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Perdrizet UG, Hill JE, Sobchishin L, Singh B, Fernando C, Bollinger TK, Misra V. Tissue and cellular tropism of Eptesicus fuscus gammaherpesvirus in big brown bats, potential role of pulmonary intravascular macrophages. Vet Pathol 2024; 61:550-561. [PMID: 38619093 DOI: 10.1177/03009858241244849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
Gammaherpesviruses (γHVs) are recognized as important pathogens in humans but their relationship with other animal hosts, especially wildlife species, is less well characterized. Our objectives were to examine natural Eptesicus fuscus gammaherpesvirus (EfHV) infections in their host, the big brown bat (Eptesicus fuscus), and determine whether infection is associated with disease. In tissue samples from 132 individual big brown bats, EfHV DNA was detected by polymerase chain reaction in 41 bats. Tissues from 59 of these cases, including 17 from bats with detectable EfHV genomes, were analyzed. An EfHV isolate was obtained from one of the cases, and electron micrographs and whole genome sequencing were used to confirm that this was a unique isolate of EfHV. Although several bats exhibited various lesions, we did not establish EfHV infection as a cause. Latent infection, defined as RNAScope probe binding to viral latency-associated nuclear antigen in the absence of viral envelope glycoprotein probe binding, was found within cells of the lymphoid tissues. These cells also had colocalization of the B-cell probe targeting CD20 mRNA. Probe binding for both latency-associated nuclear antigen and a viral glycoprotein was observed in individual cells dispersed throughout the alveolar capillaries of the lung, which had characteristics of pulmonary intravascular macrophages. Cells with a similar distribution in bat lungs expressed major histocompatibility class II, a marker for antigen presenting cells, and the existence of pulmonary intravascular macrophages in bats was confirmed with transmission electron microscopy. The importance of this cell type in γHVs infections warrants further investigation.
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Affiliation(s)
| | - Janet E Hill
- University of Saskatchewan, Saskatoon, SK, Canada
| | | | - Baljit Singh
- University of Saskatchewan, Saskatoon, SK, Canada
| | | | | | - Vikram Misra
- University of Saskatchewan, Saskatoon, SK, Canada
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Holt EA, Waytashek CM, Sessions KJ, Asarian L, Lahue KG, Usherwood EJ, Teuscher C, Krementsov DN. Host Genetic Variation Has a Profound Impact on Immune Responses Mediating Control of Viral Load in Chronic Gammaherpesvirus Infection. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:1526-1539. [PMID: 37819784 PMCID: PMC10841120 DOI: 10.4049/jimmunol.2300294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 09/14/2023] [Indexed: 10/13/2023]
Abstract
Chronic infection with the gammaherpesvirus EBV is a risk factor for several autoimmune diseases, and poor control of EBV viral load and enhanced anti-EBV responses elevate this risk further. However, the role of host genetic variation in the regulation of immune responses to chronic gammaherpesvirus infection and control of viral replication remains unclear. To address this question, we infected C57BL/6J (B6) and genetically divergent wild-derived inbred PWD/PhJ (PWD) mice with murine gammaherpesvirus-68 (MHV-68), a gammaherpesvirus similar to EBV, and determined the effect of latent gammaherpesvirus infection on the CD4 T cell transcriptome. Chronic MHV-68 infection of B6 mice resulted in a dramatic upregulation of genes characteristic of a cytotoxic Th cell phenotype, including Gzmb, Cx3cr1, Klrg1, and Nkg7, a response that was highly muted in PWD mice. Flow cytometric analyses revealed an expansion of CX3CR1+KLRG1+ cytotoxic Th cell-like cells in B6 but not PWD mice. Analysis of MHV-68 replication demonstrated that in spite of muted adaptive responses, PWD mice had superior control of viral load in lymphoid tissue, despite an absence of a defect in MHV-68 in vitro replication in PWD macrophages. Depletion of NK cells in PWD mice, but not B6 mice, resulted in elevated viral load, suggesting genotype-dependent NK cell involvement in MHV-68 control. Taken together, our findings demonstrate that host genetic variation can regulate control of gammaherpesvirus replication through disparate immunological mechanisms, resulting in divergent long-term immunological sequelae during chronic infection.
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Affiliation(s)
- Emily A. Holt
- Department of Biomedical and Health Sciences, University of Vermont, Burlington, VT 05405, USA
| | - Courtney M. Waytashek
- Department of Biomedical and Health Sciences, University of Vermont, Burlington, VT 05405, USA
| | - Katherine J. Sessions
- Department of Biomedical and Health Sciences, University of Vermont, Burlington, VT 05405, USA
| | - Loredana Asarian
- Department of Medicine, Vermont Center for Immunology and Infectious Diseases, Larner College of Medicine, The University of Vermont, Burlington, VT 05405, USA
| | - Karolyn G Lahue
- Department of Biomedical and Health Sciences, University of Vermont, Burlington, VT 05405, USA
| | - Edward J. Usherwood
- Department of Microbiology and Immunology, The Geisel School of Medicine at Dartmouth College, Lebanon, NH 03756, USA
| | - Cory Teuscher
- Department of Medicine, Vermont Center for Immunology and Infectious Diseases, Larner College of Medicine, The University of Vermont, Burlington, VT 05405, USA
| | - Dimitry N. Krementsov
- Department of Biomedical and Health Sciences, University of Vermont, Burlington, VT 05405, USA
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Han X, Clark JJ, Sharma P, Bentley EG, Kipar A, Alsayer M, Ren X, Robinson A, Alaidarous S, Mu Y, Sun Y, Hiscox JA, Zhou EM, Stewart JP, Zhao Q. Amino acids 1811-1960 of myosin heavy chain 9 is involved in murine gammaherpesvirus 68 infection. Virology 2023; 587:109849. [PMID: 37515945 DOI: 10.1016/j.virol.2023.109849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 07/18/2023] [Accepted: 07/20/2023] [Indexed: 07/31/2023]
Abstract
Myosin heavy chain 9 (MYH9) has been identified as a crucial factor in gammaherpesvirus infection. Murine gammaherpesvirus 68 (MHV-68) was used as an appropriate viral model for investigating gammaherpesviruses in vivo and developing antiviral treatments. However, the roles of MYH9 in MHV-68 infection have not been documented. In the study, the relationship between the expression of MYH9 and MHV-68 infection and MYH9 as the antiviral target were analyzed. The results revealed that MYH9 was enriched on the cell surface and co-localized with MHV-68 upon viral infection. Knocking down MYH9 with siRNA or using the specific inhibitor of MYH9 activity, Blebbistatin, resulted in the decreasing of MHV-68 infection. Furthermore, polyclonal antibodies against MYH9 reduced infection by approximately 74% at a dose of 100 μg/ml. The study determined that MYH9 contributes to MHV-68 infection by interacting with viral glycoprotein 150 (gp150) in the BHK-21 cell membrane. The specific region of MYH9, amino acids 1811-1960 (C-150), was identified as the key domain involved in the interaction with MHV-68 gp150 and was found to inhibit MHV-68 infection. Moreover, C-150 was also shown to decrease HSV-1 infection in Vero cells by approximately 73%. Both C-150 and Blebbistatin were found to inhibit MHV-68 replication and reduce histopathological lesions in vivo in C57BL/6J mice. Taken together, these findings suggested that MYH9 is crucial for MHV-68 infection through its interaction with viral gp150 and that C-150 may be a promising antiviral target for inhibiting MHV-68 infection in vitro and in vivo.
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Affiliation(s)
- Ximeng Han
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shannxi, 712100, China; Department of Infection Biology and Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L3 5RF, United Kingdom
| | - Jordan J Clark
- Department of Infection Biology and Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L3 5RF, United Kingdom
| | - Parul Sharma
- Department of Infection Biology and Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L3 5RF, United Kingdom
| | - Eleanor G Bentley
- Department of Infection Biology and Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L3 5RF, United Kingdom
| | - Anja Kipar
- Department of Infection Biology and Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L3 5RF, United Kingdom; Laboratory for Animal Model Pathology, Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Switzerland
| | - Mohammed Alsayer
- Department of Infection Biology and Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L3 5RF, United Kingdom
| | - Xiaolei Ren
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shannxi, 712100, China
| | - Amy Robinson
- Department of Infection Biology and Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L3 5RF, United Kingdom
| | - Sondus Alaidarous
- Department of Infection Biology and Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L3 5RF, United Kingdom
| | - Yang Mu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shannxi, 712100, China
| | - Yani Sun
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shannxi, 712100, China
| | - Julian A Hiscox
- Department of Infection Biology and Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L3 5RF, United Kingdom
| | - En-Min Zhou
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shannxi, 712100, China.
| | - James P Stewart
- Department of Infection Biology and Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L3 5RF, United Kingdom.
| | - Qin Zhao
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shannxi, 712100, China.
