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Begum R, Paul SK, Aung MS, Haque N, Ahmed S, Islam A, Nila SS, Roy S, Jahan A, Sathi FA, Al Mamun A, Biswas JP, Kobayashi N. Predominance of Dengue virus type 2-genotype II (Cosmopolitan) in Bangladesh, 2023: Presumptive sudden replacement of a prevailing virus strain. New Microbes New Infect 2024; 60-61:101431. [PMID: 38818244 PMCID: PMC11137503 DOI: 10.1016/j.nmni.2024.101431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Accepted: 05/14/2024] [Indexed: 06/01/2024] Open
Affiliation(s)
- Rahima Begum
- Department of Microbiology, Mymensingh Medical College, Mymensingh, 2200, Bangladesh
| | | | - Meiji Soe Aung
- Department of Hygiene, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Nazia Haque
- Department of Microbiology, Mymensingh Medical College, Mymensingh, 2200, Bangladesh
| | - Salma Ahmed
- Department of Microbiology, Mugda Medical College, Dhaka, Bangladesh
| | - Arup Islam
- Department of Microbiology, Mymensingh Medical College, Mymensingh, 2200, Bangladesh
| | - Sultana Shabnam Nila
- Department of Microbiology, Mymensingh Medical College, Mymensingh, 2200, Bangladesh
| | - Sangjukta Roy
- Department of Microbiology, Mymensingh Medical College, Mymensingh, 2200, Bangladesh
| | - Afsana Jahan
- Department of Microbiology, Pabna Medical College, Pabna, 6602, Bangladesh
| | - Fardousi Akter Sathi
- Department of Microbiology, Mymensingh Medical College, Mymensingh, 2200, Bangladesh
| | - Abdullah Al Mamun
- Department of Microbiology, Mymensingh Medical College, Mymensingh, 2200, Bangladesh
| | - Joy Prokas Biswas
- Department of Pathology, Netrokona Medical College, Netrokona, 2400, Bangladesh
| | - Nobumichi Kobayashi
- Department of Hygiene, Sapporo Medical University School of Medicine, Sapporo, Japan
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Prajapati S, Ngono AE, Cauley MM, Timis J, Shrestha S, Bastola A, Mandal SK, Yadav SR, Napit R, Moi ML, Yamabhai M, Sessions OM, Shresta S, Manandhar KD. Genomic sequencing and neutralizing serological profiles during acute dengue infection: A 2017 cohort study in Nepal. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.03.597174. [PMID: 38895290 PMCID: PMC11185687 DOI: 10.1101/2024.06.03.597174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Dengue virus (DENV) is a mosquito-borne flavivirus that poses a threat to nearly 50% of the global population. DENV has been endemic in Nepal since 2006; however, little is known about how DENV is evolving or the prevalence of anti-DENV immunity within the Nepalese population. To begin to address these gaps, we performed a serologic and genetic study of 49 patients from across Nepal who presented at central hospitals during the 2017 dengue season with suspected DENV infection. Of the 49 subjects assessed, 21 (43%) were positive for DENV NS1 antigen; of these; 5 were also anti-DENV IgM + IgG + ; 7 were DENV IgM + IgG - , 2 were IgM - IgG + , and 7 were IgM - IgG - by specific ELISAs. Seven of the 21 NS1+ sera were RNA+ by RT-PCR (six DENV2, one DENV3), suggesting that DENV2 was the dominant serotype in our cohort. Whole-genome sequencing of two DENV2 isolates showed similarity with strains circulating in Singapore in 2016, and the envelope genes were also similar to strains circulating in India in 2017. DENV-neutralizing antibodies (nAbs) were present in 31 of 47 sera tested (66%); among these, 20, 24, 26, and 12 sera contained nAbs against DENV1, 2, 3, and 4 serotypes, respectively. Serology analysis suggested that 12 (26%) and 19 (40%) of the 49 subjects were experiencing primary and secondary DENV infections, respectively. Collectively, our results provide evidence for current and/or past exposure to multiple DENV serotypes in our cohort, and the RNA analyses further indicate that DENV2 was the likely dominant serotype circulating in Nepal in 2017. These data suggest that expanded local surveillance of circulating DENV genotypes and population immunity will be important to effectively manage and mitigate future dengue outbreaks in Nepal.
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3
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Penteado AB, de Oliveira Ribeiro G, Lima Araújo EL, Kato RB, de Melo Freire CC, de Araújo JMG, da Luz Wallau G, Salvato RS, de Jesus R, Bosco GG, Franz HF, da Silva PEA, de Souza Leal E, Goulart Trossini GH, de Lima Neto DF. Binding Evolution of the Dengue Virus Envelope Against DC-SIGN: A Combined Approach of Phylogenetics and Molecular Dynamics Analyses Over 30 Years of Dengue Virus in Brazil. J Mol Biol 2024; 436:168577. [PMID: 38642883 DOI: 10.1016/j.jmb.2024.168577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 04/22/2024]
Abstract
The Red Queen Hypothesis (RQH), derived from Lewis Carroll's "Through the Looking-Glass", postulates that organisms must continually adapt in response to each other to maintain relative fitness. Within the context of host-pathogen interactions, the RQH implies an evolutionary arms race, wherein viruses evolve to exploit hosts and hosts evolve to resist viral invasion. This study delves into the dynamics of the RQH in the context of virus-cell interactions, specifically focusing on virus receptors and cell receptors. We observed multiple virus-host systems and noted patterns of co-evolution. As viruses evolved receptor-binding proteins to effectively engage with cell receptors, cells countered by altering their receptor genes. This ongoing mutual adaptation cycle has influenced the molecular intricacies of receptor-ligand interactions. Our data supports the RQH as a driving force behind the diversification and specialization of both viral and host cell receptors. Understanding this co-evolutionary dance offers insights into the unpredictability of emerging viral diseases and potential therapeutic interventions. Future research is crucial to dissect the nuanced molecular changes and the broader ecological consequences of this ever-evolving battle. Here, we combine phylogenetic inferences, structural modeling, and molecular dynamics analyses to describe the epidemiological characteristics of major Brazilian DENV strains that circulated from 1990 to 2022 from a combined perspective, thus providing us with a more detailed picture on the dynamics of such interactions over time.
