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Yu M, Zhang Y, Zhang L, Wang S, Liu Y, Xu Z, Liu P, Chen Y, Guo R, Meng L, Zhang T, Fan W, Qi X, Gao L, Zhang Y, Cui H, Gao Y. N123I mutation in the ALV-J receptor-binding domain region enhances viral replication ability by increasing the binding affinity with chNHE1. PLoS Pathog 2024; 20:e1011928. [PMID: 38324558 PMCID: PMC10878525 DOI: 10.1371/journal.ppat.1011928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 02/20/2024] [Accepted: 12/28/2023] [Indexed: 02/09/2024] Open
Abstract
The subgroup J avian leukosis virus (ALV-J), a retrovirus, uses its gp85 protein to bind to the receptor, the chicken sodium hydrogen exchanger isoform 1 (chNHE1), facilitating viral invasion. ALV-J is the main epidemic subgroup and shows noteworthy mutations within the receptor-binding domain (RBD) region of gp85, especially in ALV-J layer strains in China. However, the implications of these mutations on viral replication and transmission remain elusive. In this study, the ALV-J layer strain JL08CH3-1 exhibited a more robust replication ability than the prototype strain HPRS103, which is related to variations in the gp85 protein. Notably, the gp85 of JL08CH3-1 demonstrated a heightened binding capacity to chNHE1 compared to HPRS103-gp85 binding. Furthermore, we showed that the specific N123I mutation within gp85 contributed to the enhanced binding capacity of the gp85 protein to chNHE1. Structural analysis indicated that the N123I mutation primarily enhanced the stability of gp85, expanded the interaction interface, and increased the number of hydrogen bonds at the interaction interface to increase the binding capacity between gp85 and chNHE1. We found that the N123I mutation not only improved the viral replication ability of ALV-J but also promoted viral shedding in vivo. These comprehensive data underscore the notion that the N123I mutation increases receptor binding and intensifies viral replication.
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Affiliation(s)
- Mengmeng Yu
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yao Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Li Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Suyan Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yongzhen Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Zhuangzhuang Xu
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Peng Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yuntong Chen
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Ru Guo
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Lingzhai Meng
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Tao Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Wenrui Fan
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Xiaole Qi
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Li Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yanping Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Hongyu Cui
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yulong Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China
- National Poultry Laboratory Animal Resource Center, Harbin, China
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Cheng X, Yang J, Bi X, Yang Q, Zhou D, Zhang S, Ding L, Wang K, Hua S, Cheng Z. Molecular characteristics and pathogenicity of a Tibet-origin mutant avian leukosis virus subgroup J isolated from Tibetan chickens in China. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2023; 109:105415. [PMID: 36775048 DOI: 10.1016/j.meegid.2023.105415] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/02/2022] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
Tibetan chicken is found in China Tibet (average altitude; ˃4500 m). However, little is known about avian leukosis virus subgroup J (ALV-J) found in Tibetan chickens. ALV-J is a typical alpharetrovirus that causes immunosuppression and myelocytomatosis and thus seriously affects the development of the poultry industry. In this study, Tibet-origin mutant ALV-J was isolated from Tibetan chickens and named RKZ-1-RKZ-5. A Myelocytomatosis outbreak occurred in a commercial Tibetan chicken farm in Shigatse of Rikaze, Tibet, China, in March 2022. About 20% of Tibetan chickens in the farm showed severe immunosuppression, and mortality increased to 5.6%. Histopathological examination showed typical myelocytomas in various tissues. Virus isolation and phylogenetic analysis demonstrated that ALV-J caused the disease. Gene-wide phylogenetic analysis showed the RKZ isolates were the original strains of the previously reported Tibetan isolates (TBC-J4 and TBC-J6) (identity; 94.5% to 94.9%). Furthermore, significant nucleotide mutations and deletions occurred in the hr1 and hr2 hypervariable regions of gp85 gene, 3'UTR, Y Box, and TATA Box of 3'LTR. Pathogenicity experiments demonstrated that the viral load, viremia, and viral shedding level were significantly higher in RKZ-1-infected chickens than in NX0101-infected chickens. Notably, RKZ-1 caused more severe cardiopulmonary damage in SPF chickens. These findings prove the origin of Tibet ALV-J and provide insights into the molecular characteristics and pathogenic ability of ALV-J in the plateau area. Therefore, this study may provide a basis for ALV-J prevention and eradication in Tibet.
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Affiliation(s)
- Xiangyu Cheng
- College of Veterinary Medicine, Shandong Agriculture University, Taian 271018, China
| | - Jianhao Yang
- College of Veterinary Medicine, Shandong Agriculture University, Taian 271018, China
| | - Xiaoqing Bi
- College of Veterinary Medicine, Shandong Agriculture University, Taian 271018, China
| | - Qi Yang
- College of Veterinary Medicine, Shandong Agriculture University, Taian 271018, China
| | - Defang Zhou
- College of Veterinary Medicine, Shandong Agriculture University, Taian 271018, China
| | - Shicheng Zhang
- College of Veterinary Medicine, Shandong Agriculture University, Taian 271018, China
| | - Longying Ding
- College of Veterinary Medicine, Shandong Agriculture University, Taian 271018, China
| | - Kang Wang
- College of Veterinary Medicine, Shandong Agriculture University, Taian 271018, China
| | - Shuhan Hua
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Ziqiang Cheng
- College of Veterinary Medicine, Shandong Agriculture University, Taian 271018, China.
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3
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The Emergence, Diversification, and Transmission of Subgroup J Avian Leukosis Virus Reveals that the Live Chicken Trade Plays a Critical Role in the Adaption and Endemicity of Viruses to the Yellow-Chickens. J Virol 2022; 96:e0071722. [PMID: 35950858 PMCID: PMC9472763 DOI: 10.1128/jvi.00717-22] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The geographical spread and inter-host transmission of the subgroup J avian leukosis virus (ALV-J) may be the most important issues for epidemiology. An integrated analysis, including phylogenetic trees, homology modeling, evolutionary dynamics, selection analysis and viral transmission, based on the gp85 gene sequences of the 665 worldwide ALV-J isolates during 1988-2020, was performed. A new Clade 3 has been emerging and was evolved from the dominating Clade 1.3 of the Chinese Yellow-chicken, and the loss of a α-helix or β-sheet of the gp85 protein monomer was found by the homology modeling. The rapid evolution found in Clades 1.3 and 3 may be closely associated with the adaption and endemicity of viruses to the Yellow-chickens. The early U.S. strains from Clade 1.1 acted as an important source for the global spread of ALV-J and the earliest introduction into China was closely associated with the imported chicken breeders in the 1990s. The dominant outward migrations of Clades 1.1 and 1.2, respectively, from the Chinese northern White-chickens and layers to the Chinese southern Yellow-chickens, and the dominating migration of Clade 1.3 from the Chinese southern Yellow-chickens to other regions and hosts, indicated that the long-distance movement of these viruses between regions in China was associated with the live chicken trade. Furthermore, Yellow-chickens have been facing the risk of infections of the emerging Clades 2 and 3. Our findings provide new insights for the epidemiology and help to understand the critical factors involved in ALV-J dissemination. IMPORTANCE Although the general epidemiology of ALV-J is well studied, the ongoing evolutionary and transmission dynamics of the virus remain poorly investigated. The phylogenetic differences and relationship of the clades and subclades were characterized, and the epidemics and factors driving the geographical spread and inter-host transmission of different ALV-J clades were explored for the first time. The results indicated that the earliest ALV-J (Clade 1.1) from the United States, acted as the source for global spreads, and Clades 1.2, 1.3 and 3 were all subsequently evolved. Also the epidemiological investigation showed that the early imported breeders and the inter-region movements of live chickens facilitated the ALV-J dispersal throughout China and highlighted the needs to implement more effective containment measures.
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Meng F, Li Q, Han R, Xu G, Gao X, Luo F, Shen G, Liu X, Zhang Z, Zhao P, Zhang G. A study on the infection status and transmission of avian leukosis virus subgroup J in Hy-line brown roosters. Arch Virol 2022; 167:1521-1527. [PMID: 35606465 DOI: 10.1007/s00705-022-05452-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 03/19/2022] [Indexed: 11/28/2022]
Abstract
Avian leukosis virus subgroup J (ALV-J) is the most prevalent subgroup in chickens and exhibits increased pathogenicity and stronger horizontal and vertical transmission ability among different breeds. Although vertical transmission of ALV-J from infected hens through artificial insemination has been inferred from the detection of the p27 antigen in swabs and serum, there has been no further research on the transmission pattern of ALVs in roosters. In the present study, the positive rate of ALV increased significantly in an indigenous flock after detecting the p27 antigen via enzyme-linked immunosorbent assay (ELISA) and virus isolation in DF-1 cells. Viral sequence comparisons and an indirect fluorescent antibody assay showed that these isolates belonged to the ALV-J subgroup but formed a new branch in a phylogenetic tree when compared to domestic and foreign referential strains. The gp85 gene of the ALV-J isolated from hens and albumen was 94.1-99.7% identical to that in roosters, revealing that these isolates were quite likely transmitted to the hens and their offspring through the semen of ALV-infected roosters by artificial insemination from the Hy-line brown roosters. In addition, we defined four ALV-J infection states in plasma and semen of roosters (P+S+, P-S+, P+S-, and P-S-), which suggests that, in order to eradicate ALV in roosters, it is necessary to perform virus isolation using both semen and plasma. Additionally, ALV detection in semen by ELISA produced false-positive and false-negative results when compared to virus isolation in DF-1 cells. Collectively, our results suggested that an incomplete process of eradication of ALV from ALV-positive roosters led to the sporadic presence of ALV-J in laying hens.
