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Farsang E, Lukács D, József S, Horváth K. Effect of time-invariant pressure gradients on peak formation and efficiency in ultrahigh-pressure liquid chromatography. J Chromatogr A 2023; 1704:464135. [PMID: 37302250 DOI: 10.1016/j.chroma.2023.464135] [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: 03/02/2023] [Revised: 06/02/2023] [Accepted: 06/04/2023] [Indexed: 06/13/2023]
Abstract
In chromatography, pressure can affect the retention factors of compounds significantly. In liquid chromatography, this effect is primarily related to the change in the molecular volume of solute during adsorption that is remarkably high for large biomolecules such as peptides and proteins. As a result, the migration velocities of chromatographic bands vary spatially through the column affecting the degree of band broadening. In this work, based on theoretical considerations, chromatographic efficiencies are studied under pressure-induced gradient conditions. The retention factor and migration velocity of different components are examined, and it is shown that components with the same retention time can have different migration patterns. The width of the initial band after injection is affected by the pressure gradient, providing significantly thinner initial bands for compounds with higher pressure sensitivity. In addition to classical band broadening phenomena, the influence of pressure gradients on band broadening is remarkable. The positive velocity gradient leads to extra band broadening. Our results clearly demonstrate that the zones are significantly wider at the end of the column if the change of molar volume of solute during adsorption is large. If the pressure drop is increasing, this effect becomes more significant. In the same time, the high release velocity of the bands somewhat counteracts the extra band broadening effect, however, it can not offset it perfectly. As a result, the separation efficiency of large biomolecules is decreased significantly due to the chromatographic pressure gradient. Under UHPLC conditions, the extent of apparent efficiency loss can reach up to 50% compared to the intrinsic efficiency of the column.
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Affiliation(s)
- Evelin Farsang
- Research Group of Analytical Chemistry, University of Pannonia, Egyetem u. 10, H-8200 Veszprém, Hungary
| | - Diána Lukács
- Research Group of Analytical Chemistry, University of Pannonia, Egyetem u. 10, H-8200 Veszprém, Hungary
| | - Simon József
- Research Group of Analytical Chemistry, University of Pannonia, Egyetem u. 10, H-8200 Veszprém, Hungary; MS Metabolomics Research Laboratory, Centre for Structural Science, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
| | - Krisztián Horváth
- Research Group of Analytical Chemistry, University of Pannonia, Egyetem u. 10, H-8200 Veszprém, Hungary.
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2
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Fekete S, Lauber MA. Theoretical study on solute migration and band broadening occurring in pressure-enhanced liquid chromatography. J Chromatogr A 2023; 1692:463872. [PMID: 36804800 DOI: 10.1016/j.chroma.2023.463872] [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: 12/20/2022] [Revised: 02/09/2023] [Accepted: 02/11/2023] [Indexed: 02/17/2023]
Abstract
Upon recently studying the use of pressure gradients during liquid chromatography (LC), it was noted that pressure differentials across a column can have a significant impact on peak shape, not just retention as has been noted several times before. Theoretical models and thought experiments were performed here to more carefully study these effects. Two situations have been elucidated. The first is one that reflects a protein reversed phase separation wherein solute retention increases with pressure. In this condition, it has been found that a positive pressure gradient will result in band broadening while a negative pressure gradient will help yield sharper peaks. The second case that has come to be better appreciated is when solute retention decreases with pressure, which can occur in protein ion exchange (IEX) and hydrophobic interaction chromatography (HIC). In this situation, a positive pressure gradient will conversely result in peak sharpening, and a negative pressure gradient will introduce band broadening. These observations have facilitated making new fundamental understandings on pressurized separations which has in turn made it possible to begin envisioning new ways of and reasons for applying pressure enhanced LC methods.
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Affiliation(s)
- Szabolcs Fekete
- Waters Corporation, located in CMU-Rue Michel Servet 1, 1211 Geneva 4, Switzerland.
