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Aouadi W, Najburg V, Legendre R, Varet H, Kergoat L, Tangy F, Larrous F, Komarova AV, Bourhy H. Comparative analysis of rabies pathogenic and vaccine strains detection by RIG-I-like receptors. Microbes Infect 2024; 26:105321. [PMID: 38461968 DOI: 10.1016/j.micinf.2024.105321] [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: 11/21/2023] [Revised: 02/25/2024] [Accepted: 03/06/2024] [Indexed: 03/12/2024]
Abstract
Rabies virus (RABV) is a lethal neurotropic virus that causes 60,000 human deaths every year globally. RABV infection is characterized by the suppression of the interferon (IFN)-mediated antiviral response. However, molecular mechanisms leading to RABV sensing by RIG-I-like receptors (RLR) that initiates IFN signaling currently remain elusive. Here, we showed that RABV RNAs are primarily recognized by the RIG-I RLR, resulting in an IFN response in the infected cells, but this response varied according to the type of RABV used. Pathogenic RABV strain RNAs, Tha, were poorly detected in the cytosol by RIG-I and therefore caused a weak antiviral response. However, we revealed a strong IFN activity triggered by the attenuated RABV vaccine strain RNAs, SAD, mediated by RIG-I. We characterized two major 5' copy-back defective interfering (5'cb DI) genomes generated during SAD replication. Furthermore, we identified an interaction between 5'cb DI genomes, and RIG-I correlated with a high stimulation of the type I IFN signaling. This study indicates that wild-type RABV RNAs poorly activate the RIG-I pathway, while the presence of 5'cb DIs in the live-attenuated vaccine strain serves as an intrinsic adjuvant that strengthens its efficiency by enhancing RIG-I detection thus strongly stimulates the IFN response.
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Affiliation(s)
- Wahiba Aouadi
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, 75015 Paris, France
| | - Valérie Najburg
- Institut Pasteur, Université Paris Cité, Vaccines-innovation Laboratory, 75015 Paris, France
| | - Rachel Legendre
- Institut Pasteur, Université Paris Cité, Hub Bioinformatics, and Biostatistics, 75015 Paris, France
| | - Hugo Varet
- Institut Pasteur, Université Paris Cité, Hub Bioinformatics, and Biostatistics, 75015 Paris, France
| | - Lauriane Kergoat
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, 75015 Paris, France
| | - Frédéric Tangy
- Institut Pasteur, Université Paris Cité, Vaccines-innovation Laboratory, 75015 Paris, France
| | - Florence Larrous
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, 75015 Paris, France
| | - Anastassia V Komarova
- Institut Pasteur, Université Paris Cité, Interactomics, RNA and Immunity Laboratory, 75015 Paris, France.
| | - Hervé Bourhy
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, 75015 Paris, France.
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2
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Watters CR, Barro O, Elliott NM, Zhou Y, Gabere M, Raupach E, Baker AT, Barrett MT, Buetow KH, Jacobs B, Seetharam M, Borad MJ, Nagalo BM. Multi-modal efficacy of a chimeric vesiculovirus expressing the Morreton glycoprotein in sarcoma. Mol Ther Oncolytics 2023; 29:4-14. [PMID: 36969560 PMCID: PMC10033453 DOI: 10.1016/j.omto.2023.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 02/24/2023] [Indexed: 03/06/2023] Open
Abstract
Vesiculoviruses are attractive oncolytic virus platforms due to their rapid replication, appreciable transgene capacity, broad tropism, limited preexisting immunity, and tumor selectivity through type I interferon response defects in malignant cells. We developed a synthetic chimeric virus (VMG) expressing the glycoprotein (G) from Morreton virus (MorV) and utilizing the remaining structural genes from vesicular stomatitis virus (VSV). VMG exhibited in vitro efficacy by inducing oncolysis in a broad range of sarcoma subtypes across multiple species. Notably, all cell lines tested showed the ability of VMG to yield productive infection with rapid replication kinetics and induction of apoptosis. Furthermore, pilot safety evaluations of VMG in immunocompetent, non-tumor-bearing mice showed an absence of toxicity with intranasal doses as high as 1e10 50% tissue culture infectious dose (TCID50)/kg. Locoregional administration of VMG in vivo resulted in tumor reduction in an immunodeficient Ewing sarcoma xenograft at doses as low as 2e5 TCID50. In a murine syngeneic fibrosarcoma model, while no tumor inhibition was achieved with VMG, there was a robust induction of CD8+ T cells within the tumor. The studies described herein establish the promising potential for VMG to be used as a novel oncolytic virotherapy platform with anticancer effects in sarcoma.
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Affiliation(s)
- Chelsae R. Watters
- Division of Hematology/Oncology, Department of Internal Medicine, Mayo Clinic, Scottsdale, AZ 85259, USA
| | - Oumar Barro
- Division of Hematology/Oncology, Department of Internal Medicine, Mayo Clinic, Scottsdale, AZ 85259, USA
| | - Natalie M. Elliott
- Division of Hematology/Oncology, Department of Internal Medicine, Mayo Clinic, Scottsdale, AZ 85259, USA
| | - Yumei Zhou
- Division of Hematology/Oncology, Department of Internal Medicine, Mayo Clinic, Scottsdale, AZ 85259, USA
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Musa Gabere
- Division of Hematology/Oncology, Department of Internal Medicine, Mayo Clinic, Scottsdale, AZ 85259, USA
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Elizabeth Raupach
- Division of Hematology/Oncology, Department of Internal Medicine, Mayo Clinic, Scottsdale, AZ 85259, USA
| | | | - Michael T. Barrett
- Division of Hematology/Oncology, Department of Internal Medicine, Mayo Clinic, Scottsdale, AZ 85259, USA
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
- Mayo Clinic Cancer Center, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Kenneth H. Buetow
- Computational Sciences and Informatics Program for Complex Adaptive System Arizona State University, Tempe, AZ 85281, USA
| | - Bertram Jacobs
- Center for Infectious Diseases and Vaccinology, the Biodesign Institute, Arizona State University, Tempe, AZ 85281, USA
| | - Mahesh Seetharam
- Division of Hematology/Oncology, Department of Internal Medicine, Mayo Clinic, Scottsdale, AZ 85259, USA
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
- Mayo Clinic Cancer Center, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Mitesh J. Borad
- Division of Hematology/Oncology, Department of Internal Medicine, Mayo Clinic, Scottsdale, AZ 85259, USA
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
- Mayo Clinic Cancer Center, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Bolni Marius Nagalo
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- The Winthrop P. Rockefeller Cancer Institute, UAMS, Little Rock, AR 72205, USA
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3
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Nagalo BM, Zhou Y, Loeuillard EJ, Dumbauld C, Barro O, Elliott NM, Baker AT, Arora M, Bogenberger JM, Meurice N, Petit J, Uson PLS, Aslam F, Raupach E, Gabere M, Basnakian A, Simoes CC, Cannon MJ, Post SR, Buetow K, Chamcheu JC, Barrett MT, Duda DG, Jacobs B, Vile R, Barry MA, Roberts LR, Ilyas S, Borad MJ. Characterization of Morreton virus as an oncolytic virotherapy platform for liver cancers. Hepatology 2023; 77:1943-1957. [PMID: 36052732 DOI: 10.1002/hep.32769] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 08/04/2022] [Accepted: 08/10/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Morreton virus (MORV) is an oncolytic Vesiculovirus , genetically distinct from vesicular stomatitis virus (VSV). AIM To report that MORV induced potent cytopathic effects (CPEs) in cholangiocarcinoma (CCA) and hepatocellular carcinoma (HCC) in vitro models. APPROACH AND RESULTS In preliminary safety analyses, high intranasal doses (up to 10 10 50% tissue culture infectious dose [TCID 50 ]) of MORV were not associated with significant adverse effects in immune competent, non-tumor-bearing mice. MORV was shown to be efficacious in a Hep3B hepatocellular cancer xenograft model but not in a CCA xenograft HuCCT1 model. In an immune competent, syngeneic murine CCA model, single intratumoral treatments with MORV (1 × 10 7 TCID 50 ) triggered a robust antitumor immune response leading to substantial tumor regression and disease control at a dose 10-fold lower than VSV (1 × 10 8 TCID 50 ). MORV led to increased CD8 + cytotoxic T cells without compensatory increases in tumor-associated macrophages and granulocytic or monocytic myeloid-derived suppressor cells. CONCLUSIONS Our findings indicate that wild-type MORV is safe and can induce potent tumor regression via immune-mediated and immune-independent mechanisms in HCC and CCA animal models without dose limiting adverse events. These data warrant further development and clinical translation of MORV as an oncolytic virotherapy platform.
