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Gao K, Rao J, Chen B. Plant protein solubility: A challenge or insurmountable obstacle. Adv Colloid Interface Sci 2024; 324:103074. [PMID: 38181662 DOI: 10.1016/j.cis.2023.103074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/26/2023] [Accepted: 12/22/2023] [Indexed: 01/07/2024]
Abstract
Currently, there is an increasing focus on comprehending the solubility of plant-based proteins, driven by the rising demand for animal-free food formulations. The solubility of proteins plays a crucial role in impacting other functional properties of proteins and food processing. Consequently, understanding protein solubility in a deeper sense may allow a better usage of plant proteins. Herein, we discussed the definition of protein solubility from both thermodynamic and colloidal perspectives. A range of factors affecting solubility of plant proteins are generalized, including intrinsic factors (amino acids composition, hydrophobicity), and extrinsic factors (pH, ionic strength, extraction and drying methods). Current methods to enhance solubility are outlined, including microwave, high intensity ultrasound, hydrostatic pressure, glycation, pH-shifting, enzymatic hydrolysis, enzymatic cross-linking, complexation and modulation of amino acids. We base the discussion on diverse modified methods of nitrogen solubility index available to determine and analyze protein solubility followed by addressing how other indigenous components affect the solubility of plant proteins. Some nonproteinaceous constituents in proteins such as carbohydrates and polyphenols may exert positive or negative impact on protein solubility. Appropriate protein extraction and modification methods that meet consumer and manufacturers requirements concerning nutritious and eco-friendly foods with lower cost should be investigated and further explored.
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Affiliation(s)
- Kun Gao
- Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Jiajia Rao
- Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Bingcan Chen
- Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA.
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2
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Erkamp NA, Qi R, Welsh TJ, Knowles TPJ. Microfluidics for multiscale studies of biomolecular condensates. LAB ON A CHIP 2022; 23:9-24. [PMID: 36269080 PMCID: PMC9764808 DOI: 10.1039/d2lc00622g] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 09/04/2022] [Indexed: 05/12/2023]
Abstract
Membraneless organelles formed through condensation of biomolecules in living cells have become the focus of sustained efforts to elucidate their mechanisms of formation and function. These condensates perform a range of vital functions in cells and are closely connected to key processes in functional and aberrant biology. Since these systems occupy a size scale intermediate between single proteins and conventional protein complexes on the one hand, and cellular length scales on the other hand, they have proved challenging to probe using conventional approaches from either protein science or cell biology. Additionally, condensate can form, solidify and perform functions on various time-scales. From a physical point of view, biomolecular condensates are colloidal soft matter systems, and microfluidic approaches, which originated in soft condensed matter research, have successfully been used to study biomolecular condensates. This review explores how microfluidics have aided condensate research into the thermodynamics, kinetics and other properties of condensates, by offering high-throughput and novel experimental setups.
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Affiliation(s)
- Nadia A Erkamp
- Yusuf Hamied Department of Chemistry, Centre for Misfolding Diseases, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
| | - Runzhang Qi
- Yusuf Hamied Department of Chemistry, Centre for Misfolding Diseases, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
| | - Timothy J Welsh
- Yusuf Hamied Department of Chemistry, Centre for Misfolding Diseases, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
| | - Tuomas P J Knowles
- Yusuf Hamied Department of Chemistry, Centre for Misfolding Diseases, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
- Cavendish Laboratory, Department of Physics, University of Cambridge, J J Thomson Ave, Cambridge, CB3 0HE, UK
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3
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Wei D, Wang M, Wang H, Liu G, Fang J, Jiang Y. Development of a Method for Fast Assessment of Protein Solubility Based on Ultrasonic Dispersion and Differential Centrifugation Technology. ACS OMEGA 2022; 7:31338-31347. [PMID: 36092597 PMCID: PMC9453942 DOI: 10.1021/acsomega.2c03666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
Protein solubility is very important for protein crystallization, bioprocess development, and protein application. In this study, a method based on the stability of a protein dispersion system is proposed for fast assessment of protein solubility, which mainly involves ultrasonic dispersion, differential centrifugation, and spectral measurement (UDDCS) and curvature estimation. The appropriate ultrasonic time and centrifugal time were experimentally determined at first. The results show that the relationship between the standard deviation and the protein concentrations originally added accords with the modified exponential equation, and the corresponding concentration of the maximum curvature point is defined as the solubility of the protein. Lysozyme solubility data in NaCl aqueous solutions and zein solubility data in ethanol aqueous solutions are selected to verify the UDDCS method by comparing the data obtained by the UDDCS method and the results from references, and the results indicate that the UDDCS method is reliable, universal, and time-saving. Finally, measurements of zein solubility in NaOH solution and casein solubility in urea aqueous solution were conducted as test cases by the UDDCS method.
