1
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Mohammadzadehmarandi A, Zydney AL. Buffer effects on protein sieving losses in ultrafiltration and their relationship to biophysical properties. Biotechnol Prog 2024:e3481. [PMID: 38780204 DOI: 10.1002/btpr.3481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Revised: 04/05/2024] [Accepted: 05/08/2024] [Indexed: 05/25/2024]
Abstract
The design of effective ultrafiltration/diafiltration processes for protein formulation requires the use of membranes with very high protein retention. The objective of this study was to examine the effects of specific buffers on the retention of a model protein (bovine serum albumin) during ultrafiltration. Albumin retention at pH 4.8 was significantly reduced in phosphate buffer compared with that in acetate, citrate, and histidine. This behavior was consistent with a small change in the effective albumin hydrodynamic diameter as determined by dynamic light scattering. The underlying conformational changes leading to this change in diameter were explored using circular dichroism spectroscopy and differential scanning calorimetry. These results provide important insights into the factors controlling protein retention during ultrafiltration and diafiltration.
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Affiliation(s)
- Aylin Mohammadzadehmarandi
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Andrew L Zydney
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania, USA
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2
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Motevalian SP, Steen J, De Leon J, Sriskanda V, Carino I, Prashad AS, Carrillo Conde B, Arve B. Evaluation of single-use tangential flow filtration technology for purification of activated polysaccharides used in conjugate vaccine manufacturing. Biotechnol Prog 2021; 37:e3204. [PMID: 34459567 PMCID: PMC9285785 DOI: 10.1002/btpr.3204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/19/2021] [Accepted: 08/24/2021] [Indexed: 12/02/2022]
Abstract
Over the past decade, single‐use tangential flow filtration (TFF) technologies have emerged to reduce system preparation time, promote fast and flexible product change over, and ultimately shorten process development and manufacturing time/cost. In this study, the performance of a recently developed Pellicon® single‐use TFF capsule was compared against traditional Pellicon® cassettes by assessing TFF process performance (such as flux, residuals clearance, and yield) and post‐purification product attributes (such as concentration and mass‐weighted average molecular weight). Good scaling was shown by comparing process performance and product attributes across different scales and formats. Additionally, similar TFF process performance and post‐purification product attributes were observed for the single‐use capsule compared to the reusable TFF cassettes. The capsule requires a smaller flush than the cassette, and it is easier to use since it does not require a compression holder or pre‐sanitization. The results provide insight into the application of the single‐use TFF capsule and scalability of TFF processes for the purification of conjugate vaccines.
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Affiliation(s)
| | - Jonathan Steen
- Ultrafiltration Research and Development, MilliporeSigma, Bedford, Massachusetts, USA
| | - Janine De Leon
- Bioprocess Research and Development, Pfizer Inc., Andover, Massachusetts, USA
| | - Verl Sriskanda
- Analytical Research and Development, Pfizer Inc., Andover, Massachusetts, USA
| | - Ivette Carino
- Bioprocess Research and Development, Pfizer Inc., Andover, Massachusetts, USA
| | - Amar S Prashad
- Bioprocess Research and Development, Pfizer Inc., Andover, Massachusetts, USA
| | | | - Bo Arve
- Bioprocess Research and Development, Pfizer Inc., Chesterfield, Missouri, USA
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3
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Ayele HH, Latif S, Bruins ME, Müller J. Partitioning of Proteins and Anti-Nutrients in Cassava ( Manihot esculenta Crantz) Leaf Processing Fractions after Mechanical Extraction and Ultrafiltration. Foods 2021; 10:1714. [PMID: 34441490 PMCID: PMC8391839 DOI: 10.3390/foods10081714] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/19/2021] [Accepted: 07/21/2021] [Indexed: 11/17/2022] Open
Abstract
Cassava plays a major role in improving food security and reducing malnutrition. The purpose of this study was to evaluate the influence of mechanical pressing coupled with ultrafiltration (UF) on the quality of different fractions of cassava leaves. Cassava leaves harvested from the greenhouse at the University of Hohenheim were passed through a mechanical screw press to extract the juice and separate the press cake. The juice was centrifuged and filtered to separate the sediment and clear supernatant. The clear supernatant was filtered using a 10 kDa UF system. The nutritional contents of the different fractions were analyzed at each processing step. The total phenolic content was significantly lower in the press cake that had a higher fiber and ash content. The juice and sediment fractions had higher crude protein and total phenolic content. Processing did not negatively affect the concentrations of essential amino acids except for tryptophan in the juice fraction. Non-protein nitrogen was mainly present in the UF permeate, illustrating the potential of UF for upgrading soluble protein fractions. The results indicated that the different fractions during processing could be a possible source of protein for food, feed (juice, sediment, and retentate), or fiber (press cake) for ruminant feed.