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Affiliation(s)
- Bolni Marius Nagalo
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Department of Pathology , University of Arkansas for Medical Sciences , Little Rock , Arkansas , USA
- The Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences , Little Rock , Arkansas , USA
| | - Yumei Zhou
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
| | - Emilien J Loeuillard
- Division of Gastroenterology and Hepatology , Mayo Clinic , Rochester , Minnesota , USA
| | - Chelsae Dumbauld
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
| | - Oumar Barro
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
| | - Natalie M Elliott
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
| | - Alexander T Baker
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
| | - Mansi Arora
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
| | - James M Bogenberger
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
| | - Nathalie Meurice
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
| | - Joachim Petit
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
| | - Pedro Luiz Serrano Uson
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
- Center for Personalized Medicine , Hospital Israelita Albert Einstein , São Paulo , Brazil
| | - Faaiq Aslam
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
| | - Elizabeth Raupach
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
| | - Musa Gabere
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
| | - Alexei Basnakian
- Department of Pathology , University of Arkansas for Medical Sciences , Little Rock , Arkansas , USA
- Department of Pharmacology and Toxicology , University of Arkansas for Medical Sciences , Little Rock , Arkansas , USA
| | - Camila C Simoes
- Department of Pathology , University of Arkansas for Medical Sciences , Little Rock , Arkansas , USA
- The Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences , Little Rock , Arkansas , USA
| | - Martin J Cannon
- The Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences , Little Rock , Arkansas , USA
- Department of Microbiology and Immunology , University of Arkansas for Medical Sciences , Little Rock , Arkansas , USA
| | - Steven R Post
- Department of Pathology , University of Arkansas for Medical Sciences , Little Rock , Arkansas , USA
- The Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences , Little Rock , Arkansas , USA
| | - Kenneth Buetow
- Computational Sciences and Informatics Program for Complex Adaptive System Arizona State University , Tempe , Arizona , USA
| | - Jean Christopher Chamcheu
- School of Basic Pharmaceutical and Toxicological Sciences , College of Pharmacy, University of Louisiana , Monroe , Louisiana , USA
| | - Michael T Barrett
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
| | - Dan G Duda
- Steele Laboratories for Tumor Biology, Department of Radiation Oncology , Massachusetts General Hospital and Harvard Medical School , Boston , Massachusetts , USA
| | - Bertram Jacobs
- Center for Infectious Diseases and Vaccinology , the Biodesign Institute, Arizona State University , Tempe , Arizona , USA
| | - Richard Vile
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Mayo Clinic Comprehensive Cancer Center , Phoenix , Minnesota , USA
| | - Michael A Barry
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Mayo Clinic Comprehensive Cancer Center , Phoenix , Minnesota , USA
- Division of Infectious Diseases, Department of Internal Medicine , Mayo Clinic Rochester , Rochester , Minnesota , USA
| | - Lewis R Roberts
- Division of Gastroenterology and Hepatology , Mayo Clinic , Rochester , Minnesota , USA
| | - Sumera Ilyas
- Division of Gastroenterology and Hepatology , Mayo Clinic , Rochester , Minnesota , USA
| | - Mitesh J Borad
- Department of Molecular Medicine , Mayo Clinic , Rochester , Minnesota , USA
- Division of Hematology and Medical Oncology , Mayo Clinic , Phoenix , Arizona , USA
- Mayo Clinic Comprehensive Cancer Center , Phoenix , Minnesota , USA
- Mayo Clinic Center for Individualized Medicine , Rochester , Minnesota , USA
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Metwally NH, Abd-Elmoety AS. Novel fluorinated pyrazolo[1,5-a]pyrimidines: In a way from synthesis and docking studies to biological evaluation. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Abstract
Cortical circuit tracing using modified rabies virus can identify input neurons making direct monosynaptic connections onto neurons of interest. However, challenges remain in our ability to establish the cell type identity of rabies-labeled input neurons. While transcriptomics may offer an avenue to characterize inputs, the extent of rabies-induced transcriptional changes in distinct neuronal cell types remains unclear, and whether these changes preclude characterization of rabies-infected neurons according to established transcriptomic cell types is unknown. We used single-nucleus RNA sequencing to survey the gene expression profiles of rabies-infected neurons and assessed their correspondence with established transcriptomic cell types. We demonstrated that when using transcriptome-wide RNA profiles, rabies-infected cortical neurons can be transcriptomically characterized despite global and cell-type-specific rabies-induced transcriptional changes. Notably, we found differential modulation of neuronal marker gene expression, suggesting that caution should be taken when attempting to characterize rabies-infected cells with single genes or small gene sets.
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6
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Farache D, Liu L, Lee ASY. Eukaryotic Initiation Factor 5A2 Regulates Expression of Antiviral Genes. J Mol Biol 2022; 434:167564. [PMID: 35358571 DOI: 10.1016/j.jmb.2022.167564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 03/22/2022] [Accepted: 03/22/2022] [Indexed: 12/14/2022]
Abstract
Translation factors are essential for regulation of protein synthesis. The eukaryotic translation initiation factor 5A (eIF5A) family is made up of two paralogues - eIF5A1 and eIF5A2 - which display high sequence homology but distinct tissue tropism. While eIF5A1 directly binds to the ribosome and regulates translation initiation, elongation, and termination, the molecular function of eIF5A2 remains poorly understood. Here, we engineer an eIF5A2 knockout allele in the SW480 colon cancer cell line. Using ribosome profiling and RNA-Sequencing, we reveal that eIF5A2 is functionally distinct from eIF5A1 and does not regulate transcript-specific or global protein synthesis. Instead, eIF5A2 knockout leads to decreased intrinsic antiviral gene expression, including members of the IFITM and APOBEC3 family. Furthermore, cells lacking eIF5A2 display increased permissiveness to virus infection. Our results uncover eIF5A2 as a factor involved regulating the antiviral transcriptome, and reveal an example of how gene duplications of translation factors can result in proteins with distinct functions.
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Affiliation(s)
- Dorian Farache
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Luochen Liu
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Amy S Y Lee
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.
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7
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Piontkivska H, Wales-McGrath B, Miyamoto M, Wayne ML. ADAR Editing in Viruses: An Evolutionary Force to Reckon with. Genome Biol Evol 2021; 13:evab240. [PMID: 34694399 PMCID: PMC8586724 DOI: 10.1093/gbe/evab240] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/21/2021] [Indexed: 02/06/2023] Open
Abstract
Adenosine Deaminases that Act on RNA (ADARs) are RNA editing enzymes that play a dynamic and nuanced role in regulating transcriptome and proteome diversity. This editing can be highly selective, affecting a specific site within a transcript, or nonselective, resulting in hyperediting. ADAR editing is important for regulating neural functions and autoimmunity, and has a key role in the innate immune response to viral infections, where editing can have a range of pro- or antiviral effects and can contribute to viral evolution. Here we examine the role of ADAR editing across a broad range of viral groups. We propose that the effect of ADAR editing on viral replication, whether pro- or antiviral, is better viewed as an axis rather than a binary, and that the specific position of a given virus on this axis is highly dependent on virus- and host-specific factors, and can change over the course of infection. However, more research needs to be devoted to understanding these dynamic factors and how they affect virus-ADAR interactions and viral evolution. Another area that warrants significant attention is the effect of virus-ADAR interactions on host-ADAR interactions, particularly in light of the crucial role of ADAR in regulating neural functions. Answering these questions will be essential to developing our understanding of the relationship between ADAR editing and viral infection. In turn, this will further our understanding of the effects of viruses such as SARS-CoV-2, as well as many others, and thereby influence our approach to treating these deadly diseases.
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Affiliation(s)
- Helen Piontkivska
- Department of Biological Sciences, Kent State University, Ohio, USA
- School of Biomedical Sciences, Kent State University, Ohio, USA
- Brain Health Research Institute, Kent State University, Ohio, USA
| | | | - Michael Miyamoto
- Department of Biology, University of Florida, Gainesville, Florida, USA
| | - Marta L Wayne
- Department of Biology, University of Florida, Gainesville, Florida, USA
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Molecular Pathogenesis and Immune Evasion of Vesicular Stomatitis New Jersey Virus Inferred from Genes Expression Changes in Infected Porcine Macrophages. Pathogens 2021; 10:pathogens10091134. [PMID: 34578166 PMCID: PMC8469936 DOI: 10.3390/pathogens10091134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/27/2021] [Accepted: 08/31/2021] [Indexed: 11/17/2022] Open
Abstract
The molecular mechanisms associated with the pathogenesis of vesicular stomatitis virus (VSV) in livestock remain poorly understood. Several studies have highlighted the relevant role of macrophages in controlling the systemic dissemination of VSV during infection in different animal models, including mice, cattle, and pigs. To gain more insight into the molecular mechanisms used by VSV to impair the immune response in macrophages, we used microarrays to determine the transcriptomic changes produced by VSV infection in primary cultures of porcine macrophages. The results indicated that VSV infection induced the massive expression of multiple anorexic, pyrogenic, proinflammatory, and immunosuppressive genes. Overall, the interferon (IFN) response appeared to be suppressed, leading to the absence of stimulation of interferon-stimulated genes (ISG). Interestingly, VSV infection promoted the expression of several genes known to downregulate the expression of IFNβ. This represents an alternate mechanism for VSV control of the IFN response, beyond the recognized mechanisms mediated by the matrix protein. Although there was no significant differential gene expression in macrophages infected with a highly virulent epidemic strain compared to a less virulent endemic strain, the endemic strain consistently induced higher expression of all upregulated cytokines and chemokines. Collectively, this study provides novel insights into VSV molecular pathogenesis and immune evasion that warrant further investigation.