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De Neck S, Penrice-Randal R, Clark JJ, Sharma P, Bentley EG, Kirby A, Mega DF, Han X, Owen A, Hiscox JA, Stewart JP, Kipar A. The Stereotypic Response of the Pulmonary Vasculature to Respiratory Viral Infections: Findings in Mouse Models of SARS-CoV-2, Influenza A and Gammaherpesvirus Infections. Viruses 2023; 15:1637. [PMID: 37631979 PMCID: PMC10458810 DOI: 10.3390/v15081637] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/14/2023] [Accepted: 07/24/2023] [Indexed: 08/27/2023] Open
Abstract
The respiratory system is the main target of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the cause of coronavirus disease 19 (COVID-19) where acute respiratory distress syndrome is considered the leading cause of death. Changes in pulmonary blood vessels, among which an endothelialitis/endotheliitis has been particularly emphasized, have been suggested to play a central role in the development of acute lung injury. Similar vascular changes are also observed in animal models of COVID-19. The present study aimed to determine whether the latter are specific for SARS-CoV-2 infection, investigating the vascular response in the lungs of mice infected with SARS-CoV-2 and other respiratory viruses (influenza A and murine gammaherpesvirus) by in situ approaches (histology, immunohistology, morphometry) combined with RNA sequencing and bioinformatic analysis. Non-selective recruitment of monocytes and T and B cells from larger muscular veins and arteries was observed with all viruses, matched by a comparable transcriptional response. There was no evidence of endothelial cell infection in any of the models. Both the morphological investigation and the transcriptomics approach support the interpretation that the lung vasculature in mice mounts a stereotypic response to alveolar and respiratory epithelial damage. This may have implications for the treatment and management of respiratory disease in humans.
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Affiliation(s)
- Simon De Neck
- Laboratory for Animal Model Pathology, Vetsuisse Faculty, Institute of Veterinary Pathology, University of Zurich, 8057 Zurich, Switzerland;
| | - Rebekah Penrice-Randal
- Department of Infection Biology & Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 3RF, UK; (R.P.-R.); (J.J.C.); (P.S.); (E.G.B.); (A.K.); (D.F.M.); (X.H.); (J.A.H.); (J.P.S.)
| | - Jordan J. Clark
- Department of Infection Biology & Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 3RF, UK; (R.P.-R.); (J.J.C.); (P.S.); (E.G.B.); (A.K.); (D.F.M.); (X.H.); (J.A.H.); (J.P.S.)
| | - Parul Sharma
- Department of Infection Biology & Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 3RF, UK; (R.P.-R.); (J.J.C.); (P.S.); (E.G.B.); (A.K.); (D.F.M.); (X.H.); (J.A.H.); (J.P.S.)
| | - Eleanor G. Bentley
- Department of Infection Biology & Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 3RF, UK; (R.P.-R.); (J.J.C.); (P.S.); (E.G.B.); (A.K.); (D.F.M.); (X.H.); (J.A.H.); (J.P.S.)
| | - Adam Kirby
- Department of Infection Biology & Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 3RF, UK; (R.P.-R.); (J.J.C.); (P.S.); (E.G.B.); (A.K.); (D.F.M.); (X.H.); (J.A.H.); (J.P.S.)
| | - Daniele F. Mega
- Department of Infection Biology & Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 3RF, UK; (R.P.-R.); (J.J.C.); (P.S.); (E.G.B.); (A.K.); (D.F.M.); (X.H.); (J.A.H.); (J.P.S.)
| | - Ximeng Han
- Department of Infection Biology & Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 3RF, UK; (R.P.-R.); (J.J.C.); (P.S.); (E.G.B.); (A.K.); (D.F.M.); (X.H.); (J.A.H.); (J.P.S.)
| | - Andrew Owen
- Centre of Excellence in Long-Acting Therapeutics (CELT), Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool L3 3RF, UK;
| | - Julian A. Hiscox
- Department of Infection Biology & Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 3RF, UK; (R.P.-R.); (J.J.C.); (P.S.); (E.G.B.); (A.K.); (D.F.M.); (X.H.); (J.A.H.); (J.P.S.)
| | - James P. Stewart
- Department of Infection Biology & Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 3RF, UK; (R.P.-R.); (J.J.C.); (P.S.); (E.G.B.); (A.K.); (D.F.M.); (X.H.); (J.A.H.); (J.P.S.)
| | - Anja Kipar
- Laboratory for Animal Model Pathology, Vetsuisse Faculty, Institute of Veterinary Pathology, University of Zurich, 8057 Zurich, Switzerland;
- Department of Infection Biology & Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 3RF, UK; (R.P.-R.); (J.J.C.); (P.S.); (E.G.B.); (A.K.); (D.F.M.); (X.H.); (J.A.H.); (J.P.S.)
- Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, University of Helsinki, 00790 Helsinki, Finland
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Gammaherpesvirus Infections in Cattle in Europe. Viruses 2021; 13:v13122337. [PMID: 34960607 PMCID: PMC8709109 DOI: 10.3390/v13122337] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 11/05/2021] [Accepted: 11/08/2021] [Indexed: 11/21/2022] Open
Abstract
The genus Macavirus, subfamily Gammaherpesvirinae, comprises ungulate viruses that infect domestic and wild ruminants and swine. They cause asymptomatic latent infections in reservoir hosts and malignant catarrhal fever in susceptible species. Lung, spleen, bronchial lymph node, and tongue were collected from 448 cattle (348 necropsied, 100 slaughtered) in Switzerland, United Kingdom, Finland, Belgium, and Germany to determine their infection with bovine herpesvirus-6 (BoHV-6) and gammaherpesviruses of other ruminants, i.e., ovine herpesvirus-1 and -2, caprine herpesvirus-2, and bison lymphotropic herpesvirus, using quantitative PCR. Only BoHV-6 was detected, with an overall frequency of 32%, ranging between 22% and 42% in the different countries. Infection was detected across all ages, from one day after birth, and was positively correlated with age. There was no evidence of an association with specific disease processes. In positive animals, BoHV-6 was detected in all organs with high frequency, consistently in the lungs or spleen. Viral loads varied substantially. In BoHV-6-positive gravid cows, organs of fetuses tested negative for infection, indicating that the virus is not vertically transmitted. Our results confirm previous data indicating that BoHV-6 is a commensal of domestic cattle not associated with disease processes and confirm that infections with other macaviruses are rare and sporadic.
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López-Rodríguez DM, Kirillov V, Krug LT, Mesri EA, Andreansky S. A role of hypoxia-inducible factor 1 alpha in Murine Gammaherpesvirus 68 (MHV68) lytic replication and reactivation from latency. PLoS Pathog 2019; 15:e1008192. [PMID: 31809522 PMCID: PMC6975554 DOI: 10.1371/journal.ppat.1008192] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 01/22/2020] [Accepted: 11/05/2019] [Indexed: 12/15/2022] Open
Abstract
The hypoxia-inducible factor 1 alpha (HIF1α) protein and the hypoxic microenvironment are critical for infection and pathogenesis by the oncogenic gammaherpesviruses (γHV), Kaposi sarcoma herpes virus (KSHV) and Epstein-Barr virus (EBV). However, understanding the role of HIF1α during the virus life cycle and its biological relevance in the context of host has been challenging due to the lack of animal models for human γHV. To study the role of HIF1α, we employed the murine gammaherpesvirus 68 (MHV68), a rodent pathogen that readily infects laboratory mice. We show that MHV68 infection induces HIF1α protein and HIF1α-responsive gene expression in permissive cells. siRNA silencing or drug-inhibition of HIF1α reduce virus production due to a global downregulation of viral gene expression. Most notable was the marked decrease in many viral genes bearing hypoxia-responsive elements (HREs) such as the viral G-Protein Coupled Receptor (vGPCR), which is known to activate HIF1α transcriptional activity during KSHV infection. We found that the promoter of MHV68 ORF74 is responsive to HIF1α and MHV-68 RTA. Moreover, Intranasal infection of HIF1αLoxP/LoxP mice with MHV68 expressing Cre- recombinase impaired virus expansion during early acute infection and affected lytic reactivation in the splenocytes explanted from mice. Low oxygen concentrations accelerated lytic reactivation and enhanced virus production in MHV68 infected splenocytes. Thus, we conclude that HIF1α plays a critical role in promoting virus replication and reactivation from latency by impacting viral gene expression. Our results highlight the importance of the mutual interactions of the oxygen-sensing machinery and gammaherpesviruses in viral replication and pathogenesis.
