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Examination of Immunogenic Properties of Recombinant Antigens Based on p22 Protein from African Swine Fever Virus

INTRODUCTION: The single member of the Asfarviridae family is African swine fever virus (ASFV). This double-stranded DNA virus infects wild and farmed swine and loses the pig industry large sums of money. An inner envelope, capsid, and outer envelope are parts of the ASFV particle containing structu...

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Autores principales: Díaz, Carlos, Salát, Jiří, Břínek Kolařová, Dagmar, Celer, Vladimír, Frébort, Ivo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Sciendo 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9597933/
https://www.ncbi.nlm.nih.gov/pubmed/36349136
http://dx.doi.org/10.2478/jvetres-2022-0043
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author Díaz, Carlos
Salát, Jiří
Břínek Kolařová, Dagmar
Celer, Vladimír
Frébort, Ivo
author_facet Díaz, Carlos
Salát, Jiří
Břínek Kolařová, Dagmar
Celer, Vladimír
Frébort, Ivo
author_sort Díaz, Carlos
collection PubMed
description INTRODUCTION: The single member of the Asfarviridae family is African swine fever virus (ASFV). This double-stranded DNA virus infects wild and farmed swine and loses the pig industry large sums of money. An inner envelope, capsid, and outer envelope are parts of the ASFV particle containing structural proteins playing different roles in the process of infection or host immune defence evasion. When expressed by the baculovirus system, the p22 protein from the inner envelope was found to induce partial protection against a virulent virus strain. This study aimed to express a part of this protein in a different system and evaluate its immunogenicity. MATERIAL AND METHODS: We designed two proteins, the extracellular (C terminal) part of the p22 protein (p22Ct) and its fusion with the heat-labile enterotoxin B subunit from Escherichia coli (LTB-p22Ct), which is supposed to be a potent enhancer of the immune response. Both proteins were produced in the E. coli expression system and subsequently used for mice immunisation to analyse their safety and immunogenicity. RESULTS: The protein fused with LTB did not show the expected adjuvant properties and did not prove safe, because abscess formation was observed after immunisation. In contrast, immunisation with the p22Ct protein alone induced a higher antibody titre but caused no adverse symptoms. CONCLUSION: These results show the high potential of the p22Ct region as an immunogenic protein for ASFV serological detection purposes.
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spelling pubmed-95979332022-11-07 Examination of Immunogenic Properties of Recombinant Antigens Based on p22 Protein from African Swine Fever Virus Díaz, Carlos Salát, Jiří Břínek Kolařová, Dagmar Celer, Vladimír Frébort, Ivo J Vet Res Research Articles INTRODUCTION: The single member of the Asfarviridae family is African swine fever virus (ASFV). This double-stranded DNA virus infects wild and farmed swine and loses the pig industry large sums of money. An inner envelope, capsid, and outer envelope are parts of the ASFV particle containing structural proteins playing different roles in the process of infection or host immune defence evasion. When expressed by the baculovirus system, the p22 protein from the inner envelope was found to induce partial protection against a virulent virus strain. This study aimed to express a part of this protein in a different system and evaluate its immunogenicity. MATERIAL AND METHODS: We designed two proteins, the extracellular (C terminal) part of the p22 protein (p22Ct) and its fusion with the heat-labile enterotoxin B subunit from Escherichia coli (LTB-p22Ct), which is supposed to be a potent enhancer of the immune response. Both proteins were produced in the E. coli expression system and subsequently used for mice immunisation to analyse their safety and immunogenicity. RESULTS: The protein fused with LTB did not show the expected adjuvant properties and did not prove safe, because abscess formation was observed after immunisation. In contrast, immunisation with the p22Ct protein alone induced a higher antibody titre but caused no adverse symptoms. CONCLUSION: These results show the high potential of the p22Ct region as an immunogenic protein for ASFV serological detection purposes. Sciendo 2022-08-30 /pmc/articles/PMC9597933/ /pubmed/36349136 http://dx.doi.org/10.2478/jvetres-2022-0043 Text en © 2022 C. Díaz et al. published by Sciendo https://creativecommons.org/licenses/by-nc-nd/3.0/This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
spellingShingle Research Articles
Díaz, Carlos
Salát, Jiří
Břínek Kolařová, Dagmar
Celer, Vladimír
Frébort, Ivo
Examination of Immunogenic Properties of Recombinant Antigens Based on p22 Protein from African Swine Fever Virus
title Examination of Immunogenic Properties of Recombinant Antigens Based on p22 Protein from African Swine Fever Virus
title_full Examination of Immunogenic Properties of Recombinant Antigens Based on p22 Protein from African Swine Fever Virus
title_fullStr Examination of Immunogenic Properties of Recombinant Antigens Based on p22 Protein from African Swine Fever Virus
title_full_unstemmed Examination of Immunogenic Properties of Recombinant Antigens Based on p22 Protein from African Swine Fever Virus
title_short Examination of Immunogenic Properties of Recombinant Antigens Based on p22 Protein from African Swine Fever Virus
title_sort examination of immunogenic properties of recombinant antigens based on p22 protein from african swine fever virus
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9597933/
https://www.ncbi.nlm.nih.gov/pubmed/36349136
http://dx.doi.org/10.2478/jvetres-2022-0043
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