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Affiliation(s)
- Fanfeng Meng
- College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Qiuchen Li
- College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Rui Han
- TECON Biopharmaceutical Co., Ltd., Xinjiang, China
| | - Guanlong Xu
- China Institute of Veterinary Drug Control, Beijing, China
| | - Xintao Gao
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Fubing Luo
- Beijing Center for Animal Disease Control and Prevention, Beijing, China
| | - Guangnian Shen
- Beijing Center for Animal Disease Control and Prevention, Beijing, China
| | - Xiaodong Liu
- Beijing Center for Animal Disease Control and Prevention, Beijing, China
| | - Zhifang Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Peng Zhao
- College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, China.
| | - Guozhong Zhang
- College of Veterinary Medicine, China Agricultural University, Beijing, China.
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5
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Mo G, Fu H, Hu B, Zhang Q, Xian M, Zhang Z, Lin L, Shi M, Nie Q, Zhang X. SOCS3 Promotes ALV-J Virus Replication via Inhibiting JAK2/STAT3 Phosphorylation During Infection. Front Cell Infect Microbiol 2021; 11:748795. [PMID: 34568100 PMCID: PMC8461107 DOI: 10.3389/fcimb.2021.748795] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 08/26/2021] [Indexed: 11/25/2022] Open
Abstract
Avian leukosis virus subgroup J (ALV-J) is an oncogenic retrovirus that causes immunosuppression and neoplastic diseases in poultry. Cytokine signal-transduction inhibitor molecule 3 (SOCS3) is an important negative regulator of the JAK2/STAT3 signaling pathway and plays certain roles in ALV-J infection. It is of significance to confirm the roles of SOCS3 in ALV-J infection and study how this gene affects ALV-J infection. In this study, we assessed the expression of the SOCS3 gene in vivo and in vitro, and investigated the roles of SOCS3 in ALV-J infection using overexpressed or interfered assays with the SOCS3 in DF-1 cells. The results showed that the SOCS3 expression of ALV-J infected chickens was different from uninfected chickens in the spleen, thymus and cecal tonsil. Further, SOCS3 is mainly expressed in the nucleus as determined by immunofluorescence assay. Overexpression of SOCS3 in DF-1 cells promoted the replication of ALV-J virus, and the expression of interferons (IFNα and INFβ), inflammatory factors (IL-6 and TNFα) along with interferon-stimulating genes (CH25H, MX1, OASL, and ZAP). Conversely, interference of SOCS3 showed the opposite results. We also observed that SOCS3 promoted ALV-J virus replication by inhibiting JAK2/STAT3 phosphorylation. In conclusion, SOCS3 promotes ALV-J replication via inhibiting the phosphorylation of the JAK2/STAT3 signaling pathway. These results would advance further understanding of the persistent infection and the viral immune evasion of the ALV-J virus.
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Affiliation(s)
- Guodong Mo
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Huali Fu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Bowen Hu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Qihong Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Mingjian Xian
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Zihao Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Ling Lin
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Meiqing Shi
- Division of Immunology, Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, College Park, MD, United States
| | - Qinghua Nie
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Xiquan Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Guangzhou, China
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6
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Li T, Xie J, Yao X, Zhang J, Li C, Ren D, Li L, Xie Q, Shao H, Qin A, Ye J. The tyrosine phosphatase SHP-2 dephosphorylated by ALV-J via its Env efficiently promotes ALV-J replication. Virulence 2021; 12:1721-1731. [PMID: 34167452 PMCID: PMC8237968 DOI: 10.1080/21505594.2021.1939952] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Avian leukosis virus subgroup J (ALV-J) generally induces hemangioma, myeloid leukosis, and immunosuppression in chickens, causing significant poultry industry economic losses worldwide. The unusual env gene of ALV-J, with low homology to other subgroups of ALVs, is associated with its unique pathogenesis. However, the exact molecular basis for the pathogenesis and oncogenesis of ALV-J is still not fully understood. In this study, ALV-J infection and the overexpression of Env could efficiently downregulate the phosphorylation of SHP-2 (pSHP-2) in vitro and in vivo. The membrane-spanning domain (MSD) in Env Gp37 was the functional domain responsible for pSHP-2 downregulation. Moreover, the overexpression of SHP-2 could effectively promote the replication of ALV-J, whereas knockout or allosteric inhibition of SHP-2 could inhibit ALV-J replication. In addition, the knockout of endogenous chicken SHP-2 could significantly increase the proliferation ability of DF-1 cells. All these data demonstrate that SHP-2 dephosphorylated by ALV-J Env could efficiently promote ALV-J replication, highlighting the important role of SHP-2 in the pathogenesis of ALV-J and providing a new target for developing antiviral drugs against ALV-J.
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Affiliation(s)
- 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, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Jing Xie
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Xiaohui Yao
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Jun Zhang
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Chunping Li
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Dan Ren
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Luyuan Li
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Quan Xie
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - 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, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China.,Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, 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, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China.,Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, 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, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China.,Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, Jiangsu, China
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7
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Deng Q, Li M, He C, Lu Q, Gao Y, Li Q, Shi M, Wang P, Wei P. Genetic diversity of avian leukosis virus subgroup J (ALV-J): toward a unified phylogenetic classification and nomenclature system. Virus Evol 2021; 7:veab037. [PMID: 34026272 PMCID: PMC8129623 DOI: 10.1093/ve/veab037] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Avian leukosis virus subgroup J (ALV-J) has infected a variety of birds, causing major economic losses in China. Understanding the comprehensive criteria of classification and nomenclature of ALV-J would be useful for the investigation of the viral evolution and also for the prevention and control of this infection. An in-depth analysis of the genetic diversity of ALV-J was performed in the present study. Four hundred and seventy-five sequences of the gp85 gene, including thirteen of avian endogenous retrovirus designated ev/J and 462 of ALV-J, were used in the phylogenetic and the evolutionary distance analysis for this classification. The study identified that the current ALV-J strains were divided into two first-order clades (Clades 1 and 2) and three second-order clades (Clades 1.1, 1.2 and 1.3). The current Chinese ALV-J strains are predominantly in Clade 1.3, and the Chinese and Egyptian chicken flocks have been facing the emerging Clade 2 viruses. This system pioneers the classification efforts for ALV-J, which uses Pilot tree for rapid classification of the new isolates and also the addition of possible new clades. The proposed unified classification system will facilitate future studies of ALV-J epidemiology and genetic evolution and of the comparison of sequences obtained across the world.
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Affiliation(s)
- Qiaomu Deng
- Institute for Poultry Science and Health, Guangxi University, Nanning, Guangxi 530004, China
| | - Min Li
- Institute for Poultry Science and Health, Guangxi University, Nanning, Guangxi 530004, China
| | - Chengwei He
- Pingxiang Customs P. R. China, 341 Nanda Road, Pingxiang, Guangxi 532600, China
| | - Qiaoe Lu
- Institute for Poultry Science and Health, Guangxi University, Nanning, Guangxi 530004, China
| | - Yanli Gao
- Institute for Poultry Science and Health, Guangxi University, Nanning, Guangxi 530004, China
| | - Qiuhong Li
- Institute for Poultry Science and Health, Guangxi University, Nanning, Guangxi 530004, China
| | - Mengya Shi
- Institute for Poultry Science and Health, Guangxi University, Nanning, Guangxi 530004, China
| | - Peikun Wang
- Institute of Microbe and Host Health, Linyi University, Linyi, Shandong 276005, China
| | - Ping Wei
- Institute for Poultry Science and Health, Guangxi University, Nanning, Guangxi 530004, China
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8
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Xu M, Mu X, Qian K, Shao H, Yao Y, Nair V, Wang J, Ye J, Qin A. Novel mutation of avian leukosis virus subgroup J from Tibetan chickens. Poult Sci 2021; 100:100931. [PMID: 33518331 PMCID: PMC7936214 DOI: 10.1016/j.psj.2020.12.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 11/20/2020] [Accepted: 12/15/2020] [Indexed: 12/03/2022] Open
Abstract
Tibetan chickens are descendants of the ancestral red jungle fowl Gallus gallus. Very little is known about pathogens in Tibetan chickens living in the high-altitude environment. Here, we report for the first time the detection and isolation of avian leukosis virus from Tibetan chickens, with all the avian leukosis virus-positive samples belonging to subgroup J. Phylogenetic analysis of the sequence revealed these viruses were in a new branch compared with previous reports. The 3'-end of the pol gene in the new strains showed 8-amino acid deletion, with 2 strains displaying a large-scale deletion in the hr2 region of gp85 protein. Among all the strains, several mutations in the primer binding site leader sequence and untranslated region, which came from Rous-associated virus, were identified. It is interesting that some of these mutations may have contributed to the competitive advantages to these isolates as observed from their increased replication in vitro. These results indicated that the virus isolates from Tibetan chickens can have competitive advantage over the other strains circulating in the poultry population in future.
