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Boclinville A, Vandevenne M, Ambroggio E, Thelen N, Thiry M, Jacobs N, Brans A, Fillet M, Servais AC. Interaction studies between human papillomavirus virus-like particles and laminin 332 by affinity capillary electrophoresis assisted by bio-layer interferometry. Talanta 2024; 270:125602. [PMID: 38199121 DOI: 10.1016/j.talanta.2023.125602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/22/2023] [Accepted: 12/23/2023] [Indexed: 01/12/2024]
Abstract
Human papillomavirus (HPV) interacts, in vitro, with laminin 332 (LN332), a key component of the extracellular matrix. In this study, we performed bio-layer interferometry (BLI) and affinity capillary electrophoresis (ACE) to investigate the binding properties of this interaction. Virus-like particles (VLPs), composed of the HPV16 L1 major capsid protein, were used as HPV model and LN332 as the VLPs binding partner. Using BLI, we quantitatively determined the kinetics of the interaction, via the measurement of VLP binding and release from LN332 immobilized onto the surface of aminopropylsilane biosensors. We found an averaged kon of 1.74 x 104 M-1s-1 and an averaged koff of 1.50 x 10-4 s-1. Furthermore, an ACE method was developed to study the interaction under physiological conditions, where the interactants are moving freely in solution, without any fluorescence labeling. Specifically, a constant amount of HPV16-VLPs was preincubated with increasing LN332 concentrations and then the samples were injected in the capillary electrophoresis instrument. A shift in the migration time of the HPV16-VLP/LN332 complexes, carrying an increasing number of LN332 molecules bound per VLP, was observed. The mobility of the complexes was found to decrease with increasing LN332 concentrations in the sample. It was used to quantify stability constant. From BLI and ACE approaches, we reported an apparent equilibrium dissociation constant in the nanomolar range (8.89 nM and 17.7 nM, respectively) for the complex between HPV16-VLPs and LN332.
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Affiliation(s)
- Aurore Boclinville
- Laboratory for the Analysis of Medicines (LAM), Center for Interdisciplinary Research on Medicines (CIRM), University of Liège, Liège, Belgium
| | - Marylène Vandevenne
- InBioS - Centre for Protein Engineering, Département des Sciences de La Vie, University of Liège, Liège, Belgium
| | - Ernesto Ambroggio
- InBioS - Centre for Protein Engineering, Département des Sciences de La Vie, University of Liège, Liège, Belgium
| | - Nicolas Thelen
- Cellular and Tissular Biology, GIGA-Neurosciences, University of Liège, Liège, Belgium
| | - Marc Thiry
- Cellular and Tissular Biology, GIGA-Neurosciences, University of Liège, Liège, Belgium
| | - Nathalie Jacobs
- Cellular and Molecular Immunology, GIGA-Research, University of Liège, Liège, Belgium
| | - Alain Brans
- InBioS - Centre for Protein Engineering, Département des Sciences de La Vie, University of Liège, Liège, Belgium
| | - Marianne Fillet
- Laboratory for the Analysis of Medicines (LAM), Center for Interdisciplinary Research on Medicines (CIRM), University of Liège, Liège, Belgium
| | - Anne-Catherine Servais
- Laboratory for the Analysis of Medicines (LAM), Center for Interdisciplinary Research on Medicines (CIRM), University of Liège, Liège, Belgium.
