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Chen B, Yang Y, Wang Z, Dai X, Cao Y, Zhang M, Zhang D, Ni X, Zeng Y, Pan K. Surface Display of Duck Hepatitis A Virus Type 1 VP1 Protein on Bacillus subtilis Spores Elicits Specific Systemic and Mucosal Immune Responses on Mice. Probiotics Antimicrob Proteins 2024:10.1007/s12602-024-10323-2. [PMID: 39002060 DOI: 10.1007/s12602-024-10323-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/08/2024] [Indexed: 07/15/2024]
Abstract
Duck viral hepatitis, primarily caused by duck hepatitis A virus type 1 (DHAV-1), poses a significant threat to the global duck industry. Bacillus subtilis is commonly utilized as a safe probiotic in the development of mucosal vaccines. In this study, a recombinant strain of B. subtilis, designated as B. subtilis RV, was constructed to display the DHAV-1 capsid protein VP1 on its spore surface using the outer coat protein B as an anchoring agent. The immunogenicity of this recombinant strain was evaluated in a mouse model through mixed feeding immunization. The results indicated that B. subtilis RV could elicit specific systemic and mucosal immune responses in mice, as evidenced by the high levels of serum IgG, intestinal secretory IgA, and potent virus-neutralizing antibodies produced. Furthermore, the recombinant strain significantly upregulated the expression levels of IL-2, IL-6, IL-10, TNF-α, and IFN-γ in the intestinal mucosa. Thus, the recombinant strain maintained the balance of the Th1/Th2 immune response and demonstrated an excellent mucosal immune adjuvant function. In summary, this study suggests that B. subtilis RV can be a novel alternative for effectively controlling DHAV-1 infection as a vaccine-based feed additive.
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Affiliation(s)
- Bin Chen
- College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Yang Yang
- College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Zhenhua Wang
- College of Animal Husbandry and Veterinary, Chengdu Agricultural College, Chengdu, 611130, China
| | - Xixi Dai
- College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, Wenjiang District, Chengdu, 611130, China
- Chongqing Three Gorges Vocational College, Chongqing, 404155, China
| | - Yuheng Cao
- College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Mengwei Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Dongmei Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Xueqin Ni
- College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Yan Zeng
- College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, Wenjiang District, Chengdu, 611130, China.
| | - Kangcheng Pan
- College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, Wenjiang District, Chengdu, 611130, China.
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Wang J, Yan H, Bei L, Jiang S, Zhang R. 2A2 protein of DHAV-1 induces duck embryo fibroblasts gasdermin E-mediated pyroptosis. Vet Microbiol 2024; 290:109987. [PMID: 38246107 DOI: 10.1016/j.vetmic.2024.109987] [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: 10/12/2023] [Revised: 12/31/2023] [Accepted: 01/06/2024] [Indexed: 01/23/2024]
Abstract
The duck hepatitis A virus type 1 (DHAV-1) causes rapid death in ducklings by triggering a severe cytokine storm. Pyroptosis is an inflammatory form of programmed cell death that is directly related to an increase in pro-inflammatory cytokine levels. Only a few studies have explored the mechanisms underlying pyroptosis in virus-infected avian cells. In this study, we established an avian infection model in vitro by infecting duck embryo fibroblasts (DEFs) with the virulent DHAV-1 LY0801 strain. DHAV-1 infection induced pyroptosis in the DEFs by activating gasdermin E (GSDME) protein via caspase-3-mediated cleavage. The genes encoding the different structural and non-structural DHAV-1 proteins were cloned into eukaryotic expression plasmids, and the 2A2 protein was identified as the key protein involved in pyroptosis. The HPLC-tandem mass spectrometry (HPLC-MS/MS) and co-immunoprecipitation (Co-IP) analysis established that DHAV-1 2A2 directly interacted with the mitochondrial anti-viral signaling protein (MAVS) both intracellularly and in vitro. Furthermore, we got the results that N-terminal 1-130 aa of 2A2 was involved in the interaction with MAVS and the C-terminal TM domain of MAVS is necessary for the interaction with 2A2 by Co-IP analysis. To our knowledge, this is the first study to reveal that DHAV-1 protein interacts with host proteins to induce pyroptosis. Our findings provide new insights into the molecular pathogenesis of DHAV-1 infection, and a scientific basis for the prevention and treatment of duck viral hepatitis.
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Affiliation(s)
- Jingyu Wang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an 271018, China
| | - Hui Yan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an 271018, China
| | - Lei Bei
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an 271018, China
| | - Shijin Jiang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an 271018, China.
| | - Ruihua Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an 271018, China.
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Wen Y, Kong J, Shen Y, He J, Shao G, Feng K, Xie Q, Zhang X. Construction and immune evaluation of the recombinant duck adenovirus type 3 delivering capsid protein VP1 of the type 1 duck hepatitis virus. Poult Sci 2023; 102:103117. [PMID: 37852056 PMCID: PMC10591007 DOI: 10.1016/j.psj.2023.103117] [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: 06/05/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 10/20/2023] Open
Abstract
Adenovirus serves as an excellent viral vector and is employed in vector vaccine research. Duck hepatitis A virus type 1 (DHAV1) and duck adenovirus type 3 (DAdV3) cause significant economic losses in the Chinese duck industry. In this study, we found an excellent exogenous gene insertion site in DAdV3 genome of CH-GD-12-2014 strain, within 3 intergenic regions (IGR). Subsequently, we generated a recombinant duck adenovirus named rDAdV3-VP1-188, which exhibits excellent replication characteristics and immunogenicity of DAdV3 and DHAV1. Animal experiments showed that rDAdV3-VP1-188 can provide 100% protection against the DAdV3 and 80% protection against DHAV1. These results showed that rDAdV3-VP1-188 could induce protection against DAdV3 and DHAV1 in ducks, thus indicating the feasibility of DAdV3 as a vector for the development of avian vector vaccines. These insights contribute to the further development of DAdV3 vectors and other adenovirus vectors.
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Affiliation(s)
- Yongsen Wen
- Heyuan Branch, Guangdong Laboratory of Lingnan Modern Agricultural Science and technology, College of Animal Science and Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Guangdong AiHealth Biotechnology Co., Ltd., Qingyuan 511899, PR China
| | - Jie Kong
- Heyuan Branch, Guangdong Laboratory of Lingnan Modern Agricultural Science and technology, College of Animal Science and Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou 510642, Guangdong, PR China; Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Yong Shen
- Heyuan Branch, Guangdong Laboratory of Lingnan Modern Agricultural Science and technology, College of Animal Science and Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou 510642, Guangdong, PR China; Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Jiahui He
- Heyuan Branch, Guangdong Laboratory of Lingnan Modern Agricultural Science and technology, College of Animal Science and Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou 510642, Guangdong, PR China; Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Guanming Shao
- Heyuan Branch, Guangdong Laboratory of Lingnan Modern Agricultural Science and technology, College of Animal Science and Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou 510642, Guangdong, PR China; Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Keyu Feng
- Heyuan Branch, Guangdong Laboratory of Lingnan Modern Agricultural Science and technology, College of Animal Science and Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou 510642, Guangdong, PR China; Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Qingmei Xie
- Heyuan Branch, Guangdong Laboratory of Lingnan Modern Agricultural Science and technology, College of Animal Science and Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou 510642, Guangdong, PR China; Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Xinheng Zhang
- Heyuan Branch, Guangdong Laboratory of Lingnan Modern Agricultural Science and technology, College of Animal Science and Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou 510642, Guangdong, PR China; Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China.