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Affiliation(s)
- Moru Xu
- Yangzhou University, Yangzhou, Jiangsu 225009, P.R. China
| | - Xiaohui Mu
- Jiangsu Agri-animal Husbandry Vocational College, Taizhou, Jiangsu 225300, P. R. China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, P.R. China
| | - Kun Qian
- Yangzhou University, Yangzhou, Jiangsu 225009, P.R. China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, P.R. China
| | - Hongxia Shao
- Yangzhou University, Yangzhou, Jiangsu 225009, P.R. China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, P.R. China
| | - Yongxiu Yao
- The Pirbright Institute & UK-China Centre of Excellence on Avian Disease Research, Surrey GU24 0NF, United Kingdom
| | - Venugopal Nair
- The Pirbright Institute & UK-China Centre of Excellence on Avian Disease Research, Surrey GU24 0NF, United Kingdom
| | - Jian Wang
- Jiangsu Agri-animal Husbandry Vocational College, Taizhou, Jiangsu 225300, P. R. China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, P.R. China
| | - Jianqiang Ye
- Yangzhou University, Yangzhou, Jiangsu 225009, P.R. China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, P.R. China
| | - Aijian Qin
- Yangzhou University, Yangzhou, Jiangsu 225009, P.R. China.
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9
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Phylogenetic Analysis of ALV-J Associated with Immune Responses in Yellow Chicken Flocks in South China. Mediators Inflamm 2021; 2021:6665871. [PMID: 33628117 PMCID: PMC7886527 DOI: 10.1155/2021/6665871] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 12/23/2020] [Accepted: 01/22/2021] [Indexed: 02/06/2023] Open
Abstract
The aim of this study was to better understand the sequence characteristics and immune responses in avian leukosis virus subgroup J (ALV-J) infected yellow chicken flocks in South China. We isolated four strains of ALV-J virus from these flocks, which were then identified by several methods, including subtype-specific polymerase chain reaction (PCR), enzyme-linked immunosorbent assay (ELISA), and immunofluorescence assay (IFA). All four viruses were sequenced for their complete genomes and named GD19GZ01, GD19GZ02, GD19GZ03, and GD19GZ04. In comparison with the reference sequence, the homology analysis showed that the gag and pol genes were relatively conserved, whereas env contained much variation. Both GD19GZ01 and GD19GZ02 almost entirely lacked the rTM region and E element, while the latter was retained in GD19GZ03 and GD19GZ04. Moreover, the virus replication levels in GD19GZ03 and GD19GZ04were much higher than those in GD19GZ01 and GD19GZ02. And three virus recombination events in GD19GZ01 and GD19GZ02 were revealed by the results of PDR5 and SimPlot software analysis. Additionally, we found that some interferon-stimulating genes (CH25H, MX, PKR, OAS, and ZAP) and inflammatory mediators (IL-4, IL-6, IL-10, IL-12, 1L-18, and TNF-α) were significantly upregulated in the immune system organs of clinical chickens. Taken together, these findings clarify and reveal the sequence characteristics and trends in the variation of ALV-J infection in yellow chicken flocks of South China.
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10
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Ye F, Wang Y, He Q, Wang Z, Ma E, Zhu S, Yu H, Yin H, Zhao X, Li D, Xu H, Li H, Zhu Q. Screening of immune biomarkers in different breeds of chickens infected with J subgroup of avian leukemia virus by proteomic. Virulence 2020; 11:1158-1176. [PMID: 32799626 PMCID: PMC7549955 DOI: 10.1080/21505594.2020.1809323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 08/05/2020] [Accepted: 08/08/2020] [Indexed: 12/25/2022] Open
Abstract
Avian leucosis (AL) is a disease characterized by tumors and is caused by the avian leukosis virus (ALV). Because of the high variability of viruses and complex pathogenic mechanisms, screening and breeding J subgroup of ALV (ALV-J) resistant avian breeds is one of the strategies for prevention and treatment of AL, thus screening of significant immune markers is needed to promote the development of disease-resistant breeds. In this study, data-independent acquisition (DIA) technology was used to detect the DEPs of three breeds of chicken according to different comparison to investigate the potential markers. Results showed special DEPs for spleen development of each breed were detected, such as PCNT, DDB2, and ZNF62. These DEPs were involved in intestinal immune network used in production of IgA signaling pathways and related to immune response which can be used as potential markers for spleen development in different breeds. The DEPs such as RAB44 and TPN involved in viral myocarditis, transcriptional misregulation in cancer, and tuberculosis can be used as potential markers of spleen immune response after ALV-J infection in chickens. Pair-wise analysis was performed for the three breeds after the infection of ALV-J. The proteins such as RFX1, TAF10, and VH1 were differently expressed between three breeds. These DEPs involved in antigen processing and expression, acute myelogenous leukemia, and viral carcinogenesis can be used as potential immune markers after ALV-J infection of different genetic backgrounds. The screening of potential markers at protein level provides a strong theoretical research basis for disease resistance breeding in poultry.
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Affiliation(s)
- Fei Ye
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, China
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Foshan University, Guangdong, China
| | - Yan Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, China
| | - Qijian He
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, China
| | - Zhaoshuo Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, China
| | - Enyue Ma
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, China
| | - Shiliang Zhu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, China
| | - Heling Yu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, China
| | - Huadong Yin
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, China
| | - Xiaoling Zhao
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, China
| | - Diyan Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, China
| | - Hengyong Xu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, China
| | - Hua Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, China
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Foshan University, Guangdong, China
| | - Qing Zhu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, China
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11
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Chen X, Wang H, Fang X, Gao K, Fang C, Gu Y, Gao Y, Wang X, Huang H, Liang X, Yang Y. Identification of a novel epitope specific for Gp85 protein of avian leukosis virus subgroup K. Vet Immunol Immunopathol 2020; 230:110143. [PMID: 33129191 DOI: 10.1016/j.vetimm.2020.110143] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 08/10/2020] [Accepted: 10/15/2020] [Indexed: 10/23/2022]
Abstract
During the past two decades, avian leukosis virus (ALV) caused tremendous economic losses to poultry industry in China. ALV-K as a newly found subgroup in recent years, which made the control and eradication of ALV more difficult as they were originated from the recombination of different subgroups. To date, specific rapid detection methods refer to ALV-K are still missing. Gp85 is the main structural protein of the virus, which mediates the invasion of host cells by the virus and determinates the classification of subgroups. In this study, we prepared a monoclonal antibody (Mab) named Km3 against Gp85 of ALV-K. Immunofluorescence assay showed that Km3 specifically recognized the strains of ALV-K rather than the strains of ALV-A or ALV-J. To explain the subgroups specificity of Km3, the epitope cognized by the Mab was identified by Western blotting using 15 overlapping fragments spanning the Gp85. Finally, the peptide 129AFGPRSIDTLSDWSRPQ145 was identified as the minimal linear epitope recognized by Km3. Alignment of Gp85 from different subgroups showed that the epitope was highly conserved among ALV-K strains, which was quite different from that of the strains from ALV -A, -B and -J. In conclusion, the Mab Km3 may serve as a useful reagent for ALV-K detection and diagnosis in the future.
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Affiliation(s)
- Xueyang Chen
- College of Animal Science, Yangtze University, No.88, Jingmi Road, Jingzhou 434025, China
| | - Houkun Wang
- College of Animal Science, Yangtze University, No.88, Jingmi Road, Jingzhou 434025, China
| | - Xiaowei Fang
- College of Animal Science, Yangtze University, No.88, Jingmi Road, Jingzhou 434025, China
| | - Keli Gao
- College of Animal Science, Yangtze University, No.88, Jingmi Road, Jingzhou 434025, China
| | - Chun Fang
- College of Animal Science, Yangtze University, No.88, Jingmi Road, Jingzhou 434025, China
| | - Yufang Gu
- College of Animal Science, Yangtze University, No.88, Jingmi Road, Jingzhou 434025, China
| | - Yulong Gao
- Division of Avian Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 678, Haping Road, Harbin, China
| | - Xiaomei Wang
- Division of Avian Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 678, Haping Road, Harbin, China
| | - Hongsheng Huang
- Canadian Food Inspection Agency, Ottawa Laboratory (Fallowfield), 3851 Fallowfield Road, Ottawa, Ontario, K2H 8P9, Canada
| | - Xiongyan Liang
- College of Animal Science, Yangtze University, No.88, Jingmi Road, Jingzhou 434025, China.
| | - Yuying Yang
- College of Animal Science, Yangtze University, No.88, Jingmi Road, Jingzhou 434025, China.
