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Fehér E, Kaszab E, Mótyán JA, Máté D, Bali K, Hoitsy M, Sós E, Jakab F, Bányai K. Structural similarity of human papillomavirus E4 and polyomaviral VP4 exhibited by genomic analysis of the common kestrel (Falco tinnunculus) polyomavirus. Vet Res Commun 2024; 48:309-315. [PMID: 37688754 PMCID: PMC10810995 DOI: 10.1007/s11259-023-10210-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 08/28/2023] [Indexed: 09/11/2023]
Abstract
Polyomaviruses are widely distributed viruses of birds that may induce developmental deformities and internal organ disorders primarily in nestlings. In this study, polyomavirus sequence was detected in kidney and liver samples of a common kestrel (Falco tinnunculus) that succumbed at a rescue station in Hungary. The amplified 5025 nucleotide (nt) long genome contained the early (large and small T antigen, LTA and STA) and late (viral proteins, VP1, VP2, VP3) open reading frames (ORFs) typical for polyomaviruses. One of the additional putative ORFs (named VP4) showed identical localization with the VP4 and ORF-X of gammapolyomaviruses, but putative splicing sites could not be found in its sequence. Interestingly, the predicted 123 amino acid (aa) long protein sequence showed the highest similarity with human papillomavirus E4 early proteins in respect of the aa distribution and motif arrangement implying similar functions. The LTA of the kestrel polyomavirus shared <59.2% nt and aa pairwise identity with the LTA sequence of other polyomaviruses and formed a separated branch in the phylogenetic tree among gammapolyomaviruses. Accordingly, the kestrel polyomavirus may be the first member of a novel species within the Gammapolyomavirus genus, tentatively named Gammapolyomavirus faltin.
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Affiliation(s)
- Enikő Fehér
- HUN-REN Veterinary Medical Research Institute, Budapest, Hungary.
- National Laboratory for Infectious Animal Diseases, Antimicrobial Resistance, Veterinary Public Health and Food Chain Safety, Budapest, Hungary.
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary.
| | - Eszter Kaszab
- HUN-REN Veterinary Medical Research Institute, Budapest, Hungary
- National Laboratory for Infectious Animal Diseases, Antimicrobial Resistance, Veterinary Public Health and Food Chain Safety, Budapest, Hungary
- Institute of Metagenomics, University of Debrecen, Debrecen, Hungary
| | - János András Mótyán
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Dóra Máté
- HUN-REN Veterinary Medical Research Institute, Budapest, Hungary
| | - Krisztina Bali
- HUN-REN Veterinary Medical Research Institute, Budapest, Hungary
- National Laboratory for Infectious Animal Diseases, Antimicrobial Resistance, Veterinary Public Health and Food Chain Safety, Budapest, Hungary
| | - Márton Hoitsy
- Conservation and Veterinary Services, Budapest Zoo and Botanical Garden, Budapest, Hungary
- Department of Exotic Animal and Wildlife Medicine, University of Veterinary Medicine, Budapest, Hungary
| | - Endre Sós
- Conservation and Veterinary Services, Budapest Zoo and Botanical Garden, Budapest, Hungary
- Department of Exotic Animal and Wildlife Medicine, University of Veterinary Medicine, Budapest, Hungary
| | - Ferenc Jakab
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Krisztián Bányai
- HUN-REN Veterinary Medical Research Institute, Budapest, Hungary
- National Laboratory for Infectious Animal Diseases, Antimicrobial Resistance, Veterinary Public Health and Food Chain Safety, Budapest, Hungary
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, Budapest, Hungary
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Yun YJ, Song H, Kwon YK, Park CK, Kim HR. Genetic characterization of avian polyomaviruses identified from psittacine birds in South Korea. Avian Pathol 2023; 52:420-425. [PMID: 37565272 DOI: 10.1080/03079457.2023.2247347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 07/26/2023] [Indexed: 08/12/2023]
Abstract
Budgerigar fledgling disease (BFD) is a contagious disease caused by avian polyomavirus (APV) in psittacine birds and causes high mortality rates. Here, eight APV-positive cases were confirmed from dead parrots or parrot tissue samples by polymerase chain reaction (PCR). Full-length genome sequencing showed high nucleotide identity (98.84-100%) between the APV strains. Phylogenetic analysis revealed that two genogroups were cocirculating in South Korea. The nucleotide sequences of five strains, collected from different parrot species, were identical; however, pathological lesions were observed in only two parrots, both aged 2 months. Pathology included necrotic spots in the liver, subcutaneous haemorrhage, hepatomegaly, ascites, intranuclear inclusion bodies, hepatocyte karyomegaly, hepatic necrosis, and bile duct proliferation. This suggests that the pathogenicity of APV might be host age-dependent regardless of the host species. This study improves our understanding of APV pathogenicity and provides a more detailed genetic characterization of APV strains.RESEARCH HIGHLIGHTS Eight APV strains were identified in South Korea from 2019 to 2021.By phylogenetic analysis, South Korean APV strains were classified into two clades.