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3
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Fekete S, Fogwill M, Lauber MA. Pressure-Enhanced Liquid Chromatography, a Proof of Concept: Tuning Selectivity with Pressure Changes and Gradients. Anal Chem 2022; 94:7877-7884. [PMID: 35607711 PMCID: PMC9178557 DOI: 10.1021/acs.analchem.2c00464] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Many chromatographers
have observed that the operating pressure
can dramatically change the chromatographic retention of solutes.
Small molecules show observables changes, yet even more sizable effects
are encountered with large biomolecules. With this work, we have explored
the use of pressure as a method development parameter to alter the
reversed-phase selectivity of peptide and protein separations. An
apparatus for the facile manipulation of column pressure was assembled
through a two-pump system and postcolumn flow restriction. The primary
pump provided an eluent flow through the column, while the secondary
pump provided a pressure-modulating flow at a tee junction after the
column but ahead of a flow restrictor. Using this setup, we were able
to quickly program various constant pressure changes and even pressure
gradients. It was reconfirmed that pressure changes impact the retention
of large molecules to a much greater degree than small molecules,
making it especially interesting to consider the use of pressure to
selectively separate solutes of different sizes. The addition of pressure
to bring the column operating pressure beyond 500 bar was enough to
change the elution order of insulin (a peptide hormone) and cytochrome
C (a small serum protein). Moreover, with the proposed setup, it was
possible to combine eluent and pressure gradients in the same analytical
run. This advanced technique was applied to improve the separation
of insulin from one of its forced degradation impurities. We have
referred to this method as pressure-enhanced liquid chromatography
and believe that it can offer unseen selectivity, starting with peptide
and protein reversed-phase separations.
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Affiliation(s)
- Szabolcs Fekete
- Waters Corporation, CMU-Rue Michel Servet 1, 1211 Geneva 4, Switzerland
| | - Michael Fogwill
- Waters Corporation, 34 Maple Street, Milford, Massachusetts 01757, United States
| | - Matthew A Lauber
- Waters Corporation, 34 Maple Street, Milford, Massachusetts 01757, United States
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4
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Liang Y, Zhang L, Zhang Y. Monolithic Materials-Based RPLC-MS for Proteoform Separation and Identification. Methods Mol Biol 2022; 2500:43-53. [PMID: 35657586 DOI: 10.1007/978-1-0716-2325-1_5] [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] [Indexed: 06/15/2023]
Abstract
High-performance separation of proteoforms plays an important role in top-down proteomic ananlysis due to high complexity of the proteome. To this end, the functionalized ethylene-bridged hybrid monolithic materials have been developed for reversed-phase liquid chromatographic separation of proteoforms followed by online combination with high-resolution mass spectrometry (MS) for top-down proteomic analysis. Such monoliths have advantages of homogenously distributed functional groups in the framework, good chemical stability, and high permeability and, thus, show high resolution, good reproducibility, and low backpressure for proteoform separation. This chapter describes in detail the preparation of such monoliths and online combination with high-resolution MS for proteoform separation and identification.
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Affiliation(s)
- Yu Liang
- CAS Key Lab of Separation Sciences for Analytical Chemistry, National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Lihua Zhang
- CAS Key Lab of Separation Sciences for Analytical Chemistry, National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.
| | - Yukui Zhang
- CAS Key Lab of Separation Sciences for Analytical Chemistry, National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
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5
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Moussa A, Deridder S, Broeckhoven K, Desmet G. Detailed computational fluid dynamics study of the parameters contributing to the viscous heating band broadening in liquid chromatography at pressures up to 2500 bar in 2.1 mm columns. J Chromatogr A 2021; 1661:462683. [PMID: 34883357 DOI: 10.1016/j.chroma.2021.462683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 10/19/2022]
Abstract
Over the past years viscous heating band broadening occurring in high pressure liquid chromatography has been studied extensively. In the present numerical study, we investigate the fine details of this band broadening contribution under extreme high-pressure conditions (2500 bar). To analyze the results, we first show that viscous heating leads to two clearly distinguishable band broadening effects, one originating from the radial differences in the species migration velocity and the other from the axial variations. It was found that the radial contribution is independent of the intrinsic band broadening of the bed (i.e. band broadening in absence of viscous heating) while it strongly depends on the radial dispersion coefficient and the retention enthalpy of the analytes. On the other hand, the axial contribution is strongly dependent on the bed intrinsic band broadening and it is found to be 4 to 5 times lower than the radial contribution. We also show the strong effect of the endfittings on the temperature gradients inside the column thus on the resulting viscous heating band broadening.
