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Ingavat N, Wang X, Liew JM, Mahfut FB, But KP, Kok YJ, Bi X, Yang Y, Shintaro K, Tsoumpra M, Zhang W. Harnessing ceramic hydroxyapatite as an effective polishing strategy to remove product- and process-related impurities in bispecific antibody purification. BIORESOUR BIOPROCESS 2023; 10:93. [PMID: 38647984 PMCID: PMC10992335 DOI: 10.1186/s40643-023-00713-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 12/06/2023] [Indexed: 04/25/2024] Open
Abstract
Bispecific antibody (bsAb), a novel therapeutic modality, provides excellent treatment efficacy, yet poses numerous challenges to downstream process development, which are mainly due to the intricate diversity of bsAb structures and impurity profiles. Ceramic hydroxyapatite (CHT), a mixed-mode medium, allows proteins to interact with its calcium sites (C-sites) through metal affinity and/or its phosphate sites (P-sites) through cation exchange interactions. This dual-binding capability potentially offers unique bind and elute behaviours for different proteins of interest, resulting in optimal product purity when suitable elution conditions are employed. In this study, the effectiveness of CHT as a polishing step for bsAb purification was investigated across three model molecules and benchmarked against the traditional cation exchange chromatography (CEX). For both asymmetric and symmetric IgG-like bsAb post Protein A eluates, at least 97% product purity was achieved after CHT polishing. CHT delivered a superior aggregate clearance to CEX, resulting in low high molecular weight (HMW) impurities (0.5%) and low process-related impurities in the product pools. Moreover, CHT significantly mitigated "chromatography-induced aggregation" whereas eightfold more HMW was generated by CEX. This study illustrated the developability of CHT in effectively eliminating low molecular weight (LMW) impurities through post-load-wash (PLW) optimization, resulting in an additional reduction of up to 48% in LMW impurities. A mechanistic explanation regarding the performance of impurity removal and mitigation of the chromatography-induced aggregation by CHT was proposed, illustrating unique CHT capability is potentially driven by C-site cooperation, of which effectiveness could depend on the bsAb composition and size.
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Affiliation(s)
- Nattha Ingavat
- Downstream Processing Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Xinhui Wang
- Downstream Processing Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Jia Min Liew
- Downstream Processing Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Farouq Bin Mahfut
- Cell Line Development Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Ka Pui But
- Protein Analytics Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Yee Jiun Kok
- Protein Analytics Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Xuezhi Bi
- Protein Analytics Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Yuansheng Yang
- Cell Line Development Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Kobayashi Shintaro
- Chromatography Media Business Division, HOYA Technosurgical Corporation, Singapore Branch, Singapore
| | - Maria Tsoumpra
- Chromatography Media Business Division, HOYA Technosurgical Corporation, Singapore Branch, Singapore
| | - Wei Zhang
- Downstream Processing Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore.
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Gudhka RB, Vats M, Bilodeau CL, McCallum SA, McCoy MA, Roush DJ, Snyder MA, Cramer SM. Probing IgG1 F C-Multimodal Nanoparticle Interactions: A Combined Nuclear Magnetic Resonance and Molecular Dynamics Simulations Approach. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:12188-12203. [PMID: 34633195 DOI: 10.1021/acs.langmuir.1c02114] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this study, NMR and molecular dynamics simulations were employed to study IgG1 FC binding to multimodal surfaces. Gold nanoparticles functionalized with two multimodal cation-exchange ligands (Capto and Nuvia) were synthesized and employed to carry out solution-phase NMR experiments with the FC. Experiments with perdeuterated 15N-labeled FC and the multimodal surfaces revealed micromolar residue-level binding affinities as compared to millimolar binding affinities with these ligands in free solution, likely due to cooperativity and avidity effects. The binding of FC with the Capto ligand nanoparticles was concentrated near an aliphatic cluster in the CH2/CH3 interface, which corresponded to a focused hydrophobic region. In contrast, binding with the Nuvia ligand nanoparticles was more diffuse and corresponded to a large contiguous positive electrostatic potential region on the side face of the FC. Results with lower-ligand-density nanoparticles indicated a decrease in binding affinity for both systems. For the Capto ligand system, several aliphatic residues on the FC that were important for binding to the higher-density surface did not interact with the lower-density nanoparticles. In contrast, no significant difference was observed in the interacting residues on the FC to the high- and low-ligand density Nuvia surfaces. The binding affinities of FC to both multimodal-functionalized nanoparticles decreased in the presence of salt due to the screening of multiple weak interactions of polar and positively charged residues. For the Capto ligand nanoparticle system, this resulted in an even more focused hydrophobic binding region in the interface of the CH2 and CH3 domains. Interestingly, for the Nuvia ligand nanoparticles, the presence of salt resulted in a large transition from a diffuse binding region to the same focused binding region determined for Capto nanoparticles at 150 mM salt. Molecular dynamics simulations corroborated the NMR results and provided important insights into the molecular basis of FC binding to these different multimodal systems containing clustered (observed at high-ligand densities) and nonclustered ligand surfaces. This combined biophysical and simulation approach provided significant insights into the interactions of FC with multimodal surfaces and sets the stage for future analyses with even more complex biotherapeutics.
