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Mancini MV, Tandavanitj R, Ant TH, Murdochy SM, Gingell DD, Setthapramote C, Natsrita P, Kohl A, Sinkins SP, Patel AH, De Lorenzo G. Evaluation of an Engineered Zika Virus-Like Particle Vaccine Candidate in a Mosquito-Mouse Transmission Model. mSphere 2023; 8:e0056422. [PMID: 36840596 PMCID: PMC10117074 DOI: 10.1128/msphere.00564-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 01/31/2023] [Indexed: 02/25/2023] Open
Abstract
The primary route of Zika virus (ZIKV) transmission is through the bite of an infected Aedes mosquito, when it probes the skin of a vertebrate host during a blood meal. Viral particles are injected into the bite site together with mosquito saliva and a complex mixture of other components. Some of them are known to play a key role in the augmentation of the arbovirus infection in the host, with increased viremia and/or morbidity. This vector-derived contribution to the infection is not usually considered when vaccine candidates are tested in preclinical animal models. In this study, we performed a preclinical validation of a promising ZIKV vaccine candidate in a mosquito-mouse transmission model using both Asian and African ZIKV lineages. Mice were immunized with engineered ZIKV virus-like particles and subsequently infected through the bite of ZIKV-infected Aedes aegypti mosquitoes. Despite a mild increase in viremia in mosquito-infected mice compared to those infected through traditional needle injection, the vaccine protected the animals from developing the disease and strongly reduced viremia. In addition, during peak viremia, naive mosquitoes were allowed to feed on infected vaccinated and nonvaccinated mice. Our analysis of viral titers in mosquitos showed that the vaccine was able to inhibit virus transmission from the host to the vector. IMPORTANCE Zika is a mosquito-borne viral disease, causing acute debilitating symptoms and complications in infected individuals and irreversible neuronal abnormalities in newborn children. The primary vectors of ZIKV are Aedes aegypti mosquitoes. Despite representing a significant public health burden with a widespread transmission in many regions of the world, Zika remains a neglected disease with no effective antiviral therapies or approved vaccines. It is known that components of the mosquito bite lead to an enhancement of viral infection and spread, but this aspect is often overlooked when vaccine candidates undergo preclinical validation. In this study, we included mosquitoes as viral vectors, demonstrating the ability of a promising vaccine candidate to protect animals against ZIKV infections after the bite of an infected mosquito and to also prevent its further transmission. These findings represent an additional crucial step for the development of an effective prevention tool for clinical use.
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Affiliation(s)
| | - Rapeepat Tandavanitj
- MRC–University of Glasgow Centre for Virus Research, Glasgow, Scotland, United Kingdom
- Biologicals Research Group, Research and Development Institute, Government Pharmaceutical Organization, Bangkok, Thailand
| | - Thomas H. Ant
- MRC–University of Glasgow Centre for Virus Research, Glasgow, Scotland, United Kingdom
| | - Shivan M. Murdochy
- MRC–University of Glasgow Centre for Virus Research, Glasgow, Scotland, United Kingdom
| | - Daniel D. Gingell
- MRC–University of Glasgow Centre for Virus Research, Glasgow, Scotland, United Kingdom
| | - Chayanee Setthapramote
- MRC–University of Glasgow Centre for Virus Research, Glasgow, Scotland, United Kingdom
- Department of Clinical Pathology, Faculty of Medicine Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand
| | - Piyatida Natsrita
- MRC–University of Glasgow Centre for Virus Research, Glasgow, Scotland, United Kingdom
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Alain Kohl
- MRC–University of Glasgow Centre for Virus Research, Glasgow, Scotland, United Kingdom
| | - Steven P. Sinkins
- MRC–University of Glasgow Centre for Virus Research, Glasgow, Scotland, United Kingdom
| | - Arvind H. Patel
- MRC–University of Glasgow Centre for Virus Research, Glasgow, Scotland, United Kingdom
| | - Giuditta De Lorenzo
- MRC–University of Glasgow Centre for Virus Research, Glasgow, Scotland, United Kingdom
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Tatara JM, Rosa RL, Varela APM, Teixeira TF, Sesterheim P, Gris A, Driemeier D, Moraes ANS, Berger M, Peña RD, Roehe PM, Souza DOG, Guimarães JA, Campos AR, Santi L, Beys-da-Silva WO. Differential proteomics of Zika virus (ZIKV) infection reveals molecular changes potentially involved in immune system evasion by a Brazilian strain of ZIKV. Arch Virol 2023; 168:70. [PMID: 36658439 DOI: 10.1007/s00705-022-05629-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 09/01/2022] [Indexed: 01/21/2023]
Abstract
Zika virus (ZIKV) is an arbovirus that was responsible for multiple outbreaks from 2007 to 2015. It has been linked to cases of microcephaly in Brazil in 2015, among other neurological disorders. Differences among strains might be the reason for different clinical outcomes of infection. To evaluate this hypothesis, we performed a comparative proteomic analysis of Vero cells infected with the African strain MR766 (ZIKVAFR) and the Brazilian strain 17 SM (ZIKVBR). A total of 550 proteins were identified as differentially expressed in ZIKVAFR- or ZIKVBR-infected cells compared to the control. The main findings included upregulation of immune system pathways (neutrophil degranulation and adaptive/innate immune system) and potential activation of immune-system-related pathways by ZIKVAFR (mTOR, JAK-STAT, NF-κB, and others) compared with the ZIKVBR/control. In addition, phagocytosis by macrophages and engulfment of leukocytes were activated in ZIKVAFR infection. An in vivo analysis using an immunocompetent C57BL/6N mouse model identified interstitial pneumonia with neutrophil infiltration in the lungs only in mice infected with ZIKVBR at 48 hours postinfection, with a significant amount of virus detected. Likewise, only animals infected with ZIKVBR had viral material in the cytoplasm of lung macrophages. These results suggest that activation of the immune system by ZIKVAFR infection may lead to faster viral clearance by immune cells.
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Affiliation(s)
- Juliana M Tatara
- Post-Graduation Program in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Av Ipiranga, 2752 suit 709, Porto Alegre, RS, Brazil
| | - Rafael L Rosa
- Post-Graduation Program in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Av Ipiranga, 2752 suit 709, Porto Alegre, RS, Brazil
| | - Ana Paula M Varela
- Department of Microbiology, Immunology and Parasitology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Graduate Program in Biosciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Tais F Teixeira
- Center for Experimental Cardiology, Institute of Cardiology, Porto Alegre, Brazil
| | - Patrícia Sesterheim
- Center for Experimental Cardiology, Institute of Cardiology, Porto Alegre, Brazil
| | - Anderson Gris
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - David Driemeier
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Amanda N S Moraes
- Post-Graduation Program in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Av Ipiranga, 2752 suit 709, Porto Alegre, RS, Brazil
| | - Markus Berger
- Experimental Research Center, Clinical Hospital of Porto Alegre, Porto Alegre, Brazil
| | - Ramon D Peña
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, USA
| | - Paulo M Roehe
- Department of Microbiology, Immunology and Parasitology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Diogo O G Souza
- Department of Biochemistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Jorge A Guimarães
- Post-Graduation Program in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Av Ipiranga, 2752 suit 709, Porto Alegre, RS, Brazil.,Center for Experimental Cardiology, Institute of Cardiology, Porto Alegre, Brazil
| | | | - Lucélia Santi
- Post-Graduation Program in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Av Ipiranga, 2752 suit 709, Porto Alegre, RS, Brazil.,Experimental Research Center, Clinical Hospital of Porto Alegre, Porto Alegre, Brazil.,Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Walter O Beys-da-Silva
- Post-Graduation Program in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Av Ipiranga, 2752 suit 709, Porto Alegre, RS, Brazil. .,Experimental Research Center, Clinical Hospital of Porto Alegre, Porto Alegre, Brazil. .,Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
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3
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Pathogenicity and Structural Basis of Zika Variants with Glycan Loop Deletions in the Envelope Protein. J Virol 2022; 96:e0087922. [PMID: 36377874 PMCID: PMC9749469 DOI: 10.1128/jvi.00879-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The glycan loop of Zika virus (ZIKV) envelope protein (E) contains the glycosylation site and has been well documented to be important for viral pathogenesis and transmission. In the present study, we report that deletions in the E glycan loop, which were recorded in African ZIKV strains previously, have re-emerged in their contemporary Asian lineages. Here, we generated recombinant ZIKV containing specific deletions in the E glycan loop by reverse genetics. Extensive in vitro and in vivo characterization of these deletion mutants demonstrated an attenuated phenotype in an adult A129 mouse model and reduced oral infections in mosquitoes. Surprisingly, these glycan loop deletion mutants exhibited an enhanced neurovirulence phenotype, and resulted in a more severe microcephalic brain in neonatal mouse models. Crystal structures of the ZIKV E protein and a deletion mutant at 2.5 and 2.6 Å, respectively, revealed that deletion of the glycan loop induces encephalitic flavivirus-like conformational alterations, including the appearance of perforations on the surface and a clear change in the topology of the loops. Overall, our results demonstrate that the E glycan loop deletions represent neonatal mouse neurovirulence markers of ZIKV. IMPORTANCE Zika virus (ZIKV) has been identified as a cause of microcephaly and acquired evolutionary mutations since its discovery. Previously deletions in the E glycan loop were recorded in African ZIKV strains, which have re-emerged in the contemporary Asian lineages recently. The glycan loop deletion mutants are not glycosylated, which are attenuated in adult A129 mouse model and reduced oral infections in mosquitoes. More importantly, the glycan loop deletion mutants induce an encephalitic flavivirus-like conformational alteration in the E homodimer, resulting in a significant enhancement of neonatal mouse neurovirulence. This study underscores the critical role of glycan loop deletion mutants in ZIKV pathogenesis, highlighting a need for global virological surveillance for such ZIKV variants.
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Jung HG, Cho H, Kim M, Jung H, Bak Y, Lee SY, Seo HY, Son YM, Woo H, Yoon G, Kim SJ, Oh JW. Influence of Zika virus 3'-end sequence and nonstructural protein evolution on the viral replication competence and virulence. Emerg Microbes Infect 2022; 11:2447-2465. [PMID: 36149812 PMCID: PMC9621255 DOI: 10.1080/22221751.2022.2128433] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 09/20/2022] [Indexed: 11/09/2022]
Abstract
Zika virus (ZIKV) has been circulating in human networks over 70 years since its first appearance in Africa, yet little is known about whether the viral 3'-terminal sequence and nonstructural (NS) protein diverged genetically from ancient ZIKV have different effects on viral replication and virulence in currently prevailing Asian lineage ZIKV. Here we show, by a reverse genetics approach using an infectious cDNA clone for a consensus sequence (Con1) of ZIKV, which represents Asian ZIKV strains, and another clone derived from the MR766 strain isolated in Uganda, Africa in 1947, that the 3'-end sequence -UUUCU-3' homogeneously present in MR766 genome and the -GUCU-3' sequence strictly conserved in Asian ZIKV isolates are functionally equivalent in viral replication and gene expression. By gene swapping experiments using the two infectious cDNA clones, we show that the NS1-5 proteins of MR766 enhance replication competence of ZIKV Con1. The Con1, which was less virulent than MR766, acquired severe bilateral hindlimb paralysis when its NS1-5 genes were replaced by the counterparts of MR766 in type I interferon receptor (IFNAR1)-deficient A129 mice. Moreover, MR766 NS5 RNA-dependent RNA polymerase (RdRp) alone also rendered the Con1 virulent, despite there being no difference in RdRp activity between MR766 and Con1 NS5 proteins. By contrast, the Con1 derivatives expressing MR766 Nsps, like Con1, did not develop severe disease in wild-type mice treated with an IFNAR1 blocking antibody. Together, our findings uncover an unprecedented role for ZIKV NS proteins in determining viral pathogenicity in immunocompromised hosts.
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Affiliation(s)
- Hae-Gwang Jung
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Hee Cho
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Minwoo Kim
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Haewon Jung
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Yeonju Bak
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Se-Young Lee
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Han Young Seo
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Yu-Min Son
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Hawon Woo
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Gone Yoon
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Seong-Jun Kim
- Center for Convergent Research of Emerging Virus Infection, Korea Research Institute of Chemical Technology, Daejeon, South Korea
| | - Jong-Won Oh
- Department of Biotechnology, Yonsei University, Seoul, South Korea
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5
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Fell R, Potter JA, Yuille S, Salguero FJ, Watson R, Ngabo D, Gooch K, Hewson R, Howat D, Dowall S. Activity of a Carbohydrate-Binding Module Therapy, Neumifil, against SARS-CoV-2 Disease in a Hamster Model of Infection. Viruses 2022; 14:v14050976. [PMID: 35632718 PMCID: PMC9147764 DOI: 10.3390/v14050976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/01/2022] [Accepted: 05/03/2022] [Indexed: 11/16/2022] Open
Abstract
The rapid global spread of severe acute respiratory coronavirus 2 (SARS-CoV-2) has resulted in an urgent effort to find efficacious therapeutics. Broad-spectrum therapies which could be used for other respiratory pathogens confer advantages, as do those based on targeting host cells that are not prone to the development of resistance by the pathogen. We tested an intranasally delivered carbohydrate-binding module (CBM) therapy, termed Neumifil, which is based on a CBM that has previously been shown to offer protection against the influenza virus through the binding of sialic acid receptors. Using the recognised hamster model of SARS-CoV-2 infection, we demonstrate that Neumifil significantly reduces clinical disease severity and pathological changes in the nasal cavity. Furthermore, we demonstrate Neumifil binding to the human angiotensin-converting enzyme 2 (ACE2) receptor and spike protein of SARS-CoV-2. This is the first report describing the testing of this type of broad-spectrum antiviral therapy in vivo and provides evidence for the advancement of Neumifil in further preclinical and clinical studies.
