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Roell Y, Pezzi L, Lozano-Parra A, Olson D, Messina J, Quandelacy T, Drexler JF, Brady O, Karimzadeh M, Jaenisch T. Assessing vulnerability for future Zika virus outbreaks using seroprevalence data and environmental suitability maps. PLoS Negl Trop Dis 2024; 18:e0012017. [PMID: 38517912 PMCID: PMC10990225 DOI: 10.1371/journal.pntd.0012017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 04/03/2024] [Accepted: 02/20/2024] [Indexed: 03/24/2024] Open
Abstract
The 2015-17 Zika virus (ZIKV) epidemic in the Americas subsided faster than expected and evolving population immunity was postulated to be the main reason. Herd immunization is suggested to occur around 60-70% seroprevalence, depending on demographic density and climate suitability. However, herd immunity was only documented for a few cities in South America, meaning a substantial portion of the population might still be vulnerable to a future Zika virus outbreak. The aim of our study was to determine the vulnerability of populations to ZIKV by comparing the environmental suitability of ZIKV transmission to the observed seroprevalence, based on published studies. Using a systematic search, we collected seroprevalence and geospatial data for 119 unique locations from 37 studies. Extracting the environmental suitability at each location and converting to a hypothetical expected seroprevalence, we were able to determine the discrepancy between observed and expected. This discrepancy is an indicator of vulnerability and divided into three categories: high risk, low risk, and very low risk. The vulnerability was used to evaluate the level of risk that each location still has for a ZIKV outbreak to occur. Of the 119 unique locations, 69 locations (58%) fell within the high risk category, 47 locations (39%) fell within the low risk category, and 3 locations (3%) fell within the very low risk category. The considerable heterogeneity between environmental suitability and seroprevalence potentially leaves a large population vulnerable to future infection. Vulnerability seems to be especially pronounced at the fringes of the environmental suitability for ZIKV (e.g. Sao Paulo, Brazil). The discrepancies between observed and expected seroprevalence raise the question: "why did the ZIKV epidemic stop with large populations unaffected?". This lack of understanding also highlights that future ZIKV outbreaks currently cannot be predicted with confidence.
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Affiliation(s)
- Yannik Roell
- Center for Global Health, Colorado School of Public Health, University of Colorado, Aurora, Colorado, United States of America
| | - Laura Pezzi
- National Reference Center for Arboviruses, Inserm-IRBA, Marseille, France
- Unité des Virus Émergents (UVE: Aix-Marseille Univ, Universitá di Corsica, IRD 190, Inserm 1207, IRBA), France
| | - Anyela Lozano-Parra
- Grupo de Epidemiología Clínica, Universidad Industrial de Santander, Bucaramanga, Colombia
| | - Daniel Olson
- Center for Global Health, Colorado School of Public Health, University of Colorado, Aurora, Colorado, United States of America
- Division of Pediatric Infectious Diseases, University of Colorado School of Medicine, Aurora, Colorado, United States of America
| | - Jane Messina
- School of Geography and the Environment, University of Oxford, Oxford, United Kingdom
- Oxford School of Global and Area Studies, University of Oxford, Oxford, United Kingdom
| | - Talia Quandelacy
- Department of Epidemiology, University of Colorado, Aurora, Colorado, United States of America
| | - Jan Felix Drexler
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Oliver Brady
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, United Kingdom
- Centre for Mathematical Modelling of Infectious Diseases, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Morteza Karimzadeh
- Department of Geography, University of Colorado, Boulder, Colorado, United States of America
| | - Thomas Jaenisch
- Center for Global Health, Colorado School of Public Health, University of Colorado, Aurora, Colorado, United States of America
- Heidelberg Institute of Global Health (HIGH), Heidelberg University Hospital, Heidelberg, Germany
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2
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Elliott KC, Mattapallil JJ. Zika Virus-A Reemerging Neurotropic Arbovirus Associated with Adverse Pregnancy Outcomes and Neuropathogenesis. Pathogens 2024; 13:177. [PMID: 38392915 PMCID: PMC10892292 DOI: 10.3390/pathogens13020177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 02/07/2024] [Accepted: 02/11/2024] [Indexed: 02/25/2024] Open
Abstract
Zika virus (ZIKV) is a reemerging flavivirus that is primarily spread through bites from infected mosquitos. It was first discovered in 1947 in sentinel monkeys in Uganda and has since been the cause of several outbreaks, primarily in tropical and subtropical areas. Unlike earlier outbreaks, the 2015-2016 epidemic in Brazil was characterized by the emergence of neurovirulent strains of ZIKV strains that could be sexually and perinatally transmitted, leading to the Congenital Zika Syndrome (CZS) in newborns, and Guillain-Barre Syndrome (GBS) along with encephalitis and meningitis in adults. The immune response elicited by ZIKV infection is highly effective and characterized by the induction of both ZIKV-specific neutralizing antibodies and robust effector CD8+ T cell responses. However, the structural similarities between ZIKV and Dengue virus (DENV) lead to the induction of cross-reactive immune responses that could potentially enhance subsequent DENV infection, which imposes a constraint on the development of a highly efficacious ZIKV vaccine. The isolation and characterization of antibodies capable of cross-neutralizing both ZIKV and DENV along with cross-reactive CD8+ T cell responses suggest that vaccine immunogens can be designed to overcome these constraints. Here we review the structural characteristics of ZIKV along with the evidence of neuropathogenesis associated with ZIKV infection and the complex nature of the immune response that is elicited by ZIKV infection.
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Affiliation(s)
- Kenneth C. Elliott
- Department of Microbiology & Immunology, The Henry M Jackson Foundation for Military Medicine, Uniformed Services University, Bethesda, MD 20814, USA
- Department of Microbiology & Immunology, Uniformed Services University, Bethesda, MD 20814, USA
| | - Joseph J. Mattapallil
- Department of Microbiology & Immunology, Uniformed Services University, Bethesda, MD 20814, USA
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3
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Hakami MA. An immunoinformatics and structural vaccinology approach to design a novel and potent multi-epitope base vaccine targeting Zika virus. BMC Chem 2024; 18:31. [PMID: 38350946 PMCID: PMC10865692 DOI: 10.1186/s13065-024-01132-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 01/25/2024] [Indexed: 02/15/2024] Open
Abstract
Zika virus is an infectious virus, that belongs to Flaviviridae family, which is transferred to humans through mosquito vectors and severely threatens human health; but, apart from available resources, no effective and secure vaccine is present against Zika virus, to prevent such infections. In current study, we employed structural vaccinology approach to design an epitope-based vaccine against Zika virus, which is biocompatible, and secure and might trigger an adaptive and innate immune response by using computational approaches. We first retrieved the protein sequence from National Center for Biotechnology Information (NCBI) database and carried out for BLAST P. After BLAST P, predicted protein sequences were shortlisted and checked for allergic features and antigenic properties. Final sequence of Zika virus, with accession number (APO40588.1) was selected based on high antigenic score and non-allergenicity. Final protein sequence used various computational approaches including antigenicity testing, toxicity evaluation, allergenicity, and conservancy assessment to identify superior B-cell and T-cell epitopes. Two B-cell epitopes, five MHC-six MHC-II epitopes and I were used to construct an immunogenic multi-epitope-based vaccine by using suitable linkers. A 50S ribosomal protein was added at N terminal to improve the immunogenicity of vaccine. In molecular docking, strong interactions were presented between constructed vaccine and Toll-like receptor 9 (- 1100.6 kcal/mol), suggesting their possible relevance in the immunological response to vaccine. The molecular dynamics simulations ensure the dynamic and structural stability of constructed vaccine. The results of C-immune simulation revealed that constructed vaccine activate B and T lymphocytes which induce high level of antibodies and cytokines to combat Zika infection. The constructed vaccine is an effective biomarker with non-sensitization, nontoxicity; nonallergic, good immunogenicity, and antigenicity, however, experimental assays are required to verify the results of present study.
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Affiliation(s)
- Mohammed Ageeli Hakami
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Shaqra University, Al-Quwayiyah, Riyadh, Saudi Arabia.
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4
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Obłoza M, Milewska A, Botwina P, Szczepański A, Medaj A, Bonarek P, Szczubiałka K, Pyrć K, Nowakowska M. Curcumin-Poly(sodium 4-styrenesulfonate) Conjugates as Potent Zika Virus Entry Inhibitors. ACS APPLIED MATERIALS & INTERFACES 2024; 16:5426-5437. [PMID: 38277775 PMCID: PMC10859898 DOI: 10.1021/acsami.3c13893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/04/2024] [Accepted: 01/11/2024] [Indexed: 01/28/2024]
Abstract
Curcumin, a natural product with recognized antiviral properties, is limited in its application largely due to its poor solubility. This study presents the synthesis of water-soluble curcumin-poly(sodium 4-styrenesulfonate) (Cur-PSSNan) covalent conjugates. The antiflaviviral activity of conjugates was validated in vitro by using the Zika virus as a model. In the development of these water-soluble curcumin-containing derivatives, we used the macromolecules reported by us to also hamper viral infections. Mechanistic investigations indicated that the conjugates exhibited excellent stability and bioavailability. The curcumin and macromolecules in concerted action interact directly with virus particles and block their attachment to host cells, hampering the infection process.
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Affiliation(s)
- Magdalena Obłoza
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Aleksandra Milewska
- Virogenetics
Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Krakow, Poland
| | - Paweł Botwina
- Virogenetics
Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Krakow, Poland
- Department
of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Artur Szczepański
- Virogenetics
Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Krakow, Poland
| | - Aneta Medaj
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
- Doctoral
School of Exact and Natural Sciences, Jagiellonian
University, Lojasiewicza 11, 30-348 Cracow, Poland
| | - Piotr Bonarek
- Department
of Physical Biochemistry, Faculty of Biochemistry, Biophysics and
Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
| | - Krzysztof Szczubiałka
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Krzysztof Pyrć
- Virogenetics
Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Krakow, Poland
| | - Maria Nowakowska
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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5
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de Sales-Neto JM, Madruga Carvalho DC, Arruda Magalhães DW, Araujo Medeiros AB, Soares MM, Rodrigues-Mascarenhas S. Zika virus: Antiviral immune response, inflammation, and cardiotonic steroids as antiviral agents. Int Immunopharmacol 2024; 127:111368. [PMID: 38103408 DOI: 10.1016/j.intimp.2023.111368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/27/2023] [Accepted: 12/10/2023] [Indexed: 12/19/2023]
Abstract
Zika virus (ZIKV) is a mosquito-borne virus first reported from humans in Nigeria in 1954. The first outbreak occurred in Micronesia followed by an outbreak in French Polynesia and another in Brazil when the virus was associated with numerous cases of severe neurological manifestations such as Guillain-Barre syndrome in adults and congenital zika syndrome in fetuses, particularly congenital microcephaly. Innate immunity is the first line of defense against ZIKV through triggering an antiviral immune response. Along with innate immune responses, a sufficient balance between anti- and pro-inflammatory cytokines and the amount of these cytokines are triggered to enhance the antiviral responses. Here, we reviewed the complex interplay between the mediators and signal pathways that coordinate antiviral immune response and inflammation as a key to understanding the development of the underlying diseases triggered by ZIKV. In addition, we summarize current and new therapeutic strategies for ZIKV infection, highlighting cardiotonic steroids as antiviral drugs for the development of this agent.
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Affiliation(s)
- José Marreiro de Sales-Neto
- Laboratory of Immunobiotechnology, Biotechnology Center, Federal University of Paraíba, João Pessoa, PB, Brazil
| | | | | | | | - Mariana Mendonça Soares
- Laboratory of Immunobiotechnology, Biotechnology Center, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Sandra Rodrigues-Mascarenhas
- Laboratory of Immunobiotechnology, Biotechnology Center, Federal University of Paraíba, João Pessoa, PB, Brazil.
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6
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Zhang B, Yu J, Zhu G, Huang Y, Zhang K, Xiao X, He W, Yuan J, Gao X. Dapoxetine, a Selective Serotonin Reuptake Inhibitor, Suppresses Zika Virus Infection In Vitro. Molecules 2023; 28:8142. [PMID: 38138628 PMCID: PMC10745718 DOI: 10.3390/molecules28248142] [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: 10/30/2023] [Revised: 12/14/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023] Open
Abstract
Zika virus (ZIKV) belongs to the Flavivirus genus of the Flaviviridae family, and is a pathogen posing a significant threat to human health. Currently, there is a lack of internationally approved antiviral drugs for the treatment of ZIKV infection, and symptomatic management remains the primary clinical approach. Consequently, the exploration of safe and effective anti-ZIKV drugs has emerged as a paramount imperative in ZIKV control efforts. In this study, we performed a screening of a compound library consisting of 1789 FDA-approved drugs to identify potential agents with anti-ZIKV activity. We have identified dapoxetine, an orally administered selective serotonin reuptake inhibitor (SSRI) commonly employed for the clinical management of premature ejaculation (PE), as a potential inhibitor of ZIKV RNA-dependent RNA polymerase (RdRp). Consequently, we conducted surface plasmon resonance (SPR) analysis to validate the specific binding of dapoxetine to ZIKV RdRp, and further evaluated its inhibitory effect on ZIKV RdRp synthesis using the ZIKV Gluc reporter gene assay. Furthermore, we substantiated the efficacy of dapoxetine in suppressing intracellular replication of ZIKV, thereby demonstrating a concentration-dependent antiviral effect (EC50 values ranging from 4.20 μM to 12.6 μM) and negligible cytotoxicity (CC50 > 50 μM) across diverse cell lines. Moreover, cell fluorescence staining and Western blotting assays revealed that dapoxetine effectively reduced the expression of ZIKV proteins. Collectively, our findings suggest that dapoxetine exhibits anti-ZIKV effects by inhibiting ZIKV RdRp activity, positioning it as a potential candidate for clinical therapeutic intervention against ZIKV infection.
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Affiliation(s)
- Bingzhi Zhang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China;
- Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, Guangzhou 510080, China; (J.Y.); (G.Z.); (X.X.)
| | - Jianchen Yu
- Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, Guangzhou 510080, China; (J.Y.); (G.Z.); (X.X.)
| | - Ge Zhu
- Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, Guangzhou 510080, China; (J.Y.); (G.Z.); (X.X.)
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Yun Huang
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China;
| | - Kexin Zhang
- School of Public Health, Sun Yat-sen University, Guangzhou 510080, China;
| | - Xuhan Xiao
- Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, Guangzhou 510080, China; (J.Y.); (G.Z.); (X.X.)
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Wenxuan He
- School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, China;
| | - Jie Yuan
- Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, Guangzhou 510080, China; (J.Y.); (G.Z.); (X.X.)
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Xiaoxia Gao
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China;
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7
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Tanelus M, López K, Smith S, Muller JA, Porier DL, Auguste DI, Stone WB, Paulson SL, Auguste AJ. Exploring the immunogenicity of an insect-specific virus vectored Zika vaccine candidate. Sci Rep 2023; 13:19948. [PMID: 37968443 PMCID: PMC10651913 DOI: 10.1038/s41598-023-47086-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 11/08/2023] [Indexed: 11/17/2023] Open
Abstract
Zika virus (ZIKV) is an important re-emerging flavivirus that presents a significant threat to human health worldwide. Despite its importance, no vaccines are approved for use in humans. Insect-specific flaviviruses (ISFVs) have recently garnered attention as an antigen presentation platform for vaccine development and diagnostic applications. Here, we further explore the safety, immunogenicity, and efficacy of a chimeric ISFV-Zika vaccine candidate, designated Aripo-Zika (ARPV/ZIKV). Our results show a near-linear relationship between increased dose and immunogenicity, with 1011 genome copies (i.e., 108 focus forming units) being the minimum dose required for protection from ZIKV-induced morbidity and mortality in mice. Including boosters did not significantly increase the short-term efficacy of ARPV/ZIKV-vaccinated mice. We also show that weanling mice derived from ARPV/ZIKV-vaccinated dams were completely protected from ZIKV-induced morbidity and mortality upon challenge, suggesting efficient transfer of maternally-derived protective antibodies. Finally, in vitro coinfection studies of ZIKV with Aripo virus (ARPV) and ARPV/ZIKV in African green monkey kidney cells (i.e., Vero-76) showed that ARPV and ARPV/ZIKV remain incapable of replication in vertebrate cells, despite the presence of active ZIKV replication. Altogether, our data continue to support ISFV-based vaccines, and specifically the ARPV backbone is a safe, immunogenic and effective vaccine strategy for flaviviruses.