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Xu G, Yan H, Zhu Y, Xie Z, Zhang R, Jiang S. Duck hepatitis A virus type 1 transmission by exosomes establishes a productive infection in vivo and in vitro. Vet Microbiol 2023; 277:109621. [PMID: 36525908 DOI: 10.1016/j.vetmic.2022.109621] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 11/11/2022] [Accepted: 12/04/2022] [Indexed: 12/12/2022]
Abstract
Duck hepatitis A virus type 1 (DHAV-1) infection causes an acute and highly fatal disease in young ducklings. Exosomes are nano-sized small extracellular vesicles secreted by various cells, which participate in intercellular communication and play a key role in the physiological and pathological processes. However, the role of exosomes in DHAV-1 transmission remains unknown. In this study, through RT-PCR, WB analysis and TEM observation, the complete DHAV-1 genomic RNA, partial viral proteins, and virions were respectively identified in the exosomes derived from DHAV-1-infected duck embryo fibroblasts (DEFs). The productive DHAV-1 infection was transmitted by exosomes in DEFs, duck embryos, and ducklings, and high titers of neutralizing antibodies completely blocked DHAV-1 infection but did not significantly neutralize exosome-mediated DHAV-1 infection. To the best of our knowledge, this is the first report that exosome-mediated DHAV-1 infection was resistant to antibody neutralization in vivo and in vitro, which might be an immune evasion mechanism of DHAV-1.
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Affiliation(s)
- Guige Xu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 201718, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian 271018, China
| | - Hui Yan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 201718, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian 271018, China
| | - Yanli Zhu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 201718, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian 271018, China
| | - Zhijing Xie
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 201718, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian 271018, China
| | - Ruihua Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 201718, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian 271018, China.
| | - Shijin Jiang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 201718, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian 271018, China.
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5
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Zhang X, Zhang R, Wang J, Sui N, Xu G, Yan H, Zhu Y, Xie Z, Jiang S. Construction of Recombinant Lactococcus lactis Strain Expressing VP1 Fusion Protein of Duck Hepatitis A Virus Type 1 and Evaluation of Its Immune Effect. Vaccines (Basel) 2021; 9:vaccines9121479. [PMID: 34960225 PMCID: PMC8709260 DOI: 10.3390/vaccines9121479] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/19/2021] [Accepted: 12/10/2021] [Indexed: 11/26/2022] Open
Abstract
With the continuous development of duck farming and the increasing breeding density, the incidence of duck hepatitis A virus type 1 (DHAV-1) has been on the rise, seriously endangering the development of duck farming. To reduce the use of antibiotics in duck breeding, susceptibility risks and mortality, and avoid virulence recovery and immune failure risk, this study aims to develop a new type of mucosal immune probiotics and make full use of molecular biology techniques, on the level of genetic engineering, to modify Lactococcus lactis (L. lactis). In this study, a secretory recombinant L. lactis named MG1363-VP1 with an enhanced Green Fluorescent Protein (eGFP) and translation enhancer T7g10L was constructed, which could express the VP1-eGFP fusion protein of DHAV-1. The animal experiment in ducklings was performed to detect the immune response and protection effect of oral microecologics by recombinant L. lactis. The results showed that oral L. lactis MG1363-VP1 significantly induced the body’s humoral immune system and mucosal immune system to produce specific anti-VP1 IgG antibodies and mucosal secretory immunoglobulin A (sIgA) for DHAV-1 in ducklings, and cytokines including interleukin-2 (IL-2), interleukin-4 (IL-4), interleukin-10 (IL-10), and interferon gamma (IFN-γ). The mortality rate was monitored simultaneously by the natural infestation in the process of production and breeding; notably, the ducklings vaccinated with L. lactis MG1363-VP1 were effectively protected against the nature infection of DHAV-1. The recombinant L. lactis MG1363-VP1 constructed in this study provides a new means of preventing and controlling DHAV-1 infection in the future.
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Affiliation(s)
- Xiaoting Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Key Laboratory of Animal Microecological Preparations, Taian 271000, China
| | - Ruihua Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Jingyu Wang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Nana Sui
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Guige Xu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Hui Yan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Yanli Zhu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Zhijing Xie
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Shijin Jiang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
- Correspondence: ; Tel.: +86-538-8245799
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Development of an indirect ELISA method based on the VP4 protein for detection antibody against duck hepatitis A virus type 1. J Virol Methods 2021; 300:114393. [PMID: 34861317 DOI: 10.1016/j.jviromet.2021.114393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 09/24/2021] [Accepted: 11/29/2021] [Indexed: 11/24/2022]
Abstract
In Picornavirus, the VP4 gene is located inside the viral capsid, but the antibodies it produces have neutralizing activity. At the same time, we know that the VP4 gene is relatively conserved among the four structural proteins, which makes the usage VP4 protein-based antigen potentially meaningful. Therefore, we used purified duck hepatitis A virus type 1 (DHVA-1) recombinant VP4 protein as the coating antigen to establish an indirect method. The optimal antigen, serum and enzyme-labeled antibody dilutions were 1:400 (3.375 μg/mL), 1:80 and 1:1600, respectively. The optimal blocking buffer was 1% skimmed milk powder. The cutoff value was determined to be 0.203, and the analytical sensitivity was 1:1600. The established ELISA method has good specificity, repeatability and sensitivity. It has a high coincidence rate of 70.8 % with the DHVA-1 as the coating antigen. So, it can be used for the detection of DHAV-1 serum antibodies.
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Ming K, Su L, Zhang B, He M, Qiu T, Wang J, Meng J, Liu J, Wang D, Wu Y. Comparison of viral distribution in duck hepatitis A virus-infected duckling models established by two different methods. Res Vet Sci 2021; 141:156-163. [PMID: 34749100 DOI: 10.1016/j.rvsc.2021.10.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 09/14/2021] [Accepted: 10/28/2021] [Indexed: 11/25/2022]
Abstract
Duck hepatitis A virus type 1 (DHAV-1) infection is the main cause of duck viral hepatitis, but the replication process and distribution of DHAV-1 in vivo are still poorly understood. In this study, six-day-old ducklings were infected by two different methods: by intramuscular injection to establish DHAV-1 infection animal models and by the combined administration of virus solution orally, through nasal inhalation, through inoculation of the eye, and through intrarectal contact to simulate natural infection. Tissues were collected at different time points and quantitative real-time polymerase chain reaction (qPCR) was employed to analyze the gene expression levels of DHAV-1 in different tissues. The results showed that the viral gene levels responded to the different challenge methods. Viral gene expression levels in all tissues in the intramuscular injection group were lower than those in the group that simulated natural infection. In both groups, the liver was the primary tissue that responsible for the replication of DHAV-1 genes, as virus gene level peaked at 4 h post infection (hpi). In addition, the respiratory and digestive tracts were important regions for DHAV-1 infection as high viral gene levels were detected at early (8 hpi) and late (96 hpi) stages of infection. This research utilized a novel infection method to simulate natural infection and analyzed the DHAV-1 distribution in different tissues. The findings can provide guidance for making prevention and control measures.