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Affiliation(s)
- Haimanot Hailegiorigs Ayele
- Tropics and Subtropics Group, Institute of Agricultural Engineering, University of Hohenheim, 70599 Stuttgart, Germany; (S.L.); (J.M.)
| | - Sajid Latif
- Tropics and Subtropics Group, Institute of Agricultural Engineering, University of Hohenheim, 70599 Stuttgart, Germany; (S.L.); (J.M.)
| | - Marieke E. Bruins
- Wageningen Food & Biobased Research, Wageningen University & Research, 6708 WG Wageningen, The Netherlands;
| | - Joachim Müller
- Tropics and Subtropics Group, Institute of Agricultural Engineering, University of Hohenheim, 70599 Stuttgart, Germany; (S.L.); (J.M.)
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4
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Hillebrandt N, Vormittag P, Dietrich A, Wegner CH, Hubbuch J. Process development for cross-flow diafiltration-based VLP disassembly: A novel high-throughput screening approach. Biotechnol Bioeng 2021; 118:3926-3940. [PMID: 34170511 DOI: 10.1002/bit.27868] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 06/09/2021] [Accepted: 06/19/2021] [Indexed: 12/27/2022]
Abstract
Virus-like particles (VLPs) are particulate structures, which are applied as vaccines or delivery vehicles. VLPs assemble from subunits, named capsomeres, composed of recombinantly expressed viral structural proteins. During downstream processing, in vivo-assembled VLPs are typically dis- and reassembled to remove encapsulated impurities and to improve particle morphology. Disassembly is achieved in a high-pH solution and by the addition of a denaturant or reducing agent. The optimal disassembly conditions depend on the VLP amino acid sequence and structure, thus requiring material-consuming disassembly experiments. To this end, we developed a low-volume and high-resolution disassembly screening that provides time-resolved insight into the VLP disassembly progress. In this study, two variants of C-terminally truncated hepatitis B core antigen were investigated showing different disassembly behaviors. For both VLPs, the best capsomere yield was achieved at moderately high urea concentration and pH. Nonetheless, their disassembly behaviors differed particularly with respect to disassembly rate and aggregation. Based on the high-throughput screening results, a diafiltration-based disassembly process step was developed. Compared with mixing-based disassembly, it resulted in higher yields of up to 0.84 and allowed for integrated purification. This process step was embedded in a filtration-based process sequence of disassembly, capsomere separation, and reassembly, considerably reducing high-molecular-weight species.
