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Nag DK, Efner KJ. Transovarial Transmission of Cell-Fusing Agent Virus in Naturally Infected Aedes aegypti Mosquitoes. Viruses 2024; 16:1116. [PMID: 39066278 PMCID: PMC11281400 DOI: 10.3390/v16071116] [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: 05/28/2024] [Revised: 07/05/2024] [Accepted: 07/07/2024] [Indexed: 07/28/2024] Open
Abstract
Mosquito-borne arboviruses include several pathogens that are responsible for many diseases of significant public health burden. Mosquitoes also host many insect-specific viruses that cannot replicate in vertebrate cells. These insect-specific viruses persist in nature predominantly via vertical transmission (VT), and they exhibit high VT rates (VTRs). Cell-fusing agent virus (CFAV), an insect-specific orthoflavivirus, shows high VTRs in naturally infected mosquitoes but not in artificially infected mosquitoes. To determine whether the high VTRs are due to transovarial transmission, we investigated VT and ovary infection patterns in naturally CFAV-infected Aedes aegypti (Bangkok) mosquitoes. VT was monitored by detecting CFAV among the progeny by reverse-transcription polymerase chain reaction and ovary infection was determined by in situ hybridization using a virus-specific probe. We showed that in CFAV-positive mosquitoes, ovarian follicles were infected, suggesting that VT occurs by transovarial transmission in naturally infected mosquitoes. Additionally, mosquitoes harbored dormant, non-replicative CFAV that remained below the detection level. These results suggested that CFAV persists via VT in nature and has the potential to remain dormant in diapausing mosquitoes during unfavorable conditions. Understanding this VT mechanism is crucial for comprehending the persistence of insect-specific viruses (and potentially dual-host arboviruses) in their natural environment.
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Affiliation(s)
- Dilip K. Nag
- Griffin Laboratory, Wadsworth Center, New York State Department of Health, Slingerlands, NY 12159, USA;
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2
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Gupta S, Sharma R, Williams AE, Sanchez-Vargas I, Rose NH, Zhang C, Crosbie-Villaseca A, Zhu Z, Dayama G, Gloria-Soria A, Brackney DE, Manning J, Wheeler SS, Caranci A, Reyes T, Sylla M, Badolo A, Akorli J, Aribodor OB, Ayala D, Liu WL, Chen CH, Vasquez C, Acosta CG, Ponlawat A, Magalhaes T, Carter B, Wesson D, Surin D, Younger MA, Costa-da-Silva AL, DeGennaro M, Bergman A, Lambrechts L, McBride CS, Olson KE, Calvo E, Lau NC. Global genomics of Aedes aegypti unveils widespread and novel infectious viruses capable of triggering a small RNA response. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.06.597482. [PMID: 38895463 PMCID: PMC11185646 DOI: 10.1101/2024.06.06.597482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
The mosquito Aedes aegypti is a prominent vector for arboviruses, but the breadth of mosquito viruses that infects this specie is not fully understood. In the broadest global survey to date of over 200 Ae. aegypti small RNA samples, we detected viral small interfering RNAs (siRNAs) and Piwi interacting RNAs (piRNAs) arising from mosquito viruses. We confirmed that most academic laboratory colonies of Ae. aegypti lack persisting viruses, yet two commercial strains were infected by a novel tombus-like virus. Ae. aegypti from North to South American locations were also teeming with multiple insect viruses, with Anphevirus and a bunyavirus displaying geographical boundaries from the viral small RNA patterns. Asian Ae. aegypti small RNA patterns indicate infections by similar mosquito viruses from the Americas and reveal the first wild example of dengue virus infection generating viral small RNAs. African Ae. aegypti also contained various viral small RNAs including novel viruses only found in these African substrains. Intriguingly, viral long RNA patterns can differ from small RNA patterns, indicative of viral transcripts evading the mosquitoes' RNA interference (RNAi) machinery. To determine whether the viruses we discovered via small RNA sequencing were replicating and transmissible, we infected C6/36 and Aag2 cells with Ae. aegypti homogenates. Through blind passaging, we generated cell lines stably infected by these mosquito viruses which then generated abundant viral siRNAs and piRNAs that resemble the native mosquito viral small RNA patterns. This mosquito small RNA genomics approach augments surveillance approaches for emerging infectious diseases.
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3
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de Faria IJS, de Almeida JPP, Marques JT. Impact of symbiotic insect-specific viruses on mosquito vector competence for arboviruses. CURRENT OPINION IN INSECT SCIENCE 2024; 63:101194. [PMID: 38522648 DOI: 10.1016/j.cois.2024.101194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 03/18/2024] [Accepted: 03/19/2024] [Indexed: 03/26/2024]
Abstract
Mosquitoes are vectors for arboviruses, such as dengue, Zika, and Chikungunya. Symbiotic interactions can affect the intrinsic ability of mosquitoes to acquire and transmit arboviruses, referred to as vector competence. Insect-specific viruses (ISVs) are commonly found in symbiotic associations with mosquitoes in the wild and can affect many aspects of mosquito biology. Here, we review current knowledge on the effects of symbiotic ISV-mosquito interactions on vector competence. We discuss potential mechanisms underlying these interactions and their implications for shaping new biological control strategies. Finally, we highlight the need for field data analyzing the circulation of ISVs in mosquitoes associated with mechanistic studies in the laboratory.
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Affiliation(s)
- Isaque J S de Faria
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, Brazil
| | - João P P de Almeida
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, Brazil
| | - João T Marques
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, Brazil; Université de Strasbourg, INSERM U1257, CNRS UPR9022, 67084 Strasbourg, France.
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4
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Wang H, Chen Q, Wei T. Complex interactions among insect viruses-insect vector-arboviruses. INSECT SCIENCE 2024; 31:683-693. [PMID: 37877630 DOI: 10.1111/1744-7917.13285] [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: 07/09/2023] [Revised: 09/04/2023] [Accepted: 09/11/2023] [Indexed: 10/26/2023]
Abstract
Insects are the host or vector of diverse viruses including those that infect vertebrates, plants, and fungi. Insect viruses reside inside their insect hosts and are vertically transmitted from parent to offspring. The insect virus-host relationship is intricate, as these viruses can impact various aspects of insect biology, such as development, reproduction, sex ratios, and immunity. Arthropod-borne viruses (arboviruses) that cause substantial global health or agricultural problems can also be vertically transmitted to insect vector progeny. Multiple infections with insect viruses and arboviruses are common in nature. Such coinfections involve complex interactions, including synergism, dependence, and antagonism. Recent studies have shed light on the influence of insect viruses on the competence of insect vectors for arboviruses. In this review, we focus on the biological effects of insect viruses on the transmission of arboviruses by insects. We also discuss the potential mechanisms by which insect viruses affect the ability of hosts to transmit arboviruses, as well as potential strategies for disease control through manipulation of insect viruses. Analyses of the interactions among insect vectors, insect viruses and arboviruses will provide new opportunities for development of innovative strategies to control arbovirus transmission.
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Affiliation(s)
- Hui Wang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Vector-borne Virus Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Qian Chen
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Vector-borne Virus Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Taiyun Wei
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Vector-borne Virus Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
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Wang LL, Cheng Q, Newton ND, Wolfinger MT, Morgan MS, Slonchak A, Khromykh AA, Cheng TY, Parry RH. Xinyang flavivirus, from Haemaphysalis flava ticks in Henan Province, China, defines a basal, likely tick-only Orthoflavivirus clade. J Gen Virol 2024; 105:001991. [PMID: 38809251 PMCID: PMC11165663 DOI: 10.1099/jgv.0.001991] [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: 03/02/2024] [Accepted: 05/08/2024] [Indexed: 05/30/2024] Open
Abstract
Tick-borne orthoflaviviruses (TBFs) are classified into three conventional groups based on genetics and ecology: mammalian, seabird and probable-TBF group. Recently, a fourth basal group has been identified in Rhipicephalus ticks from Africa: Mpulungu flavivirus (MPFV) in Zambia and Ngoye virus (NGOV) in Senegal. Despite attempts, isolating these viruses in vertebrate and invertebrate cell lines or intracerebral injection of newborn mice with virus-containing homogenates has remained unsuccessful. In this study, we report the discovery of Xinyang flavivirus (XiFV) in Haemaphysalis flava ticks from Xìnyáng, Henan Province, China. Phylogenetic analysis shows that XiFV was most closely related to MPFV and NGOV, marking the first identification of this tick orthoflavivirus group in Asia. We developed a reverse transcriptase quantitative PCR assay to screen wild-collected ticks and egg clutches, with absolute infection rates of 20.75 % in adult females and 15.19 % in egg clutches, suggesting that XiFV could be potentially spread through transovarial transmission. To examine potential host range, dinucleotide composition analyses revealed that XiFV, MPFV and NGOV share a closer composition to classical insect-specific orthoflaviviruses than to vertebrate-infecting TBFs, suggesting that XiFV could be a tick-only orthoflavivirus. Additionally, both XiFV and MPFV lack a furin cleavage site in the prM protein, unlike other TBFs, suggesting these viruses might exist towards a biased immature particle state. To examine this, chimeric Binjari virus with XIFV-prME (bXiFV) was generated, purified and analysed by SDS-PAGE and negative-stain transmission electron microscopy, suggesting prototypical orthoflavivirus size (~50 nm) and bias towards uncleaved prM. In silico structural analyses of the 3'-untranslated regions show that XiFV forms up to five pseudo-knot-containing stem-loops and a prototypical orthoflavivirus dumbbell element, suggesting the potential for multiple exoribonuclease-resistant RNA structures.
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Affiliation(s)
- Lan-Lan Wang
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province, PR China
| | - Qia Cheng
- Children’s Medical Center, Hunan Provincial People’s Hospital, Changsha, PR China
| | - Natalee D. Newton
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Michael T. Wolfinger
- Department of Theoretical Chemistry, University of Vienna, Vienna, Austria
- Research Group Bioinformatics and Computational Biology, Faculty of Computer Science, University of Vienna, Vienna, Austria
- Bioinformatics Group, Department of Computer Science, University of Freiburg, Freiburg, Germany
- RNA Forecast e.U., Vienna, Austria
| | - Mahali S. Morgan
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
| | - Andrii Slonchak
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Alexander A. Khromykh
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
- GVN Center of Excellence, Australian Infectious Diseases Research Centre, Brisbane, QLD, Australia
| | - Tian-Yin Cheng
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province, PR China
| | - Rhys H. Parry
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
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Morel C, Gil P, Exbrayat A, Loire E, Charriat F, Prepoint B, Condachou C, Gimonneau G, Fall AG, Biteye B, Seck MT, Eloit M, Gutierrez S. Host influence on the eukaryotic virome of sympatric mosquitoes and abundance of diverse viruses with a broad host range. PLoS One 2024; 19:e0300915. [PMID: 38687731 PMCID: PMC11060559 DOI: 10.1371/journal.pone.0300915] [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: 11/13/2023] [Accepted: 03/01/2024] [Indexed: 05/02/2024] Open
Abstract
Mosquitoes harbor a large diversity of eukaryotic viruses. Those viromes probably influence mosquito physiology and the transmission of human pathogens. Nevertheless, their ecology remains largely unstudied. Here, we address two key questions in virome ecology. First, we assessed the influence of mosquito species on virome taxonomic diversity and relative abundance. Contrary to most previous studies, the potential effect of the habitat was explicitly included. Thousands of individuals of Culex poicilipes and Culex tritaeniorhynchus, two vectors of viral diseases, were concomitantly sampled in three habitats over two years. A total of 95 viral taxa from 25 families were identified with meta-transcriptomics, with 75% of taxa shared by both mosquitoes. Viromes significantly differed by mosquito species but not by habitat. Differences were largely due to changes in relative abundance of shared taxa. Then, we studied the diversity of viruses with a broad host range. We searched for viral taxa shared by the two Culex species and Aedes vexans, another disease vector, present in one of the habitats. Twenty-six out of the 163 viral taxa were found in the three mosquitoes. These taxa encompassed 14 families. A database analysis supported broad host ranges for many of those viruses, as well as a widespread geographical distribution. Thus, the viromes of mosquitoes from the same genera mainly differed in the relative abundance of shared taxa, whereas differences in viral diversity dominated between mosquito genera. Whether this new model of virome diversity and structure applies to other mosquito communities remains to be determined.
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Affiliation(s)
- Côme Morel
- ASTRE, Cirad, INRAe, Univ Montpellier, Montpellier, France
| | - Patricia Gil
- ASTRE, Cirad, INRAe, Univ Montpellier, Montpellier, France
| | | | - Etienne Loire
- ASTRE, Cirad, INRAe, Univ Montpellier, Montpellier, France
| | | | | | | | - Geoffrey Gimonneau
- ASTRE, Cirad, INRAe, Univ Montpellier, Montpellier, France
- Institut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches Vétérinaires (ISRA), Dakar-Hann, Senegal
| | - Assane Gueye Fall
- Institut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches Vétérinaires (ISRA), Dakar-Hann, Senegal
| | - Biram Biteye
- Institut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches Vétérinaires (ISRA), Dakar-Hann, Senegal
| | - Momar Talla Seck
- Institut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches Vétérinaires (ISRA), Dakar-Hann, Senegal
| | - Marc Eloit
- Institut Pasteur, Université Paris Cité, Pathogen Discovery Laboratory, Paris, France
- Institut Pasteur, Université Paris Cité, The WOAH (OIE) Collaborating Center for The Detection and Identification in Humans of Emerging Animal Pathogens, Paris, France
- Ecole Nationale Vétérinaire d’Alfort, University of Paris-Est, Maisons-Alfort, France
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7
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Rawle DJ, Hugo LE, Cox AL, Devine GJ, Suhrbier A. Generating prophylactic immunity against arboviruses in vertebrates and invertebrates. Nat Rev Immunol 2024:10.1038/s41577-024-01016-6. [PMID: 38570719 DOI: 10.1038/s41577-024-01016-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/29/2024] [Indexed: 04/05/2024]
Abstract
The World Health Organization recently declared a global initiative to control arboviral diseases. These are mainly caused by pathogenic flaviviruses (such as dengue, yellow fever and Zika viruses) and alphaviruses (such as chikungunya and Venezuelan equine encephalitis viruses). Vaccines represent key interventions for these viruses, with licensed human and/or veterinary vaccines being available for several members of both genera. However, a hurdle for the licensing of new vaccines is the epidemic nature of many arboviruses, which presents logistical challenges for phase III efficacy trials. Furthermore, our ability to predict or measure the post-vaccination immune responses that are sufficient for subclinical outcomes post-infection is limited. Given that arboviruses are also subject to control by the immune system of their insect vectors, several approaches are now emerging that aim to augment antiviral immunity in mosquitoes, including Wolbachia infection, transgenic mosquitoes, insect-specific viruses and paratransgenesis. In this Review, we discuss recent advances, current challenges and future prospects in exploiting both vertebrate and invertebrate immune systems for the control of flaviviral and alphaviral diseases.
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Affiliation(s)
- Daniel J Rawle
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Leon E Hugo
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Abigail L Cox
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Gregor J Devine
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
- GVN Centre of Excellence, Australian Infectious Disease Research Centre, Brisbane, Queensland, Australia
| | - Andreas Suhrbier
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia.
- GVN Centre of Excellence, Australian Infectious Disease Research Centre, Brisbane, Queensland, Australia.
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8
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De Coninck L, Matthijnssens J. The mosquito core virome: beyond the buzz. Trends Parasitol 2024; 40:201-202. [PMID: 38185596 DOI: 10.1016/j.pt.2023.12.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 12/22/2023] [Indexed: 01/09/2024]
Affiliation(s)
- Lander De Coninck
- KU Leuven, Department of Microbiology, Immunology, & Transplantation, Rega Institute, Division of Clinical & Epidemiological Virology, Laboratory of Viral Metagenomics, Leuven, Belgium
| | - Jelle Matthijnssens
- KU Leuven, Department of Microbiology, Immunology, & Transplantation, Rega Institute, Division of Clinical & Epidemiological Virology, Laboratory of Viral Metagenomics, Leuven, Belgium.