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9
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Cano I, Santos EM, Moore K, Farbos A, van Aerle R. Evidence of Transcriptional Shutoff by Pathogenic Viral Haemorrhagic Septicaemia Virus in Rainbow Trout. Viruses 2021; 13:v13061129. [PMID: 34208332 PMCID: PMC8231187 DOI: 10.3390/v13061129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/03/2021] [Accepted: 06/07/2021] [Indexed: 12/13/2022] Open
Abstract
The basis of pathogenicity of viral haemorrhagic septicaemia virus (VHSV) was analysed in the transcriptome of a rainbow trout cell line inoculated with pathogenic and non-pathogenic VHSV isolates. Although both VHSV isolates showed similar viral replication patterns, the number of differentially expressed genes was 42-fold higher in cells inoculated with the non-pathogenic VHSV at 3 h post inoculation (hpi). Infection with the non-pathogenic isolate resulted in Gene Ontologies (GO) enrichment of terms such as immune response, cytokine-mediated signalling pathway, regulation of translational initiation, unfolded protein binding, and protein folding, and induced an over-representation of the p53, PPAR, and TGF-β signalling pathways. Inoculation with the pathogenic isolate resulted in the GO enrichment of terms related to lipid metabolism and the salmonella infection KEGG pathway involved in the rearrangement of the cytoskeleton. Antiviral response was evident at 12hpi in cells infected with the pathogenic isolate. Overall, the data showed a delay in the response of genes involved in immune responses and viral sensing in cells inoculated with the pathogenic isolate and suggest transcriptional shutoff and immune avoidance as a critical mechanism of pathogenicity in VHSV. These pathways offer opportunities to further understand and manage VHSV pathogenicity in rainbow trout.
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Affiliation(s)
- Irene Cano
- International Centre of Excellence for Aquatic Animal Health, Cefas Weymouth Laboratory, Barrack Road, The Nothe, Weymouth DT4 8UB, Dorset, UK;
- Correspondence:
| | - Eduarda M. Santos
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Stocker Road, Exeter EX4 4QD, Devon, UK;
- Sustainable Aquaculture Futures, Biosciences, College of Life and Environmental Sciences, University of Exeter, Stocker Road, Exeter EX4 4QD, Devon, UK
| | - Karen Moore
- Exeter Sequencing Service, Geoffrey Pope Building, University of Exeter, Exeter EX4 4QD, Devon, UK; (K.M.); (A.F.)
| | - Audrey Farbos
- Exeter Sequencing Service, Geoffrey Pope Building, University of Exeter, Exeter EX4 4QD, Devon, UK; (K.M.); (A.F.)
| | - Ronny van Aerle
- International Centre of Excellence for Aquatic Animal Health, Cefas Weymouth Laboratory, Barrack Road, The Nothe, Weymouth DT4 8UB, Dorset, UK;
- Sustainable Aquaculture Futures, Biosciences, College of Life and Environmental Sciences, University of Exeter, Stocker Road, Exeter EX4 4QD, Devon, UK
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10
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Al-Zaher A, Domingo-Calap P, Sanjuán R. Experimental virus evolution in cancer cell monolayers, spheroids, and tissue explants. Virus Evol 2021; 7:veab045. [PMID: 34040797 PMCID: PMC8134955 DOI: 10.1093/ve/veab045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Viral laboratory evolution has been used for different applications, such as modeling viral emergence, drug-resistance prediction, and therapeutic virus optimization. However, these studies have been mainly performed in cell monolayers, a highly simplified environment, raising concerns about their applicability and relevance. To address this, we compared the evolution of a model virus in monolayers, spheroids, and tissue explants. We performed this analysis in the context of cancer virotherapy by performing serial transfers of an oncolytic vesicular stomatitis virus (VSV-Δ51) in 4T1 mouse mammary tumor cells. We found that VSV-Δ51 gained fitness in each of these three culture systems, and that adaptation to the more complex environments (spheroids or explants) correlated with increased fitness in monolayers. Most evolved lines improved their ability to suppress β-interferon secretion compared to the VSV-Δ51 founder, suggesting that the selective pressure exerted by antiviral innate immunity was important in the three systems. However, system-specific patterns were also found. First, viruses evolved in monolayers remained more oncoselective that those evolved in spheroids, since the latter showed concomitant adaptation to non-tumoral mouse cells. Second, deep sequencing indicated that viral populations evolved in monolayers or explants tended to be more genetically diverse than those evolved in spheroids. Finally, we found highly variable outcomes among independent evolutionary lines propagated in explants. We conclude that experimental evolution in monolayers tends to be more reproducible than in spheroids or explants, and better preserves oncoselectivity. Our results also suggest that monolayers capture at least some relevant selective pressures present in more complex systems.
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Affiliation(s)
- Ahmed Al-Zaher
- Institute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, C/ Catedrático Agustín Escardino 9, València 46980, Spain
| | - Pilar Domingo-Calap
- Institute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, C/ Catedrático Agustín Escardino 9, València 46980, Spain
| | - Rafael Sanjuán
- Institute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, C/ Catedrático Agustín Escardino 9, València 46980, Spain
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11
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Interferon-Independent Restriction of RNA Virus Entry and Replication by a Class of Damage-Associated Molecular Patterns. mBio 2021; 12:mBio.00584-21. [PMID: 33849978 PMCID: PMC8092255 DOI: 10.1128/mbio.00584-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
In this work, we explored how a class of oxidized lipids, spontaneously created during tissue damage and unprogrammed cell lysis, block the earliest events in RNA virus infection in the human epithelium. This gives us novel insight into the ways that we view infection models, unveiling a built-in mechanism to slow viral growth that neither engages the interferon response nor is subject to known viral antagonism. Mammalian cells detect microbial molecules known as pathogen-associated molecular patterns (PAMPs) as indicators of potential infection. Upon PAMP detection, diverse defensive responses are induced by the host, including those that promote inflammation and cell-intrinsic antimicrobial activities. Host-encoded molecules released from dying or damaged cells, known as damage-associated molecular patterns (DAMPs), also induce defensive responses. Both DAMPs and PAMPs are recognized for their inflammatory potential, but only the latter are well established to stimulate cell-intrinsic host defense. Here, we report a class of DAMPs that engender an antiviral state in human epithelial cells. These DAMPs include oxPAPC (oxidized 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine), PGPC (1-palmitoyl-2-glutaryl phosphatidylcholine), and POVPC [1-palmitoyl-2-(5-oxovaleroyl)-sn-glycero-3-phosphatidylcholine], oxidized lipids that are naturally released from dead or dying cells. Exposing cells to these DAMPs prior to vesicular stomatitis virus (VSV) infection limits viral replication. Mechanistically, these DAMPs prevent viral entry, thereby limiting the percentage of cells that are productively infected and consequently restricting viral load. We found that the antiviral actions of oxidized lipids are distinct from those mediated by the PAMP Poly I:C, in that the former induces a more rapid antiviral response without the induction of the interferon response. These data support a model whereby interferon-independent defensive activities can be induced by DAMPs, which may limit viral replication before PAMP-mediated interferon responses are induced. This antiviral activity may impact viruses that disrupt interferon responses in the oxygenated environment of the lung, such as influenza virus and SARS-CoV-2.
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Choi JH, Burke JM, Szymanik KH, Nepal U, Battenhouse A, Lau JT, Stark A, Lam V, Sullivan CS. DUSP11-mediated control of 5'-triphosphate RNA regulates RIG-I sensitivity. Genes Dev 2020; 34:1697-1712. [PMID: 33184222 PMCID: PMC7706711 DOI: 10.1101/gad.340604.120] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 09/28/2020] [Indexed: 12/11/2022]
Abstract
In this study, Choi et al. set out to elucidate the physiological role of RNA triphosphatase dual-specificity phosphatase 11 (DUSP11) in the innate immune response. Using in vivo and in vitro experiments, the authors describe the importance of controlling 5′-triphosphate RNA levels to prevent aberrant RIG-I signaling and demonstrate DUSP11 as a key effector of this mechanism. Deciphering the mechanisms that regulate the sensitivity of pathogen recognition receptors is imperative to understanding infection and inflammation. Here we demonstrate that the RNA triphosphatase dual-specificity phosphatase 11 (DUSP11) acts on both host and virus-derived 5′-triphosphate RNAs rendering them less active in inducing a RIG-I-mediated immune response. Reducing DUSP11 levels alters host triphosphate RNA packaged in extracellular vesicles and induces enhanced RIG-I activation in cells exposed to extracellular vesicles. Virus infection of cells lacking DUSP11 results in a higher proportion of triphosphorylated viral transcripts and attenuated virus replication, which is rescued by reducing RIG-I expression. Consistent with the activity of DUSP11 in the cellular RIG-I response, mice lacking DUSP11 display lower viral loads, greater sensitivity to triphosphorylated RNA, and a signature of enhanced interferon activity in select tissues. Our results reveal the importance of controlling 5′-triphosphate RNA levels to prevent aberrant RIG-I signaling and demonstrate DUSP11 as a key effector of this mechanism.