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Affiliation(s)
- Nils Hillebrandt
- Institute of Engineering in Life Sciences - Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Baden-Württemberg, Germany
| | - Philipp Vormittag
- Institute of Engineering in Life Sciences - Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Baden-Württemberg, Germany
| | - Annabelle Dietrich
- Institute of Engineering in Life Sciences - Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Baden-Württemberg, Germany
| | - Christina H Wegner
- Institute of Engineering in Life Sciences - Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Baden-Württemberg, Germany
| | - Jürgen Hubbuch
- Institute of Engineering in Life Sciences - Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Baden-Württemberg, Germany
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5
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Fernandez-Cerezo L, Benner SW, Pollard JM. Streamlining process characterization efforts using the high throughput ambr® crossflow system for ultrafiltration and diafiltration processing of monoclonal antibodies. Biotechnol Prog 2020; 37:e3118. [PMID: 33369289 DOI: 10.1002/btpr.3118] [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: 09/08/2020] [Revised: 12/15/2020] [Accepted: 01/04/2021] [Indexed: 11/06/2022]
Abstract
Commercial process development for biopharmaceuticals often involves process characterization (PC) studies to gain process knowledge and understanding in preparation for process validation. One common approach to conduct PC activities is by using design-of-experiment, which can help determine the impact process parameter deviations may have on product quality attributes. Qualified scale-down systems are typically used to conduct these studies. For an ultrafiltration/diafiltration (UF/DF) application, however, a traditional scale-down still requires hundreds of milliliters of material per run and can only conduct one experiment at a time. This poses a challenge in resources as there could be 20+ experiments required for a typical UF/DF PC study. One solution to circumvent this is the use of high-throughput systems, which enable parallel experimentation by only using a fraction of the resources. Sartorius Stedim Biotech has recently commercialized the ambr® crossflow high-throughput system to meet this need. In this study, the performance of this system during a monoclonal antibody UF/DF step was first compared with a pilot- and a manufacturing-scale tangential flow filtration (TFF) system at a single operating condition. Due to material limitations, it was then compared to only the pilot-scale TFF system across wider ranges of transmembrane pressure; crossflow rate; and diafiltration concentration in a PC study. Permeate flux, aggregate content, process yield, pH/conductivity traces, retentate concentration, axial pressure drop, and turbidity values were measured at both scales. A good agreement was attained across scales, further supporting its potential use as a scale-down system.
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Affiliation(s)
- Lara Fernandez-Cerezo
- Downstream Process Development & Engineering, Merck & Co., Inc, Kenilworth, New Jersey, USA
| | - Steven W Benner
- Downstream Process Development & Engineering, Merck & Co., Inc, Kenilworth, New Jersey, USA
| | - Jennifer M Pollard
- Downstream Process Development & Engineering, Merck & Co., Inc, Kenilworth, New Jersey, USA
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Das TK, Narhi LO, Sreedhara A, Menzen T, Grapentin C, Chou DK, Antochshuk V, Filipe V. Stress Factors in mAb Drug Substance Production Processes: Critical Assessment of Impact on Product Quality and Control Strategy. J Pharm Sci 2020; 109:116-133. [DOI: 10.1016/j.xphs.2019.09.023] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/29/2019] [Accepted: 09/30/2019] [Indexed: 12/18/2022]
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7
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Model-based optimization of integrated purification sequences for biopharmaceuticals. CHEMICAL ENGINEERING SCIENCE: X 2019. [DOI: 10.1016/j.cesx.2019.100025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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8
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Enrichment and immobilization of macromolecular analytes on a porous membrane utilizing permeation drag. J Pharm Anal 2018; 8:187-193. [PMID: 29922488 PMCID: PMC6004618 DOI: 10.1016/j.jpha.2018.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 02/03/2018] [Accepted: 03/15/2018] [Indexed: 11/24/2022] Open
Abstract
Enrichment and immobilization of analytes by chemical bonding or physical adsorption is typically the first step in many commonly used analytical techniques. In this paper, we discuss a permeation drag based technique as an alternative approach for carrying out location-specific immobilization of macromolecular analytes. Fluorescein isothiocyanate (FITC) labeled macromolecules and their complexes were enriched near the surface of ultrafiltration membranes and detected by direct visual observation and fluorescence imaging. The level of macromolecule enrichment at the immobilization sites could be controlled by manipulating the filtration rate and thereby the magnitude of permeation drag. Higher enrichment as indicated by higher fluorescence intensity was observed at higher filtration rates. Also, larger macromolecules were more easily enriched. The feasibility of using this technique for detecting immunocomplexes was demonstrated by carrying out experiments with FITC labeled bovine serum albumin (FITC-BSA) and its corresponding antibody. This permeation drag based enrichment technique could potentially be developed further to suit a range of analytical applications involving more sophisticated detection methods.