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Affiliation(s)
- Ke Ming
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Linglin Su
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Baokang Zhang
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Miao He
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Tianxin Qiu
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Jinli Wang
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Jinwu Meng
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Jiaguo Liu
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Deyun Wang
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Yi Wu
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
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8
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Hassan TIR, Eid AAM, Ghanem IAI, Shahin AM, Adael SAA, Mohamed FF. First Report of Duck Hepatitis A Virus 3 from Duckling Flocks of Egypt. Avian Dis 2021; 64:269-276. [PMID: 33205161 DOI: 10.1637/aviandiseases-d-19-00158] [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: 09/09/2019] [Accepted: 02/26/2020] [Indexed: 11/05/2022]
Abstract
Duck hepatitis A viruses (DHAV-1, DHAV-2, and DHAV-3) are the predominant causes of duck virus hepatitis (DVH), a disease of ducklings that leads to massive morbidities, mortalities, and economic losses. As a duck-producing country, Egypt suffered lately from several attacks of DVH, despite the regular vaccination of birds. Between Spring 2016 and Summer 2018, 54 duckling flocks in the Sharkia province of Egypt were tested using the reverse-transcription PCR (RT-PCR) based on the DHAV-3D targeting primers. Of them, 27.8% (15/54) were positive. Upon retesting of positive samples using RT-PCR and duck hepatitis A virus (DHAV)-3 VP1-based primers, 33.3% (5/15) contained DHAV-3 RNA. For further analysis at the molecular level, the VP1 and the 3D genes were sequenced using the same primer sets used earlier. The phylogenetic trees confirmed that study sequences belonged to DHAV-3. However, they were displayed as a separate cluster following a geographically dependent distribution. They were also completely unrelated to the Egyptian DHAV-1-based vaccine. This was further confirmed by low nucleotide and amino acid identities in relation to this vaccine. In addition, the VP1 and 3D genes had the same phylogenetic topography. The study VP1 sequences had three unique amino acid substitutions (L59, V208 only in one strain, and C219). As far as we know, this is the first report on DHAV-3 outside Asia, particularly in Egypt. Accordingly, the vaccination strategy against DHAV should be quickly updated to avoid further dissemination of the virus. The epidemiology, pathogenicity, and evolution of DHAV-3 should be carefully monitored in Egypt.
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Affiliation(s)
- Tamer I R Hassan
- Department of Poultry Diseases, Animal Health Research Institute (Zagazig Branch), Zagazig, Sharkia, 44511 Egypt
| | - Amal A M Eid
- Department of Avian and Rabbit Medicine, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Sharkia, 44511 Egypt
| | - Ibrahim A I Ghanem
- Department of Avian and Rabbit Medicine, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Sharkia, 44511 Egypt
| | - Abeer M Shahin
- Department of Avian and Rabbit Medicine, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Sharkia, 44511 Egypt
| | - Samy A A Adael
- Department of Poultry Diseases, Animal Health Research Institute (Zagazig Branch), Zagazig, Sharkia, 44511 Egypt
| | - Fakry F Mohamed
- Department of Virology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Sharkia, 44511 Egypt
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9
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Zang Y, Tian Y, Li Y, Xue R, Hu L, Zhang D, Sun S, Wang G, Chen J, Lan Z, Lin S, Jiang S. Recombinant Lactobacillus acidophilus expressing S 1 and S 2 domains of porcine epidemic diarrhea virus could improve the humoral and mucosal immune levels in mice and sows inoculated orally. Vet Microbiol 2020; 248:108827. [PMID: 32891955 PMCID: PMC7428733 DOI: 10.1016/j.vetmic.2020.108827] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 08/11/2020] [Indexed: 01/02/2023]
Abstract
The recombinant L. acidophilus expressing S1 and S2 domains of PEDV were generated. The oral vaccines for PED were based on a swine-origin L. acidophilus. The oral L. acidophilus vaccines induced humoral and mucosal immunity in mice. The L. acidophilus-S1 vaccine induced humoral and mucosal immunity in sows.
Porcine epidemic diarrhea (PED) is a highly contagious intestinal infectious disease caused by porcine epidemic diarrhea virus (PEDV), which is characterized by a high mortality rate in piglets. Since 2012, a remarkable growth in PED outbreaks occurred in many pig farms in China, landing a heavy blow on the pig industry. In order to develop a new effective vaccine for the current PEDV, oral vaccines were generated by transferring eukaryotic expression recombinant plasmids carrying the S1 and S2 (antigenic sites of the S protein) epitopes of PEDV into a swine-origin Lactobacillus acidophilus (L. acidophilus). After oral immunization of the BALB/c mice, higher levels of anti-PEDV specific IgG and SIgA antibodies and cellular immune responses were detected in mice orally administered with the recombinant L. acidophilus-S1 compared to the L. acidophilus-S2. Furthermore, L. acidophilus-S1 was used to inoculate the pregnant sows orally and the results showed that the recombinant L. acidophilus-S1 could elicit a specific systemic and mucosal immune response. In summary, our study demonstrated that oral immunization with L. acidophilus-S1 could improve the humoral and mucosal immune levels in sows and would be a promising candidate vaccine against PEDV infection in piglets.
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Affiliation(s)
- Yue Zang
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China; College of Veterinary Medicine, Shandong Agricultural University, Shandong, Taian, 271018, China
| | - Ye Tian
- College of Veterinary Medicine, China Agricultural University, Beijing, 100094, China
| | - Yungang Li
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Ruixue Xue
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Liping Hu
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Dong Zhang
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Shengfu Sun
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Guisheng Wang
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Jing Chen
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Zouran Lan
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Shaoli Lin
- College of Veterinary Medicine, Shandong Agricultural University, Shandong, Taian, 271018, China
| | - Shijin Jiang
- College of Veterinary Medicine, Shandong Agricultural University, Shandong, Taian, 271018, China.
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10
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Chen Y, Yao F, Ming K, Shi J, Zeng L, Wang D, Wu Y, Hu Y, Liu J. Assessment of the Effect of Baicalin on Duck Virus Hepatitis. Curr Mol Med 2020; 19:376-386. [PMID: 30950349 DOI: 10.2174/1566524019666190405095301] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 03/22/2019] [Accepted: 03/27/2019] [Indexed: 01/08/2023]
Abstract
BACKGROUND Duck virus hepatitis (DVH) caused by duck hepatitis A virus type 1 (DHAV-1) is a malignant disease in ducklings, causing economic losses in the duck industry. However, there is still no antiviral drug against DHAV-1 in the clinic. OBJECTIVE Our aim is to investigate the anti-DHAV-1 effect of baicalin, which is a flavonoid derived from the Chinese medicinal herb huangqin (Scutellaria baicalensis Georgi). METHODS Here, we first detected its anti-DHAV-1 ability in vitro and in vivo. At the same time, the inhibition of baicalin on DHAV-1 reproduction was determined. Finally, we tested and verified the anti-oxidative and immuno-enhancing roles of baicalin on its curative effect on DVH. RESULTS Baicalin possessed anti-DHAV-1 effect. It improved the cytoactive of DEH which was infected by DHAV-1 as well as reduced the DHAV-1 reproduction in DEH. Under baicalin treatment, mortality of ducklings infected by DHAV-1 decreased, additionally the DHAV-1 level and liver injury in such ducklings were significantly reduced or alleviated. The in vitro mechanism study indicated baicalin inhibited DHAV-1 reproduction via interfering the viral replication and release. Furthermore, the in vivo mechanism study manifested both the anti-oxidative and immuno-enhancing abilities of baicalin, which played crucial roles in its curative effect on DVH. CONCLUSION This study may provide a scientific basis for developing baicalin as one or a part of the anti-DHAV-1 drugs.