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Affiliation(s)
- Manette Tanelus
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
| | - Krisangel López
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
| | - Shaan Smith
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
| | - John A Muller
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
| | - Danielle L Porier
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
| | - Dawn I Auguste
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
| | - William B Stone
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
| | - Sally L Paulson
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
| | - Albert J Auguste
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA.
- Center for Emerging, Zoonotic, and Arthropod-Borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA.
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8
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Su H, Liu J, Yu J, Qiu Z, Liang W, Wu W, Mo H, Li H, Zhao W, Gu W. EDIII-Fc induces protective immune responses against the Zika virus in mice and rhesus macaque. PLoS Negl Trop Dis 2023; 17:e0011770. [PMID: 37983259 PMCID: PMC10695381 DOI: 10.1371/journal.pntd.0011770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 12/04/2023] [Accepted: 11/06/2023] [Indexed: 11/22/2023] Open
Abstract
Zika virus can infect the fetus through the placental barrier, causing ZIKV congenital syndrome and even miscarriage, which can cause great harm to pregnant women and infants. Currently, there is no vaccine and drug available to combat the Zika virus. In this study, we designed a fusion protein named EDIII-Fc, including the EDIII region of Zika E protein and human IgG Fc fragment, and obtained 293T cells that stably secreted EDIII-Fc protein using the lentiviral expression system. Mice were immunized with the EDIII-Fc protein, and it was observed that viral replication was significantly inhibited in the immunized mice compared to non-immunized mice. In rhesus macaques, we found that EDIII-Fc effectively induce the secretion of neutralizing antibodies and T cell immunity. These experimental data provide valid data for further use of Zika virus E protein to prepare an effective, safe, affordable Zika vaccine.
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Affiliation(s)
- Hailong Su
- School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Jun Liu
- School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Jianhai Yu
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Zhenzhen Qiu
- School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
- Department of Hematologic Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Wenhan Liang
- School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
- Sun Yat-sen Memorial Hospital, Guangzhou, China
| | - Wangsheng Wu
- School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Haifeng Mo
- School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Hongwei Li
- School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Wei Zhao
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Weiwang Gu
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, South China Institute of Large Animal Models for Biomedicine, Wuyi University, Jiangmen, China
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, China
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9
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Evans AB, Winkler CW, Anzick SL, Ricklefs SM, Sturdevant DE, Peterson KE. Zika virus diversity in mice is maintained during early vertical transmission from placenta to fetus, but reduced in fetal bodies and brains at late stages of infection. PLoS Negl Trop Dis 2023; 17:e0011657. [PMID: 37796973 PMCID: PMC10581492 DOI: 10.1371/journal.pntd.0011657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 10/17/2023] [Accepted: 09/11/2023] [Indexed: 10/07/2023] Open
Abstract
Since emerging in French Polynesia and Brazil in the 2010s, Zika virus (ZIKV) has been associated with fetal congenital disease. Previous studies have compared ancestral and epidemic ZIKV strains to identify strain differences that may contribute to vertical transmission and fetal disease. However, within-host diversity in ZIKV populations during vertical transmission has not been well studied. Here, we used the established anti-interferon treated Rag1-/- mouse model of ZIKV vertical transmission to compare genomic variation within ZIKV populations in matched placentas, fetal bodies, and fetal brains via RNASeq. At early stages of vertical transmission, the ZIKV populations in the matched placentas and fetal bodies were similar. Most ZIKV single nucleotide variants were present in both tissues, indicating little to no restriction in transmission of ZIKV variants from placenta to fetus. In contrast, at later stages of fetal infection there was a sharp reduction in ZIKV diversity in fetal bodies and fetal brains. All fetal brain ZIKV populations were comprised of one of two haplotypes, containing either a single variant or three variants together, as largely homogenous populations. In most cases, the dominant haplotype present in the fetal brain was also the dominant haplotype present in the matched fetal body. However, in two of ten fetal brains the dominant ZIKV haplotype was undetectable or present at low frequencies in the matched placenta and fetal body ZIKV populations, suggesting evidence of a strict selective bottleneck and possible selection for certain variants during neuroinvasion of ZIKV into fetal brains.
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Affiliation(s)
- Alyssa B. Evans
- Laboratory of Neurological Infections and Immunity, Neuroimmunology Section; Rocky Mountain Laboratories; National Institute of Allergy and Infectious Diseases (NIAID); National Institutes of Health (NIH); Hamilton, Montana, United States of America
| | - Clayton W. Winkler
- Laboratory of Neurological Infections and Immunity, Neuroimmunology Section; Rocky Mountain Laboratories; National Institute of Allergy and Infectious Diseases (NIAID); National Institutes of Health (NIH); Hamilton, Montana, United States of America
| | - Sarah L. Anzick
- Genomics Research Section, Research Technologies Branch; Rocky Mountain Laboratories; National Institute of Allergy and Infectious Diseases (NIAID); National Institutes of Health (NIH); Hamilton, Montana, United States of America
| | - Stacy M. Ricklefs
- Genomics Research Section, Research Technologies Branch; Rocky Mountain Laboratories; National Institute of Allergy and Infectious Diseases (NIAID); National Institutes of Health (NIH); Hamilton, Montana, United States of America
| | - Dan E. Sturdevant
- Genomics Research Section, Research Technologies Branch; Rocky Mountain Laboratories; National Institute of Allergy and Infectious Diseases (NIAID); National Institutes of Health (NIH); Hamilton, Montana, United States of America
| | - Karin E. Peterson
- Laboratory of Neurological Infections and Immunity, Neuroimmunology Section; Rocky Mountain Laboratories; National Institute of Allergy and Infectious Diseases (NIAID); National Institutes of Health (NIH); Hamilton, Montana, United States of America
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10
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Acosta CJ, Diaz C, Nordio F, Han HH, Moss KJ, Bohning K, Kumar P, Liu M, Patel H, Pacciarini F, Mwangi V, Walter E, Powell TD, El Sahly HM, Baldwin WR, Santangelo J, Anderson EJ, Dubin G. Persistence of Immunogenicity of a Purified Inactivated Zika Virus Vaccine Candidate in Healthy Adults: 2 Years of Follow-up Compared With Natural Infection. J Infect Dis 2023; 227:1303-1312. [PMID: 36484441 PMCID: PMC10226659 DOI: 10.1093/infdis/jiac482] [Citation(s) in RCA: 1] [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: 08/25/2022] [Accepted: 12/09/2022] [Indexed: 09/02/2023] Open
Abstract
BACKGROUND We report 2-year persistence of immune response to Takeda's prophylactic purified formalin-inactivated whole Zika virus vaccine candidate (TAK-426) compared with that observed after natural infection. METHODS A randomized, observer-blind, placebo-controlled, dose-selection, phase 1 trial was conducted in 18-49-year-old adults at 9 centers (7 in the United States, 2 in Puerto Rico) from 13 November 2017 to 24 November 2020. Primary objectives were safety, tolerability, and immunogenicity of 3 increasing doses of TAK-426 administered as 2 doses 28 days apart to flavivirus (FV)-naive and FV-primed adults. Here, we report on safety and persistence of immunity up to 2 years after primary vaccination with 10-μg TAK-426, the highest dose, and compare neutralizing antibody responses with those observed after natural infection. RESULTS TAK-426 at 10-μg had an acceptable safety profile in FV-naive and FV-primed adults up to 24 months after dose 2. Seropositivity for neutralizing antibodies was 100% at 1 year, and 93.8% and 76.2% at 2 years in FV-naive and FV-primed groups, respectively. TAK-426 responses were comparable in magnitude and kinetics with those elicited by natural Zika virus infection. CONCLUSIONS These results support the further clinical development of TAK-426 for both FV-naive and FV-primed populations. CLINICAL TRIALS REGISTRATION NCT03343626.
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Affiliation(s)
| | - Clemente Diaz
- Puerto Rico Clinical and Translational Research Consortium, San Juan, Puerto Rico
| | | | | | | | | | - Pradeep Kumar
- Takeda Pharmaceuticals International AG, Zürich, Switzerland
| | - Mengya Liu
- Takeda Vaccines Inc, Cambridge, Massachusetts, USA
| | - Hetal Patel
- Takeda Vaccines Inc, Cambridge, Massachusetts, USA
| | | | | | - Elke Walter
- Takeda Pharmaceuticals International AG, Zürich, Switzerland
| | - Tim D Powell
- Takeda Vaccines Inc, Cambridge, Massachusetts, USA
| | | | | | | | | | - Gary Dubin
- Takeda Pharmaceuticals International AG, Zürich, Switzerland
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11
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Zhao F, Xu Y, Liu N, Lv D, Chen Y, Liu Z, Jin X, Xiao M, Lavillette D, Zhong J, Bartenschlager R, Long G. Extracellular vesicles from Zika virus-infected cells display viral E protein that binds ZIKV-neutralizing antibodies to prevent infection enhancement. EMBO J 2023; 42:e112096. [PMID: 36734074 PMCID: PMC10015360 DOI: 10.15252/embj.2022112096] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 12/26/2022] [Accepted: 01/12/2023] [Indexed: 02/04/2023] Open
Abstract
Mosquito-borne flaviviruses including Zika virus (ZIKV) represent a public health problem in some parts of the world. Although ZIKV infection is predominantly asymptomatic or associated with mild symptoms, it can lead to neurological complications. ZIKV infection can also cause antibody-dependent enhancement (ADE) of infection with similar viruses, warranting further studies of virion assembly and the function of envelope (E) protein-specific antibodies. Although extracellular vesicles (EVs) from flavivirus-infected cells have been reported to transmit infection, this interpretation is challenged by difficulties in separating EVs from flavivirions due to their similar biochemical composition and biophysical properties. In the present study, a rigorous EV-virion separation method combining sequential ultracentrifugation and affinity capture was developed to study EVs from ZIKV-infected cells. We find that these EVs do not transmit infection, but EVs display abundant E proteins which have an antigenic landscape similar to that of virions carrying E. ZIKV E-coated EVs attenuate antibody-dependent enhancement mediated by ZIKV E-specific and DENV-cross-reactive antibodies in both cell culture and mouse models. We thus report an alternative route for Flavivirus E protein secretion. These results suggest that modulation of E protein release via virions and EVs may present a new approach to regulating flavivirus-host interactions.
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Affiliation(s)
- Fanfan Zhao
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Medical College, Biosafety Level 3 LaboratoryShanghai Institute of Infectious Disease and Biosecurity, Fudan UniversityShanghaiChina
- CAS Key Laboratory of Molecular Virology and ImmunologyInstitut Pasteur of Shanghai, Chinese Academy of SciencesShanghaiChina
| | - Yongfen Xu
- CAS Key Laboratory of Molecular Virology and ImmunologyInstitut Pasteur of Shanghai, Chinese Academy of SciencesShanghaiChina
| | - Na Liu
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Medical College, Biosafety Level 3 LaboratoryShanghai Institute of Infectious Disease and Biosecurity, Fudan UniversityShanghaiChina
| | - Dawei Lv
- CAS Key Laboratory of Molecular Virology and ImmunologyInstitut Pasteur of Shanghai, Chinese Academy of SciencesShanghaiChina
| | - Yujie Chen
- CAS Key Laboratory of Molecular Virology and ImmunologyInstitut Pasteur of Shanghai, Chinese Academy of SciencesShanghaiChina
| | - Zhi Liu
- CAS Key Laboratory of Molecular Virology and ImmunologyInstitut Pasteur of Shanghai, Chinese Academy of SciencesShanghaiChina
| | - Xia Jin
- CAS Key Laboratory of Molecular Virology and ImmunologyInstitut Pasteur of Shanghai, Chinese Academy of SciencesShanghaiChina
| | - Mingbing Xiao
- Department of Gastroenterology and Research Center of Clinical MedicineAffiliated Hospital of Nantong UniversityNantongChina
| | - Dimitri Lavillette
- CAS Key Laboratory of Molecular Virology and ImmunologyInstitut Pasteur of Shanghai, Chinese Academy of SciencesShanghaiChina
| | - Jin Zhong
- CAS Key Laboratory of Molecular Virology and ImmunologyInstitut Pasteur of Shanghai, Chinese Academy of SciencesShanghaiChina
| | - Ralf Bartenschlager
- Department of Infectious Diseases, Molecular VirologyHeidelberg UniversityHeidelbergGermany
- German Center for Infectious Diseases, Heidelberg Partner SiteHeidelbergGermany
| | - Gang Long
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Medical College, Biosafety Level 3 LaboratoryShanghai Institute of Infectious Disease and Biosecurity, Fudan UniversityShanghaiChina
- CAS Key Laboratory of Molecular Virology and ImmunologyInstitut Pasteur of Shanghai, Chinese Academy of SciencesShanghaiChina
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12
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Chui YC, Baud D, Fahmi A, Zumkehr B, Vouga M, Pomar L, Musso D, Thuong BC, Alves M, Stojanovic M. Absence of Zika virus among pregnant women in Vietnam in 2008. Trop Dis Travel Med Vaccines 2023; 9:4. [PMID: 36855197 PMCID: PMC9976504 DOI: 10.1186/s40794-023-00189-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 02/06/2023] [Indexed: 03/02/2023] Open
Abstract
BACKGROUND Despite being first identified in 1947, Zika virus-related outbreaks were first described starting from 2007 culminating with the 2015 Latin American outbreak. Hypotheses indicate that the virus has been circulating in Asia for decades, but reports are scarce. METHODS We performed serological analysis and screened placental samples isolated in 2008 for the presence of Zika virus from pregnant women in Ho Chi Minh City (Vietnam). RESULTS None of the placental samples was positive for Zika virus. Four serum samples out of 176 (2.3%) specifically inhibited Zika virus, with variable degrees of cross-reactivity with other flaviviruses. While one of the four samples inhibited only Zika virus, cross-reactivity with other flaviviruses not included in the study could not be ruled out. CONCLUSION Our results support the conclusion that the virus was not present among pregnant women in the Vietnamese largest city during the initial phases of the epidemic wave.
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Affiliation(s)
- Y.-C. Chui
- grid.8515.90000 0001 0423 4662Materno-Fetal and Obstetrics Research Unit, Department Woman-Mother-Child, Lausanne University Hospital, Lausanne, Switzerland
| | - D. Baud
- grid.8515.90000 0001 0423 4662Materno-Fetal and Obstetrics Research Unit, Department Woman-Mother-Child, Lausanne University Hospital, Lausanne, Switzerland ,grid.9851.50000 0001 2165 4204Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - A. Fahmi
- grid.438536.fInstitute of Virology and Immunology, Bern, Switzerland ,grid.5734.50000 0001 0726 5157Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland ,grid.5734.50000 0001 0726 5157Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - B. Zumkehr
- grid.438536.fInstitute of Virology and Immunology, Bern, Switzerland ,grid.5734.50000 0001 0726 5157Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - M. Vouga
- grid.8515.90000 0001 0423 4662Materno-Fetal and Obstetrics Research Unit, Department Woman-Mother-Child, Lausanne University Hospital, Lausanne, Switzerland
| | - L. Pomar
- grid.8515.90000 0001 0423 4662Materno-Fetal and Obstetrics Research Unit, Department Woman-Mother-Child, Lausanne University Hospital, Lausanne, Switzerland
| | - D. Musso
- Aix Marseille Université, Institut de Recherche Pour Le Développement (IRD), Assistance Publique–Hôpitaux de Marseille, Service de Santé Des Armées, Vecteurs–Infections Tropicales et Méditerranéennes (VITROME), and Institut Hospitalo-Universitaire Méditerranée Infection, Marseille, France ,Laboratoire Eurofins Labazur Guyane, Eurofins, Cayenne, French Guiana
| | - B. C. Thuong
- Tu Du Hospital, District 1, Ho Chi Minh City, Vietnam
| | - M.P. Alves
- grid.438536.fInstitute of Virology and Immunology, Bern, Switzerland ,grid.5734.50000 0001 0726 5157Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland ,grid.5734.50000 0001 0726 5157Multidisciplinary Center for Infectious Diseases (MCID), University of Bern, Bern, Switzerland
| | - M. Stojanovic
- grid.8515.90000 0001 0423 4662Materno-Fetal and Obstetrics Research Unit, Department Woman-Mother-Child, Lausanne University Hospital, Lausanne, Switzerland ,grid.9851.50000 0001 2165 4204Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
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13
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Botwina P, Obłoza M, Bonarek P, Szczubiałka K, Pyrć K, Nowakowska M. Poly(ethylene glycol) -block-poly(sodium 4-styrenesulfonate) Copolymers as Efficient Zika Virus Inhibitors: In Vitro Studies. ACS OMEGA 2023; 8:6875-6883. [PMID: 36844524 PMCID: PMC9948194 DOI: 10.1021/acsomega.2c07610] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
A series of poly(ethylene glycol)-block-poly(sodium 4-styrenesulfonate) (PEG-b-PSSNa) copolymers were synthesized, and their antiviral activity against Zika virus (ZIKV) was determined. The polymers inhibit ZIKV replication in vitro in mammalian cells at nontoxic concentrations. The mechanistic analysis revealed that the PEG-b-PSSNa copolymers interact directly with viral particles in a zipper-like mechanism, hindering their interaction with the permissive cell. The antiviral activity of the copolymers is well-correlated with the length of the PSSNa block, indicating that the copolymers' ionic blocks are biologically active. The blocks of PEG present in copolymers studied do not hinder that interaction. Considering the practical application of PEG-b-PSSNa and the electrostatic nature of the inhibition, the interaction between the copolymers and human serum albumin (HSA) was evaluated. The formation of PEG-b-PSSNa-HSA complexes in the form of negatively charged nanoparticles well-dispersed in buffer solution was observed. That observation is promising, given the possible practical application of the copolymers.