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Affiliation(s)
- Ali Moussa
- Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium
| | - Sander Deridder
- KU Leuven, Department of Chemical Engineering, Process and Environmental Technology Lab, J. De Nayerlaan 5, 2860 Sint-Katelijne-Waver, Belgium
| | - Ken Broeckhoven
- Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium
| | - Gert Desmet
- Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium.
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6
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Computational fluid dynamics study of potential solutions to alleviate viscous heating band broadening in 2.1 millimeter liquid chromatography columns. J Chromatogr A 2021; 1654:462452. [PMID: 34392122 DOI: 10.1016/j.chroma.2021.462452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 01/19/2023]
Abstract
We report on a numerical simulation study of a number of potential column technology solutions to minimize the plate height contribution (Hvh) originating from the use of ultra-high pressures and their concomitant viscous heating effect. Looking as far as possible into the future of UHPLC, all main results are obtained for the case of a 2500 bar pressure gradient. However, to generalize the result, a correlation is given that can be used to interpolate the results to lower pressures with some 10% accuracy. For the considered case of a 2.1mm column, a liquid flow rate of 0.45 ml/min, an analyte with retention factor k(25°C)=3 and a retention enthalpy chosen such that ΔHR/R= -1000 K, it is found that, in order to keep the global plate height as measured at the column outlet (Hvh,glob,out) below 1 μm, the bed conductivity would need to be raised to λbed=2.4 W/m•K, i.e., 4 times higher than a typical packed bed of fully-porous or core-shell silica particles. An equivalent effect on the band broadening could be obtained if it would be possible to replace the steel column wall with a low conductivity material. In this case, a wall conductivity of 0.25 W/m•K, i.e., 64 times smaller than the conductivity of steel, would be needed to keep Hvh,glob,out below 1 μm. Results are also interpreted based on contour plots of the axial and radial velocity variation of a retained analyte.
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7
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Haidar Ahmad IA, Bennett R, Makey D, Shchurik V, Lhotka H, Mann BF, McClain R, Lu T, Hua X, Strulson CA, Loughney JW, Mangion I, Makarov AA, Regalado EL. In silico method development for the reversed-phase liquid chromatography separation of proteins using chaotropic mobile phase modifiers. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1173:122587. [PMID: 33845343 DOI: 10.1016/j.jchromb.2021.122587] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/02/2021] [Accepted: 02/05/2021] [Indexed: 10/22/2022]
Abstract
Recent advances in biomedical and pharmaceutical processes has enabled a notable increase of protein- and peptide-based drug therapies and vaccines that often contain a higher-order structure critical to their efficacy. Hyphenation of chromatographic and spectrometric techniques is at the center of all facets of biopharmaceutical analysis, purification and chemical characterization. Although computer-assisted chromatographic modeling of small molecules has reached a mature stage across the pharmaceutical industry, software-based method optimization approaches for large molecules has yet to see the same revitalization. Conformational changes of biomolecules under chromatographic conditions have been identified as the major culprit in terms of sub-optimal modeling outcomes. In order to circumvent these challenges, we herein investigate the outcomes generated via computer-assisted modeling from using different chaotropic and denaturing mobile phases (trifluoroacetic acid, sodium perchlorate and guanidine hydrochloride in acetonitrile/water-based eluents). Linear and polynomial regression retention models using ACD/Labs software were built as a function of gradient slope, column temperature and mobile phase buffer for eight different model proteins ranging from 12 to 670 kDa (holo-transferrin, cytochrome C, apomyoglobin, ribonuclease A, ribonuclease A type I-A, albumin, y-globulin and thyroglobulin bovine). Correlation between experimental and modeled outputs was substantially improved by using strong chaotropic and denaturing modifiers in the mobile phase, even when using linear regression modeling as typically observed for small molecules. On the contrary, the use of conventional TFA buffer concentrations at low column temperatures required the used of polynomial regression modeling indicating potential conformational structure changes of proteins upon chromatographic conditions. In addition, we illustrate the power of modern computer-assisted chromatography modeling combined with chaotropic agents in the developing of new RPLC assays for protein-based therapeutics and vaccines.