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Affiliation(s)
- Joon H Choi
- Department of Molecular Biosciences, LaMontagne Center for Infectious Disease, The University of Texas at Austin, Austin Texas 78712, USA
| | - James M Burke
- Department of Molecular Biosciences, LaMontagne Center for Infectious Disease, The University of Texas at Austin, Austin Texas 78712, USA
| | - Kayla H Szymanik
- Department of Molecular Biosciences, LaMontagne Center for Infectious Disease, The University of Texas at Austin, Austin Texas 78712, USA
| | - Upasana Nepal
- Department of Molecular Biosciences, LaMontagne Center for Infectious Disease, The University of Texas at Austin, Austin Texas 78712, USA
| | - Anna Battenhouse
- Department of Molecular Biosciences, LaMontagne Center for Infectious Disease, The University of Texas at Austin, Austin Texas 78712, USA
| | - Justin T Lau
- Department of Molecular Biosciences, LaMontagne Center for Infectious Disease, The University of Texas at Austin, Austin Texas 78712, USA
| | - Aaron Stark
- Department of Molecular Biosciences, LaMontagne Center for Infectious Disease, The University of Texas at Austin, Austin Texas 78712, USA
| | - Victor Lam
- Department of Molecular Biosciences, LaMontagne Center for Infectious Disease, The University of Texas at Austin, Austin Texas 78712, USA
| | - Christopher S Sullivan
- Department of Molecular Biosciences, LaMontagne Center for Infectious Disease, The University of Texas at Austin, Austin Texas 78712, USA
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13
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Viruses in connectomics: Viral transneuronal tracers and genetically modified recombinants as neuroscience research tools. J Neurosci Methods 2020; 346:108917. [PMID: 32835704 DOI: 10.1016/j.jneumeth.2020.108917] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 08/12/2020] [Accepted: 08/14/2020] [Indexed: 12/25/2022]
Abstract
Connectomic studies have become 'viral', as viral pathogens have been turned into irreplaceable neuroscience research tools. Highly sensitive viral transneuronal tracing technologies are available, based on the use of alpha-herpesviruses and a rhabdovirus (rabies virus), which function as self-amplifying markers by replicating in recipient neurons. These viruses highly differ with regard to host range, cellular receptors, peripheral uptake, replication, transport direction and specificity. Their characteristics, that make them useful for different purposes, will be highlighted and contrasted. Only transneuronal tracing with rabies virus is entirely specific. The neuroscientist toolbox currently include wild-type alpha-herpesviruses and rabies virus strains enabling polysynaptic tracing of neuronal networks across multiple synapses, as well as genetically modified viral tracers for dual transneuronal tracing, and complementary viral tools including defective and chimeric recombinants that function as single step or monosynaptically restricted tracers, or serve for monitoring and manipulating neuronal activity and gene expression. Methodological issues that are crucial for appropriate use of these technologies will be summarized. Among wild-type and genetically engineered viral tools, rabies virus and chimeric recombinants based on rabies virus as virus backbone are the most powerful, because of the ability of rabies virus to propagate exclusively among connected neurons unidirectionally (retrogradely), without affecting neuronal function. Understanding in depth viral properties is essential for neuroscientists who intend to exploit alpha-herpesviruses, rhabdoviruses or derived recombinants as research tools. Key knowledge will be summarized regarding their cellular receptors, intracellular trafficking and strategies to contrast host defense that explain their different pathophysiology and properties as research tools.
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Huang KW, Sabatini BL. Single-Cell Analysis of Neuroinflammatory Responses Following Intracranial Injection of G-Deleted Rabies Viruses. Front Cell Neurosci 2020; 14:65. [PMID: 32265666 PMCID: PMC7098990 DOI: 10.3389/fncel.2020.00065] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 03/04/2020] [Indexed: 11/13/2022] Open
Abstract
Viral vectors are essential tools for the study of neural circuits, with glycoprotein-deleted rabies viruses being widely used for monosynaptic retrograde tracing to map connectivity between specific cell types in the nervous system. However, the use of rabies virus is limited by the cytotoxicity and the inflammatory responses these viruses trigger. While components of the rabies virus genome contribute to its cytotoxic effects, the function of other neuronal and non-neuronal cells within the vicinity of the infected host neurons in either effecting or mitigating virally-induced tissue damage are still being elucidated. Here, we analyzed 60,212 single-cell RNA profiles to assess both global and cell-type-specific transcriptional responses in the mouse dorsal raphe nucleus (DRN) following intracranial injection of glycoprotein-deleted rabies viruses and axonal infection of dorsal raphe serotonergic neurons. Gene pathway analyses revealed a down-regulation of genes involved in metabolic processes and neurotransmission following infection. We also identified several transcriptionally diverse leukocyte populations that infiltrate the brain and are distinct from resident immune cells. Cell type-specific patterns of cytokine expression showed that antiviral responses were likely orchestrated by Type I and Type II interferon signaling from microglia and infiltrating CD4+ T cells, respectively. Additionally, we uncovered transcriptionally distinct states of microglia along an activation trajectory that may serve different functions, which range from surveillance to antigen presentation and cytokine secretion. Intercellular interactions inferred from transcriptional data suggest that CD4+ T cells facilitate microglial state transitions during the inflammatory response. Our study uncovers the heterogeneity of immune cells mediating neuroinflammatory responses and provides a critical evaluation of the compatibility between rabies-mediated connectivity mapping and single-cell transcriptional profiling. These findings provide additional insights into the distinct contributions of various cell types in mediating different facets of antiviral responses in the brain and will facilitate the design of strategies to circumvent immune responses to improve the efficacy of viral gene delivery.
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Affiliation(s)
| | - Bernardo L. Sabatini
- Department of Neurobiology, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, United States
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15
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Dexamethasone treatment decreases replication of viral hemorrhagic septicemia virus in Epithelioma papulosum cyprini cells. Arch Virol 2017; 162:1387-1392. [PMID: 28155193 DOI: 10.1007/s00705-017-3248-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 01/12/2017] [Indexed: 12/24/2022]
Abstract
The expression of Mx1 in EPC cells after treatment with poly(I:C) or infection with viral hemorrhagic septicemia virus (VHSV) was significantly suppressed by treatment with dexamethasone. However, the titer of VHSV did not increase but instead decreased after dexamethasone treatment. This suggests that dexamethasone not only downregulates type I IFN but also affects certain factors that are necessary for VHSV replication. An important effect of HSP90 on replication of RNA viruses and downregulation of HSP90 by glucocorticoids have been reported. In this study, dexamethasone downregulated HSP90α expression in EPC cells that were stimulated with poly(I:C) or infected with VHSV. Furthermore, cells treated with an HSP90 inhibitor, geldanamycin, showed significantly decreased titers of VHSV, suggesting that HSP90 may be an important host component involved in VHSV replication, and HSP90 inhibition might be one of the causes for the observed reduction in viral titer caused by dexamethasone treatment.
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Patel MR, Jacobson BA, Ji Y, Drees J, Tang S, Xiong K, Wang H, Prigge JE, Dash AS, Kratzke AK, Mesev E, Etchison R, Federspiel MJ, Russell SJ, Kratzke RA. Vesicular stomatitis virus expressing interferon-β is oncolytic and promotes antitumor immune responses in a syngeneic murine model of non-small cell lung cancer. Oncotarget 2016; 6:33165-77. [PMID: 26431376 PMCID: PMC4741756 DOI: 10.18632/oncotarget.5320] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 09/16/2015] [Indexed: 01/01/2023] Open
Abstract
Vesicular stomatitis virus (VSV) is a potent oncolytic virus for many tumors. VSV that produces interferon-β (VSV-IFNβ) is now in early clinical testing for solid tumors. Here, the preclinical activity of VSV and VSV-IFNβ against non-small cell lung cancer (NSCLC) is reported. NSCLC cell lines were treated in vitro with VSV expressing green fluorescence protein (VSV-GFP) and VSV-IFNβ. VSV-GFP and VSV-IFNβ were active against NSCLC cells. JAK/STAT inhibition with ruxolitinib re-sensitized resistant H838 cells to VSV-IFNβ mediated oncolysis. Intratumoral injections of VSV-GFP and VSV-IFNβ reduced tumor growth and weight in H2009 nude mouse xenografts (p < 0.01). A similar trend was observed in A549 xenografts. Syngeneic LM2 lung tumors grown in flanks of A/J mice were injected with VSV-IFNβ intratumorally. Treatment of LM2 tumors with VSV-IFNβ resulted in tumor regression, prolonged survival (p < 0.0001), and cure of 30% of mice. Intratumoral injection of VSV-IFNβ resulted in decreased tumor-infiltrating regulatory T cells (Treg) and increased CD8+ T cells. Tumor cell expression of PDL-1 was increased after VSV-IFNβ treatment. VSV-IFNβ has potent antitumor effects and promotes systemic antitumor immunity. These data support further clinical investigation of VSV-IFNβ for NSCLC.
