1
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Liu J, Shi X, Lv L, Wang K, Yang Z, Li Y, Chen H. Characterization of Co-infection With Fowl Adenovirus Serotype 4 and 8a. Front Microbiol 2021; 12:771805. [PMID: 34803992 PMCID: PMC8595916 DOI: 10.3389/fmicb.2021.771805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/04/2021] [Indexed: 11/13/2022] Open
Abstract
Fowl adenoviruses (FAdVs), which are distributed worldwide, have caused considerable economic losses to poultry farms. Co-infection with FAdVs and other avian pathogens has been reported previously. However, the pathogenicity of different serotypes of FAdVs causing co-infection remains unclear. Herein, strain HN from FAdV species C serotype 4 (FAdV-4) and strain AH720 from species E serotype 8a (FAdV-8a) were used to assess the pathogenicity of their co-infection in specific-pathogen-free (SPF) chickens. Compared with chickens infected with FAdV-4 alone, those co-infected with FAdV-4 and FAdV-8a showed similar clinical symptoms, mortality rates and degree of tissue lesions, and notably decreased viral loads of HN. Conversely, the viral loads of AH720 increased markedly in the co-infection group compared with that in chickens infected with AH720 strain alone. Increased viral loads of AH720 in the liver were suspected to contribute to the pathogenicity of chickens co-infected with the HN and AH720 strains. This was further investigated by histopathology and terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) staining analyses. Collectively, these data indicated that co-infection with FAdV-4 and FAdV-8a suppresses the replication and proliferation of FAdV-4 but enhances the replication and proliferation of FAdV-8a in chicken liver. This study will provide valuable information for the further investigation of the interactions between FAdV-4 and FAdV-8a during co-infection.
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Affiliation(s)
- Jingyi Liu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Xinjin Shi
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Lu Lv
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Kai Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Zhiwei Yang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Yunzhang Li
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Hongjun Chen
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
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2
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Xu AH, Sun L, Tu KH, Teng QY, Xue J, Zhang GZ. Experimental co-infection of variant infectious bursal disease virus and fowl adenovirus serotype 4 increases mortality and reduces immune response in chickens. Vet Res 2021; 52:61. [PMID: 33926543 PMCID: PMC8082832 DOI: 10.1186/s13567-021-00932-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 04/09/2021] [Indexed: 12/20/2022] Open
Abstract
Infectious bursal disease virus (IBDV) and fowl adenovirus serotype 4 (FAdV-4) cause infectious bursal disease (IBD) and hydropericardium-hepatitis syndrome, respectively. Recently, studies have reported co-infections of poultry with IBDV and FAdV-4, which is an important problem in the poultry industry. Here, the variant IBDV strain ZD-2018-1 and FAdV-4 isolate HB1501 were used to assess the pathogenicity of co-infection in 1-day-old specific pathogen-free (SPF) chickens. Compared with chickens infected with only FAdV-4, those coinfected with IBDV and FAdV-4 showed enhanced clinical symptoms, higher mortality, more severe tissue lesions, and higher biochemical index levels. Furthermore, the expression of interleukin (IL)-6, IL-1β, and interferon-γ mRNAs in the IBDV-FAdV-4 coinfected chickens was delayed, and the antibody response levels were significantly lower in those birds compared with the FAdV-4-infected chickens. These results indicate that co-infection with variant IBDV ZD-2018-1 and FAdV-4 HB1501 could significantly promote the pathogenicity of FAdV-4 and reduce the immune response in chickens. This study provides the foundation for further investigation of the interaction mechanism in IBDV and FAdV-4 co-infection.
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Affiliation(s)
- A-Hui Xu
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Lu Sun
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Kai-Hang Tu
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Qing-Yuan Teng
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Jia Xue
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Guo-Zhong Zhang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
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3
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Hou L, Chen X, Wang J, Li J, Yang H. A tandem mass tag-based quantitative proteomic analysis of fowl adenovirus serotype 4-infected LMH cells. Vet Microbiol 2021; 255:109026. [PMID: 33743407 DOI: 10.1016/j.vetmic.2021.109026] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 02/26/2021] [Indexed: 10/22/2022]
Abstract
Fowl adenovirus serotype 4 (FAdV-4) is recognized as an economically important pathogen for the poultry industry worldwide. FAdV-4 infection causes a metabolic disturbance of hepatocytes, leading to hydropericardium-hepatitis syndrome (HHS) in poultry. However, the metabolic response of hepatocytes to FAdV-4 infection remains poorly investigated. Here, a tandem mass tag (TMT)-based approach was first used to quantitatively identify differentially expressed proteins (DEPs) in leghorn male hepatoma (LMH) cells infected with the virulent FAdV-4 strain GY. We identified 666 DEPs associated with many biological processes and pathways, according to Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses. Functional enrichment analysis revealed that three pathways, including metabolism-related signaling pathways, apoptosis, and autophagy responses, were enriched during FAdV-4 infection. Moreover, excessive induction of metabolism-related signaling pathways by FAdV-4 infection might be associated with HHS induced by the virus. Meanwhile, among the proteins in these pathways, RRM2, SAE1, AEN, and RAD50 were verified through western blotting to be markedly altered in FAdV-4-infected LMH cells. Notably, overexpression of SAE1 inhibited the replication of FAdV-4 in vitro, whereas silencing of SAE1 expression promoted the replication of the virus. Collectively, our findings show for the first time that SAE1 is a host cellular protein that plays roles in regulating the life cycle of FAdV-4.