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MESH Headings
- Dengue Virus/genetics
- Dengue Virus/metabolism
- Receptors, Cell Surface/metabolism
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/chemistry
- Phylogeny
- Molecular Dynamics Simulation
- Humans
- Cell Adhesion Molecules/metabolism
- Cell Adhesion Molecules/genetics
- Cell Adhesion Molecules/chemistry
- Brazil
- Lectins, C-Type/metabolism
- Lectins, C-Type/genetics
- Lectins, C-Type/chemistry
- Evolution, Molecular
- Dengue/virology
- Host-Pathogen Interactions/genetics
- Protein Binding
- Viral Envelope/metabolism
- Receptors, Virus/metabolism
- Receptors, Virus/chemistry
- Receptors, Virus/genetics
- Viral Envelope Proteins/genetics
- Viral Envelope Proteins/metabolism
- Viral Envelope Proteins/chemistry
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Affiliation(s)
- André Berndt Penteado
- School of Pharmaceutical Sciences, University of São Paulo, Department of Pharmacy, Av. Prof. Lineu Prestes, 580, Cidade Universitária, São Paulo, SP 05508-000, Brazil
| | - Geovani de Oliveira Ribeiro
- General-Coordination of Public Health Laboratories, Department of Strategic Coordination and Surveillance in Health and the Environment, Ministry of Health, Brasilia, Brazil; Department of Cellular Biology, University of Brasilia (UNB), Brasilia, Distrito Federal, Brazil
| | - Emerson Luiz Lima Araújo
- General Coordination of Attention to Communicable Diseases in Primary Care of the Department of Comprehensive Care Management of the Secretariat of Primary Health Care of the Ministry of Health (CDTAP/DGCI/SAPS-MS), Brazil
| | - Rodrigo Bentes Kato
- General-Coordination of Public Health Laboratories, Department of Strategic Coordination and Surveillance in Health and the Environment, Ministry of Health, Brasilia, Brazil
| | - Caio Cesar de Melo Freire
- Department of Genetics and Evolution, Centre of Biological and Health Sciences, Federal University of Sao Carlos, PO Box 676, Washington Luis Road, km 235, São Carlos, SP 13565-905, Brazil
| | - Joselio Maria Galvão de Araújo
- Federal University of Rio Grande do Norte, Biosciences Center, Department of Microbiology and Parasitology, Campus Universitário, S/N Lagoa Nova 59078900, Natal, RN, Brazil
| | - Gabriel da Luz Wallau
- Department of Entomology and Bioinformatics Center of the Aggeu Magalhães Institute - FIOCRUZ - IAM, Brazil
| | - Richard Steiner Salvato
- Center for Scientific and Technological Development, State Center for Health Surveillance of Rio Grande do Sul, State Department of Health of Rio Grande do Sul, Porto Alegre, Brazil
| | - Ronaldo de Jesus
- General-Coordination of Public Health Laboratories, Department of Strategic Coordination and Surveillance in Health and the Environment, Ministry of Health, Brasilia, Brazil
| | - Geraldine Goés Bosco
- University of São Paulo, Faculty of Philosophy Sciences and Letters of Ribeirão Preto. Av. Bandeirantes, 3900 Ribeirão Preto, SP, Brazil
| | - Helena Ferreira Franz
- General-Coordination of Public Health Laboratories, Department of Strategic Coordination and Surveillance in Health and the Environment, Ministry of Health, Brasilia, Brazil
| | - Pedro Eduardo Almeida da Silva
- General-Coordination of Public Health Laboratories, Department of Strategic Coordination and Surveillance in Health and the Environment, Ministry of Health, Brasilia, Brazil
| | - Elcio de Souza Leal
- Federal University of Pará, Faculty of Biotechnology, Institute of Biological Sciences, Rua Augusto Corrêa, Guamá, 04039-032 Belem, PA, Brazil
| | - Gustavo Henrique Goulart Trossini
- School of Pharmaceutical Sciences, University of São Paulo, Department of Pharmacy, Av. Prof. Lineu Prestes, 580, Cidade Universitária, São Paulo, SP 05508-000, Brazil
| | - Daniel Ferreira de Lima Neto
- School of Pharmaceutical Sciences, University of São Paulo, Department of Pharmacy, Av. Prof. Lineu Prestes, 580, Cidade Universitária, São Paulo, SP 05508-000, Brazil.
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4
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Ribeiro JR, Roca TP, Cartonilho GDS, Passos-Silva AM, Moreira HM, Teixeira KS, da Silva ALF, Lugtenburg CAB, dos Santos AO, Villalobos Salcedo JM, do Nascimento VA, de Souza VC, Roque RA, Krieger MA, Naveca FG, Rampazzo RDCP, Vieira DS. DENV-2 Outbreak Associated With Cosmopolitan Genotype Emergence in Western Brazilian Amazon. Bioinform Biol Insights 2024; 18:11779322241251581. [PMID: 38737722 PMCID: PMC11088811 DOI: 10.1177/11779322241251581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 04/14/2024] [Indexed: 05/14/2024] Open
Abstract
Background Dengue virus (DENV) causes an important disease and directly affects public health, being the arbovirus that presents the highest number of infections and deaths in the Western Brazilian Amazon. This virus is divided into 4 serotypes that have already circulated in the region. Methodology Molecular characterization of a cohort containing 841 samples collected from febrile patients between 2021 and 2023 was analyzed using a commercial kit to detect the main arboviruses circulating in Brazil: Zika, DENV-1, DENV-2, DENV-3, DENV-4 and, Chikungunya. Subsequently, Sanger sequencing was performed for positive samples. Results The cohort detected 162 positive samples, 12 for DENV-1 and 150 identified as DENV-2, indicating co-circulation of serotypes. The samples were subjected to sequencing and the analysis of the sequences that obtained good quality revealed that 5 samples belonged to the V genotype of DENV-1 and 46 were characterized as DENV-2 Cosmopolitan genotype-lineage 5. Conclusion The results allowed us to identify for the first time the Cosmopolitan genotype in Rondônia, Brazilian Western Amazon, and its fast spread dispersion.