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Affiliation(s)
- Darlah M. López-Rodríguez
- Department of Microbiology and Immunology and Miami Center for AIDS Research, Miami, Florida, United States of America
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Varvara Kirillov
- Department of Molecular Genetics and Microbiology, Stony Brook University, Stony Brook, New York, United States of America
| | - Laurie T. Krug
- Department of Molecular Genetics and Microbiology, Stony Brook University, Stony Brook, New York, United States of America
- IV and AIDS Malignancy Branch, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Enrique A. Mesri
- Department of Microbiology and Immunology and Miami Center for AIDS Research, Miami, Florida, United States of America
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Samita Andreansky
- Department of Microbiology and Immunology and Miami Center for AIDS Research, Miami, Florida, United States of America
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida, United States of America
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, Florida
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7
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Radaelli E, Santagostino SF, Sellers RS, Brayton CF. Immune Relevant and Immune Deficient Mice: Options and Opportunities in Translational Research. ILAR J 2019; 59:211-246. [PMID: 31197363 PMCID: PMC7114723 DOI: 10.1093/ilar/ily026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 12/03/2018] [Indexed: 12/29/2022] Open
Abstract
In 1989 ILAR published a list and description of immunodeficient rodents used in research. Since then, advances in understanding of molecular mechanisms; recognition of genetic, epigenetic microbial, and other influences on immunity; and capabilities in manipulating genomes and microbiomes have increased options and opportunities for selecting mice and designing studies to answer important mechanistic and therapeutic questions. Despite numerous scientific breakthroughs that have benefitted from research in mice, there is debate about the relevance and predictive or translational value of research in mice. Reproducibility of results obtained from mice and other research models also is a well-publicized concern. This review summarizes resources to inform the selection and use of immune relevant mouse strains and stocks, aiming to improve the utility, validity, and reproducibility of research in mice. Immune sufficient genetic variations, immune relevant spontaneous mutations, immunodeficient and autoimmune phenotypes, and selected induced conditions are emphasized.
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Affiliation(s)
- Enrico Radaelli
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Sara F Santagostino
- Department of Safety Assessment, Genentech, Inc., South San Francisco, California
| | | | - Cory F Brayton
- Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Hendrikse LD, Kambli A, Kayko C, Canuti M, Rodrigues B, Stevens B, Vashon J, Lang AS, Needle DB, Troyer RM. Identification of a Novel Gammaherpesvirus in Canada lynx ( Lynx canadensis). Viruses 2019; 11:v11040363. [PMID: 31010021 PMCID: PMC6520957 DOI: 10.3390/v11040363] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 04/15/2019] [Accepted: 04/17/2019] [Indexed: 12/25/2022] Open
Abstract
Gammaherpesviruses (GHVs) infect many animal species and are associated with lymphoproliferative disorders in some. Previously, we identified several novel GHVs in North American felids; however, a GHV had never been identified in Canada lynx (Lynx canadensis). We, therefore, hypothesized the existence of an unidentified GHV in lynx. Using degenerate nested and subsequently virus-specific PCR, we amplified and sequenced 3.4 kb of DNA from a novel GHV in lynx, which we named Lynx canadensis gammaherpesvirus 1 (LcaGHV1). Phylogenetic analysis determined that LcaGHV1 is a distinct GHV species belonging to the genus Percavirus. We then estimated the prevalence of LcaGHV1 in lynx by developing a PCR-based assay and detected LcaGHV1 DNA in 36% (95% CI: 22-53%) of lynx spleen DNA samples from Maine, USA and 17% (95% CI: 8-31%) from Newfoundland, Canada. The LcaGHV1 DNA sequences from Maine and Newfoundland lynx were nearly identical to each other (two nucleotide substitutions in 3.4 kb), suggesting that the unique lynx subspecies present on the island of Newfoundland (Lynx canadensis subsolanus) is infected with virus that very closely resembles virus found in mainland lynx. The potential ecologic and pathologic consequences of this novel virus for Canada lynx populations warrant further study.
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Affiliation(s)
- Liam D Hendrikse
- Department of Microbiology and Immunology, University of Western Ontario, 1151 Richmond St., London, ON N6A 5C1, Canada.
| | - Ankita Kambli
- Department of Microbiology and Immunology, University of Western Ontario, 1151 Richmond St., London, ON N6A 5C1, Canada.
| | - Caroline Kayko
- Map and Data Centre, Western Libraries, University of Western Ontario, 1151 Richmond St., London, ON N6A 5C1, Canada.
| | - Marta Canuti
- Department of Biology, Memorial University of Newfoundland, 232 Elizabeth Ave., St. John's, NF A1B 3X9, Canada.
| | - Bruce Rodrigues
- Wildlife Division, Newfoundland and Labrador Department of Fisheries and Land Resources, P.O. Box 2007, Corner Brook, NF A2H 7S1, Canada.
| | - Brian Stevens
- New Hampshire Veterinary Diagnostic Laboratory, College of Life Sciences and Agriculture, University of New Hampshire, 21 Botanical Lane, Durham, NH 03824, USA.
- Canadian Wildlife Health Cooperative⁻Ontario/Nunavut, Guelph, ON N1G 2W1, Canada.
| | - Jennifer Vashon
- Maine Department of Inland Fisheries and Wildlife, 650 State St., Bangor, ME 04401, USA.
| | - Andrew S Lang
- Department of Biology, Memorial University of Newfoundland, 232 Elizabeth Ave., St. John's, NF A1B 3X9, Canada.
| | - David B Needle
- New Hampshire Veterinary Diagnostic Laboratory, College of Life Sciences and Agriculture, University of New Hampshire, 21 Botanical Lane, Durham, NH 03824, USA.
| | - Ryan M Troyer
- Department of Microbiology and Immunology, University of Western Ontario, 1151 Richmond St., London, ON N6A 5C1, Canada.
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Bortz E, Wu TT, Patel P, Whitelegge JP, Sun R. Proteomics of Bronchoalveolar Lavage Fluid Reveals a Lung Oxidative Stress Response in Murine Herpesvirus-68 Infection. Viruses 2018; 10:v10120670. [PMID: 30486363 PMCID: PMC6316452 DOI: 10.3390/v10120670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 11/15/2018] [Accepted: 11/20/2018] [Indexed: 12/25/2022] Open
Abstract
Murine herpesvirus-68 (MHV-68) productively infects mouse lungs, exhibiting a complex pathology characteristic of both acute viral infections and chronic respiratory diseases. We sought to discover proteins differentially expressed in bronchoalveolar lavage (BAL) from mice infected with MHV-68. Mice were infected intranasally with MHV-68. After nine days, as the lytic phase of infection resolved, differential BAL proteins were identified by two-dimensional (2D) electrophoresis and mass spectrometry. Of 23 unique proteins, acute phase proteins, vitamin A transport, and oxidative stress response factors Pdx6 and EC-SOD (Sod3) were enriched. Correspondingly, iNOS2 was induced in lung tissue by seven days post-infection. Oxidative stress was partly a direct result of MHV-68 infection, as reactive oxygen species (ROS) were induced in cultured murine NIH3T3 fibroblasts and human lung A549 cells infected with MHV-68. Finally, mice infected with a recombinant MHV-68 co-expressing inflammatory cytokine murine interleukin 6 (IL6) showed exacerbated oxidative stress and soluble type I collagen characteristic of tissue recovery. Thus, oxidative stress appears to be a salient feature of MHV-68 pathogenesis, in part caused by lytic replication of the virus and IL6. Proteins and small molecules in lung oxidative stress networks therefore may provide new therapeutic targets to ameliorate respiratory virus infections.
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Affiliation(s)
- Eric Bortz
- Department of Biological Sciences, University of Alaska Anchorage, Anchorage, AK 99508, USA.
| | - Ting-Ting Wu
- Department of Molecular & Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA.
| | - Parthive Patel
- Center for Molecular Biology and German Cancer Research Center (DKFZ), University of Heidelberg (ZMBH), 69120 Heidelberg, Germany.
| | - Julian P Whitelegge
- The Pasarow Mass Spectrometry Laboratory & the Jane and Terry Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA.
| | - Ren Sun
- Department of Molecular & Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA.
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10
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Pennington MR, Ledbetter EC, Van de Walle GR. New Paradigms for the Study of Ocular Alphaherpesvirus Infections: Insights into the Use of Non-Traditional Host Model Systems. Viruses 2017; 9:E349. [PMID: 29156583 PMCID: PMC5707556 DOI: 10.3390/v9110349] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 11/14/2017] [Accepted: 11/16/2017] [Indexed: 12/22/2022] Open
Abstract
Ocular herpesviruses, most notably human alphaherpesvirus 1 (HSV-1), canid alphaherpesvirus 1 (CHV-1) and felid alphaherpesvirus 1 (FHV-1), infect and cause severe disease that may lead to blindness. CHV-1 and FHV-1 have a pathogenesis and induce clinical disease in their hosts that is similar to HSV-1 ocular infections in humans, suggesting that infection of dogs and cats with CHV-1 and FHV-1, respectively, can be used as a comparative natural host model of herpesvirus-induced ocular disease. In this review, we discuss both strengths and limitations of the various available model systems to study ocular herpesvirus infection, with a focus on the use of these non-traditional virus-natural host models. Recent work has demonstrated the robustness and reproducibility of experimental ocular herpesvirus infections in dogs and cats, and, therefore, these non-traditional models can provide additional insights into the pathogenesis of ocular herpesvirus infections.
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Affiliation(s)
- Matthew R Pennington
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.
| | - Eric C Ledbetter
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.
| | - Gerlinde R Van de Walle
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.