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Geurink L, van Tricht E, van der Burg D, Scheppink G, Pajic B, Dudink J, Sänger-van de Griend C. Sixteen capillary electrophoresis applications for viral vaccine analysis. Electrophoresis 2021; 43:1068-1090. [PMID: 34739151 DOI: 10.1002/elps.202100269] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/14/2021] [Accepted: 10/25/2021] [Indexed: 12/14/2022]
Abstract
A broad range of CE applications from our organization is reviewed to give a flavor of the use of CE within the field of vaccine analyses. Applicability of CE for viral vaccine characterization, and release and stability testing of seasonal influenza virosomal vaccines, universal subunit influenza vaccines, Sabin inactivated polio vaccines (sIPV), and adenovirus vector vaccines were demonstrated. Diverse CZE, CE-SDS, CGE, and cIEF methods were developed, validated, and applied for virus, protein, posttranslational modifications, DNA, and excipient concentration determinations, as well as for the integrity and composition verifications, and identity testing (e.g., CZE for intact virus particles, CE-SDS application for hemagglutinin quantification and influenza strain identification, chloride or bromide determination in process samples). Results were supported by other methods such as RP-HPLC, dynamic light scattering (DLS), and zeta potential measurements. Overall, 16 CE methods are presented that were developed and applied, comprising six adenovirus methods, five viral protein methods, and methods for antibodies determination of glycans, host cell-DNA, excipient chloride, and process impurity bromide. These methods were applied to support in-process control, release, stability, process- and product characterization and development, and critical reagent testing. Thirteen methods were validated. Intact virus particles were analyzed at concentrations as low as 0.8 pmol/L. Overall, CE took viral vaccine testing beyond what was previously possible, improved process and product understanding, and, in total, safety, efficacy, and quality.
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Affiliation(s)
- Lars Geurink
- Janssen Vaccines and Prevention B.V., CN Leiden, The Netherlands.,Department of Medicinal Chemistry, Faculty of Pharmacy, Biomedical Centre, Uppsala University, Uppsala, Sweden
| | - Ewoud van Tricht
- Janssen Vaccines and Prevention B.V., CN Leiden, The Netherlands
| | | | - Gerard Scheppink
- Janssen Vaccines and Prevention B.V., CN Leiden, The Netherlands
| | - Bojana Pajic
- Janssen Vaccines and Prevention B.V., CN Leiden, The Netherlands
| | - Justin Dudink
- Janssen Vaccines and Prevention B.V., CN Leiden, The Netherlands
| | - Cari Sänger-van de Griend
- Janssen Vaccines and Prevention B.V., CN Leiden, The Netherlands.,Department of Medicinal Chemistry, Faculty of Pharmacy, Biomedical Centre, Uppsala University, Uppsala, Sweden.,Kantisto B.V., Baarn, The Netherlands
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On-line separation and quantification of virus antigens of different serotypes in multivalent vaccines by capillary zone electrophoresis: A case study for quality control of foot-and-mouth disease virus vaccines. J Chromatogr A 2020; 1637:461834. [PMID: 33383242 DOI: 10.1016/j.chroma.2020.461834] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/15/2020] [Accepted: 12/17/2020] [Indexed: 12/16/2022]
Abstract
Accurate quantification of effective antigens of different serotypes is crucial for quality control of multivalent vaccines but challenging. A simple and rapid capillary zone electrophoresis (CZE) method was developed for on-line separation and quantification of foot-and-mouth disease virus (FMDV) antigens in monovalent and bivalent FMDV vaccines. The FMDV peak identity in CZE was demonstrated by the study of FMDV dissociation combined with high performance size exclusion chromatography (HPSEC) analysis. After optimizing CZE conditions including UV detecting wavelength, injection volume, and separation voltage, both serotype A and O FMDV showed good reproducibility (RSD <5%) and linear responses (R2=0.999) between the peak area and FMDV content in the concentration range of 15-400 μg/mL. The two serotypes of FMDV with similar size had different migration time in CZE according to their different zeta potential, which allows them to be separated and quantified, with accuracy of <10% relative error. CZE was then successfully applied for antigen quantification of commercial O monovalent and A/O bivalent FMDV vaccines. Compared with HPSEC, CZE was not only able to quantify each serotype of FMDV, but also free from interference of nucleic acids impurities. In summary, the CZE can be a simple, rapid, and reliable tool for quality control of monovalent and bivalent FMDV vaccines. The CZE method can also be further extended to the quality control of other multivalent virus and virus like particle vaccines.
