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Vrablikova A, Fojtikova M, Hezova R, Simeckova P, Brezani V, Strakova N, Fraiberk M, Kotoucek J, Masek J, Psikal I. UV-C irradiation as an effective tool for sterilization of porcine chimeric VP1-PCV2bCap recombinant vaccine. Sci Rep 2023; 13:19337. [PMID: 37935819 PMCID: PMC10630496 DOI: 10.1038/s41598-023-46791-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 11/05/2023] [Indexed: 11/09/2023] Open
Abstract
Ultraviolet irradiation is an effective method of virus and bacteria inactivation. The dose of UV-C light necessary for baculovirus inactivation by measurement of fluorescent GFP protein produced by baculovirus expression system after the irradiation of baculovirus culture in doses ranging from 3.5 to 42 J/m2 was determined. At a dose of 36.8 J/m2, only 0.5% of GFP-expressing cells were detected by flow cytometry and confocal microscopy. The stability of purified VP1-PCV2bCap protein produced by baculovirus expression system was analyzed after the irradiation at doses ranging from 3.5 to 19.3 J/m2. Up to the dose of 11 J/m2, no significant effect of UV-C light on the stability of VP1-PCV2bCap was detected. We observed a dose-dependent increase in VP1-PCV2bCap-specific immune response in BALB/c mice immunized by recombinant protein sterilized by irradiation in dose 11 J/m2 with no significant difference between vaccines sterilized by UV-C light and filtration. A substantial difference in the production of VP1-PCV2bCap specific IgG was observed in piglets immunized with VP1-PCV2bCap sterilized by UV-C in comparison with protein sterilized by filtration in combination with the inactivation of baculovirus by binary ethylenimine. UV-C irradiation represents an effective method for vaccine sterilization, where commonly used methods of sterilization are not possible.
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Affiliation(s)
- Alena Vrablikova
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic.
| | - Martina Fojtikova
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic
| | - Renata Hezova
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic
| | - Pavlina Simeckova
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic
| | - Veronika Brezani
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic
| | - Nicol Strakova
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic
| | - Martin Fraiberk
- Faculty of Science, Charles University, Albertov 6, 128 00, Prague, Czech Republic
| | - Jan Kotoucek
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic
| | - Josef Masek
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic
| | - Ivan Psikal
- Department of Pharmacology and Toxicology, Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic
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Characterization and purification of pentameric chimeric protein particles using asymmetric flow field-flow fractionation coupled with multiple detectors. Anal Bioanal Chem 2021; 413:3749-3761. [PMID: 33837800 PMCID: PMC8035888 DOI: 10.1007/s00216-021-03323-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/10/2021] [Accepted: 03/31/2021] [Indexed: 11/30/2022]
Abstract
Porcine circovirus causes the post-weaning multi-systemic wasting syndrome. Despite the existence of commercial vaccines, the development of more effective and cheaper vaccines is expected. The usage of chimeric antigens allows serological differentiation between naturally infected and vaccinated animals. In this work, recombinant pentameric vaccination protein particles spontaneously assembled from identical subunits-chimeric fusion proteins derived from circovirus capsid antigen Cap and a multimerizing subunit of mouse polyomavirus capsid protein VP1 were purified and characterized using asymmetric flow field-flow fractionation (AF4) coupled with UV and MALS/DLS (multi-angle light scattering/dynamic light scattering) detectors. Various elution profiles were tested, including constant cross-flow and decreasing cross-flow (linearly and exponentially). The optimal sample retention, separation efficiency, and resolution were assessed by the comparison of the hydrodynamic radius (Rh) measured by online DLS with the Rh values calculated from the simplified retention equation according to the AF4 theory. The results show that the use of the combined elution profiles (exponential and constant cross-flow rates) reduces the time of the separation, prevents undesirable sample-membrane interaction, and yields better resolution. Besides, the results show no self-associations of the individual pentameric particles into larger clusters and no sample degradation during the AF4 separation. The Rg/Rh ratios for different fractions are in good correlation with morphological analyses performed by transmission electron microscopy (TEM). Additionally to the online analysis, the individual fractions were subjected to offline analysis, including batch DLS, TEM, and SDS-PAGE, followed by Western blot.
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Zackova Suchanova J, Hejtmankova A, Neburkova J, Cigler P, Forstova J, Spanielova H. The Protein Corona Does Not Influence Receptor-Mediated Targeting of Virus-like Particles. Bioconjug Chem 2020; 31:1575-1585. [DOI: 10.1021/acs.bioconjchem.0c00240] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jirina Zackova Suchanova
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Viničná 5, 128 44 Prague 2, Czech Republic
| | - Alzbeta Hejtmankova
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Viničná 5, 128 44 Prague 2, Czech Republic
| | - Jitka Neburkova
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Petr Cigler
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Jitka Forstova
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Viničná 5, 128 44 Prague 2, Czech Republic
| | - Hana Spanielova
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Viničná 5, 128 44 Prague 2, Czech Republic
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
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Rybicki EP. Plant molecular farming of virus‐like nanoparticles as vaccines and reagents. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2019; 12:e1587. [DOI: 10.1002/wnan.1587] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/23/2019] [Accepted: 07/31/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Edward P. Rybicki
- Biopharming Research Unit, Department of Molecular & Cell Biology University of Cape Town Cape Town South Africa
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