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de Faria IJS, de Almeida JPP, Marques JT. Impact of symbiotic insect-specific viruses on mosquito vector competence for arboviruses. Curr Opin Insect Sci 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] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [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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2
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Estevez-Castro CF, Rodrigues MF, Babarit A, Ferreira FV, de Andrade EG, Marois E, Cogni R, Aguiar ERGR, Marques JT, Olmo RP. Neofunctionalization driven by positive selection led to the retention of the loqs2 gene encoding an Aedes specific dsRNA binding protein. BMC Biol 2024; 22:14. [PMID: 38273313 PMCID: PMC10809485 DOI: 10.1186/s12915-024-01821-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 01/10/2024] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND Mosquito borne viruses, such as dengue, Zika, yellow fever and Chikungunya, cause millions of infections every year. These viruses are mostly transmitted by two urban-adapted mosquito species, Aedes aegypti and Aedes albopictus. Although mechanistic understanding remains largely unknown, Aedes mosquitoes may have unique adaptations that lower the impact of viral infection. Recently, we reported the identification of an Aedes specific double-stranded RNA binding protein (dsRBP), named Loqs2, that is involved in the control of infection by dengue and Zika viruses in mosquitoes. Preliminary analyses suggested that the loqs2 gene is a paralog of loquacious (loqs) and r2d2, two co-factors of the RNA interference (RNAi) pathway, a major antiviral mechanism in insects. RESULTS Here we analyzed the origin and evolution of loqs2. Our data suggest that loqs2 originated from two independent duplications of the first double-stranded RNA binding domain of loqs that occurred before the origin of the Aedes Stegomyia subgenus, around 31 million years ago. We show that the loqs2 gene is evolving under relaxed purifying selection at a faster pace than loqs, with evidence of neofunctionalization driven by positive selection. Accordingly, we observed that Loqs2 is localized mainly in the nucleus, different from R2D2 and both isoforms of Loqs that are cytoplasmic. In contrast to r2d2 and loqs, loqs2 expression is stage- and tissue-specific, restricted mostly to reproductive tissues in adult Ae. aegypti and Ae. albopictus. Transgenic mosquitoes engineered to express loqs2 ubiquitously undergo developmental arrest at larval stages that correlates with massive dysregulation of gene expression without major effects on microRNAs or other endogenous small RNAs, classically associated with RNA interference. CONCLUSIONS Our results uncover the peculiar origin and neofunctionalization of loqs2 driven by positive selection. This study shows an example of unique adaptations in Aedes mosquitoes that could ultimately help explain their effectiveness as virus vectors.
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Affiliation(s)
- Carlos F Estevez-Castro
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Brazil
- CNRS UPR9022, Inserm U1257, Université de Strasbourg, 67084, Strasbourg, France
| | - Murillo F Rodrigues
- Institute of Ecology and Evolution, University of Oregon, Eugene, OR, 97403-5289, USA
| | - Antinéa Babarit
- CNRS UPR9022, Inserm U1257, Université de Strasbourg, 67084, Strasbourg, France
| | - Flávia V Ferreira
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Brazil
| | - Elisa G de Andrade
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Brazil
- CNRS UPR9022, Inserm U1257, Université de Strasbourg, 67084, Strasbourg, France
| | - Eric Marois
- CNRS UPR9022, Inserm U1257, Université de Strasbourg, 67084, Strasbourg, France
| | - Rodrigo Cogni
- Department of Ecology, Institute of Biosciences, University of São Paulo, São Paulo, 05508-090, Brazil
| | - Eric R G R Aguiar
- Department of Biological Science, Center of Biotechnology and Genetics, State University of Santa Cruz, Ilhéus, 45662-900, Brazil
| | - João T Marques
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Brazil.
- CNRS UPR9022, Inserm U1257, Université de Strasbourg, 67084, Strasbourg, France.
| | - Roenick P Olmo
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Brazil.
- CNRS UPR9022, Inserm U1257, Université de Strasbourg, 67084, Strasbourg, France.
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3
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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de Faria IJS, Imler JL, Marques JT. Protocol for the analysis of double-stranded RNAs in virus-infected insect cells using anti-dsRNA antibodies. STAR Protoc 2023; 4:102033. [PMID: 36853733 PMCID: PMC9852956 DOI: 10.1016/j.xpro.2022.102033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/30/2022] [Accepted: 12/27/2022] [Indexed: 01/16/2023] Open
Abstract
Characterization of double-stranded (ds)RNAs is relevant to the understanding of viral replication and immune sensing. Here, we provide a protocol describing the use of anti-dsRNA antibodies for immunofluorescence and immunoblotting in virus-infected insect cells, which can also be applied to tissues and other organisms. We describe the procedures to prepare insect cells for viral infection, followed by RNA extraction and in vitro production of synthetic dsRNA controls. We then detail the steps for dsRNA detection by immunoblotting and immunofluorescence. For complete details on the use and execution of this protocol, please refer to de Faria et al. (2022).1.
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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.
| | - Jean-Luc Imler
- Université de Strasbourg, CNRS UPR9022, INSERM U1257, 67084 Strasbourg, France
| | - 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, CNRS UPR9022, INSERM U1257, 67084 Strasbourg, France.
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5
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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6
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de Faria IJS, Aguiar ERGR, Olmo RP, Alves da Silva J, Daeffler L, Carthew RW, Imler JL, Marques JT. Invading viral DNA triggers dsRNA synthesis by RNA polymerase II to activate antiviral RNA interference in Drosophila. Cell Rep 2022; 39:110976. [PMID: 35732126 PMCID: PMC10041815 DOI: 10.1016/j.celrep.2022.110976] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 03/24/2022] [Accepted: 05/26/2022] [Indexed: 11/03/2022] Open
Abstract
dsRNA sensing triggers antiviral responses against RNA and DNA viruses in diverse eukaryotes. In Drosophila, Invertebrate iridescent virus 6 (IIV-6), a large DNA virus, triggers production of small interfering RNAs (siRNAs) by the dsRNA sensor Dicer-2. Here, we show that host RNA polymerase II (RNAPII) bidirectionally transcribes specific AT-rich regions of the IIV-6 DNA genome to generate dsRNA. Both replicative and naked IIV-6 genomes trigger production of dsRNA in Drosophila cells, implying direct sensing of invading DNA. Loquacious-PD, a Dicer-2 co-factor essential for the biogenesis of endogenous siRNAs, is dispensable for processing of IIV-6-derived dsRNAs, which suggests that they are distinct. Consistent with this finding, inhibition of the RNAPII co-factor P-TEFb affects the synthesis of endogenous, but not virus-derived, dsRNA. Altogether, our results suggest that a non-canonical RNAPII complex recognizes invading viral DNA to synthesize virus-derived dsRNA, which activates the antiviral siRNA pathway in Drosophila.