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Affiliation(s)
- Paweł Botwina
- Virogenetics
Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Krakow, Poland
- Microbiology
Department, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Magdalena Obłoza
- Department
of Physical Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Piotr Bonarek
- Department
of Physical Biochemistry, Faculty of Biochemistry, Biophysics and
Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Krzysztof Szczubiałka
- Department
of Physical Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Krzysztof Pyrć
- Virogenetics
Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Krakow, Poland
| | - Maria Nowakowska
- Department
of Physical Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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14
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Huynh LN, Tran LB, Nguyen HS, Ho VH, Parola P, Nguyen XQ. Mosquitoes and Mosquito-Borne Diseases in Vietnam. INSECTS 2022; 13:1076. [PMID: 36554986 PMCID: PMC9781666 DOI: 10.3390/insects13121076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/31/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
Mosquito-borne diseases pose a significant threat to humans in almost every part of the world. Key factors such as global warming, climatic conditions, rapid urbanisation, frequent human relocation, and widespread deforestation significantly increase the number of mosquitoes and mosquito-borne diseases in Vietnam, and elsewhere around the world. In southeast Asia, and notably in Vietnam, national mosquito control programmes contribute to reducing the risk of mosquito-borne disease transmission, however, malaria and dengue remain a threat to public health. The aim of our review is to provide a complete checklist of all Vietnamese mosquitoes that have been recognised, as well as an overview of mosquito-borne diseases in Vietnam. A total of 281 mosquito species of 42 subgenera and 22 genera exist in Vietnam. Of those, Anopheles, Aedes, and Culex are found to be potential vectors for mosquito-borne diseases. Major mosquito-borne diseases in high-incidence areas of Vietnam include malaria, dengue, and Japanese encephalitis. This review may be useful to entomological researchers for future surveys of Vietnamese mosquitoes and to decision-makers responsible for vector control tactics.
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Affiliation(s)
- Ly Na Huynh
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, 13005 Marseille, France
- IHU-Méditerranée Infection, 19-21 Boulevard Jean Moulin, 13005 Marseille, France
- Institute of Malariology, Parasitology and Entomology, Quy Nhon (IMPE-QN), MoH Vietnam, Zone 8, Nhon Phu Ward, Quy Nhon City 590000, Vietnam
| | - Long Bien Tran
- Institute of Malariology, Parasitology and Entomology, Quy Nhon (IMPE-QN), MoH Vietnam, Zone 8, Nhon Phu Ward, Quy Nhon City 590000, Vietnam
| | - Hong Sang Nguyen
- Institute of Malariology, Parasitology and Entomology, Quy Nhon (IMPE-QN), MoH Vietnam, Zone 8, Nhon Phu Ward, Quy Nhon City 590000, Vietnam
| | - Van Hoang Ho
- Institute of Malariology, Parasitology and Entomology, Quy Nhon (IMPE-QN), MoH Vietnam, Zone 8, Nhon Phu Ward, Quy Nhon City 590000, Vietnam
| | - Philippe Parola
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, 13005 Marseille, France
- IHU-Méditerranée Infection, 19-21 Boulevard Jean Moulin, 13005 Marseille, France
| | - Xuan Quang Nguyen
- Institute of Malariology, Parasitology and Entomology, Quy Nhon (IMPE-QN), MoH Vietnam, Zone 8, Nhon Phu Ward, Quy Nhon City 590000, Vietnam
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15
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Shofa M, Okamura T, Urano E, Matsuura Y, Yasutomi Y, Saito A. Repeated Intravaginal Inoculation of Zika Virus Protects Cynomolgus Monkeys from Subcutaneous Superchallenge. Int J Mol Sci 2022; 23:ijms232214002. [PMID: 36430481 PMCID: PMC9696507 DOI: 10.3390/ijms232214002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/08/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022] Open
Abstract
Zika virus (ZIKV) outbreaks in Central and South America caused severe public health problems in 2015 and 2016. These outbreaks were finally contained through several methods, including mosquito control using insecticides and repellents. Additionally, the development of herd immunity in these countries might have contributed to containing the epidemic. While ZIKV is mainly transmitted by mosquito bites and mucosal transmission via bodily fluids, including the semen of infected individuals, has also been reported. We evaluated the effect of mucosal ZIKV infection on continuous subcutaneous challenges in a cynomolgus monkey model. Repeated intravaginal inoculations of ZIKV did not induce detectable viremia or clinical symptoms, and all animals developed a potent neutralizing antibody, protecting animals from the subsequent subcutaneous superchallenge. These results suggest that viral replication at mucosal sites can induce protective immunity without causing systemic viremia or symptoms.
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Affiliation(s)
- Maya Shofa
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-1692, Japan
| | - Tomotaka Okamura
- Tsukuba Primate Research Center, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki 305-0843, Japan
| | - Emiko Urano
- Tsukuba Primate Research Center, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki 305-0843, Japan
| | - Yoshiharu Matsuura
- Center for Infectious Disease Education and Research, Osaka University, Osaka 565-0871, Japan
- Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Yasuhiro Yasutomi
- Tsukuba Primate Research Center, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki 305-0843, Japan
- Department of Molecular and Experimental Medicine, Mie University Graduate School of Medicine, Mie 514-8507, Japan
- Correspondence: (Y.Y.); (A.S.)
| | - Akatsuki Saito
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-1692, Japan
- Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
- Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan
- Correspondence: (Y.Y.); (A.S.)
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16
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Viegas LL, Ventura DDFL, Nunes J. A critical view of the global health emergencies: the 2016 zika epidemic case. CIENCIA & SAUDE COLETIVA 2022. [DOI: 10.1590/1413-812320222711.06852022en] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Abstract The study of global health agenda-setting and issue-prioritization has been one of the key aspects of a critical literature that, in recent years, has aimed to identify the political dimensions of global health governance and to shed light on points of tension, exclusion, and inequality. This essay speaks to this critical global health literature, focusing on the construction of the category of emergencies of international concern. Considering the case of the outbreak of zika and congenital syndrome in Brazil in 2016, it explores the conditions enabling the construction of an emergency. We question the factors and conditions around this public health event that were considered during the decision-making process and that transcended material, more objective data regarding zika’s epidemiology, its morbimortality, or its association with congenital malformations. We conclude that the securitized context and the growing relevance of risk to global health are important conditions for understanding emergency declarations.
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17
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Viegas LL, Ventura DDFL, Nunes J. Uma leitura crítica das emergências em saúde global: o caso da epidemia de zika de 2016. CIENCIA & SAUDE COLETIVA 2022; 27:4075-4084. [DOI: 10.1590/1413-812320222711.06852022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 05/09/2022] [Indexed: 11/21/2022] Open
Abstract
Resumo O estudo da definição de agendas e prioridades da saúde global tem sido, nos últimos anos, uma das prioridades de uma literatura crítica que visa identificar as dimensões políticas da governança global em saúde, e que enfatiza os pontos de tensão, exclusão e desigualdade. O presente ensaio se posiciona nesta leitura crítica da saúde global, focando a construção da categoria de emergência de importância internacional. Considerando em específico o caso do surto de zika e de síndromes congênitas no Brasil, em 2016, explora as condições que possibilitam a construção de uma emergência. Questionamos os fatores e condições em torno desse evento de saúde pública que eventualmente foram considerados no processo decisório, e que vão além dos dados materiais mais objetivos relativos à epidemiologia do zika, à sua morbi-mortalidade ou à sua associação com as malformações congênitas. Concluímos que o contexto securitário e a crescente importância do risco na saúde global são condições importantes para entender as declarações de emergência.
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18
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Ward D, Gomes AR, Tetteh KKA, Sepúlveda N, Gomez LF, Campino S, Clark TG. Sero-epidemiological study of arbovirus infection following the 2015-2016 Zika virus outbreak in Cabo Verde. Sci Rep 2022; 12:11719. [PMID: 35810191 PMCID: PMC9271056 DOI: 10.1038/s41598-022-16115-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 07/05/2022] [Indexed: 11/09/2022] Open
Abstract
In November 2015, cases of Zika virus infection were recorded in Cabo Verde (Africa), originating from Brazil. The outbreak subsided after seven months with 7580 suspected cases. We performed a serological survey (n = 431) in Praia, the capital city, 3 months after transmission ceased. Serum samples were screened for arbovirus antibodies using ELISA techniques and revealed seroconverted individuals with Zika (10.9%), dengue (1-4) (12.5%), yellow fever (0.2%) and chikungunya (2.6%) infections. Zika seropositivity was predominantly observed amongst females (70%). Using a logistic model, risk factors for increased odds of Zika seropositivity included age, self-reported Zika infection, and dengue seropositivity. Serological data from Zika and dengue virus assays were strongly correlated (Spearman's rs = 0.80), which reduced when using a double antigen binding ELISA (Spearman's rs = 0.54). Overall, our work improves an understanding of how Zika and other arboviruses have spread throughout the Cabo Verde population. It also demonstrates the utility of serological assay formats for outbreak investigations.
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Affiliation(s)
- Daniel Ward
- Department of Infection Biology, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
| | | | - Kevin K A Tetteh
- Department of Infection Biology, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
| | - Nuno Sepúlveda
- Warsaw University of Technology, Warsaw, Poland
- Universidade de Lisboa, Lisbon, Portugal
| | | | - Susana Campino
- Department of Infection Biology, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
| | - Taane G Clark
- Department of Infection Biology, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK.
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19
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Yadav PD, Kaur H, Gupta N, Sahay RR, Sapkal GN, Shete AM, Deshpande GR, Mohandas S, Majumdar T, Patil S, Pandit P, Kumar A, Nyayanit DA, Sreelatha KH, Manjusree S, Sami H, Khan HM, Malhotra A, Dhingra K, Gadepalli R, Sudha Rani V, Singh MK, Joshi Y, Dudhmal M, Duggal N, Chabbra M, Dar L, Gawande P, Yemul J, Kalele K, Arjun R, Nagamani K, Borkakoty B, Sahoo G, Praharaj I, Dutta S, Barde P, Jaryal SC, Rawat V. Zika a Vector Borne Disease Detected in Newer States of India Amidst the COVID-19 Pandemic. Front Microbiol 2022; 13:888195. [PMID: 35756041 PMCID: PMC9226610 DOI: 10.3389/fmicb.2022.888195] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 05/02/2022] [Indexed: 11/13/2022] Open
Abstract
Background During the second wave of the COVID-19 pandemic, outbreaks of Zika were reported from Kerala, Uttar Pradesh, and Maharashtra, India in 2021. The Dengue and Chikungunya negative samples were retrospectively screened to determine the presence of the Zika virus from different geographical regions of India. Methods During May to October 2021, the clinical samples of 1475 patients, across 13 states and a union territory of India were screened and re-tested for Dengue, Chikungunya and Zika by CDC Trioplex Real time RT-PCR. The Zika rRTPCR positive samples were further screened with anti-Zika IgM and Plaque Reduction Neutralization Test. Next generation sequencing was used for further molecular characterization. Results The positivity was observed for Zika (67), Dengue (121), and Chikungunya (10) amongst screened cases. The co-infections of Dengue/Chikungunya, Dengue/Zika, and Dengue/Chikungunya/Zika were also observed. All Zika cases were symptomatic with fever (84%) and rash (78%) as major presenting symptoms. Of them, four patients had respiratory distress, one presented with seizures, and one with suspected microcephaly at birth. The Asian Lineage of Zika and all four serotypes of Dengue were found in circulation. Conclusion Our study indicates the spread of the Zika virus to several states of India and an urgent need to strengthen its surveillance.
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Affiliation(s)
- Pragya D Yadav
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | - Harmanmeet Kaur
- Indian Council of Medical Research, V. Ramalingaswami Bhawan, New Delhi, India
| | - Nivedita Gupta
- Indian Council of Medical Research, V. Ramalingaswami Bhawan, New Delhi, India
| | - Rima R Sahay
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | - Gajanan N Sapkal
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | - Anita M Shete
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | - Gururaj R Deshpande
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | | | - Triparna Majumdar
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | - Savita Patil
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | - Priyanka Pandit
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | - Abhinendra Kumar
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | - Dimpal A Nyayanit
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | - K H Sreelatha
- Virus Research and Diagnostic Laboratory, Government Medical College, Thiruvananthapuram, India
| | - S Manjusree
- Virus Research and Diagnostic Laboratory, Government Medical College, Thiruvananthapuram, India
| | - Hiba Sami
- Virus Research and Diagnostic Laboratory, Jawaharlal Nehru Medical College, Aligarh, India
| | - Haris Mazoor Khan
- Virus Research and Diagnostic Laboratory, Jawaharlal Nehru Medical College, Aligarh, India
| | - Anuradha Malhotra
- Virus Research and Diagnostic Laboratory, Government Medical College, Amritsar, India
| | - Kanwardeep Dhingra
- Virus Research and Diagnostic Laboratory, Government Medical College, Amritsar, India
| | - Ravisekhar Gadepalli
- Virus Research and Diagnostic Laboratory, All India Institute of Medical Sciences, Jodhpur, India
| | - V Sudha Rani
- Virus Research and Diagnostic Laboratory, Osmania Medical College Hyderabad, Hyderabad, India
| | - Manoj Kumar Singh
- Virus Research and Diagnostic Laboratory, Rajendra Institute of Medical Sciences, Ranchi, India
| | - Yash Joshi
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | - Manisha Dudhmal
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | - Nandini Duggal
- Virus Research and Diagnostic Laboratory, Atal Bihari Vajpayee Institute of Medical Sciences & Dr. Ram Manohar Lohia Hospital, New Delhi, India
| | - Mala Chabbra
- Virus Research and Diagnostic Laboratory, Atal Bihari Vajpayee Institute of Medical Sciences & Dr. Ram Manohar Lohia Hospital, New Delhi, India
| | - Lalit Dar
- Virus Research and Diagnostic Laboratory, All India Institute of Medical Sciences, New Delhi, India
| | - Pranita Gawande
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | - Jyoti Yemul
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | - Kaumudi Kalele
- Indian Council of Medical Research, National Institute of Virology, Pune, India
| | | | - K Nagamani
- Virus Research and Diagnostic Laboratory, Gandhi Medical College, Secunderabad, India
| | - Biswa Borkakoty
- Virus Research and Diagnostic Laboratory, ICMR-Regional Medical Research Centre, Dibrugarh, India
| | - Ganesh Sahoo
- Virus Research and Diagnostic Laboratory, ICMR-Rajendra Memorial Research Institute of Medical Sciences, Patna, India
| | - Ira Praharaj
- Virus Research and Diagnostic Laboratory, ICMR-Regional Medical Research Centre, Bhubaneswar, India
| | - Shanta Dutta
- Virus Research and Diagnostic Laboratory, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, India
| | - Pradip Barde
- Virus Research and Diagnostic Laboratory, ICMR-National Institute of Research in Tribal Health, Jabalpur, India
| | - S C Jaryal
- Virus Research and Diagnostic Laboratory, Dr. Rajendra Prasad Government Medical College, Tanda, India
| | - Vinita Rawat
- Virus Research and Diagnostic Laboratory, Government Medical College, Haldwani, India
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20
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Stramer SL, Lanteri MC, Brodsky JP, Foster GA, Krysztof DE, Groves JA, Townsend RL, Notari E, Bakkour S, Stone M, Simmons G, Spencer B, Tonnetti L, Busch MP. Mitigating the risk of transfusion-transmitted infections with vector-borne agents solely by means of pathogen reduction. Transfusion 2022; 62:1388-1398. [PMID: 35726756 PMCID: PMC9541364 DOI: 10.1111/trf.16950] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/13/2022] [Accepted: 05/13/2022] [Indexed: 12/01/2022]
Abstract
Background This study evaluated whether pathogen reduction technology (PRT) in plasma and platelets using amotosalen/ultraviolet A light (A/UVA) or in red blood cells using amustaline/glutathione (S‐303/GSH) may be used as the sole mitigation strategy preventing transfusion‐transmitted West Nile (WNV), dengue (DENV), Zika (ZIKV), and chikungunya (CHIKV) viral, and Babesia microti, Trypanosoma cruzi, and Plasmodium parasitic infections. Methods Antibody (Ab) status and pathogen loads (copies/mL) were obtained for donations from US blood donors testing nucleic acid (NAT)‐positive for WNV, DENV, ZIKV, CHIKV, and B. microti. Infectivity titers derived from pathogen loads were compared to published PRT log10 reduction factors (LRF); LRFs were also reviewed for Plasmodium and T. cruzi. The potential positive impact on donor retention following removal of deferrals from required questioning and testing for WNV, Babesia, Plasmodium, and T. cruzi was estimated for American Red Cross (ARC) donors. Results A/UVA and S‐303/GSH reduced infectivity to levels in accordance with those recognized by FDA as suitable to replace testing for all agents evaluated. If PRT replaced deferrals resulting from health history questions and/or NAT for WNV, Babesia, Plasmodium, and T. cruzi, 27,758 ARC donors could be retained allowing approximately 50,000 additional donations/year based on 1.79 donations/donor for calendar year 2019 (extrapolated to an estimated 125,000 additional donations nationally). Conclusion Pathogen loads in donations from US blood donors demonstrated that robust PRT may provide an opportunity to replace deferrals associated with donor questioning and NAT for vector‐borne agents allowing for significant donor retention and likely increased blood availability.