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Affiliation(s)
- Manish R Patel
- Department of Medicine, Division of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Blake A Jacobson
- Department of Medicine, Division of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Yan Ji
- Department of Medicine, Division of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Jeremy Drees
- Department of Surgery, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Shaogeng Tang
- Department of Medicine, Division of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Kerry Xiong
- Department of Medicine, Division of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Hengbing Wang
- Department of Medicine, Division of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Jennifer E Prigge
- Department of Medicine, Division of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Alexander S Dash
- Department of Medicine, Division of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Andrea K Kratzke
- Department of Medicine, Division of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Emily Mesev
- Department of Medicine, Division of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Ryan Etchison
- Department of Medicine, Division of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
| | | | | | - Robert A Kratzke
- Department of Medicine, Division of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
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Combe M, Garijo R, Geller R, Cuevas JM, Sanjuán R. Single-Cell Analysis of RNA Virus Infection Identifies Multiple Genetically Diverse Viral Genomes within Single Infectious Units. Cell Host Microbe 2016; 18:424-32. [PMID: 26468746 PMCID: PMC4617633 DOI: 10.1016/j.chom.2015.09.009] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 08/26/2015] [Accepted: 09/24/2015] [Indexed: 11/28/2022]
Abstract
Genetic diversity enables a virus to colonize novel hosts, evade immunity, and evolve drug resistance. However, viral diversity is typically assessed at the population level. Given the existence of cell-to-cell variation, it is critical to understand viral genetic structure at the single-cell level. By combining single-cell isolation with ultra-deep sequencing, we characterized the genetic structure and diversity of a RNA virus shortly after single-cell bottlenecks. Full-length sequences from 881 viral plaques derived from 90 individual cells reveal that sequence variants pre-existing in different viral genomes can be co-transmitted within the same infectious unit to individual cells. Further, the rate of spontaneous virus mutation varies across individual cells, and early production of diversity depends on the viral yield of the very first infected cell. These results unravel genetic and structural features of a virus at the single-cell level, with implications for viral diversity and evolution. Genetic diversity is found within viral units infecting an individual cell Viral particles within the same infectious unit interact genetically and functionally The production of viral genetic diversity is marked by widespread cell-to-cell variation Single-cell virus yields determine the early production viral genetic diversity
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Affiliation(s)
- Marine Combe
- Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universitat de València, C/ Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain
| | - Raquel Garijo
- Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universitat de València, C/ Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain
| | - Ron Geller
- Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universitat de València, C/ Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain
| | - José M Cuevas
- Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universitat de València, C/ Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain
| | - Rafael Sanjuán
- Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universitat de València, C/ Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
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18
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Constrained evolvability of interferon suppression in an RNA virus. Sci Rep 2016; 6:24722. [PMID: 27098004 PMCID: PMC4838867 DOI: 10.1038/srep24722] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 04/04/2016] [Indexed: 02/05/2023] Open
Abstract
Innate immunity responses controlled by interferon (IFN) are believed to constitute a major selective pressure shaping viral evolution. Viruses encode a variety of IFN suppressors, but these are often multifunctional proteins that also play essential roles in other steps of the viral infection cycle, possibly limiting their evolvability. Here, we experimentally evolved a vesicular stomatitis virus (VSV) mutant carrying a defect in the matrix protein (M∆51) that abolishes IFN suppression and that has been previously used in the context of oncolytic virotherapy. Serial transfers of this virus in normal, IFN-secreting cells led to a modest recovery of IFN blocking capacity and to weak increases in viral fitness. Full-genome ultra-deep sequencing and phenotypic analysis of population variants revealed that the anti-IFN function of the matrix protein was not restored, and that the Mdelta51 defect was instead compensated by changes in the viral phosphoprotein. We also show that adaptation to IFN-secreting cells can be driven by the selection of fast-growing viruses with no IFN suppression capacity, and that these population variants can be trans-complemented by other, IFN-suppressing variants. Our results thus suggest that virus-virus interactions and alternative strategies of innate immunity evasion can determine the evolution of IFN suppression in a virus.
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19
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Interferon induction by avian reovirus. Virology 2015; 487:104-11. [PMID: 26517397 DOI: 10.1016/j.virol.2015.10.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 06/30/2015] [Accepted: 10/05/2015] [Indexed: 12/17/2022]
Abstract
We have previously shown that the replication of avian reovirus (ARV) in chicken embryo fibroblasts (CEF) is more resistant to the antiviral action of interferon (IFN) than the replication of vesicular stomatitis virus (VSV) or vaccinia virus (VV). In this study we examined the capacity of these three viruses to induce the expression of IFN when infecting avian cells. Efficient expression of both type-α and type-β IFNs, as well as of the double-stranded RNA (dsRNA)-activated protein kinase (PKR), takes place in ARV-infected CEF, but not in cells infected with VSV or VV. PKR expression is not directly induced by ARV infection, but by the IFN secreted by ARV-infected cells. IFN induction in ARV-infected cells requires viral uncoating, but not viral gene expression, a situation similar to that reported for apoptosis induction by ARV-infected cells. However, our results demonstrate that IFN induction by ARV-infected CEF occurs by a caspase-independent mechanism.
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20
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Hernández-Alonso P, Garijo R, Cuevas JM, Sanjuán R. Experimental evolution of an RNA virus in cells with innate immunity defects. Virus Evol 2015; 1:vev008. [PMID: 27774280 PMCID: PMC5014476 DOI: 10.1093/ve/vev008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Experimental evolution studies have shown that RNA viruses respond rapidly to directional selection and thus can adapt efficiently to changes in host cell tropism, antiviral drugs, or other imposed selective pressures. However, the evolution of RNA viruses under relaxed selection has been less extensively explored. Here, we evolved vesicular stomatitis virus in mouse embryonic fibroblasts knocked-out for PKR, a protein with a central role in antiviral innate immunity. Vesicular stomatitis virus adapted to PKR-negative mouse embryonic fibroblasts in a gene-specific manner, since the evolved viruses exhibited little or no fitness improvement in PKR-positive cells. Full-length sequencing revealed the presence of multiple parallel nucleotide substitutions arising in independent evolution lines. However, site-directed mutagenesis showed that the effects of these substitutions were not PKR dependent. In contrast, we found evidence for sign epistasis, such that a given substitution which was positively selected was strongly deleterious when tested as a single mutation. Our results suggest that virus evolution in cells with specific innate immunity defects may drive viral specialization. However, this process is not deterministic at the molecular level, probably because the fixation of mutations which are tolerated under a relaxed selection regime is governed mainly by random genetic drift.
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Affiliation(s)
- Pablo Hernández-Alonso
- Instituto Cavanilles de Biodiversidad y Biología Evolutiva and Departament de Genètica, Universitat de València, Paterna 46980, Spain
| | - Raquel Garijo
- Instituto Cavanilles de Biodiversidad y Biología Evolutiva and Departament de Genètica, Universitat de València, Paterna 46980, Spain
| | - José M Cuevas
- Instituto Cavanilles de Biodiversidad y Biología Evolutiva and Departament de Genètica, Universitat de València, Paterna 46980, Spain
| | - Rafael Sanjuán
- Instituto Cavanilles de Biodiversidad y Biología Evolutiva and Departament de Genètica, Universitat de València, Paterna 46980, Spain
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21
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Timm C, Gupta A, Yin J. Robust kinetics of an RNA virus: Transcription rates are set by genome levels. Biotechnol Bioeng 2015; 112:1655-62. [PMID: 25726926 DOI: 10.1002/bit.25578] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 02/02/2015] [Accepted: 02/16/2015] [Indexed: 12/19/2022]
Abstract
In order to persist in nature, RNA viruses have evolved strategies to grow in diverse host environments. To better understand how such strategies might work, we used qRT-PCR to measure viral RNA species during cellular infections by a model RNA virus, vesicular stomatitis virus (VSV). Absolute levels of the VSV major transcript and genome were measured for infections in BHK and PC3 cells, across different multiplicities of infection (MOI 1, 10, 100), in the absence or presence of protein synthesis, as well as in cells in an interferon-activated anti-viral state. While viral genome replication was delayed in more resistant host cells, kinetic modeling of these data revealed a simple linear relationship between the mRNA production rate and genome levels under all tested conditions. These results indicate that while viral transcription and genome replication both depend on the availability of the viral RNA-dependent RNA polymerase and host cellular resources, transcription proceeds without apparent limits on these resources.