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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; Université de Strasbourg, CNRS UPR9022, INSERM U1257, 67084 Strasbourg, France
| | - Eric R G R Aguiar
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, Brazil; Department of Biological Science (DCB), Center of Biotechnology and Genetics (CBG), Universidade Estadual de Santa Cruz (UESC), 45662-900 Ilhéus, Brazil
| | - Roenick P Olmo
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, Brazil; Université de Strasbourg, CNRS UPR9022, INSERM U1257, 67084 Strasbourg, France
| | - Juliana Alves da Silva
- Department of Morphology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, Brazil
| | - Laurent Daeffler
- Université de Strasbourg, CNRS UPR9022, INSERM U1257, 67084 Strasbourg, France
| | - Richard W Carthew
- Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA; NSF Simons Center for Quantitative Biology, Northwestern University, Evanston, IL 60208, USA
| | - Jean-Luc Imler
- Université de Strasbourg, CNRS UPR9022, INSERM U1257, 67084 Strasbourg, France
| | - 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, CNRS UPR9022, INSERM U1257, 67084 Strasbourg, France.
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7
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Leite THJF, Ferreira ÁGA, Imler JL, Marques JT. Distinct Roles of Hemocytes at Different Stages of Infection by Dengue and Zika Viruses in Aedes aegypti Mosquitoes. Front Immunol 2021; 12:660873. [PMID: 34093550 PMCID: PMC8169962 DOI: 10.3389/fimmu.2021.660873] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/30/2021] [Indexed: 12/21/2022] Open
Abstract
Aedes aegypti mosquitoes are vectors for arboviruses of medical importance such as dengue (DENV) and Zika (ZIKV) viruses. Different innate immune pathways contribute to the control of arboviruses in the mosquito vector including RNA interference, Toll and Jak-STAT pathways. However, the role of cellular responses mediated by circulating macrophage-like cells known as hemocytes remains unclear. Here we show that hemocytes are recruited to the midgut of Ae. aegypti mosquitoes in response to DENV or ZIKV. Blockade of the phagocytic function of hemocytes using latex beads induced increased accumulation of hemocytes in the midgut and a reduction in virus infection levels in this organ. In contrast, inhibition of phagocytosis by hemocytes led to increased systemic dissemination and replication of DENV and ZIKV. Hence, our work reveals a dual role for hemocytes in Ae. aegypti mosquitoes, whereby phagocytosis is not required to control viral infection in the midgut but is essential to restrict systemic dissemination. Further understanding of the mechanism behind this duality could help the design of vector-based strategies to prevent transmission of arboviruses.
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Affiliation(s)
- Thiago H J F Leite
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Álvaro G A Ferreira
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou - Fiocruz, Belo Horizonte, Brazil
| | - 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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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] [What about the content of this article? (0)] [Affiliation(s)] [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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9
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Olmo IG, Olmo RP, Gonçalves ANA, Pires RGW, Marques JT, Ribeiro FM. High-Throughput Sequencing of BACHD Mice Reveals Upregulation of Neuroprotective miRNAs at the Pre-Symptomatic Stage of Huntington's Disease. ASN Neuro 2021; 13:17590914211009857. [PMID: 33906482 PMCID: PMC8718118 DOI: 10.1177/17590914211009857] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Huntington’s disease (HD) is a genetic disorder marked by transcriptional alterations that result in neuronal impairment and death. MicroRNAs (miRNAs) are non-coding RNAs involved in post-transcriptional regulation and fine-tuning of gene expression. Several studies identified altered miRNA expression in HD and other neurodegenerative diseases, however their roles in early stages of HD remain elusive. Here, we deep-sequenced miRNAs from the striatum of the HD mouse model, BACHD, at the age of 2 and 8 months, representing the pre-symptomatic and symptomatic stages of the disease. Our results show that 44 and 26 miRNAs were differentially expressed in 2- and 8-month-old BACHD mice, respectively, as compared to wild-type controls. Over-representation analysis suggested that miRNAs up-regulated in 2-month-old mice control the expression of genes crucial for PI3K-Akt and mTOR cell signaling pathways. Conversely, miRNAs regulating genes involved in neuronal disorders were down-regulated in 2-month-old BACHD mice. Interestingly, primary striatal neurons treated with anti-miRs targeting two up-regulated miRNAs, miR-449c-5p and miR-146b-5p, showed higher levels of cell death. Therefore, our results suggest that the miRNAs altered in 2-month-old BACHD mice regulate genes involved in the promotion of cell survival. Notably, over-representation suggested that targets of differentially expressed miRNAs at the age of 8 months were not significantly enriched for the same pathways. Together, our data shed light on the role of miRNAs in the initial stages of HD, suggesting a neuroprotective role as an attempt to maintain or reestablish cellular homeostasis.
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Affiliation(s)
- Isabella G Olmo
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, Belo Horizonte, Brazil
| | - Roenick P Olmo
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, Belo Horizonte, Brazil.,CNRS UPR9022, Inserm U1257, Institut de Biologie Moléculaire et Cellulaire, Université de Strasbourg, Strasbourg, France
| | - André N A Gonçalves
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, Universidade de São Paulo, São Paulo, Brazil
| | - Rita G W Pires
- Department of Physiological Sciences, Center for Health Sciences, Universidade Federal do Espirito Santo, Vitoria, Brazil
| | - João T Marques
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, Belo Horizonte, Brazil.,CNRS UPR9022, Inserm U1257, Institut de Biologie Moléculaire et Cellulaire, Université de Strasbourg, Strasbourg, France
| | - Fabíola M Ribeiro
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, Belo Horizonte, Brazil
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de Mendonça SF, Rocha MN, Ferreira FV, Leite THJF, Amadou SCG, Sucupira PHF, Marques JT, Ferreira AGA, Moreira LA. Evaluation of Aedes aegypti, Aedes albopictus, and Culex quinquefasciatus Mosquitoes Competence to Oropouche virus Infection. Viruses 2021; 13:v13050755. [PMID: 33923055 PMCID: PMC8145018 DOI: 10.3390/v13050755] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 03/31/2021] [Accepted: 04/01/2021] [Indexed: 12/22/2022] Open
Abstract
The emergence of new human viral pathogens and re-emergence of several diseases are of particular concern in the last decades. Oropouche orthobunyavirus (OROV) is an arbovirus endemic to South and Central America tropical regions, responsible to several epidemic events in the last decades. There is little information regarding the ability of OROV to be transmitted by urban/peri-urban mosquitoes, which has limited the predictability of the emergence of permanent urban transmission cycles. Here, we evaluated the ability of OROV to infect, replicate, and be transmitted by three anthropophilic and urban species of mosquitoes, Aedes aegypti, Aedes albopictus, and Culex quinquefasciatus. We show that OROV is able to infect and efficiently replicate when systemically injected in all three species tested, but not when orally ingested. Moreover, we find that, once OROV replication has occurred in the mosquito body, all three species were able to transmit the virus to immunocompromised mice during blood feeding. These data provide evidence that OROV is restricted by the midgut barrier of three major urban mosquito species, but, if this restriction is overcome, could be efficiently transmitted to vertebrate hosts. This poses a great risk for the emergence of permanent urban cycles and geographic expansion of OROV to other continents.