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Affiliation(s)
- Susan L Stramer
- American Red Cross, Scientific Affairs, Gaithersburg, Maryland, USA
| | | | | | - Gregory A Foster
- American Red Cross, Scientific Affairs, Gaithersburg, Maryland, USA
| | - David E Krysztof
- American Red Cross, Scientific Affairs, Gaithersburg, Maryland, USA
| | - Jamel A Groves
- American Red Cross, Scientific Affairs, Gaithersburg, Maryland, USA
| | | | - Edward Notari
- American Red Cross, Scientific Affairs, Rockville, Maryland, USA
| | - Sonia Bakkour
- Vitalant Research Institute, San Francisco, California, USA
| | - Mars Stone
- Vitalant Research Institute, San Francisco, California, USA
| | - Graham Simmons
- Vitalant Research Institute, San Francisco, California, USA
| | - Bryan Spencer
- American Red Cross, Scientific Affairs, Dedham, Massachusetts, USA
| | - Laura Tonnetti
- American Red Cross, Scientific Affairs, Rockville, Maryland, USA
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21
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Luria-Pérez R, Sánchez-Vargas LA, Muñoz-López P, Mellado-Sánchez G. Mucosal Vaccination: A Promising Alternative Against Flaviviruses. Front Cell Infect Microbiol 2022; 12:887729. [PMID: 35782117 PMCID: PMC9241634 DOI: 10.3389/fcimb.2022.887729] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 05/10/2022] [Indexed: 12/15/2022] Open
Abstract
The Flaviviridae are a family of positive-sense, single-stranded RNA enveloped viruses, and their members belong to a single genus, Flavivirus. Flaviviruses are found in mosquitoes and ticks; they are etiological agents of: dengue fever, Japanese encephalitis, West Nile virus infection, Zika virus infection, tick-borne encephalitis, and yellow fever, among others. Only a few flavivirus vaccines have been licensed for use in humans: yellow fever, dengue fever, Japanese encephalitis, tick-borne encephalitis, and Kyasanur forest disease. However, improvement is necessary in vaccination strategies and in understanding of the immunological mechanisms involved either in the infection or after vaccination. This is especially important in dengue, due to the immunological complexity of its four serotypes, cross-reactive responses, antibody-dependent enhancement, and immunological interference. In this context, mucosal vaccines represent a promising alternative against flaviviruses. Mucosal vaccination has several advantages, as inducing long-term protective immunity in both mucosal and parenteral tissues. It constitutes a friendly route of antigen administration because it is needle-free and allows for a variety of antigen delivery systems. This has promoted the development of several ways to stimulate immunity through the direct administration of antigens (e.g., inactivated virus, attenuated virus, subunits, and DNA), non-replicating vectors (e.g., nanoparticles, liposomes, bacterial ghosts, and defective-replication viral vectors), and replicating vectors (e.g., Salmonella enterica, Lactococcus lactis, Saccharomyces cerevisiae, and viral vectors). Because of these characteristics, mucosal vaccination has been explored for immunoprophylaxis against pathogens that enter the host through mucosae or parenteral areas. It is suitable against flaviviruses because this type of immunization can stimulate the parenteral responses required after bites from flavivirus-infected insects. This review focuses on the advantages of mucosal vaccine candidates against the most relevant flaviviruses in either humans or animals, providing supporting data on the feasibility of this administration route for future clinical trials.
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Affiliation(s)
- Rosendo Luria-Pérez
- Hospital Infantil de México Federico Gómez, Unidad de Investigación en Enfermedades Hemato-Oncológicas, Ciudad de México, Mexico
| | - Luis A. Sánchez-Vargas
- Department of Cell and Molecular Biology, Institute for Immunology and Informatics, University of Rhode Island, Providence, RI, United States
| | - Paola Muñoz-López
- Hospital Infantil de México Federico Gómez, Unidad de Investigación en Enfermedades Hemato-Oncológicas, Ciudad de México, Mexico
- Posgrado en Biomedicina y Biotecnología Molecular, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Gabriela Mellado-Sánchez
- Unidad de Desarrollo e Investigación en Bioterapéuticos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, Mexico
- Laboratorio Nacional para Servicios Especializados de Investigación, Desarrollo e Innovación (I+D+i) para Farmoquímicos y Biotecnológicos, LANSEIDI-FarBiotec-CONACyT, Ciudad de México, Mexico
- *Correspondence: Gabriela Mellado-Sánchez,
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22
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Yang W, Zhao S, Xie Y, Liu T, Kong L, Guo Y, Xie Z, Liu P, Chen XG. Armigeres subalbatus is a potential vector for Zika virus but not dengue virus. Infect Dis Poverty 2022; 11:62. [PMID: 35658950 PMCID: PMC9166152 DOI: 10.1186/s40249-022-00990-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 05/16/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Zika virus (ZIKV) and dengue virus (DENV) are closely related flaviviruses primarily transmitted by Aedes mosquitoes. Armigeres subalbatus is an emerging and widely distributed mosquito, and ZIKV has been detected and isolated from it. However, it is not clear whether Ar. subalbatus could be a vector for ZIKV and DENV or not. In this study, we investigated the infection and transmission of Ar. subalbatus to ZIKV and DENV. METHODS A line of Ar. subalbatus was isolated from Guangdong, China, and further identified by the mitochondrial cytochrome oxidase subunit 1 (COI) gene. The adults of Ar. subalbatus were fed with blood meal containing ZIKV or DENV-2. At 4, 7, 10, 14, and 21 days post-inoculation (dpi), the infections of ZIKV or DENV-2 in the midguts, ovaries and salivary glands were detected and quantified by RT-PCR and RT-qPCR. To assess the transmissibility, suckling mice were exposed to bites of ZIKV-infected mosquitoes, and ZIKV was detected in brain tissue by RT-qPCR and plaque assays. Furthermore, the larvae of Ar. subalbatus were reared in artificial urine containing ZIKV or DENV-2. The infection rates and viral titers of larvae and adults were analyzed by RT-PCR and RT-qPCR, and the viral distribution in larval tissues was observed by immunohistochemistry. Chi-square test and one-way ANOVA analysis were used for assessing the infection rate and viral titer in varied tissues and different time points, respectively. RESULTS Following oral inoculation, ZIKV but not DENV-2 could be detected in Ar. subalbatus midguts at 4 dpi, ovaries at 7 dpi and salivary glands at 10 dpi. The highest infection rate (IR) of ZIKV was 27.8% in midgut at 7 dpi, 9.7% in ovary and 5.6% in salivary gland at 21 dpi. Eight days after being bitten by ZIKV-positive mosquitoes, ZIKV was detected in three brain tissues out of four suckling mice exposed to bites. ZIKV could be detected in the larvae reared in artificial urine contained ZIKV at a high concentration of 105 pfu/ml and various tissues of adults with a low infection rate (0.70-1.35%). ZIKV could be observed in anal papillae and midgut of larvae at 4 dpi under laboratory conditions. CONCLUSIONS ZIKV but not DENV-2 can infect Ar. subalbatus by blood meal and artificial urine, and the infected mosquitoes can transmit ZIKV to suckling mice by bite. From these findings, we can conclude that the Ar. subalbatus isolated from Guangdong province, China, is a potential vector for ZIKV and should therefore be considered in vector control programs to prevent and control of Zika virus disease.
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Affiliation(s)
- Wenqiang Yang
- Department of Pathogen Biology, Institute of Tropical Medicine, School of Public Health, Southern Medical University, Guangzhou, China
| | - Siyu Zhao
- Department of Pathogen Biology, Institute of Tropical Medicine, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yugu Xie
- Department of Pathogen Biology, Institute of Tropical Medicine, School of Public Health, Southern Medical University, Guangzhou, China
| | - Tong Liu
- Department of Pathogen Biology, Institute of Tropical Medicine, School of Public Health, Southern Medical University, Guangzhou, China
| | - Ling Kong
- Department of Pathogen Biology, Institute of Tropical Medicine, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yijia Guo
- Department of Pathogen Biology, Institute of Tropical Medicine, School of Public Health, Southern Medical University, Guangzhou, China
| | - Zhensheng Xie
- Department of Pathogen Biology, Institute of Tropical Medicine, School of Public Health, Southern Medical University, Guangzhou, China
| | - Peiwen Liu
- Department of Pathogen Biology, Institute of Tropical Medicine, School of Public Health, Southern Medical University, Guangzhou, China
| | - Xiao-Guang Chen
- Department of Pathogen Biology, Institute of Tropical Medicine, School of Public Health, Southern Medical University, Guangzhou, China
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23
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Rong H, Qi M, Pan J, Sun Y, Gao J, Zhang X, Li W, Zhang B, Zhang XE, Cui Z. Self-Assembling Nanovaccine Confers Complete Protection Against Zika Virus Without Causing Antibody-Dependent Enhancement. Front Immunol 2022; 13:905431. [PMID: 35615356 PMCID: PMC9124840 DOI: 10.3389/fimmu.2022.905431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 04/14/2022] [Indexed: 01/20/2023] Open
Abstract
The Zika virus (ZIKV) epidemic poses a substantial threat to the public, and the development of safe and effective vaccines is a demanding challenge. In this study, we constructed a kind of self-assembling nanovaccine which confers complete protection against ZIKV infection. The ZIKV envelop protein domain III (zEDIII) was presented on recombinant human heavy chain ferritin (rHF) to form the zEDIII-rHF nanoparticle. Immunization of mice with zEDIII-rHF nanoparticle in the absence of an adjuvant induced robust humoral and cellular immune responses. zEDIII-rHF vaccination conferred complete protection against lethal infection with ZIKV and eliminated pathological symptoms in the brain. Importantly, the zEDIII-rHF nanovaccine induced immune response did not cross-react with dengue virus-2, overcoming the antibody-dependent enhancement (ADE) problem that is a safety concern for ZIKV vaccine development. Our constructed zEDIII-rHF nanovaccine, with superior protective performance and avoidance of ADE, provides an effective and safe vaccine candidate against ZIKV.
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Affiliation(s)
- Heng Rong
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Mi Qi
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jingdi Pan
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yuhan Sun
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jiawang Gao
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiaowei Zhang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Wei Li
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Bo Zhang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Xian-En Zhang
- Faculty of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Zongqiang Cui
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
- *Correspondence: Zongqiang Cui,
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Kapuganti SK, Bhardwaj A, Kumar P, Bhardwaj T, Nayak N, Uversky VN, Giri R. Role of structural disorder in the multi-functionality of flavivirus proteins. Expert Rev Proteomics 2022; 19:183-196. [PMID: 35655146 DOI: 10.1080/14789450.2022.2085563] [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: 01/07/2023]
Abstract
INTRODUCTION The life cycle of a virus involves interacting with the host cell, entry, hijacking host machinery for viral replication, evading the host's immune system, and releasing mature virions. However, viruses, being small in size, can only harbor a genome large enough to code for the minimal number of proteins required for the replication and maturation of the virions. As a result, many viral proteins are multifunctional machines that do not directly obey the classic structure-function paradigm. Often, such multifunctionality is rooted in intrinsic disorder that allows viral proteins to interact with various cellular factors and remain functional in the hostile environment of different cellular compartments. AREAS COVERED This report covers the classification of flaviviruses, their proteome organization, and the prevalence of intrinsic disorder in the proteomes of different flaviviruses. Further, we have summarized the speculations made about the apparent roles of intrinsic disorder in the observed multifunctionality of flaviviral proteins. EXPERT OPINION Small sizes of viral genomes impose multifunctionality on their proteins, which is dependent on the excessive usage of intrinsic disorder. In fact, intrinsic disorder serves as a universal functional tool, weapon, and armor of viruses and clearly plays an important role in their functionality and evolution.
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Affiliation(s)
| | - Aparna Bhardwaj
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - Prateek Kumar
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - Taniya Bhardwaj
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - Namyashree Nayak
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - Vladimir N Uversky
- Department of Molecular Medicine and Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Rajanish Giri
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
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25
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Botwina P, Obłoza M, Zatorska-Płachta M, Kamiński K, Mizusaki M, Yusa SI, Szczubiałka K, Pyrc K, Nowakowska M. Self-Organized Nanoparticles of Random and Block Copolymers of Sodium 2-(acrylamido)-2-methyl-1-propanesulfonate and Sodium 11-(acrylamido)undecanoate as Safe and Effective Zika Virus Inhibitors. Pharmaceutics 2022; 14:pharmaceutics14020309. [PMID: 35214042 PMCID: PMC8876367 DOI: 10.3390/pharmaceutics14020309] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/22/2022] [Accepted: 01/24/2022] [Indexed: 02/04/2023] Open
Abstract
A series of anionic homopolymers, poly(sodium 2-(acrylamido)-2-methyl-1-propanesulfonate) (PAMPS) and amphiphilic copolymers of AMPS and sodium 11-(acrylamido)undecanoate (AaU), both block (PAMPS75-b-PAaUn), and random (P(AMPSm-co-AaUn)), were synthesized and their antiviral activity against Zika virus (ZIKV) was evaluated. Interestingly, while the homopolymers showed limited antiviral activity, the copolymers are very efficient antivirals. This observation was explained considering that under the conditions relevant to the biological experiments (pH 7.4 PBS buffer) the macromolecules of these copolymers exist as negatively charged (zeta potential about −25 mV) nanoparticles (4–12 nm) due to their self-organization. They inhibit the ZIKV replication cycle by binding to the cell surface and thereby blocking virus attachment to host cells. Considering good solubility in aqueous media, low toxicity, and high selectivity index (SI) of the PAMPS-b-PAaU copolymers, they can be considered promising agents against ZIKV infections.
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Affiliation(s)
- Pawel Botwina
- Microbiology Department, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland;
- Virogenetics Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
| | - Magdalena Obłoza
- Department of Physical Chemistry, Faculty of Chemistry, Jagiellonian University, 30-387 Krakow, Poland; (M.O.); (M.Z.-P.); (K.K.); (K.S.)
| | - Maria Zatorska-Płachta
- Department of Physical Chemistry, Faculty of Chemistry, Jagiellonian University, 30-387 Krakow, Poland; (M.O.); (M.Z.-P.); (K.K.); (K.S.)
| | - Kamil Kamiński
- Department of Physical Chemistry, Faculty of Chemistry, Jagiellonian University, 30-387 Krakow, Poland; (M.O.); (M.Z.-P.); (K.K.); (K.S.)
| | - Masanobu Mizusaki
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji 671-2280, Japan; (M.M.); (S.-I.Y.)
| | - Shin-Ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji 671-2280, Japan; (M.M.); (S.-I.Y.)
| | - Krzysztof Szczubiałka
- Department of Physical Chemistry, Faculty of Chemistry, Jagiellonian University, 30-387 Krakow, Poland; (M.O.); (M.Z.-P.); (K.K.); (K.S.)
| | - Krzysztof Pyrc
- Virogenetics Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
- Correspondence: (K.P.); (M.N.)
| | - Maria Nowakowska
- Department of Physical Chemistry, Faculty of Chemistry, Jagiellonian University, 30-387 Krakow, Poland; (M.O.); (M.Z.-P.); (K.K.); (K.S.)