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9
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Dabo S, Henrion-Lacritick A, Lecuyer A, Jiolle D, Paupy C, Ayala D, da Veiga Leal S, Badolo A, Vega-Rúa A, Sylla M, Akorli J, Otoo S, Lutomiah J, Sang R, Mutebi JP, Saleh MC, Rose NH, McBride CS, Lambrechts L. Extensive variation and strain-specificity in dengue virus susceptibility among African Aedes aegypti populations. PLoS Negl Trop Dis 2024; 18:e0011862. [PMID: 38527081 PMCID: PMC10994562 DOI: 10.1371/journal.pntd.0011862] [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: 12/13/2023] [Revised: 04/04/2024] [Accepted: 03/15/2024] [Indexed: 03/27/2024] Open
Abstract
African populations of the mosquito Aedes aegypti are usually considered less susceptible to infection by human-pathogenic flaviviruses than globally invasive populations found outside Africa. Although this contrast has been well documented for Zika virus (ZIKV), it is unclear to what extent it is true for dengue virus (DENV), the most prevalent flavivirus of humans. Addressing this question is complicated by substantial genetic diversity among DENV strains, most notably in the form of four genetic types (DENV1 to DENV4), that can lead to genetically specific interactions with mosquito populations. Here, we carried out a survey of DENV susceptibility using a panel of seven field-derived Ae. aegypti colonies from across the African range of the species and a colony from Guadeloupe, French West Indies as non-African reference. We found considerable variation in the ability of African Ae. aegypti populations to acquire and replicate a panel of six DENV strains spanning the four DENV types. Although African Ae. aegypti populations were generally less susceptible than the reference non-African population from Guadeloupe, in several instances some African populations were equally or more susceptible than the Guadeloupe population. Moreover, the relative level of susceptibility between African mosquito populations depended on the DENV strain, indicating genetically specific interactions. We conclude that unlike ZIKV susceptibility, there is no clear-cut dichotomy in DENV susceptibility between African and non-African Ae. aegypti. DENV susceptibility of African Ae. aegypti populations is highly heterogeneous and largely governed by the specific pairing of mosquito population and DENV strain.
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Affiliation(s)
- Stéphanie Dabo
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Insect-Virus Interactions Unit, Paris, France
| | | | - Alicia Lecuyer
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Insect-Virus Interactions Unit, Paris, France
| | - Davy Jiolle
- MIVEGEC, Montpellier University, IRD, CNRS, Montpellier, France
- Centre Interdisciplinaire de Recherches Médicales de Franceville, Franceville, Gabon
| | - Christophe Paupy
- MIVEGEC, Montpellier University, IRD, CNRS, Montpellier, France
- Centre Interdisciplinaire de Recherches Médicales de Franceville, Franceville, Gabon
| | - Diego Ayala
- MIVEGEC, Montpellier University, IRD, CNRS, Montpellier, France
- Centre Interdisciplinaire de Recherches Médicales de Franceville, Franceville, Gabon
| | - Silvânia da Veiga Leal
- Laboratório de Entomologia Médica, Instituto Nacional de Saúde Pública, Praia, Cabo Verde
| | - Athanase Badolo
- Laboratoire d’Entomologie Fondamentale et Appliquée, Université Joseph Ki-Zerbo, Ouagadougou, Burkina Faso
| | - Anubis Vega-Rúa
- Institut Pasteur of Guadeloupe, Laboratory of Vector Control Research, Transmission Reservoir and Pathogens Diversity Unit, Morne Jolivière, Guadeloupe, France
| | - Massamba Sylla
- Department of Livestock Sciences and Techniques, University Sine Saloum El Hadji Ibrahima NIASS, Kaffrine, Senegal
| | - Jewelna Akorli
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Sampson Otoo
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Joel Lutomiah
- Arbovirus/Viral Hemorrhagic Fevers Laboratory, Center for Virus Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Rosemary Sang
- Arbovirus/Viral Hemorrhagic Fevers Laboratory, Center for Virus Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - John-Paul Mutebi
- Department of Solid Waste Management, Mosquito Control Division, Miami, Florida, United States of America
| | - Maria-Carla Saleh
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Viruses and RNA Interference Unit, Paris, France
| | - Noah H. Rose
- Department of Ecology & Evolutionary Biology, Princeton University, Princeton, New Jersey, United States of America
- Princeton Neuroscience Institute, Princeton University, Princeton, New Jersey, United States of America
| | - Carolyn S. McBride
- Department of Ecology & Evolutionary Biology, Princeton University, Princeton, New Jersey, United States of America
- Princeton Neuroscience Institute, Princeton University, Princeton, New Jersey, United States of America
| | - Louis Lambrechts
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Insect-Virus Interactions Unit, Paris, France
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10
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Ribeiro AC, Martins L, Silva H, Freitas MN, Santos M, Gonçalves E, Sousa A, Prazeres I, Santos A, Cruz AC, Silva S, Chiang J, Casseb L, Carvalho V. Viral Interference between the Insect-Specific Virus Brejeira and the Saint Louis Encephalitis Virus In Vitro. Viruses 2024; 16:210. [PMID: 38399986 PMCID: PMC10893346 DOI: 10.3390/v16020210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/21/2024] [Accepted: 01/27/2024] [Indexed: 02/25/2024] Open
Abstract
The Saint Louis encephalitis virus (SLEV) is an encephalitogenic arbovirus (Flaviviridae family) that has a wide geographical distribution in the western hemisphere, especially in the Americas. The negevirus Brejeira (BREV) was isolated for the first time in Brazil in 2005. This study aimed to verify the existence of a possible interfering effect of BREV on the course of SLEV infection and vice versa. We used clone C6/36 cells. Three combinations of MOIs were used (SLEV 0.1 × BREV 1; SLEV 1 × BREV 0.1; SLEV 1 × BREV 1) in the kinetics of up to 7 days and then the techniques of indirect immunofluorescence (IFA), a plaque assay on Vero cells, and RT-PCR were performed. Our results showed that the cytopathic effect (CPE) caused by BREV was more pronounced than the CPE caused by SLEV. Results of IFA, the plaque assay, and RT-PCR showed the suppression of SLEV replication in the co-infection condition in all the MOI combinations used. The SLEV suppression was dose-dependent. Therefore, the ISV Brejeira can suppress SLEV replication in Aedes albopictus cells, but SLEV does not negatively interfere with BREV replication.
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Affiliation(s)
- Ana Cláudia Ribeiro
- Post-Graduation Program in Virology, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (L.M.); (M.N.F.); (A.C.C.); (J.C.); (L.C.)
| | - Lívia Martins
- Post-Graduation Program in Virology, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (L.M.); (M.N.F.); (A.C.C.); (J.C.); (L.C.)
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (H.S.); (M.S.); (E.G.); (A.S.); (I.P.); (A.S.); (S.S.)
| | - Heloisa Silva
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (H.S.); (M.S.); (E.G.); (A.S.); (I.P.); (A.S.); (S.S.)
| | - Maria Nazaré Freitas
- Post-Graduation Program in Virology, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (L.M.); (M.N.F.); (A.C.C.); (J.C.); (L.C.)
| | - Maissa Santos
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (H.S.); (M.S.); (E.G.); (A.S.); (I.P.); (A.S.); (S.S.)
| | - Ercília Gonçalves
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (H.S.); (M.S.); (E.G.); (A.S.); (I.P.); (A.S.); (S.S.)
| | - Alana Sousa
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (H.S.); (M.S.); (E.G.); (A.S.); (I.P.); (A.S.); (S.S.)
| | - Ivy Prazeres
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (H.S.); (M.S.); (E.G.); (A.S.); (I.P.); (A.S.); (S.S.)
| | - Alessandra Santos
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (H.S.); (M.S.); (E.G.); (A.S.); (I.P.); (A.S.); (S.S.)
| | - Ana Cecilia Cruz
- Post-Graduation Program in Virology, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (L.M.); (M.N.F.); (A.C.C.); (J.C.); (L.C.)
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (H.S.); (M.S.); (E.G.); (A.S.); (I.P.); (A.S.); (S.S.)
| | - Sandro Silva
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (H.S.); (M.S.); (E.G.); (A.S.); (I.P.); (A.S.); (S.S.)
| | - Jannifer Chiang
- Post-Graduation Program in Virology, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (L.M.); (M.N.F.); (A.C.C.); (J.C.); (L.C.)
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (H.S.); (M.S.); (E.G.); (A.S.); (I.P.); (A.S.); (S.S.)
| | - Livia Casseb
- Post-Graduation Program in Virology, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (L.M.); (M.N.F.); (A.C.C.); (J.C.); (L.C.)
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (H.S.); (M.S.); (E.G.); (A.S.); (I.P.); (A.S.); (S.S.)
| | - Valéria Carvalho
- Post-Graduation Program in Virology, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (L.M.); (M.N.F.); (A.C.C.); (J.C.); (L.C.)
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030-000, Pará, Brazil; (H.S.); (M.S.); (E.G.); (A.S.); (I.P.); (A.S.); (S.S.)
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11
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Suzuki Y, Suzuki T, Miura F, Reyes JIL, Asin ICA, Mitsunari W, Uddin MM, Sekii Y, Watanabe K. No detectable fitness cost of infection by cell-fusing agent virus in Aedes aegypti mosquitoes. ROYAL SOCIETY OPEN SCIENCE 2024; 11:231373. [PMID: 38204783 PMCID: PMC10776230 DOI: 10.1098/rsos.231373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 12/06/2023] [Indexed: 01/12/2024]
Abstract
Aedes mosquitoes are well-known vectors of arthropod-borne viruses (arboviruses). Mosquitoes are more frequently infected with insect-specific viruses (ISVs) that cannot infect vertebrates. Some ISVs interfere with arbovirus replication in mosquito vectors, which has gained attention for potential use against arbovirus transmission. Cell-fusing agent virus (CFAV), a widespread ISV, can reduce arbovirus dissemination in Ae. aegypti. However, vectorial capacity is largely governed by other parameters than pathogen load, including mosquito survival and biting behaviour. Understanding how ISVs impact these mosquito fitness-related traits is critical to assess the potential risk of using ISVs as biological agents. Here, we examined the effects of CFAV infection on Ae. aegypti mosquito fitness. We found no significant reduction in mosquito survival, blood-feeding behaviour and reproduction, suggesting that Ae. aegypti is tolerant to CFAV. The only detectable effect was a slight increase in human attraction of CFAV-infected females in one out of eight trials. Viral tolerance is beneficial for introducing CFAV into natural mosquito populations, whereas the potential increase in biting activity must be further investigated. Our results provide the first insight into the link between ISVs and Aedes mosquito fitness and highlight the importance of considering all aspects of vectorial capacity for arbovirus control using ISVs.
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Affiliation(s)
- Yasutsugu Suzuki
- Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
| | - Takahiro Suzuki
- Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
- Graduate School of Science and Engineering, Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
| | - Fuminari Miura
- Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands
| | - Jerica Isabel L. Reyes
- Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
- Graduate School of Science and Engineering, Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
| | - Irish Coleen A. Asin
- Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
- Graduate School of Science and Engineering, Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
| | - Wataru Mitsunari
- Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
- Faculty of Engineering, Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
| | - Mohammad Mosleh Uddin
- Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
- Graduate School of Science and Engineering, Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
- Department of Biochemistry and Molecular Biology (BMB), Faculty of Life Science, Mawlana Bhashani Science and Technology University (MBSTU), Santosh, Tangail, Bangladesh
| | - Yu Sekii
- Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
| | - Kozo Watanabe
- Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 3, Matsuyama, Ehime, Japan
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12
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Koh C, Saleh MC. Translating mosquito viromes into vector management strategies. Trends Parasitol 2024; 40:10-20. [PMID: 38065789 DOI: 10.1016/j.pt.2023.11.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 01/06/2024]
Abstract
Mosquitoes are best known for transmitting human and animal viruses. However, they also harbour mosquito-specific viruses (MSVs) as part of their microbiota. These are a group of viruses whose diversity and prevalence overshadow their medically relevant counterparts. Although metagenomics sequencing has remarkably accelerated the discovery of these viruses, what we know about them is often limited to sequence information, leaving much of their fundamental biology to be explored. Understanding the biology and ecology of MSVs can enlighten our knowledge of virus-virus interactions and lead to new innovations in the management of mosquito-borne viral diseases. We retrace the history of their discovery and discuss research milestones that would line the path from mosquito virome knowledge to vector management strategies.
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Affiliation(s)
- Cassandra Koh
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Viruses and RNA Interference Unit, 75015 Paris, France.
| | - Maria-Carla Saleh
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Viruses and RNA Interference Unit, 75015 Paris, France
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13
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Lewis J, Gallichotte EN, Randall J, Glass A, Foy BD, Ebel GD, Kading RC. Intrinsic factors driving mosquito vector competence and viral evolution: a review. Front Cell Infect Microbiol 2023; 13:1330600. [PMID: 38188633 PMCID: PMC10771300 DOI: 10.3389/fcimb.2023.1330600] [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: 10/31/2023] [Accepted: 12/08/2023] [Indexed: 01/09/2024] Open
Abstract
Mosquitoes are responsible for the transmission of numerous viruses of global health significance. The term "vector competence" describes the intrinsic ability of an arthropod vector to transmit an infectious agent. Prior to transmission, the mosquito itself presents a complex and hostile environment through which a virus must transit to ensure propagation and transmission to the next host. Viruses imbibed in an infectious blood meal must pass in and out of the mosquito midgut, traffic through the body cavity or hemocoel, invade the salivary glands, and be expelled with the saliva when the vector takes a subsequent blood meal. Viruses encounter physical, cellular, microbial, and immunological barriers, which are influenced by the genetic background of the mosquito vector as well as environmental conditions. Collectively, these factors place significant selective pressure on the virus that impact its evolution and transmission. Here, we provide an overview of the current state of the field in understanding the mosquito-specific factors that underpin vector competence and how each of these mechanisms may influence virus evolution.
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Affiliation(s)
- Juliette Lewis
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Emily N. Gallichotte
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Jenna Randall
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Arielle Glass
- Department of Cellular and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Brian D. Foy
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Gregory D. Ebel
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Rebekah C. Kading
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, United States
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14
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Dabo S, Henrion-Lacritick A, Lecuyer A, Jiolle D, Paupy C, Ayala D, da Veiga Leal S, Badolo A, Vega-Rúa A, Sylla M, Akorli J, Otoo S, Lutomiah J, Sang R, Mutebi JP, Saleh MC, Rose NH, McBride CS, Lambrechts L. Extensive variation and strain-specificity in dengue virus susceptibility among African Aedes aegypti populations. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.14.571617. [PMID: 38168387 PMCID: PMC10760182 DOI: 10.1101/2023.12.14.571617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
African populations of the mosquito Aedes aegypti are usually considered less susceptible to infection by human-pathogenic flaviviruses than globally invasive populations found outside Africa. Although this contrast has been well documented for Zika virus (ZIKV), it is unclear to what extent it is true for dengue virus (DENV), the most prevalent flavivirus of humans. Addressing this question is complicated by substantial genetic diversity among DENV strains, most notably in the form of four genetic types (DENV1 to DENV4), that can lead to genetically specific interactions with mosquito populations. Here, we carried out a continent-wide survey of DENV susceptibility using a panel of field-derived Ae. aegypti colonies from across the African range of the species and a colony from Guadeloupe, French West Indies as non-African reference. We found considerable variation in the ability of African Ae. aegypti populations to acquire and replicate a panel of six DENV strains spanning the four DENV types. Although African Ae. aegypti populations were generally less susceptible than the reference non-African population from Guadeloupe, in several instances some African populations were equally or more susceptible than the Guadeloupe population. Moreover, the relative level of susceptibility between African mosquito populations depended on the DENV strain, indicating genetically specific interactions. We conclude that unlike ZIKV susceptibility, there is no clear-cut dichotomy in DENV susceptibility between African and non-African Ae. aegypti. DENV susceptibility of African Ae. aegypti populations is highly heterogeneous and largely governed by the specific pairing of mosquito population and DENV strain.
