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Surján A, Harrach B, Vidovszky MZ. Complete genome characterization and phylogenetic analysis of a novel polyomavirus detected in Eurasian beavers (Castor fiber). INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2024; 123:105620. [PMID: 38876268 DOI: 10.1016/j.meegid.2024.105620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 06/04/2024] [Accepted: 06/11/2024] [Indexed: 06/16/2024]
Abstract
The Eurasian beaver (Castor fiber), native to Hungary, faced local extinction in 1865 and was successfully reintroduced between mid-1980s and 2008. Despite screening programs focusing on animal health during reintroduction in other countries, information about viruses in the Hungarian beaver population remains limited. Polyomaviruses (PyVs) have been identified in various rodents, and have been detected just recently in beavers by us. In this paper we present the full genome analysis of the first PyV detected in Eurasian beaver. The novel PyV was discovered in the kidney tissues of two specimens. The genome is 5244 bp, and contains four genes. Small T-antigen (STAg) and alternative large T ORF (ALTO) genes are directly fused together forming the middle T-antigen (MTAg). VP3 is absent from the genome. Its large T-antigen (LTAg) coding sequence exhibited over 15% genetic divergence from known PyVs, supporting its classification into a new species within the genus Alphapolyomavirus, suggesting to be named Alphapolyomavirus castoris. Phylogenetic analysis, based on the LTAg gene showed, that the beaver PyV forms a distinct clade with primate PyVs within the genus Alphapolyomavirus, separate from other rodent PyVs. Phylogenetic study of the VP1 gene however showed this virus to belong in a distinct clade with the same primate PyVs, and additionally PyVs from rodents and a myocastor, which suggest host virus co-evolution. The virus detection of the euthanized beavers suggests an apathogenic persistent infections. The aquatic lifestyle of beavers may influence virus transmission, warranting further exploration of undiscovered viruses in beavers.
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Affiliation(s)
- András Surján
- HUN-REN Veterinary Medical Research Institute, Hungária krt. 21, H-1143 Budapest, Hungary.
| | - Balázs Harrach
- HUN-REN Veterinary Medical Research Institute, Hungária krt. 21, H-1143 Budapest, Hungary
| | - Márton Z Vidovszky
- HUN-REN Veterinary Medical Research Institute, Hungária krt. 21, H-1143 Budapest, Hungary
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2
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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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3
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Koonin EV, Kuhn JH, Dolja VV, Krupovic M. Megataxonomy and global ecology of the virosphere. THE ISME JOURNAL 2024; 18:wrad042. [PMID: 38365236 PMCID: PMC10848233 DOI: 10.1093/ismejo/wrad042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/22/2023] [Accepted: 12/28/2023] [Indexed: 02/18/2024]
Abstract
Nearly all organisms are hosts to multiple viruses that collectively appear to be the most abundant biological entities in the biosphere. With recent advances in metagenomics and metatranscriptomics, the known diversity of viruses substantially expanded. Comparative analysis of these viruses using advanced computational methods culminated in the reconstruction of the evolution of major groups of viruses and enabled the construction of a virus megataxonomy, which has been formally adopted by the International Committee on Taxonomy of Viruses. This comprehensive taxonomy consists of six virus realms, which are aspired to be monophyletic and assembled based on the conservation of hallmark proteins involved in capsid structure formation or genome replication. The viruses in different major taxa substantially differ in host range and accordingly in ecological niches. In this review article, we outline the latest developments in virus megataxonomy and the recent discoveries that will likely lead to reassessment of some major taxa, in particular, split of three of the current six realms into two or more independent realms. We then discuss the correspondence between virus taxonomy and the distribution of viruses among hosts and ecological niches, as well as the abundance of viruses versus cells in different habitats. The distribution of viruses across environments appears to be primarily determined by the host ranges, i.e. the virome is shaped by the composition of the biome in a given habitat, which itself is affected by abiotic factors.