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Affiliation(s)
- Dongwei Wei
- School
of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, China
| | - Meng Wang
- School
of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, China
| | - Hongdi Wang
- College
of Material, Chemistry and Chemical Engineering, Key Laboratory of
Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, China
| | - Guijin Liu
- School
of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
| | - Jun Fang
- School
of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, China
| | - Yanbin Jiang
- School
of Chemistry and Chemical Engineering, South
China University of Technology, Guangzhou 510640, China
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Bussamra BC, Gomes JC, Freitas S, Mussatto SI, da Costa AC, van der Wielen L, Ottens M. A robotic platform to screen aqueous two-phase systems for overcoming inhibition in enzymatic reactions. BIORESOURCE TECHNOLOGY 2019; 280:37-50. [PMID: 30754004 DOI: 10.1016/j.biortech.2019.01.136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/27/2019] [Accepted: 01/29/2019] [Indexed: 06/09/2023]
Abstract
Aqueous two-phase systems (ATPS) can be applied to enzymatic reactions that are affected by product inhibition. In the biorefinery context, sugars inhibit the cellulolytic enzymes in charge of converting the biomass. Here, we present a strategy to select an ATPS (formed by polymer and salt) that can separate sugar and enzymes. This automated and miniaturized method is able to determine phase diagrams and partition coefficients of solutes in these. Tailored approaches to quantify the solutes are presented, taking into account the limitations of techniques that can be applied with ATPS due to the interference of phase forming components with the analytics. The developed high-throughput (HT) platform identifies suitable phase forming components and the tie line of operation. This fast methodology proposes to screen up to six different polymer-salt systems in eight days and supplies the results to understand the influence of sugar and protein concentrations on their partition coefficients.
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Affiliation(s)
- Bianca Consorti Bussamra
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands; Development of Processes and Products (DDPP), University of Campinas, Av. Albert Einstein, 500, 6066 Campinas, Brazil.
| | - Joana Castro Gomes
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Sindelia Freitas
- Development of Processes and Products (DDPP), University of Campinas, Av. Albert Einstein, 500, 6066 Campinas, Brazil
| | - Solange I Mussatto
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet, Building 220, 2800 Kongens Lyngby, Denmark.
| | - Aline Carvalho da Costa
- Development of Processes and Products (DDPP), University of Campinas, Av. Albert Einstein, 500, 6066 Campinas, Brazil.
| | - Luuk van der Wielen
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands; Bernal Institute, University of Limerick, Castletroy, Limerick, Ireland.
| | - Marcel Ottens
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands.
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Practical aspects of the automated preparation of aqueous two phase systems for the analysis of biological macromolecules. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1073:60-68. [PMID: 29241086 DOI: 10.1016/j.jchromb.2017.09.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 09/25/2017] [Accepted: 09/29/2017] [Indexed: 11/22/2022]
Abstract
A robust strategy for the automated preparation of aqueous two-phase systems (ATPS) using a liquid handling sample processor was developed using gravimetric methods: to determine the accuracy of preparation. The major robotic control parameters requiring adjustment were; speed of aspiration and dispense; delay times following aspiration and dispense alongside measures to control cross-contamination during phase sampling. In general mixture compositions of both polymer/polymer and polymer/salt mixtures could be prepared with a target bias accuracy of less than 5%. However, we found that the bias accuracy with which systems of defined TLL and MR could be constructed was highly dependent on the tie line length of the ATPS and the geometrical form of the ATPS co-existence curve. For systems with a very low degree of curvature (PEG/salt systems here) increases in bias (accuracy) are appreciable at relatively long tie line lengths. Where the degree of curvature is more pronounced (PEG/dextran systems) closer approach to the critical point was possible without major effect on bias/accuracy. Application of the strategy to the measurement of the partitioning of phosphorylated and dephosphorylated forms of the model protein ovalbumin are reported. Differences in partition of phosphorylated (native) forms and dephosphorylated forms could be demonstrated. In a PEG/salt system this was manifest as a substantial decrease in solubility based on overall protein recovery derived from accurate knowledge of the system mass ratio. In a PEG/dextran system differences in partition coefficient could be demonstrated between phosphorylated and dephosphorylated forms.