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Affiliation(s)
| | | | | | | | - Mark A McCoy
- Mass Spectrometry & Biophysics, Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - David J Roush
- Biologics Process R&D, Downstream Purification Development and Engineering, Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Mark A Snyder
- Process Chemistry Division, Bio-Rad Laboratories, Hercules, California 94547, United States
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Seria E, Samut Tagliaferro S, Cutajar D, Galdies R, Felice A. Immunoglobulin G in Platelet-Derived Wound Healing Factors. BIOMED RESEARCH INTERNATIONAL 2021; 2021:4762657. [PMID: 33575328 PMCID: PMC7861922 DOI: 10.1155/2021/4762657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 12/03/2020] [Accepted: 01/13/2021] [Indexed: 11/17/2022]
Abstract
We intended to reformulate an existing platelet-derived wound healing formula to target each phase of the healing wound with the appropriate phase-specific molecules. A decreased perfusion of the skin, often associated with conditions such as thalassemia, sickle cell disease, diabetes mellitus, and chronic vascular disease, is the most common etiology of cutaneous ulcers and chronic wounds. We had previously shown that a PDWHF topically applied to a chronic nonhealing ulcer of a β-thalassemia homozygote stimulated and accelerated closure of the wound. The PDWHF was prepared from a pooled platelet concentrate of a matching blood group, consisting of a combination of platelet α-granule-derived factors. Processing of the apheresis-pooled platelets yielded various amounts of proteins (3.36 g/mL ± 0.25 (SD) (N = 10)) by the better lysis buffer method. Immunoglobulin G was found to be the most abundant α-granule-secreted protein. Equally broad quantities of the IgG (10.76 ± 12.66% (SD) (N = 10)) and IgG/albumin ratios (0.6 ± 0.4 (SD) (N = 10)) were quantified. We have developed a method using a reformulated lysis buffer followed by size exclusion chromatography and affinity chromatography to extract, identify, quantify, and purify IgG from activated platelets. IgG purification was confirmed by Western blot and flow cytometry. It was thought unlikely that the platelet IgG could be accounted for by adsorption of plasma protein, though the variable quantities could account for diversity in wound healing rates. The IgG could protect the wound even from subclinical infections and functionally advance healing. It may be useful in the management of skin ulcers in the early phase of wound healing.