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Affiliation(s)
- Eugene V Koonin
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894, United States
| | - Jens H Kuhn
- Integrated Research Facility at Fort Detrick, Division of Clinical Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Fort Detrick, Frederick, MD 21702, United States
| | - Valerian V Dolja
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331, United States
| | - Mart Krupovic
- Institut Pasteur, Université Paris Cité, Archaeal Virology Unit, 75015 Paris, France
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4
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Vargas KL, Kraberger S, Custer JM, Paietta EN, Culver M, Munguia-Vega A, Dolby GA, Varsani A. Identification of a novel polyomavirus in wild Sonoran Desert rodents of the family Heteromyidae. Arch Virol 2023; 168:253. [PMID: 37715108 DOI: 10.1007/s00705-023-05877-5] [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: 08/04/2023] [Accepted: 08/26/2023] [Indexed: 09/17/2023]
Abstract
Rodents are the largest and most diverse group of mammals. Covering a wide range of structural and functional adaptations, rodents successfully occupy virtually every terrestrial habitat, and they are often found in close association with humans, domestic animals, and wildlife. Although a significant amount of research has focused on rodents' prominence as known reservoirs of zoonotic viruses, there has been less emphasis on the viral ecology of rodents in general. Here, we utilized a viral metagenomics approach to investigate polyomaviruses in wild rodents from the Baja California peninsula, Mexico, using fecal samples. We identified a novel polyomavirus in fecal samples from two rodent species, a spiny pocket mouse (Chaetodipus spinatus) and a Dulzura kangaroo rat (Dipodomys simulans). These two polyomaviruses represent a new species in the genus Betapolyomavirus. Sequences of this polyomavirus cluster phylogenetically with those of other rodent polyomaviruses and two other non-rodent polyomaviruses (WU and KI) that have been identified in the human respiratory tract. Through our continued work on seven species of rodents, we endeavor to explore the viral diversity associated with wild rodents on the Baja California peninsula and expand on current knowledge of rodent viral ecology and evolution.
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Affiliation(s)
- Karla L Vargas
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine and School of Life Sciences, Arizona State University, Tempe, AZ, 85287, USA
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, 85721, USA
- Baja GeoGenomics Consortium, Tempe, USA
| | - Simona Kraberger
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine and School of Life Sciences, Arizona State University, Tempe, AZ, 85287, USA
| | - Joy M Custer
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine and School of Life Sciences, Arizona State University, Tempe, AZ, 85287, USA
- University of Texas at Austin, Austin, TX, 78705, USA
| | - Elise N Paietta
- Department of Biology, Duke University, Durham, NC, 27708, USA
| | - Melanie Culver
- U.S. Geological Survey, Arizona Cooperative Fish and Wildlife Research Unit, University of Arizona, Tucson, AZ, 85721, USA
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, 85721, USA
- Baja GeoGenomics Consortium, Tempe, USA
| | - Adrian Munguia-Vega
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, 85721, USA
- Baja GeoGenomics Consortium, Tempe, USA
- Applied Genomics Lab, 23000, La Paz, Baja California Sur, Mexico
| | - Greer A Dolby
- Baja GeoGenomics Consortium, Tempe, USA.
- Department of Biology, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
| | - Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine and School of Life Sciences, Arizona State University, Tempe, AZ, 85287, USA.
- Structural Biology Research Unit, Department of Integrative Biomedical Sciences, University of Cape Town, Cape Town, 7925, South Africa.
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5
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Abrantes J, Varsani A, Pereira P, Maia C, Farias I, Veríssimo A, Neves F. Identification and characterization of a polyomavirus in the thornback skate (Raja clavata). Virol J 2023; 20:190. [PMID: 37620878 PMCID: PMC10463871 DOI: 10.1186/s12985-023-02149-1] [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: 07/06/2023] [Accepted: 08/02/2023] [Indexed: 08/26/2023] Open
Abstract
Members of the family Polyomaviridae have a circular double-stranded DNA genome that have been identified in various hosts ranging from mammals to arachnids. Here we report the identification and analysis of a complete genome sequence of a novel polyomavirus, Raja clavata polyomavirus (RcPyV1), from a cartilaginous fish, the thornback skate (Raja clavata). The genome sequence was determined using a metagenomics approach with an aim to provide baseline viral data in cartilaginous fish in different ecosystems. The RcPyV1 genome (4,195 nucleotides) had typical organization of polyomavirus, including early antigens (small T; Large T) encoded on one strand and late viral proteins (VP1; VP2) on the complementary strand. Maximum-likelihood phylogenetic analysis of the large T-antigen revealed that RcPyV1 clusters with a polyomavirus obtained from another cartilaginous fish, the guitarfish polyomavirus 1 (GfPyV1). These two share ~ 56% pairwise identity in LT and VP1 protein sequences. These analyses support the hypothesis that cartilaginous fishes have a specific lineage of polyomaviruses.
