1
|
Mlčochová H, Michalcová L, Glatz Z. Extending the application potential of capillary electrophoresis/frontal analysis for drug‐plasma protein studies by combining it with mass spectrometry detection. Electrophoresis 2022; 43:955-963. [DOI: 10.1002/elps.202100301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 12/30/2021] [Accepted: 01/03/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Hana Mlčochová
- Department of Biochemistry Faculty of Science Masaryk University Brno Czech Republic
| | - Lenka Michalcová
- Department of Biochemistry Faculty of Science Masaryk University Brno Czech Republic
| | - Zdeněk Glatz
- Department of Biochemistry Faculty of Science Masaryk University Brno Czech Republic
| |
Collapse
|
2
|
Recent advances in the determination of unbound concentration and plasma protein binding of drugs: Analytical methods. Talanta 2021; 225:122052. [DOI: 10.1016/j.talanta.2020.122052] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 12/17/2020] [Accepted: 12/23/2020] [Indexed: 02/08/2023]
|
3
|
Nevídalová H, Michalcová L, Glatz Z. Capillary electrophoresis-based approaches for the study of affinity interactions combined with various sensitive and nontraditional detection techniques. Electrophoresis 2019; 40:625-642. [PMID: 30600537 DOI: 10.1002/elps.201800367] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 12/20/2018] [Accepted: 12/20/2018] [Indexed: 12/17/2022]
Abstract
Nearly all processes in living organisms are controlled and regulated by the synergy of many biomolecule interactions involving proteins, peptides, nucleic acids, nucleotides, saccharides, and small molecular weight ligands. There is growing interest in understanding them, not only for the purposes of interactomics as an essential part of system biology, but also in their further elucidation in disease pathology, diagnostics, and treatment. The necessity of detailed investigation of these interactions leads to the requirement of laboratory methods characterized by high efficiency and sensitivity. As a result, many instrumental approaches differing in their fundamental principles have been developed, including those based on capillary electrophoresis. Although capillary electrophoresis offers numerous advantages for such studies, it still has one serious limitation, its poor concentration sensitivity with the most commonly used detection method-ultraviolet-visible spectrometry. However, coupling capillary electrophoresis with a more sensitive detector fulfils the above-mentioned requirement. In this review, capillary electrophoresis combined with fluorescence, mass spectrometry, and several nontraditional detection techniques in affinity interaction studies are summarized and discussed, together with the possibility of conducting these measurements in microchip format.
Collapse
Affiliation(s)
- Hana Nevídalová
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Lenka Michalcová
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Zdeněk Glatz
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
| |
Collapse
|
4
|
Farcaş E, Pochet L, Crommen J, Servais AC, Fillet M. Capillary electrophoresis in the context of drug discovery. J Pharm Biomed Anal 2017; 144:195-212. [DOI: 10.1016/j.jpba.2017.02.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 02/04/2017] [Accepted: 02/13/2017] [Indexed: 01/07/2023]
|
5
|
Molecular interaction study of flavonoid derivative 3d with human serum albumin using multispectroscopic and molecular modeling approach. Talanta 2014; 126:116-21. [DOI: 10.1016/j.talanta.2014.03.046] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 03/15/2014] [Accepted: 03/18/2014] [Indexed: 01/09/2023]
|
6
|
|
7
|
Vuignier K, Veuthey JL, Carrupt PA, Schappler J. Characterization of drug-protein interactions by capillary electrophoresis hyphenated to mass spectrometry. Electrophoresis 2012; 33:3306-15. [DOI: 10.1002/elps.201200116] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 04/23/2012] [Accepted: 06/06/2012] [Indexed: 11/10/2022]
|
8
|
Improvement of a capillary electrophoresis/frontal analysis (CE/FA) method for determining binding constants: Discussion on relevant parameters. J Pharm Biomed Anal 2010; 53:1288-97. [DOI: 10.1016/j.jpba.2010.07.024] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 07/05/2010] [Accepted: 07/18/2010] [Indexed: 11/19/2022]
|
9
|
Yoo MJ, Hage DS. Use of peak decay analysis and affinity microcolumns containing silica monoliths for rapid determination of drug-protein dissociation rates. J Chromatogr A 2010; 1218:2072-8. [PMID: 20956006 DOI: 10.1016/j.chroma.2010.09.070] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Revised: 08/30/2010] [Accepted: 09/27/2010] [Indexed: 10/19/2022]