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Chylewska A, Ogryzek M, Makowski M. Modern Approach to Medical Diagnostics - the Use of Separation Techniques in Microorganisms Detection. Curr Med Chem 2019; 26:121-165. [DOI: 10.2174/0929867324666171023164813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Revised: 04/20/2017] [Accepted: 05/20/2016] [Indexed: 11/22/2022]
Abstract
Background:Analytical chemistry and biotechnology as an interdisciplinary fields of science have been developed during many years and are experiencing significant growth, to cover a wide range of microorganisms separation techniques and methods, utilized for medical therapeutic and diagnostic purposes. Currently scientific reports contribute by introducing electrophoretical and immunological methods and formation of devices applied in food protection (avoiding epidemiological diseases) and healthcare (safety ensuring in hospitals).Methods:Electrophoretic as well as nucleic-acid-based or specific immunological methods have contributed tremendously to the advance of analyses in recent three decades, particularly in relation to bacteria, viruses and fungi identifications, especially in medical in vitro diagnostics, as well as in environmental or food protection.Results:The paper presents the pathogen detection competitiveness of these methods against conventional ones, which are still too time consuming and also labor intensive. The review is presented in several parts following the current trends in improved pathogens separation and detection methods and their subsequent use in medical diagnosis.Discussion:Part one, consists of elemental knowledge about microorganisms as an introduction to their characterization: descriptions of divisions, sizes, membranes (cells) components. Second section includes the development, new technological and practical solution descriptions used in electrophoretical procedures during microbes analyses, with special attention paid to bio-samples analyses like blood, urine, lymph or wastewater. Third part covers biomolecular areas that have created a basis needed to identify the progress, limitations and challenges of nucleic-acid-based and immunological techniques discussed to emphasize the advantages of new separative techniques in selective fractionating of microorganisms.
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Affiliation(s)
- Agnieszka Chylewska
- Laboratory of Intermolecular Interactions, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80- 308 Gdansk, Poland
| | - Małgorzata Ogryzek
- Laboratory of Intermolecular Interactions, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80- 308 Gdansk, Poland
| | - Mariusz Makowski
- Laboratory of Intermolecular Interactions, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80- 308 Gdansk, Poland
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Marie H, Dana Š, Jiří Š, Karel Š, Marta Š, Filip R, Roman P. Electrophoretic techniques for purification, separation and detection of Kayvirus with subsequent control by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and microbiological methods. J Chromatogr A 2018; 1570:155-163. [DOI: 10.1016/j.chroma.2018.07.078] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 07/25/2018] [Accepted: 07/28/2018] [Indexed: 12/17/2022]
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Gollapudi D, Wycuff DL, Schwartz RM, Cooper JW, Cheng KC. Development of high‐throughput and high sensitivity capillary gel electrophoresis platform method for Western, Eastern, and Venezuelan equine encephalitis (WEVEE) virus like particles (VLPs) purity determination and characterization. Electrophoresis 2017; 38:2610-2621. [DOI: 10.1002/elps.201700217] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 06/25/2017] [Accepted: 06/25/2017] [Indexed: 12/11/2022]
Affiliation(s)
| | - Diane L Wycuff
- Vaccine Production Program VRC NIAID NIH Gaithersburg MD USA
| | - Richard M Schwartz
- Vaccine Production Program VRC NIAID NIH Gaithersburg MD USA
- Synlogic Cambridge MA USA
| | | | - KC Cheng
- Vaccine Production Program VRC NIAID NIH Gaithersburg MD USA
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7
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Bettonville V, Nicol JTJ, Furst T, Thelen N, Piel G, Thiry M, Fillet M, Jacobs N, Servais AC. Quantitation and biospecific identification of virus-like particles of human papillomavirus by capillary electrophoresis. Talanta 2017; 175:325-330. [PMID: 28841998 DOI: 10.1016/j.talanta.2017.07.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 07/11/2017] [Accepted: 07/14/2017] [Indexed: 01/28/2023]
Abstract
Capillary electrophoresis (CE) for HPV-VLP quantitation is a very interesting alternative technique compared to those currently used in viral analysis, such as SDS-PAGE, Western blot or protein assay that are destructive and semi-quantitative or non specific. In this study, the quantitative performance of the CE method was evaluated. A main issue in virus quantitation is the absence of reference material. Therefore, the concentration of a HPV16-VLP sample produced in the laboratory was determined using ELISA with Gardasil®, after adjuvant dissolution, as reference material and conformational H16.V5 antibody. HPV16-VLP concentration was found to influence particles electrophoretic mobility until a plateau was reached for concentrations ≤ 50µgml-1. As zeta potential is directly proportional to the electrophoretic mobility, it was measured at different HPV-VLP concentrations and the results were in complete accordance with the measured electrophoretic mobilities. The concentration dependence of the electrophoretic mobility could be explained by an overlap of the electrical double layers of adjacent particles. The HPV16-VLP peak identity was demonstrated unequivocally by the study of HPV16-VLP/H16.V5 antibody complex formation using affinity CE. Finally, the CE method was successfully validated following the ICH Q2R1 guidelines. To overcome the sample heterogeneity issue, a well-designed sample preparation was used. Considering sample complexity, validation results were satisfactory with maximum repeatability and intermediate precision RSD of 12.2% and a maximum relative bias of 1.4%.