- Correspondence: (K.P.); (M.N.)
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Fachini RM, Fontão-Wendel R, Achkar R, Scuracchio P, Brito M, Amaral M, Wendel S. The 4-Year Experience with Implementation and Routine Use of Pathogen Reduction in a Brazilian Hospital. Pathogens 2021; 10:pathogens10111499. [PMID: 34832654 PMCID: PMC8621808 DOI: 10.3390/pathogens10111499] [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: 10/25/2021] [Revised: 11/09/2021] [Accepted: 11/11/2021] [Indexed: 11/16/2022] Open
Abstract
(1) Background: We reviewed the logistics of the implementation of pathogen reduction (PR) using the INTERCEPT Blood System™ for platelets and the experience with routine use and clinical outcomes in the patient population at the Sírio-Libanês Hospital of São Paulo, Brazil. (2) Methods: Platelet concentrate (PC), including pathogen reduced (PR-PC) production, inventory management, discard rates, blood utilization, and clinical outcomes were analyzed over the 40 months before and after PR implementation. Age distribution and wastage rates were compared over the 10 months before and after approval for PR-PC to be stored for up to seven days. (3) Results: A 100% PR-PC inventory was achieved by increasing double apheresis collections and production of double doses using pools of two single apheresis units. Discard rates decreased from 6% to 3% after PR implementation and further decreased to 1.2% after seven-day storage extension for PR-PCs. The blood utilization remained stable, with no increase in component utilization. A significant decrease in adverse transfusion events was observed after the PR implementation. (4) Conclusion: Our experience demonstrates the feasibility for Brazilian blood centers to achieve a 100% PR-PC inventory. All patients at our hospital received PR-PC and showed no increase in blood component utilization and decreased rates of adverse transfusion reactions.
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27
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Carpentier KS, Sheridan RM, Lucas CJ, Davenport BJ, Li FS, Lucas ED, McCarthy MK, Reynoso GV, May NA, Tamburini BAJ, Hesselberth JR, Hickman HD, Morrison TE. MARCO + lymphatic endothelial cells sequester arthritogenic alphaviruses to limit viremia and viral dissemination. EMBO J 2021; 40:e108966. [PMID: 34618370 PMCID: PMC8591538 DOI: 10.15252/embj.2021108966] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 02/02/2023] Open
Abstract
Viremia in the vertebrate host is a major determinant of arboviral reservoir competency, transmission efficiency, and disease severity. However, immune mechanisms that control arboviral viremia are poorly defined. Here, we identify critical roles for the scavenger receptor MARCO in controlling viremia during arthritogenic alphavirus infections in mice. Following subcutaneous inoculation, arthritogenic alphavirus particles drain via the lymph and are rapidly captured by MARCO+ lymphatic endothelial cells (LECs) in the draining lymph node (dLN), limiting viral spread to the bloodstream. Upon reaching the bloodstream, alphavirus particles are cleared from the circulation by MARCO-expressing Kupffer cells in the liver, limiting viremia and further viral dissemination. MARCO-mediated accumulation of alphavirus particles in the draining lymph node and liver is an important host defense mechanism as viremia and viral tissue burdens are elevated in MARCO-/- mice and disease is more severe. In contrast to prior studies implicating a key role for lymph node macrophages in limiting viral dissemination, these findings exemplify a previously unrecognized arbovirus-scavenging role for lymphatic endothelial cells and improve our mechanistic understanding of viremia control during arthritogenic alphavirus infection.
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Affiliation(s)
- Kathryn S Carpentier
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Ryan M Sheridan
- RNA Bioscience InitiativeUniversity of Colorado School of MedicineAuroraCOUSA
| | - Cormac J Lucas
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Bennett J Davenport
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Frances S Li
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Erin D Lucas
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Mary K McCarthy
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Glennys V Reynoso
- Viral Immunity and Pathogenesis UnitLaboratory of Clinical Microbiology and ImmunologyNational Institutes of Allergy and Infectious DiseasesNIHBethesdaMDUSA
| | - Nicholas A May
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Beth A J Tamburini
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
- Division of Gastroenterology and HepatologyDepartment of MedicineUniversity of Colorado Anschutz Medical Campus School of MedicineAuroraCOUSA
| | - Jay R Hesselberth
- RNA Bioscience InitiativeUniversity of Colorado School of MedicineAuroraCOUSA
- Department of Biochemistry and Molecular GeneticsUniversity of Colorado School of MedicineAuroraCOUSA
| | - Heather D Hickman
- Viral Immunity and Pathogenesis UnitLaboratory of Clinical Microbiology and ImmunologyNational Institutes of Allergy and Infectious DiseasesNIHBethesdaMDUSA
| | - Thomas E Morrison
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
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Leu-to-Phe substitution at prM 146 decreases the growth ability of Zika virus and partially reduces its pathogenicity in mice. Sci Rep 2021; 11:19635. [PMID: 34608212 PMCID: PMC8490429 DOI: 10.1038/s41598-021-99086-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 09/16/2021] [Indexed: 12/24/2022] Open
Abstract
Zika virus (ZIKV) is a mosquito-borne flavivirus that causes febrile illness. The recent spread of ZIKV from Asia to the Americas via the Pacific region has revealed unprecedented features of ZIKV, including transplacental congenital infection causing microcephaly. Amino acid changes have been hypothesized to underlie the spread and novel features of American ZIKV strains; however, the relationship between genetic changes and the epidemic remains controversial. A comparison of the characteristics of a Southeast Asian strain (NIID123) and an American strain (PRVABC59) revealed that the latter had a higher replication ability in cultured cells and higher virulence in mice. In this study, we aimed to identify the genetic region of ZIKV responsible for these different characteristics using reverse genetics. A chimeric NIID123 strain in which the E protein was replaced with that of PRVABC59 showed a lower growth ability than the recombinant wild-type strain. Adaptation of the chimeric NIID123 to Vero cells induced a Phe-to-Leu amino acid substitution at position 146 of the prM protein; PRVABC59 also has Leu at this position. Leu at this position was found to be responsible for the viral replication ability and partially, for the pathogenicity in mouse testes.
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29
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Sun H, Binder RA, Dickens B, de Sessions PF, Rabaa MA, Ho EXP, Cook AR, Carrillo FB, Monterrey JC, Kuan G, Balmaseda A, Ooi EE, Harris E, Sessions OM. Viral genome-based Zika virus transmission dynamics in a paediatric cohort during the 2016 Nicaragua epidemic. EBioMedicine 2021; 72:103596. [PMID: 34627081 PMCID: PMC8511802 DOI: 10.1016/j.ebiom.2021.103596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 08/02/2021] [Accepted: 09/09/2021] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Nicaragua experienced a large Zika epidemic in 2016, with up to 50% of the population in Managua infected. With the domesticated Aedes aegypti mosquito as its vector, it is widely assumed that Zika virus transmission occurs within the household and/or via human mobility. We investigated these assumptions by using viral genomes to trace Zika transmission spatially. METHODS We analysed serum samples from 119 paediatric Zika cases participating in the long-standing Paediatric Dengue Cohort Study in Managua, which was expanded to include Zika in 2015. An optimal spanning directed tree was constructed by minimizing the differences in viral sequence diversity composition between patient nodes, where low-frequency variants were used to increase the resolution of the inferred Zika outbreak dynamics. FINDINGS Out of the 18 houses where pairwise difference in sample collection dates among all the household members was within 30 days, we only found two where viruses from individuals within the same household were up to 10th-most closely linked to each other genetically. We also identified a substantial number of transmission events involving long geographical distances (n=30), as well as potential super-spreading events in the estimated transmission tree. INTERPRETATION Our finding highlights that community transmission, often involving long geographical distances, played a much more important role in epidemic spread than within-household transmission. FUNDING This study was supported by an NUS startup grant (OMS) and grants R01 AI099631 (AB), P01 AI106695 (EH), P01 AI106695-03S1 (FB), and U19 AI118610 (EH) from the US National Institutes of Health.
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Affiliation(s)
- Haoyang Sun
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore
| | - Raquel A. Binder
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, CA, USA
- Sustainable Sciences Institute, Managua, Nicaragua
| | - Borame Dickens
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore
| | | | - Maia A. Rabaa
- The Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
- Centre for Tropical Medicine, Nuffield Department of Medicine, Oxford University, Oxford, UK
| | | | - Alex R Cook
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore
| | - Fausto Bustos Carrillo
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, CA, USA
- Sustainable Sciences Institute, Managua, Nicaragua
| | | | - Guillermina Kuan
- Sustainable Sciences Institute, Managua, Nicaragua
- Health Center Sócrates Flores Vivas, Ministry of Health, Managua, Nicaragua
| | - Angel Balmaseda
- Sustainable Sciences Institute, Managua, Nicaragua
- Laboratorio Nacional de Virología, Centro Nacional de Diagnóstico y Referencia, Ministry of Health, Managua, Nicaragua
| | - Eng Eong Ooi
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore
- Duke-NUS Medical School, Singapore, Singapore
| | - Eva Harris
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, CA, USA
| | - October M. Sessions
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore
- Duke-NUS Medical School, Singapore, Singapore
- Department of Pharmacy, National University of Singapore, Singapore
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30
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In Vitro Inhibition of Zika Virus Replication with Amantadine and Rimantadine Hydrochlorides. MICROBIOLOGY RESEARCH 2021. [DOI: 10.3390/microbiolres12030052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Zika virus (ZIKV) is a mosquito-borne flavivirus in which human infection became relevant during recent outbreaks in Latin America due to its unrecognized association with fetal neurological disorders. Currently, there are no approved effective antivirals or vaccines for the treatment or prevention of ZIKV infections. Amantadine and rimantadine are approved antivirals used against susceptible influenza A virus infections that have been shown to have antiviral activity against other viruses, such as dengue virus (DENV). Here, we report the in vitro effectiveness of both amantadine and rimantadine hydrochlorides against ZIKV replication, resulting in a dose-dependent reduction in viral titers of a ZIKV clinical isolate and two different ZIKV reference strains. Additionally, we demonstrate similar in vitro antiviral activity of these drugs against DENV-1 and yellow fever virus (YFV), although at higher drug concentrations for the latter. ZIKV replication was inhibited at drug concentrations well below cytotoxic levels of both compounds, as denoted by the high selectivity indexes obtained with the tested strains. Further work is absolutely needed to determine the potential clinical use of these antivirals against ZIKV infections, but our results suggest the existence of a highly conserved mechanism across flavivirus, susceptible to be blocked by modified more specific adamantane compounds.
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31
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Roldán JS, Cassola A, Castillo DS. Development of a novel NS1 competitive enzyme-linked immunosorbent assay for the early detection of Zika virus infection. PLoS One 2021; 16:e0256220. [PMID: 34403457 PMCID: PMC8370630 DOI: 10.1371/journal.pone.0256220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 08/02/2021] [Indexed: 11/18/2022] Open
Abstract
Zika virus (ZIKV) is a flavivirus that has emerged as a global health threat after the 2015 outbreak in the Americas, where devastating congenital defects were documented. There are currently no vaccines to prevent ZIKV infections nor commercially available clinical diagnostic tests demonstrated to identify ZIKV without cross-reactive interference of related flaviviruses. Early diagnosis is critical when treating symptomatic patients and in preventing ZIKV transmission. In this context, the development of sensitive and accurate diagnostic methods are urgently needed for the detection of ZIKV acute infection. The aim of this study consisted of obtaining monoclonal antibodies (mAbs) against denatured monomeric ZIKV Nonstructural protein 1 (ZNS1), a useful diagnostic marker for flavivirus early detection, in order to develop a highly specific and sensitive ZNS1 indirect competitive ELISA (icELISA). The production of hybridomas secreting ZNS1 mAbs was carried out through immunizations with denatured monomeric ZNS1. We selected 1F5 and 6E2 hybridoma clones, which recognized the heat-denatured ZNS1 hexameric form by indirect ELISA. Cross-reaction studies indicated that these mAbs specifically bind to a ZNS1 linear epitope, and that they do not cross-react with the NS1 protein from other related flaviviruses. The 1F5 mAb enabled the development of a sensitive and reproducible icELISA to detect and quantify small amounts of ZNS1 disease marker in heat-denatured human sera. Here, we establish a reliable 1F5 based-icELISA that constitutes a promising diagnostic tool for control strategies and the prevention of ZIKV propagation.
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MESH Headings
- Animals
- Antibodies, Monoclonal/biosynthesis
- Antibodies, Monoclonal/chemistry
- Antibodies, Monoclonal/isolation & purification
- Antibodies, Viral/biosynthesis
- Antibodies, Viral/chemistry
- Antibodies, Viral/isolation & purification
- Antigens, Viral/administration & dosage
- Antigens, Viral/genetics
- Antigens, Viral/immunology
- Binding, Competitive
- Cloning, Molecular
- Early Diagnosis
- Enzyme-Linked Immunosorbent Assay/methods
- Enzyme-Linked Immunosorbent Assay/standards
- Escherichia coli/genetics
- Escherichia coli/metabolism
- Gene Expression
- HEK293 Cells
- Humans
- Hybridomas/chemistry
- Hybridomas/immunology
- Male
- Mice
- Mice, Inbred BALB C
- Protein Multimerization
- Recombinant Proteins/administration & dosage
- Recombinant Proteins/genetics
- Recombinant Proteins/immunology
- Reproducibility of Results
- Sensitivity and Specificity
- Viral Nonstructural Proteins/administration & dosage
- Viral Nonstructural Proteins/genetics
- Viral Nonstructural Proteins/immunology
- Zika Virus/genetics
- Zika Virus/immunology
- Zika Virus Infection/diagnosis
- Zika Virus Infection/immunology
- Zika Virus Infection/virology
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Affiliation(s)
- Julieta S. Roldán
- Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo A. Ugalde" (IIBIO), Universidad Nacional de San Martín (UNSAM), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), San Martín, Buenos Aires, Argentina
| | - Alejandro Cassola
- Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo A. Ugalde" (IIBIO), Universidad Nacional de San Martín (UNSAM), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), San Martín, Buenos Aires, Argentina
| | - Daniela S. Castillo
- Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo A. Ugalde" (IIBIO), Universidad Nacional de San Martín (UNSAM), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), San Martín, Buenos Aires, Argentina
- * E-mail:
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32
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Sun J, Zheng Z, Li M, Liu Z, Su X, Jin X. Development of a novel ZIKV vaccine comprised of immunodominant CD4+ and CD8+ T cell epitopes identified through comprehensive epitope mapping in Zika virus infected mice. Vaccine 2021; 39:5173-5186. [PMID: 34353682 DOI: 10.1016/j.vaccine.2021.07.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 07/10/2021] [Accepted: 07/13/2021] [Indexed: 11/28/2022]
Abstract
Zika virus (ZIKV) caused over two million human infections in more than 80 countries around 2015-2016. Current vaccines under development are mostly focused on inducing antibodies that despite capable of inhibiting the virus, may have the potential to trigger antibody dependent enhancement (ADE). T cell vaccines that do not induce antibodies targeting viral surface will unlikely cause ADE, but be capable of potentiating the effectiveness of an antibody-inducing vaccine. To develop such a protective T cell vaccine, we first examined the repertoire of antigen-specific T cells in immunocompetent mice that have been transiently infected by ZIKV. Through epitope mapping using 427 overlapping peptides spanning the entire length of ZIKV polyprotein, we discovered 27 immunodominant epitopes scattered throughout the virus on C, E, NS1-NS5 proteins. Among them, 8 were confirmed as CD4+ T cell epitopes, and 16 as CD8+ T cell epitopes, while 3 for both T cell subsets. From these 27 newly identified epitopes, the top 10 epitopes were selected to formulate three T cell vaccines comprised of either CD4+ T cell epitopes, or CD8+ T cell epitopes, or a mixture of both. Immunization with these T cell epitopes induced T cell-mediated cytotoxicity and cytokine production, and conferred varying degrees of protection against ZIKV challenge. Moreover, these new T cell vaccines also improved the protective efficacy of a neutralizing antibody-inducing recombinant E80 protein vaccine. Together, our results provided additional evidence in support of the protective role of ZIKV-specific CD4+ and CD8+ T cells, and laid foundation for future development of T cell vaccines for ZIKV.