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11
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Hajnická V, Kúdelová M, Štibrániová I, Slovák M, Bartíková P, Halásová Z, Pančík P, Belvončíková P, Vrbová M, Holíková V, Hails RS, Nuttall PA. Tick-Borne Transmission of Murine Gammaherpesvirus 68. Front Cell Infect Microbiol 2017; 7:458. [PMID: 29164067 PMCID: PMC5674927 DOI: 10.3389/fcimb.2017.00458] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 10/16/2017] [Indexed: 12/27/2022] Open
Abstract
Herpesviruses are a large group of DNA viruses infecting mainly vertebrates. Murine gammaherpesvirus 68 (MHV68) is often used as a model in studies of the pathogenesis of clinically important human gammaherpesviruses such as Epstein-Barr virus and Kaposi's sarcoma-associated herpesvirus. This rodent virus appears to be geographically widespread; however, its natural transmission cycle is unknown. Following detection of MHV68 in field-collected ticks, including isolation of the virus from tick salivary glands and ovaries, we investigated whether MHV68 is a tick-borne virus. Uninfected Ixodes ricinus ticks were shown to acquire the virus by feeding on experimentally infected laboratory mice. The virus survived tick molting, and the molted ticks transmitted the virus to uninfected laboratory mice on which they subsequently fed. MHV68 was isolated from the tick salivary glands, consistent with transmission via tick saliva. The virus survived in ticks without loss of infectivity for at least 120 days, and subsequently was transmitted vertically from one tick generation to the next, surviving more than 500 days. Furthermore, the F1 generation (derived from F0 infected females) transmitted MHV68 to uninfected mice on which they fed, with MHV68 M3 gene transcripts detected in blood, lung, and spleen tissue of mice on which F1 nymphs and F1 adults engorged. These experimental data fulfill the transmission criteria that define an arthropod-borne virus (arbovirus), the largest biological group of viruses. Currently, African swine fever virus (ASFV) is the only DNA virus recognized as an arbovirus. Like ASFV, MHV68 showed evidence of pathogenesis in ticks. Previous studies have reported MHV68 in free-living ticks and in mammals commonly infested with I. ricinus, and neutralizing antibodies to MHV68 have been detected in large mammals (e.g., deer) including humans. Further studies are needed to determine if these reports are the result of tick-borne transmission of MHV68 in nature, and whether humans are at risk of infection.
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Affiliation(s)
- Valeria Hajnická
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Marcela Kúdelová
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Iveta Štibrániová
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Mirko Slovák
- Institute of Zoology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Pavlína Bartíková
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Zuzana Halásová
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Peter Pančík
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Petra Belvončíková
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Michaela Vrbová
- Department of Microbiology and Virology, Comenius University, Bratislava, Slovakia
| | - Viera Holíková
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | | | - Patricia A Nuttall
- Centre for Ecology and Hydrology, Wallingford, United Kingdom.,Department of Zoology, University of Oxford, Oxford, United Kingdom
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12
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Development and application of a quantitative PCR assay to study equine herpesvirus 5 invasion and replication in equine tissues in vitro and in vivo. J Virol Methods 2017; 248:44-53. [PMID: 28455133 DOI: 10.1016/j.jviromet.2017.04.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 04/21/2017] [Accepted: 04/24/2017] [Indexed: 12/20/2022]
Abstract
Equine herpesvirus 5 (EHV-5) infection is associated with pulmonary fibrosis in horses, but further studies on EHV-5 persistence in equine cells are needed to fully understand viral and host contributions to disease pathogenesis. Our aim was to develop a quantitative PCR (qPCR) assay to measure EHV-5 viral copy number in equine cell cultures, blood lymphocytes, and nasal swabs of horses. Furthermore, we used a recently developed equine primary respiratory cell culture system to study EHV-5 pathogenesis at the respiratory tract. PCR primers and a probe were designed to target gene E11 of the EHV-5 genome. Sensitivity and repeatability were established, and specificity was verified by testing multiple isolates of EHV-5, as well as DNA from other equine herpesviruses. Four-week old fully differentiated (mature), newly seeded (immature) primary equine respiratory epithelial cell (ERECs), and equine dermal cell cultures were inoculated with EHV-5 and the cells and supernatants collected daily for 14days. Blood lymphocytes and nasal swabs were collected from horses experimentally infected with equine herpesvirus 1 (EHV-1). The qPCR assay detected EHV-5 at stable concentrations throughout 14days in inoculated mature EREC and equine dermal cell cultures (peaking at 202 and 5861 viral genomes per 106 cellular β actin, respectively). EHV-5 copies detected in the immature EREC cultures increased over 14days and reached levels greater than 10,000 viral genomes per 106 cellular β actin. Moreover, EHV-5 was detected in the lymphocytes of 76% of horses and in the nasal swabs of 84% of horses experimentally infected with EHV-1 pre-inoculation with EHV-1. Post-inoculation with EHV-1, EHV-5 was detected in lymphocytes of 52% of horses while EHV-5 levels in nasal swabs were not significantly different from pre-inoculation levels. In conclusion, qPCR was a reliable technique to investigate viral load in in vivo and in vitro samples, and EHV-5 replication in equine epithelial cells may be influenced by cellular stages of differentiation.
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13
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Fernández-Aguilar X, Esperón F, Cabezón O, Velarde R, Mentaberre G, Delicado V, Muñoz MJ, Serrano E, Lavín S, López-Olvera JR. Identification of a gammaherpesvirus belonging to the malignant catarrhal fever group of viruses in Pyrenean chamois (Rupicapra p. pyrenaica). Arch Virol 2016; 161:3249-53. [DOI: 10.1007/s00705-016-3011-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 08/04/2016] [Indexed: 11/24/2022]
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14
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Deletion of Murid Herpesvirus 4 ORF63 Affects the Trafficking of Incoming Capsids toward the Nucleus. J Virol 2015; 90:2455-72. [PMID: 26676769 DOI: 10.1128/jvi.02942-15] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 12/08/2015] [Indexed: 12/19/2022] Open
Abstract
UNLABELLED Gammaherpesviruses are important human and animal pathogens. Despite the fact that they display the classical architecture of herpesviruses, the function of most of their structural proteins is still poorly defined. This is especially true for tegument proteins. Interestingly, a potential role in immune evasion has recently been proposed for the tegument protein encoded by Kaposi's sarcoma-associated herpesvirus open reading frame 63 (ORF63). To gain insight about the roles of ORF63 in the life cycle of a gammaherpesvirus, we generated null mutations in the ORF63 gene of murid herpesvirus 4 (MuHV-4). We showed that disruption of ORF63 was associated with a severe MuHV-4 growth deficit both in vitro and in vivo. The latter deficit was mainly associated with a defect of replication in the lung but did not affect the establishment of latency in the spleen. From a functional point of view, inhibition of caspase-1 or the inflammasome did not restore the growth of the ORF63-deficient mutant, suggesting that the observed deficit was not associated with the immune evasion mechanism identified previously. Moreover, this growth deficit was also not associated with a defect in virion egress from the infected cells. In contrast, it appeared that MuHV-4 ORF63-deficient mutants failed to address most of their capsids to the nucleus during entry into the host cell, suggesting that ORF63 plays a role in capsid movement. In the future, ORF63 could therefore be considered a target to block gammaherpesvirus infection at a very early stage of the infection. IMPORTANCE The important diseases caused by gammaherpesviruses in human and animal populations justify a better understanding of their life cycle. In particular, the role of most of their tegument proteins is still largely unknown. In this study, we used murid herpesvirus 4, a gammaherpesvirus infecting mice, to decipher the role of the protein encoded by the viral ORF63 gene. We showed that the absence of this protein is associated with a severe growth deficit both in vitro and in vivo that was mainly due to impaired migration of viral capsids toward the nucleus during entry. Together, our results provide new insights about the life cycle of gammaherpesviruses and could allow the development of new antiviral strategies aimed at blocking gammaherpesvirus infection at the very early stages.
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15
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York AG, Williams KJ, Argus JP, Zhou QD, Brar G, Vergnes L, Gray EE, Zhen A, Wu NC, Yamada DH, Cunningham CR, Tarling EJ, Wilks MQ, Casero D, Gray DH, Yu AK, Wang ES, Brooks DG, Sun R, Kitchen SG, Wu TT, Reue K, Stetson DB, Bensinger SJ. Limiting Cholesterol Biosynthetic Flux Spontaneously Engages Type I IFN Signaling. Cell 2015; 163:1716-29. [PMID: 26686653 DOI: 10.1016/j.cell.2015.11.045] [Citation(s) in RCA: 303] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 10/15/2015] [Accepted: 11/18/2015] [Indexed: 01/04/2023]
Abstract
Cellular lipid requirements are achieved through a combination of biosynthesis and import programs. Using isotope tracer analysis, we show that type I interferon (IFN) signaling shifts the balance of these programs by decreasing synthesis and increasing import of cholesterol and long chain fatty acids. Genetically enforcing this metabolic shift in macrophages is sufficient to render mice resistant to viral challenge, demonstrating the importance of reprogramming the balance of these two metabolic pathways in vivo. Unexpectedly, mechanistic studies reveal that limiting flux through the cholesterol biosynthetic pathway spontaneously engages a type I IFN response in a STING-dependent manner. The upregulation of type I IFNs was traced to a decrease in the pool size of synthesized cholesterol and could be inhibited by replenishing cells with free cholesterol. Taken together, these studies delineate a metabolic-inflammatory circuit that links perturbations in cholesterol biosynthesis with activation of innate immunity.