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Affiliation(s)
- Joana Abrantes
- CIBIO-InBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Vairão, 4485-661, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, 4485-661, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, Porto, 4169-007, Portugal
| | - Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, Tempe, AZ, USA
- Structural Biology Research Unit, Department of Integrative, Biomedical Sciences, University of Cape Town, Observatory, Cape Town, 7925, South Africa
| | - Paulo Pereira
- CIBIO-InBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Vairão, 4485-661, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, 4485-661, Portugal
| | - Catarina Maia
- Portuguese Institute for Sea and Atmosphere, Division of Modelling and Management of Fisheries Resources, Alges, 1495-165, Portugal
| | - Inês Farias
- CIBIO-InBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Vairão, 4485-661, Portugal
| | - Ana Veríssimo
- CIBIO-InBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Vairão, 4485-661, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, 4485-661, Portugal
| | - Fabiana Neves
- CIBIO-InBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Vairão, 4485-661, Portugal.
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, 4485-661, Portugal.
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6
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Kaiserman J, O’Hara BA, Haley SA, Atwood WJ. An Elusive Target: Inhibitors of JC Polyomavirus Infection and Their Development as Therapeutics for the Treatment of Progressive Multifocal Leukoencephalopathy. Int J Mol Sci 2023; 24:8580. [PMID: 37239927 PMCID: PMC10218015 DOI: 10.3390/ijms24108580] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Progressive multifocal leukoencephalopathy (PML) is a rare demyelinating disease caused by infection with JC Polyomavirus (JCPyV). Despite the identification of the disease and isolation of the causative pathogen over fifty years ago, no antiviral treatments or prophylactic vaccines exist. Disease onset is usually associated with immunosuppression, and current treatment guidelines are limited to restoring immune function. This review summarizes the drugs and small molecules that have been shown to inhibit JCPyV infection and spread. Paying attention to historical developments in the field, we discuss key steps of the virus lifecycle and antivirals known to inhibit each event. We review current obstacles in PML drug discovery, including the difficulties associated with compound penetrance into the central nervous system. We also summarize recent findings in our laboratory regarding the potent anti-JCPyV activity of a novel compound that antagonizes the virus-induced signaling events necessary to establish a productive infection. Understanding the current panel of antiviral compounds will help center the field for future drug discovery efforts.
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Affiliation(s)
| | | | | | - Walter J. Atwood
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI 02912, USA
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7
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Jimoh AO, Balle C, Brown B, Feng C, Havyarimana E, Konstantinus IN, Gill K, Bekker LG, Passmore JAS, Jaspan HB, Varsani A, Happel AU. Genome Sequences of Anelloviruses, a Genomovirus, Microviruses, Polyomaviruses, and an Unclassified Caudovirus Identified in Vaginal Secretions from South African Adolescents. Microbiol Resour Announc 2023; 12:e0114322. [PMID: 36533922 PMCID: PMC9872636 DOI: 10.1128/mra.01143-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 12/03/2022] [Indexed: 12/23/2022] Open
Abstract
Other than for papillomaviruses, there is a paucity of whole-genome sequences for bacteriophages and eukaryote-infecting viruses isolated from the female genital tract. Here, we report the genome sequences of 16 microviruses, 3 anelloviruses, 2 polyomaviruses, 1 genomovirus, and 1 caudovirus that were identified in vaginal secretion samples from adolescents in South Africa.