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Affiliation(s)
- Jessiane Rodrigues Ribeiro
- Laboratório de Virologia Molecular, Fundação Oswaldo Cruz Rondônia—Fiocruz Rondônia (FIOCRUZ/RO), Porto Velho, Brazil
- Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental—INCT-EpiAmO, Porto Velho, Brazil
| | - Tárcio Peixoto Roca
- Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental—INCT-EpiAmO, Porto Velho, Brazil
- Programa de Pós-Graduação em Medicina Tropical, Instituto Oswaldo Cruz/IOC, FIOCRUZ, Rio de Janeiro, Brazil
| | - Gleense dos Santos Cartonilho
- Laboratório de Virologia Molecular, Fundação Oswaldo Cruz Rondônia—Fiocruz Rondônia (FIOCRUZ/RO), Porto Velho, Brazil
- Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental—INCT-EpiAmO, Porto Velho, Brazil
- Programa de Pós-Graduação em Biologia Experimental, Universidade Federal de Rondônia—UNIR/FIOCRUZ/RO, Porto Velho, Brazil
| | - Ana Maísa Passos-Silva
- Laboratório de Virologia Molecular, Fundação Oswaldo Cruz Rondônia—Fiocruz Rondônia (FIOCRUZ/RO), Porto Velho, Brazil
- Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental—INCT-EpiAmO, Porto Velho, Brazil
- Programa de Pós-Graduação em Biologia Experimental, Universidade Federal de Rondônia—UNIR/FIOCRUZ/RO, Porto Velho, Brazil
| | - Hillquias Monteiro Moreira
- Laboratório de Virologia Molecular, Fundação Oswaldo Cruz Rondônia—Fiocruz Rondônia (FIOCRUZ/RO), Porto Velho, Brazil
- Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental—INCT-EpiAmO, Porto Velho, Brazil
- Programa de Pós-Graduação em Biologia Experimental, Universidade Federal de Rondônia—UNIR/FIOCRUZ/RO, Porto Velho, Brazil
| | - Karolaine Santos Teixeira
- Laboratório de Virologia Molecular, Fundação Oswaldo Cruz Rondônia—Fiocruz Rondônia (FIOCRUZ/RO), Porto Velho, Brazil
- Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental—INCT-EpiAmO, Porto Velho, Brazil
| | - André Luiz Ferreira da Silva
- Laboratório de Virologia Molecular, Fundação Oswaldo Cruz Rondônia—Fiocruz Rondônia (FIOCRUZ/RO), Porto Velho, Brazil
- Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental—INCT-EpiAmO, Porto Velho, Brazil
- Programa de Pós-Graduação em Biologia Experimental, Universidade Federal de Rondônia—UNIR/FIOCRUZ/RO, Porto Velho, Brazil
| | | | | | | | | | - Victor Costa de Souza
- Instituto Leônidas & Maria Deane—Fundação Oswaldo Cruz do Amazonas, ILMD, Manaus, Brazil
| | | | | | - Felipe Gomes Naveca
- Instituto Leônidas & Maria Deane—Fundação Oswaldo Cruz do Amazonas, ILMD, Manaus, Brazil
| | | | - Deusilene Souza Vieira
- Laboratório de Virologia Molecular, Fundação Oswaldo Cruz Rondônia—Fiocruz Rondônia (FIOCRUZ/RO), Porto Velho, Brazil
- Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental—INCT-EpiAmO, Porto Velho, Brazil
- Programa de Pós-Graduação em Biologia Experimental, Universidade Federal de Rondônia—UNIR/FIOCRUZ/RO, Porto Velho, Brazil
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Chawla YM, Bajpai P, Saini K, Reddy ES, Patel AK, Murali-Krishna K, Chandele A. Regional Variation of the CD4 and CD8 T Cell Epitopes Conserved in Circulating Dengue Viruses and Shared with Potential Vaccine Candidates. Viruses 2024; 16:730. [PMID: 38793612 PMCID: PMC11126086 DOI: 10.3390/v16050730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/03/2024] [Accepted: 04/11/2024] [Indexed: 05/26/2024] Open
Abstract
As dengue expands globally and many vaccines are under trials, there is a growing recognition of the need for assessing T cell immunity in addition to assessing the functions of neutralizing antibodies during these endeavors. While several dengue-specific experimentally validated T cell epitopes are known, less is understood about which of these epitopes are conserved among circulating dengue viruses and also shared by potential vaccine candidates. As India emerges as the epicenter of the dengue disease burden and vaccine trials commence in this region, we have here aligned known dengue specific T cell epitopes, reported from other parts of the world with published polyprotein sequences of 107 dengue virus isolates available from India. Of the 1305 CD4 and 584 CD8 epitopes, we found that 24% and 41%, respectively, were conserved universally, whereas 27% and 13% were absent in any viral isolates. With these data, we catalogued epitopes conserved in circulating dengue viruses from India and matched them with each of the six vaccine candidates under consideration (TV003, TDEN, DPIV, CYD-TDV, DENVax and TVDV). Similar analyses with viruses from Thailand, Brazil and Mexico revealed regional overlaps and variations in these patterns. Thus, our study provides detailed and nuanced insights into regional variation that should be considered for itemization of T cell responses during dengue natural infection and vaccine design, testing and evaluation.
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Affiliation(s)
- Yadya M. Chawla
- ICGEB-Emory Vaccine Center, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India; (Y.M.C.); (P.B.); (K.S.); (E.S.R.)
| | - Prashant Bajpai
- ICGEB-Emory Vaccine Center, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India; (Y.M.C.); (P.B.); (K.S.); (E.S.R.)
| | - Keshav Saini
- ICGEB-Emory Vaccine Center, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India; (Y.M.C.); (P.B.); (K.S.); (E.S.R.)
| | - Elluri Seetharami Reddy
- ICGEB-Emory Vaccine Center, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India; (Y.M.C.); (P.B.); (K.S.); (E.S.R.)
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi 110016, India;
| | - Ashok Kumar Patel
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi 110016, India;
| | - Kaja Murali-Krishna
- ICGEB-Emory Vaccine Center, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India; (Y.M.C.); (P.B.); (K.S.); (E.S.R.)
- Department of Pediatrics, Emory University School of Medicine, Emory University, Atlanta, GA 30322, USA
- Emory Vaccine Center, Emory University, Atlanta, GA 30317, USA
| | - Anmol Chandele
- ICGEB-Emory Vaccine Center, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India; (Y.M.C.); (P.B.); (K.S.); (E.S.R.)
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6
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Malavige GN, Ogg GS. Molecular mechanisms in the pathogenesis of dengue infections. Trends Mol Med 2024; 30:484-498. [PMID: 38582622 DOI: 10.1016/j.molmed.2024.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 03/12/2024] [Accepted: 03/13/2024] [Indexed: 04/08/2024]
Abstract
Dengue is the most rapidly emerging climate-sensitive infection, and morbidity/mortality and disease incidence are rising markedly, leading to healthcare systems being overwhelmed. There are currently no specific treatments for dengue or prognostic markers to identify those who will progress to severe disease. Owing to an increase in the burden of illness and a change in epidemiology, many patients experience severe disease. Our limited understanding of the complex mechanisms of disease pathogenesis has significantly hampered the development of safe and effective treatments, vaccines, and biomarkers. We discuss the molecular mechanisms of dengue pathogenesis, the gaps in our knowledge, and recent advances, as well as the most crucial questions to be answered to enable the development of therapeutics, biomarkers, and vaccines.
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Affiliation(s)
- Gathsaurie Neelika Malavige
- Allergy Immunology and Cell Biology Unit, Department of Immunology and Molecular Medicine, Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka; Medical Research Council (MRC) Translational Immune Discovery Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK.
| | - Graham S Ogg
- Allergy Immunology and Cell Biology Unit, Department of Immunology and Molecular Medicine, Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka; Medical Research Council (MRC) Translational Immune Discovery Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
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7
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Amorim MT, Naveca FG, Hernández LHA, da Paz TYB, da Silva de Oliveira CC, da Conceição Miranda Santos A, Queiroz ALN, Wanzeller ALM, da Silva EVP, da Silva FS, da Silva SP, Nunes BTD, Cruz ACR. Detection of a Multiple Circulation Event of Dengue Virus 2 Strains in the Northern Region of Brazil. Trop Med Infect Dis 2024; 9:17. [PMID: 38251214 PMCID: PMC10818346 DOI: 10.3390/tropicalmed9010017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/10/2023] [Accepted: 12/27/2023] [Indexed: 01/23/2024] Open
Abstract
Dengue virus serotype 2 (DENV-2) is responsible for dengue epidemics on a global scale and is associated with severe cases of the disease. This study conducted a phylogenetic investigation of DENV-2 isolates from 2017 to 2021 originating from the northern states of Brazil. A total of 32 samples from DENV-2 isolates were analyzed, including 12 from Acre, 19 from Roraima, and one from Tocantins. Only one lineage of the Asian-American genotype and one lineage of the cosmopolitan genotype were observed: Lineage 1, Asian-American genotype (connection to Puerto Rico); Lineage 5, cosmopolitan genotype (connection to Peru). Our results provide important data regarding the study of DENV genotypes and lineage distribution and open up possibilities for probable introduction and dissemination routes.