Abstract
This report examined the use of silica monoliths in affinity microcolumns containing human serum albumin (HSA) to measure the dissociation rates for various drugs from this protein. Immobilized HSA and control monolith columns with dimensions of 1 mm × 4.6 mm i.d. were prepared for this work and used with a noncompetitive peak decay method. Several drugs known to bind HSA were examined, such as warfarin, diazepam, imipramine, acetohexamide, and tolbutamide. Items that were studied and optimized in this method included the sample volume, sample concentration, and elution flow rate. It was found that flow rates up to 10 mL/min could be used in this approach. Work with HSA silica monoliths at these high flow rates made it possible to provide dissociation rate constants for drugs such as warfarin in less than 40s. The dissociation rate constants that were measured gave good agreement with values reported in the literature or that had been obtained with other solutes that had similar binding affinities for HSA. This approach is a general one that should be useful in examining the dissociation of other drugs from HSA and in providing a high-throughput method for screening drug-protein interactions.
Collapse
Affiliation(s)
- Michelle J Yoo
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
| | | |
Collapse
|
10
|
Recent applications of capillary electrophoresis–mass spectrometry (CE–MS): CE performing functions beyond separation. Anal Chim Acta 2008; 627:3-24. [DOI: 10.1016/j.aca.2008.04.023] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2008] [Revised: 04/02/2008] [Accepted: 04/08/2008] [Indexed: 11/18/2022]
|
11
|
Amon S, Zamfir AD, Rizzi A. Glycosylation analysis of glycoproteins and proteoglycans using capillary electrophoresis-mass spectrometry strategies. Electrophoresis 2008; 29:2485-507. [PMID: 18512669 DOI: 10.1002/elps.200800105] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
This review highlights recent developments in glycosylation analysis by modern MS in combination with CE based preseparation. Focused on CE-MS strategies aimed for glycotyping, the review addresses the detailed glycoform analysis of glycoproteins, glycopeptides, and proteoglycans. Glycoform analysis in the context of modern glycoproteomics is briefly addressed, as well. CZE, CIEF, and frontal analysis CE approaches hyphenated to high-resolution multistage MS for the detailed analysis of protein-linked glycan structures are overviewed in a comprehensive way. Advantages and limitations of various methodological approaches and techniques as well as mass spectrometric instrumentation are discussed in the particular context of glycoanalysis.
Collapse
Affiliation(s)
- Sabine Amon
- Institute of Analytical Chemistry and Food Chemistry, University of Vienna, Vienna, Austria
| | | | | |
Collapse
|
12
|
Katneni K, Charman SA, Porter CJH. Use of plasma proteins as solubilizing agents in in vitro permeability experiments: Correction for unbound drug concentration using the reciprocal permeability approach. J Pharm Sci 2008; 97:209-24. [PMID: 17585392 DOI: 10.1002/jps.20877] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The purpose of the present study was to explore the applicability of the reciprocal permeability approach to correct for changes in thermodynamic activity when in vitro permeability data are generated in the presence of plasma proteins. Diazepam (DIA), digoxin (DIG), and propranolol (PRO) permeability was assessed in the presence of bovine serum albumin (BSA) and bovine alpha-1-acid glycoprotein (AAG). The reciprocal permeability approach was subsequently employed to calculate the true permeability coefficient (Papp(corr)) and the operational protein association constant (nK(a)). For BSA binding, good agreement was observed between the Papp(corr) values and Papp values obtained in the absence of protein. For PRO and AAG, where binding affinity was high, deviation in the reciprocal permeability plots was evident suggesting ligand depletion at low drug/high protein concentrations. Bidirectional DIG permeability data in the presence of either BSA or AAG indicated that neither protein had an effect on the efflux transporters involved in DIG permeability. The data suggest that plasma proteins can be utilized in permeability experiments with no adverse effects on transporter function and that the reciprocal permeability approach can be used to correct permeability data for changes in unbound drug concentration.