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Affiliation(s)
- Stéphanie Dabo
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Insect-Virus Interactions Unit, Paris, France
| | | | - Alicia Lecuyer
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Insect-Virus Interactions Unit, Paris, France
| | - Davy Jiolle
- MIVEGEC, Montpellier University, IRD, CNRS, Montpellier, France
- Centre Interdisciplinaire de Recherches Médicales de Franceville, Franceville, Gabon
| | - Christophe Paupy
- MIVEGEC, Montpellier University, IRD, CNRS, Montpellier, France
- Centre Interdisciplinaire de Recherches Médicales de Franceville, Franceville, Gabon
| | - Diego Ayala
- MIVEGEC, Montpellier University, IRD, CNRS, Montpellier, France
- Centre Interdisciplinaire de Recherches Médicales de Franceville, Franceville, Gabon
| | - Silvânia da Veiga Leal
- Laboratório de Entomologia Médica, Instituto Nacional de Saúde Pública, Praia, Cabo Verde
| | - Athanase Badolo
- Laboratoire d’Entomologie Fondamentale et Appliquée, Université Joseph Ki-Zerbo, Ouagadougou, Burkina Faso
| | - Anubis Vega-Rúa
- Institut Pasteur of Guadeloupe, Laboratory of Vector Control Research, Transmission Reservoir and Pathogens Diversity Unit, Morne Jolivière, Guadeloupe, France
| | - Massamba Sylla
- Department of Livestock Sciences and Techniques, University Sine Saloum El Hadji Ibrahima NIASS, Kaffrine, Senegal
| | - Jewelna Akorli
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Sampson Otoo
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Joel Lutomiah
- Arbovirus/Viral Hemorrhagic Fevers Laboratory, Center for Virus Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Rosemary Sang
- Arbovirus/Viral Hemorrhagic Fevers Laboratory, Center for Virus Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - John-Paul Mutebi
- Centers for Disease Control and Prevention, Fort Collins, Colorado, United States of America
| | - Maria-Carla Saleh
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Viruses and RNA Interference Unit, Paris, France
| | - Noah H. Rose
- Department of Ecology & Evolutionary Biology, Princeton University, Princeton, New Jersey, United States of America
- Princeton Neuroscience Institute, Princeton University, Princeton, New Jersey, United States of America
- Current address: Department of Ecology, Behavior, and Evolution, University of California San Diego, La Jolla, California, United States of America
| | - Carolyn S. McBride
- Department of Ecology & Evolutionary Biology, Princeton University, Princeton, New Jersey, United States of America
- Princeton Neuroscience Institute, Princeton University, Princeton, New Jersey, United States of America
| | - Louis Lambrechts
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Insect-Virus Interactions Unit, Paris, France
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15
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Zhou N, Huang E, Guo X, Xiong Y, Xie J, Cai T, Du Y, Wu Q, Guo S, Han W, Zhang H, Xing D, Zhao T, Jiang Y. Cell fusing agent virus isolated from Aag2 cells does not vertically transmit in Aedes aegypti via artificial infection. Parasit Vectors 2023; 16:402. [PMID: 37932781 PMCID: PMC10626676 DOI: 10.1186/s13071-023-06033-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/25/2023] [Indexed: 11/08/2023] Open
Abstract
BACKGROUND Cell fusing agent virus (CFAV) was the first insect-specific virus to be characterized, and has been reported to negatively influence the growth of arboviruses such as dengue, Zika, and La Cross, making it a promising biocontrol agent for mosquito-borne disease prevention. Aedes aegypti Aag2 cells were naturally infected with CFAV. However, the ability of this virus to stably colonize an Ae. aegypti population via artificial infection and how it influences the vector competence of this mosquito have yet to be demonstrated. METHODS CFAV used in this study was harvested from Aag2 cells and its complete genome sequence was obtained by polymerase chain reaction and rapid amplification of complementary DNA ends, followed by Sanger sequencing. Phylogenetic analysis of newly identified CFAV sequences and other sequences retrieved from GenBank was performed. CFAV stock was inoculated into Ae. aegypti by intrathoracic injection, the survival of parental mosquitoes was monitored and CFAV copies in the whole bodies, ovaries, and carcasses of the injected F0 generation and in the whole bodies of the F1 generation on different days were examined by reverse transcription-quantitative polymerase chain reaction. RESULTS The virus harvested from Aag2 cells comprised a mixture of three CFAV strains. All genome sequences of CFAV derived from Aag2 cells clustered into one clade but were far from those isolated or identified from Ae. aegypti. Aag2-derived CFAV efficiently replicated in the mosquito body and did not attenuate the survival of Ae. aegypti. However, the viral load in the ovarian tissues was much lower than that in other tissues and the virus could not passage to the offspring by vertical transmission. CONCLUSIONS The results of this study demonstrate that Aag2-derived CFAV was not vertically transmitted in Ae. aegypti and provide valuable information on the colonization of mosquitoes by this virus.
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Affiliation(s)
- Ningxin Zhou
- Public Health School of Fujian Medical University, Fuzhou, 350122, China
- Department of Vector Biology and Control, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China
| | - Enjiong Huang
- Fuzhou International Travel Healthcare Center, Fuzhou, 350001, China
| | - Xiaoxia Guo
- Department of Vector Biology and Control, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China
| | - Yiping Xiong
- Department of Vector Biology and Control, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China
| | - Jingwen Xie
- Public Health School of Fujian Medical University, Fuzhou, 350122, China
- Department of Vector Biology and Control, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China
| | - Tong Cai
- Department of Vector Biology and Control, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China
| | - Yutong Du
- Department of Vector Biology and Control, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China
| | - Qixing Wu
- Department of Vector Biology and Control, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Sihan Guo
- Department of Vector Biology and Control, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Wanrong Han
- Department of Vector Biology and Control, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China
- Life Science College, Southwest Forestry University, Kunming, 650224, China
| | - Hengduan Zhang
- Department of Vector Biology and Control, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China
| | - Dan Xing
- Department of Vector Biology and Control, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China
| | - Tongyan Zhao
- Department of Vector Biology and Control, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China.
| | - Yuting Jiang
- Department of Vector Biology and Control, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China.
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16
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Shi H, Yu X, Cheng G. Impact of the microbiome on mosquito-borne diseases. Protein Cell 2023; 14:743-761. [PMID: 37186167 PMCID: PMC10599646 DOI: 10.1093/procel/pwad021] [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: 02/13/2023] [Accepted: 04/10/2023] [Indexed: 05/17/2023] Open
Abstract
Mosquito-borne diseases present a significant threat to human health, with the possibility of outbreaks of new mosquito-borne diseases always looming. Unfortunately, current measures to combat these diseases such as vaccines and drugs are often either unavailable or ineffective. However, recent studies on microbiomes may reveal promising strategies to fight these diseases. In this review, we examine recent advances in our understanding of the effects of both the mosquito and vertebrate microbiomes on mosquito-borne diseases. We argue that the mosquito microbiome can have direct and indirect impacts on the transmission of these diseases, with mosquito symbiotic microorganisms, particularly Wolbachia bacteria, showing potential for controlling mosquito-borne diseases. Moreover, the skin microbiome of vertebrates plays a significant role in mosquito preferences, while the gut microbiome has an impact on the progression of mosquito-borne diseases in humans. As researchers continue to explore the role of microbiomes in mosquito-borne diseases, we highlight some promising future directions for this field. Ultimately, a better understanding of the interplay between mosquitoes, their hosts, pathogens, and the microbiomes of mosquitoes and hosts may hold the key to preventing and controlling mosquito-borne diseases.
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Affiliation(s)
- Huicheng Shi
- Tsinghua University-Peking University Joint Center for Life Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen 518000, China
| | - Xi Yu
- Tsinghua University-Peking University Joint Center for Life Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen 518000, China
| | - Gong Cheng
- Tsinghua University-Peking University Joint Center for Life Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen 518000, China
- Department of Parasitology, School of Basic Medical Sciences, Central South University, Changsha 410013, China
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17
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Merkling SH, Crist AB, Henrion-Lacritick A, Frangeul L, Couderc E, Gausson V, Blanc H, Bergman A, Baidaliuk A, Romoli O, Saleh MC, Lambrechts L. Multifaceted contributions of Dicer2 to arbovirus transmission by Aedes aegypti. Cell Rep 2023; 42:112977. [PMID: 37573505 DOI: 10.1016/j.celrep.2023.112977] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 06/20/2023] [Accepted: 07/28/2023] [Indexed: 08/15/2023] Open
Abstract
Arthropod-borne viruses (arboviruses) transmitted by Aedes aegypti mosquitoes are an increasing threat to global health. The small interfering RNA (siRNA) pathway is considered the main antiviral immune pathway of insects, but its effective impact on arbovirus transmission is surprisingly poorly understood. Here, we use CRISPR-Cas9-mediated gene editing in vivo to mutate Dicer2, a gene encoding the RNA sensor and key component of the siRNA pathway. The loss of Dicer2 enhances early viral replication and systemic viral dissemination of four medically significant arboviruses (chikungunya, Mayaro, dengue, and Zika viruses) representing two viral families. However, Dicer2 mutants and wild-type mosquitoes display overall similar levels of vector competence. In addition, Dicer2 mutants undergo significant virus-induced mortality during infection with chikungunya virus. Together, our results define a multifaceted role for Dicer2 in the transmission of arboviruses by Ae. aegypti mosquitoes and pave the way for further mechanistic investigations.
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Affiliation(s)
- Sarah Hélène Merkling
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Insect-Virus Interactions Unit, 75015 Paris, France
| | - Anna Beth Crist
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Insect-Virus Interactions Unit, 75015 Paris, France
| | - Annabelle Henrion-Lacritick
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Viruses and RNA Interference Unit, 75015 Paris, France
| | - Lionel Frangeul
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Viruses and RNA Interference Unit, 75015 Paris, France
| | - Elodie Couderc
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Insect-Virus Interactions Unit, 75015 Paris, France; Sorbonne Université, Collège Doctoral, 75005 Paris, France
| | - Valérie Gausson
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Viruses and RNA Interference Unit, 75015 Paris, France
| | - Hervé Blanc
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Viruses and RNA Interference Unit, 75015 Paris, France
| | - Alexander Bergman
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Insect-Virus Interactions Unit, 75015 Paris, France
| | - Artem Baidaliuk
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Insect-Virus Interactions Unit, 75015 Paris, France; Sorbonne Université, Collège Doctoral, 75005 Paris, France
| | - Ottavia Romoli
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Viruses and RNA Interference Unit, 75015 Paris, France
| | - Maria-Carla Saleh
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Viruses and RNA Interference Unit, 75015 Paris, France.
| | - Louis Lambrechts
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Insect-Virus Interactions Unit, 75015 Paris, France.
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18
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Gil P, Exbrayat A, Loire E, Rakotoarivony I, Charriat F, Morel C, Baldet T, Boisseau M, Marie A, Frances B, L’Ambert G, Bessat M, Otify Y, Goffredo M, Mancini G, Busquets N, Birnberg L, Talavera S, Aranda C, Ayari E, Mejri S, Sghaier S, Bennouna A, El Rhaffouli H, Balenghien T, Chlyeh G, Fassi Fihri O, Reveillaud J, Simonin Y, Eloit M, Gutierrez S. Spatial scale influences the distribution of viral diversity in the eukaryotic virome of the mosquito Culex pipiens. Virus Evol 2023; 9:vead054. [PMID: 37719779 PMCID: PMC10504824 DOI: 10.1093/ve/vead054] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 06/22/2023] [Accepted: 08/23/2023] [Indexed: 09/19/2023] Open
Abstract
Our knowledge of the diversity of eukaryotic viruses has recently undergone a massive expansion. This diversity could influence host physiology through yet unknown phenomena of potential interest to the fields of health and food production. However, the assembly processes of this diversity remain elusive in the eukaryotic viromes of terrestrial animals. This situation hinders hypothesis-driven tests of virome influence on host physiology. Here, we compare taxonomic diversity between different spatial scales in the eukaryotic virome of the mosquito Culex pipiens. This mosquito is a vector of human pathogens worldwide. The experimental design involved sampling in five countries in Africa and Europe around the Mediterranean Sea and large mosquito numbers to ensure a thorough exploration of virus diversity. A group of viruses was found in all countries. This core group represented a relatively large and diverse fraction of the virome. However, certain core viruses were not shared by all host individuals in a given country, and their infection rates fluctuated between countries and years. Moreover, the distribution of coinfections in individual mosquitoes suggested random co-occurrence of those core viruses. Our results also suggested differences in viromes depending on geography, with viromes tending to cluster depending on the continent. Thus, our results unveil that the overlap in taxonomic diversity can decrease with spatial scale in the eukaryotic virome of C. pipiens. Furthermore, our results show that integrating contrasted spatial scales allows us to identify assembly patterns in the mosquito virome. Such patterns can guide future studies of virome influence on mosquito physiology.
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Affiliation(s)
- Patricia Gil
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Antoni Exbrayat
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Etienne Loire
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Ignace Rakotoarivony
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Florian Charriat
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Côme Morel
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Thierry Baldet
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Michel Boisseau
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | | | | | | | - Mohamed Bessat
- Department of Parasitology, Faculty of Veterinary Medicine, Alexandria University, Alexandria 5410012, Egypt
| | - Yehia Otify
- Department of Parasitology, Faculty of Veterinary Medicine, Alexandria University, Alexandria 5410012, Egypt
| | - Maria Goffredo
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise ‘G. Caporale’, Teramo 64100, Italy
| | - Giuseppe Mancini
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise ‘G. Caporale’, Teramo 64100, Italy
| | - Núria Busquets
- IRTA. Programa de Sanitat Animal. Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Spain
| | - Lotty Birnberg
- IRTA. Programa de Sanitat Animal. Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Spain
| | - Sandra Talavera
- IRTA. Programa de Sanitat Animal. Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Spain
| | - Carles Aranda
- IRTA. Programa de Sanitat Animal. Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Spain
- Servei de Control de Mosquits del Consell Comarcal del Baix Llobregat, Barcelona 08980, Spain
| | - Emna Ayari
- Institut de la Recherche Vétérinaire de Tunisie - Université Tunis El Manar, Tunis 1068, Tunisia
| | - Selma Mejri
- Institut de la Recherche Vétérinaire de Tunisie - Université Tunis El Manar, Tunis 1068, Tunisia
| | - Soufien Sghaier
- Institut de la Recherche Vétérinaire de Tunisie - Université Tunis El Manar, Tunis 1068, Tunisia
| | - Amal Bennouna
- Department of Animal Pathology and Public Health, Hassan II Agronomy & Veterinary Institute, Rabat BP 6202, Morocco
| | | | - Thomas Balenghien
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
- Department of Animal Pathology and Public Health, Hassan II Agronomy & Veterinary Institute, Rabat BP 6202, Morocco
| | - Ghita Chlyeh
- Département de Production, Protection et Biotechnologies Végétales, Unité de Zoologie, Institute of Agronomy and Veterinary Medicine Hassan II, Rabat BP 6202, Morocco
| | - Ouafaa Fassi Fihri
- Department of Animal Pathology and Public Health, Hassan II Agronomy & Veterinary Institute, Rabat BP 6202, Morocco
| | - Julie Reveillaud
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Yannick Simonin
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, Montpellier 34394, France
| | - Marc Eloit
- Institut Pasteur, Université Paris Cité, Pathogen Discovery Laboratory, Paris 75015, France
- Institut Pasteur, The OIE Collaborating Centre for Detection and Identification in Humans of Emerging Animal Pathogens, Paris 75724, France
- École nationale vétérinaire d’Alfort, Maisons-Alfort 94700, France
| | - Serafin Gutierrez
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
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19
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Wu Z, Liu J, Feng X, Zhang Y, Liu L, Niu G. Identification and Molecular Characteristics of a Novel Single-Stranded RNA Virus Isolated from Culex tritaeniorhynchus in China. Microbiol Spectr 2023; 11:e0053623. [PMID: 37358406 PMCID: PMC10433992 DOI: 10.1128/spectrum.00536-23] [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: 02/03/2023] [Accepted: 05/12/2023] [Indexed: 06/27/2023] Open
Abstract
Hubei mosquito virus 2 (HMV2) is a novel mosquito virus that was first identified in 2016 in Hubei Province, China. Until now, HMV2 has been shown to be endemic in some areas of China and Japan, but its biological characteristics, epidemiology, and pathogenicity are not yet known. This report describes the detection of HMV2 in mosquitoes that were collected in Shandong Province in 2019 and presents the first isolation and molecular characterization of the virus. In this study, a total of 2,813 mosquitoes were collected and then divided into 57 pools, according to location and species. qRT-PCR and nested PCR were performed to confirm the presence of HMV2, and its genomic features, phylogenetic relationships, growth characteristics, and potential pathogenicity were further analyzed. The results showed that HMV2 was detected in 28 of the 57 mosquito pools and that the minimum infection rate (MIR) for HMV2 was 1.00% (28/2,813). A HMV2 strain and 14 viral partial sequences were obtained from the HMV2-positive pools, including one complete genome sequence. A phylogenetic analysis revealed that HMV2 from Shandong Province shared over 90% identity with other reported isolates and was closely related to the Culex inatomii luteo-like virus. IMPORTANCE Our study provided important epidemiological evidence for the epidemic of HMV2 in Shandong Province. Here, we report the first isolation and molecular characteristics of this virus and enrich our knowledge of the distribution of HMV2 in China.