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Affiliation(s)
- Ye-Ji Yun
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
- College of Veterinary Medicine & Animal Disease Intervention Center, Kyungpook National University, Daegu, Republic of Korea
| | - HyeSoon Song
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Yong-Kuk Kwon
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Choi-Kyu Park
- College of Veterinary Medicine & Animal Disease Intervention Center, Kyungpook National University, Daegu, Republic of Korea
| | - Hye-Ryoung Kim
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
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Wang CW, Chen YL, Mao SJT, Lin TC, Wu CW, Thongchan D, Wang CY, Wu HY. Pathogenicity of Avian Polyomaviruses and Prospect of Vaccine Development. Viruses 2022; 14:v14092079. [PMID: 36146885 PMCID: PMC9505546 DOI: 10.3390/v14092079] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 11/23/2022] Open
Abstract
Polyomaviruses are nonenveloped icosahedral viruses with a double-stranded circular DNA containing approximately 5000 bp and 5–6 open reading frames. In contrast to mammalian polyomaviruses (MPVs), avian polyomaviruses (APVs) exhibit high lethality and multipathogenicity, causing severe infections in birds without oncogenicity. APVs are classified into 10 major species: Adélie penguin polyomavirus, budgerigar fledgling disease virus, butcherbird polyomavirus, canary polyomavirus, cormorant polyomavirus, crow polyomavirus, Erythrura gouldiae polyomavirus, finch polyomavirus, goose hemorrhagic polyomavirus, and Hungarian finch polyomavirus under the genus Gammapolyomavirus. This paper briefly reviews the genomic structure and pathogenicity of the 10 species of APV and some of their differences in terms of virulence from MPVs. Each gene’s genomic size, number of amino acid residues encoding each gene, and key biologic functions are discussed. The rationale for APV classification from the Polyomavirdae family and phylogenetic analyses among the 10 APVs are also discussed. The clinical symptoms in birds caused by APV infection are summarized. Finally, the strategies for developing an effective vaccine containing essential epitopes for preventing virus infection in birds are discussed. We hope that more effective and safe vaccines with diverse protection will be developed in the future to solve or alleviate the problems of viral infection.
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Affiliation(s)
- Chen-Wei Wang
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
- International Degree Program in Animal Vaccine Technology, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Yung-Liang Chen
- Department of Medical Laboratory Science and Biotechnology, Yuan Pei University of Medical Technology, Yuanpei Street, Hsinchu 300, Taiwan
| | - Simon J. T. Mao
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Tzu-Chieh Lin
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
- International Degree Program in Animal Vaccine Technology, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Ching-Wen Wu
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
- Department of Tropical Agriculture and International Cooperation, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Duangsuda Thongchan
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
- Faculty of Agriculture and Technology, Rajamangala University of Technology Isan, Surin Campus, Nakhon Ratchasima 30000, Thailand
| | - Chi-Young Wang
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung 402, Taiwan
- The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung 402, Taiwan
- Correspondence: (C.-Y.W.); (H.-Y.W.); Tel.: +886-4-22840369 (ext. 48) (C.-Y.W.); +886-8-7703202 (ext. 5072) (H.-Y.W.)