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Affiliation(s)
- Yun Chen
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China.,College of Animal Science and Technology, College of Tropical Agriculture and Forestry, Hainan University, Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Animal Genetic Engineering Key Lab of Haikou, Haikou 570228, China
| | - Fangke Yao
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Ke Ming
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Jintong Shi
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Ling Zeng
- Animal husbandry and Veterinary Bureau of Yuhang District of Hangzhou, Hangzhou 311100, China
| | - Deyun Wang
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Yi Wu
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Yuanliang Hu
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiaguo Liu
- Institute of Traditional Chinese Veterinary Medicine and MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
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11
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Zhang R, Yang Y, Lan J, Xie Z, Zhang X, Jiang S. Evidence of possible vertical transmission of duck hepatitis A virus type 1 in ducks. Transbound Emerg Dis 2020; 68:267-275. [PMID: 32598568 DOI: 10.1111/tbed.13708] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 12/12/2022]
Abstract
Duck hepatitis A virus (DHAV) causes a highly contagious and acute disease in ducklings younger than 3 weeks of age and spreads rapidly by horizontal transmission to all susceptible ducklings in the flock. To date, there is no evidence of vertical transmission of DHAV-1. In a previous study, we identified a novel DHAV type 1 (DHAV-1) isolate that could infect adult ducks and induce laying drop. In this study, 30 non-embryonated duck eggs and 60 17-day-old embryos were collected from three breeding duck flocks with egg drop syndrome caused by DHAV-1 in China, and 30 17-day-old embryos were randomly selected from the 60 embryos and allowed to hatch. DHAV-1 RNA was detected by RT-PCR in 10 of 30 non-embryonated eggs, 9 of 30 17-day-old embryos, 5 of 7 dead embryos and 5 of 23 newly hatched ducklings. Overall, 29 of 90 (32.2%) eggs and embryos were positive for DHAV-1. Three DHAV-1 strains were isolated from the dead duck embryos of the three breeding duck flocks, respectively. Pathogenicity studies showed that the three DHAV-1 isolates had median embryo lethal doses but were highly pathogenic to healthy ducklings. Compared with the DHAV reference strains, there were two specific amino acid mutation sites (F169 and S220 ) in VP1 of the three isolates. To the best of our knowledge, this is the first report that DHAV-1 is isolated from duck embryos. The findings provide evidence of possible vertical transmission of DHAV-1 from breeding ducks to ducklings.
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Affiliation(s)
- Ruihua Zhang
- College of Life Science, Shandong Agricultural University, Taian, Shandong, China.,Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, China
| | - Yupeng Yang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, China
| | - Jingjing Lan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, China
| | - Zhijing Xie
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, China
| | - Xiansheng Zhang
- College of Life Science, Shandong Agricultural University, Taian, Shandong, China
| | - Shijin Jiang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, China
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12
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Lian C, Zhang R, Lan J, Yang Y, Li H, Sui N, Xie Z, Jiang S. Identification of a common conserved neutralizing linear B-cell epitope in the VP3 protein of waterfowl parvoviruses. Avian Pathol 2020; 49:325-334. [PMID: 32208867 DOI: 10.1080/03079457.2020.1746743] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Waterfowl parvoviruses (WPVs) including goose parvovirus (GPV), novel GPV-related virus (NGPV) and Muscovy duck parvovirus (MDPV) cause significant economic losses and epizootic threat to the waterfowl industries, and little is known about the B-cell epitopes of WPVs. In this study, a monoclonal antibody (mAb) 5B5 against the VP3 protein of NGPV was used to identify the possible epitope in the three kinds of WPVs. The mAb 5B5 had neutralizing activities to the three viruses, and reacted with the conserved linear B-cell epitopes of 438LHNPPP443 in VP3 protein of GPV, NGPV and MDPV. To the authors' best knowledge, this is the first report on identification of the common conserved neutralizing linear B-cell epitope on VP3 protein of three different WPVs, which would facilitate the development of a novel immunodiagnostic assay for rapid detection of WPV infection.
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Affiliation(s)
- Caiyu Lian
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, People's Republic of China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, People's Republic of China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, People's Republic of China
| | - Ruihua Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, People's Republic of China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, People's Republic of China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, People's Republic of China
| | - Jingjing Lan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, People's Republic of China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, People's Republic of China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, People's Republic of China
| | - Yupeng Yang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, People's Republic of China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, People's Republic of China
| | - Hanqing Li
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, People's Republic of China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, People's Republic of China
| | - Nana Sui
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, People's Republic of China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, People's Republic of China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, People's Republic of China
| | - Zhijing Xie
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, People's Republic of China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, People's Republic of China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, People's Republic of China
| | - Shijin Jiang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, People's Republic of China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, People's Republic of China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, People's Republic of China
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A Novel Peptide Isolated from a Phage Display Peptide Library Modeling Antigenic Epitope of DHAV-1 and DHAV-3. Vaccines (Basel) 2020; 8:vaccines8010121. [PMID: 32150877 PMCID: PMC7157547 DOI: 10.3390/vaccines8010121] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 03/04/2020] [Indexed: 12/19/2022] Open
Abstract
Duck hepatitis A virus (DHAV), the major pathogen of duck virus hepatitis (DVH), causes severe diseases that threaten the duck industry worldwide. The VP1 protein, a major structural protein of DHAV, is able to induce neutralizing antibody in ducks. The purpose of this study was to identify the antigenic mimotope of DHAV by phage display technology. A monoclonal antibody (mAb) 4E6 against DHAV-1 and DHAV-3 was prepared, and a phage library prepared with the PhD-12 Phage Display Peptide Library Kit was screened with the mAb. A novel peptide, 1GLTWKLPPSM10 was identified with high affinity to the mAb and could specifically block mAb 4E6 from binding DHAV-1 and DHAV-3. Animal tests confirmed that the immunization of ducklings with the mimotope could inhibit the virus proliferation and protect the ducklings from DVH. In summary, the neutralizing conformational mimotope 1GLTWKLPPSM10 might be a promising vaccine candidate for the prevention of DHAV infection.