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Affiliation(s)
- Zhen Wu
- School of Public Health, WeiFang Medical University, Weifang, China
| | - Jingyu Liu
- Yantai Center for Disease Control and Prevention, Yantai, China
| | - Xiuwei Feng
- School of Public Health, WeiFang Medical University, Weifang, China
| | - Yuli Zhang
- School of Public Health, WeiFang Medical University, Weifang, China
| | - Lin Liu
- Immune-Path Biotechnology (Suzhou) Co., Ltd., Suzhou, China
| | - Guoyu Niu
- School of Public Health, WeiFang Medical University, Weifang, China
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Aragão CF, da Silva SP, do Nascimento BLS, da Silva FS, Nunes Neto JP, Pinheiro VCS, Cruz ACR. Shotgun Metagenomic Sequencing Reveals Virome Composition of Mosquitoes from a Transition Ecosystem of North-Northeast Brazil. Genes (Basel) 2023; 14:1443. [PMID: 37510347 PMCID: PMC10379392 DOI: 10.3390/genes14071443] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/08/2023] [Accepted: 07/09/2023] [Indexed: 07/30/2023] Open
Abstract
A wide diversity of pathogenic mosquito-borne viruses circulate in the Brazilian Amazon, and the intense deforestation can contribute to the spread of these viruses. In this context, this study aimed to investigate the viral diversity in mosquitoes of the genera Aedes, Culex, Haemagogus, and Sabethes from a transition area between the Amazon, Cerrado, and Caatinga biomes in Brazil. Metagenomic high-throughput sequencing was used to characterize the virome of 20 mosquito pools. A total of 15 virus-like genomes were identified, comprising species genomically close to insect-specific viruses of the families Iflaviridae, Metaviridae, Lispiviridae, Rhabdoviridae, Xinmoviridae, and Parvoviridae and species of plant viruses of the families Solemoviridae, Virgaviridae, and Partitiviridae. However, sequences of viruses associated with human and animal diseases were not detected. Most of the recovered genomes were divergent from those previously described. These findings reveal that there are a large number of unknown viruses to be explored in the middle-north of Brazil.
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Affiliation(s)
- Carine Fortes Aragão
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Secretariat of Health and Environment Surveillance, Ministry of Health, Ananindeua 67030-000, PA, Brazil
| | - Sandro Patroca da Silva
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Secretariat of Health and Environment Surveillance, Ministry of Health, Ananindeua 67030-000, PA, Brazil
| | - Bruna Laís Sena do Nascimento
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Secretariat of Health and Environment Surveillance, Ministry of Health, Ananindeua 67030-000, PA, Brazil
| | - Fábio Silva da Silva
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Secretariat of Health and Environment Surveillance, Ministry of Health, Ananindeua 67030-000, PA, Brazil
| | - Joaquim Pinto Nunes Neto
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Secretariat of Health and Environment Surveillance, Ministry of Health, Ananindeua 67030-000, PA, Brazil
| | | | - Ana Cecília Ribeiro Cruz
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Secretariat of Health and Environment Surveillance, Ministry of Health, Ananindeua 67030-000, PA, Brazil
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21
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Abbo SR, de Almeida JPP, Olmo RP, Balvers C, Griep JS, Linthout C, Koenraadt CJM, Silva BM, Fros JJ, Aguiar ERGR, Marois E, Pijlman GP, Marques JT. The virome of the invasive Asian bush mosquito Aedes japonicus in Europe. Virus Evol 2023; 9:vead041. [PMID: 37636319 PMCID: PMC10460169 DOI: 10.1093/ve/vead041] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/05/2023] [Accepted: 06/30/2023] [Indexed: 08/29/2023] Open
Abstract
The Asian bush mosquito Aedes japonicus is rapidly invading North America and Europe. Due to its potential to transmit multiple pathogenic arthropod-borne (arbo)viruses including Zika virus, West Nile virus, and chikungunya virus, it is important to understand the biology of this vector mosquito in more detail. In addition to arboviruses, mosquitoes can also carry insect-specific viruses that are receiving increasing attention due to their potential effects on host physiology and arbovirus transmission. In this study, we characterized the collection of viruses, referred to as the virome, circulating in Ae. japonicus populations in the Netherlands and France. Applying a small RNA-based metagenomic approach to Ae. japonicus, we uncovered a distinct group of viruses present in samples from both the Netherlands and France. These included one known virus, Ae. japonicus narnavirus 1 (AejapNV1), and three new virus species that we named Ae. japonicus totivirus 1 (AejapTV1), Ae. japonicus anphevirus 1 (AejapAV1) and Ae. japonicus bunyavirus 1 (AejapBV1). We also discovered sequences that were presumably derived from two additional novel viruses: Ae. japonicus bunyavirus 2 (AejapBV2) and Ae. japonicus rhabdovirus 1 (AejapRV1). All six viruses induced strong RNA interference responses, including the production of twenty-one nucleotide-sized small interfering RNAs, a signature of active replication in the host. Notably, AejapBV1 and AejapBV2 belong to different viral families; however, no RNA-dependent RNA polymerase sequence has been found for AejapBV2. Intriguingly, our small RNA-based approach identified an ∼1-kb long ambigrammatic RNA that is associated with AejapNV1 as a secondary segment but showed no similarity to any sequence in public databases. We confirmed the presence of AejapNV1 primary and secondary segments, AejapTV1, AejapAV1, and AejapBV1 by reverse transcriptase polymerase chain reaction (PCR) in wild-caught Ae. japonicus mosquitoes. AejapNV1 and AejapTV1 were found at high prevalence (87-100 per cent) in adult females, adult males, and larvae. Using a small RNA-based, sequence-independent metagenomic strategy, we uncovered a conserved and prevalent virome among Ae. japonicus mosquito populations. The high prevalence of AejapNV1 and AejapTV1 across all tested mosquito life stages suggests that these viruses are intimately associated with Ae. japonicus.
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Affiliation(s)
- Sandra R Abbo
- Laboratory of Virology, Wageningen University & Research, Droevendaalsesteeg 4, Wageningen 6708 PB, The Netherlands
| | - João P P de Almeida
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Belo Horizonte 31270-901, Brazil
| | - Roenick P Olmo
- Insect Models of Innate Immunity, Université de Strasbourg, CNRS UPR9022, INSERM U1257, 2 Allee Konrad Roentgen, Strasbourg 67000, France
| | - Carlijn Balvers
- Laboratory of Virology, Wageningen University & Research, Droevendaalsesteeg 4, Wageningen 6708 PB, The Netherlands
- Laboratory of Entomology, Wageningen University & Research, Droevendaalsesteeg 4, Wageningen 6708 PB, The Netherlands
| | - Jet S Griep
- Laboratory of Virology, Wageningen University & Research, Droevendaalsesteeg 4, Wageningen 6708 PB, The Netherlands
- Laboratory of Entomology, Wageningen University & Research, Droevendaalsesteeg 4, Wageningen 6708 PB, The Netherlands
| | - Charlotte Linthout
- Laboratory of Entomology, Wageningen University & Research, Droevendaalsesteeg 4, Wageningen 6708 PB, The Netherlands
| | - Constantianus J M Koenraadt
- Laboratory of Entomology, Wageningen University & Research, Droevendaalsesteeg 4, Wageningen 6708 PB, The Netherlands
| | - Bruno M Silva
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Belo Horizonte 31270-901, Brazil
| | - Jelke J Fros
- Laboratory of Virology, Wageningen University & Research, Droevendaalsesteeg 4, Wageningen 6708 PB, The Netherlands
| | - Eric R G R Aguiar
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Belo Horizonte 31270-901, Brazil
- Department of Biological Science, Center of Biotechnology and Genetics, State University of Santa Cruz, Rod. Jorge Amado Km 16, Ilhéus 45662-900, Brazil
| | - Eric Marois
- Insect Models of Innate Immunity, Université de Strasbourg, CNRS UPR9022, INSERM U1257, 2 Allee Konrad Roentgen, Strasbourg 67000, France
| | - Gorben P Pijlman
- Laboratory of Virology, Wageningen University & Research, Droevendaalsesteeg 4, Wageningen 6708 PB, The Netherlands
| | - João T Marques
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Belo Horizonte 31270-901, Brazil
- Insect Models of Innate Immunity, Université de Strasbourg, CNRS UPR9022, INSERM U1257, 2 Allee Konrad Roentgen, Strasbourg 67000, France
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22
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Abel SM, Hong Z, Williams D, Ireri S, Brown MQ, Su T, Hung KY, Henke JA, Barton JP, Le Roch KG. Small RNA sequencing of field Culex mosquitoes identifies patterns of viral infection and the mosquito immune response. Sci Rep 2023; 13:10598. [PMID: 37391513 PMCID: PMC10313667 DOI: 10.1038/s41598-023-37571-6] [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: 02/08/2023] [Accepted: 06/23/2023] [Indexed: 07/02/2023] Open
Abstract
Mosquito-borne disease remains a significant burden on global health. In the United States, the major threat posed by mosquitoes is transmission of arboviruses, including West Nile virus by mosquitoes of the Culex genus. Virus metagenomic analysis of mosquito small RNA using deep sequencing and advanced bioinformatic tools enables the rapid detection of viruses and other infecting organisms, both pathogenic and non-pathogenic to humans, without any precedent knowledge. In this study, we sequenced small RNA samples from over 60 pools of Culex mosquitoes from two major areas of Southern California from 2017 to 2019 to elucidate the virome and immune responses of Culex. Our results demonstrated that small RNAs not only allowed the detection of viruses but also revealed distinct patterns of viral infection based on location, Culex species, and time. We also identified miRNAs that are most likely involved in Culex immune responses to viruses and Wolbachia bacteria, and show the utility of using small RNA to detect antiviral immune pathways including piRNAs against some pathogens. Collectively, these findings show that deep sequencing of small RNA can be used for virus discovery and surveillance. One could also conceive that such work could be accomplished in various locations across the world and over time to better understand patterns of mosquito infection and immune response to many vector-borne diseases in field samples.
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Affiliation(s)
- Steven M Abel
- Department of Molecular, Cell and Systems Biology, Center for Infection Disease and Vector Research, University of California, Riverside, CA, 92521, USA
| | - Zhenchen Hong
- Department of Physics and Astronomy, University of California, Riverside, CA, 92521, USA
| | - Desiree Williams
- Department of Molecular, Cell and Systems Biology, Center for Infection Disease and Vector Research, University of California, Riverside, CA, 92521, USA
| | - Sally Ireri
- Department of Molecular, Cell and Systems Biology, Center for Infection Disease and Vector Research, University of California, Riverside, CA, 92521, USA
| | - Michelle Q Brown
- West Valley Mosquito & Vector Control District, Ontario, CA, 91761, USA
| | - Tianyun Su
- West Valley Mosquito & Vector Control District, Ontario, CA, 91761, USA
| | - Kim Y Hung
- Coachella Valley Mosquito & Vector Control District, Indio, CA, 92201, USA
| | - Jennifer A Henke
- Coachella Valley Mosquito & Vector Control District, Indio, CA, 92201, USA
| | - John P Barton
- Department of Physics and Astronomy, University of California, Riverside, CA, 92521, USA
| | - Karine G Le Roch
- Department of Molecular, Cell and Systems Biology, Center for Infection Disease and Vector Research, University of California, Riverside, CA, 92521, USA.
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23
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Ahebwa A, Hii J, Neoh KB, Chareonviriyaphap T. Aedes aegypti and Aedes albopictus (Diptera: Culicidae) ecology, biology, behaviour, and implications on arbovirus transmission in Thailand: Review. One Health 2023; 16:100555. [PMID: 37363263 PMCID: PMC10288100 DOI: 10.1016/j.onehlt.2023.100555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 04/28/2023] [Accepted: 04/28/2023] [Indexed: 06/28/2023] Open
Abstract
Aedes aegypti and Aedes albopictus (Aedes) transmit highly pathogenic viruses such as dengue, chikungunya, yellow fever, and Zika which can cause life-threatening diseases in humans. They are the most important vectors of arboviruses in Thailand. Their vectorial capacity (VC) is highly complex mainly due to the interplay between biotic and abiotic factors that vary in time and space. A literature survey was conducted to collate and discuss recent research regarding the influence of Aedes vector biology, behaviour, and ecology on arbovirus transmission in Thailand. The survey followed guidelines of preferred reporting items of systematic reviews and meta-analyses (PRISMA). All fields, keyword search was conducted in the Web of Science database for the period of 2000-2021. The search yielded 821 records on Ae. aegypti and 293 records on Aedes albopictus, of which 77 were selected for discussion. Genomic studies showed that there is a high genetic variation in Aedes albopictus whereas Ae. aegypti generally shows low genetic variation. Along with genetically unstable arboviruses, the interaction between Aedes and arboviruses is largely regulated by genomic events such as genetic mutations and immune response protein factors. Temperature and precipitation are the major climatic events driving arbovirus transmission. Human exposure risk factors are mainly due to multiple feeding patterns, including endophagy by Aedes albopictus and zoophagic behaviour of Ae. aegypti as well as diverse human-associated breeding sites. Integration of the One Health approach in control interventions is a priority with a rigorous focus on Aedes-arbovirus surveillance as a complementary strategy.
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Affiliation(s)
- Alex Ahebwa
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand
| | - Jeffrey Hii
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand
- College of Public Health, Medical and Veterinary Sciences, James Cook University, North Queensland, QLD 4810, Australia
| | - Kok-Boon Neoh
- Department of Entomology, National Chung Hsing University, Taichung, Taiwan
| | - Theeraphap Chareonviriyaphap
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand
- Royal Society of Thailand, Bangkok 10900, Thailand
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24
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Kong L, Xiao J, Yang L, Sui Y, Wang D, Chen S, Liu P, Chen XG, Gu J. Mosquito densovirus significantly reduces the vector susceptibility to dengue virus serotype 2 in Aedes albopictus mosquitoes (Diptera: Culicidae). Infect Dis Poverty 2023; 12:48. [PMID: 37161462 PMCID: PMC10169196 DOI: 10.1186/s40249-023-01099-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 04/28/2023] [Indexed: 05/11/2023] Open
Abstract
BACKGROUND Dengue virus (DENV) is a major public health threat, with Aedes albopictus being the confirmed vector responsible for dengue epidemics in Guangzhou, China. Mosquito densoviruses (MDVs) are pathogenic mosquito-specific viruses, and a novel MDV was previously isolated from Ae. albopictus in Guangzhou. This study aims to determine the prevalence of MDVs in wild Ae. albopictus populations and investigate their potential interactions with DENV and impact on vector susceptibility for DENV. METHODS The prevalence of MDV in wild mosquitoes in China was investigated using open access sequencing data and PCR detection in Ae. albopictus in Guangzhou. The viral infection rate and titers in MDV-persistent C6/36 cells were evaluated at 12, 24, 48, 72, 96, and 120 h post infection (hpi) by indirect immunofluorescence assay (IFA) and real time quantitative PCR (RT-qPCR). The midgut infection rate (MIR), dissemination rate (DR), and salivary gland infection rate (SGIR) in various tissues of MDV-infected mosquitoes were detected and quantified at 0, 5, 10, and 15 days post infection (dpi) by RT-PCR and RT-qPCR. The chi-square test evaluated dengue virus serotype 2 (DENV-2) and Aedes aegypti densovirus (AaeDV) infection rates and related indices in mosquitoes, while Tukey's LSD and t-tests compared viral titers in C6/36 cells and tissues over time. RESULTS The results revealed a relatively wide distribution of MDVs in Aedes, Culex, and Anopheles mosquitoes in China and an over 68% positive rate. In vitro, significant reductions in DENV-2 titers in supernatant at 120 hpi, and an apparent decrease in DENV-2-positive cells at 96 and 120 hpi were observed. In vivo, DENV-2 in the ovaries and salivary glands was first detected at 10 dpi in both monoinfected and superinfected Ae. albopictus females, while MDV superinfection with DENV-2 suppressed the salivary gland infection rate at 15 dpi. DENV-2 titer in the ovary and salivary glands of Ae. albopictus was reduced in superinfected mosquitoes at 15 dpi. CONCLUSIONS MDVs is widespread in natural mosquito populations, and replication of DENV-2 is suppressed in MDV-infected Ae. albopictus, thus reducing vector susceptibility to DENV-2. Our study supports the hypothesis that MDVs may contribute to reducing transmission of DENV and provides an alternative strategy for mosquito-transmitted disease control.
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Affiliation(s)
- Ling Kong
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Pathogen Biology, School of Public Health, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Jie Xiao
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Pathogen Biology, School of Public Health, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Lu Yang
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Pathogen Biology, School of Public Health, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Yuan Sui
- Brown School, Washington University, St. Louis, MO, 63130, USA
| | - Duoquan Wang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, 200025, China
| | - Shaoqiang Chen
- Shenzhen Aiming Pest Control Operation Service Company Limited, Shenzhen, Guangdong, China
| | - Peiwen Liu
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Pathogen Biology, School of Public Health, Southern Medical University, Guangzhou, 510515, Guangdong, China.
| | - Xiao-Guang Chen
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Pathogen Biology, School of Public Health, Southern Medical University, Guangzhou, 510515, Guangdong, China.
| | - Jinbao Gu
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Pathogen Biology, School of Public Health, Southern Medical University, Guangzhou, 510515, Guangdong, China.