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Affiliation(s)
- Virginie Bettonville
- Laboratory for the Analysis of Medicines (LAM), Dept. of Pharmaceutical Sciences, CIRM, University of Liège, Liège, Belgium
| | - Jérôme T J Nicol
- Cellular and Molecular Immunology, GIGA-Research University of Liège, Liège, Belgium
| | - Tania Furst
- Laboratory of Pharmaceutical Technology and Biopharmacy, Dept. of Pharmaceutical Sciences, CIRM, University of Liège, Liège, Belgium
| | - Nicolas Thelen
- Cellular and Tissular Biology, GIGA-Neurosciences, University of Liège, Liège, Belgium
| | - Géraldine Piel
- Laboratory of Pharmaceutical Technology and Biopharmacy, Dept. of Pharmaceutical Sciences, CIRM, University of Liège, Liège, Belgium
| | - Marc Thiry
- Cellular and Tissular Biology, GIGA-Neurosciences, University of Liège, Liège, Belgium
| | - Marianne Fillet
- Laboratory for the Analysis of Medicines (LAM), Dept. of Pharmaceutical Sciences, CIRM, University of Liège, Liège, Belgium
| | - Nathalie Jacobs
- Cellular and Molecular Immunology, GIGA-Research University of Liège, Liège, Belgium
| | - Anne-Catherine Servais
- Laboratory for the Analysis of Medicines (LAM), Dept. of Pharmaceutical Sciences, CIRM, University of Liège, Liège, Belgium.
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8
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van Tricht E, Geurink L, Backus H, Germano M, Somsen GW, Sänger–van de Griend CE. One single, fast and robust capillary electrophoresis method for the direct quantification of intact adenovirus particles in upstream and downstream processing samples. Talanta 2017; 166:8-14. [DOI: 10.1016/j.talanta.2017.01.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 01/03/2017] [Accepted: 01/06/2017] [Indexed: 12/30/2022]
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9
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Bettonville V, Nicol JTJ, Thelen N, Thiry M, Fillet M, Jacobs N, Servais AC. Study of intact virus-like particles of human papillomavirus by capillary electrophoresis. Electrophoresis 2016; 37:579-86. [DOI: 10.1002/elps.201500431] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 11/13/2015] [Accepted: 11/27/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Virginie Bettonville
- Laboratory for the Analysis of Medicines (LAM), Department of Pharmaceutical Sciences, CIRM; University of Liège; Liège Belgium
| | - Jérôme T. J. Nicol
- Cellular and Molecular Immunology; GIGA-Research University of Liège; Liège Belgium
| | - Nicolas Thelen
- Cellular and Tissular Biology, GIGA-Neurosciences; University of Liège; Liège Belgium
| | - Marc Thiry
- Cellular and Tissular Biology, GIGA-Neurosciences; University of Liège; Liège Belgium
| | - Marianne Fillet
- Laboratory for the Analysis of Medicines (LAM), Department of Pharmaceutical Sciences, CIRM; University of Liège; Liège Belgium
| | - Nathalie Jacobs
- Cellular and Molecular Immunology; GIGA-Research University of Liège; Liège Belgium
| | - Anne-Catherine Servais
- Laboratory for the Analysis of Medicines (LAM), Department of Pharmaceutical Sciences, CIRM; University of Liège; Liège Belgium
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Halewyck H, Schotte L, Oita I, Thys B, Van Eeckhaut A, Heyden YV, Rombaut B. Affinity capillary electrophoresis to evaluate the complex formation between poliovirus and nanobodies. J Sep Sci 2014; 37:3729-37. [DOI: 10.1002/jssc.201400406] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 09/29/2014] [Accepted: 09/29/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Hadewych Halewyck