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Affiliation(s)
- Imad A Haidar Ahmad
- Analytical Research & Development, Merck & Co., Inc., Rahway, NJ 07065, USA.
| | - Raffeal Bennett
- Analytical Research & Development, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Devin Makey
- Department of Chemistry, Gustavus Adolphus College, Saint Peter, MN 56082, USA; Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - Vladimir Shchurik
- Analytical Research & Development, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Hayley Lhotka
- Department of Chemistry, Gustavus Adolphus College, Saint Peter, MN 56082, USA; Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - Benjamin F Mann
- Analytical Research & Development, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Ray McClain
- Analytical Research & Development, Merck & Co. Inc., West Point, PA 19486, USA
| | - Tian Lu
- Analytical Research & Development, Merck & Co. Inc., West Point, PA 19486, USA
| | - Xiaoqing Hua
- Analytical Research & Development, Merck & Co. Inc., Kenilworth, NJ 07033, USA
| | | | - John W Loughney
- Analytical Research & Development, Merck & Co. Inc., West Point, PA 19486, USA
| | - Ian Mangion
- Analytical Research & Development, Merck & Co., Inc., Rahway, NJ 07065, USA
| | - Alexey A Makarov
- Analytical Research & Development, Merck & Co., Inc., Boston, MA 02115, USA.
| | - Erik L Regalado
- Analytical Research & Development, Merck & Co., Inc., Rahway, NJ 07065, USA.
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8
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Fekete S, Murisier A, Nguyen JM, Bolton MJ, Belanger J, Beck A, Veuthey JL, Wyndham K, Lauber MA, Guillarme D. Use of Ultra-short Columns for Therapeutic Protein Separations, Part 2: Designing the Optimal Column Dimension for Reversed-Phase Liquid Chromatography. Anal Chem 2020; 93:1285-1293. [DOI: 10.1021/acs.analchem.0c01720] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Szabolcs Fekete
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU-Rue Michel Servet 1, Geneva 4 1211, Switzerland
| | - Amarande Murisier
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU-Rue Michel Servet 1, Geneva 4 1211, Switzerland
| | - Jennifer M. Nguyen
- Waters Corporation, 34 Maple Street, Milford, Massachusetts 01757-3696, United States
| | - Michael J. Bolton
- Sensata Technologies, 529 Pleasant Street, Attleboro, Massachusetts 027030-2421, United States
| | - Jonathan Belanger
- Waters Corporation, 34 Maple Street, Milford, Massachusetts 01757-3696, United States
| | - Alain Beck
- Center of Immunology Pierre Fabre, 5 Avenue Napoléon III, BP 60497, Saint-Julien-en-Genevois 74160, France
| | - Jean-Luc Veuthey
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU-Rue Michel Servet 1, Geneva 4 1211, Switzerland
| | - Kevin Wyndham
- Waters Corporation, 34 Maple Street, Milford, Massachusetts 01757-3696, United States
| | - Matthew A. Lauber
- Waters Corporation, 34 Maple Street, Milford, Massachusetts 01757-3696, United States
| | - Davy Guillarme
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU-Rue Michel Servet 1, Geneva 4 1211, Switzerland
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9
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Broeckhoven K, Desmet G. Methods to determine the kinetic performance limit of contemporary chromatographic techniques. J Sep Sci 2020; 44:323-339. [PMID: 32902146 DOI: 10.1002/jssc.202000779] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/24/2020] [Accepted: 08/31/2020] [Indexed: 12/28/2022]
Abstract
By combining separation efficiency data as a function of flow rate with the column permeability, the kinetic plot method allows to determine the limits of separation power (time vs. efficiency) of different chromatographic techniques and methods. The technique can be applied for all different types of chromatography (liquid, gas, or supercritical fluid), for different types of column morphologies (packed beds, monoliths, open tubular, micromachined columns), for pressure and electro-driven separations and in both isocratic and gradient elution mode. The present contribution gives an overview of the methods and calculations required to correctly determine these kinetic performance limits and their underlying limitations.