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25
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Arboviruses and symbiotic viruses cooperatively hijack insect sperm-specific proteins for paternal transmission. Nat Commun 2023; 14:1289. [PMID: 36894574 PMCID: PMC9998617 DOI: 10.1038/s41467-023-36993-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 02/23/2023] [Indexed: 03/11/2023] Open
Abstract
Arboviruses and symbiotic viruses can be paternally transmitted by male insects to their offspring for long-term viral persistence in nature, but the mechanism remains largely unknown. Here, we identify the sperm-specific serpin protein HongrES1 of leafhopper Recilia dorsalis as a mediator of paternal transmission of the reovirus Rice gall dwarf virus (RGDV) and a previously undescribed symbiotic virus of the Virgaviridae family, Recilia dorsalis filamentous virus (RdFV). We show that HongrES1 mediates the direct binding of virions to leafhopper sperm surfaces and subsequent paternal transmission via interaction with both viral capsid proteins. Direct interaction of viral capsid proteins mediates simultaneously invasion of two viruses into male reproductive organs. Moreover, arbovirus activates HongrES1 expression to suppress the conversion of prophenoloxidase to active phenoloxidase, potentially producing a mild antiviral melanization defense. Paternal virus transmission scarcely affects offspring fitness. These findings provide insights into how different viruses cooperatively hijack insect sperm-specific proteins for paternal transmission without disturbing sperm functions.
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26
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Cottis S, Blisnick AA, Failloux AB, Vernick KD. Determinants of Chikungunya and O'nyong-Nyong Virus Specificity for Infection of Aedes and Anopheles Mosquito Vectors. Viruses 2023; 15:589. [PMID: 36992298 PMCID: PMC10051923 DOI: 10.3390/v15030589] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/02/2023] [Accepted: 02/14/2023] [Indexed: 02/23/2023] Open
Abstract
Mosquito-borne diseases caused by viruses and parasites are responsible for more than 700 million infections each year. Anopheles and Aedes are the two major vectors for, respectively, malaria and arboviruses. Anopheles mosquitoes are the primary vector of just one known arbovirus, the alphavirus o'nyong-nyong virus (ONNV), which is closely related to the chikungunya virus (CHIKV), vectored by Aedes mosquitoes. However, Anopheles harbor a complex natural virome of RNA viruses, and a number of pathogenic arboviruses have been isolated from Anopheles mosquitoes in nature. CHIKV and ONNV are in the same antigenic group, the Semliki Forest virus complex, are difficult to distinguish via immunodiagnostic assay, and symptomatically cause essentially the same human disease. The major difference between the arboviruses appears to be their differential use of mosquito vectors. The mechanisms governing this vector specificity are poorly understood. Here, we summarize intrinsic and extrinsic factors that could be associated with vector specificity by these viruses. We highlight the complexity and multifactorial aspect of vectorial specificity of the two alphaviruses, and evaluate the level of risk of vector shift by ONNV or CHIKV.
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Affiliation(s)
- Solène Cottis
- Genetics and Genomics of Insect Vectors Unit, Department of Parasites and Insect Vectors, Institut Pasteur, Université de Paris Cité, CNRS UMR2000, F-75015 Paris, France
- Graduate School of Life Sciences ED515, Sorbonne Université UPMC Paris VI, 75252 Paris, France
| | - Adrien A. Blisnick
- Arboviruses and Insect Vectors Unit, Department of Virology, Institut Pasteur, Université de Paris Cité, F-75015 Paris, France
| | - Anna-Bella Failloux
- Arboviruses and Insect Vectors Unit, Department of Virology, Institut Pasteur, Université de Paris Cité, F-75015 Paris, France
| | - Kenneth D. Vernick
- Genetics and Genomics of Insect Vectors Unit, Department of Parasites and Insect Vectors, Institut Pasteur, Université de Paris Cité, CNRS UMR2000, F-75015 Paris, France
- Graduate School of Life Sciences ED515, Sorbonne Université UPMC Paris VI, 75252 Paris, France
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27
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Factors Affecting Arbovirus Midgut Escape in Mosquitoes. Pathogens 2023; 12:pathogens12020220. [PMID: 36839492 PMCID: PMC9963182 DOI: 10.3390/pathogens12020220] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/25/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023] Open
Abstract
Arboviral diseases spread by mosquitoes cause significant morbidity and mortality throughout much of the world. The treatment and prevention of these diseases through medication and vaccination is often limited, which makes controlling arboviruses at the level of the vector ideal. One way to prevent the spread of an arbovirus would be to stop its vector from developing a disseminated infection, which is required for the virus to make its way to the saliva of the mosquito to be potentially transmitted to a new host. The midgut of the mosquito provides one such opportunity to stop an arbovirus in its tracks. It has been known for many years that in certain arbovirus-vector combinations, or under certain circumstances, an arbovirus can infect and replicate in the midgut but is unable to escape from the tissue to cause disseminated infection. This situation is known as a midgut escape barrier. If we better understand why this barrier occurs, it might aid in the development of more informed control strategies. In this review, we discuss how the midgut escape barrier contributes to virus-vector specificity and possible mechanisms that may allow this barrier to be overcome in successful virus-vector combinations. We also discuss several of the known factors that either increase or decrease the likelihood of midgut escape.
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28
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Uchida L, Sakurai Y, Shimooka M, Morales-Vargas RE, Hagiwara K, Muramatsu Y. Identification of Three Novel Genes in Phenuiviridae Detected from Aedes Mosquitoes in Hokkaido, Japan. Jpn J Infect Dis 2023; 76:55-63. [PMID: 36184398 DOI: 10.7883/yoken.jjid.2022.179] [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: 01/28/2023]
Abstract
Mosquitoes are important arthropod vectors of arboviruses. The family Phenuiviridae includes several medically important arboviruses, such as the Rift Valley fever phlebovirus and Toscana phlebovirus. Recent comprehensive genetic analyses have identified many novel mosquito-specific viruses that are phylogenetically related to Phenuiviridae. We collected mosquitoes from Hokkaido in northern Japan, and conducted reverse transcription polymerase chain reactions (RT-PCRs) targeting the RNA-dependent RNA polymerase (RdRp) gene of Phenuiviridae. A total of 285 pools, comprising 3,082 mosquitoes from 2 genera and 8 species, were collected. Partial RdRp sequences were detected in 97 pools, which allowed us to classify the viruses into 3 clusters provisionally designated as Etutanne virus (ETTV) 1, 2, and 3. The virus most closely related to ETTVs is Narangue virus (family Phenuiviridae, genus Mobuvirus), which was detected in Mansonia mosquitoes; the nucleotide and amino acid sequences of the Narangue virus are 58.4-66.2% and 64.7-86.7% similar, respectively, to those of ETTVs. PCR and RT-PCR using DNA and RNase digestion methods showed that the ETTVs are RNA viruses that do not form non-retroviral integrated RNA virus sequences in the mosquito genome.
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Affiliation(s)
- Leo Uchida
- School of Veterinary Medicine, Rakuno Gakuen University, Japan
| | - Yoshimi Sakurai
- School of Veterinary Medicine, Rakuno Gakuen University, Japan
| | - Makoto Shimooka
- School of Veterinary Medicine, Rakuno Gakuen University, Japan
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29
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Olmo RP, Todjro YMH, Aguiar ERGR, de Almeida JPP, Ferreira FV, Armache JN, de Faria IJS, Ferreira AGA, Amadou SCG, Silva ATS, de Souza KPR, Vilela APP, Babarit A, Tan CH, Diallo M, Gaye A, Paupy C, Obame-Nkoghe J, Visser TM, Koenraadt CJM, Wongsokarijo MA, Cruz ALC, Prieto MT, Parra MCP, Nogueira ML, Avelino-Silva V, Mota RN, Borges MAZ, Drumond BP, Kroon EG, Recker M, Sedda L, Marois E, Imler JL, Marques JT. Mosquito vector competence for dengue is modulated by insect-specific viruses. Nat Microbiol 2023; 8:135-149. [PMID: 36604511 DOI: 10.1038/s41564-022-01289-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 11/16/2022] [Indexed: 01/07/2023]
Abstract
Aedes aegypti and A. albopictus mosquitoes are the main vectors for dengue virus (DENV) and other arboviruses, including Zika virus (ZIKV). Understanding the factors that affect transmission of arboviruses from mosquitoes to humans is a priority because it could inform public health and targeted interventions. Reasoning that interactions among viruses in the vector insect might affect transmission, we analysed the viromes of 815 urban Aedes mosquitoes collected from 12 countries worldwide. Two mosquito-specific viruses, Phasi Charoen-like virus (PCLV) and Humaita Tubiacanga virus (HTV), were the most abundant in A. aegypti worldwide. Spatiotemporal analyses of virus circulation in an endemic urban area revealed a 200% increase in chances of having DENV in wild A. aegypti mosquitoes when both HTV and PCLV were present. Using a mouse model in the laboratory, we showed that the presence of HTV and PCLV increased the ability of mosquitoes to transmit DENV and ZIKV to a vertebrate host. By transcriptomic analysis, we found that in DENV-infected mosquitoes, HTV and PCLV block the downregulation of histone H4, which we identify as an important proviral host factor in vivo.
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Affiliation(s)
- Roenick P Olmo
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Université de Strasbourg, CNRS UPR9022, INSERM U1257, Strasbourg, France
| | - Yaovi M H Todjro
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Eric R G R Aguiar
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Department of Biological Sciences (DCB), Center of Biotechnology and Genetics (CBG), State University of Santa Cruz (UESC), Ilhéus, Brazil
| | - João Paulo P de Almeida
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Flávia V Ferreira
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Juliana N Armache
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Isaque J S de Faria
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Alvaro G A Ferreira
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou-Fiocruz, Belo Horizonte, Minas Gerais, Brazil
| | - Siad C G Amadou
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ana Teresa S Silva
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Kátia P R de Souza
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ana Paula P Vilela
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Antinea Babarit
- Université de Strasbourg, CNRS UPR9022, INSERM U1257, Strasbourg, France
| | - Cheong H Tan
- Environmental Health Institute, Vector Biology and Control Division, National Environment Agency, Singapore, Singapore
| | - Mawlouth Diallo
- Pôle de Zoologie Médicale, Institut Pasteur de Dakar, Dakar, Senegal
| | - Alioune Gaye
- Pôle de Zoologie Médicale, Institut Pasteur de Dakar, Dakar, Senegal
| | - Christophe Paupy
- Maladies Infectieuses et Vecteurs: Écologie, Génétique, Évolution et Contrôle (MIVEGEC); Université de Montpellier, Institut de Recherche pour le Développement, CNRS, Montpellier, France
| | - Judicaël Obame-Nkoghe
- Laboratoire de Biologie Moléculaire et Cellulaire, Département de Biologie, Université des Sciences et Techniques de Masuku, Franceville, Gabon.,Écologie des Systèmes Vectoriels, Centre Interdisciplinaire de Recherches Médicales de Franceville, Franceville, Gabon
| | - Tessa M Visser
- Laboratory of Entomology, Wageningen University and Research, Wageningen, the Netherlands
| | | | | | - Ana Luiza C Cruz
- Department of Microbiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Mariliza T Prieto
- Secretaria Municipal de Saúde, Seção de Controle de Vetores, Santos City Hall, Santos, Brazil
| | - Maisa C P Parra
- Laboratory of Research in Virology, Faculdade de Medicina de São José do Rio Preto (FAMERP), São José do Rio Preto, Brazil
| | - Maurício L Nogueira
- Laboratory of Research in Virology, Faculdade de Medicina de São José do Rio Preto (FAMERP), São José do Rio Preto, Brazil.,Departament of Pathology, University of Texas Medical Branch, Galveston, TX, USA
| | - Vivian Avelino-Silva
- Department of Infectious and Parasitic Diseases, Faculdade de Medicina da Universidade de São Paulo (FMUSP), Cerqueira Cesar, Brazil
| | - Renato N Mota
- Health Surveillance (Zoonosis Control), Brumadinho City Hall, Brumadinho, Brazil
| | - Magno A Z Borges
- Center for Biological and Health Sciences, Universidade Estadual de Montes Claros, Montes Claros, Brazil
| | - Betânia P Drumond
- Department of Microbiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Erna G Kroon
- Department of Microbiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Mario Recker
- Centre for Ecology and Conservation, University of Exeter, Penryn Campus, Penryn, UK.,Institute of Tropical Medicine, Universitätsklinikum Tübingen, Tübingen, Germany
| | - Luigi Sedda
- Lancaster Medical School, Lancaster University, Lancaster, UK
| | - Eric Marois
- Université de Strasbourg, CNRS UPR9022, INSERM U1257, Strasbourg, France
| | - Jean-Luc Imler
- Université de Strasbourg, CNRS UPR9022, INSERM U1257, Strasbourg, France
| | - João T Marques
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil. .,Université de Strasbourg, CNRS UPR9022, INSERM U1257, Strasbourg, France.
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30
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He YJ, Ye ZX, Zhang CX, Li JM, Chen JP, Lu G. An RNA Virome Analysis of the Pink-Winged Grasshopper Atractomorpha sinensis. INSECTS 2022; 14:9. [PMID: 36661938 PMCID: PMC9862791 DOI: 10.3390/insects14010009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 12/15/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
A large number of RNA viruses have been discovered in most insect orders using high-throughput sequencing (HTS) and advanced bioinformatics methods. In this study, an RNA virome of the grasshopper was systematically identified in Atractomorpha sinensis (Orthoptera: Pyrgomorphidae), an important agricultural pest known as the pink-winged grasshopper. These insect viruses were classified as the nege-like virus, iflavirus, ollusvirus, and chu-like virus using HTS and phylogenetic analyses. Meanwhile, the full sequences of four novel RNA viruses were obtained with RACE and named Atractomorpha sinensis nege-like virus 1 (ASNV1), Atractomorpha sinensis iflavirus 1 (ASIV1), Atractomorpha sinensis ollusvirus 1 (ASOV1), and Atractomorpha sinensis chu-like virus 1 (ASCV1), respectively. Moreover, the analysis of virus-derived small interfering RNAs showed that most of the RNA viruses were targeted by the host antiviral RNA interference pathway. Moreover, our results provide a comprehensive analysis on the RNA virome of A. sinensis.
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Affiliation(s)
| | | | | | | | | | - Gang Lu
- Correspondence: (J.-P.C.); (G.L.)
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31
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Ateutchia Ngouanet S, Wanji S, Yadouleton A, Demanou M, Djouaka R, Nanfack-Minkeu F. Factors enhancing the transmission of mosquito-borne arboviruses in Africa. Virusdisease 2022; 33:477-488. [PMID: 36278029 PMCID: PMC9579656 DOI: 10.1007/s13337-022-00795-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 09/19/2022] [Indexed: 11/28/2022] Open
Affiliation(s)
- Sandra Ateutchia Ngouanet
- International Institute of Tropical Agriculture (IITA), 08 Tri-Postal, P.O. Box 0932, Cotonou, Benin
- Department Microbiology and Parasitology, Faculty of Science, University of Buea, P.O. BOX 63, Buea, Cameroon
| | - Samuel Wanji
- Department Microbiology and Parasitology, Faculty of Science, University of Buea, P.O. BOX 63, Buea, Cameroon
| | - Anges Yadouleton
- Centre de Recherche Entomologique de Cotonou (CREC), Cotonou, Benin
| | - Maurice Demanou
- Regional Yellow Fever Laboratory Coordinator World Health Organization, Inter-Country Support Team West Africa, 03 P.O. Box 7019, Ouagadougou 03, Burkina Faso
| | - Rousseau Djouaka
- International Institute of Tropical Agriculture (IITA), 08 Tri-Postal, P.O. Box 0932, Cotonou, Benin
| | - Ferdinand Nanfack-Minkeu
- International Institute of Tropical Agriculture (IITA), 08 Tri-Postal, P.O. Box 0932, Cotonou, Benin
- Department of Biology, The College of Wooster, Wooster, OH USA
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32
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Coletti TDM, Romano CM, Urbinatti PR, Teixeira RS, Pedrosa LWDA, Nardi MS, Natal D, Costa ACD, Jesus JGD, Claro IM, Sabino EC, Witkin SS, Marrelli MT, Fernandes LN. Characterization of insect-specific Culex flavivirus (Flaviviridae) nucleotide sequences in mosquitoes from urban parks in São Paulo, Brazil. Rev Soc Bras Med Trop 2022; 55:e0067. [PMID: 36169488 DOI: 10.1590/0037-8682-0067-2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 07/08/2022] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Despite their worldwide occurrence, the distribution and role of insect-specific flaviviruses (ISFs) remain unclear. METHODS We evaluated the presence of ISFs in mosquitoes collected in São Paulo, Brazil, using reverse transcription and semi-nested polymerase chain reaction (PCR). Some of the positive samples were subjected to nanopore sequencing. RESULTS Twelve mosquito pools (2.8%) tested positive for flavivirus infection. Nanopore sequencing was successfully performed on six samples. Phylogenetic analysis grouped these sequences into genotype 2 of Culex flavivirus (CxFV). CONCLUSIONS The identification of CxFV genotype 2 at new locations in São Paulo highlights the importance of understanding the role of ISFs in mosquito vector competence.