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Affiliation(s)
- Rachel Fell
- United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury SP4 0JG, UK; (R.F.); (F.J.S.); (R.W.); (D.N.); (K.G.); (R.H.)
| | - Jane A. Potter
- Pneumagen Ltd., Kinburn Castle, Doubledykes Road, St Andrews, Fife KY16 9DR, UK; (J.A.P.); (S.Y.); (D.H.)
| | - Samantha Yuille
- Pneumagen Ltd., Kinburn Castle, Doubledykes Road, St Andrews, Fife KY16 9DR, UK; (J.A.P.); (S.Y.); (D.H.)
| | - Franscisco J. Salguero
- United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury SP4 0JG, UK; (R.F.); (F.J.S.); (R.W.); (D.N.); (K.G.); (R.H.)
| | - Robert Watson
- United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury SP4 0JG, UK; (R.F.); (F.J.S.); (R.W.); (D.N.); (K.G.); (R.H.)
| | - Didier Ngabo
- United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury SP4 0JG, UK; (R.F.); (F.J.S.); (R.W.); (D.N.); (K.G.); (R.H.)
| | - Karen Gooch
- United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury SP4 0JG, UK; (R.F.); (F.J.S.); (R.W.); (D.N.); (K.G.); (R.H.)
| | - Roger Hewson
- United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury SP4 0JG, UK; (R.F.); (F.J.S.); (R.W.); (D.N.); (K.G.); (R.H.)
| | - David Howat
- Pneumagen Ltd., Kinburn Castle, Doubledykes Road, St Andrews, Fife KY16 9DR, UK; (J.A.P.); (S.Y.); (D.H.)
| | - Stuart Dowall
- United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury SP4 0JG, UK; (R.F.); (F.J.S.); (R.W.); (D.N.); (K.G.); (R.H.)
- Correspondence:
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Abstract
Zika virus is a mosquito-borne flavivirus known to cause severe birth defects and neuroimmunological disorders. We have previously demonstrated that mosquito transmission of Zika virus decreases with temperature. While transmission was optimized at 29°C, it was limited at cool temperatures (<22°C) due to poor virus establishment in the mosquitoes. Temperature is one of the strongest drivers of vector-borne disease transmission due to its profound effect on ectothermic mosquito vectors, viruses, and their interaction. Although there is substantial evidence of temperature effects on arbovirus replication and dissemination inside mosquitoes, little is known about whether temperature affects virus replication directly or indirectly through mosquito physiology. In order to determine the mechanisms behind temperature-induced changes in Zika virus transmission potential, we investigated different steps of the virus replication cycle in mosquito cells (C6/36) at optimal (28°C) and cool (20°C) temperatures. We found that the cool temperature did not alter Zika virus entry or translation, but it affected genome replication and reduced the amount of double-stranded RNA replication intermediates. If replication complexes were first formed at 28°C and the cells were subsequently shifted to 20°C, the late steps in the virus replication cycle were efficiently completed. These data suggest that cool temperature decreases the efficiency of Zika virus genome replication in mosquito cells. This phenotype was observed in the Asian lineage of Zika virus, while the African lineage Zika virus was less restricted at 20°C. IMPORTANCE With half of the human population at risk, arboviral diseases represent a substantial global health burden. Zika virus, previously known to cause sporadic infections in humans, emerged in the Americas in 2015 and quickly spread worldwide. There was an urgent need to better understand the disease pathogenesis and develop therapeutics and vaccines, as well as to understand, predict, and control virus transmission. In order to efficiently predict the seasonality and geography for Zika virus transmission, we need a deeper understanding of the host-pathogen interactions and how they can be altered by environmental factors such as temperature. Identifying the step in the virus replication cycle that is inhibited under cool conditions can have implications in modeling the temperature suitability for arbovirus transmission as global environmental patterns change. Understanding the link between pathogen replication and environmental conditions can potentially be exploited to develop new vector control strategies in the future.
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Mapalagamage M, Weiskopf D, Sette A, De Silva AD. Current Understanding of the Role of T Cells in Chikungunya, Dengue and Zika Infections. Viruses 2022; 14:v14020242. [PMID: 35215836 PMCID: PMC8878350 DOI: 10.3390/v14020242] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 01/14/2022] [Accepted: 01/15/2022] [Indexed: 02/06/2023] Open
Abstract
Arboviral infections such as Chikungunya (CHIKV), Dengue (DENV) and Zika (ZIKV) are a major disease burden in tropical and sub-tropical countries, and there are no effective vaccinations or therapeutic drugs available at this time. Understanding the role of the T cell response is very important when designing effective vaccines. Currently, comprehensive identification of T cell epitopes during a DENV infection shows that CD8 and CD4 T cells and their specific phenotypes play protective and pathogenic roles. The protective role of CD8 T cells in DENV is carried out through the killing of infected cells and the production of proinflammatory cytokines, as CD4 T cells enhance B cell and CD8 T cell activities. A limited number of studies attempted to identify the involvement of T cells in CHIKV and ZIKV infection. The identification of human immunodominant ZIKV viral epitopes responsive to specific T cells is scarce, and none have been identified for CHIKV. In CHIKV infection, CD8 T cells are activated during the acute phase in the lymph nodes/blood, and CD4 T cells are activated during the chronic phase in the joints/muscles. Studies on the role of T cells in ZIKV-neuropathogenesis are limited and need to be explored. Many studies have shown the modulating actions of T cells due to cross-reactivity between DENV-ZIKV co-infections and have repeated heterologous/homologous DENV infection, which is an important factor to consider when developing an effective vaccine.
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Affiliation(s)
- Maheshi Mapalagamage
- Department of Zoology and Environment Sciences, Faculty of Science, University of Colombo, Colombo 00700, Sri Lanka;
- Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology (LJI), La Jolla, CA 92037, USA; (D.W.); (A.S.)
| | - Daniela Weiskopf
- Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology (LJI), La Jolla, CA 92037, USA; (D.W.); (A.S.)
| | - Alessandro Sette
- Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology (LJI), La Jolla, CA 92037, USA; (D.W.); (A.S.)
- Department of Medicine, Division of Infectious Diseases and Global Public Health, University of California San Diego (UCSD), La Jolla, CA 92037, USA
| | - Aruna Dharshan De Silva
- Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology (LJI), La Jolla, CA 92037, USA; (D.W.); (A.S.)
- Department of Paraclinical Sciences, Faculty of Medicine, General Sir John Kotelawala Defence University, Colombo 10390, Sri Lanka
- Correspondence:
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Astrocyte Control of Zika Infection Is Independent of Interferon Type I and Type III Expression. BIOLOGY 2022; 11:biology11010143. [PMID: 35053142 PMCID: PMC8772967 DOI: 10.3390/biology11010143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/15/2021] [Accepted: 12/16/2021] [Indexed: 12/23/2022]
Abstract
Simple Summary Zika virus (ZIKV) is a mosquito-borne virus first isolated from the Zika forest, Uganda, in 1947, which has been spreading across continents since then. We now know ZIKV causes both microencephaly in newborns and neurological complications in adults; however, no effective treatment options have yet been found. A more complete understanding of Zika-infection-mediated pathogenesis and host responses is required to enable the development of novel treatment strategies. In this study, efforts were made to elucidate the host responses following Zika virus infection using several astrocyte cell models, as astrocytes are a major cell type within the central nervous system (CNS) with significant antiviral ability. Our data suggest that astrocytes can resist ZIKV both in an interferon type I- and III-independent manner and suggest that an early and more diverse antiviral response may be more effective in controlling Zika infection. This study also identifies astrocyte cellular models that appear to display differential abilities in the control of viral infection, which may assist in the study of alternate neurotropic virus infections. Overall, this work adds to the growing body of knowledge surrounding ZIKV-mediated cellular host interactions and will contribute to a better understanding of ZIKV-mediated pathogenesis. Abstract Zika virus (ZIKV) is a pathogenic neurotropic virus that infects the central nervous system (CNS) and results in various neurological complications. Astrocytes are the dominant CNS cell producer of the antiviral cytokine IFN-β, however little is known about the factors involved in their ability to mediate viral infection control. Recent studies have displayed differential responses in astrocytes to ZIKV infection, and this study sought to elucidate astrocyte cell-specific responses to ZIKV using a variety of cell models infected with either the African (MR766) or Asian (PRVABC59) ZIKV strains. Expression levels of pro-inflammatory (TNF-α and IL-1β) and inflammatory (IL-8) cytokines following viral infection were low and mostly comparable within the ZIKV-resistant and ZIKV-susceptible astrocyte models, with better control of proinflammatory cytokines displayed in resistant astrocyte cells, synchronising with the viral infection level at specific timepoints. Astrocyte cell lines displaying ZIKV-resistance also demonstrated early upregulation of multiple antiviral genes compared with susceptible astrocytes. Interestingly, pre-stimulation of ZIKV-susceptible astrocytes with either poly(I:C) or poly(dA:dT) showed efficient protection against ZIKV compared with pre-stimulation with either recombinant IFN-β or IFN-λ, perhaps indicating that a more diverse antiviral gene expression is necessary for astrocyte control of ZIKV, and this is driven in part through interferon-independent mechanisms.
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Enlow W, Bordeleau M, Piret J, Ibáñez FG, Uyar O, Venable MC, Goyette N, Carbonneau J, Tremblay ME, Boivin G. Microglia are involved in phagocytosis and extracellular digestion during Zika virus encephalitis in young adult immunodeficient mice. J Neuroinflammation 2021; 18:178. [PMID: 34399779 PMCID: PMC8369691 DOI: 10.1186/s12974-021-02221-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 07/16/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Zika virus (ZIKV) has been associated with several neurological complications in adult patients. METHODS We used a mouse model deficient in TRIF and IPS-1 adaptor proteins, which are involved in type I interferon production, to study the role of microglia during brain infection by ZIKV. Young adult mice were infected intravenously with the contemporary ZIKV strain PRVABC59 (1 × 105 PFUs/100 µL). RESULTS Infected mice did not present overt clinical signs of the disease nor body weight loss compared with noninfected animals. However, mice exhibited a viremia and a brain viral load that were maximal (1.3 × 105 genome copies/mL and 9.8 × 107 genome copies/g of brain) on days 3 and 7 post-infection (p.i.), respectively. Immunohistochemistry analysis showed that ZIKV antigens were distributed in several regions of the brain, especially the dorsal hippocampus. The number of Iba1+/TMEM119+ microglia remained similar in infected versus noninfected mice, but their cell body and arborization areas significantly increased in the stratum radiatum and stratum lacunosum-moleculare layers of the dorsal hippocampus cornu ammoni (CA)1, indicating a reactive state. Ultrastructural analyses also revealed that microglia displayed increased phagocytic activities and extracellular digestion of degraded elements during infection. Mice pharmacologically depleted in microglia with PLX5622 presented a higher brain viral load compared to untreated group (2.8 × 1010 versus 8.5 × 108 genome copies/g of brain on day 10 p.i.) as well as an increased number of ZIKV antigens labeled with immunogold in the cytoplasm and endoplasmic reticulum of neurons and astrocytes indicating an enhanced viral replication. Furthermore, endosomes of astrocytes contained nanogold particles together with digested materials, suggesting a compensatory phagocytic activity upon microglial depletion. CONCLUSIONS These results indicate that microglia are involved in the control of ZIKV replication and/or its elimination in the brain. After depletion of microglia, the removal of ZIKV-infected cells by phagocytosis could be partly compensated by astrocytes.
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Affiliation(s)
- William Enlow
- Centre de Recherche en Infectiologie, Centre de Recherche du CHU de Québec-Université Laval, Quebec City, QC, Canada
| | - Maude Bordeleau
- Integrated Program in Neuroscience, McGill University, Montreal, QC, Canada.,Neurosciences Axis, Centre de recherche du CHU de Québec-Université Laval, Quebec City, QC, Canada
| | - Jocelyne Piret
- Centre de Recherche en Infectiologie, Centre de Recherche du CHU de Québec-Université Laval, Quebec City, QC, Canada
| | - Fernando González Ibáñez
- Neurosciences Axis, Centre de recherche du CHU de Québec-Université Laval, Quebec City, QC, Canada.,Department of Molecular Medicine, Université Laval, Quebec City, QC, Canada.,Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Olus Uyar
- Centre de Recherche en Infectiologie, Centre de Recherche du CHU de Québec-Université Laval, Quebec City, QC, Canada
| | - Marie-Christine Venable
- Centre de Recherche en Infectiologie, Centre de Recherche du CHU de Québec-Université Laval, Quebec City, QC, Canada
| | - Nathalie Goyette
- Centre de Recherche en Infectiologie, Centre de Recherche du CHU de Québec-Université Laval, Quebec City, QC, Canada
| | - Julie Carbonneau
- Centre de Recherche en Infectiologie, Centre de Recherche du CHU de Québec-Université Laval, Quebec City, QC, Canada
| | - Marie-Eve Tremblay
- Neurosciences Axis, Centre de recherche du CHU de Québec-Université Laval, Quebec City, QC, Canada. .,Department of Molecular Medicine, Université Laval, Quebec City, QC, Canada. .,Division of Medical Sciences, University of Victoria, Victoria, BC, Canada. .,Department of Neurology and Neurosurgery, McGill University, Montreal, QC, Canada. .,Department of Biochemistry and Molecular Biology, The University of British Columbia, Vancouver, BC, Canada.
| | - Guy Boivin
- Centre de Recherche en Infectiologie, Centre de Recherche du CHU de Québec-Université Laval, Quebec City, QC, Canada.