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Affiliation(s)
- Collin Timm
- Department of Chemical and Biological Engineering, Systems Biology Theme, Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, 53706, Wisconsin
| | - Ankur Gupta
- Department of Chemical and Biological Engineering, Systems Biology Theme, Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, 53706, Wisconsin
| | - John Yin
- Department of Chemical and Biological Engineering, Systems Biology Theme, Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, 53706, Wisconsin.
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22
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Rupprecht CE, Kuzmin IV. Why we can prevent, control and possibly treat – but will not eradicate – rabies. Future Virol 2015. [DOI: 10.2217/fvl.15.26] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
ABSTRACT Rabies is an acute, progressive viral encephalitis. Despite historical recognition, millions still remain exposed annually. Most fatalities are of children, although this zoonosis is a vaccine-preventable disease. All developed countries interrupted canine transmission and increasingly, Asian and African communities recognize what Latin Americans demonstrated – dog rabies can be eliminated – by mass application of veterinary vaccines. Realistically, rabies is not a candidate for eradication. Management is lacking for major reservoirs, such as bats. Increasing pre-exposure immunization of individuals at risk, simplification of postexposure schedules, enhancing vaccine delivery by alternative routes, development of less expensive biologics and antiviral drugs, may lessen its impact if applied strategically in a One Health context.
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Affiliation(s)
| | - Ivan V Kuzmin
- University of Texas Medical Branch, Galveston, TX, USA
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23
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Wang Y, Tian Q, Xu X, Yang X, Luo J, Mo W, Peng J, Niu X, Luo Y, Guo X. Recombinant rabies virus expressing IFNα1 enhanced immune responses resulting in its attenuation and stronger immunogenicity. Virology 2014; 468-470:621-630. [PMID: 25310498 DOI: 10.1016/j.virol.2014.09.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 09/09/2014] [Indexed: 12/24/2022]
Abstract
Several studies have shown that type 1 interferons (IFNs) exert multiple biological effects on both innate and adaptive immune responses. Here, we investigated the pathogenicity and immunogenicity of recombinant rabies virus (RABV) expressing canine interferon α1 (rHEP-CaIFNα1). It was shown that Kun Ming (KM) mice that received a single intramuscular immunization with rHEP-CaIFNα1 had an earlier increase and a higher level of virus-neutralizing antibody titers compared with immunization of the parent HEP-Flury. A challenge experiment further confirmed that more mice that were immunized with rHEP-CaIFNα1 survived compared with mice immunized with the parent virus. Quantitative real-time PCR indicated that rHEP-CaIFNα1 induced a stronger innate immune response, especially the type 1 IFN response. Flow cytometry was conducted to show that rHEP-CaIFNα1 recruited more activated B cells in lymph nodes and CD8 T cells in the peripheral blood, which is beneficial to achieve virus clearance in the early infective stage.
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Affiliation(s)
- Yifei Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Qin Tian
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Xiaojuan Xu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Xianfeng Yang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Jun Luo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Weiyu Mo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Jiaojiao Peng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Xuefeng Niu
- The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Yongwen Luo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Xiaofeng Guo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.
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24
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Garijo R, Hernández-Alonso P, Rivas C, Diallo JS, Sanjuán R. Experimental evolution of an oncolytic vesicular stomatitis virus with increased selectivity for p53-deficient cells. PLoS One 2014; 9:e102365. [PMID: 25010337 PMCID: PMC4092128 DOI: 10.1371/journal.pone.0102365] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 06/18/2014] [Indexed: 12/17/2022] Open
Abstract
Experimental evolution has been used for various biotechnological applications including protein and microbial cell engineering, but less commonly in the field of oncolytic virotherapy. Here, we sought to adapt a rapidly evolving RNA virus to cells deficient for the tumor suppressor gene p53, a hallmark of cancer cells. To achieve this goal, we established four independent evolution lines of the vesicular stomatitis virus (VSV) in p53-knockout mouse embryonic fibroblasts (p53-/- MEFs) under conditions favoring the action of natural selection. We found that some evolved viruses showed increased fitness and cytotoxicity in p53-/- cells but not in isogenic p53+/+ cells, indicating gene-specific adaptation. However, full-length sequencing revealed no obvious or previously described genetic changes associated with oncolytic activity. Half-maximal effective dose (EC50) assays in mouse p53-positive colon cancer (CT26) and p53-deficient breast cancer (4T1) cells indicated that the evolved viruses were more effective against 4T1 cells than the parental virus or a reference oncolytic VSV (MΔ51), but showed no increased efficacy against CT26 cells. In vivo assays using 4T1 syngeneic tumor models showed that one of the evolved lines significantly delayed tumor growth compared to mice treated with the parental virus or untreated controls, and was able to induce transient tumor suppression. Our results show that RNA viruses can be specifically adapted typical cancer features such as p53 inactivation, and illustrate the usefulness of experimental evolution for oncolytic virotherapy.
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Affiliation(s)
- Raquel Garijo
- Instituto Cavanilles de Biodiversidad y Biologia Evolutiva, Universidad de Valencia, Valencia, Spain
- Center for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Pablo Hernández-Alonso
- Instituto Cavanilles de Biodiversidad y Biologia Evolutiva, Universidad de Valencia, Valencia, Spain
| | - Carmen Rivas
- Departamento de Biología Molecular y Celular, Centro Nacional de Biotecnología, Madrid, Spain
- Centro de Investigación en Medicina Molecular (CIMUS) and Instituto de Investigaciones Sanitarias (IDIS), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Jean-Simon Diallo
- Center for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Rafael Sanjuán
- Instituto Cavanilles de Biodiversidad y Biologia Evolutiva, Universidad de Valencia, Valencia, Spain
- Department of Genetics, Universidad de Valencia, Valencia, Spain
- * E-mail:
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Varela M, Diaz-Rosales P, Pereiro P, Forn-Cuní G, Costa MM, Dios S, Romero A, Figueras A, Novoa B. Interferon-induced genes of the expanded IFIT family show conserved antiviral activities in non-mammalian species. PLoS One 2014; 9:e100015. [PMID: 24950240 PMCID: PMC4065003 DOI: 10.1371/journal.pone.0100015] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 05/21/2014] [Indexed: 12/24/2022] Open
Abstract
Interferon-induced proteins with tetratricopeptide repeats (IFITs) are involved in the protective response to viral infection, although the precise mechanism of IFITs for reducing viral proliferation is currently unknown. The interaction with the translation initiation factor eIF-3 or viral proteins and the sequestering of viral RNA have been proposed as potential antiviral functions for these proteins. In humans, four members of this family have been characterized. Nevertheless, information about these proteins in fish is almost non-existent. Exploiting the conservation of synteny between human and zebrafish genomes, we have identified ten members of the IFIT family located on four different chromosomes. The induction of these genes was examined both in vitro and in vivo after interferon (IFN) administration and rhabdovirus challenge. Whereas an induction of IFIT genes was observed after interferon treatments (IFNΦ1, IFNΦ2 and IFNΦ3), the viral infection did not affect these IFN-induced genes in vitro, and even reduced the IFN-induced expression of these genes. The response was largely different in vivo, with a broad up-regulation of IFIT genes after viral challenge. In addition, three selected IFITs were cloned in an expression vector and microinjected into zebrafish larvae to examine the protective effect of IFITs upon viral infection. Reduction in the mortality rate was observed confirming a conserved antiviral function in non-mammalian species.
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Affiliation(s)
- Mónica Varela
- Instituto de Investigaciones Marinas (IIM), CSIC, Vigo, Spain
| | | | | | | | - Maria M. Costa
- Instituto de Investigaciones Marinas (IIM), CSIC, Vigo, Spain
| | - Sonia Dios
- Instituto de Investigaciones Marinas (IIM), CSIC, Vigo, Spain
| | | | | | - Beatriz Novoa
- Instituto de Investigaciones Marinas (IIM), CSIC, Vigo, Spain
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26
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An anterograde rabies virus vector for high-resolution large-scale reconstruction of 3D neuron morphology. Brain Struct Funct 2014; 220:1369-79. [PMID: 24723034 PMCID: PMC4409643 DOI: 10.1007/s00429-014-0730-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 02/07/2014] [Indexed: 12/19/2022]
Abstract
Glycoprotein-deleted rabies virus (RABV ∆G) is a powerful tool for the analysis of neural circuits. Here, we demonstrate the utility of an anterograde RABV ∆G variant for novel neuroanatomical approaches involving either bulk or sparse neuronal populations. This technology exploits the unique features of RABV ∆G vectors, namely autonomous, rapid high-level expression of transgenes, and limited cytotoxicity. Our vector permits the unambiguous long-range and fine-scale tracing of the entire axonal arbor of individual neurons throughout the brain. Notably, this level of labeling can be achieved following infection with a single viral particle. The vector is effective over a range of ages (>14 months) aiding the studies of neurodegenerative disorders or aging, and infects numerous cell types in all brain regions tested. Lastly, it can also be readily combined with retrograde RABV ∆G variants. Together with other modern technologies, this tool provides new possibilities for the investigation of the anatomy and physiology of neural circuits.