| | - Hung-Yi Wu
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
- Correspondence: (C.-Y.W.); (H.-Y.W.); Tel.: +886-4-22840369 (ext. 48) (C.-Y.W.); +886-8-7703202 (ext. 5072) (H.-Y.W.)
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Cho M, Kim H, Son HS. Codon usage patterns of LT-Ag genes in polyomaviruses from different host species. Virol J 2019; 16:137. [PMID: 31727090 PMCID: PMC6854729 DOI: 10.1186/s12985-019-1245-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 10/17/2019] [Indexed: 11/10/2022] Open
Abstract
Background Polyomaviruses (PyVs) have a wide range of hosts, from humans to fish, and their effects on hosts vary. The differences in the infection characteristics of PyV with respect to the host are assumed to be influenced by the biochemical function of the LT-Ag protein, which is related to the cytopathic effect and tumorigenesis mechanism via interaction with the host protein. Methods We carried out a comparative analysis of codon usage patterns of large T-antigens (LT-Ags) of PyVs isolated from various host species and their functional domains and sequence motifs. Parity rule 2 (PR2) and neutrality analysis were applied to evaluate the effects of mutation and selection pressure on codon usage bias. To investigate evolutionary relationships among PyVs, we carried out a phylogenetic analysis, and a correspondence analysis of relative synonymous codon usage (RSCU) values was performed. Results Nucleotide composition analysis using LT-Ag gene sequences showed that the GC and GC3 values of avian PyVs were higher than those of mammalian PyVs. The effective number of codon (ENC) analysis showed host-specific ENC distribution characteristics in both the LT-Ag gene and the coding sequences of its domain regions. In the avian and fish PyVs, the codon diversity was significant, whereas the mammalian PyVs tended to exhibit conservative and host-specific evolution of codon usage bias. The results of our PR2 and neutrality analysis revealed mutation bias or highly variable GC contents by showing a narrow GC12 distribution and wide GC3 distribution in all sequences. Furthermore, the calculated RSCU values revealed differences in the codon usage preference of the LT-AG gene according to the host group. A similar tendency was observed in the two functional domains used in the analysis. Conclusions Our study showed that specific domains or sequence motifs of various PyV LT-Ags have evolved so that each virus protein interacts with host cell targets. They have also adapted to thrive in specific host species and cell types. Functional domains of LT-Ag, which are known to interact with host proteins involved in cell proliferation and gene expression regulation, may provide important information, as they are significantly related to the host specificity of PyVs.
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Affiliation(s)
- Myeongji Cho
- Laboratory of Computational Biology & Bioinformatics, Institute of Public Health and Environment, Graduate School of Public Health, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Hayeon Kim
- Department of Biomedical Laboratory Science, Kyungdong University, 815 Gyeonhwon-ro, Munmak, Wonju, Gangwondo, 24695, South Korea
| | - Hyeon S Son
- Laboratory of Computational Biology & Bioinformatics, Institute of Public Health and Environment, Graduate School of Public Health, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea. .,SNU Bioinformatics Institute, Interdisciplinary Graduate Program in Bioinformatics, College of Natural Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea.