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14
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Lan J, Zhang R, Yu H, Wang J, Xue W, Chen J, Lin S, Wang Y, Xie Z, Jiang S. Quantitative Proteomic Analysis Uncovers the Mediation of Endoplasmic Reticulum Stress-Induced Autophagy in DHAV-1-Infected DEF Cells. Int J Mol Sci 2019; 20:ijms20246160. [PMID: 31817666 PMCID: PMC6940786 DOI: 10.3390/ijms20246160] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/03/2019] [Accepted: 12/04/2019] [Indexed: 12/11/2022] Open
Abstract
Autophagy is a tightly regulated catabolic process and is activated in cells in response to stress signals. Despite extensive study, the interplay between duck hepatitis A virus type 1 (DHAV-1) and the autophagy of host cells is not clear. In this study, we applied proteomics analysis to investigate the interaction mechanism between DHAV-1 and duck embryo fibroblast (DEF) cells. In total, 507 differentially expressed proteins (DEPs) were identified, with 171 upregulated proteins and 336 downregulated proteins. The protein expression level of heat shock proteins (Hsps) and their response to stimulus proteins and zinc finger proteins (ZFPs) were significantly increased while the same aspects of ribosome proteins declined. Bioinformatics analysis indicated that DEPs were mainly involved in the “response to stimulus”, the “defense response to virus”, and the “phagosome pathway”. Furthermore, Western blot results showed that the conversion of microtubule-associated protein 1 light chain 3-I (LC3-I) to the lipidation form of LC3-II increased, and the conversion rate decreased when DEF cells were processed with 4-phenylbutyrate (4-PBA). These findings indicated that DHAV-1 infection could cause endoplasmic reticulum (ER) stress-induced autophagy in DEF cells, and that ER stress was an important regulatory factor in the activation of autophagy. Our data provide a new clue regarding the host cell response to DHAV-1 and identify proteins involved in the DHAV-1 infection process or the ER stress-induced autophagy process.
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Affiliation(s)
- Jingjing Lan
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (H.Y.); (J.W.); (W.X.); (J.C.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Ruihua Zhang
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (H.Y.); (J.W.); (W.X.); (J.C.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Honglei Yu
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (H.Y.); (J.W.); (W.X.); (J.C.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Jingyu Wang
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (H.Y.); (J.W.); (W.X.); (J.C.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Wenxiang Xue
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (H.Y.); (J.W.); (W.X.); (J.C.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Junhao Chen
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (H.Y.); (J.W.); (W.X.); (J.C.); (Z.X.)
- College of Public Health and Management, Weifang Medical University, Weifang 261042, China
| | - Shaoli Lin
- Molecular Virology Laboratory, VA-MD College of Veterinary Medicine and Maryland Pathogen Research Institute, University of Maryland, College Park, MD 20742, USA;
| | - Yu Wang
- Department of Basic Medical Sciences, Taishan Medical College, Taian 271000, China;
| | - Zhijing Xie
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (H.Y.); (J.W.); (W.X.); (J.C.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Shijin Jiang
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (H.Y.); (J.W.); (W.X.); (J.C.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
- Correspondence: ; Tel.: +86-538-8245799
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15
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Lan J, Zhang R, Li P, Chen J, Xie Z, Jiang S. Identification of a Type-Specific Epitope in the ORF2 Protein of Duck Astrovirus Type 1. Animals (Basel) 2019; 9:ani9121069. [PMID: 31810309 PMCID: PMC6940979 DOI: 10.3390/ani9121069] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 11/23/2019] [Accepted: 11/26/2019] [Indexed: 02/03/2023] Open
Abstract
Simple Summary Duck astrovirus type 1 (DAstV-1) infection constitutes a cause of viral hepatitis in ducklings and little is known about the B-cell epitope of DAstV-1. In this study, using a monoclonal antibody (mAb) 3D2 against ORF2 protein of DAstV-1, a highly conserved linear B-cell epitope of 454 STTESA459 in DAstV-1 ORF2 was identified. The mAb 3D2 showed no neutralizing activity to DAstV-1 and had no cross-reactivity with other DAstV serotypes. Abstract Duck astrovirus type 1 (DAstV-1) infection constitutes a cause of viral hepatitis in ducklings and little is known about the B-cell epitope of DAstV-1. In this study, a monoclonal antibody (mAb) 3D2 against open reading frame 2 (ORF2) protein of DAstV-1 was used to identify the possible epitope in the four serotypes of DAstV. The mAb 3D2 showed no neutralization activity to DAstV-1, and reacted with the conserved linear B-cell epitopes of 454STTESA459 in DAstV-1 ORF2 protein. Sequence analysis, dot blot assay, and cross-reactivity test indicated that the epitope peptide was highly conserved in DAstV-1 sequence and mAb 3D2 had no cross-reactivity with other DAstV serotypes. To the best of our knowledge, this is the first report about identification of the specific conserved linear B-cell epitope of DAstV-1, which will facilitate the serologic diagnosis of DAstV-1 infection.
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Affiliation(s)
- Jingjing Lan
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (P.L.); (J.C.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Ruihua Zhang
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (P.L.); (J.C.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Pengfei Li
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (P.L.); (J.C.); (Z.X.)
| | - Junhao Chen
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (P.L.); (J.C.); (Z.X.)
- College of Public Health and Management, Weifang Medical University, Weifang 261042, China
| | - Zhijing Xie
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (P.L.); (J.C.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Shijin Jiang
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, China; (J.L.); (R.Z.); (P.L.); (J.C.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
- Correspondence: ; Tel.: +86-538-8245799
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16
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Identification and Application of Epitopes in EtMIC1 of Eimeria tenella Recognized by the Monoclonal Antibodies 1-A1 and 1-H2. Infect Immun 2019; 87:IAI.00596-19. [PMID: 31427452 DOI: 10.1128/iai.00596-19] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 08/13/2019] [Indexed: 12/17/2022] Open
Abstract
Eimeria tenella microneme-1 protein (EtMIC1) has been proposed to be a transmembrane protein, but this characteristic has not yet been confirmed experimentally. Furthermore, despite EtMIC1 being an important candidate antigen, its key epitope has not been reported. Here, two linear B-cell epitopes of EtMIC1, 91LITFATRSK99 and 698ESLISAGE705, were identified by Western blotting using specific monoclonal antibodies (MAbs) and were named epitope I (located in the I-domain) and epitope CTR (located in the CTR domain), respectively. Sequence comparative analyses of these epitopes among Eimeria species that infect chickens showed that epitope I differs greatly across species, whereas epitope CTR is relatively conserved. Point mutation assay results indicate that all the amino acid residues of the epitopes recognized by MAb 1-A1 or 1-H2 are key amino acids involved in recognition. Comparative analyses of indirect immunofluorescence assay (IFA) results for MAbs 1-A1 and 1-H2 under both nonpermeabilization and permeabilization conditions indicate that epitope I is located on the outer side of the sporozoite surface membrane whereas epitope CTR is located on the inner side, together providing experimental evidence that EtMIC1 is a transmembrane protein. IFA also labeled the EtMIC1 protein on the parasitophorous vacuole membrane and on the surface of schizonts, which suggests that the EtMIC1 protein may play an important role in parasitophorous vacuole formation and E. tenella development. Immunoprotective efficacy experiments revealed that epitope I has good immunogenicity, as evidenced by its induction of high serum antibody levels, blood lymphocyte proliferation, and CD4+ blood lymphocyte percentage.