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12
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Gp37 Regulates the Pathogenesis of Avian Leukosis Virus Subgroup J via Its C Terminus. J Virol 2020; 94:JVI.02180-19. [PMID: 32213616 DOI: 10.1128/jvi.02180-19] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Accepted: 03/17/2020] [Indexed: 12/14/2022] Open
Abstract
Different from other subgroups of avian leukosis viruses (ALVs), ALV-J is highly pathogenic. It is the main culprit causing myeloid leukemia and hemangioma in chickens. The distinctiveness of the env gene of ALV-J, with low homology to those of other ALVs, is linked to its unique pathogenesis, but the underlying mechanism remains unclear. Previous studies show that env of ALV-J can be grouped into three species based on the tyrosine motifs in the cytoplasmic domain (CTD) of Gp37, i.e., the inhibitory, bifunctional, and active groups. To explore whether the C terminus or the tyrosine motifs in the CTD of Gp37 affect the pathogenicity of ALV-J, a set of ALV-J infectious clones containing different C termini of Gp37 or the mutants at the tyrosine sites were tested in vitro and in vivo Viral growth kinetics indicated not only that ALV-J with active env is the fastest in replication and ALV-J with inhibitory env is the lowest but also that the tyrosine sites essentially affected the replication of ALV-J. Moreover, in vivo studies demonstrated that chickens infected by ALV-J with active or bifunctional env showed higher viremia, cloacal viral shedding, and viral tissue load than those infected by ALV-J with inhibitory env Notably, the chickens infected by ALV-J with active or bifunctional env showed significant loss of body weight compared with the control chickens. Taken together, these findings reveal that the C terminus of Gp37 plays a vital role in ALV-J pathogenesis, and change from inhibitory env to bifunctional or active env increases the pathogenesis of ALV-J.IMPORTANCE ALV-J can cause severe immunosuppression and myeloid leukemia in infected chickens. However, no vaccine or antiviral drug is available against ALV-J, and the mechanism for ALV-J pathogenesis needs to be elucidated. It is generally believed that gp85 and LTR of ALV contribute to its pathogenesis. Here, we found that the C terminus and the tyrosine motifs (YxxM, ITIM, and ITAM-like) in the CTD of Gp37 of ALV-J could affect the pathogenicity of ALV-J in vitro and in vivo The pathogenicity of ALV-J with Gp37 containing ITIM only was significantly less than ALV-J with Gp37 containing both YxxM and ITIM and ALV-J with Gp37 containing both YxxM and ITAM-like. This study highlights the vital role of the C terminus of Gp37 in the pathogenesis of ALV-J and thus provides a new perspective to elucidate the interaction between ALV-J and its host and a molecular basis to develop efficient strategies against ALV-J.
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13
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Mao Y, Su Q, Li J, Jiang T, Wang Y. Avian leukosis virus contamination in live vaccines: A retrospective investigation in China. Vet Microbiol 2020; 246:108712. [PMID: 32605749 DOI: 10.1016/j.vetmic.2020.108712] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/24/2020] [Accepted: 05/04/2020] [Indexed: 12/19/2022]
Abstract
Avian leukosis (AL) is one of the most pandemic immunosuppressive diseases and has been widely spread between 2006 and 2009 in China. The contamination of avian leukosis virus (ALV) in attenuated vaccine is considered as one of the possible transmission routes of this disease. Based on a retrospective survey of 918 batches of attenuated vaccine produced before 2010, three of them were identified as ALV-positive and corresponding ALV strains were successfully isolated from a live Fowlpox virus vaccine, a live Newcastle disease virus vaccine and a live Infectious Bursal Disease virus vaccine, respectively, and whole-genome sequencing showed that these three isolates shared the highest homology with ALV-A wild strains isolated in China (97.7%) over the same period, and the phylogenetic analysis based on their gp85 genes further confirmed that they belong to subgroup A. Meanwhile, although these three ALV-A strains isolated from contaminated vaccines shared a close genetic relationship, their U3 region of genome have a relatively low identity, suggesting that these three strains may have different sources. This study reminds us once again that the possibility of ALV infecting chickens through contaminated live vaccines, requiring us to carry out stricter exogenous virus monitoring in vaccines.
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Affiliation(s)
- Yaqing Mao
- China Institute of Veterinary Drug Control, Beijing 100081, China
| | - Qi Su
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, Shandong, China
| | - Junping Li
- China Institute of Veterinary Drug Control, Beijing 100081, China.
| | - Taozhen Jiang
- China Institute of Veterinary Drug Control, Beijing 100081, China.
| | - Yixin Wang
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, Shandong, China.
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14
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Cheng J, Xu Y, Zhou D, Liu K, Geng N, Lu J, Liu Y, Liu J. Novel carbon quantum dots can serve as an excellent adjuvant for the gp85 protein vaccine against avian leukosis virus subgroup J in chickens. Poult Sci 2020; 98:5315-5320. [PMID: 31198967 DOI: 10.3382/ps/pez313] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 05/18/2019] [Indexed: 12/22/2022] Open
Abstract
To evaluate whether carbon quantum dots (CQDs) can serve as an excellent adjuvant for the gp85 protein vaccine, this study produced recombinant gp85 protein against the avian leukosis virus subgroup J (ALV-J) in chickens. Functionalized CQDs were prepared and then linked to the recombinant gp85 protein. A total of 36 chickens were divided into 3 groups, namely, 2 experimental groups and 1 control group. Chickens from the experimental groups were inoculated twice intramuscularly with purified recombinant gp85 protein with CQDs as adjuvant or Freund's adjuvant emulsion at 14 and 21 D, whereas those from the control group were inoculated with an equivalent volume of PBS. At 35 D, the chickens were challenged with a 102.4 50% tissue culture infective dose of ALV-J. Blood samples were collected from each chicken at weekly intervals for serum antibody and viremia analyses. Results indicated that immunization with gp85-CQDs or gp85-Freund's adjuvant induced the inoculated chickens to produce positive serum antibodies (sample-to-positive ratio >0.6) at the 3rd week and persisted over 9 wk. Antibody levels in the gp85-CQDs group were higher than those in the gp85-Freund's adjuvant group. Differences were significant at 21 D (P < 0.05) and extremely significant from 28 D to 70 D (P < 0.01). Additionally, results of viremia showed higher protection in the gp85-CQDs group than in the Freund's adjuvant group. These findings highlighted the potential of CQDs as excellent candidate nanovehicles for vaccine delivery.
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Affiliation(s)
- Jia Cheng
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, PR China
| | - Yuliang Xu
- College of Veterinary Medicine, Shandong Agricultural University, Tai`an 271018, PR China
| | - Dong Zhou
- College of Veterinary Medicine, Northwest Agriculture and Forestry University, Yangling 712100, China
| | - Kangping Liu
- Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai`an 271018, PR China
| | - Na Geng
- College of Veterinary Medicine, Shandong Agricultural University, Tai`an 271018, PR China
| | - Jianwei Lu
- Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai`an 271018, PR China
| | - Yongxia Liu
- Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai`an 271018, PR China
| | - Jianzhu Liu
- College of Veterinary Medicine, Shandong Agricultural University, Tai`an 271018, PR China
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15
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Zhang Y, Su Q, Zhang Z, Cui Z, Chang S, Zhao P. Molecular characteristics of the re-emerged avian leukosis virus in China, 2018-2019. Transbound Emerg Dis 2020; 67:1141-1151. [PMID: 31785180 DOI: 10.1111/tbed.13440] [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: 10/14/2019] [Revised: 11/12/2019] [Accepted: 11/20/2019] [Indexed: 11/28/2022]
Abstract
Since early 2018, avian leukosis virus (ALV) has re-emerged throughout six provinces in Northeast and East of China and caused huge economic losses. In different farms, there are significant differences in clinical symptoms, including morbidity, mortality and location of tumours, on affected animals, which implies that the present strains may have different origins and molecular characteristics. In this study, a systematic epidemiological investigation was conducted in 21 farms in six provinces. Results showed that the virus strains present in this outbreak are highly consistent but carry different mutations. All the strains shared 97.0%-99.0% identity with each other and were highly similar to the GD14J2 strain isolated previously, while different insertion fragments can be found in the env gene of different strains, suggesting that the strains of ALV in this outbreak may have the same ancestors but have gone through different evolutionary trajectories. This study demonstrated that these viruses may point to multiple sources of infection, and all should be identified and taken seriously in the formulation of control plans.
