1
|
Chu W, Prodromou R, Day KN, Schneible JD, Bacon KB, Bowen JD, Kilgore RE, Catella CM, Moore BD, Mabe MD, Alashoor K, Xu Y, Xiao Y, Menegatti S. Peptides and pseudopeptide ligands: a powerful toolbox for the affinity purification of current and next-generation biotherapeutics. J Chromatogr A 2020; 1635:461632. [PMID: 33333349 DOI: 10.1016/j.chroma.2020.461632] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/14/2020] [Accepted: 10/15/2020] [Indexed: 02/08/2023]
Abstract
Following the consolidation of therapeutic proteins in the fight against cancer, autoimmune, and neurodegenerative diseases, recent advancements in biochemistry and biotechnology have introduced a host of next-generation biotherapeutics, such as CRISPR-Cas nucleases, stem and car-T cells, and viral vectors for gene therapy. With these drugs entering the clinical pipeline, a new challenge lies ahead: how to manufacture large quantities of high-purity biotherapeutics that meet the growing demand by clinics and biotech companies worldwide. The protein ligands employed by the industry are inadequate to confront this challenge: while featuring high binding affinity and selectivity, these ligands require laborious engineering and expensive manufacturing, are prone to biochemical degradation, and pose safety concerns related to their bacterial origin. Peptides and pseudopeptides make excellent candidates to form a new cohort of ligands for the purification of next-generation biotherapeutics. Peptide-based ligands feature excellent target biorecognition, low or no toxicity and immunogenicity, and can be manufactured affordably at large scale. This work presents a comprehensive and systematic review of the literature on peptide-based ligands and their use in the affinity purification of established and upcoming biological drugs. A comparative analysis is first presented on peptide engineering principles, the development of ligands targeting different biomolecular targets, and the promises and challenges connected to the industrial implementation of peptide ligands. The reviewed literature is organized in (i) conventional (α-)peptides targeting antibodies and other therapeutic proteins, gene therapy products, and therapeutic cells; (ii) cyclic peptides and pseudo-peptides for protein purification and capture of viral and bacterial pathogens; and (iii) the forefront of peptide mimetics, such as β-/γ-peptides, peptoids, foldamers, and stimuli-responsive peptides for advanced processing of biologics.
Collapse
Affiliation(s)
- Wenning Chu
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Raphael Prodromou
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Kevin N Day
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - John D Schneible
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Kaitlyn B Bacon
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - John D Bowen
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Ryan E Kilgore
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Carly M Catella
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Brandyn D Moore
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Matthew D Mabe
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Kawthar Alashoor
- Department of Biochemistry and Biophysics, University of Rochester, Rochester, NY 14642
| | - Yiman Xu
- College of Material Science and Engineering, Donghua University, 201620 Shanghai, People's Republic of China
| | - Yuanxin Xiao
- College of Textile, Donghua University, Songjiang District, Shanghai, 201620, People's Republic of China
| | - Stefano Menegatti
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606.
| |
Collapse
|
2
|
Identification and Characterization of Novel Fc-Binding Heptapeptides from Experiments and Simulations. Polymers (Basel) 2018; 10:polym10070778. [PMID: 30960703 PMCID: PMC6404062 DOI: 10.3390/polym10070778] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Revised: 07/11/2018] [Accepted: 07/12/2018] [Indexed: 01/17/2023] Open
Abstract
Purification of biologically-derived therapeutics is a major cost contributor to the production of this rapidly growing class of pharmaceuticals. Monoclonal antibodies comprise a large percentage of these products, therefore new antibody purification tools are needed. Small peptides, as opposed to traditional antibody affinity ligands such as Protein A, may have advantages in stability and production costs. Multiple heptapeptides that demonstrate Fc binding behavior that have been identified from a combinatorial peptide library using M13 phage display are presented herein. Seven unique peptide sequences of diverse hydrophobicity and charge were identified. All seven peptides showed strong binding to the four major human IgG isotypes, human IgM, as well as binding to canine, rat, and mouse IgG. These seven peptides were also shown to bind human IgG4 from DMEM cell culture media with 5% FCS and 5 g/L ovalbumin present. These peptides may be useful as surface ligands for antibody detection and purification purposes. Molecular docking and classical molecular dynamics (MD) simulations were conducted to elucidate the mechanisms and energetics for the binding of these peptides to the Fc region. The binding site was found to be located between the two glycan chains inside the Fc fragment. Both hydrogen bonding and hydrophobic interactions were found to be crucial for the binding interactions. Excellent agreement for the binding strength was obtained between experimental results and simulations.