- Department of Pharmaceutical Biotechnology and Molecular Biology; Vrije Universiteit Brussel; Brussels Belgium
- Center for Neurosciences; Vrije Universiteit Brussel; Brussels Belgium
| | - Lise Schotte
- Department of Pharmaceutical Biotechnology and Molecular Biology; Vrije Universiteit Brussel; Brussels Belgium
- Center for Neurosciences; Vrije Universiteit Brussel; Brussels Belgium
| | - Iuliana Oita
- Department of Analytical Chemistry and Pharmaceutical Technology; Center for Pharmaceutical Research (CePhar); Vrije Universiteit Brussel; Brussels Belgium
| | - Bert Thys
- Department of Pharmaceutical Biotechnology and Molecular Biology; Vrije Universiteit Brussel; Brussels Belgium
- Center for Neurosciences; Vrije Universiteit Brussel; Brussels Belgium
| | - Ann Van Eeckhaut
- Department of Pharmaceutical Chemistry and Drug Analysis; Vrije Universiteit Brussel; Brussels Belgium
- Center for Neurosciences; Vrije Universiteit Brussel; Brussels Belgium
| | - Yvan Vander Heyden
- Department of Analytical Chemistry and Pharmaceutical Technology; Center for Pharmaceutical Research (CePhar); Vrije Universiteit Brussel; Brussels Belgium
| | - Bart Rombaut
- Department of Pharmaceutical Biotechnology and Molecular Biology; Vrije Universiteit Brussel; Brussels Belgium
- Center for Neurosciences; Vrije Universiteit Brussel; Brussels Belgium
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A rapid, low-cost quantitative diagnostic method for hepatitis C virus infection using capillary zone electrophoresis. Eur J Clin Microbiol Infect Dis 2013; 33:439-52. [PMID: 24253493 DOI: 10.1007/s10096-013-1976-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 09/02/2013] [Indexed: 01/01/2023]
Abstract
Hepatitis C virus (HCV)-RNA amplification is a costly procedure in terms of time and reagents. Consequently, the search for more a cost-effective specific HCV diagnostic method is of great interest. Capillary zone electrophoresis (CZE) methods that detect HCV in serum, plasma, whole blood, and ascites without the need for sample pretreatment are not currently available. Here, a CZE method was developed that detects a larger specific peak in serum and other body fluids of HCV-infected patients than that found in healthy or hepatitis B virus (HBV)-infected individuals. The nature of the HCV peak was investigated using biochemical treatments, including RNase, DNase, and chymotrypsin enzymes. Electroeluted HCV peak was applied to transmission electron microscopy; electron micrographs showed that the HCV peak was attributed to virus-like particles with diameter and morphological properties similar to non-enveloped HCV nucleocapsids. The determination of CZE-HCV and HCV-RNA levels using quantitative real-time reverse transcriptase-polymerase chain reaction (qRT-PCR) in 258 subjects revealed that these two tests were highly correlated (r = 0.92, p < 0.0001). One important issue of HCV testing is the storage conditions of serum to obtain reliable results. Serum samples at -20 °C showed the best preservation of the HCV peak up to one year. In conclusion, we detected HCV using CZE in a microliters volume from different body fluids. Besides the stability of samples in maintaining their peak height, the HCV-CZE test is rapid (<15 min) and a well-suited and low-cost technique. Thus, a major improvement in the quantitative diagnosis of HCV infection was established.