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Affiliation(s)
- Jin Sun
- The Center for Microbes, Development and Health, CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Zhihang Zheng
- Shanghai Public Health Clinical Center, Fudan University, Shanghai 201058, China
| | - Min Li
- Shanghai Public Health Clinical Center, Fudan University, Shanghai 201058, China
| | - Zhihua Liu
- Shanghai Public Health Clinical Center, Fudan University, Shanghai 201058, China
| | - Xiao Su
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Xia Jin
- Shanghai Public Health Clinical Center, Fudan University, Shanghai 201058, China.
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Pomar L, Lambert V, Matheus S, Pomar C, Hcini N, Carles G, Rousset D, Vouga M, Panchaud A, Baud D. Prolonged Maternal Zika Viremia as a Marker of Adverse Perinatal Outcomes. Emerg Infect Dis 2021; 27:490-498. [PMID: 33496246 PMCID: PMC7853546 DOI: 10.3201/eid2702.200684] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Whether prolonged maternal viremia after Zika virus infection represents a risk factor for maternal–fetal transmission and subsequent adverse outcomes remains unclear. In this prospective cohort study in French Guiana, we enrolled Zika virus–infected pregnant women with a positive PCR result at inclusion and noninfected pregnant women; both groups underwent serologic testing in each trimester and at delivery during January–July 2016. Prolonged viremia was defined as ongoing virus detection >30 days postinfection. Adverse outcomes (fetal loss or neurologic anomalies) were more common in fetuses and neonates from mothers with prolonged viremia (40.0%) compared with those from infected mothers without prolonged viremia (5.3%, adjusted relative risk [aRR] 7.2 [95% CI 0.9–57.6]) or those from noninfected mothers (6.6%, aRR 6.7 [95% CI 3.0–15.1]). Congenital infections were confirmed more often in fetuses and neonates from mothers with prolonged viremia compared with the other 2 groups (60.0% vs. 26.3% vs. 0.0%, aRR 2.3 [95% CI 0.9–5.5]).
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34
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A purified inactivated vaccine derived from Vero cell-adapted zika virus elicits protection in mice. Virology 2021; 560:124-130. [PMID: 34087565 DOI: 10.1016/j.virol.2021.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 04/14/2021] [Accepted: 05/07/2021] [Indexed: 11/21/2022]
Abstract
The Zika virus (ZIKV) outbreak in 2015-2016 raised public health concerns and created a pressing need for vaccine development. However, no vaccine has been developed and most of the ones under development use a single serotype of ZIKV. In this study, we established a Vero cell-adapted ZIKV strain (GMZ-002) and developed a purified inactivated virus (PIV) vaccine. GMZ-002 presented significantly increased productivity in Vero cells, and IFNAR1-blocked C57BL/6 mice administered two doses of the PIV were fully protected against lethal challenge. Vaccine efficacy was illustrated by the high level of serum neutralizing antibodies and strong innate immune response, along with an absence of detectable viremia in vaccinated mice. Furthermore, anti-sera neutralized both African and Asian genetic lineages of the virus in vitro. Our results suggest that GMZ-002 PIV elicited robust and persistent protective immunity, and therefore represents a promising vaccine candidate for ZIKV.
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35
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Fall FK, Laroche M, Bossin H, Musso D, Parola P. Performance of MALDI-TOF Mass Spectrometry to Determine the Sex of Mosquitoes and Identify Specific Colonies from French Polynesia. Am J Trop Med Hyg 2021; 104:1907-1916. [PMID: 33755583 PMCID: PMC8103438 DOI: 10.4269/ajtmh.20-0031] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 01/19/2021] [Indexed: 12/25/2022] Open
Abstract
Mosquitoes are the main arthropod vectors of human pathogens. The current methods for mosquito identification include morphological and molecular methods. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), now routinely used for bacterial identification, has recently emerged in the field of entomology. The aim of this study was to use MALDI-TOF MS to identify mosquito colonies from French Polynesia. Five hundred specimens from French Polynesia belonging to three species, Aedes aegypti, Aedes polynesiensis, and Culex quinquefasciatus, were included in the study. Testing the legs of these mosquitoes by MALDI-TOF MS revealed a 100% correct identification of all specimens at the species level. The MALDI-TOF MS profiles obtained allowed differentiation of male from female mosquitoes and the specific identification of female mosquito colonies of the same species but different geographic origin.
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Affiliation(s)
- Fatou Kiné Fall
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France;,IHU Méditerranée Infection, Marseille, France;,Campus International IRD-UCAD de l’IRD, Dakar, Senegal
| | - Maureen Laroche
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France;,IHU Méditerranée Infection, Marseille, France
| | - Hervé Bossin
- Medical Entomology Laboratory, Institut Louis Malardé, Tahiti, French Polynesia
| | - Didier Musso
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France;,SELAS Eurofins Labazur Guyane, Cayenne, French Guiana
| | - Philippe Parola
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France;,IHU Méditerranée Infection, Marseille, France;,Address correspondence to Philippe Parola, VITROME, IHU Méditerranée Infection, 19-21 Blvd., Jean Moulin, Marseille 13005, France. E-mail:
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36
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Li Z, Wang J, Cheng X, Hu H, Guo C, Huang J, Chen Z, Lu J. The worldwide seroprevalence of DENV, CHIKV and ZIKV infection: A systematic review and meta-analysis. PLoS Negl Trop Dis 2021; 15:e0009337. [PMID: 33909610 PMCID: PMC8109817 DOI: 10.1371/journal.pntd.0009337] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 05/10/2021] [Accepted: 03/28/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND As the three major arthropod-borne viruses, dengue virus (DENV), chikungunya virus (CHIKV), and zika virus (ZIKV) are posing a growing threat to global public health and socioeconomic development. Our study aimed to systematically review the global seroprevalences of these arboviruses from existing publications. METHODS Articles published between Jan 01, 2000 and Dec 31, 2019 in the databases of Embase, Pubmed and Web of Science were searched and collected. Countries or areas with known local presence of Aedes vector mosquitoes were included. Random effects model was utilized to estimate the pooled seroprevalences and the proportion of inapparent infection. RESULTS Out of 1375, a total of 133 articles involving 176,001 subjects were included for our analysis. The pooled seroprevalences of DENV, CHIKV and ZIKV were 38%, 25% and 18%, respectively; and their corresponding proportions of inapparent infections were 80%, 40% and 50%. The South-East Asia Region had the highest seroprevalences of DENV and CHIKV, while the Region of the Americas had the highest seroprevalence of ZIKV. The seroprevalences of DENV and CHIKV were similar when comparing developed and developing countries, urban and rural areas, or among different populations. In addition, we observed a decreased global seroprevalences in the new decade (2010-2019) comparing to the decade before (2000-2009) for CHIKV. For ZIKV, the positive rates tested with the nucleic acid detection method were lower than those tested with the antibody detection method. Lastly, numerous cases of dual seropositivity for CHIKV and DENV were reported. CONCLUSIONS Our results revealed a varied prevalence of arbovirus infections in different geographical regions and countries, and the inapparent infection accounted an unneglected portion of infections that requires more attention. This study will shed lights on our understanding of the true burden of arbovirus infections and promote appropriate vaccination in the future.
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Affiliation(s)
- Zhihui Li
- School of Public Health, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
| | - Jin Wang
- School of Public Health, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
| | - Xiaomin Cheng
- School of Public Health, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
| | - Huan Hu
- School of Public Health, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
| | - Cheng Guo
- Center for Infection and Immunity, Mailman School of Public Health, Columbia University, New York City, New York, United States of America
| | - Jingyi Huang
- Songgang People’s Hospital of Bao’an District, Shenzhen, Guangdong Province, China
| | - Zeliang Chen
- School of Public Health, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
- * E-mail: (ZC); (JL)
| | - Jiahai Lu
- School of Public Health, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
- * E-mail: (ZC); (JL)
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37
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Ryan FJ, Carr JM, Furtado JM, Ma Y, Ashander LM, Simões M, Oliver GF, Granado GB, Dawson AC, Michael MZ, Appukuttan B, Lynn DJ, Smith JR. Zika Virus Infection of Human Iris Pigment Epithelial Cells. Front Immunol 2021; 12:644153. [PMID: 33968035 PMCID: PMC8100333 DOI: 10.3389/fimmu.2021.644153] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 03/02/2021] [Indexed: 12/13/2022] Open
Abstract
During recent Zika epidemics, adults infected with Zika virus (ZIKV) have developed organ-specific inflammatory complications. The most serious Zika-associated inflammatory eye disease is uveitis, which is commonly anterior in type, affecting both eyes and responding to corticosteroid eye drops. Mechanisms of Zika-associated anterior uveitis are unknown, but ZIKV has been identified in the aqueous humor of affected individuals. The iris pigment epithelium is a target cell population in viral anterior uveitis, and it acts to maintain immune privilege within the anterior eye. Interactions between ZIKV and human iris pigment epithelial cells were investigated with infectivity assays and RNA-sequencing. Primary cell isolates were prepared from eyes of 20 cadaveric donors, and infected for 24 hours with PRVABC59 strain ZIKV or incubated uninfected as control. Cytoimmunofluorescence, RT-qPCR on total cellular RNA, and focus-forming assays of culture supernatant showed cell isolates were permissive to infection, and supported replication and release of infectious ZIKV. To explore molecular responses of cell isolates to ZIKV infection at the whole transcriptome level, RNA was sequenced on the Illumina NextSeq 500 platform, and results were aligned to the human GRCh38 genome. Multidimensional scaling showed clear separation between transcriptomes of infected and uninfected cell isolates. Differential expression analysis indicated a vigorous molecular response of the cell to ZIKV: 7,935 genes were differentially expressed between ZIKV-infected and uninfected cells (FDR < 0.05), and 99% of 613 genes that changed at least two-fold were up-regulated. Reactome and KEGG pathway and Gene Ontology enrichment analyses indicated strong activation of viral recognition and defense, in addition to biosynthesis processes. A CHAT network included 6275 molecular nodes and 24 contextual hubs in the cell response to ZIKV infection. Receptor-interacting serine/threonine kinase 1 (RIPK1) was the most significantly connected contextual hub. Correlation of gene expression with read counts assigned to the ZIKV genome identified a negative correlation between interferon signaling and viral load across isolates. This work represents the first investigation of mechanisms of Zika-associated anterior uveitis using an in vitro human cell model. The results suggest the iris pigment epithelium mounts a molecular response that limits intraocular pathology in most individuals.
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Affiliation(s)
- Feargal J Ryan
- Precision Medicine Theme, South Australian Health & Medical Research Institute, Adelaide, SA, Australia
| | - Jillian M Carr
- Flinders University College of Medicine and Public Health, Bedford Park, SA, Australia
| | - João M Furtado
- Ophthalmology Division, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Yuefang Ma
- Flinders University College of Medicine and Public Health, Bedford Park, SA, Australia
| | - Liam M Ashander
- Flinders University College of Medicine and Public Health, Bedford Park, SA, Australia
| | - Milena Simões
- Ophthalmology Division, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Genevieve F Oliver
- Flinders University College of Medicine and Public Health, Bedford Park, SA, Australia
| | - G Bracho Granado
- Flinders University College of Medicine and Public Health, Bedford Park, SA, Australia
| | - Abby C Dawson
- Flinders University College of Medicine and Public Health, Bedford Park, SA, Australia
| | - Michael Z Michael
- Flinders University College of Medicine and Public Health, Bedford Park, SA, Australia
| | - Binoy Appukuttan
- Flinders University College of Medicine and Public Health, Bedford Park, SA, Australia
| | - David J Lynn
- Precision Medicine Theme, South Australian Health & Medical Research Institute, Adelaide, SA, Australia.,Flinders University College of Medicine and Public Health, Bedford Park, SA, Australia
| | - Justine R Smith
- Precision Medicine Theme, South Australian Health & Medical Research Institute, Adelaide, SA, Australia.,Flinders University College of Medicine and Public Health, Bedford Park, SA, Australia
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38
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Morales I, Rosenberger KD, Magalhaes T, Morais CNL, Braga C, Marques ETA, Calvet GA, Damasceno L, Brasil P, Bispo de Filippis AM, Tami A, Bethencourt S, Alvarez M, Martínez PA, Guzman MG, Souza Benevides B, Caprara A, Quyen NTH, Simmons CP, Wills B, de Lamballerie X, Drexler JF, Jaenisch T. Diagnostic performance of anti-Zika virus IgM, IgAM and IgG ELISAs during co-circulation of Zika, dengue, and chikungunya viruses in Brazil and Venezuela. PLoS Negl Trop Dis 2021; 15:e0009336. [PMID: 33872309 PMCID: PMC8084345 DOI: 10.1371/journal.pntd.0009336] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 04/29/2021] [Accepted: 03/26/2021] [Indexed: 12/30/2022] Open
Abstract
Background Serological diagnosis of Zika virus (ZIKV) infection is challenging because of the antibody cross-reactivity among flaviviruses. At the same time, the role of Nucleic Acid Testing (NAT) is limited by the low proportion of symptomatic infections and the low average viral load. Here, we compared the diagnostic performance of commercially available IgM, IgAM, and IgG ELISAs in sequential samples during the ZIKV and chikungunya (CHIKV) epidemics and co-circulation of dengue virus (DENV) in Brazil and Venezuela. Methodology/Principal findings Acute (day of illness 1–5) and follow-up (day of illness ≥ 6) blood samples were collected from nine hundred and seven symptomatic patients enrolled in a prospective multicenter study between June 2012 and August 2016. Acute samples were tested by RT-PCR for ZIKV, DENV, and CHIKV. Acute and follow-up samples were tested for IgM, IgAM, and IgG antibodies to ZIKV using commercially available ELISAs. Among follow-up samples with a RT-PCR confirmed ZIKV infection, anti-ZIKV IgAM sensitivity was 93.5% (43/46), while IgM and IgG exhibited sensitivities of 30.3% (10/33) and 72% (18/25), respectively. An additional 24% (26/109) of ZIKV infections were detected via IgAM seroconversion in ZIKV/DENV/CHIKV RT-PCR negative patients. The specificity of anti-ZIKV IgM was estimated at 93% and that of IgAM at 85%. Conclusions/Significance Our findings exemplify the challenges of the assessment of test performance for ZIKV serological tests in the real-world setting, during co-circulation of DENV, ZIKV, and CHIKV. However, we can also demonstrate that the IgAM immunoassay exhibits superior sensitivity to detect ZIKV RT-PCR confirmed infections compared to IgG and IgM immunoassays. The IgAM assay also proves to be promising for detection of anti-ZIKV seroconversions in sequential samples, both in ZIKV PCR-positive as well as PCR-negative patients, making this a candidate assay for serological monitoring of pregnant women in future ZIKV outbreaks. Zika virus (ZIKV) is transmitted through the bite of infected Aedes mosquitos but can also be transmitted sexually or vertically from mother-to-child. The same mosquitoes transmit dengue virus (DENV) and chikungunya virus (CHIKV), which cause similar clinical syndromes. The ZIKV epidemics in the Pacific and the Americas that occurred between 2015 and 2017 were linked to congenital abnormalities, most prominently microcephaly, in newborns. Because most infections are asymptomatic, diagnosis via indirect serological assays is an important strategy. On the other hand, many serological assays are affected by cross-reactivity resulting from prior infections by closely related viruses, such as DENV. This study evaluated three commercially available and widely used immunoassays that detect IgG, IgM or IgA and M (IgAM) antibodies to ZIKV. Our results suggest that the IgAM test performs best by detecting around 90% of RT-PCR confirmed infections. We also detected additional infections that were not detected by RT-PCR. The strength of this study is that it was carried out in two different countries of the American region where several arboviruses are endemic and that sequential blood samples from individual patients were available to evaluate the performance of the tests over time.