Collapse
|
3
|
Behere K, Cha B, Yoon S. Protein a resin lifetime study: Evaluation of protein a resin performance with a model-based approach in continuous capture. Prep Biochem Biotechnol 2018; 48:242-256. [DOI: 10.1080/10826068.2018.1425711] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Ketki Behere
- Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, MA, USA
| | - Bumjoon Cha
- Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, MA, USA
| | - Seongkyu Yoon
- Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, MA, USA
| |
Collapse
|
4
|
Tong HF, Cavallotti C, Yao SJ, Lin DQ. Molecular insight into protein binding orientations and interaction modes on hydrophobic charge-induction resin. J Chromatogr A 2017; 1512:34-42. [DOI: 10.1016/j.chroma.2017.06.071] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 06/15/2017] [Accepted: 06/29/2017] [Indexed: 11/28/2022]
|
5
|
Mustafaoglu N, Kiziltepe T, Bilgicer B. Antibody purification via affinity membrane chromatography method utilizing nucleotide binding site targeting with a small molecule. Analyst 2016; 141:6571-6582. [PMID: 27845784 PMCID: PMC5245175 DOI: 10.1039/c6an02145j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Here, we present an affinity membrane chromatography technique for purification of monoclonal and polyclonal antibodies from cell culture media of hybridomas and ascites fluids. The m-NBST method utilizes the nucleotide-binding site (NBS) that is located on the Fab variable domain of immunoglobulins to enable capturing of antibody molecules on a membrane affinity column via a small molecule, tryptamine, which has a moderate binding affinity to the NBS. Regenerated cellulose membrane was selected as a matrix due to multiple advantages over traditionally used resin-based affinity systems. Rituximab was used for proof of concept experiments. Antibody purification was accomplished by first capture of injected samples while running equilibration buffer (50 mM sodium phosphate pH 7.0), followed by elution achieved by running a gradient of mild elution buffer (3 M NaCl in 50 mM phosphate pH 7.0). The results indicate that the m-NBST column efficiency for Rituximab was >98%, with a purity level of >98%. The quality and the capacity of this small molecule membrane affinity purification method is further evaluated for a number of parameters such as: injection concentrations, volumes, wash/bind time, elution gradient, antibody/protein-contaminant combinations, effects of injection buffer, post-purification antigen binding activity of antibodies, and column reusability and stability.
Collapse
Affiliation(s)
- Nur Mustafaoglu
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA
| | - Tanyel Kiziltepe
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA and Advanced Diagnostics and Therapeutics, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA
| | - Basar Bilgicer
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA and Advanced Diagnostics and Therapeutics, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA and Department of Chemistry and Biochemistry, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA and Mike and Josie Harper Cancer Research Institute, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA and Center for Rare & Neglected Diseases, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA.
| |
Collapse
|
6
|
Kouyoumdjian A, Lazar R, Slater N. The development of a weak anion micro-capillary film for protein chromatography. J Chromatogr A 2016; 1468:64-72. [DOI: 10.1016/j.chroma.2016.09.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 08/31/2016] [Accepted: 09/02/2016] [Indexed: 10/21/2022]
|
7
|
Kangwa M, Yelemane V, Polat AN, Gorrepati KDD, Grasselli M, Fernández-Lahore M. High-level fed-batch fermentative expression of an engineered Staphylococcal protein A based ligand in E. coli: purification and characterization. AMB Express 2015; 5:70. [PMID: 26556030 PMCID: PMC4641145 DOI: 10.1186/s13568-015-0155-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 10/22/2015] [Indexed: 11/24/2022] Open
Abstract
The major platform for high level recombinant protein production is based on genetically modified microorganisms like Escherichia coli (E. coli) due to its short dividing time, ability to use inexpensive substrates and additionally, its genetics is comparatively simple, well characterized and can be manipulated easily. Here, we investigated the possibilities of finding the best media for high cell density fermentation, by analyzing different media samples, focusing on improving fermentation techniques and recombinant protein production. Initial fermentation of E. coli BL21 DE3:pAV01 in baffled flasks showed that high cell density was achieved when using complex media, Luria–Bertani (LB) and Terrific medium broth (TB) (10 and 14 g/L wet weight, respectively), as compared to mineral media M9, modified minimal medium (MMM) and Riesenberg mineral medium (RM) (7, 8 and 7 g/L, respectively). However, in fed-batch fermentation processes when using MMM after 25 h cultivation, it was possible to yield an optical density (OD600) of 139 corresponding to 172 g/L of wet biomass was produced in a 30 L TV Techfors-S Infors HT fermenter, with a computer controlled nutrient supply (glucose as a carbon source) delivery system, indicating nearly 1.5 times that obtained from TB. Upon purification, a total of 1.65 mg/g of protein per gram cell biomass was obtained and the purified AviPure showed affinity for immunoglobulin. High cell density fed batch fermentation was achieved by selecting the best media and growth conditions, by utilizing a number of fermentation parameters like media, fermentation conditions, chemical concentrations, pO2 level, stirrer speed, pH level and feed media addition. It is possible to reach cell densities higher than shake flasks and stirred tank reactors with the improved oxygen transfer rate and feed.