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Radtke CP, Schermeyer MT, Zhai YC, Göpper J, Hubbuch J. Implementation of an analytical microfluidic device for the quantification of protein concentrations in high-throughput format. Eng Life Sci 2016. [DOI: 10.1002/elsc.201500185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Carsten Philipp Radtke
- Institute of Engineering in Life Sciences, Section IV: Molecular Separation Engineering; Karlsruhe Institute of Technology; Karlsruhe Germany
| | - Marie-Therese Schermeyer
- Institute of Engineering in Life Sciences, Section IV: Molecular Separation Engineering; Karlsruhe Institute of Technology; Karlsruhe Germany
| | - Yün Claudia Zhai
- Institute of Engineering in Life Sciences, Section IV: Molecular Separation Engineering; Karlsruhe Institute of Technology; Karlsruhe Germany
| | - Jacqueline Göpper
- Institute of Engineering in Life Sciences, Section IV: Molecular Separation Engineering; Karlsruhe Institute of Technology; Karlsruhe Germany
| | - Jürgen Hubbuch
- Institute of Engineering in Life Sciences, Section IV: Molecular Separation Engineering; Karlsruhe Institute of Technology; Karlsruhe Germany
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Baumann P, Hubbuch J. Downstream process development strategies for effective bioprocesses: Trends, progress, and combinatorial approaches. Eng Life Sci 2016; 17:1142-1158. [PMID: 32624742 DOI: 10.1002/elsc.201600033] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 03/09/2016] [Accepted: 04/07/2016] [Indexed: 12/26/2022] Open
Abstract
The biopharmaceutical industry is at a turning point moving toward a more customized and patient-oriented medicine (precision medicine). Straightforward routines such as the antibody platform process are extended to production processes for a new portfolio of molecules. As a consequence, individual and tailored productions require generic approaches for a fast and dedicated purification process development. In this article, different effective strategies in biopharmaceutical purification process development are reviewed that can analogously be used for the new generation of antibodies. Conventional approaches based on heuristics and high-throughput process development are discussed and compared to modern technologies such as multivariate calibration and mechanistic modeling tools. Such approaches constitute a good foundation for fast and effective process development for new products and processes, but their full potential becomes obvious in a correlated combination. Thus, different combinatorial approaches are presented, which might become future directions in the biopharmaceutical industry.
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Affiliation(s)
- Pascal Baumann
- Biomolecular Separation Engineering Karlsruhe Institute of Technology (KIT) Karlsruhe Germany
| | - Jürgen Hubbuch
- Biomolecular Separation Engineering Karlsruhe Institute of Technology (KIT) Karlsruhe Germany
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8
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Thygs FB, Merz J, Schembecker G. Automation of Solubility Measurements on a Robotic Platform. Chem Eng Technol 2016. [DOI: 10.1002/ceat.201500572] [Citation(s) in RCA: 6] [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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9
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Ladd Effio C, Oelmeier SA, Hubbuch J. High-throughput characterization of virus-like particles by interlaced size-exclusion chromatography. Vaccine 2016; 34:1259-67. [PMID: 26845741 DOI: 10.1016/j.vaccine.2016.01.035] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 01/12/2016] [Accepted: 01/17/2016] [Indexed: 11/26/2022]
Abstract
The development and manufacturing of safe and effective vaccines relies essentially on the availability of robust and precise analytical techniques. Virus-like particles (VLPs) have emerged as an important and valuable class of vaccines for the containment of infectious diseases. VLPs are produced by recombinant protein expression followed by purification procedures to minimize the levels of process- and product-related impurities. The control of these impurities is necessary during process development and manufacturing. Especially monitoring of the VLP size distribution is important for the characterization of the final vaccine product. Currently used methods require long analysis times and tailor-made assays. In this work, we present a size-exclusion ultra-high performance liquid chromatography (SE-UHPLC) method to characterize VLPs and quantify aggregates within 3.1min per sample applying interlaced injections. Four analytical SEC columns were evaluated for the analysis of human B19 parvo-VLPs and murine polyoma-VLPs. The optimized method was successfully used for the characterization of five recombinant protein-based VLPs including human papillomavirus (HPV) VLPs, human enterovirus 71 (EV71) VLPs, and chimeric hepatitis B core antigen (HBcAg) VLPs pointing out the generic applicability of the assay. Measurements were supported by transmission electron microscopy and dynamic light scattering. It was demonstrated that the iSE-UHPLC method provides a rapid, precise and robust tool for the characterization of VLPs. Two case studies on purification tools for VLP aggregates and storage conditions of HPV VLPs highlight the relevance of the analytical method for high-throughput process development and process monitoring of virus-like particles.
