Screening for protective antigens of Cyprinid herpesvirus 2 and construction of DNA vaccines
Copyright © 2020 Elsevier B.V. All rights reserved..
BACKGROUND: In recent years, crucian carp hematopoietic necrosis caused by Cyprinid herpesvirus 2 (CyHV-2) infection has caused an enormous economic loss to the aquaculture industry.
METHODS: In this study antigenic epitope analysis was performed on the membrane proteins of CyHV-2, and 8 antigen-rich peptide fragments were selected for prokaryotic expression. Then, the immunogenicity of the recombinant proteins was analyzed. On this basis, DNA vaccines were constructed for immunization of hybridized Prussian carps. The protective effect of DNA vaccines against challenge in hybridized Prussian carps was evaluated.
RESULTS: The results showed that all 8 recombinant proteins were successfully expressed. Among the recombinant proteins, ORF16, tORF25, tORF64, and ORF146, gave a positive serum reaction with CyHV-2. Of the four proteins used for the immunization of silver crucian carps, the antibody titer induced by tORF25 was the highest. The DNA vaccine, pEGFP-N1-ORF25, was constructed based on ORF25 and able to induce production of specific antibodies in carps, while up-regulating the expression of MHCⅠ, IL-1β, C3, and TF-A in the kidneys of carps. Moreover, the immunoprotective rate was increased to 70% in hybridized Prussian carps.
CONCLUSION: The results showed that the DNA vaccine constructed based on the ORF25 gene had a greater immune protective effect and can be used as a candidate vaccine for immunoprotection against CyHV-2.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:280 |
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| Enthalten in: |
Journal of virological methods - 280(2020) vom: 15. Juni, Seite 113877 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Yuan, Xuemei [VerfasserIn] |
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| Links: |
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| Themen: |
Antibodies, Viral |
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| Anmerkungen: |
Date Completed 24.05.2021 Date Revised 24.05.2021 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.jviromet.2020.113877 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM309180511 |
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| 100 | 1 | |a Yuan, Xuemei |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Screening for protective antigens of Cyprinid herpesvirus 2 and construction of DNA vaccines |
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| 500 | |a Date Revised 24.05.2021 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2020 Elsevier B.V. All rights reserved. | ||
| 520 | |a BACKGROUND: In recent years, crucian carp hematopoietic necrosis caused by Cyprinid herpesvirus 2 (CyHV-2) infection has caused an enormous economic loss to the aquaculture industry | ||
| 520 | |a METHODS: In this study antigenic epitope analysis was performed on the membrane proteins of CyHV-2, and 8 antigen-rich peptide fragments were selected for prokaryotic expression. Then, the immunogenicity of the recombinant proteins was analyzed. On this basis, DNA vaccines were constructed for immunization of hybridized Prussian carps. The protective effect of DNA vaccines against challenge in hybridized Prussian carps was evaluated | ||
| 520 | |a RESULTS: The results showed that all 8 recombinant proteins were successfully expressed. Among the recombinant proteins, ORF16, tORF25, tORF64, and ORF146, gave a positive serum reaction with CyHV-2. Of the four proteins used for the immunization of silver crucian carps, the antibody titer induced by tORF25 was the highest. The DNA vaccine, pEGFP-N1-ORF25, was constructed based on ORF25 and able to induce production of specific antibodies in carps, while up-regulating the expression of MHCⅠ, IL-1β, C3, and TF-A in the kidneys of carps. Moreover, the immunoprotective rate was increased to 70% in hybridized Prussian carps | ||
| 520 | |a CONCLUSION: The results showed that the DNA vaccine constructed based on the ORF25 gene had a greater immune protective effect and can be used as a candidate vaccine for immunoprotection against CyHV-2 | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Cyprinid herpesvirus 2(CyHV-2) | |
| 650 | 4 | |a DNA vaccine | |
| 650 | 4 | |a antigenic epitope | |
| 650 | 4 | |a immune effect | |
| 650 | 7 | |a Antibodies, Viral |2 NLM | |
| 650 | 7 | |a Antigens, Viral |2 NLM | |
| 650 | 7 | |a Cytokines |2 NLM | |
| 650 | 7 | |a Recombinant Proteins |2 NLM | |
| 650 | 7 | |a Vaccines, DNA |2 NLM | |
| 650 | 7 | |a Viral Proteins |2 NLM | |
| 650 | 7 | |a Viral Vaccines |2 NLM | |
| 700 | 1 | |a Shen, Jinyu |e verfasserin |4 aut | |
| 700 | 1 | |a Pan, Xiaoyi |e verfasserin |4 aut | |
| 700 | 1 | |a Yao, Jiayun |e verfasserin |4 aut | |
| 700 | 1 | |a Lyu, Sunjian |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Li |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Haiqing |e verfasserin |4 aut | |
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