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Affiliation(s)
- Murilo Tavares Amorim
- Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, Brazil;
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil; (L.H.A.H.); (A.d.C.M.S.); (A.L.N.Q.); (A.L.M.W.); (E.V.P.d.S.); (S.P.d.S.); (B.T.D.N.)
| | - Felipe Gomes Naveca
- Laboratory of Infectious Diseases Ecology in Amazon, Leonidas and Maria Deane Institute, Fiocruz, Manaus 69057-070, Brazil;
- Arbovirus and Hemorrhagic Virus Laboratory, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro 21040-900, Brazil
| | - Leonardo Henrique Almeida Hernández
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil; (L.H.A.H.); (A.d.C.M.S.); (A.L.N.Q.); (A.L.M.W.); (E.V.P.d.S.); (S.P.d.S.); (B.T.D.N.)
| | - Thito Yan Bezerra da Paz
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil; (L.H.A.H.); (A.d.C.M.S.); (A.L.N.Q.); (A.L.M.W.); (E.V.P.d.S.); (S.P.d.S.); (B.T.D.N.)
| | | | - Alessandra da Conceição Miranda Santos
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil; (L.H.A.H.); (A.d.C.M.S.); (A.L.N.Q.); (A.L.M.W.); (E.V.P.d.S.); (S.P.d.S.); (B.T.D.N.)
| | - Alice Louize Nunes Queiroz
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil; (L.H.A.H.); (A.d.C.M.S.); (A.L.N.Q.); (A.L.M.W.); (E.V.P.d.S.); (S.P.d.S.); (B.T.D.N.)
| | - Ana Lucia Monteiro Wanzeller
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil; (L.H.A.H.); (A.d.C.M.S.); (A.L.N.Q.); (A.L.M.W.); (E.V.P.d.S.); (S.P.d.S.); (B.T.D.N.)
| | - Eliana Vieira Pinto da Silva
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil; (L.H.A.H.); (A.d.C.M.S.); (A.L.N.Q.); (A.L.M.W.); (E.V.P.d.S.); (S.P.d.S.); (B.T.D.N.)
| | - Fábio Silva da Silva
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil; (L.H.A.H.); (A.d.C.M.S.); (A.L.N.Q.); (A.L.M.W.); (E.V.P.d.S.); (S.P.d.S.); (B.T.D.N.)
| | - Sandro Patroca da Silva
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil; (L.H.A.H.); (A.d.C.M.S.); (A.L.N.Q.); (A.L.M.W.); (E.V.P.d.S.); (S.P.d.S.); (B.T.D.N.)
| | - Bruno Tardelli Diniz Nunes
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil; (L.H.A.H.); (A.d.C.M.S.); (A.L.N.Q.); (A.L.M.W.); (E.V.P.d.S.); (S.P.d.S.); (B.T.D.N.)
| | - Ana Cecília Ribeiro Cruz
- Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, Brazil;
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil; (L.H.A.H.); (A.d.C.M.S.); (A.L.N.Q.); (A.L.M.W.); (E.V.P.d.S.); (S.P.d.S.); (B.T.D.N.)
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8
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Martínez D, Gómez M, Hernández C, Muñoz M, Campo-Palacio S, González-Robayo M, Montilla M, Pavas-Escobar N, Ramírez JD. Emergence of Dengue Virus Serotype 2 Cosmopolitan Genotype, Colombia. Emerg Infect Dis 2024; 30:189-192. [PMID: 38086397 PMCID: PMC10756373 DOI: 10.3201/eid3001.230972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023] Open
Abstract
Using Oxford Nanopore technologies and phylogenetic analyses, we sequenced and identified the cosmopolitan genotype of dengue virus serotype 2 isolated from 2 patients in the city of Villavicencio, Meta department, Colombia. This identification suggests the emergence of this genotype in the country, which warrants further surveillance to identify its epidemic potential.
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9
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Ciuoderis KA, Usuga J, Moreno I, Perez-Restrepo LS, Flórez DY, Cardona A, Cloherty GA, Berg MG, Hernandez-Ortiz JP, Osorio JE. Characterization of Dengue Virus Serotype 2 Cosmopolitan Genotype Circulating in Colombia. Am J Trop Med Hyg 2023; 109:1298-1302. [PMID: 37972339 DOI: 10.4269/ajtmh.23-0375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/22/2023] [Indexed: 11/19/2023] Open
Abstract
Dengue virus (DENV) is the etiological agent of dengue fever (DF), which is among the most prevalent vector-borne diseases in the tropics. In 2022, the Colombian health surveillance system reported more than 69,000 cases of DF. As part of a hospital-based fever surveillance study, acute-phase sera were collected from 4,545 patients with suspected dengue between 2020 and 2023 in three municipalities of Colombia. Combined reverse transcription-polymerase chain reaction and antigen rapid testing confirmed that 376 patients (8.3%) had DF. The virus was isolated in cell culture from 166 of these patients (44.1%), and genome sequencing was performed successfully on 122 (73.5%). Three DENV serotypes (1, 2, and 3) were identified. Phylogenetic analyses of the DENV-2 sequences revealed that 42 of 50 of the isolates (84%) belonged to the DENV-2 cosmopolitan genotype lineage, clustering with sequences from Asia, Peru, and Brazil. We report the detection, isolation, and whole-genome sequencing (11 Kb) of the DENV-2 cosmopolitan genotype and its recent introduction to Colombia.
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Affiliation(s)
- Karl A Ciuoderis
- GHI One Health Colombia, Universidad Nacional de Colombia, Medellín, Colombia
| | - Jaime Usuga
- GHI One Health Colombia, Universidad Nacional de Colombia, Medellín, Colombia
| | - Isabel Moreno
- GHI One Health Colombia, Universidad Nacional de Colombia, Medellín, Colombia
| | | | - Diana Y Flórez
- GHI One Health Colombia, Universidad Nacional de Colombia, Medellín, Colombia
| | - Andres Cardona
- GHI One Health Colombia, Universidad Nacional de Colombia, Medellín, Colombia
| | - Gavin A Cloherty
- Infectious Diseases Research, Abbott Diagnostics, Abbott Park, Illinois
| | - Michael G Berg
- Infectious Diseases Research, Abbott Diagnostics, Abbott Park, Illinois
| | - Juan P Hernandez-Ortiz
- GHI One Health Colombia, Universidad Nacional de Colombia, Medellín, Colombia
- Department of Materials and Nanotechnology, Universidad Nacional de Colombia, Medellín, Colombia
| | - Jorge E Osorio
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, Wisconsin
- Global Health Institute, University of Wisconsin, Madison, Wisconsin
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10
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Zhu DR, Rajesh AJ, Meganck RM, Young EF, Munt JE, Tse VL, Yount B, Conrad H, White L, Henein S, DeSilva AM, Baric RS. Dengue virus 4/2 envelope domain chimeric virus panel maps type-specific responses against dengue serotype 2. mBio 2023; 14:e0081823. [PMID: 37800919 PMCID: PMC10653845 DOI: 10.1128/mbio.00818-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 08/22/2023] [Indexed: 10/07/2023] Open
Abstract
IMPORTANCE The four dengue virus (DENV) serotypes infect several hundred million people each year. Although primary infection is generally mild, subsequent infection by differing serotypes increases the risk for symptomatic disease ranging from fever to life-threatening shock. Despite the availability of licensed vaccines, a comprehensive understanding of antibodies that target the viral envelope protein and protect from infection remains incomplete. In this manuscript, we develop a panel of recombinant viruses that graft each envelope domain of DENV2 onto the DENV4 envelope glycoprotein, revealing protein interactions important for virus viability. Furthermore, we map neutralizing antibody responses after primary DENV2 natural infection and a human challenge model to distinct domains on the viral envelope protein. The panel of recombinant viruses provides a new tool for dissecting the E domain-specific targeting of protective antibody responses, informing future DENV vaccine design.