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Affiliation(s)
- Adijat O. Jimoh
- Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Genetics, Genomics, and Bioinformatics Department, National Biotechnology Development Agency, Abuja, Nigeria
| | - Christina Balle
- Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Bryan Brown
- Seattle Children’s Research Institute, Seattle, Washington, USA
- Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, USA
| | - Colin Feng
- Seattle Children’s Research Institute, Seattle, Washington, USA
| | - Enock Havyarimana
- Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- School of Infection and Immunity, University of Glasgow, Glasgow, United Kingdom
| | - Iyaloo N. Konstantinus
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Namibia Institute of Pathology, Windhoek, Namibia
- NRF-DST Centre of Excellence in HIV Prevention, Centre for the AIDS Programme of Research in South Africa, Durban, South Africa
| | | | - Linda-Gail Bekker
- Desmond Tutu HIV Centre, University of Cape Town, Cape Town, South Africa
| | - Jo-Ann S. Passmore
- Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Desmond Tutu HIV Centre, University of Cape Town, Cape Town, South Africa
- National Health Laboratory Service, Cape Town, South Africa
- Division of Medical Virology, Department of Pathology, University of Cape Town, Cape Town, South Africa
| | - Heather B. Jaspan
- Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Seattle Children’s Research Institute, Seattle, Washington, USA
- Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, USA
- Department of Global Health, University of Washington, Seattle, Washington, USA
| | - Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine and School of Life Sciences, Arizona State University, Tempe, Arizona, USA
- Structural Biology Research Unit, Department of Integrative Biomedical Sciences, University of Cape Town, Cape Town, South Africa
| | - Anna-Ursula Happel
- Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
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8
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Kraberger S, Serieys LEK, Riley SPD, Schmidlin K, Newkirk ES, Squires JR, Buck CB, Varsani A. Novel polyomaviruses identified in fecal samples from four carnivore species. Arch Virol 2023; 168:18. [PMID: 36593361 PMCID: PMC10681122 DOI: 10.1007/s00705-022-05675-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 11/21/2022] [Indexed: 01/04/2023]
Abstract
Polyomaviruses are oncogenic viruses that are generally thought to have co-evolved with their hosts. While primate and rodent polyomaviruses are increasingly well-studied, less is known about polyomaviruses that infect other mammals. In an effort to gain insight into polyomaviruses associated with carnivores, we surveyed fecal samples collected in the USA from bobcats (Lynx rufus), pumas (Puma concolor), Canada lynxes (Lynx canadensis), and grizzly bears (Ursus arctos). Using a viral metagenomic approach, we identified six novel polyomavirus genomes. Surprisingly, four of the six genomes showed a phylogenetic relationship to polyomaviruses found in prey animals. These included a putative rabbit polyomavirus from a bobcat fecal sample and two possible deer-trophic polyomaviruses from Canada lynx feces. One polyomavirus found in a grizzly bear sample was found to be phylogenetically distant from previously identified polyomaviruses. Further analysis of the grizzly bear fecal sample showed that it contained anelloviruses that are known to infect pigs, suggesting that the bear might have preyed on a wild or domestic pig. Interestingly, a polyomavirus genome identified in a puma fecal sample was found to be closely related both to raccoon polyomavirus 1 and to Lyon-IARC polyomavirus, the latter of which was originally identified in human saliva and skin swab specimens but has since been found in samples from domestic cats (Felis catus).
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Affiliation(s)
- Simona Kraberger
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine and School of Life Sciences, Arizona State University, Tempe, AZ, 85287, USA.
| | - Laurel E K Serieys
- Panthera, 8 W 40th St, 18th Floor, New York, NY, 10018, USA
- Santa Monica Mountains National Recreation Area, National Park Service, Thousand Oaks, CA, 91360, USA
| | - Seth P D Riley
- Santa Monica Mountains National Recreation Area, National Park Service, Thousand Oaks, CA, 91360, USA
| | - Kara Schmidlin
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine and School of Life Sciences, Arizona State University, Tempe, AZ, 85287, USA
| | | | - John R Squires
- U.S. Forest Service, Rocky Mountain Research Station, 800 East Beckwith Avenue, Missoula, MT, 59801, USA
| | - Christopher B Buck
- Lab of Cellular Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine and School of Life Sciences, Arizona State University, Tempe, AZ, 85287, USA.