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10
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African-Lineage Zika Virus Replication Dynamics and Maternal-Fetal Interface Infection in Pregnant Rhesus Macaques. J Virol 2021; 95:e0222020. [PMID: 34076485 PMCID: PMC8312872 DOI: 10.1128/jvi.02220-20] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Following the Zika virus (ZIKV) outbreak in the Americas, ZIKV was causally associated with microcephaly and a range of neurological and developmental symptoms, termed congenital Zika syndrome (CZS). The viruses responsible for this outbreak belonged to the Asian lineage of ZIKV. However, in vitro and in vivo studies assessing the pathogenesis of African-lineage ZIKV demonstrated that African-lineage isolates often replicated to high titers and caused more-severe pathology than Asian-lineage isolates. To date, the pathogenesis of African-lineage ZIKV in a translational model, particularly during pregnancy, has not been rigorously characterized. Here, we infected four pregnant rhesus macaques with a low-passage-number strain of African-lineage ZIKV and compared its pathogenesis to those for a cohort of four pregnant rhesus macaques infected with an Asian-lineage isolate and a cohort of mock-inoculated controls. The viral replication kinetics for the two experimental groups were not significantly different, and both groups developed robust neutralizing antibody titers above levels considered to be protective. There was no evidence of significant fetal head growth restriction or gross fetal harm at delivery (1 to 1.5 weeks prior to full term) in either group. However, a significantly higher burden of ZIKV viral RNA (vRNA) was found in the maternal-fetal interface tissues of the macaques exposed to an African-lineage isolate. Our findings suggest that ZIKV of any genetic lineage poses a threat to pregnant individuals and their infants. IMPORTANCE ZIKV was first identified in 1947 in Africa, but most of our knowledge of ZIKV is based on studies of the distinct Asian genetic lineage, which caused the outbreak in the Americas in 2015 to 2016. In its most recent update, the WHO stated that improved understanding of African-lineage ZIKV pathogenesis during pregnancy must be a priority. The recent detection of African-lineage isolates in Brazil underscores the need to understand the impact of these viruses. Here, we provide the first comprehensive assessment of African-lineage ZIKV infection during pregnancy in a translational nonhuman primate model. We show that African-lineage isolates replicate with kinetics similar to those of Asian-lineage isolates and can infect the placenta. However, there was no evidence of more-severe outcomes with African-lineage isolates. Our results highlight both the threat that African-lineage ZIKV poses to pregnant individuals and their infants and the need for epidemiological and translational in vivo studies with African-lineage ZIKV.
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11
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Nakayama E, Kato F, Tajima S, Ogawa S, Yan K, Takahashi K, Sato Y, Suzuki T, Kawai Y, Inagaki T, Taniguchi S, Le TT, Tang B, Prow NA, Uda A, Maeki T, Lim CK, Khromykh AA, Suhrbier A, Saijo M. Neuroinvasiveness of the MR766 strain of Zika virus in IFNAR-/- mice maps to prM residues conserved amongst African genotype viruses. PLoS Pathog 2021; 17:e1009788. [PMID: 34310650 PMCID: PMC8341709 DOI: 10.1371/journal.ppat.1009788] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 08/05/2021] [Accepted: 07/07/2021] [Indexed: 12/23/2022] Open
Abstract
Zika virus (ZIKV) strains are classified into the African and Asian genotypes. The higher virulence of the African MR766 strain, which has been used extensively in ZIKV research, in adult IFNα/β receptor knockout (IFNAR-/-) mice is widely viewed as an artifact associated with mouse adaptation due to at least 146 passages in wild-type suckling mouse brains. To gain insights into the molecular determinants of MR766's virulence, a series of genes from MR766 were swapped with those from the Asian genotype PRVABC59 isolate, which is less virulent in IFNAR-/- mice. MR766 causes 100% lethal infection in IFNAR-/- mice, but when the prM gene of MR766 was replaced with that of PRVABC59, the chimera MR/PR(prM) showed 0% lethal infection. The reduced virulence was associated with reduced neuroinvasiveness, with MR766 brain titers ≈3 logs higher than those of MR/PR(prM) after subcutaneous infection, but was not significantly different in brain titers of MR766 and MR/PR(prM) after intracranial inoculation. MR/PR(prM) also showed reduced transcytosis when compared with MR766 in vitro. The high neuroinvasiveness of MR766 in IFNAR-/- mice could be linked to the 10 amino acids that differ between the prM proteins of MR766 and PRVABC59, with 5 of these changes affecting positive charge and hydrophobicity on the exposed surface of the prM protein. These 10 amino acids are highly conserved amongst African ZIKV isolates, irrespective of suckling mouse passage, arguing that the high virulence of MR766 in adult IFNAR-/- mice is not the result of mouse adaptation.
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Affiliation(s)
- Eri Nakayama
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Fumihiro Kato
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Shigeru Tajima
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Shinya Ogawa
- Department of Applied Biological Chemistry, School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kexin Yan
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Kenta Takahashi
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yuko Sato
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tadaki Suzuki
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yasuhiro Kawai
- Management Department of Biosafety and Laboratory Animal, Division of Biosafety Control and Research, National Institute of Infectious Diseases, Tokyo, Japan
| | - Takuya Inagaki
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Satoshi Taniguchi
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Thuy T. Le
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Bing Tang
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Natalie A. Prow
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
- Australian Infectious Disease Research Centre, GVN Center of Excellence, The University of Queensland and QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Akihiko Uda
- Department of Veterinary Science, National Institute of Infectious Diseases, Tokyo, Japan
| | - Takahiro Maeki
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Alexander A. Khromykh
- Australian Infectious Disease Research Centre, GVN Center of Excellence, The University of Queensland and QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Andreas Suhrbier
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
- Australian Infectious Disease Research Centre, GVN Center of Excellence, The University of Queensland and QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
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12
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Pardy RD, Valbon SF, Cordeiro B, Krawczyk CM, Richer MJ. An epidemic Zika virus isolate suppresses antiviral immunity by disrupting antigen presentation pathways. Nat Commun 2021; 12:4051. [PMID: 34193875 PMCID: PMC8245533 DOI: 10.1038/s41467-021-24340-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 06/14/2021] [Indexed: 12/20/2022] Open
Abstract
Zika virus (ZIKV) has emerged as an important global health threat, with the recently acquired capacity to cause severe neurological symptoms and to persist within host tissues. We previously demonstrated that an early Asian lineage ZIKV isolate induces a highly activated CD8 T cell response specific for an immunodominant epitope in the ZIKV envelope protein in wild-type mice. Here we show that a contemporary ZIKV isolate from the Brazilian outbreak severely limits CD8 T cell immunity in mice and blocks generation of the immunodominant CD8 T cell response. This is associated with a more sustained infection that is cleared between 7- and 14-days post-infection. Mechanistically, we demonstrate that infection with the Brazilian ZIKV isolate reduces the cross-presentation capacity of dendritic cells and fails to fully activate the immunoproteasome. Thus, our study provides an isolate-specific mechanism of host immune evasion by one Brazilian ZIKV isolate, which differs from the early Asian lineage isolate and provides potential insight into viral persistence associated with recent ZIKV outbreaks. The CD8 T cell response to Zika virus is known to be a critical component of the host immune response to infection. Here the authors show a Zika virus isolate specific disruption of antigen processing that impacts the host response and impairs viral clearance providing evidence of isolate specific impacts on the immune response to infection
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Affiliation(s)
- Ryan D Pardy
- Department of Microbiology & Immunology, McGill University, Montreal, QC, Canada.,Rosalind & Morris Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada
| | - Stefanie F Valbon
- Department of Microbiology & Immunology, McGill University, Montreal, QC, Canada.,Rosalind & Morris Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada
| | - Brendan Cordeiro
- Department of Microbiology & Immunology, McGill University, Montreal, QC, Canada
| | - Connie M Krawczyk
- Department of Metabolism and Nutritional Programming, Van Andel Research Institute, Grand Rapids, MI, USA
| | - Martin J Richer
- Department of Microbiology & Immunology, McGill University, Montreal, QC, Canada. .,Rosalind & Morris Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada. .,Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, USA.
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13
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Hung SJ, Huang SW. Contributions of Genetic Evolution to Zika Virus Emergence. Front Microbiol 2021; 12:655065. [PMID: 34025610 PMCID: PMC8137341 DOI: 10.3389/fmicb.2021.655065] [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] [Received: 01/18/2021] [Accepted: 04/12/2021] [Indexed: 12/15/2022] Open
Abstract
Mosquito-borne Zika virus (ZIKV) was considered an obscure virus causing only mild or self-limited symptoms until the explosive outbreaks in French Polynesia in 2013–2014 and in the Americas in 2015–2016, resulting in more than 700,000 cases of the disease, with occasional miscarriage and severe congenital birth defects, such as intrauterine growth restriction, fetal microcephaly, and other neurodevelopmental malformations. In this review, we summarized the evolution of ZIKV from a mundane virus to an epidemic virus. ZIKV has acquired a panel of amino acid substitutions during evolution when the virus spread from Africa, Asia, Pacific, through to the Americas. Robust occurrence of mutations in the evolution of ZIKV has increased its epidemic potential. Here we discussed the contributions of these evolutionary mutations to the enhancement of viral pathogenicity and host-mosquito transmission. We further explored the potential hypotheses for the increase in ZIKV activity in recent decades. Through this review, we also explored the hypotheses for the occurrence of the recent ZIKV epidemics and highlighted the potential roles of various factors including pathogen-, host-, vector-related, and environmental factors, which may have synergistically contributed to the ZIKV epidemics.
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Affiliation(s)
- Su-Jhen Hung
- National Mosquito-Borne Diseases Control Research Center, National Health Research Institutes, Tainan, Taiwan
| | - Sheng-Wen Huang
- National Mosquito-Borne Diseases Control Research Center, National Health Research Institutes, Tainan, Taiwan
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14
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Dowall SD, Graham VA, Aram M, Findlay-Wilson S, Salguero FJ, Emery K, Hewson R. Hantavirus infection in type I interferon receptor-deficient (A129) mice. J Gen Virol 2021; 101:1047-1055. [PMID: 32667279 PMCID: PMC7660455 DOI: 10.1099/jgv.0.001470] [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: 11/18/2022] Open
Abstract
Type I interferon receptor knockout mice (strain A129) were assessed as a disease model of hantavirus infection. A range of infection routes (intramuscular, intraperitoneal and intranasal) were assessed using minimally passaged Seoul virus (strain Humber). Dissemination of virus to the spleen, kidney and lung was observed at 5 days after intramuscular and intraperitoneal challenge, which was resolved by day 14. In contrast, intranasal challenge of A129 mice demonstrated virus tropism to the lung, which was maintained to day 14 post-challenge. These data support the use of the A129 mouse model for future infection studies and the in vivo evaluation of interventions.
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Affiliation(s)
- Stuart D Dowall
- National Infection Service, Public Health England, Porton Down, Salisbury, Wiltshire SP4 0JG, UK
| | - Victoria A Graham
- National Infection Service, Public Health England, Porton Down, Salisbury, Wiltshire SP4 0JG, UK
| | - Marilyn Aram
- National Infection Service, Public Health England, Porton Down, Salisbury, Wiltshire SP4 0JG, UK
| | - Stephen Findlay-Wilson
- National Infection Service, Public Health England, Porton Down, Salisbury, Wiltshire SP4 0JG, UK
| | - Francisco J Salguero
- National Infection Service, Public Health England, Porton Down, Salisbury, Wiltshire SP4 0JG, UK
| | - Kirsty Emery
- National Infection Service, Public Health England, Porton Down, Salisbury, Wiltshire SP4 0JG, UK
| | - Roger Hewson
- National Infection Service, Public Health England, Porton Down, Salisbury, Wiltshire SP4 0JG, UK
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15
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Mwaliko C, Nyaruaba R, Zhao L, Atoni E, Karungu S, Mwau M, Lavillette D, Xia H, Yuan Z. Zika virus pathogenesis and current therapeutic advances. Pathog Glob Health 2021; 115:21-39. [PMID: 33191867 PMCID: PMC7850325 DOI: 10.1080/20477724.2020.1845005] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Zika virus (ZIKV) is an emerging arthropod-borne flavivirus that, upon infection, results in teratogenic effects and neurological disorders. ZIKV infections pose serious global public health concerns, prompting scientists to increase research on antivirals and vaccines against the virus. These efforts are still ongoing as the pathogenesis and immune evasion mechanisms of ZIKV have not yet been fully elaborated. Currently, no specific vaccines or drugs have been approved for ZIKV; however, some are undergoing clinical trials. Notably, several strategies have been used to develop antivirals, including drugs that target viral and host proteins. Additionally, drug repurposing is preferred since it is less costly and takes less time than other strategies because the drugs used have already been approved for human use. Likewise, different platforms have been evaluated for the design of vaccines, including DNA, mRNA, peptide, protein, viral vectors, virus-like particles (VLPSs), inactivated-virus, and live-attenuated virus vaccines. These vaccines have been shown to induce specific humoral and cellular immune responses and reduce viremia and viral RNA both in vitro and in vivo. Importantly, most of these vaccines have entered clinical trials. Understanding the viral disease mechanism will provide better strategies for developing therapeutic agents against ZIKV. This review provides a comprehensive summary of the viral pathogenesis of ZIKV and current advancements in the development of vaccines and drugs against this virus.