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Affiliation(s)
- Elisa Seria
- Department of Physiology and Biochemistry, Faculty of Medicine and Surgery, Centre of Molecular Medicine and Biobanking, University of Malta and Division of Pathology, Mater Dei Hospital, Malta MSD2080
| | - Sarah Samut Tagliaferro
- Department of Physiology and Biochemistry, Faculty of Medicine and Surgery, Centre of Molecular Medicine and Biobanking, University of Malta and Division of Pathology, Mater Dei Hospital, Malta MSD2080
| | - Doreen Cutajar
- Department of Surgery, Faculty of Medicine and Surgery, University of Malta Medical School and Mater Dei Hospital, Malta MSD2080
| | - Ruth Galdies
- Department of Physiology and Biochemistry, Faculty of Medicine and Surgery, Centre of Molecular Medicine and Biobanking, University of Malta and Division of Pathology, Mater Dei Hospital, Malta MSD2080
| | - Alex Felice
- Department of Physiology and Biochemistry, Faculty of Medicine and Surgery, Centre of Molecular Medicine and Biobanking, University of Malta and Division of Pathology, Mater Dei Hospital, Malta MSD2080
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Gudhka RB, Bilodeau CL, McCallum SA, McCoy MA, Roush DJ, Snyder MA, Cramer SM. Identification of preferred multimodal ligand-binding regions on IgG1 F C using nuclear magnetic resonance and molecular dynamics simulations. Biotechnol Bioeng 2020; 118:809-822. [PMID: 33107976 DOI: 10.1002/bit.27611] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/02/2020] [Accepted: 10/19/2020] [Indexed: 12/15/2022]
Abstract
In this study, the binding of multimodal chromatographic ligands to the IgG1 FC domain were studied using nuclear magnetic resonance and molecular dynamics simulations. Nuclear magnetic resonance experiments carried out with chromatographic ligands and a perdeuterated 15 N-labeled FC domain indicated that while single-mode ion exchange ligands interacted very weakly throughout the FC surface, multimodal ligands containing negatively charged and aromatic moieties interacted with specific clusters of residues with relatively high affinity, forming distinct binding regions on the FC . The multimodal ligand-binding sites on the FC were concentrated in the hinge region and near the interface of the CH 2 and CH 3 domains. Furthermore, the multimodal binding sites were primarily composed of positively charged, polar, and aliphatic residues in these regions, with histidine residues exhibiting some of the strongest binding affinities with the multimodal ligand. Interestingly, comparison of protein surface property data with ligand interaction sites indicated that the patch analysis on FC corroborated molecular-level binding information obtained from the nuclear magnetic resonance experiments. Finally, molecular dynamics simulation results were shown to be qualitatively consistent with the nuclear magnetic resonance results and to provide further insights into the binding mechanisms. An important contribution to multimodal ligand-FC binding in these preferred regions was shown to be electrostatic interactions and π-π stacking of surface-exposed histidines with the ligands. This combined biophysical and simulation approach has provided a deeper molecular-level understanding of multimodal ligand-FC interactions and sets the stage for future analyses of even more complex biotherapeutics.
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Affiliation(s)
- Ronak B Gudhka
- Howard P. Isermann Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, USA.,Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, USA
| | - Camille L Bilodeau
- Howard P. Isermann Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, USA.,Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, USA
| | - Scott A McCallum
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, USA
| | - Mark A McCoy
- Biologics and Vaccines, Downstream Purification Development and Engineering, Merck & Co., Inc., Kenilworth, New Jersey, USA
| | - David J Roush
- Biologics and Vaccines, Downstream Purification Development and Engineering, Merck & Co., Inc., Kenilworth, New Jersey, USA
| | - Mark A Snyder
- Process Chromatography Division, Bio-Rad Laboratories, Hercules, California, USA
| | - Steven M Cramer
- Howard P. Isermann Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, USA.,Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, USA
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5
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Wang Y, Carta G. Competitive binding of monoclonal antibody monomer-dimer mixtures on ceramic hydroxyapatite. J Chromatogr A 2019; 1587:136-145. [DOI: 10.1016/j.chroma.2018.12.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 12/06/2018] [Accepted: 12/11/2018] [Indexed: 10/27/2022]
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6
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Itoh D, Yoshimoto N, Yamamoto S. Retention Mechanism of Proteins in Hydroxyapatite Chromatography - Multimodal Interaction Based Protein Separations: A Model Study. Curr Protein Pept Sci 2019; 20:75-81. [PMID: 29065831 PMCID: PMC6249711 DOI: 10.2174/1389203718666171024122106] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 07/01/2017] [Accepted: 09/22/2017] [Indexed: 11/25/2022]
Abstract
BACKGROUND Retention mechanism of proteins in hydroxyapatite chromatography (HAC) was investigated by linear gradient elution experiments (LGE). MATERIALS AND METHODS Several mobile phase (buffer) solution strategies and solutes were evaluated in order to probe the relative contributions of two adsorption sites of hydroxyapatite (HA) particles, C-site due to Ca (metal affinity) and P-site due to PO4 (cation-exchange). When P-site was blocked, two basic proteins, lysozyme (Lys) and ribonuclease A(RNase), were not retained whereas cytochrome C(Cyt C) and lactoferrin (LF) were retained and also retention of acidic proteins became stronger as the repulsion due to P-site was eliminated. The number of the binding site B values determined from LGE also increased, which also showed reduction of repulsion forces. CONCLUSION The selectivity (retention) of four basic proteins (RNase, Lys, Cyt C, LF) in HAC was different from that in ion-exchange chromatography. Moreover, it was possible to tune the selectivity by using NaCl gradient.