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Affiliation(s)
- Ivonne Morales
- Section Clinical Tropical Medicine, Department for Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany
- German Centre for Infection Research (DZIF), associated partner Heidelberg University Hospital, Heidelberg, Germany
| | - Kerstin D. Rosenberger
- Section Clinical Tropical Medicine, Department for Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany
- German Centre for Infection Research (DZIF), associated partner Heidelberg University Hospital, Heidelberg, Germany
| | - Tereza Magalhaes
- Center for Vector-Borne Infectious Diseases (CVID), Department of Microbiology, Immunology and Pathology, Colorado State University (CSU), Fort Collins, Colorado, United States of America
| | - Clarice N. L. Morais
- Laboratory of Virology and Experimental Therapeutics, Aggeu Magalhaes Institute, Oswaldo Cruz Foundation, Recife, Brazil
| | - Cynthia Braga
- Department of Parasitology, Aggeu Magalhaes Institute, Oswaldo Cruz Foundation, Recife, Brazil
- Institute of Integral Medicine Professor Fernando Figueira (Instituto de Medicina Integral Professor Fernando Figueira-IMIP), Recife, Brazil
| | - Ernesto T. A. Marques
- Laboratory of Virology and Experimental Therapeutics, Aggeu Magalhaes Institute, Oswaldo Cruz Foundation, Recife, Brazil
- Department of Infectious Diseases, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Guilherme Amaral Calvet
- Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Luana Damasceno
- Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Patricia Brasil
- Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | | | - Adriana Tami
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology and Infection Prevention, Groningen, The Netherlands
- Facultad de Ciencias de la Salud, Universidad de Carabobo,
Valencia, Venezuela
| | - Sarah Bethencourt
- Facultad de Ciencias de la Salud, Universidad de Carabobo,
Valencia, Venezuela
| | | | | | | | | | | | - Nguyen Than Ha Quyen
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam
| | - Cameron P. Simmons
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam
- Institute for Vector-Borne Disease, Monash University, Melbourne, Australia
| | - Bridget Wills
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam
- Centre for Tropical Medicine and Global Health, Nuffield Department of Clinical Medicine, Oxford University, Oxford, United Kingdom
| | - Xavier de Lamballerie
- Unité des Virus Emergents (UVE Aix Marseille Université, IRD 190, Inserm 1207-IHUMéditerranée Infection), Marseille, France
| | - Jan Felix Drexler
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
- Sechenov University, Martsinovsky Institute of Medical Parasitology, Tropical and Vector-Borne Diseases, Moscow, Russia
- German Centre for Infection Research (DZIF), associated partner Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Thomas Jaenisch
- Section Clinical Tropical Medicine, Department for Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany
- German Centre for Infection Research (DZIF), associated partner Heidelberg University Hospital, Heidelberg, Germany
- Heidelberg Institute of Global Health (HIGH), Heidelberg University Hospital, Heidelberg, Germany
- * E-mail:
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Halabi J, Jagger BW, Salazar V, Winkler ES, White JP, Humphrey PA, Hirsch AJ, Streblow DN, Diamond MS, Moley K. Zika Virus Causes Acute and Chronic Prostatitis in Mice and Macaques. J Infect Dis 2021; 221:1506-1517. [PMID: 31616920 DOI: 10.1093/infdis/jiz533] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 10/11/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Sexual transmission and persistence of Zika virus (ZIKV) in the male reproductive tract has raised concerned for potential damaging effects on function. Animal studies have demonstrated that ZIKV virus can infect and damage the testis and epididymis, and these results has been correlated to lower sperm counts in ZIKV-infected humans. The prostate plays a vital role in the male reproductive tract, with acute and chronic prostatitis linked to male infertility. METHODS In this study, we evaluated the effects of ZIKV virus on the prostate in mice and nonhuman primates. RESULTS In mice, ZIKV infected the prostate and triggered inflammation that persisted even after virus clearance. Evidence of chronic prostatitis associated with ZIKV infection remained for several months. Similar histological findings were observed in the prostate of ZIKV-infected rhesus macaques. CONCLUSIONS These studies establish that ZIKV replicates in the prostate and can cause acute and chronic inflammatory and proliferative changes in mouse and nonhuman primate models.
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Affiliation(s)
- Jacques Halabi
- Department of Obstetrics and Gynecology, Washington University School of Medicine St. Louis, Missouri, USA
| | - Brett W Jagger
- Department of Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, Michigan, USA St. Louis, Missouri, USA
| | - Vanessa Salazar
- Department of Medicine, Washington University School of Medicine St. Louis, Missouri, USA
| | - Emma S Winkler
- Department of Medicine, Washington University School of Medicine St. Louis, Missouri, USA
| | - James P White
- Department of Medicine, Washington University School of Medicine St. Louis, Missouri, USA
| | - Peter A Humphrey
- Department of Pathology, Yale School of Medicine New Haven, Connecticut, USA
| | - Alec J Hirsch
- Vaccine and Gene Therapy Institute, Oregon Health and Science University Beaverton, Oregon, USA.,Division of Pathobiology and Immunology, Oregon National Primate Research Center, Beaverton, Oregon, USA
| | - Daniel N Streblow
- Vaccine and Gene Therapy Institute, Oregon Health and Science University Beaverton, Oregon, USA.,Division of Pathobiology and Immunology, Oregon National Primate Research Center, Beaverton, Oregon, USA
| | - Michael S Diamond
- Department of Medicine, Washington University School of Medicine St. Louis, Missouri, USA.,Department of Molecular Microbiology, Washington University School of Medicine St. Louis, Missouri, USA.,Department of Pathology and Immunology, Washington University School of Medicine St. Louis, Missouri, USA
| | - Kelle Moley
- Department of Obstetrics and Gynecology, Washington University School of Medicine St. Louis, Missouri, USA
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Centeno-Tablante E, Medina-Rivera M, Finkelstein JL, Herman HS, Rayco-Solon P, Garcia-Casal MN, Rogers L, Ghezzi-Kopel K, Zambrano Leal MP, Andrade Velasquez JK, Chang Asinc JG, Peña-Rosas JP, Mehta S. Update on the Transmission of Zika Virus Through Breast Milk and Breastfeeding: A Systematic Review of the Evidence. Viruses 2021; 13:v13010123. [PMID: 33477428 PMCID: PMC7830280 DOI: 10.3390/v13010123] [Citation(s) in RCA: 9] [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: 12/06/2020] [Revised: 01/06/2021] [Accepted: 01/14/2021] [Indexed: 12/25/2022] Open
Abstract
We systematically searched regional and international databases and screened 1658 non-duplicate records describing women with suspected or confirmed ZIKV infection, intending to breastfeed or give breast milk to an infant to examine the potential of mother-to-child transmission of Zika virus (ZIKV) through breast milk or breastfeeding-related practices. Fourteen studies met our inclusion criteria and inform this analysis. These studies reported on 97 mother-children pairs who provided breast milk for ZIKV assessment. Seventeen breast milk samples from different women were found positive for ZIKV via RT-PCR, and ZIKV replication was found in cell cultures from five out of seven breast milk samples from different women. Only three out of six infants who had ZIKV infection were breastfed, no evidence of clinical complications was found to be associated with ZIKV RNA in breast milk. This review updates our previous report by including 12 new articles, in which we found no evidence of ZIKV mother-to-child transmission through breast milk intake or breastfeeding. As the certainty of the present evidence is low, additional studies are still warranted to determine if ZIKV can be transmitted through breastfeeding.
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Affiliation(s)
- Elizabeth Centeno-Tablante
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA; (E.C.-T.); (M.M.-R.); (J.L.F.); (H.S.H.)
| | - Melisa Medina-Rivera
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA; (E.C.-T.); (M.M.-R.); (J.L.F.); (H.S.H.)
| | - Julia L. Finkelstein
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA; (E.C.-T.); (M.M.-R.); (J.L.F.); (H.S.H.)
| | - Heather S. Herman
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA; (E.C.-T.); (M.M.-R.); (J.L.F.); (H.S.H.)
| | - Pura Rayco-Solon
- Department of Maternal, Newborn, Child and Adolescent Health and Ageing, World Health Organization, Geneva CH-1211, Switzerland;
| | - Maria Nieves Garcia-Casal
- Department of Nutrition and Food Safety, World Health Organization, Geneva, CH-1211, Switzerland; (M.N.G.-C.); (L.R.); (J.P.P.-R.)
| | - Lisa Rogers
- Department of Nutrition and Food Safety, World Health Organization, Geneva, CH-1211, Switzerland; (M.N.G.-C.); (L.R.); (J.P.P.-R.)
| | | | - Mildred P. Zambrano Leal
- Hospital de Niños Roberto Gilbert Elizalde, Guayaquil 090514, Ecuador; (M.P.Z.L.); (J.K.A.V.); (J.G.C.A.)
| | - Joyce K. Andrade Velasquez
- Hospital de Niños Roberto Gilbert Elizalde, Guayaquil 090514, Ecuador; (M.P.Z.L.); (J.K.A.V.); (J.G.C.A.)
| | - Juan G. Chang Asinc
- Hospital de Niños Roberto Gilbert Elizalde, Guayaquil 090514, Ecuador; (M.P.Z.L.); (J.K.A.V.); (J.G.C.A.)
| | - Juan Pablo Peña-Rosas
- Department of Nutrition and Food Safety, World Health Organization, Geneva, CH-1211, Switzerland; (M.N.G.-C.); (L.R.); (J.P.P.-R.)
| | - Saurabh Mehta
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA; (E.C.-T.); (M.M.-R.); (J.L.F.); (H.S.H.)
- Correspondence:
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Majee P, Pattnaik A, Sahoo BR, Shankar U, Pattnaik AK, Kumar A, Nayak D. Inhibition of Zika virus replication by G-quadruplex-binding ligands. MOLECULAR THERAPY. NUCLEIC ACIDS 2021; 23:691-701. [PMID: 33575115 PMCID: PMC7851496 DOI: 10.1016/j.omtn.2020.12.030] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 12/30/2020] [Indexed: 01/05/2023]
Abstract
Zika virus (ZIKV), a mosquito-transmitted Flavivirus, emerged in the last decade causing serious diseases and affecting human health globally. Currently, no licensed vaccines or antivirals are available to combat ZIKV, although several vaccine candidates are in the pipeline. In recent years, the presence of non-canonical G-quadruplex (GQ) secondary structures in viral genomes has ignited significant attention as potential targets for antiviral strategy. In this study, we identified several novel conserved potential GQ structures by analyzing published ZIKV genome sequences using an in-house algorithm. Biophysical and biochemical analysis of the RNA sequences containing these potential GQ sequences suggested the existence of such structures in the ZIKV genomes. Studies with known GQ structure-binding and -stabilizing ligands such as Braco-19 and TMPyP4 provided support for this contention. The presence of these ligands in cell culture media led to significant inhibition of infectious ZIKV yield, as well as reduced viral genome replication and viral protein production. Overall, our results, for the first time, show that ZIKV replication can be inhibited by GQ structure-binding and -stabilizing compounds and suggest a new strategy against ZIKV infection mitigation and control.
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Affiliation(s)
- Prativa Majee
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Madhya Pradesh 453552, India
| | - Aryamav Pattnaik
- School of Veterinary Medicine and Biomedical Sciences and Nebraska Center for Virology, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Bikash R Sahoo
- School of Veterinary Medicine and Biomedical Sciences and Nebraska Center for Virology, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Uma Shankar
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Madhya Pradesh 453552, India
| | - Asit K Pattnaik
- School of Veterinary Medicine and Biomedical Sciences and Nebraska Center for Virology, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Amit Kumar
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Madhya Pradesh 453552, India
| | - Debasis Nayak
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Madhya Pradesh 453552, India
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Carro SD, Cherry S. Beyond the Surface: Endocytosis of Mosquito-Borne Flaviviruses. Viruses 2020; 13:E13. [PMID: 33374822 PMCID: PMC7824540 DOI: 10.3390/v13010013] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/16/2020] [Accepted: 12/19/2020] [Indexed: 02/06/2023] Open
Abstract
Flaviviruses are a group of positive-sense RNA viruses that are primarily transmitted through arthropod vectors and are capable of causing a broad spectrum of diseases. Many of the flaviviruses that are pathogenic in humans are transmitted specifically through mosquito vectors. Over the past century, many mosquito-borne flavivirus infections have emerged and re-emerged, and are of global importance with hundreds of millions of infections occurring yearly. There is a need for novel, effective, and accessible vaccines and antivirals capable of inhibiting flavivirus infection and ameliorating disease. The development of therapeutics targeting viral entry has long been a goal of antiviral research, but most efforts are hindered by the lack of broad-spectrum potency or toxicities associated with on-target effects, since many host proteins necessary for viral entry are also essential for host cell biology. Mosquito-borne flaviviruses generally enter cells by clathrin-mediated endocytosis (CME), and recent studies suggest that a subset of these viruses can be internalized through a specialized form of CME that has additional dependencies distinct from canonical CME pathways, and antivirals targeting this pathway have been discovered. In this review, we discuss the role and contribution of endocytosis to mosquito-borne flavivirus entry as well as consider past and future efforts to target endocytosis for therapeutic interventions.
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Affiliation(s)
| | - Sara Cherry
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA;
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Chudnovets A, Liu J, Narasimhan H, Liu Y, Burd I. Role of Inflammation in Virus Pathogenesis during Pregnancy. J Virol 2020; 95:e01381-19. [PMID: 33115865 PMCID: PMC7944452 DOI: 10.1128/jvi.01381-19] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Viral infections during pregnancy lead to a spectrum of maternal and fetal outcomes, ranging from asymptomatic disease to more critical conditions presenting with severe maternal morbidity, stillbirth, preterm birth, intrauterine growth restriction, and fetal congenital anomalies, either apparent at birth or later in life. In this article, we review the pathogenesis of several viral infections that are particularly relevant in the context of pregnancy and intrauterine inflammation. Understanding the diverse mechanisms employed by viral pathogens as well as the repertoire of immune responses induced in the mother may help to establish novel therapeutic options to attenuate changes in the maternal-fetal interface and prevent adverse pregnancy outcomes.
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Affiliation(s)
- Anna Chudnovets
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jin Liu
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Harish Narasimhan
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Yang Liu
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Irina Burd
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Densathaporn T, Sangthong R, Sakolnapa M, Surasombatpattana S, Kemapunmanus M, Masrinoul P, Yoksan S, McNeil EB, Chongsuvivatwong V. Survey on neutralizing antibodies against Zika virus eighteen months post-outbreak in two southern Thailand communities. BMC Infect Dis 2020; 20:921. [PMID: 33272192 PMCID: PMC7711253 DOI: 10.1186/s12879-020-05654-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 11/24/2020] [Indexed: 11/16/2022] Open
Abstract
Background In 2016 and 2017, Zika virus (ZIKV) infection outbreaks occurred in two communities in southern Thailand. This re-immerging infection can widely spread by mosquito bites and cause serious complications in a central nervous system among children born to infected mothers. Thus, they should be protected. This study aims to (1) To determine the prevalence of neutralizing ZIKV antibodies in the post-outbreak areas among the general population and pregnancy women residing at various distances from the houses of the nearest index patients; (2) To examine the cross-neutralizing capacity of antibodies against ZIKV on other flaviviruses commonly found in the study areas; (3) To identify factors associated with the presence of neutralizing ZIKV antibodies. Methods The two post-outbreak communities were visited at 18 months after the outbreaks. We enrolled (1) 18 confirmed ZIKV infected (index) cases, (2) sample of 554 neighbors in the outbreak areas who lived at various distances from the index patients’ houses, (3) 190 residents of non-outbreak areas, and (4) all pregnant women regardless of gestational age residing in the study areas (n = 805). All serum specimens underwent the plaque reduction neutralization test (PRNT). Ten randomly selected ZIKV seropositive and ten randomly selected seronegative specimens were tested for dengue virus serotypes 1–4 (DENV1–4) and Japanese encephalitis virus (JEV) antibodies using PRNT90. Serum titer above 1:10 was considered positive. Multiple logistic regression was used to assess factors associated with seropositivity. Results Out of all 18 index cases, 9 remained seropositive. The seroprevalence (95% CI) in the two outbreak areas were 43.7% (35.9–51.6%) and 29.7% (23.3–36.0%) in general population, and 24.3% (20.1–28.8%) and 12.8% (9.7–16.5%) in pregnant women. Multivariate analysis showed that seropositivity was independent of the distance gradient from the index’s houses. However, being elderly was associated with seropositivity. DENV1–4 and JEV neutralizing antibodies were present in most ZIKV-positive and negative subsamples. Conclusion Protective herd immunity for ZIKV infection is inadequate, especially among pregnant women in the two post-outbreak areas in southern Thailand. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-020-05654-8.