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Affiliation(s)
- Ken Broeckhoven
- Department of Chemical Engineering, Vrije Universiteit Brussel, Brussels, Belgium
| | - Gert Desmet
- Department of Chemical Engineering, Vrije Universiteit Brussel, Brussels, Belgium
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10
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A multiscale modelling study on the sense and nonsense of thermal conductivity enhancement of liquid chromatography packings and other potential solutions for viscous heating effects. J Chromatogr A 2020; 1620:461022. [DOI: 10.1016/j.chroma.2020.461022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 03/05/2020] [Accepted: 03/07/2020] [Indexed: 11/19/2022]
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11
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Murisier A, Lauber M, Shiner SJ, Guillarme D, Fekete S. Practical considerations on the particle size and permeability of ion-exchange columns applied to biopharmaceutical separations. J Chromatogr A 2019; 1604:460487. [PMID: 31488296 DOI: 10.1016/j.chroma.2019.460487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 08/22/2019] [Accepted: 08/26/2019] [Indexed: 02/02/2023]
Abstract
The goal of this study was to better understand the possibilities and limitations of modern cation exchange chromatography (CEX) columns for the separation of protein biopharmaceuticals (typically mAbs and related products). Several commercial and research columns consisting of a non-porous polymeric core particle with a thin hydrophilic coating and grafted ion-exchanger sulfonate groups, were compared. The impact of particle size, porosity and packing pressure on the separation of therapeutic proteins was evaluated in a systematic way. First, it was shown that the porosity of modern CEX columns depends on the applied conditions, and lower apparent porosity as well as increased column pressures were observed when using low ionic strength mobile phase (less than 0.01 M NaCl), due to swelling. Column pressure seemed to be dependent on the 1/dp3 to 1/dp5 relationships with particle size, depending on whether 0.3 M NaCl or pure water was used as mobile phase, respectively. Using 5 cm long columns packed with 2 or 2.5 µm particles could easily result in higher than 1000 bar pressure drops when the mobile phase ionic strength is low. Therefore, it is recommended that particle size not be decreased to below 2.5 µm so that technologies can remain compatible with the current state of ultra-high pressure (UHPLC) instrumentation. This recommendation is underscored by the fact that a decrease in particle size does not produce improved separations, since the particles are non-porous (no intra-particle diffusion nor resistance to mass transfer) and that large solutes follow an on-off (bind and elute) type retention mechanism. The only advantage of CEX columns packed with small particles is that they can provide more specific surface area per unit length of column, and thus facilitate higher throughput methods. In conclusion, it appears that there is no need to further decrease the particle size in CEX since decreasing their particle size may result in more drawbacks than benefits.
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Affiliation(s)
- Amarande Murisier
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CMU - Rue Michel Servet, 1, 1211 Geneva 4, Switzerland
| | - Matthew Lauber
- Waters Corporation, 34 Maple Street, Milford, MA 01757-3696, USA
| | - Stephen J Shiner
- Waters Corporation, 34 Maple Street, Milford, MA 01757-3696, USA
| | - Davy Guillarme
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CMU - Rue Michel Servet, 1, 1211 Geneva 4, Switzerland
| | - Szabolcs Fekete
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CMU - Rue Michel Servet, 1, 1211 Geneva 4, Switzerland.