Collapse
Affiliation(s)
- Kasiram Katneni
- Department of Pharmaceutics, Victorian College of Pharmacy, Monash University, Melbourne, Victoria 3052, Australia
| | | | | |
Collapse
|
13
|
Wan H, Bergström F. High Throughput Screening of Drug‐Protein Binding in Drug Discovery. J LIQ CHROMATOGR R T 2007. [DOI: 10.1080/10826070701190989] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Hong Wan
- a Lead Generation DMPK and Physical Chemistry , AstraZeneca R&D Mölndal , Mölndal , Sweden
| | - Fredrik Bergström
- a Lead Generation DMPK and Physical Chemistry , AstraZeneca R&D Mölndal , Mölndal , Sweden
| |
Collapse
|
14
|
Zacharis CK, Kalaitzantonakis EA, Podgornik A, Theodoridis G. Sequential injection affinity chromatography utilizing an albumin immobilized monolithic column to study drug–protein interactions. J Chromatogr A 2007; 1144:126-34. [PMID: 17227676 DOI: 10.1016/j.chroma.2006.12.081] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2006] [Revised: 12/13/2006] [Accepted: 12/18/2006] [Indexed: 11/17/2022]
Abstract
In this study, sequential injection affinity chromatography was used for drug-protein interactions studies. The analytical system used consisted of a sequential injection analysis (SIA) manifold directly connected with convective interaction media (CIM) monolithic epoxy disks modified by ligand-immobilization of protein. A non-steroidal, anti-inflammatory drug, naproxen (NAP) and bovine serum albumin (BSA) were selected as model drug and protein, respectively. The SIA system was used for sampling, introduction and propulsion of drug towards to the monolithic column. Association equilibrium constants, binding capacity at various temperatures and thermodynamic parameters (free energy DeltaG, enthalpy DeltaH) of the binding reaction of naproxen are calculated by using frontal analysis mathematics. The variation of incubation time and its effect in on-line binding mode was also studied. The results indicated that naproxen had an association equilibrium constant of 2.90 x 10(6)M(-1) at pH 7.4 and 39 degrees C for a single binding site. The associated change in enthalpy (DeltaH) was -27.36 kcal mol(-1) and the change in entropy (DeltaS) was -73 cal mol(-1)K(-1) for a single type of binding sites. The location of the binding region was examined by competitive binding experiments using a biphosphonate drug, alendronate (ALD), as a competitor agent. It was found that the two drugs occupy the same class of binding sites on BSA. All measurements were performed with fluorescence (lambda(ext)=230 nm, lambda(em)=350 nm) and spectrophotometric detection (lambda=280 nm).
Collapse
Affiliation(s)
- Constantinos K Zacharis
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University Thessaloniki, 541 24 Thessaloniki, Greece
| | | | | | | |
Collapse
|
15
|
Jensen H, Ostergaard J, Thomsen AE, Hansen SH. CE frontal analysis based on simultaneous UV and contactless conductivity detection: A general setup for studying noncovalent interactions. Electrophoresis 2007; 28:322-7. [PMID: 17203508 DOI: 10.1002/elps.200600365] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
CE frontal analysis (CE-FA) has been established as a powerful tool to study noncovalent interactions between macromolecules and small molecules such as drug substances or pharmaceutical excipients. However, when using traditional commercial CE instrumentation, a serious drawback is related to the fact that only UV-active compounds can be studied. In recent years, contactless conductivity detection has become an attractive alternative to UV detection in CE due to its high versatility. In this study, we combine contactless conductivity detection and UV detection in a highly versatile setup for profiling noncovalent interactions between low-molecular-weight molecules and macromolecules. In the case of molecules having a chromophore the setup allows determination of binding constants using two independent detectors. The new contactless conductivity detection cell is compatible with commercial CE instrumentation and is therefore easily implemented in any analysis laboratory with CE expertise.