- Structural Biology Research Unit, Department of Integrative Biomedical Sciences, University of Cape Town, Cape Town, 7925, South Africa.
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9
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Nomburg J, Zou W, Frost TC, Datta C, Vasudevan S, Starrett GJ, Imperiale MJ, Meyerson M, DeCaprio JA. Long-read sequencing reveals complex patterns of wraparound transcription in polyomaviruses. PLoS Pathog 2022; 18:e1010401. [PMID: 35363834 PMCID: PMC9007360 DOI: 10.1371/journal.ppat.1010401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 04/13/2022] [Accepted: 02/27/2022] [Indexed: 12/22/2022] Open
Abstract
Polyomaviruses (PyV) are ubiquitous pathogens that can cause devastating human diseases. Due to the small size of their genomes, PyV utilize complex patterns of RNA splicing to maximize their coding capacity. Despite the importance of PyV to human disease, their transcriptome architecture is poorly characterized. Here, we compare short- and long-read RNA sequencing data from eight human and non-human PyV. We provide a detailed transcriptome atlas for BK polyomavirus (BKPyV), an important human pathogen, and the prototype PyV, simian virus 40 (SV40). We identify pervasive wraparound transcription in PyV, wherein transcription runs through the polyA site and circles the genome multiple times. Comparative analyses identify novel, conserved transcripts that increase PyV coding capacity. One of these conserved transcripts encodes superT, a T antigen containing two RB-binding LxCxE motifs. We find that superT-encoding transcripts are abundant in PyV-associated human cancers. Together, we show that comparative transcriptomic approaches can greatly expand known transcript and coding capacity in one of the simplest and most well-studied viral families.
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Affiliation(s)
- Jason Nomburg
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
- Harvard Program in Virology, Harvard University Graduate School of Arts and Sciences, Boston, Massachusetts, United States of America
| | - Wei Zou
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Thomas C. Frost
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America
- Harvard Program in Virology, Harvard University Graduate School of Arts and Sciences, Boston, Massachusetts, United States of America
| | - Chandreyee Datta
- Massachusetts General Hospital Cancer Center, Harvard Medical School, 185 Cambridge St, CPZN4202, Boston, Massachusetts, United States of America
- Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
- Center for Regenerative Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- Harvard Stem Cell Institute, Harvard University, Cambridge, Massachusetts, United States of America
| | - Shobha Vasudevan
- Massachusetts General Hospital Cancer Center, Harvard Medical School, 185 Cambridge St, CPZN4202, Boston, Massachusetts, United States of America
- Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
- Center for Regenerative Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- Harvard Stem Cell Institute, Harvard University, Cambridge, Massachusetts, United States of America
| | - Gabriel J. Starrett
- Laboratory of Cellular Oncology, CCR, NCI, NIH, Bethesda, Maryland, United States of America
| | - Michael J. Imperiale
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan, United States of America
- Rogel Cancer Center, Ann Arbor, Michigan, United States of America
| | - Matthew Meyerson
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
- Department of Genetics, Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - James A. DeCaprio
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America
- Harvard Program in Virology, Harvard University Graduate School of Arts and Sciences, Boston, Massachusetts, United States of America
- Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
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10
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Abstract
The COVID-19 pandemic has given the study of virus evolution and ecology new relevance. Although viruses were first identified more than a century ago, we likely know less about their diversity than that of any other biological entity. Most documented animal viruses have been sampled from just two phyla - the Chordata and the Arthropoda - with a strong bias towards viruses that infect humans or animals of economic and social importance, often in association with strong disease phenotypes. Fortunately, the recent development of unbiased metagenomic next-generation sequencing is providing a richer view of the animal virome and shedding new light on virus evolution. In this Review, we explore our changing understanding of the diversity, composition and evolution of the animal virome. We outline the factors that determine the phylogenetic diversity and genomic structure of animal viruses on evolutionary timescales and show how this impacts assessment of the risk of disease emergence in the short term. We also describe the ongoing challenges in metagenomic analysis and outline key themes for future research. A central question is how major events in the evolutionary history of animals, such as the origin of the vertebrates and periodic mass extinction events, have shaped the diversity and evolution of the viruses they carry.
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