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Solís Carvajal CA, Vélez Pasos CA, Ramírez-Navas JS. Tecnología de membranas: Ultrafiltración. ACTA ACUST UNITED AC 2017. [DOI: 10.31908/19098367.3546] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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10
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Matlschweiger A, Himmler G, Linhart C, Harasek M, Hahn R. A nonchromatographic process for purification of secretory immunoglobulins from caprine whey. Biotechnol Prog 2017; 33:642-653. [PMID: 28380693 DOI: 10.1002/btpr.2466] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/08/2017] [Indexed: 12/30/2022]
Abstract
Secretory immunoglobulins are an important antibody class being primarily responsible for immunoprotection of mucosal surfaces. A simple, non-chromatographic purification process for secretory immunoglobulins from caprine whey was developed. In the first process step whey was concentrated 30-40-fold on a 500 kDa membrane, thereby increasing the purity from 3% to 15%. The second step consisted of a fractionated PEG precipitation, in which high molecular weight impurities were removed first and in the second stage the secretory immunoglobulins were precipitated, leaving a majority of the low molecular weight proteins in solution. The re-dissolved secretory immunoglobulin fraction had a purity of 43% which could then be increased to 72% by diafiltration at a volume exchange factor of 10. Further increase of purity was only possible at the expense of very high buffer consumption. If diafiltration was performed directly after ultrafiltration, followed by precipitation, the yield was higher but purity was only 54%. Overall, filtration performance was characterized by high concentration polarization, therefore process conditions were set to low trans-membrane pressure and moderate protein concentration. As such purity and to a lesser extent throughput were the major objectives rather than yield, since whey, as a by-product of the dairy industry, is a cheap raw material of almost unlimited supply. Ultra-/diafiltration performance was described well by correlations using dimensionless numbers. Compared with a theoretical model (Graetz/Leveque solution) the flux was slightly overestimated. © 2017 American Institute of Chemical Engineers Biotechnol. Prog., 33:642-653, 2017.
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Affiliation(s)
- Alexander Matlschweiger
- Dept. of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 18, Vienna, 1190, Austria
| | - Gottfried Himmler
- Angothera GmbH, Donau-Oder Kanal IV SW 80, Gross-Enzersdorf, 2301, Austria
| | - Clemens Linhart
- Dept. of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 18, Vienna, 1190, Austria
| | - Michael Harasek
- Inst. of Chemical Engineering, Research Div.: Thermal Process Engineering and Simulation, Technical University of Vienna, Getreidemarkt 9, Vienna, 1060, Austria
| | - Rainer Hahn
- Dept. of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 18, Vienna, 1190, Austria
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11
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Arunkumar A, Etzel MR. Negatively charged tangential flow ultrafiltration membranes for whey protein concentration. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2014.10.049] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Gefroh E, Lutz H. An alternate diafiltration strategy to mitigate protein precipitation for low solubility proteins. Biotechnol Prog 2014; 30:646-55. [PMID: 24449613 DOI: 10.1002/btpr.1872] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Revised: 12/05/2013] [Accepted: 01/10/2014] [Indexed: 11/08/2022]
Abstract
Application of the minimum diafiltration (DF) time solution for a monoclonal antibody resulted in a 20-h process time rather than the expected 12 h. Further investigation indicated high turbidity associated with a product solubility issue that caused a flux decline. As a result, the gel flux model and the associated minimum DF time were not predictive. Multiwell plate solubility screening confirmed that the protein passed through a region of low solubility during the ultrafiltration step. Multiple approaches to address this issue were considered and a new strategy involving variable volume diafiltration (VVDF) was developed. Process modeling and simulation were used to predict performance and to select a value of the DF ratio control parameter (buffer flow/permeate flow = 0.65). Feasibility testing at the bench and pilot scales confirmed that the new strategy reduced solubility issues, fit within existing manufacturing tank volume and system area constraints, matched model predictions, and did not present significant implementation issues. Recommendations are made regarding the general value of this strategy, when it should be used, and how to implement it.