Collapse
|
8
|
Salvalaglio M, Paloni M, Guelat B, Morbidelli M, Cavallotti C. A two level hierarchical model of protein retention in ion exchange chromatography. J Chromatogr A 2015; 1411:50-62. [DOI: 10.1016/j.chroma.2015.07.101] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 07/23/2015] [Accepted: 07/27/2015] [Indexed: 10/23/2022]
|
9
|
Affiliation(s)
- Yong-Ming Wei
- Chemical Engineering Research Center; East China University of Science and Technology; Shanghai 200237 China
| | - Yanxiang Li
- Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 China
| | - Chuanfang Yang
- Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 China
| | - E. L. Cussler
- Dept. of Chemical Engineering and Materials Science; University of Minnesota; Minneapolis MN 55455
| |
Collapse
|
10
|
Chromatographic Characterization and Process Performance of Column-Packed Anion Exchange Fibrous Adsorbents for High Throughput and High Capacity Bioseparations. Processes (Basel) 2015. [DOI: 10.3390/pr3010204] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
|
11
|
Effect of cleaning agents and additives on Protein A ligand degradation and chromatography performance. J Chromatogr A 2015; 1385:63-8. [DOI: 10.1016/j.chroma.2015.01.068] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 01/22/2015] [Accepted: 01/24/2015] [Indexed: 11/20/2022]
|
12
|
Paloni M, Cavallotti C. Molecular modeling of the affinity chromatography of monoclonal antibodies. Methods Mol Biol 2015; 1286:321-335. [PMID: 25749965 DOI: 10.1007/978-1-4939-2447-9_25] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Molecular modeling is a methodology that offers the possibility of studying complex systems such as protein-ligand complexes from an atomistic point of view, making available information that can be difficultly obtained from experimental studies. Here, a protocol for the construction of molecular models of the interaction between antibodies and ligands that can be used for an affinity chromatography process is presented. The outlined methodology focuses mostly on the description of a procedure that may be adopted to determine the structure and free energy of interaction between the antibody and the affinity ligand. A procedure to extend the proposed methodology to include the effect of the environment (buffer solution, spacer, support matrix) is also briefly outlined.