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Ma J, Wu R, Tian Y, Zhang M, Wang W, Li Y, Tian F, Cheng Y, Yan Y, Sun J. Isolation and characterization of an Aves polyomavirus 1 from diseased budgerigars in China. Vet Microbiol 2019; 237:108397. [PMID: 31585638 DOI: 10.1016/j.vetmic.2019.108397] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 08/20/2019] [Accepted: 08/20/2019] [Indexed: 01/19/2023]
Abstract
Aves polyomavirus 1 (APV) causes inflammatory disease in psittacine birds, especially in young budgerigar. In this study, an APV virus (SD18 strain) was isolated from a diseased psittacine birds breeding facility. The full genome (4981 bp) of SD18 was determined and analyzed. Phylogenetic analysis of full genome sequences indicated all the APV strains form two groups. The SD18 strain showed close relationship with APV isolated from Poland, however, the other Chinese strains are located in group II, which suggested different genotypes APVs are co-circulating in China. Compared with the consensus sequence of APV full genome, the SD18 strain contains 13 nucleotide mutations, and 2 unique amino acid substitutions (R179M and Q382K) located in VP2/3 and Large T proteins. To explore the pathogenicity of the virus, the SD18 strain was used to challenge 2-week-old budgerigars. All infected birds died no later than 5 days post infection, and virus was detected in multiple organs including brain, heart, ingluvies, liver, and intestine, which indicated that SD18 is fatal and causes systemic infection in young budgerigar. In vitro studies showed that SD18 replicated efficiently in CEF cells and reached the highest viral titers at 9 days post infection. Notably, replication of SD18 stimulated IFN-β response in CEF cells and overexpression of the VP4 or VP4Delta proteins significantly inhibited IFN-β promoter activation, which could be the strategy of APV to escape from the host innate immunity.
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Affiliation(s)
- Jingjiao Ma
- Shanghai Key Laboratory of Veterinary Biotechnology, Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Rujuan Wu
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, China
| | - Ye Tian
- Shandong Provincial Center for Animal Disease Control and Prevention, Jinan, Shandong, China
| | - Min Zhang
- Shandong Provincial Center for Animal Disease Control and Prevention, Jinan, Shandong, China
| | - Weili Wang
- Jilin Entry-Exit Inspection and Quarantine Bureau, Changchun, Jilin, China
| | - Yujie Li
- Shandong Provincial Center for Animal Disease Control and Prevention, Jinan, Shandong, China
| | - Fulin Tian
- Shandong Provincial Center for Animal Disease Control and Prevention, Jinan, Shandong, China
| | - Yuqiang Cheng
- Shanghai Key Laboratory of Veterinary Biotechnology, Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yaxian Yan
- Shanghai Key Laboratory of Veterinary Biotechnology, Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jianhe Sun
- Shanghai Key Laboratory of Veterinary Biotechnology, Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
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Establishment of rapid detection method and surveillance of budgerigar fledgling disease virus using a TaqMan Real-Time PCR. Mol Cell Probes 2019; 43:80-83. [DOI: 10.1016/j.mcp.2018.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 11/07/2018] [Accepted: 11/07/2018] [Indexed: 11/19/2022]
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Biology, evolution, and medical importance of polyomaviruses: An update. INFECTION GENETICS AND EVOLUTION 2017. [DOI: 10.1016/j.meegid.2017.06.011] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Kim HJ, Lee SR, Park CK. First detection of avian polyomavirus by PCR from Alexandrine Parakeet (Psittacula eupatria) in Korea. ACTA ACUST UNITED AC 2014. [DOI: 10.7853/kjvs.2014.37.3.213] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Zielonka A, Gedvilaite A, Reetz J, Rösler U, Müller H, Johne R. Serological cross-reactions between four polyomaviruses of birds using virus-like particles expressed in yeast. J Gen Virol 2012; 93:2658-2667. [DOI: 10.1099/vir.0.044917-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Polyomaviruses are aetiological agents of fatal acute diseases in various bird species. Genomic analysis revealed that avian polyomavirus (APyV), crow polyomavirus (CPyV), finch polyomavirus (FPyV) and goose hemorrhagic polyomavirus (GHPyV) are closely related to each other, but nevertheless form separate viral species; however, their serological relationship was previously unknown. As only APyV can be grown efficiently in tissue culture, virus-like particles (VLPs) were generated by expression of the genomic regions encoding the major structural protein VP1 of these viruses in yeast; these were used to elicit type-specific antibodies in rabbits and as antigens in serological reactions. For increased VLP assembly, a nuclear-localization signal was introduced into APyV-VP1. VLPs derived from the VP1 of the monkey polyomavirus simian virus 40 served as control. APyV-, GHPyV- and CPyV-VLPs showed haemagglutinating activity with chicken and human erythrocytes. CPyV- and GHPyV-specific sera showed slight cross-reactions in immunoblotting, haemagglutination-inhibition assay and indirect ELISA. The FPyV-specific serum inhibited the haemagglutination activity of APyV-VLPs slightly and showed a weak cross-neutralizing activity against APyV in cell-culture tests. Generally, these data indicate that the four polyomaviruses of birds are serologically distinct. However, in accordance with genetic data, a relationship between CPyV and GHPyV as well as between APyV and FPyV is evident, and grouping into two different serogroups may be suggested. The haemagglutinating activity of APyV, CPyV and GHPyV may indicate similar receptor-binding mechanisms for these viruses. Our data could be useful for the development of vaccines against the polyomavirus-induced diseases in birds and for interpretation of diagnostic test results.