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Affiliation(s)
- Silvana F. de Mendonça
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou—Fiocruz, Belo Horizonte 30190-002, MG, Brazil; (S.F.d.M.); (M.N.R.); (P.H.F.S.); (A.G.A.F.)
| | - Marcele N. Rocha
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou—Fiocruz, Belo Horizonte 30190-002, MG, Brazil; (S.F.d.M.); (M.N.R.); (P.H.F.S.); (A.G.A.F.)
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha, Belo Horizonte 31270-901, MG, Brazil; (F.V.F.); (T.H.J.F.L.); (S.C.G.A.); (J.T.M.)
| | - Flávia V. Ferreira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha, Belo Horizonte 31270-901, MG, Brazil; (F.V.F.); (T.H.J.F.L.); (S.C.G.A.); (J.T.M.)
| | - Thiago H. J. F Leite
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha, Belo Horizonte 31270-901, MG, Brazil; (F.V.F.); (T.H.J.F.L.); (S.C.G.A.); (J.T.M.)
| | - Siad C. G. Amadou
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha, Belo Horizonte 31270-901, MG, Brazil; (F.V.F.); (T.H.J.F.L.); (S.C.G.A.); (J.T.M.)
| | - Pedro H. F. Sucupira
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou—Fiocruz, Belo Horizonte 30190-002, MG, Brazil; (S.F.d.M.); (M.N.R.); (P.H.F.S.); (A.G.A.F.)
| | - João T. Marques
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha, Belo Horizonte 31270-901, MG, Brazil; (F.V.F.); (T.H.J.F.L.); (S.C.G.A.); (J.T.M.)
- Faculté des Sciences de laVie, Université de Strasbourg, CNRS UPR9022, Inserm U1257, 67084 Strasbourg, France
| | - Alvaro G. A. Ferreira
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou—Fiocruz, Belo Horizonte 30190-002, MG, Brazil; (S.F.d.M.); (M.N.R.); (P.H.F.S.); (A.G.A.F.)
| | - Luciano A. Moreira
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou—Fiocruz, Belo Horizonte 30190-002, MG, Brazil; (S.F.d.M.); (M.N.R.); (P.H.F.S.); (A.G.A.F.)
- Correspondence:
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11
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Cai H, Holleufer A, Simonsen B, Schneider J, Lemoine A, Gad HH, Huang J, Huang J, Chen D, Peng T, Marques JT, Hartmann R, Martins NE, Imler JL. 2'3'-cGAMP triggers a STING- and NF-κB-dependent broad antiviral response in Drosophila. Sci Signal 2020; 13:13/660/eabc4537. [PMID: 33262294 DOI: 10.1126/scisignal.abc4537] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We previously reported that an ortholog of STING regulates infection by picorna-like viruses in Drosophila In mammals, STING is activated by the cyclic dinucleotide 2'3'-cGAMP produced by cGAS, which acts as a receptor for cytosolic DNA. Here, we showed that injection of flies with 2'3'-cGAMP induced the expression of dSTING-regulated genes. Coinjection of 2'3'-cGAMP with a panel of RNA or DNA viruses resulted in substantially reduced viral replication. This 2'3'-cGAMP-mediated protection was still observed in flies with mutations in Atg7 and AGO2, genes that encode key components of the autophagy and small interfering RNA pathways, respectively. By contrast, this protection was abrogated in flies with mutations in the gene encoding the NF-κB transcription factor Relish. Transcriptomic analysis of 2'3'-cGAMP-injected flies revealed a complex response pattern in which genes were rapidly induced, induced after a delay, or induced in a sustained manner. Our results reveal that dSTING regulates an NF-κB-dependent antiviral program that predates the emergence of interferons in vertebrates.
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Affiliation(s)
- Hua Cai
- Sino-French Hoffmann Institute, State Key Laboratory of Respiratory Disease, School of Basic Medical Science, Guangzhou Medical University, Guangzhou 511436, China.,Université de Strasbourg, CNRS UPR 9022, 67084 Strasbourg, France
| | - Andreas Holleufer
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus C, Denmark
| | - Bine Simonsen
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus C, Denmark
| | | | - Aurélie Lemoine
- Université de Strasbourg, CNRS UPR 9022, 67084 Strasbourg, France
| | - Hans Henrik Gad
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus C, Denmark
| | - Jingxian Huang
- Sino-French Hoffmann Institute, State Key Laboratory of Respiratory Disease, School of Basic Medical Science, Guangzhou Medical University, Guangzhou 511436, China
| | - Jieqing Huang
- Sino-French Hoffmann Institute, State Key Laboratory of Respiratory Disease, School of Basic Medical Science, Guangzhou Medical University, Guangzhou 511436, China
| | - Di Chen
- Sino-French Hoffmann Institute, State Key Laboratory of Respiratory Disease, School of Basic Medical Science, Guangzhou Medical University, Guangzhou 511436, China
| | - Tao Peng
- Sino-French Hoffmann Institute, State Key Laboratory of Respiratory Disease, School of Basic Medical Science, Guangzhou Medical University, Guangzhou 511436, China
| | - João T Marques
- Université de Strasbourg, CNRS UPR 9022, INSERM U1257, 67084 Strasbourg, France.,Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais CEP 31270901, Brazil
| | - Rune Hartmann
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus C, Denmark.
| | - Nelson E Martins
- Université de Strasbourg, CNRS UPR 9022, 67084 Strasbourg, France.
| | - Jean-Luc Imler
- Sino-French Hoffmann Institute, State Key Laboratory of Respiratory Disease, School of Basic Medical Science, Guangzhou Medical University, Guangzhou 511436, China.,Université de Strasbourg, CNRS UPR 9022, 67084 Strasbourg, France
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12
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Sucupira PHF, Ferreira ÁGA, Leite THJF, de Mendonça SF, Ferreira FV, Rezende FO, Marques JT, Moreira LA. The RNAi Pathway Is Important to Control Mayaro Virus Infection in Aedes aegypti but not for Wolbachia-Mediated Protection. Viruses 2020; 12:v12080871. [PMID: 32784948 PMCID: PMC7547387 DOI: 10.3390/v12080871] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/15/2020] [Accepted: 07/27/2020] [Indexed: 01/02/2023] Open
Abstract
Mayaro virus (MAYV), a sylvatic arbovirus belonging to the Togaviridae family and Alphavirus genus, is responsible for an increasing number of outbreaks in several countries of Central and South America. Despite Haemagogus janthinomys being identified as the main vector of MAYV, laboratory studies have already demonstrated the competence of Aedes aegypti to transmit MAYV. It has also been demonstrated that the WolbachiawMel strain is able to impair the replication and transmission of MAYV in Ae. aegypti. In Ae. aegypti, the small interfering RNA (siRNA) pathway is an important antiviral mechanism; however, it remains unclear whether siRNA pathway acts against MAYV infection in Ae. aegypti. The main objective of this study was to determine the contribution of the siRNA pathway in the control of MAYV infection. Thus, we silenced the expression of AGO2, an essential component of the siRNA pathway, by injecting dsRNA-targeting AGO2 (dsAGO2). Our results showed that AGO2 is required to control MAYV replication upon oral infection in Wolbachia-free Ae. aegypti. On the other hand, we found that Wolbachia-induced resistance to MAYV in Ae. aegypti is independent of the siRNA pathway. Our study brought new information regarding the mechanism of viral protection, as well as on Wolbachia mediated interference.