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Affiliation(s)
- Thaís de Moura Coletti
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical, Laboratório de Investigação Médica-49, São Paulo, SP, Brasil.,Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical, Laboratório de Investigação Médica-46, São Paulo, SP, Brasil
| | - Camila Malta Romano
- Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, São Paulo, SP, Brasil
| | - Paulo Roberto Urbinatti
- Universidade de São Paulo, Faculdade de Saúde Pública, Departamento de Epidemiologia, São Paulo, SP, Brasil
| | - Renildo Souza Teixeira
- Prefeitura de São Paulo, Centro de Controle de Zoonoses, Laboratório de Fauna Sinantrópica, São Paulo, SP, Brasil
| | - Leila Weiss de Almeida Pedrosa
- Secretaria do Verde e Meio Ambiente, Divisão da Fauna Silvestre, Coordenadoria de Gestão de Parques e Biodiversidade, São Paulo, SP, Brasil
| | - Marcello Schiavo Nardi
- Secretaria do Verde e Meio Ambiente, Divisão da Fauna Silvestre, Coordenadoria de Gestão de Parques e Biodiversidade, São Paulo, SP, Brasil
| | - Delsio Natal
- Universidade de São Paulo, Faculdade de Saúde Pública, Departamento de Epidemiologia, São Paulo, SP, Brasil
| | - Antônio Charlys da Costa
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical, São Paulo, SP, Brasil
| | - Jaqueline Goes de Jesus
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical, Laboratório de Investigação Médica-46, São Paulo, SP, Brasil
| | - Ingra Morales Claro
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical, Laboratório de Investigação Médica-46, São Paulo, SP, Brasil
| | - Ester Cerdeira Sabino
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical, Laboratório de Investigação Médica-46, São Paulo, SP, Brasil
| | - Steven S Witkin
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical, São Paulo, SP, Brasil.,Weill Cornell Medicine, Department of Obstetrics and Gynecology, New York, NY, USA
| | - Mauro Toledo Marrelli
- Universidade de São Paulo, Faculdade de Saúde Pública, Departamento de Epidemiologia, São Paulo, SP, Brasil
| | - Licia Natal Fernandes
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical, Laboratório de Investigação Médica-49, São Paulo, SP, Brasil
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33
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Vertical and Horizontal Transmission of Cell Fusing Agent Virus in Aedes aegypti. Appl Environ Microbiol 2022; 88:e0106222. [PMID: 36036577 PMCID: PMC9499017 DOI: 10.1128/aem.01062-22] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Cell fusing agent virus (CFAV) is an insect-specific flavivirus (ISF) found in Aedes aegypti mosquitoes. ISFs have demonstrated the ability to modulate the infection or transmission of arboviruses such as dengue, West Nile, and Zika viruses. It is thought that vertical transmission is the main route for ISF maintenance in nature. This has been observed with CFAV, but there is evidence of horizontal and venereal transmission in other ISFs. Understanding the route of transmission can inform strategies to spread ISFs to vector populations as a method of controlling pathogenic arboviruses. We crossed individually reared male and female mosquitoes from both a naturally occurring CFAV-positive Ae. aegypti colony and its negative counterpart to provide information on maternal, paternal, and horizontal transmission. RT-PCR was used to detect CFAV in individual female pupal exuviae and was 89% sensitive, but only 42% in male pupal exuviae. This is a possible way to screen individuals for infection without destroying the adults. Female-to-male horizontal transmission was not observed during this study. However, there was a 31% transmission rate from mating pairs of CFAV-positive males to negative female mosquitoes. Maternal vertical transmission was observed with a filial infection rate of 93%. The rate of paternal transmission was 85% when the female remained negative, 61% when the female acquired CFAV horizontally, and 76% overall. Maternal and paternal transmission of CFAV could allow the introduction of this virus into wild Ae. aegypti populations through male or female mosquito releases, and thus provides a potential strategy for ISF-derived arbovirus control. IMPORTANCE Insect-specific flaviviruses (ISFs), are a group of nonpathogenic flaviviruses that only infect insects. ISFs can have a high prevalence in mosquito populations, but their transmission routes are not well understood. The results of this study confirm maternal transmission of cell fusing agent virus (CFAV) and demonstrate that paternal transmission is also highly efficient. Horizontal transmission of CFAV was also observed, aided by evaluation of the pupal infection status before mating with an infected individual. This technique of detecting infection in discarded pupae exuviae has not been evaluated previously and will be a useful tool for others in the field of studying viral transmission in mosquitoes. Identifying these routes of transmission provides information about how CFAV could be maintained in wild populations of mosquitoes and can aid future studies focusing on interactions of CFAV with their hosts and other viruses that infect mosquitoes.
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Fallon AM. From Mosquito Ovaries to Ecdysone; from Ecdysone to Wolbachia: One Woman's Career in Insect Biology. INSECTS 2022; 13:756. [PMID: 36005381 PMCID: PMC9409236 DOI: 10.3390/insects13080756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
In anautogenous mosquitoes, synchronous development of terminal ovarian follicles after a blood meal provides an important model for studies on insect reproduction. Removal and implantation of ovaries, in vitro culture of dissected tissues and immunological assays for vitellogenin synthesis by the fat body showed that the Aedes aegypti (L.) (Diptera, Culicidae) mosquito ovary produces a factor essential for egg production. The discovery that the ovarian factor was the insect steroid hormone, ecdysone, provided a model for co-option of the larval hormones as reproductive hormones in adult insects. In later work on cultured mosquito cells, ecdysone was shown to arrest the cell cycle, resulting in an accumulation of diploid cells in G1, prior to initiation of DNA synthesis. Some mosquito species, such as Culex pipiens L. (Diptera, Culicidae), harbor the obligate intracellular bacterium, Wolbachia pipientis Hertig (Rickettsiales, Anaplasmataceae), in their reproductive tissues. When maintained in mosquito cell lines, Wolbachia abundance increases in ecdysone-arrested cells. This observation facilitated the recovery of high levels of Wolbachia from cultured cells for microinjection and genetic manipulation. In female Culex pipiens, it will be of interest to explore how hormonal cues that support initiation and progression of the vitellogenic cycle influence Wolbachia replication and transmission to subsequent generations via infected eggs.
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Affiliation(s)
- Ann M Fallon
- Department of Entomology, University of Minnesota, 1980 Folwell Ave., St Paul, MN 55108, USA
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35
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Reporter Flaviviruses as Tools to Demonstrate Homologous and Heterologous Superinfection Exclusion. Viruses 2022; 14:v14071501. [PMID: 35891480 PMCID: PMC9317482 DOI: 10.3390/v14071501] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 12/29/2022] Open
Abstract
Binjari virus (BinJV) is a lineage II or dual-host affiliated insect-specific flavivirus previously demonstrated as replication-deficient in vertebrate cells. Previous studies have shown that BinJV is tolerant to exchanging its structural proteins (prM-E) with pathogenic flaviviruses, making it a safe backbone for flavivirus vaccines. Here, we report generation by circular polymerase extension reaction of BinJV expressing zsGreen or mCherry fluorescent protein. Recovered BinJV reporter viruses grew to high titres (107−8 FFU/mL) in Aedes albopictus C6/36 cells assayed using immunoplaque assays (iPA). We also demonstrate that BinJV reporters could be semi-quantified live in vitro using a fluorescence microplate reader with an observed linear correlation between quantified fluorescence of BinJV reporter virus-infected C6/36 cells and iPA-quantitated virus titres. The utility of the BinJV reporter viruses was then examined in homologous and heterologous superinfection exclusion assays. We demonstrate that primary infection of C6/36 cells with BinJVzsGreen completely inhibits a secondary infection with homologous BinJVmCherry or heterologous ZIKVmCherry using fluorescence microscopy and virus quantitation by iPA. Finally, BinJVzsGreen infections were examined in vivo by microinjection of Aedes aegypti with BinJVzsGreen. At seven days post-infection, a strong fluorescence in the vicinity of salivary glands was detected in frozen sections. This is the first report on the construction of reporter viruses for lineage II insect-specific flaviviruses and establishes a tractable system for exploring flavivirus superinfection exclusion in vitro and in vivo.
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Huang Y, Zhang H, Li X, Zhao L, Cai D, Wang S, Ren N, Ma H, Huang D, Wang F, Yuan Z, Zhang B, Xia H. In Vitro and In Vivo Characterization of a New Strain of Mosquito Flavivirus Derived from Culicoides. Viruses 2022; 14:v14061298. [PMID: 35746769 PMCID: PMC9229015 DOI: 10.3390/v14061298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/02/2022] [Accepted: 06/10/2022] [Indexed: 02/04/2023] Open
Abstract
Mosquito-specific flaviviruses comprise a group of insect-specific viruses with a single positive RNA, which can affect the duplication of mosquito-borne viruses and the life growth of mosquitoes, and which have the potential to be developed as a vaccine platform for mosquito-borne viruses. In this study, a strain of mosquito flavivirus (MFV) YN15-283-02 was detected in Culicoides collected from Yunnan, China. The isolation of the purified MFV YN15-283-02 from cell culture failed, and the virus was then rescued by an infectious clone. To study the biological features of MFV YN15-283-02 in vitro and in vivo, electron microscopy, phylogenetic tree, and viral growth kinetic analyses were performed in both cell lines and mosquitoes. The rescued MFV (rMFV) YN15-283-02 duplicated and reached a peak in C6/36 cells at 6 d.p.i. with approximately 2 × 106 RNA copies/μL (RNA to cell ratio of 0.1), but without displaying a cytopathic effect. In addition, the infection rate for the rMFV in Ae.aegypti show a low level in both larvae (≤15%) and adult mosquitoes (≤12%).
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Affiliation(s)
- Yi Huang
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China; (Y.H.); (H.Z.); (X.L.); (S.W.); (N.R.); (H.M.); (D.H.); (F.W.); (Z.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongqing Zhang
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China; (Y.H.); (H.Z.); (X.L.); (S.W.); (N.R.); (H.M.); (D.H.); (F.W.); (Z.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaodan Li
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China; (Y.H.); (H.Z.); (X.L.); (S.W.); (N.R.); (H.M.); (D.H.); (F.W.); (Z.Y.)
| | - Lu Zhao
- Westlake Disease Modeling Lab, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou 310024, China;
- School of Life Sciences, Westlake University, Hangzhou 310024, China
| | - Dirui Cai
- School of Life Sciences, Hubei University, Wuhan 430062, China;
| | - Shunlong Wang
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China; (Y.H.); (H.Z.); (X.L.); (S.W.); (N.R.); (H.M.); (D.H.); (F.W.); (Z.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Nanjie Ren
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China; (Y.H.); (H.Z.); (X.L.); (S.W.); (N.R.); (H.M.); (D.H.); (F.W.); (Z.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haixia Ma
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China; (Y.H.); (H.Z.); (X.L.); (S.W.); (N.R.); (H.M.); (D.H.); (F.W.); (Z.Y.)
| | - Doudou Huang
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China; (Y.H.); (H.Z.); (X.L.); (S.W.); (N.R.); (H.M.); (D.H.); (F.W.); (Z.Y.)
| | - Fei Wang
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China; (Y.H.); (H.Z.); (X.L.); (S.W.); (N.R.); (H.M.); (D.H.); (F.W.); (Z.Y.)
| | - Zhiming Yuan
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China; (Y.H.); (H.Z.); (X.L.); (S.W.); (N.R.); (H.M.); (D.H.); (F.W.); (Z.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bo Zhang
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China; (Y.H.); (H.Z.); (X.L.); (S.W.); (N.R.); (H.M.); (D.H.); (F.W.); (Z.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: (B.Z.); (H.X.); Tel.: +86-27-87197607 (B.Z.); +86-27-87198120 (H.X.)
| | - Han Xia
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China; (Y.H.); (H.Z.); (X.L.); (S.W.); (N.R.); (H.M.); (D.H.); (F.W.); (Z.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: (B.Z.); (H.X.); Tel.: +86-27-87197607 (B.Z.); +86-27-87198120 (H.X.)
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Oguzie JU, Nwangwu UC, Oluniyi PE, Olumade TJ, George UE, Kazeem A, Bankole BE, Brimmo FO, Asadu CC, Chukwuekezie OC, Ochu JC, Makwe CO, Dogunro FA, Onwude CO, Nwachukwu WE, Ezihe EK, Okonkwo GK, Umazi NE, Maikere J, Agashi NO, Eloy EI, Anokwu SO, Okoronkwo AI, Nwosu EM, Etiki SO, Ngwu IM, Ihekweazu C, Folarin OA, Komolafe IOO, Happi CT. Metagenomic sequencing characterizes a wide diversity of viruses in field mosquito samples in Nigeria. Sci Rep 2022; 12:7616. [PMID: 35538241 PMCID: PMC9090917 DOI: 10.1038/s41598-022-11797-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 04/07/2022] [Indexed: 01/24/2023] Open
Abstract
Mosquito vectors are a tremendous public health threat. One in six diseases worldwide is vector-borne transmitted mainly by mosquitoes. In the last couple of years, there have been active Yellow fever virus (YFV) outbreaks in many settings in Nigeria, and nationwide, entomological surveillance has been a significant effort geared towards understanding these outbreaks. In this study, we used a metagenomic sequencing approach to characterize viruses present in vector samples collected during various outbreaks of Yellow fever (YF) in Nigeria between 2017 and 2020. Mosquito samples were grouped into pools of 1 to 50 mosquitoes, each based on species, sex and location. Twenty-five pools of Aedes spp and one pool of Anopheles spp collected from nine states were sequenced and metagenomic analysis was carried out. We identified a wide diversity of viruses belonging to various families in this sample set. Seven different viruses detected included: Fako virus, Phasi Charoen-like virus, Verdadero virus, Chaq like-virus, Aedes aegypti totivirus, cell fusing agent virus and Tesano Aedes virus. Although there are no reports of these viruses being pathogenic, they are an understudied group in the same families and closely related to known pathogenic arboviruses. Our study highlights the power of next generation sequencing in identifying Insect specific viruses (ISVs), and provide insight into mosquito vectors virome in Nigeria.
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Affiliation(s)
- Judith U Oguzie
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun, Nigeria
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun, Nigeria
| | - Udoka C Nwangwu
- National Arbovirus and Vectors Research Centre (NAVRC), Enugu, Enugu, Nigeria
| | - Paul E Oluniyi
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun, Nigeria
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun, Nigeria
| | - Testimony J Olumade
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun, Nigeria
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun, Nigeria
| | - Uwem E George
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun, Nigeria
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun, Nigeria
| | - Akano Kazeem
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun, Nigeria
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun, Nigeria
| | - Bolajoko E Bankole
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun, Nigeria
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun, Nigeria
| | - Farida O Brimmo
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun, Nigeria
| | - Chukwuemeka C Asadu
- National Arbovirus and Vectors Research Centre (NAVRC), Enugu, Enugu, Nigeria
| | | | - Josephine C Ochu
- National Arbovirus and Vectors Research Centre (NAVRC), Enugu, Enugu, Nigeria
| | | | - Festus A Dogunro
- National Arbovirus and Vectors Research Centre (NAVRC), Enugu, Enugu, Nigeria
| | - Cosmas O Onwude
- National Arbovirus and Vectors Research Centre (NAVRC), Enugu, Enugu, Nigeria
| | | | - Ebuka K Ezihe
- National Arbovirus and Vectors Research Centre (NAVRC), Enugu, Enugu, Nigeria
| | | | | | - Jacob Maikere
- Médecins Sans Frontières (MSF Belgium), Bruxelles, Belgium
| | - Nneka O Agashi
- National Arbovirus and Vectors Research Centre (NAVRC), Enugu, Enugu, Nigeria
| | - Emelda I Eloy
- National Arbovirus and Vectors Research Centre (NAVRC), Enugu, Enugu, Nigeria
| | - Stephen O Anokwu
- National Arbovirus and Vectors Research Centre (NAVRC), Enugu, Enugu, Nigeria
| | - Angela I Okoronkwo
- National Arbovirus and Vectors Research Centre (NAVRC), Enugu, Enugu, Nigeria
| | - Ebuka M Nwosu
- National Arbovirus and Vectors Research Centre (NAVRC), Enugu, Enugu, Nigeria
| | - Sandra O Etiki
- National Arbovirus and Vectors Research Centre (NAVRC), Enugu, Enugu, Nigeria
| | - Ifeoma M Ngwu
- National Arbovirus and Vectors Research Centre (NAVRC), Enugu, Enugu, Nigeria
| | | | - Onikepe A Folarin
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun, Nigeria
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun, Nigeria
| | - Isaac O O Komolafe
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun, Nigeria
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun, Nigeria
| | - Christian T Happi
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Osun, Nigeria.
- Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun, Nigeria.
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Peinado SA, Aliota MT, Blitvich BJ, Bartholomay LC. Biology and Transmission Dynamics of Aedes flavivirus. JOURNAL OF MEDICAL ENTOMOLOGY 2022; 59:659-666. [PMID: 35064663 PMCID: PMC8924967 DOI: 10.1093/jme/tjab197] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Indexed: 05/08/2023]
Abstract
Aedes albopictus (Skuse) and Aedes aegypti (Linnaeus) (Diptera: Culicidae) mosquitoes transmit pathogenic arthropod-borne viruses, including dengue, chikungunya, and Zika viruses, with significant global health consequences. Both Ae. albopictus and Ae. aegypti also are susceptible to Aedes flavivirus (AEFV), an insect-specific flavivirus (ISF) first isolated in Japan from Ae. albopictus and Ae. flavopictus. ISFs infect only insect hosts and evidence suggests that they are maintained by vertical transmission. In some cases, ISFs interfere with pathogenic flavivirus infection, and may have potential use in disease control. We explored the host range of AEFV in 4 genera of mosquitoes after intrathoracic injection and observed greater than 95% prevalence in the species of Aedes and Toxorhynchites tested. Anopheles and Culex species were less permissive to infection. Vertical transmission studies revealed 100% transovarial transmission and a filial infection rate of 100% for AEFV in a persistently-infected colony of Ae. albopictus. Horizontal transmission potential was assessed for adult and larval mosquitoes following per os exposures and in venereal transmission experiments. No mosquitoes tested positive for AEFV infection after blood feeding, and infection with AEFV after sucrose feeding was rare. Similarly, 2% of adult mosquitoes tested positive for AEFV after feeding on infected cells in culture as larvae. Venereal transmission of AEFV was most frequently observed from infected males to uninfected females as compared with transmission from infected females to uninfected males. These results reveal new information on the infection potential of AEFV in mosquitoes and expand our understanding of both vertical and horizontal transmission of ISFs.
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Affiliation(s)
- Stephen A Peinado
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, USA
| | - Matthew T Aliota
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Twin Cities, MN, USA
| | - Bradley J Blitvich
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Lyric C Bartholomay
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, USA
- Corresponding author, e-mail:
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39
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Coatsworth H, Bozic J, Carrillo J, Buckner EA, Rivers AR, Dinglasan RR, Mathias DK. Intrinsic variation in the vertically transmitted core virome of the mosquito Aedes aegypti. Mol Ecol 2022; 31:2545-2561. [PMID: 35229389 DOI: 10.1111/mec.16412] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 01/27/2022] [Accepted: 02/17/2022] [Indexed: 11/29/2022]
Abstract
Virome studies among metazoans have revealed the ubiquity of RNA viruses in animals, contributing to a fundamental re-thinking of the relationships between organisms and their microbiota. Mosquito viromes, often scrutinized due to their public health relevance, may also provide insight into broadly applicable concepts, such as a "core virome," a set of viruses consistently associated with a host species or population that may fundamentally impact its basic biology. A subset of mosquito-associated viruses (MAVs) could comprise such a core, and MAVs can be categorized as (i) arboviruses, which alternate between mosquito and vertebrate hosts, (ii) insect-specific viruses, which cannot replicate in vertebrate cells, and (iii) viruses with unknown specificity. MAVs have been widely characterized in the disease vector Aedes aegypti, and the occurrence of a core virome in this species has been proposed but remains unclear. Using a wild population previously surveyed for MAVs and a common laboratory strain, we investigated viromes in reproductive tissue via metagenomic RNA sequencing. Virome composition varied across samples, but four groups comprised >97% of virus sequences: a novel partiti-like virus (Partitiviridae), a toti-like virus (Totiviridae), unclassified Riboviria, and four orthomyxo-like viruses (Orthormyxoviridae). Whole or partial genomes for the partiti-like virus, toti-like virus, and one orthomyxo-like virus were assembled and analyzed phylogenetically. Multigenerational maintenance of these MAVs was confirmed by RT-PCR, indicating vertical transmission as a mechanism for persistence. This study provides fundamental information regarding MAV ecology and variability in A. aegypti and the potential for vertically maintained core viromes at the population level.
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Affiliation(s)
- H Coatsworth
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida, USA.,Department of Infectious Diseases & Immunology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA.,CDC Southeastern Center of Excellence in Vector Borne Diseases, Gainesville, Florida, USA
| | - J Bozic
- CDC Southeastern Center of Excellence in Vector Borne Diseases, Gainesville, Florida, USA.,Entomology & Nematology Department, Florida Medical Entomology Laboratory, Institute of Food and Agricultural Sciences, University of Florida, Vero Beach, Florida, USA.,Department of Entomology, the Center for Infectious Disease Dynamics, and the Huck Institutes of the Life Sciences, the Pennsylvania State University, University Park, PA, USA
| | - J Carrillo
- CDC Southeastern Center of Excellence in Vector Borne Diseases, Gainesville, Florida, USA.,Manatee County Mosquito Control District, Palmetto, Florida, USA.,Lacerta Therapeutics, Production and Development, Alachua Florida, USA
| | - E A Buckner
- CDC Southeastern Center of Excellence in Vector Borne Diseases, Gainesville, Florida, USA.,Entomology & Nematology Department, Florida Medical Entomology Laboratory, Institute of Food and Agricultural Sciences, University of Florida, Vero Beach, Florida, USA
| | - A R Rivers
- CDC Southeastern Center of Excellence in Vector Borne Diseases, Gainesville, Florida, USA.,Genomics and Bioinformatics Research Unit, Agricultural Research Service, United States Department of Agriculture, Gainesville, Florida, USA
| | - R R Dinglasan
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida, USA.,Department of Infectious Diseases & Immunology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA.,CDC Southeastern Center of Excellence in Vector Borne Diseases, Gainesville, Florida, USA
| | - D K Mathias
- CDC Southeastern Center of Excellence in Vector Borne Diseases, Gainesville, Florida, USA.,Entomology & Nematology Department, Florida Medical Entomology Laboratory, Institute of Food and Agricultural Sciences, University of Florida, Vero Beach, Florida, USA
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40
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Vector Competence of the Invasive Mosquito Species Aedes koreicus for Arboviruses and Interference with a Novel Insect Specific Virus. Viruses 2021; 13:v13122507. [PMID: 34960776 PMCID: PMC8704790 DOI: 10.3390/v13122507] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/10/2021] [Accepted: 12/11/2021] [Indexed: 12/01/2022] Open
Abstract
The global spread of invasive mosquito species increases arbovirus infections. In addition to the invasive species Aedes albopictus and Aedes japonicus, Aedes koreicus has spread within Central Europe. Extensive information on its vector competence is missing. Ae. koreicus from Germany were investigated for their vector competence for chikungunya virus (CHIKV), Zika virus (ZIKV) and West Nile virus (WNV). Experiments were performed under different climate conditions (27 ± 5 °C; 24 ± 5 °C) for fourteen days. Ae. koreicus had the potential to transmit CHIKV and ZIKV but not WNV. Transmission was exclusively observed at the higher temperature, and transmission efficiency was rather low, at 4.6% (CHIKV) or 4.7% (ZIKV). Using a whole virome analysis, a novel mosquito-associated virus, designated Wiesbaden virus (WBDV), was identified in Ae. koreicus. Linking the WBDV infection status of single specimens to their transmission capability for the arboviruses revealed no influence on ZIKV transmission. In contrast, a coinfection of WBDV and CHIKV likely has a boost effect on CHIKV transmission. Due to its current distribution, the risk of arbovirus transmission by Ae. koreicus in Europe is rather low but might gain importance, especially in regions with higher temperatures. The impact of WBDV on arbovirus transmission should be analyzed in more detail.
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Stephenson CJ, Coatsworth H, Waits CM, Nazario-Maldonado NM, Mathias DK, Dinglasan RR, Lednicky JA. Geographic Partitioning of Dengue Virus Transmission Risk in Florida. Viruses 2021; 13:v13112232. [PMID: 34835038 PMCID: PMC8622774 DOI: 10.3390/v13112232] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/28/2021] [Accepted: 11/03/2021] [Indexed: 12/17/2022] Open
Abstract
Dengue viruses (DENVs) cause the greatest public health burden globally among the arthropod-borne viruses. DENV transmission risk has also expanded from tropical to subtropical regions due to the increasing range of its principal mosquito vector, Aedes aegypti. Focal outbreaks of dengue fever (dengue) in the state of Florida (FL) in the USA have increased since 2009. However, little is known about the competence of Ae. aegypti populations across different regions of FL to transmit DENVs. To understand the effects of DENV genotype and serotype variations on vector susceptibility and transmission potential in FL, we orally infected a colony of Ae. aegypti (Orlando/ORL) with low passage or laboratory DENV-1 through -4. Low passage DENVs were more infectious to and had higher transmission potential by ORL mosquitoes. We used these same DENVs to examine natural Ae. aegypti populations to determine whether spatial distributions correlated with differential vector competence. Vector competence across all DENV serotypes was greater for mosquitoes from areas with the highest dengue incidence in south FL compared to north FL. Vector competence for low passage DENVs was significantly higher, revealing that transmission risk is influenced by virus/vector combinations. These data support a targeted mosquito-plus-pathogen screening approach to more accurately estimate DENV transmission risk.
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Affiliation(s)
- Caroline J. Stephenson
- Emerging Pathogens Institute, University of Florida, Gainesville, FL 32608, USA; (C.J.S.); (H.C.); (C.M.W.); (N.M.N.-M.); (D.K.M.)
- Department of Environmental and Global Health, University of Florida, Gainesville, FL 32608, USA
| | - Heather Coatsworth
- Emerging Pathogens Institute, University of Florida, Gainesville, FL 32608, USA; (C.J.S.); (H.C.); (C.M.W.); (N.M.N.-M.); (D.K.M.)
- Department of Infectious Diseases and Immunology, University of Florida, Gainesville, FL 32608, USA
| | - Christy M. Waits
- Emerging Pathogens Institute, University of Florida, Gainesville, FL 32608, USA; (C.J.S.); (H.C.); (C.M.W.); (N.M.N.-M.); (D.K.M.)
- Department of Infectious Diseases and Immunology, University of Florida, Gainesville, FL 32608, USA
- Navy Entomology Center of Excellence, Naval Air Station, Jacksonville, FL 32212, USA
| | - Nicole M. Nazario-Maldonado
- Emerging Pathogens Institute, University of Florida, Gainesville, FL 32608, USA; (C.J.S.); (H.C.); (C.M.W.); (N.M.N.-M.); (D.K.M.)
- Department of Infectious Diseases and Immunology, University of Florida, Gainesville, FL 32608, USA
| | - Derrick K. Mathias
- Emerging Pathogens Institute, University of Florida, Gainesville, FL 32608, USA; (C.J.S.); (H.C.); (C.M.W.); (N.M.N.-M.); (D.K.M.)
- Institute of Food and Agricultural Sciences, Florida Medical Entomology Laboratory, University of Florida, Vero Beach, FL 32962, USA
| | - Rhoel R. Dinglasan
- Emerging Pathogens Institute, University of Florida, Gainesville, FL 32608, USA; (C.J.S.); (H.C.); (C.M.W.); (N.M.N.-M.); (D.K.M.)
- Department of Infectious Diseases and Immunology, University of Florida, Gainesville, FL 32608, USA
- Correspondence: (R.R.D.); (J.A.L.)
| | - John A. Lednicky
- Emerging Pathogens Institute, University of Florida, Gainesville, FL 32608, USA; (C.J.S.); (H.C.); (C.M.W.); (N.M.N.-M.); (D.K.M.)
- Department of Environmental and Global Health, University of Florida, Gainesville, FL 32608, USA
- Correspondence: (R.R.D.); (J.A.L.)
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Duarte MA, Campos FS, Araújo Neto OF, Silva LA, Silva AB, Aguiar TC, Santos RN, Souza UJB, Alves GB, Melo FL, Ardisson-Araujo DMP, Aguiar RWS, Ribeiro BM. Identification of potential new mosquito-associated viruses of adult Aedes aegypti mosquitoes from Tocantins state, Brazil. Braz J Microbiol 2021; 53:51-62. [PMID: 34727360 DOI: 10.1007/s42770-021-00632-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 10/07/2021] [Indexed: 11/29/2022] Open
Abstract
Medically important arboviruses such as dengue virus (DENV), Zika virus (ZIKV), and chikungunya virus (CHIKV) are primarily transmitted by the globally distributed mosquito Aedes aegypti. Increasing evidence suggests that the transmission of some viruses can be influenced by mosquito-specific and mosquito-borne viruses. Advancements in high-throughput sequencing (HTS) and bioinformatics have expanded our knowledge on the richness of viruses harbored by mosquitoes. HTS was used to characterize the presence of virus sequences in wild-caught adult Ae. aegypti from Tocantins (TO) state, Brazil. Samples of mosquitoes were collected in four cities of Tocantins state and submitted to RNA isolation, followed by sequencing at an Illumina HiSeq platform. Our results showed initially by Krona the presence of 3% of the sequenced reads belonging to the viral database. After further analysis, the virus sequences were found to have homology to two viral families found in insects Phenuiviridae and Metaviridae. Three possible viral strains including putative new viruses were detected and named Phasi Charoen-like phasivirus isolate To-1 (PCLV To-1), Aedes aegypti To virus 1 (AAToV1), and Aedes aegypti To virus 2 (AAToV2). The results presented in this work contribute to the growing knowledge about the diversity of viruses in mosquitoes and might be useful for future studies on the interaction between insect-specific viruses and arboviruses.
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Affiliation(s)
- Matheus A Duarte
- Faculdade de Agronomia E Veterinária, Universidade de Brasília, Brasília, DF, 70.910-900, Brazil
| | - Fabrício S Campos
- Laboratório de Bioinformática E Biotecnologia, Universidade Federal Do Tocantins, Campus de Gurupi, Gurupi, TO, 77.402-970, Brazil.
| | - Osvaldo F Araújo Neto
- Laboratório de Bioinformática E Biotecnologia, Universidade Federal Do Tocantins, Campus de Gurupi, Gurupi, TO, 77.402-970, Brazil
| | - Leonardo A Silva
- Departamento de Biologia Celular, Instituto de Biologia, Universidade de Brasília, Brasília, DF, 70.910-900, Brazil
| | - Arthur B Silva
- Laboratório de Bioinformática E Biotecnologia, Universidade Federal Do Tocantins, Campus de Gurupi, Gurupi, TO, 77.402-970, Brazil
| | - Thalita C Aguiar
- Laboratório de Bioinformática E Biotecnologia, Universidade Federal Do Tocantins, Campus de Gurupi, Gurupi, TO, 77.402-970, Brazil
| | - Raissa N Santos
- Laboratório de Bioinformática E Biotecnologia, Universidade Federal Do Tocantins, Campus de Gurupi, Gurupi, TO, 77.402-970, Brazil
| | - Ueric J B Souza
- Laboratório de Bioinformática E Biotecnologia, Universidade Federal Do Tocantins, Campus de Gurupi, Gurupi, TO, 77.402-970, Brazil
| | - Giselly B Alves
- Laboratório de Biologia Molecular, Universidade Federal Do Tocantins, Campus de Gurupi, Gurupi, TO, 77.402-970, Brazil
| | - Fernando L Melo
- Departamento de Fitopatologia, Instituto de Biologia, Universidade de Brasília, Brasília, DF, 70.910-900, Brazil
| | - Daniel M P Ardisson-Araujo
- Laboratório de Virologia de Insetos, Universidade Federal de Santa Maria, Santa Maria, RS, 97.105-900, Brazil
| | - Raimundo W S Aguiar
- Laboratório de Biologia Molecular, Universidade Federal Do Tocantins, Campus de Gurupi, Gurupi, TO, 77.402-970, Brazil
| | - Bergmann M Ribeiro
- Departamento de Biologia Celular, Instituto de Biologia, Universidade de Brasília, Brasília, DF, 70.910-900, Brazil
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Ayers JB, Xie X, Coatsworth H, Stephenson CJ, Waits CM, Shi PY, Dinglasan RR. Infection Kinetics and Transmissibility of a Reanimated Dengue Virus Serotype 4 Identified Originally in Wild Aedes aegypti From Florida. Front Microbiol 2021; 12:734903. [PMID: 34630357 PMCID: PMC8500192 DOI: 10.3389/fmicb.2021.734903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 08/18/2021] [Indexed: 11/29/2022] Open
Abstract
Dengue virus is the most prevalent mosquito-borne virus, causing approximately 390 million infections and 25,000 deaths per year. Aedes aegypti, the primary mosquito vector of dengue virus, is well-established throughout the state of Florida, United States. Autochthonous transmission of dengue virus to humans in Florida has been increasing since 2009, alongside consistent importation of dengue cases. However, most cases of first infection with dengue are asymptomatic and the virus can be maintained in mosquito populations, complicating surveillance and leading to an underestimation of disease risk. Metagenomic sequencing of A. aegypti mosquitoes in Manatee County, Florida revealed the presence of dengue virus serotype 4 (DENV-4) genomes in mosquitoes from multiple trapping sites over 2years, in the absence of a human DENV-4 index case, and even though a locally acquired case of DENV-4 has never been reported in Florida. This finding suggested that: (i) DENV-4 may circulate among humans undetected; (ii) the virus was being maintained in the mosquito population, or (iii) the detected complete genome sequence may not represent a viable virus. This study demonstrates that an infectious clone generated from the Manatee County DENV-4 (DENV-4M) sequence is capable of infecting mammalian and insect tissue culture systems, as well as adult female A. aegypti mosquitoes when fed in a blood meal. However, the virus is subject to a dose dependent infection barrier in mosquitoes, and has a kinetic delay compared to a phylogenetically related wild-type (WT) control virus from a symptomatic child, DENV-4H (strain Homo sapiens/Haiti-0075/2015, GenBank accession MK514144.1). DENV-4M disseminates from the midgut to the ovary and saliva at 14days post-infection. Viral RNA was also detectable in the adult female offspring of DENV-4M infected mosquitoes. These results demonstrate that the virus is capable of infecting vector mosquitoes, is transmissible by bite, and is vertically transmitted, indicating a mechanism for maintenance in the environment without human-mosquito transmission. These findings suggest undetected human-mosquito transmission and/or long-term maintenance of the virus in the mosquito population is occurring in Florida, and underscore the importance of proactive surveillance for viruses in mosquitoes. GRAPHICAL ABSTRACTIn order to better assess the public health risk posed by a detection of DENV-4 RNA in Manatee County, FL Aedes aegypti, we produced an infectious clone using the sequence from the wild-caught mosquitoes and characterized it via laboratory infections of mosquitoes and mosquito tissues.