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Affiliation(s)
- Anja Zielonka
- Institute of Animal Hygiene and Veterinary Public Health, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 1, 04103 Leipzig, Germany
- Institute for Virology, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 29, 04103 Leipzig, Germany
| | - Alma Gedvilaite
- Vilnius University, Institute of Biotechnology, Graiciuno 8, Vilnius, Lithuania
| | - Jochen Reetz
- Federal Institute for Risk Assessment, Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
| | - Uwe Rösler
- Institute of Animal and Environmental Hygiene, Free University Berlin, Philippstrasse 13, 10115 Berlin, Germany
- Institute of Animal Hygiene and Veterinary Public Health, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 1, 04103 Leipzig, Germany
| | - Hermann Müller
- Institute for Virology, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 29, 04103 Leipzig, Germany
| | - Reimar Johne
- Federal Institute for Risk Assessment, Max-Dohrn-Strasse 8-10, 10589 Berlin, Germany
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Shen PS, Enderlein D, Nelson CDS, Carter WS, Kawano M, Xing L, Swenson RD, Olson NH, Baker TS, Cheng RH, Atwood WJ, Johne R, Belnap DM. The structure of avian polyomavirus reveals variably sized capsids, non-conserved inter-capsomere interactions, and a possible location of the minor capsid protein VP4. Virology 2011; 411:142-52. [PMID: 21239031 DOI: 10.1016/j.virol.2010.12.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2010] [Revised: 11/18/2010] [Accepted: 12/06/2010] [Indexed: 10/18/2022]
Abstract
Avian polyomavirus (APV) causes a fatal, multi-organ disease among several bird species. Using cryogenic electron microscopy and other biochemical techniques, we investigated the structure of APV and compared it to that of mammalian polyomaviruses, particularly JC polyomavirus and simian virus 40. The structure of the pentameric major capsid protein (VP1) is mostly conserved; however, APV VP1 has a unique, truncated C-terminus that eliminates an intercapsomere-connecting β-hairpin observed in other polyomaviruses. We postulate that the terminal β-hairpin locks other polyomavirus capsids in a stable conformation and that absence of the hairpin leads to the observed capsid size variation in APV. Plug-like density features were observed at the base of the VP1 pentamers, consistent with the known location of minor capsid proteins VP2 and VP3. However, the plug density is more prominent in APV and may include VP4, a minor capsid protein unique to bird polyomaviruses.