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Affiliation(s)
- Lidan Hou
- Key Laboratory of Animal Epidemiology of Chinese Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, PR China; China Institute of Veterinary Drug Control, Beijing, 100081, PR China
| | - Xiaochun Chen
- China Institute of Veterinary Drug Control, Beijing, 100081, PR China
| | - Jia Wang
- China Institute of Veterinary Drug Control, Beijing, 100081, PR China
| | - Junping Li
- China Institute of Veterinary Drug Control, Beijing, 100081, PR China.
| | - Hanchun Yang
- Key Laboratory of Animal Epidemiology of Chinese Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, PR China.
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4
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Lin Z, Huang R, Zhou J, Chen Y, Xu L, Gao Y, Wang C, Wang Q. Fowl Adenovirus Serotype 4 Influences Arginine Metabolism to Benefit Replication. Avian Dis 2020; 64:16-22. [PMID: 32267121 DOI: 10.1637/0005-2086-64.1.16] [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] [Received: 08/01/2019] [Accepted: 09/25/2019] [Indexed: 11/05/2022]
Abstract
Hydropericardium syndrome (HPS) is caused by fowl adenovirus serotype 4 (FAdV-4). HPS has caused outbreaks in Chinese populations of broiler chickens since 2015. However, little is known about the molecular mechanisms underlying HPS. In this study, we used transcriptomic analysis to screen differentially expressed genes (DEGs) in the livers of FAdV-4-infected and noninfected chicks. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that the gene network associated with the arginine metabolism pathway was enriched in livers infected by FAdV-4; 10 genes were downregulated and 8 genes were upregulated in these livers when compared to noninfected livers. The DEGs identified in livers were reanalyzed by real-time fluorescence quantitative PCR (qPCR); results indicated that the mRNA levels of the DEGs concurred with the data derived from KEGG analysis. Next, we used qPCR to detect the DEGs of the arginine metabolism pathway in a hepatocellular carcinoma cell line (LMH) after infection with FAdV-4 for 24 hr; this also indicated that the mRNA levels of the DEGs concurred with that seen in the liver. We also used si-RNA oligonucleotides to knock down the mRNA levels of iNOS in LMH cells infected with FAdV-4 and found that the viral load of FAdV-4 was increased. Further investigation revealed that the addition of 240 µg/ml of arginine into the culture medium of LMH cells infected with FAdV-4 for 24 hr led to a significant increase in the mRNA levels of iNOS but a significant reduction in the viral load of FAdV-4. Therefore, our data indicated that when broiler chickens become infected with FAdV-4, the arginine metabolic pathway in the liver becomes dysfunctional and the iNOS mRNA level decreases. This will add benefit to the replication of FAdV-4 but can be inhibited by the addition of an appropriate amount of arginine.