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Affiliation(s)
- Pedro H. F. Sucupira
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou – Fiocruz, Belo Horizonte, MG 30190-002, Brazil; (P.H.F.S.); (Á.G.A.F.); (S.F.d.M.); (F.O.R.)
| | - Álvaro G. A. Ferreira
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou – Fiocruz, Belo Horizonte, MG 30190-002, Brazil; (P.H.F.S.); (Á.G.A.F.); (S.F.d.M.); (F.O.R.)
| | - Thiago H. J. F. Leite
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha-Belo Horizonte-MG, CEP 30270-901, Brazil; (T.H.J.F.L.); (F.V.F.); (J.T.M.)
| | - Silvana F. de Mendonça
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou – Fiocruz, Belo Horizonte, MG 30190-002, Brazil; (P.H.F.S.); (Á.G.A.F.); (S.F.d.M.); (F.O.R.)
| | - Flávia V. Ferreira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha-Belo Horizonte-MG, CEP 30270-901, Brazil; (T.H.J.F.L.); (F.V.F.); (J.T.M.)
| | - Fernanda O. Rezende
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou – Fiocruz, Belo Horizonte, MG 30190-002, Brazil; (P.H.F.S.); (Á.G.A.F.); (S.F.d.M.); (F.O.R.)
| | - João T. Marques
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha-Belo Horizonte-MG, CEP 30270-901, Brazil; (T.H.J.F.L.); (F.V.F.); (J.T.M.)
- Université de Strasbourg, CNRS UPR9022, Inserm U1257, 67084 Strasbourg, France
| | - Luciano A. Moreira
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou – Fiocruz, Belo Horizonte, MG 30190-002, Brazil; (P.H.F.S.); (Á.G.A.F.); (S.F.d.M.); (F.O.R.)
- Correspondence: ; Tel.: +55-31-3349-7776
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13
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Olmo RP, Martins NE, Aguiar ERGR, Marques JT, Imler JL. The insect reservoir of biodiversity for viruses and for antiviral mechanisms. AN ACAD BRAS CIENC 2019; 91 Suppl 3:e20190122. [PMID: 31166476 DOI: 10.1590/0001-3765201920190122] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 03/23/2019] [Indexed: 01/13/2023] Open
Abstract
Insects are the most diverse group of animals. They can be infected by an extraordinary diversity of viruses. Among them, arthropod-borne viruses (arboviruses) can be transmitted to humans. High-throughput sequencing of small RNAs from insects provides insight into their virome, which may help understand the dynamics of vector borne infectious diseases. Furthermore, investigating the mechanisms that restrict viral infections in insects points to genetic innovations that may inspire novel antiviral strategies.
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Affiliation(s)
- Roenick P Olmo
- Institut de Biologie Moléculaire et Cellulaire, Université de Strasbourg, Strasbourg, France
| | - Nelson Eduardo Martins
- Institut de Biologie Moléculaire et Cellulaire, Université de Strasbourg, Strasbourg, France
| | - Eric Roberto G R Aguiar
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - João T Marques
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jean-Luc Imler
- Institut de Biologie Moléculaire et Cellulaire, Université de Strasbourg, Strasbourg, France
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14
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Pereira LM, de Castro CM, Guerra LTL, Queiroz TM, Marques JT, Pereira GS. Hippocampus and Prefrontal Cortex Modulation of Contextual Fear Memory Is Dissociated by Inhibiting De Novo Transcription During Late Consolidation. Mol Neurobiol 2019; 56:5507-5519. [DOI: 10.1007/s12035-018-1463-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 12/18/2018] [Indexed: 11/28/2022]
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15
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Donald CL, Varjak M, Aguiar ERGR, Marques JT, Sreenu VB, Schnettler E, Kohl A. Antiviral RNA Interference Activity in Cells of the Predatory Mosquito, Toxorhynchites amboinensis. Viruses 2018; 10:v10120694. [PMID: 30563205 PMCID: PMC6316411 DOI: 10.3390/v10120694] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 11/19/2018] [Accepted: 12/04/2018] [Indexed: 12/13/2022] Open
Abstract
Arthropod vectors control the replication of arboviruses through their innate antiviral immune responses. In particular, the RNA interference (RNAi) pathways are of notable significance for the control of viral infections. Although much has been done to understand the role of RNAi in vector populations, little is known about its importance in non-vector mosquito species. In this study, we investigated the presence of an RNAi response in Toxorhynchites amboinensis, which is a non-blood feeding species proposed as a biological control agent against pest mosquitoes. Using a derived cell line (TRA-171), we demonstrate that these mosquitoes possess a functional RNAi response that is active against a mosquito-borne alphavirus, Semliki Forest virus. As observed in vector mosquito species, small RNAs are produced that target viral sequences. The size and characteristics of these small RNAs indicate that both the siRNA and piRNA pathways are induced in response to infection. Taken together, this data suggests that Tx. amboinensis are able to control viral infections in a similar way to natural arbovirus vector mosquito species. Understanding their ability to manage arboviral infections will be advantageous when assessing these and similar species as biological control agents.
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Affiliation(s)
- Claire L Donald
- MRC-University of Glasgow Centre for Virus Research, Glasgow, Scotland G61 1QH, UK.
| | - Margus Varjak
- MRC-University of Glasgow Centre for Virus Research, Glasgow, Scotland G61 1QH, UK.
| | - Eric Roberto Guimarães Rocha Aguiar
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha-Belo Horizonte-MG, CEP 31270-901, Brazil.
| | - João T Marques
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha-Belo Horizonte-MG, CEP 31270-901, Brazil.
| | - Vattipally B Sreenu
- MRC-University of Glasgow Centre for Virus Research, Glasgow, Scotland G61 1QH, UK.
| | - Esther Schnettler
- MRC-University of Glasgow Centre for Virus Research, Glasgow, Scotland G61 1QH, UK.
| | - Alain Kohl
- MRC-University of Glasgow Centre for Virus Research, Glasgow, Scotland G61 1QH, UK.