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Affiliation(s)
- Peter S Shen
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA
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Halami MY, Dorrestein GM, Couteel P, Heckel G, Müller H, Johne R. Whole-genome characterization of a novel polyomavirus detected in fatally diseased canary birds. J Gen Virol 2010; 91:3016-22. [PMID: 20797969 DOI: 10.1099/vir.0.023549-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Polyomaviruses of birds are aetiological agents of acute inflammatory diseases in non-immunocompromised hosts, which is in contrast to mammalian polyomaviruses. VP4, an additional structural protein encoded by the viral genomes of the known avian polyomaviruses, has been suggested to contribute to pathogenicity through loss of cells following induction of apoptosis. Four distinct bird polyomaviruses have been identified so far, which infect crows, finches, geese and parrots. Using broad-spectrum PCR, a novel polyomavirus, tentatively designated canary polyomavirus (CaPyV), was detected in diseased canary birds (Serinus canaria) that died at an age of about 40 days. Intranuclear inclusion bodies were found in the liver, spleen and kidneys. The entire viral genome was amplified from a tissue sample using rolling-circle amplification. Phylogenetic analysis of the genome sequence indicated a close relationship between CaPyV and other avian polyomaviruses. Remarkably, an ORF encoding VP4 could not be identified in the CaPyV genome. Therefore, the mechanism of pathogenicity of CaPyV may be different from that of the other avian polyomaviruses.
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Affiliation(s)
- Mohammad Yahya Halami
- Institute for Virology, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany.
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Katoh H, Ohya K, Une Y, Yamaguchi T, Fukushi H. Molecular characterization of avian polyomavirus isolated from psittacine birds based on the whole genome sequence analysis. Vet Microbiol 2009; 138:69-77. [DOI: 10.1016/j.vetmic.2009.03.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2008] [Revised: 02/16/2009] [Accepted: 03/02/2009] [Indexed: 10/21/2022]
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Li J, Liu Q, Müller H, Hobom G. Avian polyomavirus expression patterns of bicistronic late mRNAs. Virology 2009; 388:42-8. [DOI: 10.1016/j.virol.2009.02.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2008] [Revised: 12/02/2008] [Accepted: 02/06/2009] [Indexed: 11/30/2022]
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Johne R, Müller H. Polyomaviruses of birds: etiologic agents of inflammatory diseases in a tumor virus family. J Virol 2007; 81:11554-9. [PMID: 17715213 PMCID: PMC2168798 DOI: 10.1128/jvi.01178-07] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Reimar Johne
- Federal Institute for Risk Assessment, Diedersdorfer Weg 1, D-12277 Berlin, Germany.
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Johne R, Paul G, Enderlein D, Stahl T, Grund C, Müller H. Avian polyomavirus mutants with deletions in the VP4-encoding region show deficiencies in capsid assembly and virus release, and have reduced infectivity in chicken. J Gen Virol 2007; 88:823-830. [PMID: 17325354 DOI: 10.1099/vir.0.82506-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Avian polyomavirus (APV) is the causative agent of an acute fatal disease in psittacine and some non-psittacine birds. In contrast to mammalian polyomaviruses, the APV genome encodes the additional capsid protein VP4 and its variant VP4Delta, truncated by an internal deletion. Both proteins induce apoptosis. Mutation of their common initiation codon prevents virus replication. Here, the generation of replication competent deletion mutants expressing either VP4 or VP4Delta is reported. In contrast to infection with wild-type virus, chicken embryo cells showed no cytopathic changes after infection with the mutants, and induction of apoptosis as well as virus release from the infected cells were delayed. Electron microscopy revealed the presence of a high proportion of small particles and tubules in preparations of the VP4 deletion mutant, indicating a scaffolding function for VP4. Wild-type and mutant viruses elicited neutralizing antibodies against APV after intramuscular and intraperitoneal infection of chicken; however, VP4-specific antibodies were only detected after infection with wild-type virus. Using the oculonasal route of infection, seroconversion was only observed in chickens infected with the wild-type virus, indicating a strongly reduced infectivity of the mutants. Based on the biological properties of the deletion mutants, they could be considered as candidates for APV marker vaccines.