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Affiliation(s)
- Autumn G York
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Kevin J Williams
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Joseph P Argus
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Quan D Zhou
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Gurpreet Brar
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Laurent Vergnes
- Department of Human Genetics, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA 90095, USA
| | - Elizabeth E Gray
- Department of Immunology, University of Washington, 750 Republican Street, Box 358059, Seattle, WA 98109, USA
| | - Anjie Zhen
- Division of Hematology/Oncology, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA 90095, USA; UCLA AIDS Institute and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, Los Angeles, CA 90095, USA
| | - Nicholas C Wu
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Douglas H Yamada
- Immuno-Oncology Discovery Research; Janssen Research & Development, LLC, Spring House, PA 19477, USA
| | - Cameron R Cunningham
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Elizabeth J Tarling
- Division of Cardiology, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Moses Q Wilks
- Center for Advanced Medical Imaging Sciences, Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - David Casero
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA 90095, USA
| | - David H Gray
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Amy K Yu
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Eric S Wang
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - David G Brooks
- Princess Margaret Cancer Center, Immune Therapy Program, University Health Network, Toronto, ON M5G 2M9, Canada; Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Ren Sun
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Scott G Kitchen
- Division of Hematology/Oncology, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA 90095, USA; UCLA AIDS Institute and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, Los Angeles, CA 90095, USA
| | - Ting-Ting Wu
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Karen Reue
- Department of Human Genetics, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Daniel B Stetson
- Department of Immunology, University of Washington, 750 Republican Street, Box 358059, Seattle, WA 98109, USA
| | - Steven J Bensinger
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Pathology and Laboratory Medicine, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA 90095, USA.
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16
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Leeming GH, Kipar A, Hughes DJ, Bingle L, Bennett E, Moyo NA, Tripp RA, Bigley AL, Bingle CD, Sample JT, Stewart JP. Gammaherpesvirus infection modulates the temporal and spatial expression of SCGB1A1 (CCSP) and BPIFA1 (SPLUNC1) in the respiratory tract. J Transl Med 2015; 95:610-24. [PMID: 25531566 PMCID: PMC4450743 DOI: 10.1038/labinvest.2014.162] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 10/23/2014] [Accepted: 11/11/2014] [Indexed: 11/09/2022] Open
Abstract
Murine γ-herpesvirus 68 (MHV-68) infection of Mus musculus-derived strains of mice is an established model of γ-herpesvirus infection. We have previously developed an alternative system using a natural host, the wood mouse (Apodemus sylvaticus), and shown that the MHV-68 M3 chemokine-binding protein contributes significantly to MHV-68 pathogenesis. Here we demonstrate in A. sylvaticus using high-density micro-arrays that M3 influences the expression of genes involved in the host response including Scgb1a1 and Bpifa1 that encode potential innate defense proteins secreted into the respiratory tract. Further analysis of MHV-68-infected animals showed that the levels of both protein and RNA for SCGB1A1 and BPIFA1 were decreased at day 7 post infection (p.i.) but increased at day 14 p.i. as compared with M3-deficient and mock-infected animals. The modulation of expression was most pronounced in bronchioles but was also present in the bronchi and trachea. Double staining using RNA in situ hybridization and immunohistology demonstrated that much of the BPIFA1 expression occurs in club cells along with SCGB1A1 and that BPIFA1 is stored within granules in these cells. The increase in SCGB1A1 and BPIFA1 expression at day 14 p.i. was associated with the differentiation of club cells into mucus-secreting cells. Our data highlight the role of club cells and the potential of SCGB1A1 and BPIFA1 as innate defense mediators during respiratory virus infection.
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Affiliation(s)
- Gail H Leeming
- Department of Infection Biology, University of Liverpool, Liverpool, UK,Department of Veterinary Pathology, School of Veterinary Science, University of Liverpool, Liverpool, UK
| | - Anja Kipar
- Department of Infection Biology, University of Liverpool, Liverpool, UK,Department of Veterinary Pathology, School of Veterinary Science, University of Liverpool, Liverpool, UK,Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - David J Hughes
- Department of Infection Biology, University of Liverpool, Liverpool, UK
| | - Lynne Bingle
- Academic Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
| | - Elaine Bennett
- Department of Infection Biology, University of Liverpool, Liverpool, UK
| | - Nathifa A Moyo
- Department of Infection Biology, University of Liverpool, Liverpool, UK
| | - Ralph A Tripp
- Department of Infectious Diseases, University of Georgia, Athens, GA, USA
| | - Alison L Bigley
- Investigative and Translational Pathology, AstraZeneca, R&D Innovative Medicines, Global Safety Assessment, Macclesfield, UK
| | - Colin D Bingle
- Academic Unit of Respiratory Medicine, Department of Infection and Immunity, University of Sheffield, Sheffield, UK
| | - Jeffery T Sample
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - James P Stewart
- Department of Infection Biology, University of Liverpool, Liverpool, UK,Department of Infection Biology, University of Liverpool, Liverpool Science Park IC2, 146 Brownlow Hill, Liverpool L3 5RF, UK. E-mail:
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17
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Frederico B, Chao B, Lawler C, May JS, Stevenson PG. Subcapsular sinus macrophages limit acute gammaherpesvirus dissemination. J Gen Virol 2015; 96:2314-2327. [PMID: 25872742 PMCID: PMC4681069 DOI: 10.1099/vir.0.000140] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Lymphocyte proliferation, mobility and longevity make them prime targets for virus infection. Myeloid cells that process and present environmental antigens to lymphocytes are consequently an important line of defence. Subcapsular sinus macrophages (SSMs) filter the afferent lymph and communicate with B-cells. How they interact with B-cell-tropic viruses is unknown. We analysed their encounter with murid herpesvirus-4 (MuHV-4), an experimentally accessible gammaherpesvirus related to Kaposi's sarcoma-associated herpesvirus. MuHV-4 disseminated via lymph nodes, and intranasally or subcutaneously inoculated virions readily infected SSMs. However, this infection was poorly productive. SSM depletion with clodronate-loaded liposomes or with diphtheria toxin in CD169–diphtheria toxin receptor transgenic mice increased B-cell infection and hastened virus spread to the spleen. Dendritic cells provided the main route to B-cells, and SSMs slowed host colonization, apparently by absorbing virions non-productively from the afferent lymph.
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Affiliation(s)
- Bruno Frederico
- Division of Virology, Department of Pathology, University of Cambridge, Cambridge, UK
| | - Brittany Chao
- Division of Virology, Department of Pathology, University of Cambridge, Cambridge, UK
| | - Clara Lawler
- Sir Albert Sakzewski Virus Research Centre, Clinical Medical Virology Centre, School of Chemistry and Molecular Biosciences, Royal Children's Hospital and University of Queensland, Brisbane, Australia
| | - Janet S May
- Division of Virology, Department of Pathology, University of Cambridge, Cambridge, UK
| | - Philip G Stevenson
- Division of Virology, Department of Pathology, University of Cambridge, Cambridge, UK.,Sir Albert Sakzewski Virus Research Centre, Clinical Medical Virology Centre, School of Chemistry and Molecular Biosciences, Royal Children's Hospital and University of Queensland, Brisbane, Australia
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18
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Aligo J, Brosnan K, Walker M, Emmell E, Mikkelsen SR, Burleson GR, Burleson FG, Volk A, Weinstock D. Murine gammaherpesvirus-68 (MHV-68) is not horizontally transmitted amongst laboratory mice by cage contact. J Immunotoxicol 2014; 12:330-41. [PMID: 25412621 DOI: 10.3109/1547691x.2014.980020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Murine gammaherpesvirus-68 (MHV-68), a natural pathogen of mice, is being evaluated as a model of Epstein Barr Virus (EBV) infection for use in investigation of the effects of immunomodulatory therapy on herpesvirus pathogenesis in humans. Immunosuppressive agents are used for treatment of a variety of autoimmune diseases as well as for prevention of tissue rejection after organ transplantation and can result in recrudescence of latent herpesvirus infections. Prior to examination of MHV-68 as a suitable model for EBV, better characterization of the MHV-68 model was desirable. Characterization of the MHV-68 model involved development of assays for detecting virus and for demonstration of safety when present in murine colonies. Limited information is available in the literature regarding MHV-68 transmission, although recent reports indicate the virus is not horizontally spread in research facilities. To further determine transmission potential, immunocompetent and immunodeficient mice were infected with MHV-68 and co-habitated with naïve animals. Molecular pathology assays were developed to characterize the MHV-68 model and to determine viral transmission. Horizontal transmission of virus was not observed from infected animals to naïve cagemates after fluorescence microscopy assays and quantitative PCR (qPCR). Serologic analysis complemented these studies and was used as a method of monitoring infection amongst murine colonies. Overall, these findings demonstrate that MHV-68 infection can be controlled and monitored in murine research facilities, and the potential for unintentional infection is low.