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Affiliation(s)
- Theerut Densathaporn
- Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hatyai, 90110, Thailand
| | - Rassamee Sangthong
- Immunology and Virology Unit, Department of Pathology, Faculty of Medicine, Prince of Songkla University, Hatyai, 90110, Thailand
| | - Monvaris Sakolnapa
- Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hatyai, 90110, Thailand
| | - Smonrapat Surasombatpattana
- Immunology and Virology Unit, Department of Pathology, Faculty of Medicine, Prince of Songkla University, Hatyai, 90110, Thailand
| | - Marisa Kemapunmanus
- Immunology and Virology Unit, Department of Pathology, Faculty of Medicine, Prince of Songkla University, Hatyai, 90110, Thailand
| | - Promsin Masrinoul
- Center for Vaccine Development, Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, 73170, Thailand
| | - Sutee Yoksan
- Center for Vaccine Development, Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, 73170, Thailand
| | - Edward B McNeil
- Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hatyai, 90110, Thailand
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The Importance of Biobanking for Response to Pandemics Caused by Emerging Viruses: The European Virus Archive As an Observatory of the Global Response to the Zika Virus and COVID-19 Crisis. Biopreserv Biobank 2020; 18:561-569. [DOI: 10.1089/bio.2020.0119] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Williamson PC, Biggerstaff BJ, Simmons G, Stone M, Winkelman V, Latoni G, Alsina J, Bakkour S, Newman C, Pate LL, Galel SA, Kleinman S, Busch MP. Evolving viral and serological stages of Zika virus RNA-positive blood donors and estimation of incidence of infection during the 2016 Puerto Rican Zika epidemic: an observational cohort study. THE LANCET. INFECTIOUS DISEASES 2020; 20:1437-1445. [PMID: 32673594 DOI: 10.1016/s1473-3099(19)30706-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 08/31/2019] [Accepted: 11/14/2019] [Indexed: 01/11/2023]
Abstract
BACKGROUND Puerto Rico began screening blood donations for Zika virus RNA with nucleic acid amplification tests (NAATs) on April 3, 2016, because of an emerging Zika virus outbreak. We followed up positive donors to assess the dynamics of viral and serological markers during the early stages of Zika virus infection and update the estimate of infection incidence in the Puerto Rican population during the outbreak. METHODS Blood donations from volunteer donors in Puerto Rico were screened for the presence of Zika virus RNA using the cobas Zika NAAT. Positive donations were further tested to confirm infection, estimate viral load, and identify Zika virus-specific IgM antibodies. Individuals with positive blood donations were invited to attend follow-up visits. Donations with confirmed infection (defined as detection of Zika virus RNA or IgM on additional testing of index or follow-up samples) were assessed for stage of infection according to Zika virus RNA detectability in simulated minipools, viral load, and Zika virus IgM status. A three-step process was used to estimate the mean duration of NAAT reactivity of Zika virus in human plasma from individuals identified pre-seroconversion with at least one follow up visit and to update the 2016 incidence estimate of Zika virus infection. FINDINGS Between April 3 and Dec 31, 2016, 53 112 blood donations were screened for Zika virus, of which 351 tested positive, 339 had confirmed infections, and 319 could be staged. Compared with IgM-positive index donations (n=110), IgM-negative index donations (n=209) had higher mean viral loads (1·1 × 106vs 8·3 × 104 international units per mL) and were more likely to be detected in simulated minipools (93% [n=194] vs 26% [n=29]). The proportions of donations with confirmed infections that had viral RNA detected only in individual-donation NAATs (ie, not in simulated minipools) and were IgM positive increased as the epidemic evolved. The estimated mean duration of NAAT detectability in the 140 donors included in the follow-up study was 11·70 days (95% CI 10·06-14·36). Applying this detection period to the observed proportion of donations that were confirmed NAAT positive yielded a Zika virus seasonal incidence estimate of 21·1% (95% CI 18·1-24·1); 768 101 infections in a population of 3 638 773 in 2016. INTERPRETATION Characterisation of early Zika virus infection has implications for blood safety because infectivity of blood donations and utility of screening methods likely correlate with viral load and serological stage of infection. Our findings also have implications for diagnostic testing, public health surveillance, and epidemiology, and we estimate that around 21% of the Puerto Rican population was infected during the 2016 outbreak. FUNDING Biomedical Advanced Research and Development Authority, National Heart, Lung, and Blood Institute.
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Affiliation(s)
| | | | | | - Mars Stone
- Vitalant Research Institute, San Francisco, CA, USA
| | | | | | - Jose Alsina
- Banco de Sangre Servicios Mutuos, Guaynabo, PR, USA
| | | | - Christina Newman
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Lisa L Pate
- Roche Molecular Systems, Pleasanton, CA, USA
| | | | - Steven Kleinman
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
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47
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Masmejan S, Musso D, Vouga M, Pomar L, Dashraath P, Stojanov M, Panchaud A, Baud D. Zika Virus. Pathogens 2020; 9:pathogens9110898. [PMID: 33126413 PMCID: PMC7692141 DOI: 10.3390/pathogens9110898] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 10/26/2020] [Accepted: 10/26/2020] [Indexed: 12/12/2022] Open
Abstract
Zika virus (ZIKV), a neurotropic single-stranded RNA flavivirus, remains an important cause of congenital infection, fetal microcephaly, and Guillain-Barré syndrome in populations where ZIKV has adapted to a nexus involving the Aedes mosquitoes and humans. To date, outbreaks of ZIKV have occurred in Africa, Southeast Asia, the Pacific islands, the Americas, and the Caribbean. Emerging evidence, however, suggests that the virus also has the potential to cause infections in Europe, where autochtonous transmission of the virus has been identified. This review focuses on evolving ZIKV epidemiology, modes of transmission and host-virus interactions. The clinical manifestations, diagnostic issues relating to cross-reactivity to the dengue flavivirus and concerns surrounding ZIKV infection in pregnancy are discussed. In the last section, current challenges in treatment and prevention are outlined.
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Affiliation(s)
- Sophie Masmejan
- Maternofetal and Obstetrics Research Unit, Department “Woman-Mother-Child”, University Hospital, 1011 Lausanne, Switzerland; (S.M.); (M.V.); (L.P.); (M.S.)
| | - Didier Musso
- Laboratoire Eurofins Labazur Guyane, 97300 Cayenne, French Guiana;
- Aix Marseille University, IRD, AP-HM, SSA, VITROME, IHU-Méditerranée Infection, 13007 Marseille, France
| | - Manon Vouga
- Maternofetal and Obstetrics Research Unit, Department “Woman-Mother-Child”, University Hospital, 1011 Lausanne, Switzerland; (S.M.); (M.V.); (L.P.); (M.S.)
| | - Leo Pomar
- Maternofetal and Obstetrics Research Unit, Department “Woman-Mother-Child”, University Hospital, 1011 Lausanne, Switzerland; (S.M.); (M.V.); (L.P.); (M.S.)
| | - Pradip Dashraath
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, National University Hospital, Singapore 119074, Singapore;
| | - Milos Stojanov
- Maternofetal and Obstetrics Research Unit, Department “Woman-Mother-Child”, University Hospital, 1011 Lausanne, Switzerland; (S.M.); (M.V.); (L.P.); (M.S.)
| | - Alice Panchaud
- Service of Pharmacy, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland;
- Institute of Primary Health Care (BIHAM), University of Bern, 3012 Bern, Switzerland
| | - David Baud
- Maternofetal and Obstetrics Research Unit, Department “Woman-Mother-Child”, University Hospital, 1011 Lausanne, Switzerland; (S.M.); (M.V.); (L.P.); (M.S.)
- Correspondence:
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48
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Hubert M, Jeannin P, Burlaud-Gaillard J, Roingeard P, Gessain A, Ceccaldi PE, Vidy A. Evidence That Zika Virus Is Transmitted by Breastfeeding to Newborn A129 ( Ifnar1 Knock-Out) Mice and Is Able to Infect and Cross a Tight Monolayer of Human Intestinal Epithelial Cells. Front Microbiol 2020; 11:524678. [PMID: 33193119 PMCID: PMC7649816 DOI: 10.3389/fmicb.2020.524678] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 09/30/2020] [Indexed: 12/13/2022] Open
Abstract
Zika virus (ZIKV) belongs to the Flavivirus genus in the Flaviviridae family. Mainly transmitted via mosquito bites (Aedes aegypti, Aedes albopictus), ZIKV has been classified in the large category of arthropod-borne viruses, or arboviruses. However, during the past two outbreaks in French Polynesia (2013–2014) and Latin America (2015–2016), several cases of ZIKV human-to-human transmission were reported, either vertically via transplacental route but also horizontally after sexual intercourse. Interestingly, high viral burdens were detected in the colostrum and breast milk of infected women and mother-to-child transmission of ZIKV during breastfeeding was recently highlighted. In a previous study, we highlighted the implication of the mammary epithelium (blood–milk barrier) in ZIKV infectious particles excretion in breast milk. However, mechanisms of their further transmissibility to the newborn via oral route through contaminated breast milk remain unknown. In this study, we provide the first experimental proof-of-concept of the existence of the breastfeeding as a route for mother-to-child transmission of ZIKV and characterized the neonatal oral transmission in a well-established mouse model of ZIKV infection. From a mechanistical point-of-view, we demonstrated for the first time that ZIKV was able to infect and cross an in vitro model of tight human intestinal epithelium without altering its barrier integrity, permitting us to consider the gut as an entry site for ZIKV after oral exposure. By combining in vitro and in vivo experiments, this study strengthens the plausibility of mother-to-child transmission of ZIKV during breastfeeding and helps to better characterize underlying mechanisms, such as the crossing of the newborn intestinal epithelium by ZIKV. As a consequence, these data could serve as a basis for a reflection about the implementation of measures to prevent ZIKV transmission, while keeping in mind breastfeeding-associated benefits.
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Affiliation(s)
- Mathieu Hubert
- Unité Epidémiologie et Physiopathologie des Virus Oncogènes, Département Virologie, Institut Pasteur, Paris, France.,Unité Epidémiologie et Physiopathologie des Virus Oncogènes, Université de Paris, Paris, France.,Centre National de la Recherche Scientifique, Département Virologie, Institut Pasteur, UMR 3569, Paris, France
| | - Patricia Jeannin
- Unité Epidémiologie et Physiopathologie des Virus Oncogènes, Département Virologie, Institut Pasteur, Paris, France.,Unité Epidémiologie et Physiopathologie des Virus Oncogènes, Université de Paris, Paris, France.,Centre National de la Recherche Scientifique, Département Virologie, Institut Pasteur, UMR 3569, Paris, France
| | - Julien Burlaud-Gaillard
- INSERM U1259, Université de Tours et CHU de Tours, Tours, France.,Plate-forme IBiSA de Microscopie Electronique, Université de Tours et CHU de Tours, Tours, France
| | - Philippe Roingeard
- INSERM U1259, Université de Tours et CHU de Tours, Tours, France.,Plate-forme IBiSA de Microscopie Electronique, Université de Tours et CHU de Tours, Tours, France
| | - Antoine Gessain
- Unité Epidémiologie et Physiopathologie des Virus Oncogènes, Département Virologie, Institut Pasteur, Paris, France.,Unité Epidémiologie et Physiopathologie des Virus Oncogènes, Université de Paris, Paris, France.,Centre National de la Recherche Scientifique, Département Virologie, Institut Pasteur, UMR 3569, Paris, France
| | - Pierre-Emmanuel Ceccaldi
- Unité Epidémiologie et Physiopathologie des Virus Oncogènes, Département Virologie, Institut Pasteur, Paris, France.,Unité Epidémiologie et Physiopathologie des Virus Oncogènes, Université de Paris, Paris, France.,Centre National de la Recherche Scientifique, Département Virologie, Institut Pasteur, UMR 3569, Paris, France
| | - Aurore Vidy
- Unité Epidémiologie et Physiopathologie des Virus Oncogènes, Département Virologie, Institut Pasteur, Paris, France.,Unité Epidémiologie et Physiopathologie des Virus Oncogènes, Université de Paris, Paris, France.,Centre National de la Recherche Scientifique, Département Virologie, Institut Pasteur, UMR 3569, Paris, France
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49
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Guo M, Hui L, Nie Y, Tefsen B, Wu Y. ZIKV viral proteins and their roles in virus-host interactions. SCIENCE CHINA-LIFE SCIENCES 2020; 64:709-719. [PMID: 33068285 PMCID: PMC7568452 DOI: 10.1007/s11427-020-1818-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 09/12/2020] [Indexed: 12/17/2022]
Abstract
The re-emergence of Zika virus (ZIKV) and its associated neonatal microcephaly and Guillain-Barré syndrome have led the World Health Organization to declare a global health emergency. Until today, many related studies have successively reported the role of various viral proteins of ZIKV in the process of ZIKV infection and pathogenicity. These studies have provided significant insights for the treatment and prevention of ZIKV infection. Here we review the current research advances in the functional characterization of the interactions between each ZIKV viral protein and its host factors.
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Affiliation(s)
- Moujian Guo
- State Key Laboratory of Virology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China
| | - Lixia Hui
- State Key Laboratory of Virology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China
| | - Yiwen Nie
- State Key Laboratory of Virology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China
| | - Boris Tefsen
- Department of Biological Sciences, Xi'an Jiaotong-Liverpool University, Suzhou, 215123, China
| | - Ying Wu
- State Key Laboratory of Virology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China. .,Hubei Province Key Laboratory of Allergy and Immunology, Wuhan, 430071, China.
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50
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Carbaugh DL, Zhou S, Sanders W, Moorman NJ, Swanstrom R, Lazear HM. Two Genetic Differences between Closely Related Zika Virus Strains Determine Pathogenic Outcome in Mice. J Virol 2020; 94:e00618-20. [PMID: 32796074 PMCID: PMC7527068 DOI: 10.1128/jvi.00618-20] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 08/01/2020] [Indexed: 12/20/2022] Open
Abstract
Recent Zika virus (ZIKV) outbreaks and unexpected clinical manifestations of ZIKV infection have prompted an increase in ZIKV-related research. Here, we identify two strain-specific determinants of ZIKV virulence in mice. We found that strain H/PF/2013 caused 100% lethality in Ifnar1-/- mice, whereas PRVABC59 caused no lethality; both strains caused 100% lethality in Ifnar1-/-Ifngr1-/- double-knockout (DKO) mice. Deep sequencing revealed a high-frequency variant in PRVABC59 not present in H/PF/2013: a G-to-T change at nucleotide 1965 producing a Val-to-Leu substitution at position 330 of the viral envelope (E) protein. We show that the V330 variant is lethal on both virus strain backgrounds, whereas the L330 variant is attenuating only on the PRVABC59 background. These results identify a balanced polymorphism in the E protein that is sufficient to attenuate the PRVABC59 strain but not H/PF/2013. The consensus sequences of H/PF/2013 and PRVABC59 differ by 3 amino acids, but these were not responsible for the difference in virulence between the two strains. H/PF/2013 and PRVABC59 differ by an additional 31 noncoding or silent nucleotide changes. We made a panel of chimeric viruses with identical amino acid sequences but nucleotide sequences derived from H/PF/2013 or PRVABC59. We found that 6 nucleotide differences in the 3' quarter of the H/PF/2013 genome were sufficient to confer virulence in Ifnar1-/- mice. Altogether, our work identifies a large and previously unreported difference in virulence between two commonly used ZIKV strains, in two widely used mouse models of ZIKV pathogenesis (Ifnar1-/- and Ifnar1-/- Ifngr1-/- DKO mice).IMPORTANCE Contemporary ZIKV strains are closely related and often used interchangeably in laboratory research. Here, we identify two strain-specific determinants of ZIKV virulence that are evident in only Ifnar1-/- mice but not Ifnar1-/-Ifngr1-/- DKO mice. These results identify a balanced polymorphism in the E protein that is sufficient to attenuate the PRVABC59 strain but not H/PF/2013. We further identify a second virulence determinant in the H/PF/2013 strain, which is driven by the viral nucleotide sequence but not the amino acid sequence. Altogether, our work identifies a large and previously unreported difference in virulence between two commonly used ZIKV strains, in two widely used mouse models of ZIKV pathogenesis. Our results highlight that even very closely related virus strains can produce significantly different pathogenic phenotypes in common laboratory models.
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Affiliation(s)
- Derek L Carbaugh
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Shuntai Zhou
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Wes Sanders
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Nathaniel J Moorman
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Ronald Swanstrom
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Center for AIDS Research, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Helen M Lazear
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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