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Affiliation(s)
- Daisuke Itoh
- Bio-Process Engineering Laboratory, Graduate School of Medicine, Biomedical Engineering Center (YUBEC),
Yamaguchi University, Tokiwadai, Ube755-8611, Japan
| | - Noriko Yoshimoto
- Bio-Process Engineering Laboratory, Graduate School of Medicine, Biomedical Engineering Center (YUBEC),
Yamaguchi University, Tokiwadai, Ube755-8611, Japan
| | - Shuichi Yamamoto
- Bio-Process Engineering Laboratory, Graduate School of Medicine, Biomedical Engineering Center (YUBEC),
Yamaguchi University, Tokiwadai, Ube755-8611, Japan
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7
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Domain contributions to antibody retention in multimodal chromatography systems. J Chromatogr A 2018; 1563:89-98. [DOI: 10.1016/j.chroma.2018.05.058] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 04/16/2018] [Accepted: 05/27/2018] [Indexed: 11/17/2022]
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8
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Saito M, Yoshitake T, Okuyama T. Separation and analysis of charged isomers of monoclonal immunoglobulin G by ceramic hydroxyapatite chromatography. Prep Biochem Biotechnol 2015; 46:215-21. [DOI: 10.1080/10826068.2014.995811] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Akkaya B. Porous and spherical hydroxyapatite microcomposites for immunoglobulin G adsorption. J Appl Polym Sci 2013. [DOI: 10.1002/app.39341] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Birnur Akkaya
- Department of Molecular Biology and Genetics; Faculty of Science; Cumhuriyet University; Sivas; 58140; Turkey
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10
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Akkaya B. Separation of lysozyme with magnetically stabilized spherical hydroxyapatite microcomposites in a continuous flow system. J Appl Polym Sci 2013. [DOI: 10.1002/app.39289] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Birnur Akkaya
- Department of Molecular Biology and Genetics; Cumhuriyet University; Sivas; 58140; Turkey
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11
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Podgornik A, Yamamoto S, Peterka M, Krajnc NL. Fast separation of large biomolecules using short monolithic columns. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 927:80-9. [DOI: 10.1016/j.jchromb.2013.02.004] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 02/01/2013] [Accepted: 02/04/2013] [Indexed: 10/27/2022]
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12
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Void exclusion of antibodies by grafted-ligand porous particle anion exchangers. J Chromatogr A 2013; 1282:127-32. [DOI: 10.1016/j.chroma.2013.01.065] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 01/15/2013] [Accepted: 01/15/2013] [Indexed: 11/19/2022]
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13
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Kaltenbrunner O, Cao S, Freydell E, Keener N, Zhu L, Jiao N, Williamson B, Snyder MA, Cummings LJ. Monitoring ceramic hydroxyapatite media degradation using dynamic image analysis and uniaxial confined bulk compression. Biotechnol J 2012; 7:1288-96. [DOI: 10.1002/biot.201100481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 02/29/2012] [Accepted: 05/08/2012] [Indexed: 11/11/2022]
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14
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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]
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15
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Isolation and purification of recombinant proteins, antibodies and plasmid DNA with hydroxyapatite chromatography. Biotechnol J 2011; 7:90-102. [DOI: 10.1002/biot.201100015] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 09/27/2011] [Accepted: 11/04/2011] [Indexed: 11/07/2022]
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16