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Affiliation(s)
- Deanna R. Zhu
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Alecia J. Rajesh
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Rita M. Meganck
- Department of Molecular Microbiology and Immunology, School of Medicine, Saint Louis University, St. Louis, Missouri, USA
| | - Ellen F. Young
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Jennifer E. Munt
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Victor L. Tse
- Department of Molecular Microbiology and Immunology, School of Medicine, Saint Louis University, St. Louis, Missouri, USA
| | - Boyd Yount
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Helen Conrad
- College of Science, Engineering and Food Science, University College Cork, Cork, Ireland
| | - Laura White
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Sandra Henein
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Aravinda M. DeSilva
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Ralph S. Baric
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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11
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Satapathy P, Goel K, Sharma V, Sarkar S, Kang M, Dhingra S, Bora I, Kaur K, Arora N, Aggarwal A, Ratho RK. Outbreak investigation of acute febrile illness from the Himalayan foothills: Solving the puzzle of fever. Front Pharmacol 2023; 14:1159377. [PMID: 37954851 PMCID: PMC10637397 DOI: 10.3389/fphar.2023.1159377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 03/30/2023] [Indexed: 11/14/2023] Open
Abstract
In September 2022, Panchkula Civil Hospital reported an outbreak of acute febrile illness (AFI) in Pinjore, located in the Himalayan foothills, Haryana, North India. There was an upsurge of fever cases. Blood samples were taken from suspected patients (n = 58) with AFI and subjected to serology of dengue, chikungunya, Japanese encephalitis, leptospira and scrub typhus. The samples were also screened for West Nile & Zika virus RNA using real-time PCR. Viral strains were characterized by sequencing. Of the 58 cases of AFI, Dengue could be identified in 45 (77.58%) followed by JE and Chikungunya in 2 cases each (3.44%), respectively. Among Dengue positive cases, 44 had monoinfection (97.77%) and 1 patient had dengue and JE. None were positive for Zika, West Nile, Scrub typhus, and Leptospira with the testing protocol. Four patients developed dengue with warning signs, such as abdominal pain in one patient and recurrent vomiting in the remaining three. The dengue serotype could be determined in 17 samples and revealed serotype 2. Molecular evolution analysis based on the complete envelope gene revealed that all DENV-2 strains (n = 13) circulated in the outbreak area belonged to the DENV-2 cosmopoliton genotype. In the early stages of infection, relying only on clinical manifestations is ineffective, so both molecular and serological assays along with clinical diagnosis are noteworthy for determining the aetiology of AFI.
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Affiliation(s)
- Prakasini Satapathy
- Department of Virology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Kapil Goel
- Department of Community Medicine & SPH, PGIMER, Chandigarh, India
| | - Vikrant Sharma
- Department of Virology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Subhabrata Sarkar
- Department of Virology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Mannat Kang
- Department of Virology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Shefali Dhingra
- Department of Virology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Ishani Bora
- Department of Virology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Kanwalpreet Kaur
- Department of Virology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | | | - Arun Aggarwal
- Department of Community Medicine & SPH, PGIMER, Chandigarh, India
| | - Radha Kanta Ratho
- Department of Virology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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12
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de Souza UJB, Macedo YDSM, dos Santos RN, Cardoso FDP, Galvão JD, Gabev EE, Franco AC, Roehe PM, Spilki FR, Campos FS. Circulation of Dengue Virus Serotype 1 Genotype V and Dengue Virus Serotype 2 Genotype III in Tocantins State, Northern Brazil, 2021-2022. Viruses 2023; 15:2136. [PMID: 38005815 PMCID: PMC10674946 DOI: 10.3390/v15112136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/20/2023] [Accepted: 10/21/2023] [Indexed: 11/26/2023] Open
Abstract
In Brazil, the state of Tocantins, located in north-central Brazil, has experienced a significant number of cases of arboviral disease, particularly Dengue virus (DENV). This study aimed to deepen the knowledge on DENV circulation within that state by conducting full genome sequencing of viral genomes recovered from 61 patients between June 2021 and July 2022. There were a total of 8807 and 20,692 cases in 2021 and 2022, respectively, as reported by the state's Secretary of Health. Nucleotide sequencing confirmed the circulation of DENV serotype 1, genotype V and DENV serotype 2, genotype III in the State. Younger age groups (4 to 43 years old) were mostly affected; however, no significant differences were detected regarding the gender distribution of cases in humans. Phylogenetic analysis revealed that the circulating viruses belong to DENV-1 genotype V American and DENV-2 genotype III Southeast Asian/American. The Bayesian analysis of DENV-1 genotype V genomes sequenced here are closely related to genomes previously sequenced in the state of São Paulo. Regarding the DENV-2 genotype III genomes, these clustered in a distinct, well-supported subclade, along with previously reported isolates from the states of Goiás and São Paulo. The findings reported here suggest that multiple introductions of these genotypes occurred in the Tocantins state. This observation highlights the importance of major population centers in Brazil on virus dispersion, such as those observed in other Latin American and North American countries. In the SNP analysis, DENV-1 displayed 122 distinct missense mutations, while DENV-2 had 44, with significant mutations predominantly occurring in the envelope and NS5 proteins. The analyses performed here highlight the concomitant circulation of distinct DENV-1 and -2 genotypes in some Brazilian states, underscoring the dynamic evolution of DENV and the relevance of surveillance efforts in supporting public health policies.
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Affiliation(s)
- Ueric José Borges de Souza
- Bioinformatics and Biotechnology Laboratory, Campus of Gurupi, Federal University of Tocantins, Gurupi 77410-570, Brazil; (Y.d.S.M.M.); (R.N.d.S.)
| | - Ygor da Silva Miranda Macedo
- Bioinformatics and Biotechnology Laboratory, Campus of Gurupi, Federal University of Tocantins, Gurupi 77410-570, Brazil; (Y.d.S.M.M.); (R.N.d.S.)
| | - Raíssa Nunes dos Santos
- Bioinformatics and Biotechnology Laboratory, Campus of Gurupi, Federal University of Tocantins, Gurupi 77410-570, Brazil; (Y.d.S.M.M.); (R.N.d.S.)
| | | | - Jucimária Dantas Galvão
- Central Public Health Laboratory of the State of Tocantins, Palmas 77054-970, Brazil; (F.D.P.C.); (J.D.G.)
| | - Evgeni Evgeniev Gabev
- Department of Physiology and Pathophysiology, Medical University of Sofia, 1431 Sofia, Bulgaria;
| | - Ana Cláudia Franco
- Virology Laboratory, Department of Microbiology, Immunology, and Parasitology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre 90050-170, Brazil; (A.C.F.); (P.M.R.)
| | - Paulo Michel Roehe
- Virology Laboratory, Department of Microbiology, Immunology, and Parasitology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre 90050-170, Brazil; (A.C.F.); (P.M.R.)
| | | | - Fabrício Souza Campos
- Bioinformatics and Biotechnology Laboratory, Campus of Gurupi, Federal University of Tocantins, Gurupi 77410-570, Brazil; (Y.d.S.M.M.); (R.N.d.S.)