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Chen J, Zhang R, Lan J, Lin S, Li P, Gao J, Wang Y, Xie ZJ, Li FC, Jiang SJ. IGF2BP1 Significantly Enhances Translation Efficiency of Duck Hepatitis A Virus Type 1 without Affecting Viral Replication. Biomolecules 2019; 9:biom9100594. [PMID: 31658691 PMCID: PMC6843311 DOI: 10.3390/biom9100594] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/06/2019] [Accepted: 10/08/2019] [Indexed: 01/01/2023] Open
Abstract
As a disease characterized by severe liver necrosis and hemorrhage, duck viral hepatitis (DVH) is mainly caused by duck hepatitis A virus (DHAV). The positive-strand RNA genome of DHAV type 1 (DHAV-1) contains an internal ribosome entry site (IRES) element within the 5′ untranslated region (UTR), structured sequence elements within the 3′ UTR, and a poly(A) tail at the 3′ terminus. In this study, we first examined that insulin-like growth factor-2 mRNA-binding protein-1 (IGF2BP1) specifically interacted with the DHAV-1 3′ UTR by RNA pull-down assay. The interaction between IGF2BP1 and DHAV-1 3′ UTR strongly enhanced IRES-mediated translation efficiency but failed to regulate DHAV-1 replication in a duck embryo epithelial (DEE) cell line. The viral propagation of DHAV-1 strongly enhanced IGF2BP1 expression level, and viral protein accumulation was identified as the key point to this increment. Collectively, our data demonstrated the positive role of IGF2BP1 in DHAV-1 viral proteins translation and provided data support for the replication mechanism of DHAV-1.
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Affiliation(s)
- Junhao Chen
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, Shandong, China.
- College of Public Health and Management, Weifang Medical University, Weifang 261042, Shandong, China.
| | - Ruihua Zhang
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, Shandong, China.
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, Shandong, China.
| | - Jingjing Lan
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, Shandong, China.
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, Shandong, China.
| | - Shaoli Lin
- Molecular Virology Laboratory, VA-MD College of Veterinary Medicine and Maryland Pathogen Research Institute, University of Maryland, College Park, MD 20742, USA.
| | - Pengfei Li
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, Shandong, China.
| | - Jiming Gao
- Department of Basic Medical Sciences, Taishan Medical College, Taian 271000, Shandong, China.
| | - Yu Wang
- Department of Basic Medical Sciences, Taishan Medical College, Taian 271000, Shandong, China.
| | - Zhi-Jing Xie
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, Shandong, China.
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, Shandong, China.
| | - Fu-Chang Li
- College of Animal Science and Technology, Shandong Agricultural University, Taian 271000, Shandong, China.
| | - Shi-Jin Jiang
- College of Veterinary Medicine, Shandong Agricultural University, Taian 271000, Shandong, China.
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, Shandong, China.
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18
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Song S, Li P, Zhang R, Chen J, Lan J, Lin S, Guo G, Xie Z, Jiang S. Oral vaccine of recombinant Lactococcus lactis expressing the VP1 protein of duck hepatitis A virus type 3 induces mucosal and systemic immune responses. Vaccine 2019; 37:4364-4369. [PMID: 31227355 DOI: 10.1016/j.vaccine.2019.06.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 06/11/2019] [Accepted: 06/11/2019] [Indexed: 01/27/2023]
Abstract
Duck hepatitis A virus (DHAV) is the major pathogen of duck viral hepatitis, which has caused great economic losses to duck breeding industry. As an effective delivery tool for protein antigens, Lactococcus lactis (L. lactis) has been successfully used to stimulate mucosal and systemic immune response. In this study, a recombinant L. lactis named NZ3900-VP1 was constructed, which could express VP1 protein of DHAV type 3 (DHAV-3) by using a nisin-controlled expression (NICE) system. The animal experiment in both mice and ducklings were performed to detect the immune response and protection effect of oral vaccination by the recombinant L. lactis. The results showed that oral vaccination with L. lactis NZ3900-VP1 significantly induced specific anti-VP1 IgG antibodies and mucosal secretory immunoglobulin A (sIgA) of DHAV-3 in mice and ducklings, and cytokines including interleukin-2 (IL-2), interferon gamma (IFN-γ), interleukin-10 (IL-10) and interleukin-4 (IL-4). Notably, the ducklings vaccinated with L. lactis NZ3900-VP1 were effectively protected when facing natural infestation of DHAV-3, which indicated that the recombinant L. lactis could serve as an effective vaccine to prevent DHAV-3 infection in ducklings.
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Affiliation(s)
- Shasha Song
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian 271018, China
| | - Pengfei Li
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China
| | - Ruihua Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian 271018, China
| | - Junhao Chen
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian 271018, China
| | - Jingjing Lan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian 271018, China
| | - Shaoli Lin
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China
| | - Guanjie Guo
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China
| | - Zhijing Xie
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian 271018, China
| | - Shijin Jiang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian 271018, China.
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19
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Wang AP, Liu L, Gu LL, Guo CM, Wu S, Feng Q, Xia WL, Wu Z, Zhu SY. Protection against duck hepatitis a virus type 1 conferred by a recombinant avian adeno-associated virus. Poult Sci 2019; 98:112-118. [PMID: 30053293 DOI: 10.3382/ps/pey325] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 06/29/2018] [Indexed: 11/20/2022] Open
Abstract
The avian adeno-associated virus (AAAV) has been proved to be an efficient gene transfer vector for human gene therapy and vaccine research. In this experiment, an AAAV-based vaccine was evaluated for the development of a vaccine against duck hepatitis a virus type 1 (DHAV-1). The major capsid VP1 gene was amplified and subcloned into pFBGFP containing the inverted terminal repeats of AAAV, and then the recombinant baculovirus rBac-VP1 was generated. The recombinant AAAV expressing the VP1 protein (rAAAV-VP1) was produced by co-infecting Sf9 cells with rBac-VP1 and the other 2 baculoviruses containing AAAV functional genes and structural genes respectively, and confirmed by electron microscopy, Western blotting and immunofluorescence assays. Quantitative real-time PCR revealed that the titer of rAAAV-VP1 was about 9 × 1012 VG/mL. Immunogenicity was studied in ducklings. One day ducklings were injected intramuscularly once with rAAAV-VP1. Serum from rAAAV-VP1-vaccinated ducklings showed a systemic immune response evidenced by VP1-specific enzyme-linked immunosorbent assay and virus neutralization test. Furthermore, all ducklings inoculated with rAAAV-VP1 were protected against DHAV-1 challenge. The data of quantitative real-time RT-PCR from livers of challenged ducklings also showed that the level of virus copies in rAAAV-VP1 group was significantly lower than that of the PBS group. Collectively, these results demonstrate that the AAAV-based vaccine is a potential vaccine candidate for the control of duck viral hepatitis.
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Affiliation(s)
- A P Wang
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - L Liu
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - L L Gu
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - C M Guo
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - S Wu
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - Q Feng
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - W L Xia
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - Z Wu
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - S Y Zhu
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
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20
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Xue W, Zhao Q, Li P, Zhang R, Lan J, Wang J, Yang X, Xie Z, Jiang S. Identification and characterization of a novel nanobody against duck hepatitis A virus type 1. Virology 2019; 528:101-109. [DOI: 10.1016/j.virol.2018.12.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 10/27/2022]
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21
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Chen JH, Zhang RH, Lin SL, Li PF, Lan JJ, Song SS, Gao JM, Wang Y, Xie ZJ, Li FC, Jiang SJ. The Functional Role of the 3' Untranslated Region and Poly(A) Tail of Duck Hepatitis A Virus Type 1 in Viral Replication and Regulation of IRES-Mediated Translation. Front Microbiol 2018; 9:2250. [PMID: 30319572 PMCID: PMC6167517 DOI: 10.3389/fmicb.2018.02250] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 09/04/2018] [Indexed: 01/04/2023] Open
Abstract
The duck hepatitis A virus type 1 (DHAV-1) is a member of Picornaviridae family, the genome of the virus contains a 5′ untranslated region (5′ UTR), a large open reading frame that encodes a polyprotein precursor and a 3′ UTR followed by a poly(A) tail. The translation initiation of virus proteins depends on the internal ribosome-entry site (IRES) element within the 5′ UTR. So far, little information is known about the role of the 3′ UTR and poly(A) tail during the virus proliferation. In this study, the function of the 3′ UTR and poly(A) tail of DHAV-1 in viral replication and IRES-mediated translation was investigated. The results showed that both 3′ UTR and poly(A) tail are important for maintaining viral genome RNA stability and viral genome replication. During DHAV-1 proliferation, at least 20 adenines were required for the optimal genome replication and the virus replication could be severely impaired when the poly (A) tail was curtailed to 10 adenines. In addition to facilitating viral genome replication, the presence of 3′ UTR and poly(A) tail significantly enhance IRES-mediated translation efficiency. Furthermore, 3′ UTR or poly(A) tail could function as an individual element to enhance the DHAV-1 IRES-mediated translation, during which process, the 3′ UTR exerts a greater initiation efficiency than the poly(A)25 tail.