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Affiliation(s)
- Jason Aligo
- Biologics Toxicology, Janssen Research and Development, LLC , Spring House, PA , USA and
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19
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Williamson D. Approaches to modelling the human immune response in transition of candidates from research to development. J Immunol Res 2014; 2014:395302. [PMID: 24949489 PMCID: PMC4033477 DOI: 10.1155/2014/395302] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Accepted: 03/11/2014] [Indexed: 11/28/2022] Open
Abstract
This review considers the steps required to evaluate a candidate biodefense vaccine or therapy as it emerges from the research phase, in order to transition it to development. The options for preclinical modelling of efficacy are considered in the context of the FDA's Animal Rule.
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Affiliation(s)
- Diane Williamson
- Defence Science and Technology Laboratory (DSTL), Porton Down, Salisbury, Wilts SP4 0JQ, UK
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20
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Abstract
Progressive lung fibrosis in humans, typified by idiopathic pulmonary fibrosis (IPF), is a serious cause of morbidity and mortality in people. Similar diseases have been described in dogs, cats, and horses. The cause and pathogenesis of such diseases in all species is poorly understood. There is growing evidence in human medicine that IPF is a manifestation of abnormal wound repair in response to epithelial injury. Because viruses can contribute to epithelial injury, there is increasing interest in a possible role of viruses, particularly gammaherpesviruses, in the pathogenesis of pulmonary fibrosis. This review provides background information on progressive fibrosing lung disease in human and veterinary medicine and summarizes the evidence for an association between gammaherpesvirus infection and pulmonary fibrosis, especially Epstein-Barr virus in human pulmonary fibrosis, and equine herpesvirus 5 in equine multinodular pulmonary fibrosis. Data derived from experimental lung infection in mice with the gammaherpesvirus murine herpesvirus are presented, emphasizing the host and viral factors that may contribute to lung fibrosis. The experimental data are considered in the context of the pathogenesis of naturally occurring pulmonary fibrosis in humans and horses.
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Affiliation(s)
- K. J. Williams
- Department of Pathobiology and Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
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21
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Keebaugh ES, Schlenke TA. Insights from natural host-parasite interactions: the Drosophila model. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2014; 42:111-23. [PMID: 23764256 PMCID: PMC3808516 DOI: 10.1016/j.dci.2013.06.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 06/01/2013] [Accepted: 06/01/2013] [Indexed: 05/15/2023]
Abstract
Immune responses against opportunistic pathogens have been extensively studied in Drosophila, leading to a detailed map of the genetics behind innate immunity networks including the Toll, Imd, Jak-Stat, and JNK pathways. However, immune mechanisms of other organisms, such as plants, have primarily been investigated using natural pathogens. It was the use of natural pathogens in plant research that revealed the plant R-Avr system, a specialized immune response derived from antagonistic coevolution between plant immune proteins and their natural pathogens' virulence proteins. Thus, we recommend that researchers begin to use natural Drosophila pathogens to identify novel immune strategies that may have arisen through antagonistic coevolution with common natural pathogens. In this review, we address the benefits of using natural pathogens in research, describe the known natural pathogens of Drosophila, and discuss the future prospects for research on natural pathogens of Drosophila.
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Affiliation(s)
- Erin S Keebaugh
- Department of Biology, Emory University, 1510 Clifton Road, Atlanta, GA, United States.
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22
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Abstract
Viruses have long been studied not only for their pathology and associated disease but also as model systems for understanding cellular and immunological processes. Rodent herpesvirus Peru (RHVP) is a recently characterized rhadinovirus related to murine gammaherpesvirus 68 (MHV68) and Kaposi's sarcoma-associated herpesvirus (KSHV) that establishes acute and latent infection in laboratory mice. RHVP encodes numerous unique proteins that we hypothesize might facilitate host immune evasion during infection. We report here that open reading frame (ORF) R17 encodes a high-affinity chemokine binding protein that broadly recognizes human and murine CC and C chemokines. The interaction of R17 with chemokines is generally characterized by rapid association kinetics, and in the case of CCL3, CCL4, CCL5, CCL24, and XCL1, extremely stable complexes are formed. Functionally, R17 potently inhibited CCL2-driven chemotaxis of the human monocytic cell line THP-1, CCL3-driven chemotaxis of peripheral blood mononuclear cells, and CCL2-mediated calcium flux. Our studies also reveal that R17 binds to glycosaminoglycans (GAGs) in a process dependent upon two BBXB motifs and that chemokine and GAG binding can occur simultaneously at distinct sites. Collectively, these studies suggest that R17 may play a role in RHVP immune evasion through the targeted sabotage of chemokine-mediated immune surveillance.
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Experimental induction of pulmonary fibrosis in horses with the gammaherpesvirus equine herpesvirus 5. PLoS One 2013; 8:e77754. [PMID: 24147074 PMCID: PMC3795644 DOI: 10.1371/journal.pone.0077754] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Accepted: 09/09/2013] [Indexed: 11/19/2022] Open
Abstract
Gammaherpesviruses (γHV) are implicated in the pathogenesis of pulmonary fibrosis in humans and murine models of lung fibrosis, however there is little direct experimental evidence that such viruses induce lung fibrosis in the natural host. The equine γHV EHV 5 is associated with equine multinodular pulmonary fibrosis (EMPF), a progressive fibrosing lung disease in its natural host, the horse. Experimental reproduction of EMPF has not been attempted to date. We hypothesized that inoculation of EHV 5 isolated from cases of EMPF into the lungs of clinically normal horses would induce lung fibrosis similar to EMPF. Neutralizing antibody titers were measured in the horses before and after inoculation with EHV 5. PCR and virus isolation was used to detect EHV 5 in antemortem blood and BAL samples, and in tissues collected postmortem. Nodular pulmonary fibrosis and induction of myofibroblasts occurred in EHV 5 inoculated horses. Mean lung collagen in EHV 5 inoculated horses (80 µg/mg) was significantly increased compared to control horses (26 µg/mg) (p < 0.5), as was interstitial collagen (32.6% ± 1.2% vs 23% ± 1.4%) (mean ± SEM; p < 0.001). Virus was difficult to detect in infected horses throughout the experiment, although EHV 5 antigen was detected in the lung by immunohistochemistry. We conclude that the γHV EHV 5 can induce lung fibrosis in the horse, and hypothesize that induction of fibrosis occurs while the virus is latent within the lung. This is the first example of a γHV inducing lung fibrosis in the natural host.
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Salisbury AM, Begon M, Dove W, Niklasson B, Stewart JP. Ljungan virus is endemic in rodents in the UK. Arch Virol 2013; 159:547-51. [PMID: 23665770 DOI: 10.1007/s00705-013-1731-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 04/12/2013] [Indexed: 01/28/2023]
Abstract
Ljungan virus is a recently identified member of the family Picornaviridae that was isolated from bank voles in Sweden. LjV has been associated with [corrected] type 1 diabetes-like symptoms and myocarditis in bank voles (Myodes glareolus), and it has been suggested that it has zoonotic potential. Here, we show for the first time that Ljungan virus is prevalent (20-27 % positive by PCR) in four species of UK rodent (Myodes glareolus [bank vole], Apodemus sylvaticus [wood mouse], Microtus agrestis [field vole] and Mus musculus [house mouse]). Sequence analysis showed that Ljungan virus of genotypes 1 and 2 were present, although genotype 1 was more prevalent and more frequently associated with brain tissue. This study highlights the prevalence of Ljungan virus in the UK and the need for assessment [corrected] of its zoonotic potential.
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Affiliation(s)
- Anne-Marie Salisbury
- Department of Infection Biology, University of Liverpool, Liverpool Science Park IC2, 146 Brownlow Hill, Liverpool, L3 5RF, UK
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25
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Knowles SCL, Fenton A, Pedersen AB. Epidemiology and fitness effects of wood mouse herpesvirus in a natural host population. J Gen Virol 2012; 93:2447-2456. [PMID: 22915692 PMCID: PMC3542127 DOI: 10.1099/vir.0.044826-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 08/16/2012] [Indexed: 11/18/2022] Open
Abstract
Rodent gammaherpesviruses have become important models for understanding human herpesvirus diseases. In particular, interactions between murid herpesvirus 4 and Mus musculus (a non-natural host species) have been extensively studied under controlled laboratory conditions. However, several fundamental aspects of murine gammaherpesvirus biology are not well understood, including how these viruses are transmitted from host to host, and their impacts on host fitness under natural conditions. Here, we investigate the epidemiology of a gammaherpesvirus in free-living wood mice (Apodemus sylvaticus) and bank voles (Myodes glareolus) in a 2-year longitudinal study. Wood mouse herpesvirus (WMHV) was the only herpesvirus detected and occurred frequently in wood mice and also less commonly in bank voles. Strikingly, WMHV infection probability was highest in reproductively active, heavy male mice. Infection risk also showed a repeatable seasonal pattern, peaking in spring and declining through the summer. We show that this seasonal decline can be at least partly attributed to reduced recapture of WMHV-infected adults. These results suggest that male reproductive behaviours could provide an important natural route of transmission for these viruses. They also suggest that gammaherpesvirus infection may have significant detrimental effects in wild hosts, questioning the view that these viruses have limited impacts in natural, co-evolved host species.