- Virology Laboratory, Department of Microbiology, Immunology, and Parasitology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre 90050-170, Brazil; (A.C.F.); (P.M.R.)
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13
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Wu N, Ji J, Gou X, Hu P, Cheng Y, Liu Y, Wang Y, Zhang Q, Zuo L. DENV-2 NS1 promotes AMPK-LKB1 interaction to activate AMPK/ERK/mTOR signaling pathway to induce autophagy. Virol J 2023; 20:231. [PMID: 37821951 PMCID: PMC10568820 DOI: 10.1186/s12985-023-02166-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 08/23/2023] [Indexed: 10/13/2023] Open
Abstract
The global incidence of dengue fever has gradually increased in recent years, posing a serious threat to human health. In the absence of specific anti-dengue drugs, understanding the interaction of Dengue virus (DENV) with the host is essential for the development of effective therapeutic measures. Autophagy is often activated during DENV infection to promote viral replication, but the mechanism of how DENV's own proteins induce autophagy has not been clarified. In this study, we first preliminarily identified DENV-2 NS1 as the most likely viral protein for DENV-2-induced autophagy with the help of molecular docking techniques. Further experimental results confirmed that DENV-2 NS1 regulates DENV-2 infection of HUVEC-induced autophagy through the AMPK/ERK/mTOR signaling pathway. Mechanistically, DENV-2 NS1 mainly interacted with AMPK by means of its Wing structural domain, and NS1 bound to all three structural domains on the AMPKα subunit. Finally, the experimental results showed that DENV-2 NS1 promoted the interaction between LKB1 and AMPKα1 and thus activated AMPK by both increasing the expression of LKB1 and binding LKB1. In conclusion, the results of this study revealed that DENV-2 NS1 protein served as a platform for the interaction between AMPK and LKB1 after DENV-2 infection with HUVEC, and pulled AMPK and LKB1 together to form a complex. LKB1 to form a complex, promoting LKB1 action on the kinase structural domain of AMPKα1, which in turn promotes phosphorylation of the Thr172 site on the AMPK kinase structural domain and activates AMPK, thereby positively regulating the AMPK/ERK/mTOR signaling pathway and inducing autophagy. The present discovery improves our understanding of DENV-2-induced host autophagy and contributes to the development of anti-dengue drugs.
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Affiliation(s)
- Ning Wu
- Chemistry and Biochemistry Laboratory, Guizhou Medical University, No.9, Beijing Road, Yunyan District, Guiyang, 550000, Guizhou Province, China
| | - Jinzhong Ji
- Chemistry and Biochemistry Laboratory, Guizhou Medical University, No.9, Beijing Road, Yunyan District, Guiyang, 550000, Guizhou Province, China
| | - Xiaoqin Gou
- Chemistry and Biochemistry Laboratory, Guizhou Medical University, No.9, Beijing Road, Yunyan District, Guiyang, 550000, Guizhou Province, China
| | - Pan Hu
- Chemistry and Biochemistry Laboratory, Guizhou Medical University, No.9, Beijing Road, Yunyan District, Guiyang, 550000, Guizhou Province, China
| | - Yao Cheng
- Chemistry and Biochemistry Laboratory, Guizhou Medical University, No.9, Beijing Road, Yunyan District, Guiyang, 550000, Guizhou Province, China
| | - Yuhang Liu
- Chemistry and Biochemistry Laboratory, Guizhou Medical University, No.9, Beijing Road, Yunyan District, Guiyang, 550000, Guizhou Province, China
| | - Yuanying Wang
- Chemistry and Biochemistry Laboratory, Guizhou Medical University, No.9, Beijing Road, Yunyan District, Guiyang, 550000, Guizhou Province, China
| | - Qilong Zhang
- Chemistry and Biochemistry Laboratory, Guizhou Medical University, No.9, Beijing Road, Yunyan District, Guiyang, 550000, Guizhou Province, China.
| | - Li Zuo
- Department of Immunology, Guizhou Medical University, No.9, Beijing Road, Yunyan District, Guiyang, 550000, Guizhou Province, China.
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14
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Nwe KM, Ngwe Tun MM, Muthugala R, Nabeshima T, Balingit JC, Rajamanthri L, Jayawardana D, Attanayake S, Inoue S, Takamatsu Y, Urano T, Morita K. Clinical, Virological, and Immunological Features in Cosmopolitan Genotype DENV-2-Infected Patients during a Large Dengue Outbreak in Sri Lanka in 2017. Am J Trop Med Hyg 2023; 109:917-925. [PMID: 37696512 PMCID: PMC10551097 DOI: 10.4269/ajtmh.22-0780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 07/05/2023] [Indexed: 09/13/2023] Open
Abstract
In 2017, Sri Lanka experienced its largest dengue epidemic and reported severe and unusual presentations of dengue with high morbidity. This outbreak was associated with the reemergence of dengue virus-2 (DENV-2), with the responsible strain identified as a variant of the previously circulating DENV-2 cosmopolitan genotype. In this study, we characterized the DENV-2 cosmopolitan genotype from patients during this epidemic. Also, we identified host factors that contributed to the severity of dengue infection in patients infected with this particular virus. Ninety-one acute serum samples from patients at the National Hospital in Kandy were randomly selected. Of these, 40.2% and 48.9% were positive for dengue IgM and IgG, respectively. NS1 antigen levels were significantly higher in primary infections. The severe dengue (SD) and dengue with warning signs (DWWS) groups exhibited significantly higher viral genome and infectivity titers than the dengue without warning signs (DWoWS) group. The highest viremia level was observed in SD patients. As for host cytokine response, interferon α (IFN-α) levels were significantly higher in the DWoWS group than in the DWWS and SD groups, whereas interleukin (IL)-12p40 and tumor necrosis factor α (TNF-α) levels in SD patients were significantly higher than in the other two groups. The TNF-α, IL-4, and monocyte chemoattractant protein-1 concentrations were positively correlated with NS1 antigen levels. From whole-genome analysis, NS4 had the highest frequency of amino acid variants, followed by the E gene. Our study suggests that viremia levels and immune responses contributed to SD outcomes, and these findings may help in identifying an effective therapeutic strategy against SD infection.