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Affiliation(s)
- Eva Gefroh
- Purification Process Development, Amgen, Inc., Seattle, WA
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13
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Paulen R, Jelemenský M, Fikar M, Kovács Z. Optimal balancing of temporal and buffer costs for ultrafiltration/diafiltration processes under limiting flux conditions. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.05.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Ghosh R, Pan S, Wang L, Lu S. A pulsed tangential-flow ultrafiltration technique for studying protein-drug binding. J Pharm Sci 2013; 102:2679-88. [PMID: 23765403 DOI: 10.1002/jps.23639] [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: 03/18/2013] [Revised: 05/17/2013] [Accepted: 05/21/2013] [Indexed: 11/07/2022]
Abstract
We describe a pulsed tangential-flow ultrafiltration technique for rapid analysis of protein-drug binding. A protein-drug pulse was injected into a tangential-flow membrane device and made to flow parallel to the surface of a protein-retaining ultrafiltration membrane. The protein and protein-drug complexes were flushed out of the device in the retentate stream, whereas the free drug present in the permeate stream was quantified using on-line UV detector. The height of the permeate drug peak and its area under the curve were both found to be proportional to the free drug concentration in the injected sample. The fraction of bound drug was determined by comparison with peak obtained with protein-free drug sample. The characteristics of the permeate drug peak such as residence time, peak width, and peak height depended on both feed and permeate flow rates. The proposed technique in addition to being fast was "self-priming" in nature because the injected samples were flushed out of the module along with the retentate and permeate. This feature makes this technique particularly suitable for automated sample analysis. The technique was validated using three-model protein-drug combinations: bovine serum albumin (BSA)-antipyrine, BSA-tryptophan, and BSA-aspirin.
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Affiliation(s)
- Raja Ghosh
- Department of Chemical Engineering, McMaster University, Hamilton, Ontario L8S 4L7, Canada.
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15
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Recent developments in manufacturing oligosaccharides with prebiotic functions. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2013; 143:257-95. [PMID: 23942834 DOI: 10.1007/10_2013_237] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The market for prebiotics is steadily growing. To satisfy this increasing worldwide demand, the introduction of effective bioprocessing methods and implementation strategies is required. In this chapter, we review recent developments in the manufacture of galactooligosaccharides (GOS) and fructooligosaccharides (FOS). These well-established oligosaccharides (OS) provide several health benefits and have excellent technological properties that make their use as food ingredients especially attractive. The biosyntheses of lactose-based GOS and sucrose-based FOS show similarities in terms of reaction mechanisms and product formation. Both GOS and FOS can be synthesized using whole cells or (partially) purified enzymes in immobilized or free forms. The biocatalysis results in a final product that consists of OS, unreacted disaccharides, and monosaccharides. This incomplete conversion poses a challenge to manufacturers because an enrichment of OS in this mixture adds value to the product. For removing digestible carbohydrates from OS, a variety of bioengineering techniques have been investigated, including downstream separation technologies, additional bioconversion steps applying enzymes, and selective fermentation strategies. This chapter summarizes the state-of-the-art manufacturing strategies and recent advances in bioprocessing technologies that can lead to new possibilities for manufacturing and purifying sucrose-based FOS and lactose-based GOS.