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Affiliation(s)
- Yawen Zhang
- College of Veterinary Medicine, Shandong Agricultural University, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, China
| | - Qi Su
- College of Veterinary Medicine, Shandong Agricultural University, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, China
| | - Zhihui Zhang
- College of Veterinary Medicine, Shandong Agricultural University, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, China
| | - Zhizhong Cui
- College of Veterinary Medicine, Shandong Agricultural University, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, China
| | - Shuang Chang
- College of Veterinary Medicine, Shandong Agricultural University, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, China
| | - Peng Zhao
- College of Veterinary Medicine, Shandong Agricultural University, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, China
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16
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Cui S, Li Y, Wang Y, Cui Z, Chang S, Zhao P. Joint treatment with azidothymidine and antiserum for eradication of avian leukosis virus subgroup a contamination in vaccine virus seeds. Poult Sci 2019; 98:629-633. [DOI: 10.3382/ps/pey257] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 11/30/2018] [Indexed: 11/20/2022] Open
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17
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Zhang Y, Guan X, Chen Z, Cao D, Kang Z, Shen Q, Lei Q, Li F, Li H, Leghari MF, Wang Y, Qi X, Wang X, Gao Y. The high conserved cellular receptors of avian leukosis virus subgroup J in Chinese local chickens contributes to its wide host range. Poult Sci 2019; 97:4187-4192. [PMID: 30107614 DOI: 10.3382/ps/pey331] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 08/06/2018] [Indexed: 02/05/2023] Open
Abstract
Avian leukosis virus (ALV) is a tumor-inducing virus that spreads among most chicken species, causing serious financial losses for the poultry industry. Subgroup J avian leukosis virus (ALV-J) is a recombinant exogenous ALV, which shows more extensive host range in comparison with other subgroups, especially in Chinese local chickens. To identify the relationship between ALV-J host range and the polymorphism of its cellular receptors, we performed a wide range epidemiological investigation of current ALV-J infection in Chinese local chickens, and discovered that all the 18 local chicken breeds being investigated from main local chicken breeding provinces were ALV-J positive. Furthermore, we cloned ALV-J cellular receptor genes of chNHE1 and chANXA2 of these 18 chicken breeds. Sequence alignment demonstrated that despite several regular mutations at the nucleotide level, there were no corresponding amino acid mutations for either chNHE1 gene or chANXA2 gene. Additionally, virus entry assay indicated that the level of viral enter into cells is stable among different chicken breeds. Results of this study indicated that the wide host range of ALV-J in Chinese local chickens was partially due to the high conservatism of its cellular receptors, and also provide target sites for drug design of resistance to ALV-J infection.
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Affiliation(s)
- Yao Zhang
- Division of Avian Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, Heilongjiang Province, PR China
| | - Xiaolu Guan
- Division of Avian Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, Heilongjiang Province, PR China
| | - Zhiwu Chen
- Guangxi Jinling Husbandry Group CO., LTD, Lu Ping Country, Nanning 530000, Guangxi Zhuang Autonomous Region, PR China
| | - Dingguo Cao
- Institute of Poultry Science, Shandong Academy of Agricultural Science, Jinan, Shandong 250100, China
| | - Zhaofeng Kang
- Institute of Animal Husbandry and Veterinary, Jiangxi Academy of Agricultural Science, Nanchang 330200, China
| | - Qiancheng Shen
- Guangxi Jinling Husbandry Group CO., LTD, Lu Ping Country, Nanning 530000, Guangxi Zhuang Autonomous Region, PR China
| | - Qiuxia Lei
- Institute of Poultry Science, Shandong Academy of Agricultural Science, Jinan, Shandong 250100, China
| | - Fuwei Li
- Institute of Poultry Science, Shandong Academy of Agricultural Science, Jinan, Shandong 250100, China
| | - Haiqin Li
- Institute of Animal Husbandry and Veterinary, Jiangxi Academy of Agricultural Science, Nanchang 330200, China
| | - Muhammad Farooque Leghari
- Division of Avian Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, Heilongjiang Province, PR China
| | - Yongqiang Wang
- Division of Avian Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, Heilongjiang Province, PR China
| | - Xiaole Qi
- Division of Avian Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, Heilongjiang Province, PR China
| | - Xiaomei Wang
- Division of Avian Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, Heilongjiang Province, PR China
| | - Yulong Gao
- Division of Avian Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, Heilongjiang Province, PR China
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18
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Li J, Meng F, Li W, Wang Y, Chang S, Zhao P, Cui Z. Characterization of avian leukosis virus subgroup J isolated between 1999 and 2013 in China. Poult Sci 2018; 97:3532-3539. [PMID: 29924363 DOI: 10.3382/ps/pey241] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Accepted: 05/25/2018] [Indexed: 01/17/2023] Open
Abstract
Avian leukosis virus subgroup J (ALV-J) has successively infected white feather chickens, layer hens, cultivated yellow chickens, and indigenous chickens; infection rates and tumorigenicity have attracted increasingly extensive attention in China. To clarify the correlation of the epidemiological phenomenon of ALV-J with the evolution of envelope protein gp85, 140 strains of ALV-J isolated from chickens with different genetic backgrounds from 1999 to 2013 were compared. The homology of the gp85 protein and genetic genealogical relationships between 140 strains of ALV-J and the prototype strain HPRS-103, as well as between the same ALV-J strains and 8 American isolates, were analyzed and compared. The results showed that there was no significant difference in the variation range of homology of the gp85 protein between the prototype HPRS-103 and ALV-J isolates from different genetic backgrounds and different years. However, genetic pedigree analysis showed that virus strains that isolated from the same type of chickens remained close to each other on the phylogenetic tree, which means that there was a correlation between the genetic background of infected chickens and virus strains. Further analysis of amino acid sequences also found similar results and revealed that unique amino acid sites were formed in chickens with different genetic backgrounds, which proved that ALV-J could adapt to the new host through amino acid variation. Genetic sequence phylogenetic tree analysis was more representative than sequence homology comparisons for assessing ALV-J correlations. These conclusions contributed to the control and prevention of ALV infection. ALV-J is still prevalent in Chinese indigenous chickens, more attentions should be given to fulfill the purification.
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Affiliation(s)
- Jianliang Li
- College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, China, 271018.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, China, 271018.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, Shandong, China, 271018
| | - Fanfeng Meng
- College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, China, 271018.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, China, 271018.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, Shandong, China, 271018
| | - Weihua Li
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China, 266033
| | - Yixin Wang
- College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, China, 271018.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, China, 271018.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, Shandong, China, 271018
| | - Shuang Chang
- College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, China, 271018.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, China, 271018.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, Shandong, China, 271018
| | - Peng Zhao
- College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, China, 271018.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, China, 271018.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, Shandong, China, 271018
| | - Zhizhong Cui
- College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, China, 271018.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, Shandong, China, 271018.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, Shandong, China, 271018
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Meng F, Li Q, Zhang Y, Cui Z, Chang S, Zhao P. Isolation and characterization of subgroup J Avian Leukosis virus associated with hemangioma in commercial Hy-Line chickens. Poult Sci 2018; 97:2667-2674. [PMID: 29788333 DOI: 10.3382/ps/pey121] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 05/15/2018] [Indexed: 11/20/2022] Open
Abstract
There was an outbreak of hemangioma associated with avian leukosis virus subgroup J (ALV-J) between 2006 and 2010 in China in commercial layer chickens. Recently, severe hemangiomas broke out in Hy-Line layer chickens on a poultry farm in 2017 where ALV was eradicated earlier. Six isolates of ALV-J, named SDAU1701-SDAU1706, were characterized by virus isolation and sequence analysis of the complete proviral genomes. Avian leukosis virus subgroup J was identified by an immunofluorescence assay with monoclonal antibody JE9, whereas Marek's disease virus or reticuloendotheliosis virus was not detected. Sequence analysis of the complete proviral genome revealed that there was 96.0-99.6% identity between each other and had a homology of 94.6-96.0% when compared with the reference strain. The six isolates formed one distinct lineage separate from the reference sequences in a phylogenetic-tree, which suggested that there were several genetic differences between these groups. Homology analysis of the env, pol, and gag genes of the six isolates showed that the env gene was more variable, especially the gp85 protein, which shared only 88.2-91.9% identity with the reference strains. Sequence comparisons of the gp85 protein indicated that 19 sites were different from those in the NX0101 and HPRS-103 strains inducing myeloid leukosis; among our strains, five mutations were identical to those in the viruses causing hemangioma. Four other distinctive mutations were detected in our six isolates. This study reminds us that the surveillance of viral eradication should be conducted continuously on a farm where ALVs were eradicated. To prevent the prevalence of ALVs, more attention should be paid to daily monitoring.