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Affiliation(s)
- Zhixin Lin
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, P.R. China
| | - Ruiling Huang
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, P.R. China
| | - Jiaxin Zhou
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, P.R. China
| | - Yuan Chen
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, P.R. China
| | - Lihui Xu
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, P.R. China
| | - Yuyun Gao
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, P.R. China
| | - Changkang Wang
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, P.R. China,
| | - Quanxi Wang
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, P.R. China, .,Fujian Key Laboratory of Traditional Chinese Veterinary Medicine and Animal Health, Fujian Agriculture and Forestry University, Fuzhou, 350002, P.R. China,
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5
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Liu R, Zhang Y, Guo H, Li N, Wang B, Tian K, Wang Z, Yang X, Li Y, Wang H, Zhang Y, Fu J, Zhao J. The increased virulence of hypervirulent fowl adenovirus 4 is independent of fiber-1 and penton. Res Vet Sci 2020; 131:31-37. [PMID: 32283442 DOI: 10.1016/j.rvsc.2020.04.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 04/02/2020] [Accepted: 04/04/2020] [Indexed: 12/31/2022]
Abstract
Hepatitis-hydropericardium syndrome (HHS) caused by hypervirulent fowl adenovirus 4 (FAdV-4) have been causing great economic losses to Chinese poultry industry since 2015. Elucidation of the pathogenesis of FAdV-4 will lay solid foundation for developing attenuated FAdV-4 vaccine and vaccine vector. Our previous study has demonstrated that the increased virulence of hypervirulent FAdV-4 was associated with fiber-2 and hexon genes. However, the roles of fiber-1 and penton in virulence of FAdV-4 have never been elucidated. To further investigate the roles of the major structural proteins fiber-1 and penton in the virulence of hypervirulent FAdV-4, the fiber-1- and penton-replaced mutant viruses were constructed based on the FAdV-4 infectious clones of hypervirulent strain HNJZ using Redαβ recombineering techniques. The pathogenicity of the rescued viruses was evaluated in 3-week-old SPF chickens. Chickens infected with the rescued recombinant viruses carrying the fiber-1 or penton base gene from a nonpathogenic strain ON1 developed similar clinical signs to the natural hypervirulent FAdV-4 infection, including HHS-indicative gross lesions and histopathological changes in sick/dead chickens. Our results suggested that the increased virulence of hypervirulent FAdV-4 was independent of fiber-1 and penton. The detailed pathogenesis of FAdV-4 and the roles of fiber-1 and penton in the viral replication and infection process need to be further explored.
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Affiliation(s)
- Ruxin Liu
- Shandong University-Hemholtz Institute of Biotechnology, State Key laboratory of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China
| | - Yuhan Zhang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, People's Republic of China
| | - Huifang Guo
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, People's Republic of China
| | - Ning Li
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, People's Republic of China
| | - Baiyu Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, People's Republic of China
| | - Kaiyue Tian
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, People's Republic of China
| | - Zeng Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, People's Republic of China
| | - Xia Yang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, People's Republic of China
| | - Yongtao Li
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, People's Republic of China
| | - Hailong Wang
- Shandong University-Hemholtz Institute of Biotechnology, State Key laboratory of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China
| | - Youming Zhang
- Shandong University-Hemholtz Institute of Biotechnology, State Key laboratory of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China
| | - Jun Fu
- Shandong University-Hemholtz Institute of Biotechnology, State Key laboratory of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China.
| | - Jun Zhao
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, People's Republic of China.
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6
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Tian KY, Guo HF, Li N, Zhang YH, Wang Z, Wang B, Yang X, Li YT, Zhao J. Protection of chickens against hepatitis-hydropericardium syndrome and Newcastle disease with a recombinant Newcastle disease virus vaccine expressing the fowl adenovirus serotype 4 fiber-2 protein. Vaccine 2020; 38:1989-1997. [PMID: 31948818 DOI: 10.1016/j.vaccine.2020.01.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 12/26/2019] [Accepted: 01/04/2020] [Indexed: 01/01/2023]
Abstract
Newcastle disease (ND) is one of the most important and devastating avian diseases with considerable threat to the global poultry industry. Hepatitis-hydropericardium syndrome (HHS), caused by virulent fowl adenovirus serotype 4 (FAdV-4), is another highly infectious disease in chickens with severe economic impact. The effective way to combat ND and HHS is by vaccinating the poultry. In the present study, a recombinant NDV LaSota vaccine strain expressing full length fiber-2 gene of FAdV-4 (rLaSota-fiber2) was generated using reverse genetics. The FAdV-4 fiber-2 protein was expressed as a soluble form rather than NDV membrane-anchored form. The rLaSota-fiber2 was genetically stable, and it showed growth patterns in embryonated eggs comparable to that of parental rLaSota virus. Since our unpublished data demonstrated that delivery of live rLaSota-fiber2 in drinking water or ocular delivery of the vaccine didn't produce protection against hypervirulent FAdV-4 challenge, even though the vaccine provide full protection against NDV challenge, the efficacy of the rLaSota-fiber2 was evaluated by delivering the vaccine intramuscularly in this study. Single-dose intramuscular vaccination of 2-week-old SPF White Leghorn chicks with the live or inactivated rLaSota-fiber2 provided complete protection against virulent NDV challenge. However, single-dose intramuscular vaccination with the live rLaSota-fiber2 vaccine provided better protection against virulent FAdV-4 challenge and significantly reduced faecal viral shedding comparing to the inactivated vaccine. These results indicate that the NDV-vectored FAdV-4 vaccine is a promising bivalent vaccine candidate to control both HHS and ND.