Collapse
Affiliation(s)
- Henrik Jensen
- Department of Pharmaceutics and Analytical Chemistry, The Danish University of Pharmaceutical Sciences, Copenhagen, Denmark.
| | | | | | | |
Collapse
|
16
|
Oulianova N, Cheng D, Huebert N, Chen Y. Human oral drugs absorption is correlated to their in vitro uptake by brush border membrane vesicles. Int J Pharm 2006; 336:115-21. [PMID: 17178445 DOI: 10.1016/j.ijpharm.2006.11.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2006] [Revised: 11/01/2006] [Accepted: 11/21/2006] [Indexed: 10/23/2022]
Abstract
Brush border membrane vesicles (BBMV) were prepared from the rabbit small intestine for testing drug absorption potency through the enterocyte's apical membrane, which is an important compartment for drug oral absorption. Some modifications have been made to the traditional vesicle assay for adapting it to the 96-well plate format. The accumulation of 23 reference drugs was measured, and the data showed a good correlation with human oral absorption with a correlation coefficient R=0.853 (P<0.001), with the exception of a few false positive results. As the measured drug absorption may contain a membrane/protein binding component as well as drug uptake into vesicles, these two fractions can be discriminated by changing extravesicular osmolarity using different mannitol concentrations. This model can be applied for evaluating drug absorption rate/mechanisms, and helping drug selection in early drug research and development.
Collapse
Affiliation(s)
- Nathalie Oulianova
- Biotechnology Research Institute, National Council of Canada, 6100 Royalmount, Montreal, Quebec H4P 2R2, Canada
| | | | | | | |
Collapse
|
17
|
Ostergaard J, Heegaard NHH. Bioanalytical interaction studies executed by preincubation affinity capillary electrophoresis. Electrophoresis 2006; 27:2590-608. [PMID: 16732622 DOI: 10.1002/elps.200600047] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The versatility of CE is beneficial for the study of many types of molecular interactions, because different experimental designs can be made to suit the characteristics of a particular interaction. A very versatile starting point is the preequilibration type of affinity CE that has been used extensively for characterizing biomolecular interactions in the last 15 years. We review this field here and include a comprehensive overview of the existing preincubation ACE modes including their advantages and limitations as well as the methodological developments and applications within the bioanalytical field.
Collapse
Affiliation(s)
- Jesper Ostergaard
- Department of Pharmaceutics and Analytical Chemistry, The Danish University of Pharmaceutical Sciences, Copenhagen, Denmark.
| | | |
Collapse
|
18
|
Abstract
Systems biology depends on a comprehensive assignment and characterization of the interactions of proteins and polypeptides (functional proteomics) and of other classes of biomolecules in a given organism. High‐capacity screening methods are in place for ligand capture and interaction screening, but a detailed dynamic characterization of molecular interactions under physiological conditions in efficiently separated mixtures with minimal sample consumption is presently provided only by electrophoretic interaction analysis in capillaries, affinity CE (ACE). This has been realized in different fields of biology and analytical chemistry, and the resulting advances and uses of ACE during the last 2.5 years are covered in this review. Dealing with anything from small divalent metal ions to large supramolecular assemblies, the applications of ACE span from low‐affinity binding of broad specificity being exploited in optimizing selectivity, e.g., in enantiomer analysis to miniaturized affinity technologies, e.g., for fast processing immunoassay. Also, approaches that provide detailed quantitative characterization of analyte–ligand interaction for drug, immunoassay, and aptamer development are increasingly important, but various approaches to ACE are more and more generally applied in biological research. In addition, the present overview emphasizes that distinct challenges regarding sensitivity, parallel processing, information‐rich detection, interfacing with MS, analyte recovery, and preparative capabilities remain. This will be addressed by future technological improvements that will ensure continuing new applications of ACE in the years to come.