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Affiliation(s)
- Christopher Ladd Effio
- Karlsruhe Institute of Technology, Institute of Process Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe, Germany
| | - Stefan A Oelmeier
- Karlsruhe Institute of Technology, Institute of Process Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe, Germany; Boehringer Ingelheim Pharma GmbH & Co. KG, Germany
| | - Jürgen Hubbuch
- Karlsruhe Institute of Technology, Institute of Process Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe, Germany.
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10
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Rathore AS, Singh SK. Production of Protein Therapeutics in the Quality by Design (QbD) Paradigm. TOPICS IN MEDICINAL CHEMISTRY 2016. [DOI: 10.1007/7355_2015_5004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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11
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Tekewe A, Connors NK, Sainsbury F, Wibowo N, Lua LH, Middelberg AP. A rapid and simple screening method to identify conditions for enhanced stability of modular vaccine candidates. Biochem Eng J 2015. [DOI: 10.1016/j.bej.2015.04.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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12
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Diederich P, Hoffmann M, Hubbuch J. High-throughput process development of purification alternatives for the protein avidin. Biotechnol Prog 2015; 31:957-73. [DOI: 10.1002/btpr.2104] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 04/21/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Patrick Diederich
- Inst. of Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT); Karlsruhe Germany
| | - Marc Hoffmann
- Inst. of Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT); Karlsruhe Germany
| | - Jürgen Hubbuch
- Inst. of Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT); Karlsruhe Germany
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13
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Noyes A, Huffman B, Godavarti R, Titchener-Hooker N, Coffman J, Sunasara K, Mukhopadhyay T. High throughput screening of particle conditioning operations: I. System design and method development. Biotechnol Bioeng 2015; 112:1554-67. [PMID: 25728932 DOI: 10.1002/bit.25575] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 02/15/2015] [Accepted: 02/17/2015] [Indexed: 11/06/2022]
Abstract
The biotech industry is under increasing pressure to decrease both time to market and development costs. Simultaneously, regulators are expecting increased process understanding. High throughput process development (HTPD) employs small volumes, parallel processing, and high throughput analytics to reduce development costs and speed the development of novel therapeutics. As such, HTPD is increasingly viewed as integral to improving developmental productivity and deepening process understanding. Particle conditioning steps such as precipitation and flocculation may be used to aid the recovery and purification of biological products. In this first part of two articles, we describe an ultra scale-down system (USD) for high throughput particle conditioning (HTPC) composed of off-the-shelf components. The apparatus is comprised of a temperature-controlled microplate with magnetically driven stirrers and integrated with a Tecan liquid handling robot. With this system, 96 individual reaction conditions can be evaluated in parallel, including downstream centrifugal clarification. A comprehensive suite of high throughput analytics enables measurement of product titer, product quality, impurity clearance, clarification efficiency, and particle characterization. HTPC at the 1 mL scale was evaluated with fermentation broth containing a vaccine polysaccharide. The response profile was compared with the Pilot-scale performance of a non-geometrically similar, 3 L reactor. An engineering characterization of the reactors and scale-up context examines theoretical considerations for comparing this USD system with larger scale stirred reactors. In the second paper, we will explore application of this system to industrially relevant vaccines and test different scale-up heuristics.
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Affiliation(s)
- Aaron Noyes
- The Advanced Centre for Biochemical Engineering, Department of Biochemical Engineering, University College London, Bernard Katz Building, Gordon Street, London, WC1E 7JE, UK.,Pfizer Bioprocess R&D, Andover, Massachusetts
| | - Ben Huffman
- Pfizer Bioprocess R&D, Chesterfield, Missouri
| | | | - Nigel Titchener-Hooker
- The Advanced Centre for Biochemical Engineering, Department of Biochemical Engineering, University College London, Bernard Katz Building, Gordon Street, London, WC1E 7JE, UK
| | | | | | - Tarit Mukhopadhyay
- The Advanced Centre for Biochemical Engineering, Department of Biochemical Engineering, University College London, Bernard Katz Building, Gordon Street, London, WC1E 7JE, UK.