Collapse
Affiliation(s)
- Matteo Paloni
- Department of Chimica Materiali e Ingegneria Chimica, G. Natta, Politecnico di Milano, via Mancinelli 7, Milano, 20131, Italy
| | | |
Collapse
|
13
|
Nascimento A, Rosa S, Mateus M, Azevedo A. Polishing of monoclonal antibodies streams through convective flow devices. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2014.06.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
14
|
Molecular basis for the dissociation dynamics of protein A-immunoglobulin G1 complex. PLoS One 2013; 8:e66935. [PMID: 23776704 PMCID: PMC3680412 DOI: 10.1371/journal.pone.0066935] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Accepted: 05/13/2013] [Indexed: 12/24/2022] Open
Abstract
Staphylococcus aureus protein A (SpA) is the most popular affinity ligand for immunoglobulin G1 (IgG1). However, the molecular basis for the dissociation dynamics of SpA-IgG1 complex is unclear. Herein, coarse-grained (CG) molecular dynamics (MD) simulations with the Martini force field were used to study the dissociation dynamics of the complex. The CG-MD simulations were first verified by the agreement in the structural and interactional properties of SpA and human IgG1 (hIgG1) in the association process between the CG-MD and all-atom MD at different NaCl concentrations. Then, the CG-MD simulation studies focused on the molecular insight into the dissociation dynamics of SpA-hIgG1 complex at pH 3.0. It is found that there are four steps in the dissociation process of the complex. First, there is a slight conformational adjustment of helix II in SpA. This is followed by the phenomena that the electrostatic interactions provided by the three hot spots (Glu143, Arg146 and Lys154) of helix II of SpA break up, leading to the dissociation of helix II from the binding site of hIgG1. Subsequently, breakup of the hydrophobic interactions between helix I (Phe132, Tyr133 and His137) in SpA and hIgG1 occurs, resulting in the disengagement of helix I from its binding site of hIgG1. Finally, the non-specific interactions between SpA and hIgG1 decrease slowly till disappearance, leading to the complete dissociation of the SpA-hIgG1 complex. This work has revealed that CG-MD coupled with the Martini force field is an effective method for studying the dissociation dynamics of protein-protein complex.
Collapse
|
15
|
Kish WS, Naik AD, Menegatti S, Carbonell RG. Peptide-Based Affinity Adsorbents with High Binding Capacity for the Purification of Monoclonal Antibodies. Ind Eng Chem Res 2012. [DOI: 10.1021/ie302345w] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- William S. Kish
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina
27695-7905, United States
| | - Amith D. Naik
- Biomanufacturing Training and
Education Center (BTEC), North Carolina State University, Raleigh, North Carolina 27695-7928, United States
| | - Stefano Menegatti
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina
27695-7905, United States
| | - Ruben G. Carbonell
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina
27695-7905, United States
- Biomanufacturing Training and
Education Center (BTEC), North Carolina State University, Raleigh, North Carolina 27695-7928, United States
| |
Collapse
|
16
|
Lin DQ, Tong HF, Wang HY, Shao S, Yao SJ. Molecular mechanism of hydrophobic charge-induction chromatography: Interactions between the immobilized 4-mercaptoethyl-pyridine ligand and IgG. J Chromatogr A 2012; 1260:143-53. [DOI: 10.1016/j.chroma.2012.08.080] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 07/27/2012] [Accepted: 08/21/2012] [Indexed: 10/27/2022]
|
17
|
Preparation, characterization, and process performance of composite fibrous adsorbents as cation exchangers for high throughput and high capacity bioseparations. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 903:14-22. [DOI: 10.1016/j.jchromb.2012.06.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 06/19/2012] [Accepted: 06/21/2012] [Indexed: 11/17/2022]
|
18
|
Lin DQ, Tong HF, Wang HY, Yao SJ. Molecular Insight into the Ligand–IgG Interactions for 4-Mercaptoethyl-pyridine Based Hydrophobic Charge-Induction Chromatography. J Phys Chem B 2012; 116:1393-400. [DOI: 10.1021/jp206817b] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dong-Qiang Lin
- State Key Laboratory
of Chemical Engineering, Department
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Hong-Fei Tong
- State Key Laboratory
of Chemical Engineering, Department
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Hong-Yin Wang
- State Key Laboratory
of Chemical Engineering, Department
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Shan-Jing Yao
- State Key Laboratory
of Chemical Engineering, Department
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| |
Collapse
|
19
|
Concanavalin A immobilized magnetic poly(glycidyl methacrylate) beads for antibody purification. J Appl Polym Sci 2012. [DOI: 10.1002/app.34443] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
20
|
Technology trends in antibody purification. J Chromatogr A 2012; 1221:57-70. [DOI: 10.1016/j.chroma.2011.10.034] [Citation(s) in RCA: 187] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2011] [Revised: 10/09/2011] [Accepted: 10/12/2011] [Indexed: 01/21/2023]
|
21
|
Huang B, Liu FF, Dong XY, Sun Y. Molecular mechanism of the effects of salt and pH on the affinity between protein A and human immunoglobulin G1 revealed by molecular simulations. J Phys Chem B 2011; 116:424-33. [PMID: 22136061 DOI: 10.1021/jp205770p] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Protein A from the bacterium Staphylococcus aureus (SpA) has been widely used as an affinity ligand for purification of immunoglobulin G (IgG). The affinity between SpA and IgG is affected differently by salt and pH, but their molecular mechanisms still remain unclear. In this work, molecular dynamics simulations and molecular mechanics Poisson-Boltzmann surface area analysis were performed to investigate the salt (NaCl) and pH effects on the affinity between SpA and human IgG1 (hIgG1). It is found that salt and pH affect the interactions of the hot spots of SpA by different mechanisms. In the salt solution, the compensations between helices I and II of SpA as well as between the nonpolar and electrostatic energies make the binding free energy independent of salt concentration. At pH 3.0, the unfavorable electrostatic interactions increase greatly and become the driving force for dissociation of the SpA-hIgG1 complex. They mainly come from the strong electrostatic repulsions between positively charged residues (H137, R146, and K154) of SpA and the positively charged residues of hIgG1. It is considered to be the molecular basis for hIgG1 elution from SpA-based affinity adsorbents at pH 3.0. The dissociation mechanism is then used to refine the binding model of SpA to hIgG1. The model is expected to help design high-affinity peptide ligands of IgG.