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Affiliation(s)
- Caroline Mwaliko
- Key Laboratory of Special Pathogens and Biosafety, Center for Biosafety Mega-Science, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China,International College, University of Chinese Academy of Sciences, Beijing, China,Microbiology, Sino-Africa Joint Research Center, Nairobi, Kenya
| | - Raphael Nyaruaba
- Key Laboratory of Special Pathogens and Biosafety, Center for Biosafety Mega-Science, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China,International College, University of Chinese Academy of Sciences, Beijing, China,Microbiology, Sino-Africa Joint Research Center, Nairobi, Kenya
| | - Lu Zhao
- Key Laboratory of Special Pathogens and Biosafety, Center for Biosafety Mega-Science, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China,International College, University of Chinese Academy of Sciences, Beijing, China
| | - Evans Atoni
- Key Laboratory of Special Pathogens and Biosafety, Center for Biosafety Mega-Science, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China,International College, University of Chinese Academy of Sciences, Beijing, China,Microbiology, Sino-Africa Joint Research Center, Nairobi, Kenya
| | - Samuel Karungu
- Key Laboratory of Special Pathogens and Biosafety, Center for Biosafety Mega-Science, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China,International College, University of Chinese Academy of Sciences, Beijing, China,Microbiology, Sino-Africa Joint Research Center, Nairobi, Kenya
| | - Matilu Mwau
- Center for Infectious and Parasitic Diseases Control Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Dimitri Lavillette
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Han Xia
- Key Laboratory of Special Pathogens and Biosafety, Center for Biosafety Mega-Science, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China,CONTACT Han Xia ; Zhiming Yuan Key Laboratory of Special Pathogens and Biosafety, Center for Biosafety Mega-Science, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Zhiming Yuan
- Key Laboratory of Special Pathogens and Biosafety, Center for Biosafety Mega-Science, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
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16
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Zika Virus-Like Particles Bearing a Covalent Dimer of Envelope Protein Protect Mice from Lethal Challenge. J Virol 2020; 95:JVI.01415-20. [PMID: 33028720 PMCID: PMC7737734 DOI: 10.1128/jvi.01415-20] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/03/2020] [Indexed: 12/17/2022] Open
Abstract
Zika virus (ZIKV) envelope (E) protein is the major target of neutralizing antibodies in infected hosts and thus represents a candidate of interest for vaccine design. However, a major concern in the development of vaccines against ZIKV and the related dengue virus is the induction of cross-reactive poorly neutralizing antibodies that can cause antibody-dependent enhancement (ADE) of infection. This risk necessitates particular care in vaccine design. Specifically, the engineered immunogens should have their cross-reactive epitopes masked, and they should be optimized for eliciting virus-specific strongly neutralizing antibodies upon vaccination. Here, we developed ZIKV subunit- and virus-like particle (VLP)-based vaccines displaying E in its wild-type form or E locked in a covalently linked dimeric (cvD) conformation to enhance the exposure of E dimers to the immune system. Compared with their wild-type derivatives, cvD immunogens elicited antibodies with a higher capacity to neutralize virus infection in cultured cells. More importantly, these immunogens protected animals from lethal challenge with both the African and Asian lineages of ZIKV, impairing virus dissemination to brain and sexual organs. Moreover, the locked conformation of E reduced the exposure of epitopes recognized by cross-reactive antibodies and therefore showed a lower potential to induce ADE in vitro Our data demonstrated a higher efficacy of the VLPs in comparison with that of the soluble dimer and support VLP-cvD as a promising ZIKV vaccine.IMPORTANCE Infection with Zika virus (ZIKV) leads to the production by the host of antibodies that target the viral surface envelope (E) protein. A subset of these antibodies can inhibit virus infection, thus making E a suitable candidate for the development of vaccine against the virus. However, the anti-ZIKV E antibodies can cross-react with the E protein of the related dengue virus on account of the high level of similarity exhibited by the two viral proteins. Such a scenario may lead to severe dengue disease. Therefore, the design of a ZIKV vaccine requires particular care. Here, we tested two candidate vaccines containing a recombinant form of the ZIKV E protein that is forced in a covalently stable dimeric conformation (cvD). They were generated with an explicit aim to reduce the exposure of the cross-reactive epitopes. One vaccine is composed of a soluble form of the E protein (sE-cvD), the other is a more complex virus-like particle (VLP-cvD). We used the two candidate vaccines to immunize mice and later infected them with ZIKV. The animals produced a high level of inhibitory antibodies and were protected from the infection. The VLP-cvD was the most effective, and we believe it represents a promising ZIKV vaccine candidate.
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17
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Nunes BTD, Fontes-Garfias CR, Shan C, Muruato AE, Nunes JGC, Burbano RMR, Vasconcelos PFC, Shi PY, Medeiros DBA. Zika structural genes determine the virulence of African and Asian lineages. Emerg Microbes Infect 2020; 9:1023-1033. [PMID: 32419649 PMCID: PMC8284969 DOI: 10.1080/22221751.2020.1753583] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The Asian lineage of Zika virus (ZIKV) is responsible for the recent epidemics in the Americas and severe disease, whereas the African lineage of ZIKV has not been reported to cause epidemics or severe disease. We constructed a cDNA infectious clone (IC) of an African ZIKV strain, which, together with our previously developed Asian ZIKV strain IC, allowed us to engineer chimeric viruses by swapping the structural and non-structural genes between the two lineages. Recombinant parental and chimeric viruses were analyzed in A129 and newborn CD1 mouse models. In the A129 mice, the African strain developed higher viremia, organ viral loading, and mortality rate. In CD1 mice, the African strain exhibited a higher neurovirulence than the Asian strain. A chimeric virus containing the structural genes from the African strain is more virulent than the Asian strain, whereas a chimeric virus containing the non-structural genes from the African strain exhibited a virulence comparable to the Asian strain. These results suggest that (i) African strain is more virulent than Asian strain and (ii) viral structural genes primarily determine the virulence difference between the two lineages in mouse models. Other factors may contribute to the discrepancy between the mouse and epidemic results.
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Affiliation(s)
- Bruno T D Nunes
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ministry of Health, Ananindeua, Brazil.,Department of Biochemistry & Molecular Biology, Galveston, TX, USA.,Health Sciences Institute, Belem, Brazil
| | | | - Chao Shan
- Department of Biochemistry & Molecular Biology, Galveston, TX, USA
| | - Antonio E Muruato
- Department of Biochemistry & Molecular Biology, Galveston, TX, USA.,Department of Microbiology & Immunology, Galveston, TX, USA
| | - Jannyce G C Nunes
- Department of Biochemistry & Molecular Biology, Galveston, TX, USA.,Health Sciences Institute, Belem, Brazil
| | - Rommel M R Burbano
- Health Sciences Institute, Belem, Brazil.,Biological Sciences Institute - ICS, Federal University of Pará, Belem, Brazil
| | - Pedro F C Vasconcelos
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ministry of Health, Ananindeua, Brazil.,Department of Pathology, Pará State University Belém, Brazil
| | - Pei-Yong Shi
- Department of Biochemistry & Molecular Biology, Galveston, TX, USA.,Institute for Human Infections & Immunity, Galveston, TX, USA.,Institute for Translational Science, Galveston, TX, USA.,Sealy Institute of Vaccine Sciences, Galveston, TX, USA.,Sealy Center for Structural Biology & Molecular Biophysics, Texas Medical Branch, Galveston, TX, USA
| | - Daniele B A Medeiros
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ministry of Health, Ananindeua, Brazil.,Department of Biochemistry & Molecular Biology, Galveston, TX, USA.,Post Graduation Program in Virology, Evandro Chagas Institute Ministry of Health, Ananindeua, Brazil.,Health Sciences Institute, Belem, Brazil
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18
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Gobillot TA, Humes D, Sharma A, Kikawa C, Overbaugh J. The Robust Restriction of Zika Virus by Type-I Interferon in A549 Cells Varies by Viral Lineage and Is Not Determined by IFITM3. Viruses 2020; 12:v12050503. [PMID: 32370187 PMCID: PMC7290589 DOI: 10.3390/v12050503] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 04/29/2020] [Accepted: 04/30/2020] [Indexed: 12/18/2022] Open
Abstract
Type-I interferon (IFN-I) is a major antiviral host response but its impact on Zika virus (ZIKV) replication is not well defined, particularly as it relates to different circulating strains. Interferon stimulated genes (ISGs) that inhibit ZIKV, such as IFITM3, have been identified largely using overexpression studies. Here, we tested whether diverse ZIKV strains differed in their susceptibility to IFN-I-mediated restriction and the contribution of IFITM3 to this restriction. We identified a robust IFN-I-mediated antiviral effect on ZIKV replication (>100-fold reduction) in A549 cells, a commonly used cell line to study ZIKV replication. The extent of inhibition depended on the IFN-I type and the virus strain tested. Viruses from the American pathogenic outbreak were more sensitive to IFNα (p = 0.049) and IFNβ (p = 0.09) than African-lineage strains, which have not been linked to severe pathogenesis. Knocking out IFITM3 expression did not dampen the IFN-I antiviral effect and only high overexpression of IFITM3 led to ZIKV inhibition. Moreover, IFITM3 expression levels in different cells were not associated with IFN-mediated ZIKV inhibition. Taken together, our findings indicate that there is a robust IFN-I-mediated antiviral effect on ZIKV infection, particularly for American viruses, that is not due to IFITM3. A549 cells, which are a commonly used cell line to study ZIKV replication, present an opportunity for the discovery of novel antiviral ISGs against ZIKV.
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Affiliation(s)
- Theodore A. Gobillot
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; (T.A.G.); (D.H.); (A.S.); (C.K.)
- Medical Scientist Training Program, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Daryl Humes
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; (T.A.G.); (D.H.); (A.S.); (C.K.)
| | - Amit Sharma
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; (T.A.G.); (D.H.); (A.S.); (C.K.)
| | - Caroline Kikawa
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; (T.A.G.); (D.H.); (A.S.); (C.K.)
| | - Julie Overbaugh
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; (T.A.G.); (D.H.); (A.S.); (C.K.)
- Correspondence:
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19
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Rodriguez-Morales AJ, Rodriguez-Morales AG, Méndez CA, Hernández-Botero S. Tracing New Clinical Manifestations in Patients with COVID-19 in Chile and Its Potential Relationship with the SARS-CoV-2 Divergence. CURRENT TROPICAL MEDICINE REPORTS 2020; 7:75-78. [PMID: 32313804 PMCID: PMC7165999 DOI: 10.1007/s40475-020-00205-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Purpose of Review In this review, we discuss the current implications of the changing genomic epidemiology of the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), etiological agent of the Coronavirus Disease 2019 (COVID-19) and its potential relationship with the change of clinical manifestations in patients with confirmed infection. Recent Findings Over the course of the current pandemic, the virus has been found more diverse in new countries. Simultaneously, also new clinical manifestations are observed, particularly more prominent gastrointestinal and neurological findings. Summary SARS-CoV-2/COVID-19 is changing not only its epidemiology, but also its genomic diversity and clinical manifestations, both aspects coupled, needs to be considered in the study of this ongoing pandemic.
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Affiliation(s)
- Alfonso J. Rodriguez-Morales
- Public Health and Infection Research Group, Faculty of Health Sciences, Universidad Tecnológica de Pereira, Pereira, Risaralda Colombia
- Grupo de Investigación Biomedicina, Faculty of Medicine, Fundación Universitaria Autónoma de las Américas, Pereira, Colombia
| | | | - Claudio A. Méndez
- Instituto de Salud Pública, Facultad de Medicina, Universidad Austral de Chile, Valdivia, Chile
| | - Sebastián Hernández-Botero
- Grupo de Resistencia Antibiótica de Manizales (GRAM), Universidad de Manizales, Manizales, Caldas Colombia
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20
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Zika Virus-Induction of the Suppressor of Cytokine Signaling 1/3 Contributes to the Modulation of Viral Replication. Pathogens 2020; 9:pathogens9030163. [PMID: 32120897 PMCID: PMC7157194 DOI: 10.3390/pathogens9030163] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 12/15/2022] Open
Abstract
Zika virus (ZIKV) is a mosquito-borne flavivirus that has emerged and caused global outbreaks since 2007. Although ZIKV proteins have been shown to suppress early anti-viral innate immune responses, little is known about the exact mechanisms. This study demonstrates that infection with either the African or Asian lineage of ZIKV leads to a modulated expression of suppressor of cytokine signaling (SOCS) genes encoding SOCS1 and SOCS3 in the following cell models: A549 human lung adenocarcinoma cells; JAr human choriocarcinoma cells; human neural progenitor cells. Studies of viral gene expression in response to SOCS1 or SOCS3 demonstrated that the knockdown of these SOCS proteins inhibited viral NS5 or ZIKV RNA expression, whereas overexpression resulted in an increased expression. Moreover, the overexpression of SOCS1 or SOCS3 inhibited the retinoic acid-inducible gene-I-like receptor-mediated activation of both type I and III interferon pathways. These results imply that SOCS upregulation following ZIKV infection modulates viral replication, possibly via the regulation of anti-viral innate immune responses.
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21
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Le Tortorec A, Matusali G, Mahé D, Aubry F, Mazaud-Guittot S, Houzet L, Dejucq-Rainsford N. From Ancient to Emerging Infections: The Odyssey of Viruses in the Male Genital Tract. Physiol Rev 2020; 100:1349-1414. [PMID: 32031468 DOI: 10.1152/physrev.00021.2019] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The male genital tract (MGT) is the target of a number of viral infections that can have deleterious consequences at the individual, offspring, and population levels. These consequences include infertility, cancers of male organs, transmission to the embryo/fetal development abnormalities, and sexual dissemination of major viral pathogens such as human immunodeficiency virus (HIV) and hepatitis B virus. Lately, two emerging viruses, Zika and Ebola, have additionally revealed that the human MGT can constitute a reservoir for viruses cleared from peripheral circulation by the immune system, leading to their sexual transmission by cured men. This represents a concern for future epidemics and further underlines the need for a better understanding of the interplay between viruses and the MGT. We review here how viruses, from ancient viruses that integrated the germline during evolution through old viruses (e.g., papillomaviruses originating from Neanderthals) and more modern sexually transmitted infections (e.g., simian zoonotic HIV) to emerging viruses (e.g., Ebola and Zika) take advantage of genital tract colonization for horizontal dissemination, viral persistence, vertical transmission, and endogenization. The MGT immune responses to viruses and the impact of these infections are discussed. We summarize the latest data regarding the sources of viruses in semen and the complex role of this body fluid in sexual transmission. Finally, we introduce key animal findings that are relevant for our understanding of viral infection and persistence in the human MGT and suggest future research directions.