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Affiliation(s)
- Reimar Johne
- Institute for Virology, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 29, D-04103 Leipzig, Germany
| | - Guntram Paul
- Intervet International, Wim de Körverstraat 35, 5830 AA Boxmeer, The Netherlands
| | - Dirk Enderlein
- Institute for Virology, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 29, D-04103 Leipzig, Germany
| | - Tobias Stahl
- Department of Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Christian Grund
- Institute for Avian Diseases, Ludwig Maximilians University Munich, Sonnenstraße 18, D-85764 Oberschleißheim, Germany
| | - Hermann Müller
- Institute for Virology, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 29, D-04103 Leipzig, Germany
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Johne R, Wittig W, Fernández-de-Luco D, Höfle U, Müller H. Characterization of two novel polyomaviruses of birds by using multiply primed rolling-circle amplification of their genomes. J Virol 2006; 80:3523-31. [PMID: 16537620 PMCID: PMC1440385 DOI: 10.1128/jvi.80.7.3523-3531.2006] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Polyomaviruses are small nonenveloped particles with a circular double-stranded genome, approximately 5 kbp in size. The mammalian polyomaviruses mainly cause persistent subclinical infections in their natural nonimmunocompromised hosts. In contrast, the polyomaviruses of birds--avian polyomavirus (APV) and goose hemorrhagic polyomavirus (GHPV)--are the primary agents of acute and chronic disease with high mortality rates in young birds. Screening of field samples of diseased birds by consensus PCR revealed the presence of two novel polyomaviruses in the liver of an Eurasian bullfinch (Pyrrhula pyrrhula griseiventris) and in the spleen of a Eurasian jackdaw (Corvus monedula), tentatively designated as finch polyomavirus (FPyV) and crow polyomavirus (CPyV), respectively. The genomes of the viruses were amplified by using multiply primed rolling-circle amplification and cloned. Analysis of the FPyV and CPyV genome sequences revealed a close relationship to APV and GHPV, indicating the existence of a distinct avian group among the polyomaviruses. The main characteristics of this group are (i) involvement in fatal disease, (ii) the existence of an additional open reading frame in the 5' region of the late mRNAs, and (iii) a different manner of DNA binding of the large tumor antigen compared to that of the mammalian polyomaviruses.
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Affiliation(s)
- Reimar Johne
- Institute for Virology, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 29, D-04103 Leipzig, Germany.
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Rahaus M, Wolff MH. A survey to detect subclinical polyomavirus infections of captive psittacine birds in Germany. Vet Microbiol 2005; 105:73-6. [PMID: 15607086 DOI: 10.1016/j.vetmic.2004.09.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2004] [Revised: 08/24/2004] [Accepted: 09/28/2004] [Indexed: 10/26/2022]
Abstract
Infections of avian polyomavirus (APV) are known to cause fatal disease in a wide range of psittacine and non-psittacine birds. Here, we present a survey to investigate the existence of subpopulation of persistent or subclinically infected parrots inside the population of captive psittacine birds in Germany. DNA was isolated from feathers of 85 symptom-free birds from 20 different genera (all psittaciformes) taken from 30 different breeders from all over Germany. The presence of APV was analysed by performing polymerase chain reaction assays (PCR). APV was detected in none of the samples, indicating that the existence of a subpopulation of captive psittacine birds having a persistent APV infection in Germany seems to be relatively low.
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Affiliation(s)
- Markus Rahaus
- Institute of Microbiology and Virology, University of Witten/Herdecke, Stockumer Street 10, D-58448 Witten, Germany.