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Freed AS, Garde S, Cramer SM. Molecular Simulations of Multimodal Ligand–Protein Binding: Elucidation of Binding Sites and Correlation with Experiments. J Phys Chem B 2011; 115:13320-7. [DOI: 10.1021/jp2038015] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alexander S. Freed
- The Howard P. Isermann Department of Chemical and Biological Engineering, and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York
| | - Shekhar Garde
- The Howard P. Isermann Department of Chemical and Biological Engineering, and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York
| | - Steven M. Cramer
- The Howard P. Isermann Department of Chemical and Biological Engineering, and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York
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Morrison CJ, Gagnon P, Cramer SM. Purification of monomeric mAb from associated aggregates using selective desorption chromatography in hydroxyapatite systems. Biotechnol Bioeng 2010; 108:813-21. [DOI: 10.1002/bit.22971] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Revised: 09/14/2010] [Accepted: 09/28/2010] [Indexed: 11/10/2022]
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18
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pH transients in hydroxyapatite chromatography columns—Effects of operating conditions and media properties. J Chromatogr A 2010; 1217:7573-8. [DOI: 10.1016/j.chroma.2010.10.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Revised: 09/29/2010] [Accepted: 10/04/2010] [Indexed: 11/17/2022]
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19
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Thurgood LA, Ryall RL. Proteomic analysis of proteins selectively associated with hydroxyapatite, brushite, and uric acid crystals precipitated from human urine. J Proteome Res 2010; 9:5402-12. [PMID: 20795672 DOI: 10.1021/pr1006312] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The aim of this study was to compare the intracrystalline protein profiles of hydroxyapatite (HA), brushite (BR), and uric acid (UA) crystals precipitated from the same urine samples. HA, BR, and UA crystals were precipitated on two different occasions from the same pooled healthy urine. Crystals were washed to remove surface-bound proteins, and their composition was confirmed using Fourier transform infrared spectroscopy (FTIR) and field emission scanning electron microscopy (FESEM) coupled with energy dispersive X-ray analysis (EDAX). SDS-PAGE was used for visual comparison of the protein content of the demineralised crystal extracts, which were analyzed using liquid chromatography-tandem mass spectrometry (LC-MS/MS). HA comprised nanosized particles interspersed with organic material, which was absent from the BR and UA crystals. The number and type of individual proteins differed between the 3 minerals: 45 proteins were detected in the HA crystal extracts and 77 in the BR crystals, including a number of keratins, which were regarded as methodological contaminants. After excluding the keratins, 21 proteins were common to both HA and BR crystals. Seven nonkeratin proteins were identified in the UA extracts. Several proteins consistently detected in the HA and BR crystal extracts have been previously implicated in kidney stone disease, including osteopontin, prothrombin, protein S100A9 (calgranulin B), inter-α-inhibitor, α1-microglobulin bikunin (AMBP), heparan sulfate proteoglycan, and Tamm-Horsfall glycoprotein, all of which are strong calcium binders. We concluded that the association of proteins with HA, BR, and UA crystals formed in healthy urine is selective and that only a few of the numerous proteins present in healthy urine are likely to play any significant role in preventing stone pathogenesis.
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Affiliation(s)
- Lauren A Thurgood
- Urology Unit, Department of Surgery, Flinders Medical Centre and Flinders Clinical and Molecular Medicine, School of Medicine, Flinders University, Bedford Park, South Australia, Australia.