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12
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Kristl A, Lokošek P, Pompe M, Podgornik A. Effect of pressure on the retention of macromolecules in ion exchange chromatography. J Chromatogr A 2019; 1597:89-99. [PMID: 30926255 DOI: 10.1016/j.chroma.2019.03.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 02/22/2019] [Accepted: 03/11/2019] [Indexed: 01/05/2023]
Abstract
Shorter analysis times and greater resolving power are contributing factors for transfer of separation methods from an HPLC to a UHPLC system when performing analysis in biopharmaceutical or clinical research. The effect of pressure on separations in reversed phase chromatography is well described, however such investigations on ion exchange columns were previously not conducted. In this study we describe the effect of pressure on retention properties of proteins, oligonucleotides and plasmid DNA in ion exchange chromatography. Different column inlet pressures were obtained by coupling restriction capillaries with column outlet and performing separations at a constant temperature and mobile phase flow rate. Macromolecules were separated in isocratic mode as well as with various linear gradients of salt concentration at a constant pH value. The measured retention time increase was up to 80% for isocratic and 20% for gradient separations for a 500 bar increase in pressure. The effect of pressure was validated on a separate instrument after few months from initial experiments. The influence of pressure on retention properties seems to be dependent on the size, shape and flexibility of the macromolecule and causes different retention shifts when separating a sample with diverse analytes. Such changes in retention time can sometimes exceed the criteria set by European Pharmacopoeia (Ph. Eur.) for the allowable method adjustment and are thus considered to be a result of a different separation method. Therefore, the pressure effect that follows method transfer from HPLC to UHPLC conditions should not be neglected even for gradient separations in ion exchange chromatography, as the resulting retention change may cause revalidation of the separation method.
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Affiliation(s)
- Anja Kristl
- Faculty for Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Primož Lokošek
- Faculty for Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Matevž Pompe
- Faculty for Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Aleš Podgornik
- Faculty for Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia; COBIK, Tovarniška 26, 5270 Ajdovščina, Slovenia.
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13
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Wahl O, Jorajuria S. Development and validation of a new UHPLC method for related proteins in insulin and insulin analogues as an alternative to the European Pharmacopoeia RP-HPLC method. J Pharm Biomed Anal 2019; 166:71-82. [DOI: 10.1016/j.jpba.2018.12.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 12/19/2018] [Accepted: 12/20/2018] [Indexed: 01/26/2023]
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14
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Vera C, Samuelsson J, Fornstedt T, Dennis G, Shalliker R. Protocol for the visualisation of axial temperature gradients in ultra high performance liquid chromatography using infrared cameras. Microchem J 2018. [DOI: 10.1016/j.microc.2018.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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15
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Bobály B, Veuthey JL, Guillarme D, Fekete S. New developments and possibilities of wide-pore superficially porous particle technology applied for the liquid chromatographic analysis of therapeutic proteins. J Pharm Biomed Anal 2018; 158:225-235. [DOI: 10.1016/j.jpba.2018.06.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 05/31/2018] [Accepted: 06/02/2018] [Indexed: 01/01/2023]
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16
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Lambert N, Felinger A. The effect of the frictional heat on retention and efficiency in thermostated or insulated chromatographic columns packed with sub-2-μm particles. J Chromatogr A 2018; 1565:89-95. [DOI: 10.1016/j.chroma.2018.06.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 06/11/2018] [Accepted: 06/16/2018] [Indexed: 11/28/2022]
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17
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Broeckhoven K, Desmet G. Considerations for the use of ultra-high pressures in liquid chromatography for 2.1 mm inner diameter columns. J Chromatogr A 2017; 1523:183-192. [DOI: 10.1016/j.chroma.2017.07.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 07/10/2017] [Accepted: 07/11/2017] [Indexed: 10/19/2022]
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18
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Ahmad IAH, Hrovat F, Soliven A, Clarke A, Boswell P, Tarara T, Blasko A. A 14 Parameter Study of UHPLC’s for Method Development Transfer and Troubleshooting. Chromatographia 2017. [DOI: 10.1007/s10337-017-3337-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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19
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Hydrophobic interaction chromatography for the characterization of monoclonal antibodies and related products. J Pharm Biomed Anal 2016; 130:3-18. [DOI: 10.1016/j.jpba.2016.04.004] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 03/30/2016] [Accepted: 04/01/2016] [Indexed: 11/20/2022]
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Astefanei A, Dapic I, Camenzuli M. Different Stationary Phase Selectivities and Morphologies for Intact Protein Separations. Chromatographia 2016; 80:665-687. [PMID: 28529348 PMCID: PMC5413533 DOI: 10.1007/s10337-016-3168-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 08/17/2016] [Accepted: 09/06/2016] [Indexed: 12/18/2022]
Abstract
The central dogma of biology proposed that one gene encodes for one protein. We now know that this does not reflect reality. The human body has approximately 20,000 protein-encoding genes; each of these genes can encode more than one protein. Proteins expressed from a single gene can vary in terms of their post-translational modifications, which often regulate their function within the body. Understanding the proteins within our bodies is a key step in understanding the cause, and perhaps the solution, to disease. This is one of the application areas of proteomics, which is defined as the study of all proteins expressed within an organism at a given point in time. The human proteome is incredibly complex. The complexity of biological samples requires a combination of technologies to achieve high resolution and high sensitivity analysis. Despite the significant advances in mass spectrometry, separation techniques are still essential in this field. Liquid chromatography is an indispensable tool by which low-abundant proteins in complex samples can be enriched and separated. However, advances in chromatography are not as readily adapted in proteomics compared to advances in mass spectrometry. Biologists in this field still favour reversed-phase chromatography with fully porous particles. The purpose of this review is to highlight alternative selectivities and stationary phase morphologies that show potential for application in top-down proteomics; the study of intact proteins.