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16
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Paulen R, Fikar M, Foley G, Kovács Z, Czermak P. Optimal feeding strategy of diafiltration buffer in batch membrane processes. J Memb Sci 2012. [DOI: 10.1016/j.memsci.2012.04.028] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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18
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Paulen R, Foley G, Fikar M, Kovács Z, Czermak P. Minimizing the process time for ultrafiltration/diafiltration under gel polarization conditions. J Memb Sci 2011. [DOI: 10.1016/j.memsci.2011.06.044] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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20
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Liu HF, Ma J, Winter C, Bayer R. Recovery and purification process development for monoclonal antibody production. MAbs 2010; 2:480-99. [PMID: 20647768 DOI: 10.4161/mabs.2.5.12645] [Citation(s) in RCA: 322] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Hundreds of therapeutic monoclonal antibodies (mAbs) are currently in development, and many companies have multiple antibodies in their pipelines. Current methodology used in recovery processes for these molecules are reviewed here. Basic unit operations such as harvest, Protein A affinity chromatography, and additional polishing steps are surveyed. Alternative processes such as flocculation, precipitation, and membrane chromatography are discussed. We also cover platform approaches to purification methods development, use of high throughput screening methods, and offer a view on future developments in purification methodology as applied to mAbs.
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Affiliation(s)
- Hui F Liu
- Oceanside Process Research & Development, Genentech, Inc., Oceanside, CA, USA.
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21
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22
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23
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Zydney AL. Membrane technology for purification of therapeutic proteins. Biotechnol Bioeng 2009; 103:227-30. [DOI: 10.1002/bit.22308] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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24
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Harinarayan C, Skidmore K, Kao Y, Zydney A, van Reis R. Small molecule clearance in ultrafiltration/diafiltration in relation to protein interactions: Study of citrate binding to a Fab. Biotechnol Bioeng 2009; 102:1718-22. [DOI: 10.1002/bit.22196] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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Lebreton B, Brown A, van Reis R. Application of high-performance tangential flow filtration (HPTFF) to the purification of a human pharmaceutical antibody fragment expressed inEscherichia coli. Biotechnol Bioeng 2008; 100:964-74. [DOI: 10.1002/bit.21842] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abstract
Here we review key applications of separation technology in applied biology. We first sketch out the field as a whole, but then narrow our scope to the processing of fermentation products, particularly to high-value biologicals such as proteins and nucleotides. We go on to provide a qualitative overview describing the importance and general nature of this large field, major trends, and the strategies that have proven most fruitful in evolving effective separation and purification processes. We then give a detailed description of individual separations equipment and the principles governing their operation. We concentrate throughout on making the available literature accessible to the reader; we provide what is hoped to be a representative set of basic references. However, these references, in turn, include some that suggest promising new developments as well as a number of more specialized reviews. We hope that our overall result provides the reader with access to the most relevant literature.
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Affiliation(s)
- E N Lightfoot
- Department of Chemical and Biological Engineering, University of Wisconsin, Madison, USA.
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28
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Harris RJ, Shire SJ, Winter C. Commercial manufacturing scale formulation and analytical characterization of therapeutic recombinant antibodies. Drug Dev Res 2004. [DOI: 10.1002/ddr.10344] [Citation(s) in RCA: 158] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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29
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Vedantham G, Carothers SL, Belfort G, Przybycien TM. Structural Response of Bovine Growth Hormone to Dead-Ended Ultrafiltration. SEP SCI TECHNOL 2003. [DOI: 10.1081/ss-120016574] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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30
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Ho CC, Zydney AL. Transmembrane pressure profiles during constant flux microfiltration of bovine serum albumin. J Memb Sci 2002. [DOI: 10.1016/s0376-7388(02)00282-x] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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31
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Abstract
Membranes have always been an integral part of biotechnology processes. The sterile filtration of fermentation media, purification buffers, and protein product pools is standard practice in industry. Microfiltration is also used extensively for medium exchange and harvest. Ultrafiltration can be found in virtually every biotechnology process. A significant number of mammalian cell processes use filtration as an integral part of the overall strategy for viral clearance. Depth filters have also seen widespread use for the clarification of both mammalian and bacterial feed streams. Improvements in membrane technology are now focused on high-resolution applications, including improved protein-virus separation, protein purification by high-performance tangential flow filtration and enhanced membrane chromatography. These developments will allow membranes to play an important role in the evolution of the next generation of biotechnology processes.
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Affiliation(s)
- R van Reis
- Genentech Inc, 1 DNA Way, South San Francisco, CA 94080, USA.
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