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Morrison CJ, Gagnon P, Cramer SM. Unique selectivity windows using selective displacers/eluents and mobile phase modifiers on hydroxyapatite. J Chromatogr A 2010; 1217:6484-95. [DOI: 10.1016/j.chroma.2010.08.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Revised: 08/09/2010] [Accepted: 08/12/2010] [Indexed: 11/30/2022]
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21
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Krenkova J, Lacher NA, Svec F. Control of Selectivity via Nanochemistry: Monolithic Capillary Column Containing Hydroxyapatite Nanoparticles for Separation of Proteins and Enrichment of Phosphopeptides. Anal Chem 2010; 82:8335-41. [DOI: 10.1021/ac1018815] [Citation(s) in RCA: 130] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jana Krenkova
- The Molecular Foundry, E. O. Lawrence Berkeley National Laboratory, Berkeley, California 94720, and Analytical R&D, Pfizer BioTherapeutics Pharmaceutical Sciences R&D, Chesterfield, Missouri 63017
| | - Nathan A. Lacher
- The Molecular Foundry, E. O. Lawrence Berkeley National Laboratory, Berkeley, California 94720, and Analytical R&D, Pfizer BioTherapeutics Pharmaceutical Sciences R&D, Chesterfield, Missouri 63017
| | - Frantisek Svec
- The Molecular Foundry, E. O. Lawrence Berkeley National Laboratory, Berkeley, California 94720, and Analytical R&D, Pfizer BioTherapeutics Pharmaceutical Sciences R&D, Chesterfield, Missouri 63017
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Nakagawa T, Ishihara T, Yoshida H, Yoneya T, Wakamatsu K, Kadoya T. Relationship between human IgG structure and retention time in hydroxyapatite chromatography with sodium chloride gradient elution. J Sep Sci 2010; 33:2045-51. [DOI: 10.1002/jssc.201000018] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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pH Transients in hydroxyapatite chromatography columns—Experimental evidence and phenomenological modeling. J Chromatogr A 2010; 1217:2123-31. [DOI: 10.1016/j.chroma.2010.02.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2009] [Revised: 01/25/2010] [Accepted: 02/02/2010] [Indexed: 11/21/2022]
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24
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Gagnon P, Cheung CW, Lepin EJ, Wu AM, Sherman MA, Raubitschek AA, Yazaki PJ. Minibodies and Multimodal Chromatography Methods: A Convergence of Challenge and Opportunity. BIOPROCESS INTERNATIONAL 2010; 8:26-35. [PMID: 21984873 PMCID: PMC3187938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This case study describes early phase purification process development for a recombinant anticancer minibody produced in mammalian cell culture. The minibody did not bind to protein A. Cation-exchange, anion-exchange, hydrophobic-interaction, and hydroxyapatite (eluted by phosphate gradient) chromatographic methods were scouted, but the minibody coeluted with BSA to a substantial degree on each. Hydroxyapatite eluted with a sodium chloride gradient separated BSA and also removed a dimeric contaminant, but BSA consumed so much binding capacity that this proved impractical as a capture tool. Capto MMC media proved capable of supporting adequate capture and significant dimer removal, although both loading and elution selectivity varied dramatically with the amount of supernatant applied to the column. An anion-exchange step was included to fortify overall virus and DNA removal. These results illustrate the value of multimodal chromatography methods when affinity chromatography methods are lacking and conventional alternatives prove inadequate.
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Affiliation(s)
- Pete Gagnon
- Pete Gagnon is principal consultant at Validated Biosystems Inc., 240 Avenida Vista Montana, Suite 7F, San Clemente, CA USA 92672; 1-949-276-7477, fax 1-949-606-1904; www.validated.com. Chia-Wei Cheung, Mark A. Sherman, Andrew A. Raubitschek, and Paul J. Yazaki are with the department of cancer immunotherapeutics and tumor immunology at the City of Hope Medical Center's Beckman Research Institute in Duarte, CA; www.cityofhope.org/research/beckman-research-institute. Eric J. Lepin and Anna M. Wu are with the Crump Institute for Molecular Imaging's department of molecular and medical pharmacology at UCLA's David Geffen School of Medicine in Los Angeles, CA; www.crump.ucla.edu