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Affiliation(s)
- Jasmine B. Ayers
- Emerging Pathogens Institute, University of Florida, Gainesville, FL, United States
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL, United States
| | - Xuping Xie
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX, United States
| | - Heather Coatsworth
- Emerging Pathogens Institute, University of Florida, Gainesville, FL, United States
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL, United States
| | - Caroline J. Stephenson
- Emerging Pathogens Institute, University of Florida, Gainesville, FL, United States
- Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, FL, United States
| | - Christy M. Waits
- Emerging Pathogens Institute, University of Florida, Gainesville, FL, United States
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL, United States
- Navy Entomology Center of Excellence, Naval Air Station, Jacksonville, FL, United States
| | - Pei-Yong Shi
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX, United States
| | - Rhoel R. Dinglasan
- Emerging Pathogens Institute, University of Florida, Gainesville, FL, United States
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL, United States
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Parry R, James ME, Asgari S. Uncovering the Worldwide Diversity and Evolution of the Virome of the Mosquitoes Aedes aegypti and Aedes albopictus. Microorganisms 2021; 9:microorganisms9081653. [PMID: 34442732 PMCID: PMC8398489 DOI: 10.3390/microorganisms9081653] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 07/13/2021] [Accepted: 07/27/2021] [Indexed: 12/16/2022] Open
Abstract
Aedes aegypti, the yellow fever mosquito, and Aedes albopictus, the Asian tiger mosquito, are the most significant vectors of dengue, Zika, and Chikungunya viruses globally. Studies examining host factors that control arbovirus transmission demonstrate that insect-specific viruses (ISVs) can modulate mosquitoes’ susceptibility to arbovirus infection in both in vivo and in vitro co-infection models. While research is ongoing to implicate individual ISVs as proviral or antiviral factors, we have a limited understanding of the composition and diversity of the Aedes virome. To address this gap, we used a meta-analysis approach to uncover virome diversity by analysing ~3000 available RNA sequencing libraries representing a worldwide geographic range for both mosquitoes. We identified ten novel viruses and previously characterised viruses, including mononegaviruses, orthomyxoviruses, negeviruses, and a novel bi-segmented negev-like group. Phylogenetic analysis suggests close relatedness to mosquito viruses implying likely insect host range except for one arbovirus, the multi-segmented Jingmen tick virus (Flaviviridae) in an Italian colony of Ae. albopictus. Individual mosquito transcriptomes revealed remarkable inter-host variation of ISVs within individuals from the same colony and heterogeneity between different laboratory strains. Additionally, we identified striking virus diversity in Wolbachia infected Aedes cell lines. This study expands our understanding of the virome of these important vectors. It provides a resource for further assessing the ecology, evolution, and interaction of ISVs with their mosquito hosts and the arboviruses they transmit.
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Affiliation(s)
- Rhys Parry
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
- Correspondence:
| | - Maddie E James
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia; (M.E.J.); (S.A.)
| | - Sassan Asgari
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia; (M.E.J.); (S.A.)
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45
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Interactions of the Insect-Specific Palm Creek Virus with Zika and Chikungunya Viruses in Aedes Mosquitoes. Microorganisms 2021; 9:microorganisms9081652. [PMID: 34442731 PMCID: PMC8402152 DOI: 10.3390/microorganisms9081652] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 11/17/2022] Open
Abstract
Palm Creek virus (PCV) is an insect-specific flavivirus that can interfere with the replication of mosquito-borne flaviviruses in Culex mosquitoes, thereby potentially reducing disease transmission. We examined whether PCV could interfere with arbovirus replication in Aedes (Ae.) aegypti and Ae. albopictus mosquitoes, major vectors for many prominent mosquito-borne viral diseases. We infected laboratory colonies of Ae. aegypti and Ae. albopictus with PCV to evaluate infection dynamics. PCV infection was found to persist to at least 21 days post-infection and could be detected in the midguts and ovaries. We then assayed for PCV-arbovirus interference by orally challenging PCV-infected mosquitoes with Zika and chikungunya viruses. For both arboviruses, PCV infection had no effect on infection and transmission rates, indicating limited potential as a method of intervention for Aedes-transmitted arboviruses. We also explored the hypothesis that PCV-arbovirus interference is mediated by the small interfering RNA pathway in silico. Our findings indicate that RNA interference is unlikely to underlie the mechanism of arbovirus inhibition and emphasise the need for empirical examination of individual pairs of insect-specific viruses and arboviruses to fully understand their impact on arbovirus transmission.
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46
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Morais P, Trovão NS, Abecasis AB, Parreira R. Genetic lineage characterization and spatiotemporal dynamics of classical insect-specific flaviviruses: outcomes and limitations. Virus Res 2021; 303:198507. [PMID: 34271039 DOI: 10.1016/j.virusres.2021.198507] [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: 04/14/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 12/28/2022]
Abstract
The genus Flavivirus incorporates bona fide arboviruses, as well as others viruses with restricted replication in insect cells. Among the latter, a large monophyletic cluster of viruses, known as cISF (classical insect-specific flaviviruses), has been sampled in many species of mosquitoes collected over a large geographic range. In this study, we investigated nucleotide and protein sequences with a suite of molecular characterization approaches including genetic distance, Shannon entropy, selective pressure analysis, polymorphism identification, principal coordinate analysis, likelihood mapping, phylodynamic reconstruction, and spatiotemporal dispersal, to further characterize this diverse group of insect-viruses. The different lineages and sub-lineages of viral sequences presented low sequence diversity and entropy (though some displayed lineage-specific polymorphisms), did not show evidence of frequent recombination and evolved under strong purifying selection. Moreover, the reconstruction of the evolutionary history and spatiotemporal dispersal was highly impacted by overall low signals of sequence divergence throughout time but suggested that cISF distribution in space and time is dynamic and may be dependent on human activities, including commercial trading and traveling.
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Affiliation(s)
- Paulo Morais
- Unidade de Microbiologia Médica, Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (NOVA), Lisboa, Portugal/Global Health and Tropical Medicine (GHTM), Lisboa, Portugal
| | - Nídia S Trovão
- Division of International Epidemiology and Population Studies, Fogarty International Center, National Institutes of Health, Bethesda, MD, USA
| | - Ana B Abecasis
- Unidade de Saúde Pública Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (NOVA), Lisboa, Portugal/Global Health and Tropical Medicine (GHTM), Lisboa, Portugal
| | - Ricardo Parreira
- Unidade de Microbiologia Médica, Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (NOVA), Lisboa, Portugal/Global Health and Tropical Medicine (GHTM), Lisboa, Portugal.
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47
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Transmission Potential of Floridian Aedes aegypti Mosquitoes for Dengue Virus Serotype 4: Implications for Estimating Local Dengue Risk. mSphere 2021; 6:e0027121. [PMID: 34232077 PMCID: PMC8386419 DOI: 10.1128/msphere.00271-21] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Dengue virus serotype 4 (DENV-4) circulated in Aedes aegypti in 2016 and 2017 in Florida in the absence of human index cases, compelling a full assessment of local mosquito vector competence and DENV-4 risk. To better understand DENV-4 transmission risk in Florida, we used an expanded suite of tests to measure and compare the vector competencies of both an established colony of A. aegypti (Orlando strain [ORL]) and a field-derived colony from Collier County, FL, in 2018 (COL) for a Haitian DENV-4 human field isolate and a DENV-4 laboratory strain (Philippines H241). We immediately noted that ORL saliva positivity was higher for the field than for laboratory DENV-4 strains. In a subsequent comparison with the recent COL mosquito colony, we also observed significantly higher midgut infection of COL and ORL by the Haitian DENV-4 field strain and a significantly higher saliva positivity rate for COL, although overall saliva virus titers were similar between the two. These data point to a potential midgut infection barrier for the DENV-4 laboratory strain for both mosquito colonies and indicate that the marked differences in transmission potential estimates hinge on virus-vector combinations. Our study highlights the importance of leveraging an expanded suite of testing methods with emphasis on utilizing local mosquito populations and field-relevant dengue virus serotypes and strains to accurately estimate transmission risk in a given setting. IMPORTANCE DENV-4 was found circulating in Florida (FL) A. aegypti mosquitoes in the absence of human index cases in the state (2016 to 2017). How DENV-4 was maintained locally is unclear, presenting a major gap in our understanding of DENV-4 public health risk. We determined the baseline arbovirus transmission potential of laboratory and field colonies of A. aegypti for both laboratory and field isolates of DENV-4. We observed a high transmission potential of field populations of A. aegypti and evidence of higher vertical transmission of the DENV-4 field isolate, providing clues to the possible mechanism of undetected DENV-4 maintenance in the state. Our findings also move the field forward in the development of best practices for evaluating arbovirus vector competence, with evidence that transmission potential estimates vary depending on the mosquito-virus combinations. These data emphasize the poor suitability of laboratory-established virus strains and the high relevance of field-derived mosquito populations in estimating transmission risk.
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48
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Abstract
Negeviruses are a group of insect-specific viruses (ISVs) that have been found in many arthropods. Their presence in important vector species led us to examine their interactions with arboviruses during coinfections. Wild-type negeviruses reduced the replication of several alphaviruses during coinfections in mosquito cells. Negev virus (NEGV) isolates were also used to express green fluorescent protein (GFP) and anti-chikungunya virus (CHIKV) antibody fragments during coinfections with CHIKV. NEGV expressing anti-CHIKV antibody fragments was able to further reduce replication of CHIKV during coinfections, while reductions of CHIKV with NEGV expressing GFP were similar to titers with wild-type NEGV alone. These results are the first to show that negeviruses induce superinfection exclusion of arboviruses and to demonstrate a novel approach to deliver antiviral antibody fragments with paratransgenic ISVs. The ability to inhibit arbovirus replication and express exogenous proteins in mosquito cells makes negeviruses a promising platform for control of arthropod-borne pathogens. IMPORTANCE Negeviruses are a group of insect-specific viruses (ISVs), viruses known to infect only insects. They have been discovered over a wide geographical and species range. Their ability to infect mosquito species that transmit dangerous arboviruses makes negeviruses a candidate for a pathogen control platform. Coinfections of mosquito cells with a negevirus and an alphavirus demonstrated that negeviruses can inhibit the replication of alphaviruses. Additionally, modifying Negev virus (NEGV) to express a fragment of an anti-CHIKV antibody further reduced the replication of CHIKV in coinfected cells. This is the first evidence to demonstrate that negeviruses can inhibit the replication of important arboviruses in mosquito cells. The ability of a modified NEGV to drive the expression of antiviral proteins also highlights a method for negeviruses to target specific pathogens and limit the incidence of vector-borne diseases.
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49
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Auerswald H, Maquart PO, Chevalier V, Boyer S. Mosquito Vector Competence for Japanese Encephalitis Virus. Viruses 2021; 13:v13061154. [PMID: 34208737 PMCID: PMC8234777 DOI: 10.3390/v13061154] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/02/2021] [Accepted: 06/02/2021] [Indexed: 12/30/2022] Open
Abstract
Japanese encephalitis virus (JEV) is a zoonotic pathogen mainly found in East and Southeast Asia and transmitted by mosquitoes. The objective of this review is to summarize the knowledge on the diversity of JEV mosquito vector species. Therefore, we systematically analyzed reports of JEV found in field-caught mosquitoes as well as experimental vector competence studies. Based on the investigated publications, we classified 14 species as confirmed vectors for JEV due to their documented experimental vector competence and evidence of JEV found in wild mosquitoes. Additionally, we identified 11 mosquito species, belonging to five genera, with an experimentally confirmed vector competence for JEV but lacking evidence on their JEV transmission capacity from field-caught mosquitoes. Our study highlights the diversity of confirmed and potential JEV vector species. We also emphasize the variety in the study design of vector competence investigations. To account for the diversity of the vector species and regional circumstances, JEV vector competence should be studied in the local context, using local mosquitoes with local virus strains under local climate conditions to achieve reliable data. In addition, harmonization of the design of vector competence experiments would lead to better comparable data, informing vector and disease control measures.
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Affiliation(s)
- Heidi Auerswald
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh 120210, Cambodia
- Correspondence:
| | - Pierre-Olivier Maquart
- Medical and Veterinary Entomology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh 120210, Cambodia; (P.-O.M.); (S.B.)
| | - Véronique Chevalier
- Epidemiology and Public Health Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh 120210, Cambodia;
- UMR ASTRE, CIRAD, INRA, Université de Montpellier, 34000 Montpellier, France
| | - Sebastien Boyer
- Medical and Veterinary Entomology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh 120210, Cambodia; (P.-O.M.); (S.B.)
- Institut Pasteur, 75015 Paris, France
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50
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de Almeida JP, Aguiar ER, Armache JN, Olmo RP, Marques JT. The virome of vector mosquitoes. Curr Opin Virol 2021; 49:7-12. [PMID: 33991759 DOI: 10.1016/j.coviro.2021.04.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/05/2021] [Accepted: 04/05/2021] [Indexed: 11/30/2022]
Abstract
Mosquitoes are the major vectors for arthropod-borne viruses (arboviruses) of medical importance. Aedes aegypti and A. albopictus are the most prolific and widespread mosquito vectors being responsible for global transmission of dengue, Zika and Chikungunya viruses. Characterizing the collection of viruses circulating in mosquitoes, the virome, has long been of special interest. In addition to arboviruses, mosquitoes carry insect-specific viruses (ISVs) that do not directly infect vertebrates. Mounting evidence indicates that ISVs interact with arboviruses and may affect mosquito vector competence. Here, we review our current knowledge about the virome of vector mosquitoes and discuss the challenges for the field that may lead to novel strategies to prevent outbreaks of arboviruses.
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Affiliation(s)
- João Pp de Almeida
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte CEP 31270901, Minas Gerais, Brazil
| | - Eric Rgr Aguiar
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte CEP 31270901, Minas Gerais, Brazil; Department of Biological Science (DCB), Center of Biotechnology and Genetics (CBG), State University of Santa Cruz (UESC), Rodovia Ilhéus-Itabuna km 16, Ilhéus 45652-900, Brazil
| | - Juliana N Armache
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte CEP 31270901, Minas Gerais, Brazil
| | - Roenick P Olmo
- Université de Strasbourg, CNRS UPR9022, INSERM U1257, Strasbourg 67084, France
| | - João T Marques
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte CEP 31270901, Minas Gerais, Brazil; Université de Strasbourg, CNRS UPR9022, INSERM U1257, Strasbourg 67084, France.
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