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Affiliation(s)
- Jun-Hao Chen
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China
| | - Rui-Hua Zhang
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China
| | - Shao-Li Lin
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China
| | - Peng-Fei Li
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China
| | - Jing-Jing Lan
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China
| | - Sha-Sha Song
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China
| | - Ji-Ming Gao
- Department of Basic Medical Sciences, Taishan Medical College, Tai'an, China
| | - Yu Wang
- Department of Basic Medical Sciences, Taishan Medical College, Tai'an, China
| | - Zhi-Jing Xie
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China
| | - Fu-Chang Li
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, China
| | - Shi-Jin Jiang
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China
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22
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Novel duck hepatitis A virus type 1 isolates from adult ducks showing egg drop syndrome. Vet Microbiol 2018; 221:33-37. [PMID: 29981705 DOI: 10.1016/j.vetmic.2018.05.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/29/2018] [Accepted: 05/29/2018] [Indexed: 12/15/2022]
Abstract
Generally, duck hepatitis A virus type 1 (DHAV-1) only infects young ducklings. Since December 2016, severe outbreaks of duck viral infection with egg drop, feed consumption decline, and ovary-oviduct disease have occurred in some laying duck flocks in Shandong Province of China. DHAV-1 isolated from the affected ducks was confirmed as the causative pathogen of the egg drop. Compared with other DHAV-1 strains, the novel isolate has three special amino acid mutation points in the most variable regions at the C-terminus of VP1. The experimental infection in laying ducks indicated that successful immunization with DHAV-1 vaccine could protect laying duck from infection. To the best of our knowledge, this is the first reported incidence of a severe duck disease outbreak involving egg drop syndrome caused by DHAV-1.
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23
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Chen J, Zhang R, Lin S, Li P, Lan J, Xie Z, Wang Y, Jiang S. Construction and characterization of an improved DNA-launched infectious clone of duck hepatitis a virus type 1. Virol J 2017; 14:212. [PMID: 29100535 PMCID: PMC5670519 DOI: 10.1186/s12985-017-0883-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Accepted: 10/30/2017] [Indexed: 11/28/2022] Open
Abstract
Background DNA-launched infectious system is a useful tool with high rescue efficiency that allows the introduction of mutations in specific positions to investigate the function of an individual viral element. Rescued virus particles could be harvested by directly transfecting the DNA-launched recombinant plasmid to the host cells, which will reduce labor and experimental cost by skipping the in vitro transcription assay. Methods A total of four overlapping fragments covering the entire viral genome were amplified and then were assembled into a transformation vector based on pIRES2-EGFP to establish the DNA-launched infectious system of duck hepatitis A virus type 1 (DHAV-1), named pIR-DHAV-1. Reverse transcription polymerase chain reaction (RT-PCR) detection, quantitative real-time polymerase chain reaction (qRT-PCR), western blotting assay and indirect immunofluorescence (IFA) were conducted for rescued virus identification. A total of 4.0 μg of recombinant plasmid of pIR-DHAV-1 and in vitro transcribed product of 4.0 μg of RNA-launched infectious clone named pR-DHAV-1 were transfected into BHK-21 cells to analyze the rescue efficiency. Following that, tissue tropism of rescued virus (rDHAV-1) and parental virus (pDHAV-1) were assayed for virulence testing in 1-day-old ducklings. Results Rescued virus particles carry the designed genetic marker which could be harvested by directly transfecting pIR-DHAV-1 to BHK-21 cells. The qRT-PCR and western blotting results indicated that rDHAV-1 shared similar growth characteristics with pDHAV-1. Furthermore, DNA-launched infectious system possessed much higher rescue efficiency assay compared to RNA-launched infectious system. The mutation at position 3042 from T to C has no impact on viral replication and tissue tropism. From 1 h post infection (hpi) to 48 hpi, the viral RNA copies of rDHAV-1 in liver were the highest among the six tested tissues (with an exception of thymus at 6 hpi), while the viral RNA copy numbers in heart and kidney were alternately the lowest. Conclusion We have constructed a genetically stable and highly pathogenic DNA-launched infectious clone, from which the rescued virus could be harvested by direct transfection with recombinant plasmids. rDHAV-1 shared similar growth characteristics and tissue tropism with pDHAV-1. The DNA-launched infectious system of DHAV-1 possessed higher rescue efficiency compared to the traditional RNA-launched infectious system.
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Affiliation(s)
- Junhao Chen
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, 271018, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, 271018, China
| | - Ruihua Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, 271018, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, 271018, China
| | - Shaoli Lin
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, 271018, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, 271018, China
| | - Pengfei Li
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, 271018, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, 271018, China
| | - Jingjing Lan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, 271018, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, 271018, China
| | - Zhijing Xie
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, 271018, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, 271018, China
| | - Yu Wang
- Department of Basic Medical Sciences, Taishan Medical College, Shandong, Taian, 271000, China
| | - Shijin Jiang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, 271018, China. .,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, 271018, China.