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Berg A, Schuetz M, Dismer F, Hubbuch J. Automated measurement of apparent protein solubility to rapidly assess complex parameter interactions. FOOD AND BIOPRODUCTS PROCESSING 2014. [DOI: 10.1016/j.fbp.2013.10.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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15
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Alternative separation steps for monoclonal antibody purification: Combination of centrifugal partitioning chromatography and precipitation. J Chromatogr A 2013; 1319:118-26. [DOI: 10.1016/j.chroma.2013.10.043] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 10/10/2013] [Accepted: 10/12/2013] [Indexed: 11/21/2022]
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16
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Yoshimoto N, Minakuchi K, Itoh D, Isakari Y, Yamamoto S. High-throughput process development methods for chromatography and precipitation of proteins: Advantages and precautions. Eng Life Sci 2013. [DOI: 10.1002/elsc.201200121] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Noriko Yoshimoto
- Bioprocess Engineering Laboratory, School of Engineering and Graduate School of Medicine; Yamaguchi University; Ube Japan
| | - Kazunobu Minakuchi
- Bioprocess Engineering Laboratory, School of Engineering and Graduate School of Medicine; Yamaguchi University; Ube Japan
| | - Daisuke Itoh
- Bioprocess Engineering Laboratory, School of Engineering and Graduate School of Medicine; Yamaguchi University; Ube Japan
| | - Yu Isakari
- Bioprocess Engineering Laboratory, School of Engineering and Graduate School of Medicine; Yamaguchi University; Ube Japan
| | - Shuichi Yamamoto
- Bioprocess Engineering Laboratory, School of Engineering and Graduate School of Medicine; Yamaguchi University; Ube Japan
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Nfor BK, Hylkema NN, Wiedhaup KR, Verhaert PDEM, van der Wielen LAM, Ottens M. High-throughput protein precipitation and hydrophobic interaction chromatography: salt effects and thermodynamic interrelation. J Chromatogr A 2011; 1218:8958-73. [PMID: 21868020 DOI: 10.1016/j.chroma.2011.08.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 05/01/2011] [Accepted: 08/07/2011] [Indexed: 11/29/2022]
Abstract
Salt-induced protein precipitation and hydrophobic interaction chromatography (HIC) are two widely used methods for protein purification. In this study, salt effects in protein precipitation and HIC were investigated for a broad combination of proteins, salts and HIC resins. Interrelation between the critical thermodynamic salting out parameters in both techniques was equally investigated. Protein precipitation data were obtained by a high-throughput technique employing 96-well microtitre plates and robotic liquid handling technology. For the same protein-salt combinations, isocratic HIC experiments were performed using two or three different commercially available stationary phases-Phenyl Sepharose low sub, Butyl Sepharose and Resource Phenyl. In general, similar salt effects and deviations from the lyotropic series were observed in both separation methods, for example, the reverse Hofmeister effect reported for lysozyme below its isoelectric point and at low salt concentrations. The salting out constant could be expressed in terms of the preferential interaction parameter in protein precipitation, showing that the former is, in effect, the net result of preferential interaction of a protein with water molecules and salt ions in its vicinity. However, no general quantitative interrelation was found between salting out parameters or the number of released water molecules in protein precipitation and HIC. In other words, protein solubility and HIC retention factor could not be quantitatively interrelated, although for some proteins, regular trends were observed across the different resins and salt types.
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Affiliation(s)
- Beckley K Nfor
- Department of Biotechnology, Delft University of Technology, Julianalaan 67, 2628 BC, Delft, The Netherlands
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19
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Ahmad SS, Dalby PA. Thermodynamic parameters for salt-induced reversible protein precipitation from automated microscale experiments. Biotechnol Bioeng 2010; 108:322-32. [DOI: 10.1002/bit.22957] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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20
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Nfor BK, Verhaert PD, van der Wielen LA, Hubbuch J, Ottens M. Rational and systematic protein purification process development: the next generation. Trends Biotechnol 2009; 27:673-9. [DOI: 10.1016/j.tibtech.2009.09.002] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2009] [Revised: 08/24/2009] [Accepted: 09/01/2009] [Indexed: 11/28/2022]
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