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Affiliation(s)
- A. Astefanei
- Centre for Analytical Science in Amsterdam (CASA), Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - I. Dapic
- Centre for Analytical Science in Amsterdam (CASA), Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - M. Camenzuli
- Centre for Analytical Science in Amsterdam (CASA), Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
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Bobaly B, Beck A, Veuthey JL, Guillarme D, Fekete S. Impact of organic modifier and temperature on protein denaturation in hydrophobic interaction chromatography. J Pharm Biomed Anal 2016; 131:124-132. [PMID: 27589029 DOI: 10.1016/j.jpba.2016.08.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 08/23/2016] [Accepted: 08/25/2016] [Indexed: 01/16/2023]
Abstract
The goal of this study was to better understand the chromatographic conditions in which monoclonal antibodies (mAbs) of broad hydrophobicity scale and a cysteine conjugated antibody-drug conjugate (ADCs), namely brentuximab-vedotin, could denaturate. For this purpose, some experiments were carried out in HIC conditions using various organic modifier in natures and proportions, different mobile phase temperatures and also different pHs. Indeed, improper analytical conditions in hydrophobic interaction chromatography (HIC) may create reversed-phase (RP) like harsh conditions and therefore protein denaturation. In terms of organic solvents, acetonitrile (ACN) and isopropanol (IPA) were tested with proportions ranging from 0 to 40%. It appeared that IPA was a less denaturating solvent than ACN, but should be used in a reasonable range (10-15%). Temperature should also be kept reasonable (below 40°C), to limit denaturation under HIC conditions. However, the combined increase of temperature and organic content induced denaturation of protein biopharmaceuticals in all cases. Indeed, above 30-40°C and 10-15% organic modifier in mobile phase B, heavy chain (HC) and light chain (LC) fragments dissociated. Mobile phase pH was also particularly critical and denaturation was significant even under moderately acidic conditions (pH of 5.4). Today, HIC is widely used for measuring drug-to-antibody ratio (DAR) of ADCs, which is a critical quality attribute of such samples. Here, we demonstrated that the estimation of average DAR can be dependent on the amount of organic modifier in the mobile phase under HIC conditions, due to the better recovery of the most hydrophobic proteins in presence of organic solvent (IPA). So, special care should be taken when measuring the average DAR of ADCs in HIC.
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Affiliation(s)
- Balázs Bobaly
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Boulevard d'Yvoy 20, 1211 Geneva 4, Switzerland
| | - Alain Beck
- Center of Immunology Pierre Fabre, 5 Avenue Napoléon III, BP 60497, 74160 Saint-Julien-en-Genevois, France(1)
| | - Jean-Luc Veuthey
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Boulevard d'Yvoy 20, 1211 Geneva 4, Switzerland
| | - Davy Guillarme
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Boulevard d'Yvoy 20, 1211 Geneva 4, Switzerland
| | - Szabolcs Fekete
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Boulevard d'Yvoy 20, 1211 Geneva 4, Switzerland.