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27
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Preservation of dendritic cell function during vesicular stomatitis virus infection reflects both intrinsic and acquired mechanisms of resistance to suppression of host gene expression by viral M protein. J Virol 2013; 87:11730-40. [PMID: 23986580 DOI: 10.1128/jvi.00680-13] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Inhibition of host-directed gene expression by the matrix (M) protein of vesicular stomatitis virus (VSV) effectively blocks host antiviral responses, promotes virus replication, and disables the host cell. However, dendritic cells (DC) have the capacity to resist these effects and remain functional during VSV infection. Here, the mechanisms of DC resistance to M protein and their subsequent maturation were addressed. Flt3L-derived murine bone marrow dendritic cells (FDC), which phenotypically resemble resident splenic DC, continued to synthesize cellular proteins and matured during single-cycle (high-multiplicity) and multicycle (low-multiplicity) infection with VSV. Granulocyte-macrophage colony-stimulating factor (GM-CSF)-derived myeloid DC (GDC), which are susceptible to M protein effects, were nevertheless capable of maturing, but the response was delayed and occurred only during multicycle infection. FDC resistance was manifested early and was type I interferon (IFN) receptor (IFNAR) and MyD88 independent, but sustained resistance required IFNAR. MyD88-dependent signaling contributed to FDC maturation during single-cycle infection but was dispensable during multicycle infection. Similar to FDC, splenic DC were capable of maturing in vivo during the first 24 h of infection with VSV, and neither Toll-like receptor 7 (TLR7) nor MyD88 was required. We conclude that FDC resistance to M protein is controlled by an intrinsic, MyD88-independent mechanism that operates early in infection and is augmented later in infection by type I IFN. In contrast, while GDC are not intrinsically resistant, they can acquire resistance during multicycle infection. In vivo, splenic DC resist the inhibitory effects of VSV, and as in multicycle FDC infection, MyD88-independent signaling events control their maturation.
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28
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Lawrence TM, Wanjalla CN, Gomme EA, Wirblich C, Gatt A, Carnero E, García-Sastre A, Lyles DS, McGettigan JP, Schnell MJ. Comparison of Heterologous Prime-Boost Strategies against Human Immunodeficiency Virus Type 1 Gag Using Negative Stranded RNA Viruses. PLoS One 2013; 8:e67123. [PMID: 23840600 PMCID: PMC3694142 DOI: 10.1371/journal.pone.0067123] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 05/14/2013] [Indexed: 11/19/2022] Open
Abstract
This study analyzed a heterologous prime-boost vaccine approach against HIV-1 using three different antigenically unrelated negative-stranded viruses (NSV) expressing HIV-1 Gag as vaccine vectors: rabies virus (RABV), vesicular stomatitis virus (VSV) and Newcastle disease virus (NDV). We hypothesized that this approach would result in more robust cellular immune responses than those achieved with the use of any of the vaccines alone in a homologous prime-boost regimen. To this end, we primed BALB/c mice with each of the NSV-based vectors. Primed mice were rested for thirty-five days after which we administered a second immunization with the same or heterologous NSV-Gag viruses. The magnitude and quality of the Gag-specific CD8+ T cells in response to these vectors post boost were measured. In addition, we performed challenge experiments using vaccinia virus expressing HIV-1 Gag (VV-Gag) thirty-three days after the boost inoculation. Our results showed that the choice of the vaccine used for priming was important for the detected Gag-specific CD8+ T cell recall responses post boost and that NDV-Gag appeared to result in a more robust recall of CD8+ T cell responses independent of the prime vaccine used. However, the different prime-boost strategies were not distinct for the parameters studied in the challenge experiments using VV-Gag but did indicate some benefits compared to single immunizations. Taken together, our data show that NSV vectors can individually stimulate HIV-Gag specific CD8+ T cells that are effectively recalled by other NSV vectors in a heterologous prime-boost approach. These results provide evidence that RABV, VSV and NDV can be used in combination to develop vaccines needing prime-boost regimens to stimulate effective immune responses.
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Affiliation(s)
- Tessa M. Lawrence
- Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Celestine N. Wanjalla
- Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Emily A. Gomme
- Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Christoph Wirblich
- Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Anthony Gatt
- Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Elena Carnero
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
- Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Adolfo García-Sastre
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
- Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Douglas S. Lyles
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - James P. McGettigan
- Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Matthias J. Schnell
- Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
- Jefferson Vaccine Center, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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29
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Wild-type rabies virus phosphoprotein is associated with viral sensitivity to type I interferon treatment. Arch Virol 2013; 158:2297-305. [DOI: 10.1007/s00705-013-1743-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Accepted: 04/19/2013] [Indexed: 12/19/2022]
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30
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Moussavi M, Tearle H, Fazli L, Bell JC, Jia W, Rennie PS. Targeting and killing of metastatic cells in the transgenic adenocarcinoma of mouse prostate model with vesicular stomatitis virus. Mol Ther 2013; 21:842-8. [PMID: 23337981 DOI: 10.1038/mt.2012.285] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Vesicular stomatitis virus (VSV) is an oncolytic virus which selectively infects and kills cancer cells. The goal of the present study was to determine whether VSV is capable of targeting metastatic lesions that arise in situ in the transgenic adenocarcinoma of the mouse prostate (TRAMP) model. The interferon (IFN)-responsive luciferase containing VSV(AV3) strain was injected intraprostatically into both control and TRAMP mice. Distribution, infectivity, apoptosis, and status of the IFN response were evaluated at the site of viral injection (prostate), as well as in metastatic lesions (lymph nodes), through plaque, polymerase chain reaction (PCR), and immunohistochemical analysis. Bioluminescence analyses demonstrated that VSV(AV3) persisted at high levels in the prostate region of TRAMP mice for up to 96 hours, but at relatively low levels and for only 48 hours in control mice. Live virus was discovered in the lymph nodes of TRAMP mice, but not in control mice. TUNEL staining revealed increased cell death in VSV(AV3) infected metastatic cells present in the lymph nodes of TRAMP mice. There was an evidence of IFN activation in lymph nodes containing metastatic cells. Our results indicate that intraprostatic injections of VSV(AV3) can be used as a means to infect and kill metastatic lesions associated with advanced prostate cancer.
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Affiliation(s)
- Maryam Moussavi
- Vancouver Prostate Centre, Vancouver, British Columbia, Canada
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31
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Neuroattenuation of vesicular stomatitis virus through picornaviral internal ribosome entry sites. J Virol 2013; 87:3217-28. [PMID: 23283963 DOI: 10.1128/jvi.02984-12] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Vesicular stomatitis virus (VSV) is potent and a highly promising agent for the treatment of cancer. However, translation of VSV oncolytic virotherapy into the clinic is being hindered by its inherent neurotoxicity. It has been demonstrated that selected picornaviral internal ribosome entry site (IRES) elements possess restricted activity in neuronal tissues. We therefore sought to determine whether the picornavirus IRES could be engineered into VSV to attenuate its neuropathogenicity. We have used IRES elements from human rhinovirus type 2 (HRV2) and foot-and-mouth disease virus (FMDV) to control the translation of the matrix gene (M), which plays a major role in VSV virulence. In vitro studies revealed slowed growth kinetics of IRES-controlled VSVs in most of the cell lines tested. However, in vivo studies explicitly demonstrated that IRES elements of HRV2 and FMDV severely attenuated the neurovirulence of VSV without perturbing its oncolytic potency.
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32
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Ran Z, Chen Y, Shen H, Xiang X, Liu Q, Bawa B, Qi W, Zhu L, Young A, Richt J, Ma W, Li F. In vitro and in vivo replication of influenza A H1N1 WSN33 viruses with different M1 proteins. J Gen Virol 2012; 94:884-895. [PMID: 23255622 DOI: 10.1099/vir.0.046219-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The M1 protein is a major structural protein that has multiple functions in various steps within the life cycle of the influenza A virus (IAV). However, little is currently known about the role of M1 in IAV replication in vivo and the associated pathogenesis. In this study, six isogenic H1N1 WSN33 viruses, constructed to express unique M1 proteins derived from various strains, subtypes or WSN33 itself, were tested to determine in vitro and in vivo functional exchangeability of M1 proteins in the replication and pathogenesis of the WSN33 virus. Despite five chimeric M1 viruses replicating to levels similar to those of the parental WSN33 virus in cell cultures, all M1 chimeras exhibited improved replication and enhanced virulence in mice when compared with the WSN33 virus. Interestingly, M1 proteins derived from swine viruses caused more severe clinical diseases than those from human or quail. These data indicate that the M1 protein is an important determinant of viral replication and pathogenic properties in mice, although the functions of M1 observed in vivo are not adequately reflected in simple infections of cultured cells. Chimeric M1 viruses that are variable in their clinical manifestations described here will aid future understanding of the role of M1 in IAV pathogenesis.