Collapse
Affiliation(s)
- Bo Huang
- Department of Biological Engineering and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | | | | | | |
Collapse
|
22
|
Salvalaglio M, Cavallotti C. Molecular modeling to rationalize ligand-support interactions in affinity chromatography. J Sep Sci 2011; 35:7-19. [DOI: 10.1002/jssc.201100595] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Revised: 09/26/2011] [Accepted: 09/30/2011] [Indexed: 11/09/2022]
|
23
|
Ayyar BV, Arora S, Murphy C, O'Kennedy R. Affinity chromatography as a tool for antibody purification. Methods 2011; 56:116-29. [PMID: 22033471 DOI: 10.1016/j.ymeth.2011.10.007] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 10/11/2011] [Accepted: 10/12/2011] [Indexed: 11/29/2022] Open
Abstract
The global antibody market has grown exponentially due to increasing applications in research, diagnostics and therapy. Antibodies are present in complex matrices (e.g. serum, milk, egg yolk, fermentation broth or plant-derived extracts). This has led to the need for development of novel platforms for purification of large quantities of antibody with defined clinical and performance requirements. However, the choice of method is strictly limited by the manufacturing cost and the quality of the end product required. Affinity chromatography is one of the most extensively used methods for antibody purification, due to its high selectivity and rapidity. Its effectiveness is largely based on the binding characteristics of the required antibody and the ligand used for antibody capture. The approaches used for antibody purification are critically examined with the aim of providing the reader with the principles and practical insights required to understand the intricacies of the procedures. Affinity support matrices and ligands for affinity chromatography are discussed, including their relevant underlying principles of use, their potential value and their performance in purifying different types of antibodies, along with a list of commercially available alternatives. Furthermore, the principal factors influencing purification procedures at various stages are highlighted. Practical considerations for development and/or optimizations of efficient antibody-purification protocols are suggested.
Collapse
Affiliation(s)
- B Vijayalakshmi Ayyar
- Biomedical Diagnostics Institute, National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland
| | | | | | | |
Collapse
|
24
|
Boi C, Dimartino S, Hofer S, Horak J, Williams S, Sarti GC, Lindner W. Influence of different spacer arms on Mimetic Ligand™ A2P and B14 membranes for human IgG purification. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:1633-40. [DOI: 10.1016/j.jchromb.2011.03.059] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Accepted: 03/31/2011] [Indexed: 11/28/2022]
|
25
|
Huang B, Liu FF, Dong XY, Sun Y. Molecular Mechanism of the Affinity Interactions between Protein A and Human Immunoglobulin G1 Revealed by Molecular Simulations. J Phys Chem B 2011; 115:4168-76. [DOI: 10.1021/jp111216g] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bo Huang
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Fu-Feng Liu
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Xiao-Yan Dong
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Yan Sun
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| |
Collapse
|
26
|
Zheng Y, Liu H, Gurgel PV, Carbonell RG. Polypropylene nonwoven fabrics with conformal grafting of poly(glycidyl methacrylate) for bioseparations. J Memb Sci 2010. [DOI: 10.1016/j.memsci.2010.08.037] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|