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Affiliation(s)
- Sarah C. L. Knowles
- Centre for Immunity, Infection and Evolution (CIIE), Institute of Evolutionary Biology, School of Biological Sciences, The University of Edinburgh, West Mains Road, Edinburgh, EH9 3JT, UK
| | - Andy Fenton
- Institute of Integrative Biology, University of Liverpool, Biosciences Building, Crown Street, Liverpool, L69 7ZB, UK
| | - Amy B. Pedersen
- Centre for Immunity, Infection and Evolution (CIIE), Institute of Evolutionary Biology, School of Biological Sciences, The University of Edinburgh, West Mains Road, Edinburgh, EH9 3JT, UK
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26
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An oncolytic adenovirus enhanced for toll-like receptor 9 stimulation increases antitumor immune responses and tumor clearance. Mol Ther 2012; 20:2076-86. [PMID: 22828500 DOI: 10.1038/mt.2012.137] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Oncolytic viruses represent a multifaceted tool for cancer treatment. In addition to specific killing of cancer cells (oncolysis), these agents also provide danger signals prompting the immune system to stimulate an antitumor immune response. To increase adenovirus adjuvancy, we engineered the genome of Ad5D24 by inserting 18 immunostimulatory islands (Ad5D24-CpG). The toxicity and immunogenicity profile of Ad5D24-CpG showed that the safety of the maternal virus was retained. The efficacy of the CpG-enriched virus was assessed in a xenograft model of lung cancer where a significant increase in antitumor effect was seen in comparison with controls. When the experiment was repeated in animal depleted of natural killer (NK) cells, Ad5D24-CpG lost its advantage. The same was seen when Toll-like receptor (TLR)9 was blocked systemically. In a syngeneic model of melanoma (B16-OVA), we observed a significant increase of OVA-specific T cells and a decrease of activation of myeloid-derived suppressor cells in Ad5D24-CpG-treated mice. In conclusion, we have generated the first genetically modified oncolytic adenovirus backbone able to enhance TLR9-stimulation for increased antitumor activity.
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27
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Hughes DJ, Kipar A, Leeming G, Sample JT, Stewart JP. Experimental infection of laboratory-bred bank voles (Myodes glareolus) with murid herpesvirus 4. Arch Virol 2012; 157:2207-12. [PMID: 22782137 DOI: 10.1007/s00705-012-1397-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 05/21/2012] [Indexed: 11/26/2022]
Abstract
MuHV-4 is a natural pathogen of rodents of the genus Apodemus (e.g., wood mice, yellow-necked mice) and Myodes glareolus (bank voles). We report experimental MuHV-4 infection of bank voles in comparison with infection of A. sylvaticus (wood mice) and BALB/c mice. Like in wood mice, the level of productive replication in the lungs of bank voles was significantly lower than in BALB/c mice. In contrast to other hosts, however, the level of latent infection in the lung and spleen of bank voles was extremely low. These findings, together with those of previous studies, suggest that bank voles are an occasional and inefficient host for MuHV-4.
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Affiliation(s)
- David J Hughes
- Department of Infection Biology, University of Liverpool, Liverpool L69 7ZJ, UK
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28
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Stevens HC, Cham KSW, Hughes DJ, Sun R, Sample JT, Bubb VJ, Stewart JP, Quinn JP. CTCF and Sp1 interact with the Murine gammaherpesvirus 68 internal repeat elements. Virus Genes 2012; 45:265-73. [DOI: 10.1007/s11262-012-0769-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Accepted: 05/29/2012] [Indexed: 01/08/2023]
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29
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Tracking murine gammaherpesvirus 68 infection of germinal center B cells in vivo. PLoS One 2012; 7:e33230. [PMID: 22427999 PMCID: PMC3302828 DOI: 10.1371/journal.pone.0033230] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Accepted: 02/13/2012] [Indexed: 11/23/2022] Open
Abstract
Infection of mice with murine gammaherpesvirus 68 (MHV68) provides a tractable small animal model to study various aspects of persistent gammaherpesvirus infection. We have previously utilized a transgenic MHV68 that expresses enhanced yellow fluorescent protein (EYFP) to identify infected cells. While this recombinant MHV68 has been useful for identifying infected cell populations by flow cytometry, it has been suboptimal for identification of infected cells in tissue sections due to the high solubility of EYFP. Efficient detection of EYFP expressed from the MHV68 genome in tissue sections requires fixation of whole organs prior to sectioning, which frequently leads to over-fixation of some cellular antigens precluding their detection. To circumvent this issue, we describe the generation and characterization of a transgenic MHV68 harboring a fusion gene composed of the EYFP coding sequence fused to the histone H2B open reading frame. Because the H2bYFP fusion protein is tightly bound in nucleosomes in the nucleus it does not freely diffuse out of unfixed tissue sections, and thus eliminates the need for tissue fixation. We have used the MHV68-H2bYFP recombinant virus to assess the location and distribution of virus infected B cells in germinal centers during the peak of MHV68 latency in vivo. These analyses show that the physical location of distinct populations of infected germinal center B cells correlates well with their surface phenotype. Furthermore, analysis of the distribution of virus infection within germinal center B cell populations revealed that ca. 70% of MHV68 infected GC B cells are rapidly dividing centroblasts, while ca. 20% have a clear centrocyte phenotype. Finally, we have shown that marking of infected cells with MHV68-H2bYFP is extended long after the onset of latency – which should facilitate studies to track MHV68 latently infected cells at late times post-infection.
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30
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Abstract
Viral infections of laboratory mice have considerable impact on research results, and prevention of such infections is therefore of crucial importance. This chapter covers infections of mice with the following viruses: herpesviruses, mousepox virus, murine adenoviruses, polyomaviruses, parvoviruses, lactate dehydrogenase-elevating virus, lymphocytic choriomeningitis virus, mammalian orthoreovirus serotype 3, murine hepatitis virus, murine norovirus, murine pneumonia virus, murine rotavirus, Sendai virus, and Theiler’s murine encephalomyelitis virus. For each virus, there is a description of the agent, epizootiology, clinical symptoms, pathology, methods of diagnosis and control, and its impact on research.
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31
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Soare T, Leeming G, Morgan R, Papoula-Pereira R, Kipar A, Stewart JP, Hetzel U. Equine multinodular pulmonary fibrosis in horses in the UK. Vet Rec 2011; 169:313. [DOI: 10.1136/vr.d4348] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- T. Soare
- Veterinary Pathology; University of Liverpool; School of Veterinary Science; Crown Street Liverpool L69 7ZJ UK
| | - G. Leeming
- Veterinary Pathology; University of Liverpool; School of Veterinary Science; Crown Street Liverpool L69 7ZJ UK
| | - R. Morgan
- Philip Leverhulme Equine Hospital; University of Liverpool, Leahurst; Chester High Road Neston Cheshire CH64 7TE UK
| | - R. Papoula-Pereira
- Veterinary Pathology; University of Liverpool; School of Veterinary Science; Crown Street Liverpool L69 7ZJ UK
| | - A. Kipar
- Veterinary Pathology; University of Liverpool; School of Veterinary Science; Crown Street Liverpool L69 7ZJ UK
| | - J. P. Stewart
- National Centre for Zoonosis Research; University of Liverpool, Leahurst; Chester High Road Neston Cheshire CH64 7TE UK
| | - U. Hetzel
- Veterinary Pathology; University of Liverpool; School of Veterinary Science; Crown Street Liverpool L69 7ZJ UK
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32
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Hughes DJ, Kipar A, Leeming GH, Bennett E, Howarth D, Cummerson JA, Papoula-Pereira R, Flanagan BF, Sample JT, Stewart JP. Chemokine binding protein M3 of murine gammaherpesvirus 68 modulates the host response to infection in a natural host. PLoS Pathog 2011; 7:e1001321. [PMID: 21445235 PMCID: PMC3060169 DOI: 10.1371/journal.ppat.1001321] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Accepted: 02/16/2011] [Indexed: 12/15/2022] Open
Abstract
Murine γ-herpesvirus 68 (MHV-68) infection of Mus musculus-derived strains of mice is an attractive model of γ-herpesvirus infection. Surprisingly, however, ablation of expression of MHV-68 M3, a secreted protein with broad chemokine-binding properties in vitro, has no discernable effect during experimental infection via the respiratory tract. Here we demonstrate that M3 indeed contributes significantly to MHV-68 infection, but only in the context of a natural host, the wood mouse (Apodemus sylvaticus). Specifically, M3 was essential for two features unique to the wood mouse: virus-dependent inducible bronchus-associated lymphoid tissue (iBALT) in the lung and highly organized secondary follicles in the spleen, both predominant sites of latency in these organs. Consequently, lack of M3 resulted in substantially reduced latency in the spleen and lung. In the absence of M3, splenic germinal centers appeared as previously described for MHV-68-infected laboratory strains of mice, further evidence that M3 is not fully functional in the established model host. Finally, analyses of M3's influence on chemokine and cytokine levels within the lungs of infected wood mice were consistent with the known chemokine-binding profile of M3, and revealed additional influences that provide further insight into its role in MHV-68 biology. Infection of inbred strains of laboratory mice (Mus musculus) with the rodent γ-herpesvirus MHV-68 continues to be developed as an attractive experimental model of γ-herpesvirus infection. In this regard, the MHV-68 protein M3 has been shown to selectively bind and inhibit chemokines involved in the antiviral immune response, a property expected to contribute significantly to virus infection and host colonization. However, inactivation of the M3 gene has no discernable consequence on infection in this animal host. Prompted by recent evidence that natural hosts of MHV-68 are members of the genus Apodemus, and that MHV-68 infection in laboratory-bred wood mice (Apodemus sylvaticus) differs significantly from that which has been described in standard strains of laboratory mice, we addressed whether M3 functions in a host-specific manner. Indeed, we find that M3 is responsible for host-specific differences observed for MHV-68 infection, that its influence on infection within wood mice is consistent with its chemokine-binding properties, and that in its absence, persistent latent infection - a hallmark of herpesvirus infections - is attenuated. This highlights the importance of host selection when investigating specific roles of pathogenesis-related viral genes, and advances our understanding of this model and its potential application to human γ-herpesvirus infections.