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16
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Fonseca PLC, Badotti F, de Oliveira TFP, Fonseca A, Vaz ABM, Tomé LMR, Abrahão JS, Marques JT, Trindade GS, Chaverri P, Aguiar ERGR, Góes-Neto A. Virome analyses of Hevea brasiliensis using small RNA deep sequencing and PCR techniques reveal the presence of a potential new virus. Virol J 2018; 15:184. [PMID: 30477549 PMCID: PMC6258436 DOI: 10.1186/s12985-018-1095-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 11/16/2018] [Indexed: 11/10/2022] Open
Abstract
Background Hevea brasiliensis is an important commercial crop due to the high quality of the latex it produces; however, little is known about viral infections in this plant. The only virus described to infect H. brasiliensis until now is a Carlavirus, which was described more than 30 years ago. Virus-derived small interfering RNA (vsiRNAs) are the product of the plant’s antiviral defense triggered by dsRNA viral intermediates generated, during the replication cycle. These vsiRNAs are complementar to viral genomes and have been widely used to identify and characterize viruses in plants. Methods In the present study, we investigated the virome of leaf and sapwood samples from native H. brasiliensis trees collected in two geographic areas in the Brazilian Amazon. Small RNA (sRNA) deep sequencing and bioinformatic tools were used to assembly, identify and characterize viral contigs. Subsequently, PCR amplification techniques were performed to experimentally verify the presence of the viral sequences. Finally, the phylogenetic relationship of the putative new virus with related viral genomes was analyzed. Results Our strategy allowed the identification of 32 contigs with high similarity to viral reference genomes, from which 23 exhibited homology to viruses of the Tymoviridae family. The reads showed a predominant size distribution at 21 nt derived from both strands, which was consistent with the vsiRNAs profile. The presence and genome position of the viral contigs were experimentally confirmed using droplet digital PCR amplifications. A 1913 aa long fragment was obtained and used to infer the phylogenetic relationship of the putative new virus, which indicated that it is taxonomically related to the Grapevine fleck virus, genus Maculavirus. The putative new virus was named Hevea brasiliensis virus (HBrV) in reference to its host. Conclusion The methodological strategy applied here proved to be efficient in detecting and confirming the presence of new viral sequences on a ‘very difficult to manage’ sample. This is the second time that viral sequences, that could be ascribed as a putative novel virus, associated to the rubber tree has been identified. Electronic supplementary material The online version of this article (10.1186/s12985-018-1095-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Paula L C Fonseca
- Department of Microbiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil
| | - Fernanda Badotti
- Department of Chemistry, Centro Federal de Educação Tecnológica de Minas Gerais (CEFET-MG), Belo Horizonte, MG, 30421-169, Brazil
| | - Tatiana F P de Oliveira
- Department of Microbiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil.,LANAGRO/MG -Laboratório Nacional da Agricultura, Ministério da Agricultura (MAPA), Pedro Leopoldo, MG, 33600-000, Brazil
| | - Antônio Fonseca
- LANAGRO/MG -Laboratório Nacional da Agricultura, Ministério da Agricultura (MAPA), Pedro Leopoldo, MG, 33600-000, Brazil
| | - Aline B M Vaz
- Department of Microbiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil.,Faculdade de Minas (FAMINAS), Belo Horizonte, MG, 31744-007, Brazil
| | - Luiz M R Tomé
- Department of Microbiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil
| | - Jônatas S Abrahão
- Department of Microbiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil
| | - João T Marques
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil
| | - Giliane S Trindade
- Department of Microbiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil
| | - Priscila Chaverri
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, 20742, USA.,Escuela de Biología, Universidad de Costa Rica, San Pedro, San José, 11501-2060, Costa Rica
| | - Eric R G R Aguiar
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil. .,Instituto de Ciências da Saúde, Universidade Federal da Bahia (UFBA), Salvador, BA, ,40110-100, Brazil.
| | - Aristóteles Góes-Neto
- Department of Microbiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil.
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17
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Corsetti PP, de Almeida LA, Gonçalves ANA, Gomes MTR, Guimarães ES, Marques JT, Oliveira SC. miR-181a-5p Regulates TNF-α and miR-21a-5p Influences Gualynate-Binding Protein 5 and IL-10 Expression in Macrophages Affecting Host Control of Brucella abortus Infection. Front Immunol 2018; 9:1331. [PMID: 29942317 PMCID: PMC6004377 DOI: 10.3389/fimmu.2018.01331] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 05/29/2018] [Indexed: 12/13/2022] Open
Abstract
Brucella abortus is a Gram-negative intracellular bacterium that causes a worldwide zoonosis termed brucellosis, which is characterized as a debilitating infection with serious clinical manifestations leading to severe complications. In spite of great advances in studies involving host–B. abortus interactions, there are many gaps related to B. abortus modulation of the host immune response through regulatory mechanisms. Here, we deep sequenced small RNAs from bone marrow-derived macrophages infected with B. abortus, identifying 69 microRNAs (miRNAs) that were differentially expressed during infection. We further validated the expression of four upregulated and five downregulated miRNAs during infection in vitro that displayed the same profile in spleens from infected mice at 1, 3, or 6 days post-infection. Among these miRNAs, mmu-miR-181a-5p (upregulated) or mmu-miR-21a-5p (downregulated) were selected for further analysis. First, we determined that changes in the expression of both miRNAs induced by infection were dependent on the adaptor molecule MyD88. Furthermore, evaluating putative targets of mmu-miR-181a-5p, we demonstrated this miRNA negatively regulates TNF-α expression following Brucella infection. By contrast, miR-21a-5p targets included a negative regulator of IL-10, programmed cell death protein 4, and several guanylate-binding proteins (GBPs). As a result, during infection, miR-21a-5p led to upregulation of IL-10 expression and downregulation of GBP5 in macrophages infected with Brucella. Since GBP5 and IL-10 are important molecules involved in host control of Brucella infection, we decided to investigate the role of mmu-miR-21a-5p in bacterial replication in macrophages. We observed that treating macrophages with a mmu-miR-21a-5p mimic enhanced bacterial growth, whereas transfection of its inhibitor reduced Brucella load in macrophages. Taken together, the results indicate that downregulation of mmu-miR-21a-5p induced by infection increases GBP5 levels and decreases IL-10 expression thus contributing to bacterial control in host cells.
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Affiliation(s)
- Patrícia P Corsetti
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Departmento de Microbiologia e Imunologia, Universidade Federal de Alfenas, Alfenas, Brazil
| | - Leonardo A de Almeida
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Departmento de Microbiologia e Imunologia, Universidade Federal de Alfenas, Alfenas, Brazil
| | - André Nicolau Aquime Gonçalves
- Laboratorio de Sorologia, Microbiologia e Biologia Molecular, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Marco Túlio R Gomes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Erika S Guimarães
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - João T Marques
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Sergio C Oliveira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Instituto Nacional de Ciência e Tecnologia em Doenças Tropicais (INCT-DT), Conselho Nacional de Desenvolvimento Científico e Tecnológico, Ministério de Ciência Tecnologia e Inovação Salvador, Salvador, Brazil
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18
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Marinho FV, Benmerzoug S, Rose S, Campos PC, Marques JT, Báfica A, Barber G, Ryffel B, Oliveira SC, Quesniaux VFJ. The cGAS/STING Pathway Is Important for Dendritic Cell Activation but Is Not Essential to Induce Protective Immunity against Mycobacterium tuberculosis Infection. J Innate Immun 2018; 10:239-252. [PMID: 29791904 DOI: 10.1159/000488952] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 03/28/2018] [Indexed: 12/21/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb) infection remains a major public health concern. The STING (stimulator of interferon genes) pathway contributes to the cytosolic surveillance of host cells. Most studies on the role of STING activation in Mtb infection have focused on macrophages. Moreover, a detailed investigation of the role of STING during Mtb infection in vivo is required. Here, we deciphered the involvement of STING in the activation of dendritic cells (DCs) and the host response to Mtb infection in vivo. In DCs, this adaptor molecule was important for Ifn-β expression and IL-12 production as well as for the surface expression of the activation markers CD40 and CD86. We also documented that Mtb DNA induces STING activation in murine fibroblasts. In vivo Mtb aerogenic infection induced the upregulation of the STING and cGAS (cyclic GMP-AMP synthase) genes, and Ifn-β pulmonary expression was dependent on both sensors. However, mice deficient for STING or cGAS presented a similar outcome to wild-type controls, with no major alterations in body weight gain, bacterial burden, or survival. Lung inflammation, proinflammatory cytokine production, and inflammatory cell recruitment were similar in STING- and cGAS-deficient mice compared to wild-type controls. In summary, although the STING pathway seems to be crucial for DC activation during Mtb infection, it is dispensable for host protection in vivo.