| | - Chia-Wei Cheung
- Pete Gagnon is principal consultant at Validated Biosystems Inc., 240 Avenida Vista Montana, Suite 7F, San Clemente, CA USA 92672; 1-949-276-7477, fax 1-949-606-1904; www.validated.com. Chia-Wei Cheung, Mark A. Sherman, Andrew A. Raubitschek, and Paul J. Yazaki are with the department of cancer immunotherapeutics and tumor immunology at the City of Hope Medical Center's Beckman Research Institute in Duarte, CA; www.cityofhope.org/research/beckman-research-institute. Eric J. Lepin and Anna M. Wu are with the Crump Institute for Molecular Imaging's department of molecular and medical pharmacology at UCLA's David Geffen School of Medicine in Los Angeles, CA; www.crump.ucla.edu
| | - Eric J. Lepin
- Pete Gagnon is principal consultant at Validated Biosystems Inc., 240 Avenida Vista Montana, Suite 7F, San Clemente, CA USA 92672; 1-949-276-7477, fax 1-949-606-1904; www.validated.com. Chia-Wei Cheung, Mark A. Sherman, Andrew A. Raubitschek, and Paul J. Yazaki are with the department of cancer immunotherapeutics and tumor immunology at the City of Hope Medical Center's Beckman Research Institute in Duarte, CA; www.cityofhope.org/research/beckman-research-institute. Eric J. Lepin and Anna M. Wu are with the Crump Institute for Molecular Imaging's department of molecular and medical pharmacology at UCLA's David Geffen School of Medicine in Los Angeles, CA; www.crump.ucla.edu
| | - Anna M. Wu
- Pete Gagnon is principal consultant at Validated Biosystems Inc., 240 Avenida Vista Montana, Suite 7F, San Clemente, CA USA 92672; 1-949-276-7477, fax 1-949-606-1904; www.validated.com. Chia-Wei Cheung, Mark A. Sherman, Andrew A. Raubitschek, and Paul J. Yazaki are with the department of cancer immunotherapeutics and tumor immunology at the City of Hope Medical Center's Beckman Research Institute in Duarte, CA; www.cityofhope.org/research/beckman-research-institute. Eric J. Lepin and Anna M. Wu are with the Crump Institute for Molecular Imaging's department of molecular and medical pharmacology at UCLA's David Geffen School of Medicine in Los Angeles, CA; www.crump.ucla.edu
| | - Mark A. Sherman
- Pete Gagnon is principal consultant at Validated Biosystems Inc., 240 Avenida Vista Montana, Suite 7F, San Clemente, CA USA 92672; 1-949-276-7477, fax 1-949-606-1904; www.validated.com. Chia-Wei Cheung, Mark A. Sherman, Andrew A. Raubitschek, and Paul J. Yazaki are with the department of cancer immunotherapeutics and tumor immunology at the City of Hope Medical Center's Beckman Research Institute in Duarte, CA; www.cityofhope.org/research/beckman-research-institute. Eric J. Lepin and Anna M. Wu are with the Crump Institute for Molecular Imaging's department of molecular and medical pharmacology at UCLA's David Geffen School of Medicine in Los Angeles, CA; www.crump.ucla.edu
| | - Andrew A. Raubitschek
- Pete Gagnon is principal consultant at Validated Biosystems Inc., 240 Avenida Vista Montana, Suite 7F, San Clemente, CA USA 92672; 1-949-276-7477, fax 1-949-606-1904; www.validated.com. Chia-Wei Cheung, Mark A. Sherman, Andrew A. Raubitschek, and Paul J. Yazaki are with the department of cancer immunotherapeutics and tumor immunology at the City of Hope Medical Center's Beckman Research Institute in Duarte, CA; www.cityofhope.org/research/beckman-research-institute. Eric J. Lepin and Anna M. Wu are with the Crump Institute for Molecular Imaging's department of molecular and medical pharmacology at UCLA's David Geffen School of Medicine in Los Angeles, CA; www.crump.ucla.edu
| | - Paul J. Yazaki
- Pete Gagnon is principal consultant at Validated Biosystems Inc., 240 Avenida Vista Montana, Suite 7F, San Clemente, CA USA 92672; 1-949-276-7477, fax 1-949-606-1904; www.validated.com. Chia-Wei Cheung, Mark A. Sherman, Andrew A. Raubitschek, and Paul J. Yazaki are with the department of cancer immunotherapeutics and tumor immunology at the City of Hope Medical Center's Beckman Research Institute in Duarte, CA; www.cityofhope.org/research/beckman-research-institute. Eric J. Lepin and Anna M. Wu are with the Crump Institute for Molecular Imaging's department of molecular and medical pharmacology at UCLA's David Geffen School of Medicine in Los Angeles, CA; www.crump.ucla.edu
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