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Affiliation(s)
- Anna Le Tortorec
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Giulia Matusali
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Dominique Mahé
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Florence Aubry
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Séverine Mazaud-Guittot
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Laurent Houzet
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Nathalie Dejucq-Rainsford
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
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22
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Genetic Diversity of Collaborative Cross Mice Controls Viral Replication, Clinical Severity, and Brain Pathology Induced by Zika Virus Infection, Independently of Oas1b. J Virol 2020; 94:JVI.01034-19. [PMID: 31694939 DOI: 10.1128/jvi.01034-19] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 11/03/2019] [Indexed: 12/11/2022] Open
Abstract
The explosive spread of Zika virus (ZIKV) has been associated with major variations in severe disease and congenital afflictions among infected populations, suggesting an influence of host genes. We investigated how genome-wide variants could impact susceptibility to ZIKV infection in mice. We first describe that the susceptibility of Ifnar1-knockout mice is largely influenced by their genetic background. We then show that Collaborative Cross (CC) mice, which exhibit a broad genetic diversity, in which the type I interferon receptor (IFNAR) was blocked by an anti-IFNAR antibody expressed phenotypes ranging from complete resistance to severe symptoms and death, with large variations in the peak and the rate of decrease in the plasma viral load, in the brain viral load, in brain histopathology, and in the viral replication rate in infected cells. The differences in susceptibility to ZIKV between CC strains correlated with the differences in susceptibility to dengue and West Nile viruses between the strains. We identified highly susceptible and resistant mouse strains as new models to investigate the mechanisms of human ZIKV disease and other flavivirus infections. Genetic analyses revealed that phenotypic variations are driven by multiple genes with small effects, reflecting the complexity of ZIKV disease susceptibility in the human population. Notably, our results rule out the possibility of a role of the Oas1b gene in the susceptibility to ZIKV. Altogether, the findings of this study emphasize the role of host genes in the pathogeny of ZIKV infection and lay the foundation for further genetic and mechanistic studies.IMPORTANCE In recent outbreaks, ZIKV has infected millions of people and induced rare but potentially severe complications, including Guillain-Barré syndrome and encephalitis in adults. While several viral sequence variants were proposed to enhance the pathogenicity of ZIKV, the influence of host genetic variants in mediating the clinical heterogeneity remains mostly unexplored. We addressed this question using a mouse panel which models the genetic diversity of the human population and a ZIKV strain from a recent clinical isolate. Through a combination of in vitro and in vivo approaches, we demonstrate that multiple host genetic variants determine viral replication in infected cells and the clinical severity, the kinetics of blood viral load, and brain pathology in mice. We describe new mouse models expressing high degrees of susceptibility or resistance to ZIKV and to other flaviviruses. These models will facilitate the identification and mechanistic characterization of host genes that influence ZIKV pathogenesis.
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23
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Ávila-Pérez G, Nogales A, Park JG, Márquez-Jurado S, Iborra FJ, Almazan F, Martínez-Sobrido L. A natural polymorphism in Zika virus NS2A protein responsible of virulence in mice. Sci Rep 2019; 9:19968. [PMID: 31882898 PMCID: PMC6934710 DOI: 10.1038/s41598-019-56291-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 12/05/2019] [Indexed: 12/12/2022] Open
Abstract
Zika virus (ZIKV) infection is currently one of the major concerns in human public health due to its association with neurological disorders. Intensive effort has been implemented for the treatment of ZIKV, however there are not currently approved vaccines or antivirals available to combat ZIKV infection. In this sense, the identification of virulence factors associated with changes in ZIKV virulence could help to develop safe and effective countermeasures to treat ZIKV or to prevent future outbreaks. Here, we have compared the virulence of two related ZIKV strains from the recent outbreak in Brazil (2015), Rio Grande do Norte Natal (RGN) and Paraiba. In spite of both viruses being identified in the same period of time and region, significant differences in virulence and replication were observed using a validated mouse model of ZIKV infection. While ZIKV-RGN has a 50% mouse lethal dose (MLD50) of ~105 focus forming units (FFUs), ZIKV-Paraiba infection resulted in 100% of lethality with less than 10 FFUs. Combining deep-sequencing analysis and our previously described infectious ZIKV-RGN cDNA clone, we identified a natural polymorphism in the non-structural protein 2 A (NS2A) that increase the virulence of ZIKV. Moreover, results demonstrate that the single amino acid alanine to valine substitution at position 117 (A117V) in the NS2A was sufficient to convert the attenuated rZIKV-RGN in a virulent Paraiba-like virus (MLD50 < 10 FFU). The mechanism of action was also evaluated and data indicate that substitution A117V in ZIKV NS2A protein reduces host innate immune responses and viral-induced apoptosis in vitro. Therefore, amino acid substitution A117V in ZIKV NS2A could be used as a genetic risk-assessment marker for future ZIKV outbreaks.
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Affiliation(s)
- Gines Ávila-Pérez
- Department of Microbiology and Immunology, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, New York, 14642, USA
| | - Aitor Nogales
- Department of Microbiology and Immunology, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, New York, 14642, USA
- Center for Animal Health Research, INIA-CISA, 28130, Valdeolmos, Madrid, Spain
| | - Jun-Gyu Park
- Department of Microbiology and Immunology, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, New York, 14642, USA
| | - Silvia Márquez-Jurado
- Department of Molecular and Cell Biology, Centro Nacional de Biotecnología (CNB-CSIC), Universidad Autonóma de Madrid, 3 Darwin Street, 28049, Madrid, Spain
| | - Francisco J Iborra
- Department of Molecular and Cell Biology, Centro Nacional de Biotecnología (CNB-CSIC), Universidad Autonóma de Madrid, 3 Darwin Street, 28049, Madrid, Spain
| | - Fernando Almazan
- Department of Molecular and Cell Biology, Centro Nacional de Biotecnología (CNB-CSIC), Universidad Autonóma de Madrid, 3 Darwin Street, 28049, Madrid, Spain.
| | - Luis Martínez-Sobrido
- Department of Microbiology and Immunology, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, New York, 14642, USA.
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24
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Udenze D, Trus I, Berube N, Gerdts V, Karniychuk U. The African strain of Zika virus causes more severe in utero infection than Asian strain in a porcine fetal transmission model. Emerg Microbes Infect 2019; 8:1098-1107. [PMID: 31340725 PMCID: PMC6711198 DOI: 10.1080/22221751.2019.1644967] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Studies in mice showed that African Zika virus (ZIKV) strains cause more damage in embryos. These studies, however, were limited to the mouse-adapted African MR766 strain or infection at early gestation. Here, we compared infection of Asian and African strains in the fetal pig model at midgestation. Both strains caused fetal infection. ZIKV was detected in placenta, amniotic membrane, amniotic fluid, fetal blood, and brain. The African strain produced more vigorous in utero infection as represented by more efficient virus transmission between siblings, and higher viral loads in fetal organs and membranes. Infection with both strains was associated with reduced fetal brain weight and increased number of placental CD163-positive cells, as well as elevated in utero interferon alpha and cortisol levels. This is the first large animal model study which demonstrated that African strain of ZIKV, with no passage history in experimental animals, can cause persistent infection in fetuses and fetal membranes at midgestation. Our studies also suggest that similar to Asian strains, ZIKV of African lineage might cause silent pathology which is difficult to identify in deceptively healthy fetuses. The findings emphasize the need for further studies to highlight the impact of ZIKV heterogeneity on infection outcomes during pregnancy.
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Affiliation(s)
- Daniel Udenze
- a Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan , Saskatoon , Canada.,b School of Public Health, University of Saskatchewan , Saskatoon , Canada
| | - Ivan Trus
- a Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan , Saskatoon , Canada
| | - Nathalie Berube
- a Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan , Saskatoon , Canada
| | - Volker Gerdts
- a Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan , Saskatoon , Canada.,c Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan , Saskatoon , Canada
| | - Uladzimir Karniychuk
- a Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan , Saskatoon , Canada.,b School of Public Health, University of Saskatchewan , Saskatoon , Canada.,c Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan , Saskatoon , Canada
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25
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Sutarjono B. Can We Better Understand How Zika Leads to Microcephaly? A Systematic Review of the Effects of the Zika Virus on Human Brain Organoids. J Infect Dis 2019; 219:734-745. [PMID: 30256965 DOI: 10.1093/infdis/jiy572] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Accepted: 09/22/2018] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND The innovative human brain organoid model represents a unique opportunity to better understand the genesis of congenital brain abnormalities, particularly microcephaly, caused by Zika virus (ZIKV) infection during early pregnancy. METHODS A systematic review was conducted to investigate how ZIKV leads to microcephaly in a novel experimental model that mimics early brain development. Studies were gathered by searching MEDLINE/Pubmed, LILACS, and LiSSa for reports on effects of ZIKV infection on human brain organoids. From 146 identified papers, 13 articles were selected for review. RESULTS This review found that ZIKV of African, Latin American, and Asian lineages caused productive replication after 72 hours, preferentially infected neural progenitor cells over mature neurons, reduced both cell populations, and caused premature differentiation. Limited data involving only African and Latin American lineages showed a reduction in populations of proliferating cells and intermediate cells, and overall decreased viability. Furthermore, all 3 lineages caused heightened apoptosis and reduced organoid size. CONCLUSIONS This review concludes that, in organoids, ZIKV causes productive replication, infects neural progenitor cells over mature neurons, decreases both populations, causes premature differentiation, induces apoptosis, and reduces size.
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Affiliation(s)
- Bayu Sutarjono
- Saba University School of Medicine, Devens, Massachusetts
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26
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Mattiuzzo G, Knezevic I, Hassall M, Ashall J, Myhill S, Faulkner V, Hockley J, Rigsby P, Wilkinson DE, Page M. Harmonization of Zika neutralization assays by using the WHO International Standard for anti-Zika virus antibody. NPJ Vaccines 2019; 4:42. [PMID: 31632743 PMCID: PMC6791859 DOI: 10.1038/s41541-019-0135-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 09/02/2019] [Indexed: 01/06/2023] Open
Abstract
During outbreaks of emerging viruses, such as the Zika outbreak in 2015-2016, speed and accuracy in detection of infection are critical factors to control the spread of the disease; often serological and diagnostic methods for emerging viruses are not well developed and validated. Thus, vaccines and treatments are difficult to evaluate due to the lack of comparable methods. In this study, we show how the 1st WHO International Standard for anti-Zika antibody was able to harmonize the neutralization titres of a panel of serological Zika-positive samples from laboratories worldwide. Expression of the titres in International Unit per millilitre reduced the inter-laboratory variance, allowing for greater comparability between laboratories. We advocate the use of the International Standard for anti-Zika virus antibodies for the calibration of neutralization assays to create a common language, which will permit a clear evaluation of the results of different clinical trials and expedite the vaccine/treatment development.
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Affiliation(s)
- Giada Mattiuzzo
- Division of Virology, National Institute for Biological Standards and Control (NIBSC), Blanche Lane, South Mimms, Potters Bar, Hertfordshire, EN6 3QG UK
| | - Ivana Knezevic
- Department of Essential Medicines and Health Products, World Health Organization, Avenue Appia 20, 1211 Geneva, Switzerland
| | - Mark Hassall
- Division of Virology, National Institute for Biological Standards and Control (NIBSC), Blanche Lane, South Mimms, Potters Bar, Hertfordshire, EN6 3QG UK
| | - James Ashall
- Division of Virology, National Institute for Biological Standards and Control (NIBSC), Blanche Lane, South Mimms, Potters Bar, Hertfordshire, EN6 3QG UK
| | - Sophie Myhill
- Division of Virology, National Institute for Biological Standards and Control (NIBSC), Blanche Lane, South Mimms, Potters Bar, Hertfordshire, EN6 3QG UK
| | - Valwynne Faulkner
- Division of Virology, National Institute for Biological Standards and Control (NIBSC), Blanche Lane, South Mimms, Potters Bar, Hertfordshire, EN6 3QG UK
| | - Jason Hockley
- Department of Biostatistics, National Institute for Biological Standards and Control (NIBSC), Blanche Lane, South Mimms, Potters Bar, Hertfordshire, EN6 3QG UK
| | - Peter Rigsby
- Department of Biostatistics, National Institute for Biological Standards and Control (NIBSC), Blanche Lane, South Mimms, Potters Bar, Hertfordshire, EN6 3QG UK
| | - Dianna E. Wilkinson
- Division of Virology, National Institute for Biological Standards and Control (NIBSC), Blanche Lane, South Mimms, Potters Bar, Hertfordshire, EN6 3QG UK
| | - Mark Page
- Division of Virology, National Institute for Biological Standards and Control (NIBSC), Blanche Lane, South Mimms, Potters Bar, Hertfordshire, EN6 3QG UK
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27
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Ferraris P, Yssel H, Missé D. Zika virus infection: an update. Microbes Infect 2019; 21:353-360. [DOI: 10.1016/j.micinf.2019.04.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 04/11/2019] [Accepted: 04/11/2019] [Indexed: 02/07/2023]
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28
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Lineage-dependent differences of Zika virus infection in a susceptible mouse model are associated with different profiles of cytokines, chemokines, growth factors and acute phase proteins. Cytokine 2019; 125:154864. [PMID: 31577989 DOI: 10.1016/j.cyto.2019.154864] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 09/23/2019] [Accepted: 09/25/2019] [Indexed: 12/28/2022]
Abstract
Zika virus (ZIKV) is phylogenetically divided into two lineages comprising African (ZIKVAF) and Asian (ZIKVAS) genotypes. In the type-I interferon receptor deficient mouse model, ZIKVAF causes severe disease with all mice meeting humane endpoints with doses as low as 10 plaque-forming units (pfu) whereas a much milder infection is seen after challenge with ZIKVAS, including with doses as high as 106 pfu. Using this mouse model, the elucidation of cytokine, chemokine, growth factor and acute phase protein responses over the course of infection were studied to determine whether these analytes contributed to the stark difference in clinical outcome. Results demonstrated some significant differences, with the ZIKVAF infection being associated with increases in a higher number of biomarkers than ZIKVAS. When low (10 pfu) and high (106 pfu) challenge doses were compared, animals given the lower virus inoculum showed a wider range of responses, indicating a different disease progression compared to those challenged with high doses. These results aid with elucidating the different outcomes with the two lineages of ZIKV and with future work to assess pathogenicity of virus infection.