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Affiliation(s)
- Fabio V Marinho
- Centre National de la Recherche Scientifique (CNRS), UMR7355, Orleans, France.,Experimental and Molecular Immunology and Neurogenetics, University of Orleans, Orleans, France.,Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Instituto Nacional de Ciência e Tecnologia em Doenças Tropicais (INCT-DT), Conselho Nacional de Desenvolvimento Científico e Tecnológico, Ministério de Ciência Tecnologia e Inovação Salvador, Bahia, Brazil
| | - Sulayman Benmerzoug
- Centre National de la Recherche Scientifique (CNRS), UMR7355, Orleans, France.,Experimental and Molecular Immunology and Neurogenetics, University of Orleans, Orleans, France
| | - Stephanie Rose
- Centre National de la Recherche Scientifique (CNRS), UMR7355, Orleans, France.,Experimental and Molecular Immunology and Neurogenetics, University of Orleans, Orleans, France
| | - Priscila C Campos
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - João T Marques
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - André Báfica
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Glen Barber
- Department of Cell Biology, University of Miami, Miami, Florida, USA
| | - Bernhard Ryffel
- Centre National de la Recherche Scientifique (CNRS), UMR7355, Orleans, France.,Experimental and Molecular Immunology and Neurogenetics, University of Orleans, Orleans, France
| | - Sergio C Oliveira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Instituto Nacional de Ciência e Tecnologia em Doenças Tropicais (INCT-DT), Conselho Nacional de Desenvolvimento Científico e Tecnológico, Ministério de Ciência Tecnologia e Inovação Salvador, Bahia, Brazil
| | - Valerie F J Quesniaux
- Centre National de la Recherche Scientifique (CNRS), UMR7355, Orleans, France.,Experimental and Molecular Immunology and Neurogenetics, University of Orleans, Orleans, France
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19
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Garcia CC, Tavares LP, Dias ACF, Kehdy F, Alvarado-Arnez LE, Queiroz-Junior CM, Galvão I, Lima BH, Matos AR, Gonçalves APF, Soriani FM, Moraes MO, Marques JT, Siqueira MM, Machado AMV, Sousa LP, Russo RC, Teixeira MM. Phosphatidyl Inositol 3 Kinase-Gamma Balances Antiviral and Inflammatory Responses During Influenza A H1N1 Infection: From Murine Model to Genetic Association in Patients. Front Immunol 2018; 9:975. [PMID: 29867955 PMCID: PMC5962662 DOI: 10.3389/fimmu.2018.00975] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 04/19/2018] [Indexed: 01/07/2023] Open
Abstract
Influenza A virus (IAV) infection causes severe pulmonary disease characterized by intense leukocyte infiltration. Phosphoinositide-3 kinases (PI3Ks) are central signaling enzymes, involved in cell growth, survival, and migration. Class IB PI3K or phosphatidyl inositol 3 kinase-gamma (PI3Kγ), mainly expressed by leukocytes, is involved in cell migration during inflammation. Here, we investigated the contribution of PI3Kγ for the inflammatory and antiviral responses to IAV. PI3Kγ knockout (KO) mice were highly susceptible to lethality following infection with influenza A/WSN/33 H1N1. In the early time points of infection, infiltration of neutrophils was higher than WT mice whereas type-I and type-III IFN expression and p38 activation were reduced in PI3Kγ KO mice resulting in higher viral loads when compared with WT mice. Blockade of p38 in WT macrophages infected with IAV reduced levels of interferon-stimulated gene 15 protein to those induced in PI3Kγ KO macrophages, suggesting that p38 is downstream of antiviral responses mediated by PI3Kγ. PI3Kγ KO-derived fibroblasts or macrophages showed reduced type-I IFN transcription and altered pro-inflammatory cytokines suggesting a cell autonomous imbalance between inflammatory and antiviral responses. Seven days after IAV infection, there were reduced infiltration of natural killer cells and CD8+ T lymphocytes, increased concentration of inflammatory cytokines in bronchoalveolar fluid, reduced numbers of resolving macrophages, and IL-10 levels in PI3Kγ KO. This imbalanced environment in PI3Kγ KO-infected mice culminated in enhanced lung neutrophil infiltration, reactive oxygen species release, and lung damage that together with the increased viral loads, contributed to higher mortality in PI3Kγ KO mice compared with WT mice. In humans, we tested the genetic association of disease severity in influenza A/H1N1pdm09-infected patients with three potentially functional PIK3CG single-nucleotide polymorphisms (SNPs), rs1129293, rs17847825, and rs2230460. We observed that SNPs rs17847825 and rs2230460 (A and T alleles, respectively) were significantly associated with protection from severe disease using the recessive model in patients infected with influenza A(H1N1)pdm09. Altogether, our results suggest that PI3Kγ is crucial in balancing antiviral and inflammatory responses to IAV infection.