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Affiliation(s)
- Fanfeng Meng
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, Shandong, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, Shandong, China
| | - Qiuchen Li
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, Shandong, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, Shandong, China
| | - Yubiao Zhang
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, Shandong, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, Shandong, China
| | - Zhizhong Cui
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, Shandong, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, Shandong, China
| | - Shuang Chang
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, Shandong, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, Shandong, China
| | - Peng Zhao
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, Shandong, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, Shandong, China
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Smith LP, Petheridge L, Nair V, Wood A, Welchman D. Avian leukosis virus subgroup J-associated myelocytoma in a hobby chicken. Vet Rec 2018; 182:23. [DOI: 10.1136/vr.104626] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 09/01/2017] [Accepted: 10/04/2017] [Indexed: 11/03/2022]
Affiliation(s)
- Lorraine P Smith
- Avian Oncogenic Viruses Group; Pirbright Institute; Pirbright UK
| | | | - Venugopal Nair
- Avian Oncogenic Viruses Group; Pirbright Institute; Pirbright UK
| | - Alisdair Wood
- International Research Centre, Animal and Plant Health Agency (APHA); Penicuik UK
| | - David Welchman
- Surveillance Intelligence Unit; Animal and Plant Health Agency (APHA); Winchester UK
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21
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Diversity and evolution analysis of glycoprotein GP85 from avian leukosis virus subgroup J isolates from chickens of different genetic backgrounds during 1989-2016: Coexistence of five extremely different clusters. Arch Virol 2017; 163:377-389. [DOI: 10.1007/s00705-017-3601-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 10/08/2017] [Indexed: 10/18/2022]
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22
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Li Z, Luo Q, Xu H, Zheng M, Abdalla BA, Feng M, Cai B, Zhang X, Nie Q, Zhang X. MiR-34b-5p Suppresses Melanoma Differentiation-Associated Gene 5 ( MDA5) Signaling Pathway to Promote Avian Leukosis Virus Subgroup J (ALV-J)-Infected Cells Proliferaction and ALV-J Replication. Front Cell Infect Microbiol 2017; 7:17. [PMID: 28194372 PMCID: PMC5276853 DOI: 10.3389/fcimb.2017.00017] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 01/13/2017] [Indexed: 02/06/2023] Open
Abstract
Avian leukosis virus subgroup J (ALV-J) is an oncogenic retrovirus that has a similar replication cycle to multiple viruses and therefore can be used as a model system for viral entry into host cells. However, there are few reports on the genes or microRNAs (miRNAs) that are responsible for the replication of ALV-J. Our previous miRNA and RNA sequencing data showed that the expression of miR-34b-5p was significantly upregulated in ALV-J-infected chicken spleens compared to non-infected chicken spleens, but melanoma differentiation-associated gene 5 (MDA5) had the opposite expression pattern. In this study, a dual-luciferase reporter assay showed that MDA5 is a direct target of miR-34b-5p. In vitro, overexpression of miR-34b-5p accelerated the proliferation of ALV-J-infected cells by inducing the progression from G2 to S phase and it promoted cell migration. Ectopic expression of MDA5 inhibited ALV-J-infected cell proliferation, the cell cycle and cell migration, and knockdown of MDA5 promoted proliferation, the cell cycle and migration. In addition, during ALV-J infections, MDA5 can detect virus invasion and it triggers the MDA5 signaling pathway. MDA5 overexpression can activate the MDA5 signaling pathway, and thus it can inhibit the mRNA and protein expression of the ALV-J env gene and it can suppress virion secretion. In contrast, in response to the knockdown of MDA5 by small interfering RNA (siRNA) or an miR-34b-5p mimic, genes in the MDA5 signaling pathway were significantly downregulated (P < 0.05), but the mRNA and protein expression of ALV-J env and the sample-to-positive ratio of virion in the supernatants were increased. This indicates that miR-34b-5p is able to trigger the MDA5 signaling pathway and affect ALV-J infections. Together, these results suggest that miR-34b-5p targets MDA5 to accelerate the proliferation and migration of ALV-J-infected cells, and it promotes ALV-J replication, via the MDA5 signaling pathway.
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Affiliation(s)
- Zhenhui Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and the Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Qingbin Luo
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and the Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Haiping Xu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and the Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Ming Zheng
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and the Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Bahareldin Ali Abdalla
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and the Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Min Feng
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and the Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Bolin Cai
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and the Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Xiaocui Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and the Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Qinghua Nie
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and the Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Xiquan Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and the Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
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Meng F, Dong X, Hu T, Chang S, Fan J, Zhao P, Cui Z. A deep sequencing reveals significant diversity among dominant variants and evolutionary dynamics of avian leukosis viruses in two infectious ecosystems. BMC Vet Res 2016; 12:287. [PMID: 27993149 PMCID: PMC5168851 DOI: 10.1186/s12917-016-0902-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 11/29/2016] [Indexed: 11/22/2022] Open
Abstract
Background As a typical retrovirus, the evolution of Avian leukosis virus subgroup J (ALV-J) in different infectious ecosystems is not characterized, what we know is there are a cloud of diverse variants, namely quasispecies with considerable genetic diversity. This study is to explore the selection of infectious ecosystems on dominant variants and their evolutionary dynamics of ALV-J between DF1 cells and specific-pathogen-free (SPF) chickens. High-throughput sequencing platforms provide an approach for detecting quasispecies diversity more fully. Results An average of about 20,000 valid reads were obtained from two variable regions of gp85 gene and LTR-U3 region from each sample in different infectious ecosystems. The top 10 dominant variants among ALV-J from chicken plasmas, DF1 cells and liver tumor were completely different from each other. Also there was a difference of shannon entropy and global selection pressure values (ω) in different infectious ecosystems. In the plasmas of two chickens, a large portion of quasispecies contained a 3-peptides “LSD” repeat insertion that was only less than 0.01% in DF1 cell culture supernatants. In parallel studies, the LTR-U3 region of ALV-J from the chicken plasmas demonstrated more variants with mutations in their transcription regulatory elements than those from DF1 cells. Conclusions Our data taken together suggest that the molecular epidemiology based on isolated ALV-J in cell culture may not represent the true evolution of virus in chicken flocks in the field. The biological significance of the “LSD” insert and mutations in LTR-U3 needs to be further studied. Electronic supplementary material The online version of this article (doi:10.1186/s12917-016-0902-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Fanfeng Meng
- College of Veterinary Medicine, Shandong Agricultural University, Taian, 271018, China
| | - Xuan Dong
- College of Veterinary Medicine, Shandong Agricultural University, Taian, 271018, China
| | - Tao Hu
- Institute of Pathogen Biology, Taishan Medical College, Taian, Shandong, China
| | - Shuang Chang
- College of Veterinary Medicine, Shandong Agricultural University, Taian, 271018, China
| | - Jianhua Fan
- Poultry lnstitute, Chinese Academy of Agricultural Sciences, Yangzhou, Jiangsu, China
| | - Peng Zhao
- College of Veterinary Medicine, Shandong Agricultural University, Taian, 271018, China.
| | - Zhizhong Cui
- College of Veterinary Medicine, Shandong Agricultural University, Taian, 271018, China.
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24
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Cheng J, Wen S, Wang S, Hao P, Cheng Z, Liu Y, Zhao P, Liu J. gp85 protein vaccine adjuvanted with silica nanoparticles against ALV-J in chickens. Vaccine 2016; 35:293-298. [PMID: 27912987 DOI: 10.1016/j.vaccine.2016.11.077] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 11/16/2016] [Accepted: 11/18/2016] [Indexed: 11/27/2022]
Abstract
This study focused on the effect of silica nanoparticles as adjuvant for vaccine applications comprised of gp85, a dominating structural protein of J Subgroup Avian Leukosis Virus (ALV-J), and which was evaluated by comparing with the responsiveness induced by that emulsified in Freund adjuvant. Thirty-six chickens were inoculated twice with gp85 adjuvanted with the silica nanoparticles or Freund's adjuvant at the 2nd and 3rd week old. Two weeks later, the inoculated chickens were challenged with a 102.2 50% tissue culture infective dose (TCID50) of ALV-J. The blood samples were collected weekly to detect the serum antibodies and viremia. Results showed that positive serum antibodies (S/P value>0.6) against gp85 emerged at the third week in the inoculated chickens, while the antibodies level persisted longer in silica nanoparticles adjuvanted-group to Freund's adjuvanted-group. Furthermore, viremia in silica nanoparticles adjuvanted-group was recovered more quickly compared with Freund's adjuvanted-group. Hence our study revealed that silica nanoparticles can effectively improve the protection of gp85 vaccine against ALV-J and present a better performance than Freund's adjuvant.
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Affiliation(s)
- Jia Cheng
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, China
| | - Shiyong Wen
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Huhhot 011018, China; Dezhou Municipal Finance Bureau, Dezhou 253014, China
| | - Shenghua Wang
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, China
| | - Pan Hao
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, China
| | - Ziqiang Cheng
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, China
| | - Yongxia Liu
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, China
| | - Peng Zhao
- Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, China.
| | - Jianzhu Liu
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, China.
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Feng M, Tan Y, Dai M, Li Y, Xie T, Li H, Shi M, Zhang X. Endogenous Retrovirus ev21 Dose Not Recombine with ALV-J and Induces the Expression of ISGs in the Host. Front Cell Infect Microbiol 2016; 6:140. [PMID: 27826543 PMCID: PMC5078265 DOI: 10.3389/fcimb.2016.00140] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 10/12/2016] [Indexed: 12/26/2022] Open
Abstract
Avian leukosis virus subgroup J (ALV-J) infection can cause tumors and immunosuppression. Endogenous viruses integrate into host genomes and can recombine with exogenous avian leukosis virus (ALV). In this study, we analyzed the interaction of endogenous retrovirus 21 (ev21) with the ALV-J in late-feathering Chinese yellow chicken. Two ALV-J strains M180 and K243 were isolated from late-feathering and fast-feathering Chinese yellow chicken flocks, respectively. The env gene of the two strains showed 94.2-94.8% nucleotide identity with reference ALV-J strains. Compared with the env gene and the LTR of ev21 and M180, the nucleotide identity of LTR was 69.7% and env gene was 58.4%, respectively, especially the amino acid identity of env gene as low as 14.2%. Phylogenetic analysis of the nucleotide sequence of the env gene and the 3'LTR showed that M180 was closely related to ALV-J, and was located in a distinct group with ev21 in the phylogenetic tree. Using co-immunoprecipitation (co-IP), we next demonstrate that the envelope protein of ev21 does not interact with the M180 envelope protein. We further show that the envelope protein of ev21 cannot activate ALV-J LTR promoter activity using luciferase-reporter assays. qPCR and western blot analysis revealed that envelope protein of endogenous ev21 can facilitate the expression of PKR at 6h post ALV-J infection (hpi) and facilitate the expression of ISG12 and CH25H at 24 hpi. However, the expression of the env gene of M180 strain was not significantly at 6 and 24 hpi. We conclude that there is no evidence of recombination between endogenous retrovirus ev21 and ALV-J strain M180 in late-feathering Chinese yellow chicken, and envelope protein of ev21 can affect the expression of host ISGs, but appears not to influence the replication of ALV-J strain M180. This is the first report of interaction among the endogenous retrovirus ev21, ALV-J and the late-feathering chicken.