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Grinias JP, Wong JMT, Kennedy RT. Repeatability of gradient ultrahigh pressure liquid chromatography-tandem mass spectrometry methods in instrument-controlled thermal environments. J Chromatogr A 2016; 1461:42-50. [PMID: 27457561 DOI: 10.1016/j.chroma.2016.07.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 07/14/2016] [Accepted: 07/16/2016] [Indexed: 11/15/2022]
Abstract
The impact of viscous friction on eluent temperature and column efficiency in liquid chromatography is of renewed interest as the need for pressures exceeding 1000bar to use with columns packed with sub-2μm particles has grown. One way the development of axial and radial temperature gradients that arise due to viscous friction can be affected is by the thermal environment the column is placed in. In this study, a new column oven integrated into an ultrahigh pressure liquid chromatograph that enables both still-air and forced-air operating modes is investigated to find the magnitude of the effect of the axial thermal gradient that forms in 2.1×100mm columns packed with sub-2μm particles in these modes. Temperature increases of nearly 30K were observed when the generated power of the column exceeded 25W/m. The impact of the heating due to viscous friction on the repeatability of peak capacity, elution time, and peak area ratio to an internal standard for a gradient UHPLC-MS/MS method to analyze neurotransmitters was found to be limited. This result indicates that high speed UHPLC-MS/MS gradient methods under conditions of high viscous friction may be possible without the negative effects typically observed with isocratic separations under similar conditions.
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Affiliation(s)
- James P Grinias
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, United States
| | - Jenny-Marie T Wong
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, United States
| | - Robert T Kennedy
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, United States; Department of Pharmacology, University of Michigan, Ann Arbor, MI 48109, United States.
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ÿsberg D, Samuelsson J, Fornstedt T. A fundamental study of the impact of pressure on the adsorption mechanism in reversed-phase liquid chromatography. J Chromatogr A 2016; 1457:97-106. [DOI: 10.1016/j.chroma.2016.06.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 06/10/2016] [Accepted: 06/12/2016] [Indexed: 11/30/2022]
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24
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Tyteca E, Veuthey JL, Desmet G, Guillarme D, Fekete S. Computer assisted liquid chromatographic method development for the separation of therapeutic proteins. Analyst 2016; 141:5488-501. [DOI: 10.1039/c6an01520d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
This review summarizes the use of computer assisted liquid chromatographic method development for the analytical characterization of protein biopharmaceuticals.
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Affiliation(s)
- Eva Tyteca
- Vrije Universiteit Brussel
- Department of Chemical Engineering
- B-1050 Brussels
- Belgium
| | - Jean-Luc Veuthey
- School of Pharmaceutical Sciences
- University of Geneva
- University of Lausanne
- 1211 Geneva 4
- Switzerland
| | - Gert Desmet
- Vrije Universiteit Brussel
- Department of Chemical Engineering
- B-1050 Brussels
- Belgium
| | - Davy Guillarme
- School of Pharmaceutical Sciences
- University of Geneva
- University of Lausanne
- 1211 Geneva 4
- Switzerland
| | - Szabolcs Fekete
- School of Pharmaceutical Sciences
- University of Geneva
- University of Lausanne
- 1211 Geneva 4
- Switzerland
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Tanaka N, McCalley DV. Core–Shell, Ultrasmall Particles, Monoliths, and Other Support Materials in High-Performance Liquid Chromatography. Anal Chem 2015; 88:279-98. [DOI: 10.1021/acs.analchem.5b04093] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - David V. McCalley
- Centre for Research in Biosciences, University of the West of England, Frenchay, Bristol BS16 1QY, U.K
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Evaluation of a new wide-pore superficially porous material with carbon core and nanodiamond-polymer shell for the separation of proteins. J Chromatogr A 2015; 1414:51-9. [DOI: 10.1016/j.chroma.2015.08.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 07/27/2015] [Accepted: 08/13/2015] [Indexed: 11/23/2022]
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Fekete S, Veuthey JL, Guillarme D. Comparison of the most recent chromatographic approaches applied for fast and high resolution separations: Theory and practice. J Chromatogr A 2015; 1408:1-14. [DOI: 10.1016/j.chroma.2015.07.014] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 06/30/2015] [Accepted: 07/03/2015] [Indexed: 10/23/2022]
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