significantly affected by variations of feedstock ionic strength are highlighted. Methods are compared in terms of simplicity, robustness, selectivity and ease of elution. The application of such methods to enzyme and antibody purifications is summarised. Particular emphasis is placed on high ligand density methods, which have potential for broad-spectrum application.
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Affiliation(s)
- S C Burton
- Biochemical Recovery Group, Centre for Bioprocess Engineering, School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
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28
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Boschetti E. The use of thiophilic chromatography for antibody purification: a review. JOURNAL OF BIOCHEMICAL AND BIOPHYSICAL METHODS 2001; 49:361-89. [PMID: 11694289 DOI: 10.1016/s0165-022x(01)00208-1] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- E Boschetti
- Biosepra-Life Technologies Division of Invitrogen, 48, Avenue des Genottes, 95800 Cergy Saint Christophe, France.
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29
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Hanlon CA, DeMattos CA, DeMattos CC, Niezgoda M, Hooper DC, Koprowski H, Notkins A, Rupprecht CE. Experimental utility of rabies virus-neutralizing human monoclonal antibodies in post-exposure prophylaxis. Vaccine 2001; 19:3834-42. [PMID: 11427255 DOI: 10.1016/s0264-410x(01)00135-9] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Rabies immune globulin (RIG) is essential for post-exposure prophylaxis but is expensive and not widely available. Rabies virus-neutralizing human monoclonal antibodies (Mabs) were evaluated in vitro and in a Syrian hamster model as a potential future alternative. Seven Mabs neutralized representative rabies virus variants. However, a European bat lyssavirus was not neutralized by either Mabs or RIG. Moreover, Duvenhage virus was neutralized by RIG, but not by Mabs, and Lagos bat and Mokola viruses were neutralized by one Mab but not by RIG. In hamsters, one Mab resulted in protection that was comparable to human RIG. These results suggest that Mabs may provide a promising alternative to RIG.
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Affiliation(s)
- C A Hanlon
- Centers for Disease Control and Prevention, Rabies Section MS-G33, 1600 Clifton Road NE, Atlanta, GA 30333, USA.
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30
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Guerrier L, Flayeux I, Boschetti E. A dual-mode approach to the selective separation of antibodies and their fragments. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 2001; 755:37-46. [PMID: 11393728 DOI: 10.1016/s0378-4347(00)00598-3] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A novel chromatography method for the separation of antibodies is described. The adsorption of antibodies on the solid phase involves interaction with a ligand that combines mild hydrophobic characteristics and some degree of molecular recognition with a derivative of pyridine. This combined effect results in the adsorption of antibodies in the absence of lyotropic salts. When environmental pH is changed, the ligand becomes ionically charged, allowing the desorption of antibodies. The mechanism of adsorption, involving hydrophobic associations and ionic related interaction, is here qualified as dual-mode. Studies on the determination of the apparent dissociation constant for immunoglobulins G are presented. Adsorption of antibodies from crude feedstocks typically occurs without adjustment of pH or ionic strength. The sorbent is then washed with a buffer to eliminate protein impurities and, when lowering the environmental pH, antibodies are desorbed. The solid-phase material is used for the separation of antibodies from an ascites fluid and from a cell culture supernatant, followed by a polishing step on an hydroxyapatite column. Preliminary studies, related to the ability of the solid phase to separate antibody fragments, are also reported. In these studies, it has been demonstrated that both Fab and Fc fragments from polyclonal IgG are adsorbed to the solid phase under typical binding conditions. Under other defined physico-chemical conditions (ionic strength and pH), separation of both fragments in a single step has been achieved.
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Affiliation(s)
- L Guerrier
- Biosepra S.A., Life Technologies, Cergy-Pontoise, France.
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31
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Denton G, Murray A, Price MR, Levison PR. Direct isolation of monoclonal antibodies from tissue culture supernatant using the cation-exchange cellulose Express-Ion S. J Chromatogr A 2001; 908:223-34. [PMID: 11218125 DOI: 10.1016/s0021-9673(00)00834-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The chromatography of the murine hybridoma cell C595/102 culture supernatant expressing the therapeutic monoclonal antibody C595, on the cation-exchange cellulose Whatman Express-Ion Exchanger S has been investigated. Initial method scouting studies using purified C595 in 1-ml mini columns demonstrated that binding capacity and binding efficiency were dependent not only on decreasing pH but also on the buffer salts used to prepare the mobile phase. Under optimised conditions of 0.1 M sodium acetate buffer, pH 5.0, we were able to separate purified C595 from BSA, the major contaminant in tissue culture fluid. Under these conditions immunoreactive C595 could be isolated directly from tissue culture supernatant. A scale-down study was carried out using a 25-ml column operated at a flow-rate of 150 cm/h which also yielded purified immunoreactive antibody. This procedure should now be suitable for scale-up.
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Affiliation(s)
- G Denton
- Cancer Research Laboratories, School of Pharmaceutical Sciences, University of Nottingham, University Park, UK
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Dürauer A, Csaszar E, Mechtler K, Jungbauer A, Schmid E. Characterisation of the rubber elongation factor from ammoniated latex by electrophoresis and mass spectrometry. J Chromatogr A 2000; 890:145-58. [PMID: 10976802 DOI: 10.1016/s0021-9673(00)00241-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Rubber elongation factor (REF) is considered as one of the major allergens present in latex. An extraction and purification protocol for preparation of REF standards has been modified. A protein fraction was extracted from ammoniated latex sap and purified by gel filtration chromatography. The purified and concentrated proteins were separated by sodium dodecylsulfate-polyacrylamide gel electrophoresis into two major bands. These bands were further characterised by matrix-assisted laser desorption/ionisation time-of-flight and nano-electrospray ionization mass spectrometry. REF and a truncated form could be ascertained by the mass and fragmentation pattern of the tryptic peptides. In the faster migrating band an additional peptide could be identified. This peptide is also present in Hevb3 and a Mr 27000 latex allergen. Our findings indicate that conventional REF preparations as standards may contain additional allergenic proteins.
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Affiliation(s)
- A Dürauer
- Institute of Applied Microbiology, University of Agricultural Sciences, Vienna, Austria
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Boschetti E, Jungbauer A. 15 Separation of antibodies by liquid chromatography. HANDBOOK OF BIOSEPARATIONS 2000. [DOI: 10.1016/s0149-6395(00)80062-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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