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29
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Leda AR, Bertrand L, Andras IE, El-Hage N, Nair M, Toborek M. Selective Disruption of the Blood-Brain Barrier by Zika Virus. Front Microbiol 2019; 10:2158. [PMID: 31620112 PMCID: PMC6759472 DOI: 10.3389/fmicb.2019.02158] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 09/02/2019] [Indexed: 12/12/2022] Open
Abstract
The blood–brain barrier (BBB) selectively regulates the cellular exchange of macromolecules between the circulation and the central nervous system (CNS). Here, we hypothesize that Zika virus (ZIKV) infects the brain via a disrupted BBB and altered expression of tight junction (TJ) proteins, which are structural components of the BBB. To assess this hypothesis, in vitro and in vivo studies were performed using three different strains of ZIKV: Honduras (ZIKV-H), Puerto Rico (ZIKV-PR), and Uganda (ZIKV-U). Primary human brain microvascular endothelial cells (BMECs) were productively infected by all studied ZIKV strains at MOI 0.01, and were analyzed by plaque assay, immunofluorescence for NS1 protein, and qRT-PCR at 2 and 6 days post-infection (dpi). Compared to mock-infected controls, expression level of ZO-1 was significantly upregulated in ZIKV-H-infected BMECs, while occludin and claudin-5 levels were significantly downregulated in BMECs infected by all three studied viral strains. Interestingly, BMEC permeability was not disturbed by ZIKV infection, even in the presence of a very high viral load (MOI 10). All studied ZIKV strains productively infected wild-type C57BL/J mice after intravenous infection with 107 PFU. Viral load was detected in the plasma, spleen, and brain from 1 to 8 dpi. Peak brain infection was observed at 2 dpi; therefore, TJ protein expression was assessed at this time point. Claudin-5 was significantly downregulated in ZIKV-U-infected animals and the BBB integrity was significantly disturbed in ZIKV-H-infected animals. Our results suggest that ZIKV penetrates the brain parenchyma early after infection with concurrent alterations of TJ protein expression and disruption of the BBB permeability in a strain-dependent manner.
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Affiliation(s)
- Ana Rachel Leda
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Luc Bertrand
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Ibolya Edit Andras
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Nazira El-Hage
- Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
| | - Madhavan Nair
- Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
| | - Michal Toborek
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, United States
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30
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Rosa RL, Santi L, Berger M, Tureta EF, Quincozes-Santos A, Souza DO, Guimarães JA, Beys-da-Silva WO. ZIKAVID-Zika virus infection database: a new platform to analyze the molecular impact of Zika virus infection. J Neurovirol 2019; 26:77-83. [PMID: 31512145 DOI: 10.1007/s13365-019-00799-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 08/06/2019] [Accepted: 08/22/2019] [Indexed: 12/11/2022]
Abstract
The recent outbreak of Zika virus (ZIKV) in Brazil and other countries globally demonstrated the relevance of ZIKV studies. During and after this outbreak, there was an intense increase in scientific production on ZIKV infections, especially toward alterations promoted by the infection and related to clinical outcomes. Considering this massive amount of new data, mainly thousands of genes and proteins whose expression is impacted by ZIKV infection, the ZIKA Virus Infection Database (ZIKAVID) was created. ZIKAVID is an online database that comprises all genes or proteins, and associated information, for which expression was experimentally measured and found to be altered after ZIKV infection. The database, available at https://zikavid.org, contains 16,984 entries of gene expression measurements from a total of 7348 genes. It allows users to easily perform searches for different experimental hosts (cell lines, tissues, and animal models), ZIKV strains (African, Asian, and Brazilian), and target molecules (messenger RNA [mRNA] and protein), among others, used in differential expression studies regarding ZIKV infection. In this way, the ZIKAVID will serve as an additional and important resource to improve the characterization of the molecular impact and pathogenesis associated with ZIKV infection.
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Affiliation(s)
- Rafael L Rosa
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga, 2752 suit 709, Porto Alegre, RS, Brazil.,Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Lucélia Santi
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga, 2752 suit 709, Porto Alegre, RS, Brazil.,Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Markus Berger
- Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Emanuela F Tureta
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga, 2752 suit 709, Porto Alegre, RS, Brazil
| | - André Quincozes-Santos
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Diogo O Souza
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Jorge A Guimarães
- Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Walter O Beys-da-Silva
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga, 2752 suit 709, Porto Alegre, RS, Brazil. .,Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.
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Hayashida E, Ling ZL, Ashhurst TM, Viengkhou B, Jung SR, Songkhunawej P, West PK, King NJC, Hofer MJ. Zika virus encephalitis in immunocompetent mice is dominated by innate immune cells and does not require T or B cells. J Neuroinflammation 2019; 16:177. [PMID: 31511023 PMCID: PMC6740023 DOI: 10.1186/s12974-019-1566-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 08/28/2019] [Indexed: 12/13/2022] Open
Abstract
Background Until the end of the twentieth century, Zika virus (ZIKV) was thought to cause a mostly mild, self-limiting disease in humans. However, as the geographic distribution of ZIKV has shifted, so too has its pathogenicity. Modern-day ZIKV infection is now known to cause encephalitis, acute disseminated encephalomyelitis, and Guillain-Barré syndrome in otherwise healthy adults. Nevertheless, the underlying pathogenetic mechanisms responsible for this shift in virulence remain unclear. Methods Here, we investigated the contribution of the innate versus the adaptive immune response using a new mouse model involving intracranial infection of adult immunocompetent mice with a moderately low dose of ZIKV MR766. To determine the contribution of type I interferons (IFN-Is) and adaptive immune cells, we also studied mice deficient for the IFN-I receptor 1 (Ifnar1−/−) and recombination-activating gene 1 (Rag1−/−). Results We show that intracranial infection with ZIKV resulted in lethal encephalitis. In wild-type mice, ZIKV remained restricted predominantly to the central nervous system (CNS) and infected neurons, whereas astrocytes and microglia were spared. Histological and molecular analysis revealed prominent activation of resident microglia and infiltrating monocytes that were accompanied by an expression of pro-inflammatory cytokines. The disease was independent of T and B cells. Importantly, unlike peripheral infection, IFN-Is modulated but did not protect from infection and lethal disease. Lack of IFN-I signaling resulted in spread of the virus, generalized inflammatory changes, and accelerated disease onset. Conclusions Using intracranial infection of immunocompetent wild-type mice with ZIKV, we demonstrate that in contrast to the peripheral immune system, the CNS is susceptible to infection and responds to ZIKV by initiating an antiviral immune response. This response is dominated by resident microglia and infiltrating monocytes and macrophages but does not require T or B cells. Unlike in the periphery, IFN-Is in the CNS cannot prevent the establishment of infection. Our findings show that ZIKV encephalitis in mice is dependent on the innate immune response, and adaptive immune cells play at most a minor role in disease pathogenesis. Electronic supplementary material The online version of this article (10.1186/s12974-019-1566-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Emina Hayashida
- School of Life and Environmental Sciences, the Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, and the Bosch Institute, The University of Sydney, Sydney, Australia
| | - Zheng Lung Ling
- Discipline of Pathology, the Marie Bashir Institute for Infectious Diseases and Biosecurity, the Bosch Institute, Charles Perkins Centre, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Thomas M Ashhurst
- Discipline of Pathology, the Marie Bashir Institute for Infectious Diseases and Biosecurity, the Bosch Institute, Charles Perkins Centre, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Sydney Cytometry Facility, The University of Sydney and the Centenary Institute, Sydney, Australia
| | - Barney Viengkhou
- School of Life and Environmental Sciences, the Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, and the Bosch Institute, The University of Sydney, Sydney, Australia
| | - So Ri Jung
- School of Life and Environmental Sciences, the Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, and the Bosch Institute, The University of Sydney, Sydney, Australia
| | - Pattama Songkhunawej
- School of Life and Environmental Sciences, the Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, and the Bosch Institute, The University of Sydney, Sydney, Australia
| | - Phillip K West
- School of Life and Environmental Sciences, the Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, and the Bosch Institute, The University of Sydney, Sydney, Australia
| | - Nicholas J C King
- Discipline of Pathology, the Marie Bashir Institute for Infectious Diseases and Biosecurity, the Bosch Institute, Charles Perkins Centre, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Sydney Cytometry Facility, The University of Sydney and the Centenary Institute, Sydney, Australia
| | - Markus J Hofer
- School of Life and Environmental Sciences, the Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, and the Bosch Institute, The University of Sydney, Sydney, Australia. .,School of Life and Environmental Sciences, The University of Sydney, Molecular Bioscience Bldg., Maze Crescent G08, Sydney, NSW, 2006, Australia.
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Steinmetz M, Lima D, Viana AG, Fujiwara ST, Pessôa CA, Etto RM, Wohnrath K. A sensitive label-free impedimetric DNA biosensor based on silsesquioxane-functionalized gold nanoparticles for Zika Virus detection. Biosens Bioelectron 2019; 141:111351. [DOI: 10.1016/j.bios.2019.111351] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 05/22/2019] [Accepted: 05/23/2019] [Indexed: 01/08/2023]
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Lecouturier V, Bernard MC, Berry C, Carayol S, Richier E, Boudet F, Heinrichs J. Immunogenicity and protection conferred by an optimized purified inactivated Zika vaccine in mice. Vaccine 2019; 37:2679-2686. [PMID: 30967310 DOI: 10.1016/j.vaccine.2019.04.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/29/2019] [Accepted: 04/04/2019] [Indexed: 01/30/2023]
Abstract
After decades of inconsequential infections, and sporadic outbreaks in the Asia-Pacific region between 2007 and 2013, Zika virus caused a widespread epidemic in South America in 2015 that was complicated by severe congenital infections. After the WHO declared a Public Health Emergency of International Concern in February 2016, vaccine development efforts based on different platforms were initiated. Several candidates have since been evaluated in clinical phase I studies. Of these, a Zika purified inactivated vaccine (ZPIV), adjuvanted with aluminum hydroxide, developed by the Walter Reed Army Institute of Research (WRAIR), yielded high seroconversion rates. Sanofi Pasteur further optimized the vaccine in terms of production scale, purification conditions and regulatory compliance, using its experience in flavivirus vaccine development. Here we report that the resulting optimized vaccine (ZPIV-SP) elicited robust seroneutralizing antibody responses and provided complete protection from homologous Zika virus strain challenge in immunocompetent BALB/c mice. ZPIV-SP also showed improved immunogenicity compared with the first-generation vaccine, and improved efficacy in the more permissive interferon receptor-deficient A129 mice. Finally, analysis of the IgG response directed towards nonstructural protein 1 (NS1) suggests that viral NS1 was efficiently removed during the optimized purification process of ZPIV-SP. Together, these results suggest that the optimized vaccine is well suited for further evaluation in larger animal models and late-stage clinical studies.
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Affiliation(s)
| | | | - Catherine Berry
- Research & Development, Sanofi Pasteur, Marcy l'Etoile, France
| | | | - Eric Richier
- Analytical R&D Sanofi Pasteur, Marcy l'Etoile, France
| | - Florence Boudet
- Research & Development, Sanofi Pasteur, Marcy l'Etoile, France
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Pardy RD, Valbon SF, Richer MJ. Running interference: Interplay between Zika virus and the host interferon response. Cytokine 2019; 119:7-15. [PMID: 30856603 DOI: 10.1016/j.cyto.2019.02.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/07/2019] [Accepted: 02/10/2019] [Indexed: 12/11/2022]
Abstract
The interferon (IFN) family of cytokines is a crucial part of the host's ability to mount an effective immune response against viral infections. In addition to establishing an antiviral state within cells, IFNs also support the optimal activation of other key immune cell types. The ability of members of the Flaviviridae family to suppress type I IFN responses has been well-described. Of these viruses, Zika virus (ZIKV) has recently attracted international attention due to a series of major outbreaks that featured the novel association of neurological symptoms with infection. Researchers have begun to investigate the strategies ZIKV uses to evade type I IFNs, and the impact this has on the host. However, a unique feature of ZIKV infection compared to other flaviviruses is its capacity to be transmitted sexually, as well as its ability to infect and persist within reproductive tissues. As such, this raises the question of a potential role for type III IFN during ZIKV infection. In this review, we will discuss the interplay between these two classes of IFN with ZIKV, models that have been used to interrogate these interactions, and the effect this interplay has on infection and infection outcomes. We will also consider the intriguing possibility of whether ZIKV has evolved improved evasion mechanisms to suppress the IFN response in recent outbreaks.
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Affiliation(s)
- Ryan D Pardy
- Department of Microbiology and Immunology, McGill University, Montreal, Quebec, Canada; Rosalind & Morris Goodman Cancer Research Centre, McGill University, Montreal, Quebec, Canada
| | - Stefanie F Valbon
- Department of Microbiology and Immunology, McGill University, Montreal, Quebec, Canada; Rosalind & Morris Goodman Cancer Research Centre, McGill University, Montreal, Quebec, Canada
| | - Martin J Richer
- Department of Microbiology and Immunology, McGill University, Montreal, Quebec, Canada; Rosalind & Morris Goodman Cancer Research Centre, McGill University, Montreal, Quebec, Canada.