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Affiliation(s)
- Min Feng
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Yan Tan
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Manman Dai
- Department of Preventive Veterinary, College of Veterinary Medicine, South China Agricultural University Guangzhou, China
| | - Yuanfang Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Tingting Xie
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Hongmei Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
| | - Meiqing Shi
- Division of Immunology, Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland College Park, MD, USA
| | - Xiquan Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural UniversityGuangzhou, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhou, China
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Li Z, Chen B, Feng M, Ouyang H, Zheng M, Ye Q, Nie Q, Zhang X. MicroRNA-23b Promotes Avian Leukosis Virus Subgroup J (ALV-J) Replication by Targeting IRF1. Sci Rep 2015; 5:10294. [PMID: 25980475 PMCID: PMC4434839 DOI: 10.1038/srep10294] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 04/08/2015] [Indexed: 12/31/2022] Open
Abstract
Avian leukosis virus subgroup J (ALV-J) can cause several different leukemia-like proliferative diseases in the hemopoietic system of chickens. Here, we investigated the transcriptome profiles and miRNA expression profiles of ALV-J-infected and uninfected chicken spleens to identify the genes and miRNAs related to ALV-J invasion. In total, 252 genes and 167 miRNAs were differentially expressed in ALV-J-infected spleens compared to control uninfected spleens. miR-23b expression was up-regulated in ALV-J-infected spleens compared with the control spleens, and transcriptome analysis revealed that the expression of interferon regulatory factor 1 (IRF1) was down-regulated in ALV-J-infected spleens compared to uninfected spleens. A dual-luciferase reporter assay showed that IRF1 was a direct target of miR-23b. miR-23b overexpression significantly (P = 0.0022) decreased IRF1 mRNA levels and repressed IRF1-3′-UTR reporter activity. In vitro experiments revealed that miR-23b overexpression strengthened ALV-J replication, whereas miR-23b loss of function inhibited ALV-J replication. IRF1 overexpression inhibited ALV-J replication, and IRF1 knockdown enhanced ALV-J replication. Moreover, IRF1 overexpression significantly (P = 0.0014) increased IFN-β expression. In conclusion, these results suggested that miR-23b may play an important role in ALV-J replication by targeting IRF1.
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Affiliation(s)
- Zhenhui Li
- 1] Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China [2] Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China
| | - Biao Chen
- 1] Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China [2] Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China
| | - Min Feng
- 1] Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China [2] Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China
| | - Hongjia Ouyang
- 1] Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China [2] Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China
| | - Ming Zheng
- 1] Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China [2] Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China
| | - Qiao Ye
- 1] Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China [2] Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China
| | - Qinghua Nie
- 1] Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China [2] Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China
| | - Xiquan Zhang
- 1] Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China [2] Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China
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Ye J, Fan Z, Shang J, Tian X, Yang J, Chen H, Shao H, Qin A. ALV-J GP37 molecular analysis reveals novel virus-adapted sites and three tyrosine-based Env species. PLoS One 2015; 10:e0122887. [PMID: 25849207 PMCID: PMC4388560 DOI: 10.1371/journal.pone.0122887] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 02/24/2015] [Indexed: 02/05/2023] Open
Abstract
Compared to other avian leukosis viruses (ALV), ALV-J primarily induces myeloid leukemia and hemangioma and causes significant economic loss for the poultry industry. The ALV-J Env protein is hypothesized to be related to its unique pathogenesis. However, the molecular determinants of Env for ALV-J pathogenesis are unclear. In this study, we compared and analyzed GP37 of ALV-J Env and the EAV-HP sequence, which has high homology to that of ALV-J Env. Phylogenetic analysis revealed five groups of ALV-J GP37 and two novel ALV-J Envs with endemic GP85 and EAV-HP-like GP37. Furthermore, at least 15 virus-adapted mutations were detected in GP37 compared to the EAV-HP sequence. Further analysis demonstrated that three tyrosine-based motifs (YxxM, ITIM (immune tyrosine-based inhibitory motif) and ITAM-like (immune tyrosine-based active motif like)) associated with immune disease and oncogenesis were found in the cytoplasmic tail of GP37. Based on the potential function and distribution of these motifs in GP37, ALV-J Env was grouped into three species, inhibitory Env, bifunctional Env and active Env. Accordingly, 36.91%, 61.74% and 1.34% of ALV-J Env sequences from GenBank are classified as inhibitory, bifunctional and active Env, respectively. Additionally, the Env of the ALV-J prototype strain, HPRS-103, and 17 of 18 EAV-HP sequences belong to the inhibitory Env. And models for signal transduction of the three ALV-J Env species were predicted. Our findings and models provide novel insights for identifying the roles and molecular mechanism of ALV-J Env in the unique pathogenesis of ALV-J.
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Affiliation(s)
- Jianqiang Ye
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, P. R. China
- * E-mail: (JQY); (AQ)
| | - Zhonglei Fan
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, P. R. China
| | - Jianjun Shang
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, P. R. China
| | - Xiaoyan Tian
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, P. R. China
| | - Jialiang Yang
- Institute of Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, NY, United States of America
| | - Hongjun Chen
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, P. R. China
| | - Hongxia Shao
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, P. R. China
| | - Aijian Qin
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, P. R. China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, P. R. China
- * E-mail: (JQY); (AQ)
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Identification of a novel B-cell epitope specific for avian leukosis virus subgroup J gp85 protein. Arch Virol 2015; 160:995-1004. [PMID: 25655260 DOI: 10.1007/s00705-014-2318-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 12/14/2014] [Indexed: 10/24/2022]
Abstract
Avian leukosis virus subgroup J (ALV-J) is an avian oncogenic retrovirus that has caused severe economic losses in China. Gp85 protein is the main envelope protein and the most variable structural protein of ALV-J. It is also involved in virus neutralization. In this study, a specific monoclonal antibody, 4A3, was produced against the ALV-J gp85 protein. Immunofluorescence assays showed that 4A3 could react with different strains of ALV-J, including the British prototype isolate HPRS103, the American strains, an early Chinese broiler isolate, and layer isolates. A linear epitope on the gp85 protein was identified using a series of partially overlapping fragments spanning the gp85-encoding gene and subjecting them to western blot analysis. The results indicated that (134)AEAELRDFI(142) was the minimal linear epitope that could be recognized by mAb 4A3. Enzyme-linked immunosorbent assay (ELISA) revealed that chicken anti-ALV-J sera and mouse anti-ALV-J gp85 sera could also recognize the minimal linear epitope. Alignment analysis of amino acid sequences indicated that the epitope was highly conserved among 34 ALV-J strains. Furthermore, the epitope was not conserved among subgroup A and B of avian leukosis virus (ALV). Taken together, the mAb and the identified epitope may provide valuable tools for the development of new diagnostic methods for ALV-J.
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Genetic diversity and phylogenetic analysis of Tams1 of Theileria annulata isolates from three continents between 2000 and 2012. Cent Eur J Immunol 2014; 39:476-84. [PMID: 26155166 PMCID: PMC4439959 DOI: 10.5114/ceji.2014.47732] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 11/24/2014] [Indexed: 11/17/2022] Open
Abstract
Theileria annulata, which is part of the Theileria sergenti/Theileria buffeli/Theileria orientalis group, preferentially infects cattle and results in high mortality and morbidity in the Mediterranean, Middle East, and Central Asia. The polypeptide Tams1 is an immunodominant major merozoite piroplasm surface antigen of T. annulata that could be used as a marker for epidemiological studies and phylogenetic analysis. In the present study, a total of 155 Tams1 sequences were investigated for genetic diversity and phylogenetic relationships through phylogenetic analysis. Results showed that the Tams1 sequences were divided into two major groups and that distribution for some isolates also exhibited geographic specificity. As targeting polymorphic genes for parasite detection may result in underestimation of infection, polymerase chain reaction (PCR) assay using two different probes targeting tams-1 genes of these two groups can be more credible. In addition, the direction of the spread of the disease was discovered to be from the Mediterranean or the tropical zone to the Eurasian peninsula, Middle East, Southern Asia, and Africa, particularly for Group 2. A similar occurrence was also found between the Ms1 gene of Theileria lestoquardi and the Tams1 gene of T. annulata, which explains cross-immunogenicity to a certain extent. However, no potential glycosylation site in the Tams1 of T. annulata was found in this study, which illustrated that instead of N-glycosylation, other modifications have more significant effects on the immunogenicity of the Tams1 protein.