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Affiliation(s)
- Kai-Yue Tian
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Hui-Fang Guo
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Ning Li
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Yu-Han Zhang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Zeng Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Baiyu Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Xia Yang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Yong-Tao Li
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Jun Zhao
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China.
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7
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Shao H, Lu Y, Wang W, Li T, Zhang J, Wan Z, Liang G, Gao W, Qin A, Ye J. Two novel monoclonal antibodies against fiber-1 protein of FAdV-4 and their application in detection of FAdV-4/10. BMC Vet Res 2019; 15:232. [PMID: 31286975 PMCID: PMC6615226 DOI: 10.1186/s12917-019-1987-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 06/30/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Recently, serotype 4 fowl adenovirus (FAdV-4) has spread widely and caused huge economic loss to poultry industry. However, little is known about the molecular pathogenesis of FAdV-4. Fiber protein is thought to be vital for its infection and pathogenesis. RESULTS Two novel monoclonal antibodies (mAbs) targeting the fiber-1 protein of FAdV-4 were generated, designated as mAb 3B5 and 6H9 respectively. Indirect immunofluorescence assay (IFA) showed that both mAbs only reacted with the FAdV-4 and FAdV-10, not with other serotypes including FAdV-1, FAdV-5, FAdV-6, FAdV-7, FAdV-8 and FAdV-9 tested. Although both mAbs did not recognize the linear epitopes, they could efficiently immunoprecipitate the fiber-1 protein in LMH cells either infected with FAdV-4 or transfected with pcDNA3.1-Fiber-1. Moreover, mAb 3B5 as a capture antibody and HRP-conjugated mAb 6H9 as a detection antibody, a novel sandwich ELISA for efficient detection of FAdV-4 was generated. The limit of detection of the ELISA could reach to 1000 TCID50/ml of FAdV-4 and the ELISA could be efficiently applied to detect FAdV-4 in the clinical samples. CONCLUSION The two mAbs specific targeting fiber-1 generated here would pave the way for further studying on the role of fiber-1 in the infection and pathogenesis of FAdV-4, and the established mAb based sandwich ELISA would provide an efficient diagnostics tool for detection of FAdV-4/10.
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Affiliation(s)
- Hongxia Shao
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Yanan Lu
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Weikang Wang
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Tuofan Li
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Jianjun Zhang
- Sinopharm Yangzhou VAC Biological Engineering Co. Ltd, Yangzhou, 225127, Jiangsu, China
| | - Zhimin Wan
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Guangchen Liang
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Wei Gao
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Aijian Qin
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Jianqiang Ye
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China. .,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China. .,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, 225009, Jiangsu, China. .,Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
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8
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Shao H, Wang P, Wang W, Zhang J, Li T, Liang G, Gao W, Qin A, Ye J. A novel monoclonal antibodies-based sandwich ELISA for detection of serotype 4 fowl adenovirus. Avian Pathol 2019; 48:204-208. [PMID: 30621493 DOI: 10.1080/03079457.2019.1566595] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
As a major causative agent for hepatitis-hydropericardium syndrome (HPS) in chickens, serotype 4 fowl adenovirus (FAdV-4) has caused huge economic losses in the poultry industry globally. However, there is no commercial diagnostic test for FAdV-4 antigens. To generate a rapid approach for specific detection of FAdV-4, a monoclonal antibodies (mAbs)-based sandwich ELISA was developed. In this ELISA, a purified mAb 4A3 and a HRP-labelled mAb 3C2 specific to the fiber-2 of FAdV-4 were used as the capture antibody and detection antibody respectively. Specificity assay revealed the ELISA only reacted with FAdV-4, not with other avian viruses tested. Sensitivity assay showed the limit of detection of the ELISA was 1000 TCID50/ml and 12.5 ng/ml for the FAdV-4 and the purified GST-Fiber2 protein respectively. Moreover, the ELISA could be efficiently applied in detecting the FAdV-4 in tissue samples from a clinically-diseased chicken flock. All these data demonstrated that the ELISA developed here provides a promising tool for rapid and efficient diagnosis of clinical infection with FAdV-4.