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Simonin Y, Erkilic N, Damodar K, Clé M, Desmetz C, Bolloré K, Taleb M, Torriano S, Barthelemy J, Dubois G, Lajoix AD, Foulongne V, Tuaillon E, Van de Perre P, Kalatzis V, Salinas S. Zika virus induces strong inflammatory responses and impairs homeostasis and function of the human retinal pigment epithelium. EBioMedicine 2019; 39:315-331. [PMID: 30579862 PMCID: PMC6354710 DOI: 10.1016/j.ebiom.2018.12.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/19/2018] [Accepted: 12/06/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Zika virus (ZIKV) has recently re-emerged as a pathogenic agent with epidemic capacities as was well illustrated in South America. Because of the extent of this health crisis, a number of more serious symptoms have become associated with ZIKV infection than what was initially described. In particular, neuronal and ocular disorders have been characterized, both in infants and in adults. Notably, the macula and the retina can be strongly affected by ZIKV, possibly by a direct effect of the virus. This is supported by the detection of replicative and infectious virus in lachrimal fluid in human patients and mouse models. METHODS Here, we used an innovative, state-of-the-art iPSC-derived human retinal pigment epithelium (RPE) model to study ZIKV retinal impairment. FINDINGS We showed that the human RPE is highly susceptible to ZIKV infection and that a ZIKV African strain was more virulent and led to a more potent epithelium disruption and stronger anti-viral response than an Asian strain, suggesting lineage differences. Moreover, ZIKV infection led to impaired membrane dynamics involved in endocytosis, organelle biogenesis and potentially secretion, key mechanisms of RPE homeostasis and function. INTERPRETATION Taken together, our results suggest that ZIKV has a highly efficient ocular tropism, which creates a strong inflammatory environment that could have acute or chronic adverse effects. FUND: This work was funded by Retina France, REACTing and La Région Languedoc-Roussillon.
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Affiliation(s)
- Yannick Simonin
- Pathogenesis and Control of Chronic Infections, INSERM, Etablissement Français du Sang, University of Montpellier, Montpellier, France
| | - Nejla Erkilic
- Institute for Neurosciences of Montpellier, INSERM, University of Montpellier, Montpellier, France
| | - Krishna Damodar
- Institute for Neurosciences of Montpellier, INSERM, University of Montpellier, Montpellier, France
| | - Marion Clé
- Pathogenesis and Control of Chronic Infections, INSERM, Etablissement Français du Sang, University of Montpellier, Montpellier, France
| | - Caroline Desmetz
- BioCommunication en CardioMétabolique, University of Montpellier, Montpellier, France
| | - Karine Bolloré
- Pathogenesis and Control of Chronic Infections, INSERM, Etablissement Français du Sang, University of Montpellier, Montpellier, France
| | - Mehdi Taleb
- Pathogenesis and Control of Chronic Infections, INSERM, Etablissement Français du Sang, University of Montpellier, Montpellier, France
| | - Simona Torriano
- Institute for Neurosciences of Montpellier, INSERM, University of Montpellier, Montpellier, France
| | - Jonathan Barthelemy
- Pathogenesis and Control of Chronic Infections, INSERM, Etablissement Français du Sang, University of Montpellier, Montpellier, France
| | - Grégor Dubois
- Institute for Neurosciences of Montpellier, INSERM, University of Montpellier, Montpellier, France
| | - Anne Dominique Lajoix
- BioCommunication en CardioMétabolique, University of Montpellier, Montpellier, France
| | - Vincent Foulongne
- Pathogenesis and Control of Chronic Infections. INSERM, University of Montpellier, Etablissement Français du Sang, CHU Montpellier, Montpellier, France
| | - Edouard Tuaillon
- Pathogenesis and Control of Chronic Infections. INSERM, University of Montpellier, Etablissement Français du Sang, CHU Montpellier, Montpellier, France
| | - Philippe Van de Perre
- Pathogenesis and Control of Chronic Infections. INSERM, University of Montpellier, Etablissement Français du Sang, CHU Montpellier, Montpellier, France
| | - Vasiliki Kalatzis
- Institute for Neurosciences of Montpellier, INSERM, University of Montpellier, Montpellier, France.
| | - Sara Salinas
- Pathogenesis and Control of Chronic Infections, INSERM, Etablissement Français du Sang, University of Montpellier, Montpellier, France.
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Azar SR, Rossi SL, Haller SH, Yun R, Huang JH, Plante JA, Zhou J, Olano JP, Roundy CM, Hanley KA, Weaver SC, Vasilakis N. ZIKV Demonstrates Minimal Pathologic Effects and Mosquito Infectivity in Viremic Cynomolgus Macaques. Viruses 2018; 10:v10110661. [PMID: 30469417 PMCID: PMC6267344 DOI: 10.3390/v10110661] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 11/13/2018] [Accepted: 11/19/2018] [Indexed: 12/15/2022] Open
Abstract
To evaluate the effects of ZIKV infection on non-human primates (NHPs), as well as to investigate whether these NHPs develop sufficient viremia to infect the major urban vector mosquito, Aedes aegypti, four cynomolgus macaques (Macaca fascicularis) were subcutaneously infected with 5.0 log10 focus-forming units (FFU) of DNA clone-derived ZIKV strain FSS13025 (Asian lineage, Cambodia, 2010). Following infection, the animals were sampled (blood, urine, tears, and saliva), underwent daily health monitoring, and were exposed to Ae. aegypti at specified time points. All four animals developed viremia, which peaked 3⁻4 days post-infection at a maximum value of 6.9 log10 genome copies/mL. No virus was detected in urine, tears, or saliva. Infection by ZIKV caused minimal overt disease: serum biochemistry and CBC values largely fell within the normal ranges, and cytokine elevations were minimal. Strikingly, the minimally colonized population of Ae. aegypti exposed to viremic animals demonstrated a maximum infection rate of 26% during peak viremia, with two of the four macaques failing to infect a single mosquito at any time point. These data indicate that cynomolgus macaques may be an effective model for ZIKV infection of humans and highlights the relative refractoriness of Ae. aegypti for ZIKV infection at the levels of viremia observed.
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Affiliation(s)
- Sasha R Azar
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA.
- Institute for Translational Sciences, University of Texas Medical Branch, Galveston, TX 77555, USA.
| | - Shannan L Rossi
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA.
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX 77555, USA.
- World Reference Center for Emerging Viruses and Arboviruses, University of Texas Medical Branch, Galveston, TX 77555, USA.
| | - Sherry H Haller
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA.
| | - Ruimei Yun
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA.
| | - Jing H Huang
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.
| | - Jessica A Plante
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA.
| | - Jiehua Zhou
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.
| | - Juan P Olano
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.
| | - Christopher M Roundy
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA.
- Institute for Translational Sciences, University of Texas Medical Branch, Galveston, TX 77555, USA.
| | - Kathryn A Hanley
- Department of Biology, New Mexico State University, Las Cruces, NM 88003, USA.
| | - Scott C Weaver
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA.
- Institute for Translational Sciences, University of Texas Medical Branch, Galveston, TX 77555, USA.
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX 77555, USA.
- World Reference Center for Emerging Viruses and Arboviruses, University of Texas Medical Branch, Galveston, TX 77555, USA.
| | - Nikos Vasilakis
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX 77555, USA.
- World Reference Center for Emerging Viruses and Arboviruses, University of Texas Medical Branch, Galveston, TX 77555, USA.
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Alves MP, Vielle NJ, Thiel V, Pfaender S. Research Models and Tools for the Identification of Antivirals and Therapeutics against Zika Virus Infection. Viruses 2018; 10:v10110593. [PMID: 30380760 PMCID: PMC6265910 DOI: 10.3390/v10110593] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 10/24/2018] [Accepted: 10/26/2018] [Indexed: 12/13/2022] Open
Abstract
Zika virus recently re-emerged and caused global outbreaks mainly in Central Africa, Southeast Asia, the Pacific Islands and in Central and South America. Even though there is a declining trend, the virus continues to spread throughout different geographical regions of the world. Since its re-emergence in 2015, massive advances have been made regarding our understanding of clinical manifestations, epidemiology, genetic diversity, genomic structure and potential therapeutic intervention strategies. Nevertheless, treatment remains a challenge as there is no licensed effective therapy available. This review focuses on the recent advances regarding research models, as well as available experimental tools that can be used for the identification and characterization of potential antiviral targets and therapeutic intervention strategies.
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Affiliation(s)
- Marco P Alves
- Institute of Virology and Immunology, 3012 Bern, Switzerland.
- Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland.
| | - Nathalie J Vielle
- Institute of Virology and Immunology, 3012 Bern, Switzerland.
- Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland.
- Graduate School for Cellular and Biomedical Sciences, University of Bern, 3012 Bern, Switzerland.
| | - Volker Thiel
- Institute of Virology and Immunology, 3012 Bern, Switzerland.
- Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland.
| | - Stephanie Pfaender
- Institute of Virology and Immunology, 3012 Bern, Switzerland.
- Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland.
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Kim JA, Seong RK, Son SW, Shin OS. Insights into ZIKV-Mediated Innate Immune Responses in Human Dermal Fibroblasts and Epidermal Keratinocytes. J Invest Dermatol 2018; 139:391-399. [PMID: 30218650 DOI: 10.1016/j.jid.2018.07.038] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 07/19/2018] [Accepted: 07/25/2018] [Indexed: 01/08/2023]
Abstract
Zika virus (ZIKV) has emerged as a global pathogen causing significant public health concern. ZIKV infections in humans principally occur via mosquito bites. Thus, host skin cells are permissive to ZIKV infection and are the first line of defense against the virus. Here, we examined the role and mechanisms of antiviral skin immunity against ZIKV infection. ZIKV infection (African lineage MR766) in human dermal fibroblasts, human epidermal keratinocytes, and HaCaT keratinocytes resulted in distinct expression changes in RIG-I-like receptors, such as RIG-I and MDA5. Inhibition of RIG-I using small interfering RNA resulted in increased viral gene expression and reduced induction of IFNs and IFN-stimulated genes. Furthermore, ZIKV NS1 directly interacted with RIG-I or MDA5 and down-regulated RIG-I-like receptor-mediated antiviral signaling pathways. Asian lineage ZIKV (PRVABC59) infection also showed a distinct pattern of antiviral immunity in human skin cells, compared with other ZIKV strains. Additionally, ZIKV infections in human neural progenitor cells induced the robust activation of RIG-I-like receptor-mediated signaling, followed by highly enhanced IFN-stimulated gene expression. Our findings provide important insights into ZIKV tropism and subsequent antiviral signaling pathways that regulate ZIKV replication in human dermal fibroblasts and human epidermal keratinocytes.
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Affiliation(s)
- Ji-Ae Kim
- Department of Biomedical Sciences, College of Medicine, Korea University Guro Hospital, Seoul, Republic of Korea
| | - Rak-Kyun Seong
- Department of Biomedical Sciences, College of Medicine, Korea University Guro Hospital, Seoul, Republic of Korea
| | - Sang Wook Son
- Department of Dermatology and Division of BK21 Project for Biomedical Science, Korea University College of Medicine, Seoul, Republic of Korea
| | - Ok Sarah Shin
- Department of Biomedical Sciences, College of Medicine, Korea University Guro Hospital, Seoul, Republic of Korea.
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Critical role of CD4 + T cells and IFNγ signaling in antibody-mediated resistance to Zika virus infection. Nat Commun 2018; 9:3136. [PMID: 30087337 PMCID: PMC6081430 DOI: 10.1038/s41467-018-05519-4] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 07/06/2018] [Indexed: 02/04/2023] Open
Abstract
Protective adaptive immunity to Zika virus (ZIKV) has been mainly attributed to cytotoxic CD8+ T cells and neutralizing antibodies, while the participation of CD4+ T cells in resistance has remained largely uncharacterized. Here, we show a neutralizing antibody response, dependent on CD4+ T cells and IFNγ signaling, which we detected during the first week of infection and is associated with reduced viral load in the brain, prevention of rapid disease onset and survival. We demonstrate participation of these components in the resistance to ZIKV during primary infection and in murine adoptive transfer models of heterologous ZIKV infection in a background of IFNR deficiency. The protective effect of adoptively transferred CD4+ T cells requires IFNγ signaling, CD8+ T cells and B lymphocytes in recipient mice. Together, this indicates the importance of CD4+ T cell responses in future vaccine design for ZIKV.
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Manet C, Roth C, Tawfik A, Cantaert T, Sakuntabhai A, Montagutelli X. Host genetic control of mosquito-borne Flavivirus infections. Mamm Genome 2018; 29:384-407. [PMID: 30167843 PMCID: PMC7614898 DOI: 10.1007/s00335-018-9775-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 08/20/2018] [Indexed: 12/12/2022]
Abstract
Flaviviruses are arthropod-borne viruses, several of which represent emerging or re-emerging pathogens responsible for widespread infections with consequences ranging from asymptomatic seroconversion to severe clinical diseases and congenital developmental deficits. This variability is due to multiple factors including host genetic determinants, the role of which has been investigated in mouse models and human genetic studies. In this review, we provide an overview of the host genes and variants which modify susceptibility or resistance to major mosquito-borne flaviviruses infections in mice and humans.
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Affiliation(s)
- Caroline Manet
- Mouse Genetics Laboratory, Department of Genomes and Genetics, Institut Pasteur, Paris, France
| | - Claude Roth
- Functional Genetics of Infectious Diseases Unit, Department of Genomes and Genetics, Institut Pasteur, Paris, France
- CNRS, UMR 2000-Génomique Evolutive, Modélisation et Santé, Institut Pasteur, 75015, Paris, France
| | - Ahmed Tawfik
- Functional Genetics of Infectious Diseases Unit, Department of Genomes and Genetics, Institut Pasteur, Paris, France
- CNRS, UMR 2000-Génomique Evolutive, Modélisation et Santé, Institut Pasteur, 75015, Paris, France
| | - Tineke Cantaert
- Immunology Group, Institut Pasteur du Cambodge, International Network of Pasteur Institutes, Phnom Penh, 12201, Cambodia
| | - Anavaj Sakuntabhai
- Functional Genetics of Infectious Diseases Unit, Department of Genomes and Genetics, Institut Pasteur, Paris, France.
- CNRS, UMR 2000-Génomique Evolutive, Modélisation et Santé, Institut Pasteur, 75015, Paris, France.
| | - Xavier Montagutelli
- Mouse Genetics Laboratory, Department of Genomes and Genetics, Institut Pasteur, Paris, France.