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Affiliation(s)
- Cristiana C Garcia
- Laboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil.,Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Luciana P Tavares
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Laboratório de Imunologia e Mecânica Pulmonar, Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ana Carolina F Dias
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Fernanda Kehdy
- Laboratório de Hanseníase, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | - Lucia Elena Alvarado-Arnez
- Laboratório de Hanseníase, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil.,Coordinación Nacional de Investigación, UNIFRANZ, La Paz, Bolivia
| | - Celso M Queiroz-Junior
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Izabela Galvão
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Braulio H Lima
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Laboratório de Inflamação e Dor, Departamento de Farmacologia, Prédio Central, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Aline R Matos
- Laboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | - Ana Paula F Gonçalves
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Laboratório de Imunologia de Doenças Virais, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz (Fiocruz), Belo Horizonte, Brazil
| | - Frederico M Soriani
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Milton O Moraes
- Laboratório de Hanseníase, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | - João T Marques
- Laboratório de RNA de Interferência, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Marilda M Siqueira
- Laboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | - Alexandre M V Machado
- Laboratório de Imunologia de Doenças Virais, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz (Fiocruz), Belo Horizonte, Brazil
| | - Lirlândia P Sousa
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Remo C Russo
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Laboratório de Imunologia e Mecânica Pulmonar, Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Mauro M Teixeira
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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20
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Alves-Silva J, Tavares IP, Guimarães ES, Costa Franco MM, Figueiredo BC, Marques JT, Splitter G, Oliveira SC. Modulation of Microtubule Dynamics Affects Brucella abortus Intracellular Survival, Pathogen-Containing Vacuole Maturation, and Pro-inflammatory Cytokine Production in Infected Macrophages. Front Microbiol 2017; 8:2217. [PMID: 29184543 PMCID: PMC5694624 DOI: 10.3389/fmicb.2017.02217] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 10/27/2017] [Indexed: 01/18/2023] Open
Abstract
The microtubule (MT) cytoskeleton regulates several cellular processes related to the immune system. For instance, an intricate intracellular transport mediated by MTs is responsible for the proper localization of vesicular receptors of innate immunity and its adaptor proteins. In the present study, we used nocodazole to induce MTs depolymerization and paclitaxel or recombinant (r) TIR (Toll/interleukin-1 receptor) domain containing protein (TcpB) to induce MT stabilization in bone marrow-derived macrophages infected with Brucella abortus. Following treatment of the cells, we evaluated their effects on pathogen intracellular replication and survival, and in pro-inflammatory cytokine production. First, we observed that intracellular trafficking and maturation of Brucella-containing vesicles (BCVs) is affected by partial destabilization or stabilization of the MTs network. A typical marker of early BCVs, LAMP-1, is retained in late BCVs even 24 h after infection in the presence of low doses of nocodazole or paclitaxel and in the presence of different amounts of rTcpB. Second, microscopy and colony forming unit analysis revealed that bacterial load was increased in infected macrophages treated with lower doses of nocodazole or paclitaxel and with rTcpB compared to untreated cells. Third, innate immune responses were also affected by disturbing MT dynamics. MT depolymerization by nocodazole reduced IL-12 production in infected macrophages. Conversely, rTcpB-treated cells augmented IL-12 and IL-1β secretion in infected cells. In summary, these findings demonstrate that modulation of MTs affects several crucial steps of B. abortus pathogenesis, including BCV maturation, intracellular survival and IL-12 secretion in infected macrophages.
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Affiliation(s)
- Juliana Alves-Silva
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Isabela P Tavares
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Erika S Guimarães
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Miriam M Costa Franco
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Barbara C Figueiredo
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - João T Marques
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Gary Splitter
- Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, WI, United States
| | - Sergio C Oliveira
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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21
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Lourenço-de-Oliveira R, Marques JT, Sreenu VB, Atyame Nten C, Aguiar ERGR, Varjak M, Kohl A, Failloux AB. Culex quinquefasciatus mosquitoes do not support replication of Zika virus. J Gen Virol 2017; 99:258-264. [PMID: 29076805 DOI: 10.1099/jgv.0.000949] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The rapid spread of Zika virus (ZIKV) in the Americas raised many questions about the role of Culex quinquefasciatus mosquitoes in transmission, in addition to the key role played by the vector Aedes aegypti. Here we analysed the competence of Cx. quinquefasciatus (with or without Wolbachia endosymbionts) for a ZIKV isolate. We also examined the induction of RNA interference pathways after viral challenge and the production of small virus-derived RNAs. We did not observe any infection nor such small virus-derived RNAs, regardless of the presence or absence of Wolbachia. Thus, Cx. quinquefasciatus does not support ZIKV replication and Wolbachia is not involved in producing this phenotype. In short, these mosquitoes are very unlikely to play a role in transmission of ZIKV.
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Affiliation(s)
- Ricardo Lourenço-de-Oliveira
- Department of Virology, Arboviruses and Insect Vectors, Institut Pasteur, Paris, France
- Instituto Oswaldo Cruz, Rio de Janeiro, Brazil
| | - João T Marques
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha-Belo Horizonte-MG, CEP 31270-901, Brazil
| | - Vattipally B Sreenu
- MRC-University of Glasgow Centre for Virus Research, Glasgow G61 1QH, Scotland, UK
| | - Célestine Atyame Nten
- Department of Virology, Arboviruses and Insect Vectors, Institut Pasteur, Paris, France
- Present address: University of Reunion Island, UMR PIMIT (Processus Infectieux en Milieu Insulaire Tropical), CNRS 9192, INSERM U1187, IRD 249, Sainte-Clotilde, Reunion Island, France
| | - Eric Roberto Guimarães Rocha Aguiar
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha-Belo Horizonte-MG, CEP 31270-901, Brazil
| | - Margus Varjak
- MRC-University of Glasgow Centre for Virus Research, Glasgow G61 1QH, Scotland, UK
| | - Alain Kohl
- MRC-University of Glasgow Centre for Virus Research, Glasgow G61 1QH, Scotland, UK
| | - Anna-Bella Failloux
- Department of Virology, Arboviruses and Insect Vectors, Institut Pasteur, Paris, France
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22
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Marques JT, Imler JL. The diversity of insect antiviral immunity: insights from viruses. Curr Opin Microbiol 2016; 32:71-76. [PMID: 27232381 DOI: 10.1016/j.mib.2016.05.002] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 05/03/2016] [Indexed: 11/30/2022]
Abstract
Insects represent over 70% of all animal species. Recent virome analyses reveal unprecedented genetic diversity of insect viruses, which appears to match that of their hosts. Thus, insect-virus interactions may provide information on a vast repertoire of antiviral immune mechanisms. Tapping into this diversity is challenging because of several constraints imposed by the uniqueness of each insect model. Nevertheless, it is clear that many conserved and divergent pathways participate in the control of viral infection in insects. Co-evolution between hosts and viruses favors the development of immune evasion mechanisms by the pathogen. Viral suppressors can offer unique perspective on host pathways and emphasize the importance of RNA interference, apoptosis, but also NF-κB pathways and translation control in insect antiviral immunity.
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Affiliation(s)
- João T Marques
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Belo Horizonte, CEP 31270-901, Brazil; CNRS UPR9022, IBMC, Strasbourg, France.
| | - Jean-Luc Imler
- CNRS UPR9022, IBMC, Strasbourg, France; Faculté des Sciences de la Vie, Université de Strasbourg, Strasbourg, France.