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Affiliation(s)
- Khine Mya Nwe
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Mya Myat Ngwe Tun
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
- Department of Tropical Viral Vaccine Development, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
- Center for Vaccines and Therapeutic Antibodies for Emerging Infectious Diseases, Shimane University, Izumo, Japan
| | | | - Takeshi Nabeshima
- Kenya Research Station, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Jean Claude Balingit
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
- Department of Tropical Viral Vaccine Development, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | | | | | | | - Shingo Inoue
- Kenya Research Station, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Yuki Takamatsu
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Takeshi Urano
- Center for Vaccines and Therapeutic Antibodies for Emerging Infectious Diseases, Shimane University, Izumo, Japan
| | - Kouichi Morita
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
- Department of Tropical Viral Vaccine Development, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
- DEJIMA Infectious Disease Research Alliance, Nagasaki University, Nagasaki, Japan
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15
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Gräf T, Ferreira CDN, de Lima GB, de Lima RE, Machado LC, Campos TDL, Schemberger MO, Faoro H, Paiva MHS, Bezerra MF, Nascimento V, Souza V, Nascimento F, Mejía M, Silva D, de Oliveira YS, Gonçalves L, Ramos TCA, de Castro DB, Arcanjo AR, Dantas HAP, Presibella MM, Fernandes SB, Gregianini TS, Paz E Silva KM, Sacchi CT, Cruz ACR, Duarte dos Santos CN, Bispo de Filippis AM, Bello G, Wallau GL, Salvato RS, Naveca F. Multiple introductions and country-wide spread of DENV-2 genotype II (Cosmopolitan) in Brazil. Virus Evol 2023; 9:vead059. [PMID: 38288387 PMCID: PMC10824474 DOI: 10.1093/ve/vead059] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/28/2023] [Accepted: 09/20/2023] [Indexed: 01/31/2024] Open
Abstract
Dengue virus serotype 2, genotype Cosmopolitan (DENV-2-GII), is one of the most widespread DENV strains globally. In the USA, DENV-2 epidemics have been dominated by DENV-2 genotype Asian-American (DENV-2-GIII), and the first cases of DENV-2-GII were only described in 2019, in Peru, and in 2021 in Brazil. To gain new information about the circulation of DENV-2-GII in Brazil, we sequenced 237 DENV-2 confirmed cases sampled between March 2021 and March 2023 and revealed that DENV-2-GII is already present in all geographic regions of Brazil. The phylogeographic analysis inferred that DENV-2-GII was introduced at least four times in Brazil, between May 2020 and August 2022, generating multiple clades that spread throughout the country with different success. Despite multiple introductions of DENV-2-GII, analysis of the country-wide laboratory surveillance data showed that the Brazilian dengue epidemic in 2022 was dominated by DENV-1 in most states. We hypothesize that massive circulation of DENV-2-GIII in previous years in Brazil might have created a population immune barrier against symptomatic homotypic reinfections by DENV-2-GII, leading to sustained cryptic circulation in asymptomatic cases and localized outbreaks of this new genotype. In summary, our study stresses the importance of arboviral genomic surveillance to close monitoring and better understanding the potential impact of DENV-2-GII in the coming years.
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Affiliation(s)
- Tiago Gräf
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba 81350-010, Brazil
| | | | - Gustavo Barbosa de Lima
- Núcleo de Plataformas Tecnológicas (NPT), Instituto Aggeu Magalhães (IAM), FIOCRUZ-Pernambuco, Recife, Pernambuco 50740-465, Brazil
| | - Raul Emídio de Lima
- Núcleo de Plataformas Tecnológicas (NPT), Instituto Aggeu Magalhães (IAM), FIOCRUZ-Pernambuco, Recife, Pernambuco 50740-465, Brazil
| | - Lais Ceschini Machado
- Departamento de Entomologia, Instituto Aggeu Magalhães (IAM)-Fundação Oswaldo Cruz-FIOCRUZ, Recife, Pernambuco 50670-420, Brazil
- Núcleo de Bioinformática (NBI), Instituto Aggeu Magalhães (IAM), FIOCRUZ-Pernambuco, Recife, Pernambuco 50740-465, Brazil
| | - Tulio de Lima Campos
- Núcleo de Bioinformática (NBI), Instituto Aggeu Magalhães (IAM), FIOCRUZ-Pernambuco, Recife, Pernambuco 50740-465, Brazil
| | - Michelle Orane Schemberger
- Laboratório de Ciências e Tecnologias Aplicadas em Saúde, Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba 81350-010, Brazil
| | - Helisson Faoro
- Laboratório de Ciências e Tecnologias Aplicadas em Saúde, Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba 81350-010, Brazil
| | - Marcelo Henrique Santos Paiva
- Núcleo de Ciências da Vida, Universidade Federal de Pernambuco (UFPE), Centro Acadêmico do Agreste-Rodovia BR-104, km 59-Nova Caruaru, Caruaru 55002-970, Brazil
| | - Matheus Filgueira Bezerra
- Departamento de Microbiologia, Instituto Aggeu Magalhães (IAM), FIOCRUZ-Pernambuco, Recife, Pernambuco 50740-465, Brazil
| | - Valdinete Nascimento
- Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Instituto Leônidas e Maria Deane, Fiocruz, Manaus 69057-070, Brazil
| | - Victor Souza
- Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Instituto Leônidas e Maria Deane, Fiocruz, Manaus 69057-070, Brazil
| | - Fernanda Nascimento
- Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Instituto Leônidas e Maria Deane, Fiocruz, Manaus 69057-070, Brazil
| | - Matilde Mejía
- Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Instituto Leônidas e Maria Deane, Fiocruz, Manaus 69057-070, Brazil
| | - Dejanane Silva
- Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Instituto Leônidas e Maria Deane, Fiocruz, Manaus 69057-070, Brazil
| | - Yasmin Silva de Oliveira
- Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Instituto Leônidas e Maria Deane, Fiocruz, Manaus 69057-070, Brazil
| | - Luciana Gonçalves
- Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Instituto Leônidas e Maria Deane, Fiocruz, Manaus 69057-070, Brazil
- Fundação de Vigilância em Saúde do Amazonas—Dra Rosemary Costa Pinto, Manaus, Amazonas 69093-018, Brazil
| | - Tatyana Costa Amorim Ramos
- Fundação de Vigilância em Saúde do Amazonas—Dra Rosemary Costa Pinto, Manaus, Amazonas 69093-018, Brazil
| | - Daniel Barros de Castro
- Fundação de Vigilância em Saúde do Amazonas—Dra Rosemary Costa Pinto, Manaus, Amazonas 69093-018, Brazil
| | - Ana Ruth Arcanjo
- Laboratório Central de Saúde Pública do Amazonas (LACEN-AM), Manaus, Amazonas 69020-040, Brazil
| | | | - Mayra Marinho Presibella
- Laboratório Central de Saúde Pública do Estado do Paraná (LACEN-PR), São José dos Pinhais, Paraná 83060-500, Brazil
| | - Sandra Bianchini Fernandes
- Laboratório Central de Saúde Pública do Estado de Santa Catarina (LACEN-SC), Florianópolis, Santa Catarina 88010-001, Brazil
| | - Tatiana Schaffer Gregianini
- Laboratório Central de Saúde Pública do Rio Grande do Sul (LACEN-RS), Porto Alegre, Rio Grande do Sul 90610-000, Brazil