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Affiliation(s)
- Hongxia Shao
- a Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education , College of Veterinary Medicine, Yangzhou University , Yangzhou , People's Republic of China.,b Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou , People's Republic of China.,c Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of People's Republic of China , Yangzhou University , Yangzhou , People's Republic of China
| | - Ping Wang
- a Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education , College of Veterinary Medicine, Yangzhou University , Yangzhou , People's Republic of China.,b Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou , People's Republic of China.,c Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of People's Republic of China , Yangzhou University , Yangzhou , People's Republic of China
| | - Weikang Wang
- a Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education , College of Veterinary Medicine, Yangzhou University , Yangzhou , People's Republic of China.,b Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou , People's Republic of China.,c Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of People's Republic of China , Yangzhou University , Yangzhou , People's Republic of China
| | - Jianjun Zhang
- d Sinopharm Yangzhou VAC Biological Engineering Co. Ltd , Yangzhou , People's Republic of China
| | - Tuofan Li
- a Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education , College of Veterinary Medicine, Yangzhou University , Yangzhou , People's Republic of China.,b Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou , People's Republic of China.,c Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of People's Republic of China , Yangzhou University , Yangzhou , People's Republic of China
| | - Guangchen Liang
- a Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education , College of Veterinary Medicine, Yangzhou University , Yangzhou , People's Republic of China.,b Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou , People's Republic of China.,c Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of People's Republic of China , Yangzhou University , Yangzhou , People's Republic of China
| | - Wei Gao
- a Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education , College of Veterinary Medicine, Yangzhou University , Yangzhou , People's Republic of China.,b Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou , People's Republic of China.,c Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of People's Republic of China , Yangzhou University , Yangzhou , People's Republic of China
| | - Aijian Qin
- a Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education , College of Veterinary Medicine, Yangzhou University , Yangzhou , People's Republic of China.,b Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou , People's Republic of China.,c Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of People's Republic of China , Yangzhou University , Yangzhou , People's Republic of China
| | - Jianqiang Ye
- a Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education , College of Veterinary Medicine, Yangzhou University , Yangzhou , People's Republic of China.,b Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou , People's Republic of China.,c Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of People's Republic of China , Yangzhou University , Yangzhou , People's Republic of China
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Zhang Y, Liu R, Tian K, Wang Z, Yang X, Gao D, Zhang Y, Fu J, Wang H, Zhao J. Fiber2 and hexon genes are closely associated with the virulence of the emerging and highly pathogenic fowl adenovirus 4. Emerg Microbes Infect 2018; 7:199. [PMID: 30514838 PMCID: PMC6279807 DOI: 10.1038/s41426-018-0203-1] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 11/10/2018] [Accepted: 11/11/2018] [Indexed: 01/24/2023]
Abstract
Since May 2015, outbreaks of hydropericardium-hepatitis syndrome (HHS) caused by fowl adenovirus 4 (FAdV-4) with a novel genotype have been reported in China, causing significant economic losses to the poultry industry. A previous comparative analysis revealed that highly virulent FAdV-4 isolates contain various genomic deletions and multiple distinct mutations in the major structural genes fiber2 and hexon. To identify the genes responsible for the virulence of HHS-associated novel FAdV-4 isolates, FAdV-4 infectious clones were constructed by directly cloning the whole genome of a highly pathogenic FAdV-4 isolate (CH/HNJZ/2015) and that of a nonpathogenic strain (ON1) into a p15A-cm vector using the ExoCET method. Subsequently, the fiber2, hexon, and 1966-bp fragment-replaced mutant/recombinant viruses were constructed using Redαβ recombineering and ccdB counter-selection techniques. The pathogenicity of the rescued viruses was compared with that of the rescued parent viruses rHNJZ and rON1 in 3-week-old SPF chickens. Chickens infected with the rescued viruses carrying the fiber2 and/or hexon gene of the HNJZ strain developed similar clinical signs to the natural infection, with distinctive gross lesions and characteristic histological signs indicative of HHS observed in sick/dead chickens. Our results clearly demonstrated that the virulence of the novel highly pathogenic FAdV-4 strain was independent of the 1966-bp deletion and that the fiber2 and hexon genes have crucial roles in FAdV-4 pathogenicity. The data presented in this report will provide further insights into the crucial factors determining the pathogenicity of FAdV strains. Furthermore, the infectious clones generated based on the FAdV-4 genome can be used as a platform for studies of gene function and for the development of recombinant vaccines.
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Affiliation(s)
- Yuhan Zhang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China
| | - Ruxin Liu
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Kaiyue Tian
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China
| | - Zeng Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China
| | - Xia Yang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China
| | - Dongsheng Gao
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China
| | - Youming Zhang
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Jun Fu
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China.
| | - Hailong Wang
- Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China.
| | - Jun Zhao
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.
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