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23
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Campos RK, Boratto PV, Assis FL, Aguiar ERGR, Silva LCF, Albarnaz JD, Dornas FP, Trindade GS, Ferreira PP, Marques JT, Robert C, Raoult D, Kroon EG, La Scola B, Abrahão JS. Samba virus: a novel mimivirus from a giant rain forest, the Brazilian Amazon. Virol J 2014; 11:95. [PMID: 24886672 PMCID: PMC4113263 DOI: 10.1186/1743-422x-11-95] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 05/01/2014] [Indexed: 01/09/2023] Open
Abstract
Background The identification of novel giant viruses from the nucleocytoplasmic large DNA viruses group and their virophages has increased in the last decade and has helped to shed light on viral evolution. This study describe the discovery, isolation and characterization of Samba virus (SMBV), a novel giant virus belonging to the Mimivirus genus, which was isolated from the Negro River in the Brazilian Amazon. We also report the isolation of an SMBV-associated virophage named Rio Negro (RNV), which is the first Mimivirus virophage to be isolated in the Americas. Methods/results Based on a phylogenetic analysis, SMBV belongs to group A of the putative Megavirales order, possibly a new virus related to Acanthamoeba polyphaga mimivirus (APMV). SMBV is the largest virus isolated in Brazil, with an average particle diameter about 574 nm. The SMBV genome contains 938 ORFs, of which nine are ORFans. The 1,213.6 kb SMBV genome is one of the largest genome of any group A Mimivirus described to date. Electron microscopy showed RNV particle accumulation near SMBV and APMV factories resulting in the production of defective SMBV and APMV particles and decreasing the infectivity of these two viruses by several logs. Conclusion This discovery expands our knowledge of Mimiviridae evolution and ecology.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Bernard La Scola
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Laboratório de Vírus, Av, Antônio Carlos, 6627 Pampulha, Belo Horizonte, MG Zip Code 31270-901, Brazil.
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Trindade GS, da Fonseca FG, Marques JT, Diniz S, Leite JA, De Bodt S, Van der Peer Y, Bonjardim CA, Ferreira PCP, Kroon EG. Belo Horizonte virus: a vaccinia-like virus lacking the A-type inclusion body gene isolated from infected mice. J Gen Virol 2004; 85:2015-2021. [PMID: 15218187 DOI: 10.1099/vir.0.79840-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Here is described the isolation of a naturally occurring A-type inclusion body (ATI)-negative vaccinia-like virus, Belo Horizonte virus (VBH), obtained from a mousepox-like outbreak in Brazil. The isolated virus was identified and characterized as an orthopoxvirus by conventional methods. Molecular characterization of the virus was done by DNA cross-hybridization using Vaccinia virus (VACV) DNA. In addition, conserved orthopoxvirus genes such as vaccinia growth factor, thymidine kinase and haemagglutinin were amplified by PCR and sequenced. All sequences presented high similarity to VACV genes. Based on the sequences, phenograms were constructed for comparison with other poxviruses; VBH clustered consistently with VACV strains. Attempts to amplify the ATI gene (ati) by PCR, currently used to identify orthopoxviruses, were unsuccessful. Results presented here suggest that most of the ati gene is deleted in the VBH genome.
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Affiliation(s)
- Giliane S Trindade
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos 6627, Caixa postal 486, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Flávio G da Fonseca
- Laboratório de Imunologia Celular e Molecular, Centro de Pesquisas René Rachou - FIOCRUZ, Avenida Augusto de Lima 1715, CEP 30190-002, Belo Horizonte, MG, Brazil
| | - João T Marques
- Department of Cancer Biology, The Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, OH 44195, USA
| | - Sueli Diniz
- Laboratório de Biologia de Microrganismos, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos 6627, Caixa postal 486, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Juliana A Leite
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos 6627, Caixa postal 486, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Stefanie De Bodt
- Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology (VIB), Ghent University, Technologiepark 927, B-9052 Ghent, Belgium
| | - Yves Van der Peer
- Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology (VIB), Ghent University, Technologiepark 927, B-9052 Ghent, Belgium
| | - Cláudio A Bonjardim
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos 6627, Caixa postal 486, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Paulo C P Ferreira
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos 6627, Caixa postal 486, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Erna G Kroon
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos 6627, Caixa postal 486, CEP 31270-901, Belo Horizonte, MG, Brazil
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Marques JT, Trindade GD, Da Fonseca FG, Dos Santos JR, Bonjardim CA, Ferreira PC, Kroon EG. Characterization of ATI, TK and IFN-alpha/betaR genes in the genome of the BeAn 58058 virus, a naturally attenuated wild Orthopoxvirus. Virus Genes 2001; 23:291-301. [PMID: 11778697 DOI: 10.1023/a:1012521322845] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The lack of knowledge about the natural host of Vaccinia virus (VV) along with the description of human infections caused by poxviruses after smallpox eradication has increased the need to characterize poxviruses isolated from the wild. Moreover, in the past years poxviruses have been widely studied as potential vaccination tools, with the discovery of several genes implicated in the evasion of the host immune response involved in virus pathogenesis. Among them, an Interferon (IFN)-binding protein was identified in the supernatant of VV strain WR infected cells coded by the B18R gene. It was shown that many other Orthopoxviruses also encode and express this soluble receptor although some VV strains such as Lister and modified Ankara, which were less reactogenic vaccines, do not. The BeAn 58058 virus (BAV) has been recently characterized and proposed to be an Orthopoxvirus. BAV was also shown to be less virulent in animal models than VV Lister. Here we report the identification of an IFN-alpha/betaR gene in the BAV genome with 99% of sequence identity with the VVWR B18R gene. The identified gene encodes a B18R-like IFN binding protein as demonstrated by its capacity to inhibit the IFN-mediated protection of VERO cells against EMC virus. In order to better characterize the virus we have searched for the A type inclusion body (ATI) gene currently used in the classification of Orthopoxviruses but did not detect it in the BAV genome. We have also sequenced the BAV thymidine kinase (TK) gene, a poxvirus-conserved gene, which, as expected, showed high homology with the TK gene of other poxviruses. Phylogenetic trees were constructed based on sequences of the IFN-alpha/betaR and TK genes from several poxviruses and in both cases BAV was placed in the same cluster as other VV strains. These observations strengthened the hypothesis that this virus is a variant of the VV vaccine used in Brazil. However the explanation for the BAV lack of virulence remains to be discovered.
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Affiliation(s)
- J T Marques
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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da Fonseca FG, Silva RL, Marques JT, Ferreira PC, Kroon EG. The genome of cowpox virus contains a gene related to those encoding the epidermal growth factor, transforming growth factor alpha and vaccinia growth factor. Virus Genes 1999; 18:151-60. [PMID: 10403701 DOI: 10.1023/a:1008072720217] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Cowpox virus (CPV) is a member of the Orthopoxvirus genus and has the genetic capacity to encode a multitude of genes that interfere with the host inflammatory and immune response or modulate the physiological state of infected and non-infected cells. Among these CPV factors are receptors homologous to interferon and tumor necrosis factor receptors and also a viral cellular serine-proteinase analog. Here we describe the detection of a CPV gene that encodes a protein homologous to epidermal growth factor, transforming growth factor alpha and poxvirus growth factors, such as the vaccinia growth factor (VGF). The VGF and other poxvirus growth factors are produced early in the infection and are secreted into the medium where they bind to the EGF receptors, generating mytotic responses. The cowpox growth factor (CGF) gene was detected in three copies on the virus genome by PCR, and by northern and southern blot hybridization using VGF nucleotide sequences as primers and probes. The CPV gene has a strong nucleotide and predicted amino acid similarity with VGF, and is also produced early in the infection.
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Affiliation(s)
- F G da Fonseca
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
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