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Liu Y, Ma T, Liu J, Zhao X, Cheng Z, Guo H, Wang S, Xu R. Bioinformatics analysis and genetic diversity of the poliovirus. J Med Microbiol 2014; 63:1724-1731. [PMID: 25261065 DOI: 10.1099/jmm.0.081992-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Poliomyelitis, a disease which can manifest as muscle paralysis, is caused by the poliovirus, which is a human enterovirus and member of the family Picornaviridae that usually transmits by the faecal-oral route. The viruses of the OPV (oral poliovirus attenuated-live vaccine) strains can mutate in the human intestine during replication and some of these mutations can lead to the recovery of serious neurovirulence. Informatics research of the poliovirus genome can be used to explain further the characteristics of this virus. In this study, sequences from 100 poliovirus isolates were acquired from GenBank. To determine the evolutionary relationship between the strains, we compared and analysed the sequences of the complete poliovirus genome and the VP1 region. The reconstructed phylogenetic trees for the complete sequences and the VP1 sequences were both divided into two branches, indicating that the genetic relationships of the whole poliovirus genome and the VP1 sequences are very similar. This branching indicates that the virulence and pathogenicity of poliomyelitis may be associated with the VP1 region. Sequence alignment of the VP1 region revealed numerous mutation sites in which mutation rates of >30 % were detected. In a group of strains recorded in the USA, mutation sites and mutation types were the same and this may be associated with their distribution in the evolutionary tree and their genetic relationship. In conclusion, the genetic evolutionary relationships of poliovirus isolate sequences are determined to a great extent by the VP1 protein, and poliovirus strains located on the same branch of the phylogenetic tree contain the same mutation spots and mutation types. Hence, the genetic characteristics of the VP1 region in the poliovirus genome should be analysed to identify the transmission route of poliovirus and provide the basis of viral immunity development.
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Affiliation(s)
- Yanhan Liu
- College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, PR China
| | - Tengfei Ma
- College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, PR China
| | - Jianzhu Liu
- College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, PR China
| | - Xiaona Zhao
- College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, PR China
| | - Ziqiang Cheng
- College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, PR China
| | - Huijun Guo
- College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, PR China
| | - Shujing Wang
- College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, PR China
| | - Ruixue Xu
- College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, PR China
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Zhao P, Dong X, Cui Z. Isolation, identification, and gp85 characterization of a subgroup A avian leukosis virus from a contaminated live Newcastle Disease virus vaccine, first report in China. Poult Sci 2014; 93:2168-74. [DOI: 10.3382/ps.2014-03963] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Liposomes containing recombinant gp85 protein vaccine against ALV-J in chickens. Vaccine 2014; 32:2452-6. [PMID: 24625339 DOI: 10.1016/j.vaccine.2014.02.091] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 02/16/2014] [Accepted: 02/25/2014] [Indexed: 11/21/2022]
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33
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Jiang L, Zeng X, Hua Y, Gao Q, Fan Z, Chai H, Wang Q, Qi X, Wang Y, Gao H, Gao Y, Wang X. Genetic diversity and phylogenetic analysis of glycoprotein gp85 of avian leukosis virus subgroup J wild-bird isolates from Northeast China. Arch Virol 2014; 159:1821-6. [DOI: 10.1007/s00705-014-2004-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 01/22/2014] [Indexed: 10/25/2022]
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Dou W, Li H, Cheng Z, Zhao P, Liu J, Cui Z, Liu H, Jing W, Guo H. Maternal antibody induced by recombinant gp85 protein vaccine adjuvanted with CpG-ODN protects against ALV-J early infection in chickens. Vaccine 2013; 31:6144-9. [PMID: 23831319 DOI: 10.1016/j.vaccine.2013.06.058] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 06/08/2013] [Accepted: 06/19/2013] [Indexed: 02/01/2023]
Abstract
In this study, the efficacy of a recombinant protein vaccine encoding the gp85 gene from the subgroup J avian leukosis virus (ALV-J) co-administered with cytosine-phosphate-guanine oligodeoxynucleotide (CpG-ODN) or Freund's adjuvants was investigated for the protection against early ALV-J infection in chickens. The gp85 gene from ALV-J was amplified using polymerase chain reaction (PCR), and the recombinant protein was expressed in Escherichia coli. The purified recombinant protein was injected intramuscularly into the breeder hens along with CpG-ODN or Freund's adjuvants, and the antibodies in the serum were assayed regularly post inoculation. The fertilized eggs from the vaccinated hens were hatched, the hatched chickens were challenged with 10(2.2) 50% tissue culture infective dose (TCID50) ALV-J on 1 day, and the maternal antibodies in the hatched chickens were examined regularly before and after the challenge. The viremia was determined weekly, and a histopathological analysis of the immunosuppressive lesions was performed. The results suggest that the gp85 recombinant protein was successfully prepared and was inoculated with CpG-ODN adjuvant into breeder hens to induce serological antibody against ALV-J in the hens and in the hatched chickens. The positive maternal antibodies in the hatched chickens provided effective protection for most chickens against viremia and dramatically decreased the number of immunosuppressive lesions; these protective effects were better than those of the gp85 recombinant protein plus Freund's adjuvant. The data will provide a scientific basis for the application of the ALV-J subunit vaccine to control ALV-J infection in chicken flocks.
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Affiliation(s)
- Wenwen Dou
- Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, PR China
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35
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Li Y, Liu X, Liu H, Xu C, Liao Y, Wu X, Cao W, Liao M. Isolation, identification, and phylogenetic analysis of two avian leukosis virus subgroup J strains associated with hemangioma and myeloid leukosis. Vet Microbiol 2013; 166:356-64. [PMID: 23876931 DOI: 10.1016/j.vetmic.2013.06.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 05/31/2013] [Accepted: 06/10/2013] [Indexed: 11/29/2022]
Abstract
Cases of myeloid leukosis and hemangioma associated with avian leukosis virus subgroup J (ALV-J) are becoming more frequent in China in commercial layer chickens and breeders of egg-type chickens. In this study, two strains of ALV-J (SCAU11-H and SCAU11-XG) associated with hemangioma and myelocytoma were isolated from commercial broiler breeder animals in 2011. Their full-length proviral sequences were analyzed, revealing several unique genetic differences between the two isolates, and suggesting that the two viruses were derived from two distinct lineages. Strain SCAU11-H showed high sequence homology to early Chinese isolates associated with hemangioma, while strain SCAU11-XG was genetically closer to the prototype strain, HPRS-103. The complete genomic nucleotide sequences of SCAU11-H and SCAU11-XG were 7471 bp and 7727 bp in length, respectively. They shared 94.8% identity with each other, and had 94.0-96.8% nucleotide identity to ALV-J reference isolates. Homology analysis of the env, pol, and gag genes of the two isolates and other references strains showed that the gag and pol genes of the two viruses were more conserved than the env gene. In addition, the two isolates had significant deletions and substitutions in their 3'-UTR regions, compared to HPRS-103. These results suggest that the env gene and the 3'-UTR regions in these ALV-J isolates have evolved rapidly, and might be involved in the oncogenic spectrum of ALV-J. The results of this study contribute to our further study of the relationship between ALV integration patterns and multi-pathotypes associated with ALV-J.
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Affiliation(s)
- Yuhao Li
- Key Laboratory of Veterinary Vaccine Innovation of the Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, People's Republic of China
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Li H, Ji J, Xie Q, Shang H, Zhang H, Xin X, Chen F, Sun B, Xue C, Ma J, Bi Y. Aberrant expression of liver microRNA in chickens infected with subgroup J avian leukosis virus. Virus Res 2012; 169:268-71. [PMID: 22800510 DOI: 10.1016/j.virusres.2012.07.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2012] [Revised: 06/11/2012] [Accepted: 07/04/2012] [Indexed: 12/23/2022]
Abstract
Subgroup J avian leukosis virus (ALV-J) is an oncogenic retrovirus primarily causing myeloid leukosis (ML) in broilers. Although ALV is well under control in a few countries including the USA, poultry industry in many parts of the world continues suffering from serious economic loss due to sporadic or widespread ALV infection, especially ALV-J infection. ALV-J infection of chickens is reportedly mediated by a cellular receptor. So far, however, no genetic variant of the receptor gene that confers resistance to ALV-J has been identified. To advance our understanding on epigenetic factors that are involved in the event of ALV-J infection, we examined the expression of miRNAs in livers of 10-week-old chickens uninfected or infected with ALV-J by miRNA microarray analysis. Our data showed there were 12 miRNAs differentially expressed in liver between the uninfected and infected groups (P<0.01). Of which, the expressions of seven miRNAs (gga-mir-221, gga-mir-222, gga-mir-1456, gga-mir-1704, gga-mir-1777, gga-mir-1790, and gga-mir-2127,) were upregulated by ALV-J infection and may be involved in oncogenicity. The other five miRNAs (gga-let-7b, gga-let-7i, gga-mir-125b, gga-mir-375, and gga-mir-458) were significantly downregulated. The downregulated miRNAs may play important roles in tumor suppression. This finding paves the way for further exploration of epigenetic influence on tumorigenicity upon ALV-J infection.
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Affiliation(s)
- Hongmei Li
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China
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