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Subirats X, Weiss VU, Gösler I, Puls C, Limbeck A, Allmaier G, Kenndler E. Characterization of rhinovirus subviral A particles via capillary electrophoresis, electron microscopy and gas phase electrophoretic mobility molecular analysis: part II. Electrophoresis 2013; 34:1600-9. [PMID: 23483563 DOI: 10.1002/elps.201200686] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 01/29/2013] [Accepted: 01/31/2013] [Indexed: 11/06/2022]
Abstract
Human rhinoviruses (HRVs) are valuable tools in the investigation of early viral infection steps due to their far reaching (although still incomplete) characterization. During endocytosis, native virions first loose one of the four capsid proteins (VP4); corresponding particles sediment at 135S and were termed subviral A particles. Subsequently, the viral RNA genome leaves the viral shell giving rise to empty capsids. In continuation of our previous work with HRV serotype 2 (HRV2) intermediate subviral particles, in which we were able to discriminate by CE even between two intermediates (AI and AII) of virus uncoating, we further concentrated on the characterization of AI particles with the electrophoretic mobility of around -17.2 × 10(-9) m(2) /Vs at 20°C. In the course of our present work we related these particles to virions as previously described at the subviral A stage of uncoating (and as such sedimenting at 135S) by determination of their protein and RNA content--in comparison to native virions AI particles did not include VP4, however, still 93% of their initial RNA content. Binding of an mAb specific for subviral particles demonstrated antigenic rearrangements on the capsid surface at the AI stage. Furthermore, we investigated possible factors stabilizing intermediates of virus uncoating. We could exclude the influence of the previously suspected so-called contaminant of virus preparation on HRV2 subviral particle formation. Instead, we regarded other factors being part of the virus preparation system and found a dependence of AI particle formation on the presence of divalent cations.
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Affiliation(s)
- Xavier Subirats
- Max F. Perutz Laboratories, Department of Medical Biochemistry, Medical University of Vienna, Vienna Biocenter (VBC), Vienna, Austria.
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13
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The effect of anionic surfactant on poliovirus particles during capillary electrophoresis. J Pharm Biomed Anal 2012; 71:79-88. [DOI: 10.1016/j.jpba.2012.07.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Revised: 07/26/2012] [Accepted: 07/30/2012] [Indexed: 11/21/2022]
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14
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Oita I, Halewyck H, Pieters S, Thys B, Heyden YV, Rombaut B. Poliovirus separation from cell extracts using capillary electrophoresis: Potential use in vaccine production and control? J Virol Methods 2012; 185:7-17. [DOI: 10.1016/j.jviromet.2012.05.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 05/09/2012] [Accepted: 05/21/2012] [Indexed: 12/21/2022]
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15
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Subirats X, Blaas D, Kenndler E. Recent developments in capillary and chip electrophoresis of bioparticles: Viruses, organelles, and cells. Electrophoresis 2011; 32:1579-90. [PMID: 21647924 DOI: 10.1002/elps.201100048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Revised: 02/18/2011] [Accepted: 02/20/2011] [Indexed: 11/09/2022]
Abstract
In appropriate aqueous buffer solutions, biological particles usually exhibit a particular electric surface charge due to exposed charged or chargeable functional groups (amino acid residues, acidic carbohydrate moieties, etc.). Consequently, these bioparticles can migrate in solution under the influence of an electric field allowing separation according to their electrophoretic mobilities or their pI values. Based on these properties, electromigration methods are of eminent interest for the characterization, separation, and detection of such particles. The present review discusses the research papers published between 2008 and 2010 dealing with isoelectric focusing and zone electrophoresis of viruses, organelles and microorganisms (bacteria and yeast cells) in the capillary and the chip format.
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Affiliation(s)
- Xavier Subirats
- Max F. Perutz Laboratories, Medical University of Vienna, Vienna Biocenter (VBC), Vienna, Austria.
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Oita I, Halewyck H, Pieters S, Dejaegher B, Thys B, Rombaut B, Vander Heyden Y. Rational use of stacking principles for signal enhancement in capillary electrophoretic separations of poliovirus samples. J Pharm Biomed Anal 2011; 55:135-45. [DOI: 10.1016/j.jpba.2010.12.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Accepted: 12/16/2010] [Indexed: 11/29/2022]
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