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Beaver JT, Lelutiu N, Habib R, Skountzou I. Evolution of Two Major Zika Virus Lineages: Implications for Pathology, Immune Response, and Vaccine Development. Front Immunol 2018; 9:1640. [PMID: 30072993 PMCID: PMC6058022 DOI: 10.3389/fimmu.2018.01640] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 07/03/2018] [Indexed: 12/13/2022] Open
Abstract
Zika virus (ZIKV) became a public health emergency of global concern in 2015 due to its rapid expansion from French Polynesia to Brazil, spreading quickly throughout the Americas. Its unexpected correlation to neurological impairments and defects, now known as congenital Zika syndrome, brought on an urgency to characterize the pathology and develop safe, effective vaccines. ZIKV genetic analyses have identified two major lineages, Asian and African, which have undergone substantial changes during the past 50 years. Although ZIKV infections have been circulating throughout Africa and Asia for the later part of the 20th century, the symptoms were mild and not associated with serious pathology until now. ZIKV evolution also took the form of novel modes of transmission, including maternal-fetal transmission, sexual transmission, and transmission through the eye. The African and Asian lineages have demonstrated differential pathogenesis and molecular responses in vitro and in vivo. The limited number of human infections prior to the 21st century restricted ZIKV research to in vitro studies, but current animal studies utilize mice deficient in type I interferon (IFN) signaling in order to invoke enhanced viral pathogenesis. This review examines ZIKV strain differences from an evolutionary perspective, discussing how these differentially impact pathogenesis via host immune responses that modulate IFN signaling, and how these differential effects dictate the future of ZIKV vaccine candidates.
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Affiliation(s)
| | | | | | - Ioanna Skountzou
- Department of Microbiology and Immunology, Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA, United States
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Did Zika Virus Mutate to Cause Severe Outbreaks? Trends Microbiol 2018; 26:877-885. [PMID: 29903417 DOI: 10.1016/j.tim.2018.05.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 05/09/2018] [Accepted: 05/15/2018] [Indexed: 12/12/2022]
Abstract
Zika virus (ZIKV) has challenged the assumed knowledge regarding the pathobiology of flaviviruses. Despite causing sporadic and mild disease in the 50 years since its discovery, Zika virus has now caused multiple outbreaks in dozens of countries worldwide. Moreover, the disease severity in recent outbreaks, with neurological disease in adult and devastating congenital malformations in fetuses, was not previously seen. One hypothesis is that the virus has acquired mutations that have increased its virulence. Indeed, mutations in other arboviruses, such as West Nile virus (WNV), chikungunya virus (CHIKV), and Venezuelan equine encephalitis virus (VEEV), have enhanced outbreaks. This possibility, as well as alternative hypotheses, are explored here.
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Stassen L, Armitage CW, van der Heide DJ, Beagley KW, Frentiu FD. Zika Virus in the Male Reproductive Tract. Viruses 2018; 10:v10040198. [PMID: 29659541 PMCID: PMC5923492 DOI: 10.3390/v10040198] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/11/2018] [Accepted: 04/13/2018] [Indexed: 01/07/2023] Open
Abstract
Arthropod-borne viruses (arboviruses) are resurging across the globe. Zika virus (ZIKV) has caused significant concern in recent years because it can lead to congenital malformations in babies and Guillain-Barré syndrome in adults. Unlike other arboviruses, ZIKV can be sexually transmitted and may persist in the male reproductive tract. There is limited information regarding the impact of ZIKV on male reproductive health and fertility. Understanding the mechanisms that underlie persistent ZIKV infections in men is critical to developing effective vaccines and therapies. Mouse and macaque models have begun to unravel the pathogenesis of ZIKV infection in the male reproductive tract, with the testes and prostate gland implicated as potential reservoirs for persistent ZIKV infection. Here, we summarize current knowledge regarding the pathogenesis of ZIKV in the male reproductive tract, the development of animal models to study ZIKV infection at this site, and prospects for vaccines and therapeutics against persistent ZIKV infection.
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Affiliation(s)
- Liesel Stassen
- Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane 4006, Queensland, Australia.
| | - Charles W Armitage
- Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane 4006, Queensland, Australia.
| | - David J van der Heide
- Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane 4006, Queensland, Australia.
| | - Kenneth W Beagley
- Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane 4006, Queensland, Australia.
| | - Francesca D Frentiu
- Institute of Health and Biomedical Innovation, and School of Biomedical Sciences, Queensland University of Technology, Brisbane 4006, Queensland, Australia.
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Silent infection of human dendritic cells by African and Asian strains of Zika virus. Sci Rep 2018; 8:5440. [PMID: 29615676 PMCID: PMC5882923 DOI: 10.1038/s41598-018-23734-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 03/20/2018] [Indexed: 02/06/2023] Open
Abstract
While Zika virus (ZIKV) circulated for decades (African lineage strains) without report of outbreaks and severe complications, its emergence in French Polynesia and subsequently in the Americas (Asian lineage strains) was associated with description of severe neurological defects in newborns/neonates and adults. With the aim to identify virus lineage-dependent factors, we compared cell susceptibility, virus replication, cell death and innate immune responses following infection with two African and three contemporary Asian lineage strains of ZIKV. To this end, we used green monkey Vero and Aedes albopictus C6/36 cells and human monocyte-derived dendritic cells (DCs). The latter are involved in the pathogenesis of several mosquito-borne Flavivirus infections. In Vero and C6/36 cells, we observed strain- but not lineage-dependent differences in infection profiles. Nevertheless, in human DCs, no significant differences in susceptibility and virus replication were found between lineages and strains. ZIKV induced antiviral interferon type I/III in a limited fashion, with the exception of one African strain. None of the strains induced cell death or DC maturation in terms of MHC II, CD40, CD80/86 or CCR7 expression. Taken together, our data suggest that a large collection of virus isolates needs to be investigated before conclusions on lineage differences can be made.
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Wichgers Schreur PJ, van Keulen L, Anjema D, Kant J, Kortekaas J. Microencephaly in fetal piglets following in utero inoculation of Zika virus. Emerg Microbes Infect 2018; 7:42. [PMID: 29593256 PMCID: PMC5874248 DOI: 10.1038/s41426-018-0044-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/22/2018] [Accepted: 01/23/2018] [Indexed: 11/15/2022]
Abstract
Zika virus (ZIKV) is a mosquito-borne flavivirus that became associated with microcephaly in newborns and Guillain-Barré syndrome in adults after its emergence in the Pacific and the Americas in 2015. Newly developed rodent and nonhuman primate models have already revealed important insights into ZIKV-induced neuropathology. Nonhuman primates are phylogenetically closely related to humans and are therefore preferred human surrogates in ZIKV research. However, the use of nonhuman primates, particularly during gestation, raises ethical issues. Considering that pigs also share many anatomical and physiological features with humans, this species may be an attractive alternative human surrogate for ZIKV research. Here, we inoculated 20 porcine fetuses in utero and assessed the effect of ZIKV on brain development 4 weeks later. All inoculated fetuses presented mild to severe neuropathology, characterized by a depletion of neurons in the cerebral cortex. In most cases, neuronal depletion was confined to specific cerebral lobes without affecting brain size, whereas in severe cases a more generalized depletion resulted in microencephaly. Although the virus was widespread in the sows' placenta at the time of necropsy only low levels of viral RNA were detected in fetal brain samples, thereby preventing the identification of primary target cells. Our findings suggest that pigs can be used to study ZIKV-induced neurodevelopmental defects as currently observed in human neonates, varying from stunted brain growth to localized cortical neuronal depletion in the absence of major macroscopic abnormalities.
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Affiliation(s)
- P J Wichgers Schreur
- Wageningen Bioveterinary Research, Houtribweg 39, 8221 RA, Lelystad, The Netherlands.
| | - L van Keulen
- Wageningen Bioveterinary Research, Houtribweg 39, 8221 RA, Lelystad, The Netherlands
| | - D Anjema
- Wageningen Bioveterinary Research, Houtribweg 39, 8221 RA, Lelystad, The Netherlands
| | - J Kant
- Wageningen Bioveterinary Research, Houtribweg 39, 8221 RA, Lelystad, The Netherlands
| | - J Kortekaas
- Wageningen Bioveterinary Research, Houtribweg 39, 8221 RA, Lelystad, The Netherlands
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Mittal R, Nguyen D, Debs LH, Patel AP, Liu G, Jhaveri VM, S. Kay SI, Mittal J, Bandstra ES, Younis RT, Chapagain P, Jayaweera DT, Liu XZ. Zika Virus: An Emerging Global Health Threat. Front Cell Infect Microbiol 2017; 7:486. [PMID: 29276699 PMCID: PMC5727043 DOI: 10.3389/fcimb.2017.00486] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 11/13/2017] [Indexed: 01/07/2023] Open
Abstract
Zika virus (ZIKV) is an emerging healthcare threat. The presence of the mosquito Aedes species across South and Central America in combination with complementary climates have incited an epidemic of locally transmitted cases of ZIKV infection in Brazil. As one of the most significant current public health concerns in the Americas, ZIKV epidemic has been a cause of alarm due to its known and unknown complications. At this point, there has been a clear association between ZIKV infection and severe clinical manifestations in both adults and neonates, including but not limited to neurological deficits such as Guillain-Barré syndrome (GBS) and microcephaly, respectively. The gravity of the fetal anomalies linked to ZIKV vertical transmission from the mother has prompted a discussion on whether to include ZIKV as a formal member of the TORCH [Toxoplasma gondii, other, rubella virus, cytomegalovirus (CMV), and herpes] family of pathogens known to breach placental barriers and cause congenital disease in the fetus. The mechanisms of these complex phenotypes have yet to be fully described. As such, diagnostic tools are limited and no effective modalities are available to treat ZIKV. This article will review the recent advancements in understanding the pathogenesis of ZIKV infection as well as diagnostic tests available to detect the infection. Due to the increase in incidence of ZIKV infections, there is an immediate need to develop new diagnostic tools and novel preventive as well as therapeutic modalities based on understanding the molecular mechanisms underlying the disease.
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Affiliation(s)
- Rahul Mittal
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL, United States,*Correspondence: Rahul Mittal
| | - Desiree Nguyen
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Luca H. Debs
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Amit P. Patel
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - George Liu
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Vasanti M. Jhaveri
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Sae-In S. Kay
- Department of Surgery, Division of Otorhinolaryngology, Dr. Kiran C. Patel College of Osteopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL, United States
| | - Jeenu Mittal
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Emmalee S. Bandstra
- Division of Neonatology, Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Ramzi T. Younis
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL, United States,Division of Neonatology, Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, United States,Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Prem Chapagain
- Department of Physics and Biomolecular Sciences Institute, Florida International University, Miami, FL, United States
| | - Dushyantha T. Jayaweera
- Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Xue Zhong Liu
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL, United States,Division of Neonatology, Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, United States,Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, United States,Xue Zhong Liu
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McDonald EM, Duggal NK, Brault AC. Pathogenesis and sexual transmission of Spondweni and Zika viruses. PLoS Negl Trop Dis 2017; 11:e0005990. [PMID: 28985234 PMCID: PMC5655359 DOI: 10.1371/journal.pntd.0005990] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Revised: 10/24/2017] [Accepted: 09/23/2017] [Indexed: 12/22/2022] Open
Abstract
The Spondweni serogroup of viruses (Flaviviridae, Flavivirus) is comprised of Spondweni virus (SPONV) and Zika virus (ZIKV), which are mosquito-borne viruses capable of eliciting human disease. Numerous cases of ZIKV sexual transmission in humans have been documented following the emergence of the Asian genotype in the Americas. The African ZIKV genotype virus was previously implicated in the first reported case of ZIKV sexual transmission. Reports of SPONV infection in humans have been associated with non-specific febrile illness, but no association with sexual transmission has been reported. In order to assess the relative efficiency of sexual transmission of different ZIKV strains and the potential capacity of SPONV to be sexually transmitted, viral loads in the male reproductive tract and in seminal fluids were assessed in interferon α/β and –γ receptor deficient (AG129) mice. Male mice were inoculated subcutaneously with Asian genotype ZIKV strains PRVABC59 (Puerto Rico, 2015), FSS13025 (Cambodia, 2010), or P6-740 (Malaysia, 1966); African genotype ZIKV strain DakAr41524 (Senegal, 1984); or SPONV strain SAAr94 (South Africa, 1955). Infectious virus was detected in 60–72% of ejaculates collected from AG129 mice inoculated with ZIKV strains. In contrast, only 4% of ejaculates from SPONV-inoculated AG129 males were found to contain infectious virus, despite viral titers in the testes that were comparable to those of ZIKV-inoculated mice. Based on these results, future studies should be undertaken to assess the role of viral genetic determinants and host tropism that dictate the differential sexual transmission potential of ZIKV and SPONV. The Spondweni serogroup of viruses, which includes Zika virus and Spondweni virus, are mosquito-borne viruses that can cause disease in humans. During the recent outbreak of Zika virus in the Americas, sexual transmission and in utero transmission have also been described. Due to the close genetic identity of Zika and Spondweni viruses, the herein reported study used a mouse model to assess the sexual transmission capacity of Spondweni virus in comparison to recent outbreak Zika strains and older Zika virus strains. In this model, all Zika strains were shed in seminal fluids from infected males. However, the percentage of ejaculates that contained infectious virus was significantly lower for Spondweni-infected males than Zika-infected males. Thus, sexual transmission potential is conserved among Zika viruses and not likely to fully explain the magnitude and dynamics of the recent outbreak in the Americas. In addition, sexual transmission potential should be further evaluated for Spondweni virus. Virus-specific differences in rates of shedding in seminal fluids will inform future studies on the viral determinants of sexual transmission.
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Affiliation(s)
- Erin M. McDonald
- Division of Vector-borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, United States of America
| | - Nisha K. Duggal
- Division of Vector-borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, United States of America
| | - Aaron C. Brault
- Division of Vector-borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, United States of America
- * E-mail:
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