Collapse
Affiliation(s)
- Christian Schou
- Department of Autoimmunology, Statens Serum Institute, Copenhagen, Denmark
| | | |
Collapse
|
19
|
Wan H, Rehngren M. High-throughput screening of protein binding by equilibrium dialysis combined with liquid chromatography and mass spectrometry. J Chromatogr A 2006; 1102:125-34. [PMID: 16266710 DOI: 10.1016/j.chroma.2005.10.030] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2005] [Revised: 09/30/2005] [Accepted: 10/12/2005] [Indexed: 11/25/2022]
Abstract
A new approach for screening plasma protein binding is presented. The method is based on equilibrium dialysis combined with rapid generic LC-MS bioanalysis by using a sample pooling approach enabling high-throughput screening of protein binding in the drug discovery phase. The method is evaluated by a comparison of measured unbound free fractions f(u) (%) between single and pooled compounds for a test set of structurally diverse compounds with a wide range of unbound fractions. Test compounds include 1 acidic and 10 basic drug standards along with 36 new chemical entities. A good correlation (R2>0.95) of f(u) (%) between the single and pooled compounds is found, suggesting that at least 10 compounds can be simultaneously measured with acceptable accuracy. A simplified drug-protein binding model is applied to calculate the f(u) (%) of drugs at various drug and protein concentrations and this is applied to elucidate the applicability of the sample pooling approach from a theoretical standpoint. Moreover, pH shifts in the plasma were observed after dialysis when using different types of buffers and the impact of that on the f(u) is illustrated in association with their physicochemical properties, in particular the ionization state of compounds by the profile of effective mobility as a function of pH. A new buffer is proposed being able to minimize the pH shift of plasma during the dialysis. In addition, the application of the proposed buffer does not necessarily require adjusting plasma pH before the dialysis and utilizing a CO2 incubator during the dialysis. The effect of the ionic strengths of different buffers on MS signals is investigated with regard to ion suppression. The sample pooling method not only significantly reduces the plasma volume required but also the number of bioanalysis samples as compared to the single compound measurements by a conventional approach. The new proposed approach is especially beneficial for measuring in vitro protein binding in matrices such as mouse plasma where plasma is available only in limited amounts. The current new development will facilitate the drug discovery process by more rapidly assessing the protein binding potential of drug candidates.
Collapse
Affiliation(s)
- Hong Wan
- DMPK and Bioanalytical Chemistry, AstraZeneca R&D Mölndal, SE-431 83 Mölndal, Sweden.
| | | |
Collapse
|
20
|
Wan H, Thompson RA. Capillary electrophoresis technologies for screening in drug discovery. DRUG DISCOVERY TODAY. TECHNOLOGIES 2005; 2:171-178. [PMID: 24981845 DOI: 10.1016/j.ddtec.2005.05.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The high separation efficiency of capillary electrophoresis (CE), combined with the high selectivity and sensitivity of mass spectrometry (MS) detection offers the potential of unique resolving power and high-throughput capacity to the analysis and structural identification of complex mixtures. Recent advances in CE-MS interfaces and commercially available 96-capillary instruments have made the implementation of routine CE methods for drug screening feasible.:
Collapse
Affiliation(s)
- Hong Wan
- DMPK & Bioanalytical Chemistry, AstraZeneca R&D Mölndal, S-43183 Mölndal, Sweden.
| | - Richard A Thompson
- DMPK & Bioanalytical Chemistry, AstraZeneca R&D Mölndal, S-43183 Mölndal, Sweden
| |
Collapse
|