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Affiliation(s)
- Zhiguang Ran
- Veterinary Diagnostic Division, Chongqing Municipal Center for Animal Disease Control and Prevention, Chongqing 401120, PR China.,Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, USA.,Department of Biology and Microbiology, South Dakota State University, Brookings, SD, USA
| | - Ying Chen
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, USA
| | - Huigang Shen
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, USA
| | - Xiaoxiao Xiang
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, USA.,Department of Biology and Microbiology, South Dakota State University, Brookings, SD, USA
| | - Qinfang Liu
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, USA
| | - Bhupinder Bawa
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, USA
| | - Wenbao Qi
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, USA
| | - Laihua Zhu
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, USA.,Department of Biology and Microbiology, South Dakota State University, Brookings, SD, USA
| | - Alan Young
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, USA
| | - Juergen Richt
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, USA
| | - Wenjun Ma
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, USA
| | - Feng Li
- Shandong Academy of Agricultural Sciences, Jinan, PR China.,Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, USA.,Department of Biology and Microbiology, South Dakota State University, Brookings, SD, USA
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33
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Scagnolari C, Caputo B, Trombetti S, Cacciotti G, Soldà A, Spano L, Villari P, Della Torre A, Nowotny N, Antonelli G. Usutu virus growth in human cell lines: induction of and sensitivity to type I and III interferons. J Gen Virol 2012; 94:789-795. [PMID: 23255619 DOI: 10.1099/vir.0.046433-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The mechanisms of Usutu virus (USUV) pathogenesis are largely unknown. The aim of this study was to evaluate the sensitivity of USUV to interferon (IFN) and the capacity of USUV to stimulate IFN production. Initial experiments were conducted to characterize the susceptibility of human cell lines to USUV infection and to evaluate the single-growth cycle replication curve of USUV. Results indicate that USUV is able to infect a variety of human cell lines, completing the replication cycle in Hep-2 and Vero cells within 48 h. Pre-treatment of cells with types I and III IFNs significantly inhibited the replication of USUV. However, the inhibitory effects of IFNs were considerably less if IFN was added after viral infection had been initiated. Also, USUV weakly induced types I and III IFNs.
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Affiliation(s)
- Carolina Scagnolari
- Department of Molecular Medicine, Laboratory of Virology, 'Sapienza' University of Rome, Viale di Porta Tiburtina 28, 00185, Rome, Italy
| | - Beniamino Caputo
- Parasitology Unit, Department of Public Health and Infectious Diseases, 'Sapienza' University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Simona Trombetti
- Department of Molecular Medicine, Laboratory of Virology, 'Sapienza' University of Rome, Viale di Porta Tiburtina 28, 00185, Rome, Italy
| | - Giulia Cacciotti
- Department of Molecular Medicine, Laboratory of Virology, 'Sapienza' University of Rome, Viale di Porta Tiburtina 28, 00185, Rome, Italy
| | - Annalisa Soldà
- Department of Molecular Medicine, Laboratory of Virology, 'Sapienza' University of Rome, Viale di Porta Tiburtina 28, 00185, Rome, Italy
| | - Lucia Spano
- Department of Molecular Medicine, Laboratory of Virology, 'Sapienza' University of Rome, Viale di Porta Tiburtina 28, 00185, Rome, Italy
| | - Paolo Villari
- Department of Public Health and Infectious Diseases, 'Sapienza' University of Rome, Viale Regina Elena 324, 00185 Rome, Italy
| | - Alessandra Della Torre
- Parasitology Unit, Department of Public Health and Infectious Diseases, 'Sapienza' University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Norbert Nowotny
- Department of Microbiology and Immunology, College of Medicine and Health Sciences, Sultan Qaboos University, PO Box 35, Al-Khod, Muscat 123, Oman.,Viral Zoonoses, Emerging and Vector-Borne Infections Group, Institute of Virology, University of Veterinary Medicine Vienna, Veterinärplatz 1, A-1210 Vienna, Austria
| | - Guido Antonelli
- Department of Molecular Medicine, Laboratory of Virology, 'Sapienza' University of Rome, Viale di Porta Tiburtina 28, 00185, Rome, Italy
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34
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Peng DW, Zheng GH, Zheng ZZ, Tong QX, Ming YL. Orchid fleck virus: an unclassified bipartite, negative-sense RNA plant virus. Arch Virol 2012; 158:313-23. [DOI: 10.1007/s00705-012-1506-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Accepted: 09/02/2012] [Indexed: 12/27/2022]
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35
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Kim MS, Kim KH. Effects of NV gene knock-out recombinant viral hemorrhagic septicemia virus (VHSV) on Mx gene expression in Epithelioma papulosum cyprini (EPC) cells and olive flounder (Paralichthys olivaceus). FISH & SHELLFISH IMMUNOLOGY 2012; 32:459-463. [PMID: 22227004 DOI: 10.1016/j.fsi.2011.12.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 12/28/2011] [Accepted: 12/28/2011] [Indexed: 05/31/2023]
Abstract
To determine whether the NV gene of viral hemorrhagic septicemia virus (VHSV) is related to the type I interferon response of hosts, expression of Mx gene in Epithelioma papulosum cyprini (EPC) cells and in olive flounder (Paralichthys olivaceus) in response to infection with either wild-type VHSV or recombinant VHSVs (rVHSV-ΔNV-EGFP and rVHSV-wild) was investigated. A reporter vector was constructed for measuring Mx gene expression using olive flounder Mx promoter, in which the reporter Metridia luciferase was designed to be excreted to culture medium to facilitate measurement. The highest increase of luciferase activity was detected from supernatant of cells infected with rVHSV-ΔNV-EGFP. In contrast cells infected with wild-type VHSV showed a slight increase of the luciferase activity. Interestingly, cells infected with rVHSV-wild that has artificially changed nucleotides just before and after the NV gene ORF, also showed highly increased luciferase activity, but the increased amplitude was lower than that by rVHSV-ΔNV-EGFP. These results strongly suggest that the NV protein of VHSV plays an important role in suppressing interferon response in host cells, which provides a condition for the viruses to efficiently proliferate in host cells. In an in vivo experiment, the Mx gene expression in olive flounder challenged with the rVHSV-ΔNV-EGFP was clearly higher than fish challenged with rVHSV-wild or wild-type VHSV, suggesting that lacking of the NV gene in the genome of rVHSV-ΔNV-EGFP brought to strong interferon response that subsequently inhibit viral replication in fish.
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Affiliation(s)
- Min Sun Kim
- Department of Aquatic Life Medicine, Pukyong National University, Nam-gu 599-1, Busan 608-737, Republic of South Korea
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36
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Gerlier D, Lyles DS. Interplay between innate immunity and negative-strand RNA viruses: towards a rational model. Microbiol Mol Biol Rev 2011; 75:468-90, second page of table of contents. [PMID: 21885681 PMCID: PMC3165544 DOI: 10.1128/mmbr.00007-11] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The discovery of a new class of cytosolic receptors recognizing viral RNA, called the RIG-like receptors (RLRs), has revolutionized our understanding of the interplay between viruses and host cells. A tremendous amount of work has been accumulating to decipher the RNA moieties required for an RLR agonist, the signal transduction pathway leading to activation of the innate immunity orchestrated by type I interferon (IFN), the cellular and viral regulators of this pathway, and the viral inhibitors of the innate immune response. Previous reviews have focused on the RLR signaling pathway and on the negative regulation of the interferon response by viral proteins. The focus of this review is to put this knowledge in the context of the virus replication cycle within a cell. Likewise, there has been an expansion of knowledge about the role of innate immunity in the pathophysiology of viral infection. As a consequence, some discrepancies have arisen between the current models of cell-intrinsic innate immunity and current knowledge of virus biology. This holds particularly true for the nonsegmented negative-strand viruses (Mononegavirales), which paradoxically have been largely used to build presently available models. The aim of this review is to bridge the gap between the virology and innate immunity to favor the rational building of a relevant model(s) describing the interplay between Mononegavirales and the innate immune system.
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Affiliation(s)
- Denis Gerlier
- INSERM U758, CERVI, 21 avenue Tony Garnier, 69007 Lyon, France.
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37
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Abstract
Until recently, single-stranded negative sense RNA viruses (ssNSVs) were one of only a few important human viral pathogens, which could not be created from cDNA. The inability to manipulate their genomes hindered their detailed genetic analysis. A key paper from Conzelmann's laboratory in 1994 changed this with the publication of a method to recover rabies virus (RABV) from cDNA. This discovery not only dramatically changed the broader field of ssNSV biology but also opened a whole new avenue for studying RABV pathogenicity, developing novel RABV vaccines as well a new generation of RABV-based vaccine vectors, and creating research tools important in neuroscience such as neuronal tracing.
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Affiliation(s)
- Emily A Gomme
- Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
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