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Johne R, Müller H. Nuclear localization of avian polyomavirus structural protein VP1 is a prerequisite for the formation of virus-like particles. J Virol 2004; 78:930-7. [PMID: 14694124 PMCID: PMC368749 DOI: 10.1128/jvi.78.2.930-937.2004] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Virions of polyomaviruses consist of the major structural protein VP1, the minor structural proteins VP2 and VP3, and the viral genome associated with histones. An additional structural protein, VP4, is present in avian polyomavirus (APV) particles. As it had been reported that expression of APV VP1 in insect cells did not result in the formation of virus-like particles (VLP), the prerequisites for particle formation were analyzed. To this end, recombinant influenza viruses were created to (co)express the structural proteins of APV in chicken embryo cells, permissive for APV replication. VP1 expressed individually or coexpressed with VP4 did not result in VLP formation; both proteins (co)localized in the cytoplasm. Transport of VP1, or the VP1-VP4 complex, into the nucleus was facilitated by the coexpression of VP3 and resulted in the formation of VLP. Accordingly, a mutant APV VP1 carrying the N-terminal nuclear localization signal of simian virus 40 VP1 was transported to the nucleus and assembled into VLP. These results support a model of APV capsid assembly in which complexes of the structural proteins VP1, VP3 (or VP2), and VP4, formed within the cytoplasm, are transported to the nucleus using the nuclear localization signal of VP3 (or VP2); there, capsid formation is induced by the nuclear environment.
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Affiliation(s)
- Reimar Johne
- Institute for Virology, Faculty of Veterinary Medicine, University of Leipzig, D-04103 Leipzig, Germany.
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Johne R, Müller H. The genome of goose hemorrhagic polyomavirus, a new member of the proposed subgenus Avipolyomavirus. Virology 2003; 308:291-302. [PMID: 12706079 DOI: 10.1016/s0042-6822(02)00103-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The full-length genome of goose hemorrhagic polyomavirus (GHPV), the ethiologic agent of hemorrhagic nephritis and enteritis of geese, was cloned and sequenced. Transfection of the circular ds DNA with a size of 5256 bp and an organisation typical of polyomaviruses produced viral progeny in cultured goose cells. According to the splicing sites determined by RT-PCR, five open reading frames (ORFs) were found to encode putative proteins with significant similarities to large T antigen and small t antigen as well as VP1, VP2, and VP3 of other polyomaviruses. An additional ORF located in the 5' region of late mRNA, with a coding capacity for 169 amino acids, shows a low degree of homology to VP4 of avian polyomavirus (APV). The alignment of nucleotide sequences and amino acid sequences revealed a relatively close relationship between GHPV and APV. Therefore, grouping of this new polyomavirus into the proposed subgenus Avipolyomavirus is suggested.
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Affiliation(s)
- Reimar Johne
- Institute for Virology, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany.
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Khan MS, Johne R, Beck I, Pawlita M, Kaleta EF, Müller H. Development of a blocking enzyme-linked immunosorbent assay for the detection of avian polyomavirus-specific antibodies. J Virol Methods 2000; 89:39-48. [PMID: 10996638 DOI: 10.1016/s0166-0934(00)00197-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Avian polyomavirus, described originally as budgerigar fledgling disease virus, has been associated with devastating contagious disease outbreaks in budgerigar aviaries. At present, this virus affects a wide range of psittacine and non-psittacine birds worldwide, and the serum neutralisation test is used for the serodiagnosis of avian polyomavirus infections. A blocking enzyme-linked immunosorbent assay was developed for the screening of large numbers of sera collected from various avian species. The assay employs a monoclonal antibody directed against the major structural protein VP1 as a blocking antibody in a sandwich blocking procedure. Either purified avian polyomavirus particles or avian polyomavirus VP1 expressed in recombinant baculovirus-infected Sf9 cells were used as antigen. The specificity of the blocking enzyme-linked immunosorbent assay was evaluated by testing sera directed against mammalian polyomaviruses. Using sera obtained from chicken infected experimentally with avian polyomavirus and a collection of psittacine field-origin sera, a good correlation was observed between the results of the blocking enzyme-linked immunosorbent assay and the serum neutralisation test. However, the blocking enzyme-linked immunosorbent assay is more rapid and more economic. Both, avian polyomavirus particles and VP1 produced by recombinant DNA technology proved to be suitable antigens.
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Affiliation(s)
- M S Khan
- Institute of Virology, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 29, D-04103, Leipzig, Germany
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