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24
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Wen X, Zhu D, Cheng A, Wang M, Chen S, Jia R, Liu M, Sun K, Zhao X, Yang Q, Wu Y, Chen X. Molecular epidemiology of duck hepatitis a virus types 1 and 3 in China, 2010-2015. Transbound Emerg Dis 2017; 65:10-15. [DOI: 10.1111/tbed.12741] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Indexed: 01/07/2023]
Affiliation(s)
- X. Wen
- Institute of Preventive Veterinary Medicine; Sichuan Agricultural University; Chengdu city Sichuan China
- Avian Disease Research Center; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an Sichuan China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province; Sichuan Agricultural University; Chengdu city Sichuan China
| | - D. Zhu
- Institute of Preventive Veterinary Medicine; Sichuan Agricultural University; Chengdu city Sichuan China
- Avian Disease Research Center; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an Sichuan China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province; Sichuan Agricultural University; Chengdu city Sichuan China
| | - A. Cheng
- Institute of Preventive Veterinary Medicine; Sichuan Agricultural University; Chengdu city Sichuan China
- Avian Disease Research Center; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an Sichuan China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province; Sichuan Agricultural University; Chengdu city Sichuan China
| | - M. Wang
- Institute of Preventive Veterinary Medicine; Sichuan Agricultural University; Chengdu city Sichuan China
- Avian Disease Research Center; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an Sichuan China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province; Sichuan Agricultural University; Chengdu city Sichuan China
| | - S. Chen
- Institute of Preventive Veterinary Medicine; Sichuan Agricultural University; Chengdu city Sichuan China
- Avian Disease Research Center; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an Sichuan China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province; Sichuan Agricultural University; Chengdu city Sichuan China
| | - R. Jia
- Institute of Preventive Veterinary Medicine; Sichuan Agricultural University; Chengdu city Sichuan China
- Avian Disease Research Center; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an Sichuan China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province; Sichuan Agricultural University; Chengdu city Sichuan China
| | - M. Liu
- Institute of Preventive Veterinary Medicine; Sichuan Agricultural University; Chengdu city Sichuan China
- Avian Disease Research Center; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an Sichuan China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province; Sichuan Agricultural University; Chengdu city Sichuan China
| | - K. Sun
- Institute of Preventive Veterinary Medicine; Sichuan Agricultural University; Chengdu city Sichuan China
- Avian Disease Research Center; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an Sichuan China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province; Sichuan Agricultural University; Chengdu city Sichuan China
| | - X. Zhao
- Institute of Preventive Veterinary Medicine; Sichuan Agricultural University; Chengdu city Sichuan China
- Avian Disease Research Center; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an Sichuan China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province; Sichuan Agricultural University; Chengdu city Sichuan China
| | - Q. Yang
- Institute of Preventive Veterinary Medicine; Sichuan Agricultural University; Chengdu city Sichuan China
- Avian Disease Research Center; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an Sichuan China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province; Sichuan Agricultural University; Chengdu city Sichuan China
| | - Y. Wu
- Institute of Preventive Veterinary Medicine; Sichuan Agricultural University; Chengdu city Sichuan China
- Avian Disease Research Center; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an Sichuan China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province; Sichuan Agricultural University; Chengdu city Sichuan China
| | - X. Chen
- Avian Disease Research Center; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an Sichuan China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province; Sichuan Agricultural University; Chengdu city Sichuan China
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25
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Ou X, Mao S, Cao J, Cheng A, Wang M, Zhu D, Chen S, Jia R, Liu M, Sun K, Yang Q, Wu Y, Chen X. Comparative analysis of virus-host interactions caused by a virulent and an attenuated duck hepatitis A virus genotype 1. PLoS One 2017; 12:e0178993. [PMID: 28614378 PMCID: PMC5470708 DOI: 10.1371/journal.pone.0178993] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Accepted: 05/22/2017] [Indexed: 12/31/2022] Open
Abstract
Because of their better immunogenicity and the improved protection they afford, live attenuated vaccines derived from serial passaging in an abnormal host are widely used to protect humans or animals from certain pathogens. Here, we used a virulent and a chicken embryo-attenuated duck hepatitis A virus genotype 1 to compare the different regulated immune responses induced by viruses with differing virulence. In this study, the attenuated strains had lower protein expression levels than the virulent strains as identified by immunohistochemistry. This may be caused by apparent codon usage bias selected during passage. Furthermore, lower translation efficiency led to decreased viral replication, which is highly dependent on non-structural viral protein expression. Although the two strains had differing levels of virulence, both could induce strong innate immune responses and robust Tc or Th cell populations during the early stages of the immune response. However, due to fixed single nucleotide polymorphisms (SNPs) selected by passage, the virulent and attenuated strains may induce differing immune responses, with stronger Tc cell immunity induced by the attenuated strain in the spleen and thymus and stronger Tc cell immunity induced by the virulent strain in the liver, lung, bursa of Fabricius and Harderian gland. Four immune related genes (RIG-1, MDA5, IFN-β, and IL-6) were highly differentially expressed in the Harderian gland, bursa of Fabricius and thymus. This study has provided further information about differences in virus-host interactions between duck hepatitis A viruses of differing virulence.
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Affiliation(s)
- Xumin Ou
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
| | - Sai Mao
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
| | - Jingyu Cao
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
| | - Anchun Cheng
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- * E-mail: (AC); (MW)
| | - Mingshu Wang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- * E-mail: (AC); (MW)
| | - Dekang Zhu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
| | - Shun Chen
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
| | - Renyong Jia
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
| | - Mafeng Liu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
| | - Kunfeng Sun
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
| | - Qiao Yang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
| | - Ying Wu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
| | - Xiaoyue Chen
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, Sichuan, People′s Republic of China
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26
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Zou Z, Ma J, Huang K, Chen H, Liu Z, Jin M. Live Attenuated Vaccine Based on Duck Enteritis Virus against Duck Hepatitis A Virus Types 1 and 3. Front Microbiol 2016; 7:1613. [PMID: 27777571 PMCID: PMC5056193 DOI: 10.3389/fmicb.2016.01613] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 09/27/2016] [Indexed: 12/21/2022] Open
Abstract
As causative agents of duck viral hepatitis, duck hepatitis A virus type 1 (DHAV-1) and type 3 (DHAV-3) causes significant economic losses in the duck industry. However, a licensed commercial vaccine that simultaneously controls both pathogens is currently unavailable. Here, we generated duck enteritis virus recombinants (rC-KCE-2VP1) containing both VP1 from DHAV-1 (VP1/DHAV-1) and VP1 from DHAV-3 (VP1/DHAV-3) between UL27 and UL26. A self-cleaving 2A-element of FMDV was inserted between the two different types of VP1, allowing production of both proteins from a single open reading frame. Immunofluorescence and Western blot analysis results demonstrated that both VP1 proteins were robustly expressed in rC-KCE-2VP1-infected chicken embryo fibroblasts. Ducks that received a single dose of rC-KCE-2VP1 showed potent humoral and cellular immune responses and were completely protected against challenges of both pathogenic DHAV-1 and DHAV-3 strains. The protection was rapid, achieved as early as 3 days after vaccination. Moreover, viral replication was fully blocked in vaccinated ducks as early as 1 week post-vaccination. These results demonstrated, for the first time, that recombinant rC-KCE-2VP1 is potential fast-acting vaccine against DHAV-1 and DHAV-3.
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Affiliation(s)
- Zhong Zou
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China; College of Veterinary Medicine, Huazhong Agricultural UniversityWuhan, China; Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of AgricultureWuhan, China
| | - Ji Ma
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China; College of Veterinary Medicine, Huazhong Agricultural UniversityWuhan, China
| | - Kun Huang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China; College of Veterinary Medicine, Huazhong Agricultural UniversityWuhan, China
| | - Huanchun Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China; College of Veterinary Medicine, Huazhong Agricultural UniversityWuhan, China; Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of AgricultureWuhan, China
| | - Ziduo Liu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China; College of Life Sciences, Huazhong Agricultural UniversityWuhan, China
| | - Meilin Jin
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China; College of Veterinary Medicine, Huazhong Agricultural UniversityWuhan, China; Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of AgricultureWuhan, China
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27
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Yao F, Chen Y, Shi J, Ming K, Liu J, Xiong W, Song M, Du H, Wang Y, Zhang S, Wu Y, Wang D, Hu Y. Replication cycle of duck hepatitis A virus type 1 in duck embryonic hepatocytes. Virology 2016; 491:73-8. [DOI: 10.1016/j.virol.2016.01.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 01/19/2016] [Accepted: 01/21/2016] [Indexed: 12/11/2022]
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