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Affiliation(s)
- David J. Hughes
- School of Infection and Host Defence, The University of Liverpool, Liverpool, United Kingdom
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
| | - Anja Kipar
- Veterinary Pathology, School of Veterinary Science, The University of Liverpool, Liverpool, United Kingdom
| | - Gail H. Leeming
- Veterinary Pathology, School of Veterinary Science, The University of Liverpool, Liverpool, United Kingdom
| | - Elaine Bennett
- School of Infection and Host Defence, The University of Liverpool, Liverpool, United Kingdom
| | - Deborah Howarth
- School of Infection and Host Defence, The University of Liverpool, Liverpool, United Kingdom
| | - Joanne A. Cummerson
- School of Infection and Host Defence, The University of Liverpool, Liverpool, United Kingdom
| | - Rita Papoula-Pereira
- Veterinary Pathology, School of Veterinary Science, The University of Liverpool, Liverpool, United Kingdom
| | - Brian F. Flanagan
- School of Infection and Host Defence, The University of Liverpool, Liverpool, United Kingdom
| | - Jeffery T. Sample
- Department of Microbiology and Immunology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
| | - James P. Stewart
- School of Infection and Host Defence, The University of Liverpool, Liverpool, United Kingdom
- * E-mail:
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Mononucleosis and antigen-driven T cell responses have different requirements for interleukin-2 signaling in murine gammaherpesvirus infection. J Virol 2010; 84:10923-7. [PMID: 20686022 DOI: 10.1128/jvi.00856-10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Interleukin-2 (IL-2) has been implicated as being necessary for the optimal formation of primary CD8(+) T cell responses against various pathogens. Here we have examined the role that IL-2 signaling plays in several aspects of a CD8(+) T cell response against murine gammaherpesvirus 68 (MHV-68). Exposure to MHV-68 causes a persistent infection, along with infectious mononucleosis, providing a model for studying these processes in mice. Our study indicates that CD25 is necessary for optimal expansion of the antigen-specific CD8(+) T cell response but not for the long-term memory response. Contrastingly, IL-2 signaling through CD25 is absolutely required for CD8(+) T cell mononucleosis.
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34
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François S, Vidick S, Sarlet M, Michaux J, Koteja P, Desmecht D, Stevenson PG, Vanderplasschen A, Gillet L. Comparative study of murid gammaherpesvirus 4 infection in mice and in a natural host, bank voles. J Gen Virol 2010; 91:2553-63. [PMID: 20538905 DOI: 10.1099/vir.0.023481-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Gammaherpesviruses are archetypal pathogenic persistent viruses. The known human gammaherpesviruses (Epstein-Barr virus and Kaposi's sarcoma-associated herpesvirus) are host-specific and therefore lack a convenient in vivo infection model. This makes related animal gammaherpesviruses an important source of information. Infection by murid herpesvirus 4 (MuHV-4), a virus originally isolated from bank voles (Myodes glareolus), was studied here. MuHV-4 infection of inbred laboratory mouse strains (Mus musculus) is commonly used as a general model of gammaherpesvirus pathogenesis. However, MuHV-4 has not been isolated from house mice, and no systematic comparison has been made between experimental MuHV-4 infections of mice and bank voles. This study therefore characterized MuHV-4 (strain MHV-68) infection of bank voles through global luciferase imaging and classical virological methods. As in mice, intranasal virus inoculation led to productive replication in bank vole lungs, accompanied by massive cellular infiltrates. However, the extent of lytic virus replication was approximately 1000-fold lower in bank voles than in mice. Peak latency titres in lymphoid tissue were also lower, although latency was still established. Finally, virus transmission was tested between animals maintained in captivity. However, as observed in mice, MuHV-4 was not transmitted between voles under these conditions. In conclusion, this study revealed that, despite quantitative differences, replication and the latency sites of MuHV-4 are comparable in bank voles and mice. Therefore, it appears that, so far, Mus musculus represents a suitable host for studying gammaherpesvirus pathogenesis with MuHV-4. Establishing transmission conditions in captivity will be a vital step for further research in this field.
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Affiliation(s)
- Sylvie François
- Immunology-Vaccinology, Department of Infectious and Parasitic Diseases (B43b), Faculty of Veterinary Medicine, University of Liège, Belgium
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35
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Hughes DJ, Kipar A, Milligan SG, Cunningham C, Sanders M, Quail MA, Rajandream MA, Efstathiou S, Bowden RJ, Chastel C, Bennett M, Sample JT, Barrell B, Davison AJ, Stewart JP. Characterization of a novel wood mouse virus related to murid herpesvirus 4. J Gen Virol 2010; 91:867-79. [PMID: 19940063 PMCID: PMC2888160 DOI: 10.1099/vir.0.017327-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Accepted: 11/19/2009] [Indexed: 11/18/2022] Open
Abstract
Two novel gammaherpesviruses were isolated, one from a field vole (Microtus agrestis) and the other from wood mice (Apodemus sylvaticus). The genome of the latter, designated wood mouse herpesvirus (WMHV), was completely sequenced. WMHV had the same genome structure and predicted gene content as murid herpesvirus 4 (MuHV4; murine gammaherpesvirus 68). Overall nucleotide sequence identity between WMHV and MuHV4 was 85 % and most of the 10 kb region at the left end of the unique region was particularly highly conserved, especially the viral tRNA-like sequences and the coding regions of genes M1 and M4. The partial sequence (71 913 bp) of another gammaherpesvirus, Brest herpesvirus (BRHV), which was isolated ostensibly from a white-toothed shrew (Crocidura russula), was also determined. The BRHV sequence was 99.2 % identical to the corresponding portion of the WMHV genome. Thus, WMHV and BRHV appeared to be strains of a new virus species. Biological characterization of WMHV indicated that it grew with similar kinetics to MuHV4 in cell culture. The pathogenesis of WMHV in wood mice was also extremely similar to that of MuHV4, except for the absence of inducible bronchus-associated lymphoid tissue at day 14 post-infection and a higher load of latently infected cells at 21 days post-infection.
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Affiliation(s)
- David J. Hughes
- School of Infection and Host Defence, University of Liverpool, Liverpool L69 3GA, UK
| | - Anja Kipar
- Department of Veterinary Pathology, University of Liverpool, Liverpool, L69 7ZJ, UK
| | - Steven G. Milligan
- MRC Virology Unit, Institute of Virology, University of Glasgow, Church Street, Glasgow G11 5JR, UK
| | - Charles Cunningham
- MRC Virology Unit, Institute of Virology, University of Glasgow, Church Street, Glasgow G11 5JR, UK
| | - Mandy Sanders
- The Wellcome Trust Sanger Institute, The Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Michael A. Quail
- The Wellcome Trust Sanger Institute, The Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Marie-Adele Rajandream
- The Wellcome Trust Sanger Institute, The Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Stacey Efstathiou
- Division of Virology, Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, UK
| | - Rory J. Bowden
- MRC Virology Unit, Institute of Virology, University of Glasgow, Church Street, Glasgow G11 5JR, UK
| | - Claude Chastel
- Laboratoire de Virologie, Faculté de Médecine, 29285 Brest, France
| | - Malcolm Bennett
- Department of Veterinary Pathology, University of Liverpool, Liverpool, L69 7ZJ, UK
| | - Jeffery T. Sample
- Department of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Bart Barrell
- The Wellcome Trust Sanger Institute, The Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Andrew J. Davison
- MRC Virology Unit, Institute of Virology, University of Glasgow, Church Street, Glasgow G11 5JR, UK
| | - James P. Stewart
- School of Infection and Host Defence, University of Liverpool, Liverpool L69 3GA, UK
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