| | - Keilla Maria Paz E Silva
- Laboratório Central de Saúde Pública de Pernambuco (LACEN-PE), Recife, Pernambuco 50050-210, Brazil
| | | | - Ana Cecília Ribeiro Cruz
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua, Para 670030-000, Brazil
- Institute of Biological Sciences, Federal University of Pará, Belém, Para 66075-110, Brazil
| | | | - Ana Maria Bispo de Filippis
- Laboratório de Arbovírus e Vírus Hemorrágicos, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro 21040-360, Brazil
| | - Gonzalo Bello
- Laboratório de Arbovírus e Vírus Hemorrágicos, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro 21040-360, Brazil
| | - Gabriel Luz Wallau
- Departamento de Entomologia, Instituto Aggeu Magalhães (IAM)-Fundação Oswaldo Cruz-FIOCRUZ, Recife, Pernambuco 50670-420, Brazil
- Núcleo de Bioinformática (NBI), Instituto Aggeu Magalhães (IAM), FIOCRUZ-Pernambuco, Recife, Pernambuco 50740-465, Brazil
- Department of Arbovirology, Bernhard Nocht Institute for Tropical Medicine, WHO Collaborating Center for Arbovirus and Hemorrhagic Fever Reference and Research, National Reference Center for Tropical Infectious Diseases, Bernhard-Nocht-Straße 74, Hamburg 20359, Germany
| | - Richard Steiner Salvato
- Laboratório Central de Saúde Pública do Rio Grande do Sul (LACEN-RS), Porto Alegre, Rio Grande do Sul 90610-000, Brazil
| | - Felipe Naveca
- Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Instituto Leônidas e Maria Deane, Fiocruz, Manaus 69057-070, Brazil
- Laboratório de Arbovírus e Vírus Hemorrágicos, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro 21040-360, Brazil
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de Carvalho Marques B, Sacchetto L, Banho CA, Estofolete CF, Dourado FS, da Silva Cândido D, Dutra KR, da Silva Salles FC, de Jesus JG, Sabino EC, Faria NR, Nogueira ML. Genetic differences of dengue virus 2 in patients with distinct clinical outcome. Braz J Microbiol 2023; 54:1411-1419. [PMID: 37178262 PMCID: PMC10485208 DOI: 10.1007/s42770-023-01006-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 05/05/2023] [Indexed: 05/15/2023] Open
Abstract
The genetic diversity of the dengue virus is characterized by four circulating serotypes, several genotypes, and an increasing number of existing lineages that may have differences in the potential to cause epidemics and disease severity. Accurate identification of the genetic variability of the virus is essential to identify lineages responsible for an epidemic and understanding the processes of virus spread and virulence. Here, we characterize, using portable nanopore genomic sequencing, different lineages of dengue virus 2 (DENV-2) detected in 22 serum samples from patients with and without dengue warning signs attended at Hospital de Base of São José do Rio Preto (SJRP) in 2019, during a DENV-2 outbreak. Demographic, epidemiological, and clinical data were also analyzed. The phylogenetic reconstruction and the clinical data showed that two lineages belonging to the American/Asian genotype of DENV-2-BR3 and BR4 (BR4L1 and BR4L2)-were co-circulating in SJRP. Although preliminary, these results indicate no specific association between clinical form and phylogenetic clustering at the virus consensus sequence level. Studies with larger sample sizes and which explore single nucleotide variants are needed. Therefore, we showed that portable nanopore genome sequencing could generate quick and reliable sequences for genomic surveillance to monitor viral diversity and its association with disease severity as an epidemic unfolds.
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Affiliation(s)
- Beatriz de Carvalho Marques
- Laboratório de Pesquisas Em Virologia, Departamento de Doenças Dermatológicas, Infecciosas E Parasitárias, Faculdade de Medicina de São José Do Rio Preto, Avenida Brigadeiro Faria Lima, 5416 São José Do Rio Preto, São Paulo, 15090-000, Brazil
| | - Lívia Sacchetto
- Laboratório de Pesquisas Em Virologia, Departamento de Doenças Dermatológicas, Infecciosas E Parasitárias, Faculdade de Medicina de São José Do Rio Preto, Avenida Brigadeiro Faria Lima, 5416 São José Do Rio Preto, São Paulo, 15090-000, Brazil
| | - Cecília Artico Banho
- Laboratório de Pesquisas Em Virologia, Departamento de Doenças Dermatológicas, Infecciosas E Parasitárias, Faculdade de Medicina de São José Do Rio Preto, Avenida Brigadeiro Faria Lima, 5416 São José Do Rio Preto, São Paulo, 15090-000, Brazil
| | - Cássia Fernanda Estofolete
- Laboratório de Pesquisas Em Virologia, Departamento de Doenças Dermatológicas, Infecciosas E Parasitárias, Faculdade de Medicina de São José Do Rio Preto, Avenida Brigadeiro Faria Lima, 5416 São José Do Rio Preto, São Paulo, 15090-000, Brazil
| | - Fernanda Simões Dourado
- Laboratório de Pesquisas Em Virologia, Departamento de Doenças Dermatológicas, Infecciosas E Parasitárias, Faculdade de Medicina de São José Do Rio Preto, Avenida Brigadeiro Faria Lima, 5416 São José Do Rio Preto, São Paulo, 15090-000, Brazil
| | | | - Karina Rocha Dutra
- Laboratório de Pesquisas Em Virologia, Departamento de Doenças Dermatológicas, Infecciosas E Parasitárias, Faculdade de Medicina de São José Do Rio Preto, Avenida Brigadeiro Faria Lima, 5416 São José Do Rio Preto, São Paulo, 15090-000, Brazil
| | | | - Jaqueline Góes de Jesus
- Instituto de Medicina Tropical da Faculdade de Medicina - Universidade de São Paulo, São Paulo, Brazil
| | - Ester Cerdeira Sabino
- Instituto de Medicina Tropical da Faculdade de Medicina - Universidade de São Paulo, São Paulo, Brazil
| | - Nuno Rodrigues Faria
- Department of Zoology, University of Oxford, Oxford, UK
- Instituto de Medicina Tropical da Faculdade de Medicina - Universidade de São Paulo, São Paulo, Brazil
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK
- The Abdul Latif Jameel Institute for Disease and Emergency Analytics (J-IDEA), School of Public Health, Imperial College London, London, UK
| | - Maurício Lacerda Nogueira
- Laboratório de Pesquisas Em Virologia, Departamento de Doenças Dermatológicas, Infecciosas E Parasitárias, Faculdade de Medicina de São José Do Rio Preto, Avenida Brigadeiro Faria Lima, 5416 São José Do Rio Preto, São Paulo, 15090-000, Brazil.
- Department of Pathology, The University of Texas Medical Branch, Galveston, TX, USA.
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Amorim MT, Hernández LHA, Naveca FG, Essashika Prazeres IT, Wanzeller ALM, Silva EVPD, Casseb LMN, Silva FSD, da Silva SP, Nunes BTD, Cruz ACR. Emergence of a New Strain of DENV-2 in South America: Introduction of the Cosmopolitan Genotype through the Brazilian-Peruvian Border. Trop Med Infect Dis 2023; 8:325. [PMID: 37368743 DOI: 10.3390/tropicalmed8060325] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
Dengue virus 2 (DENV-2) seriously contributes to dengue-related mortality. It includes five nonsylvatic genotypes, with cosmopolitan being the most widespread with a significant contribution to the total number of DENV-2 cases globally. In South America, the cosmopolitan genotype was first recorded in 2019 in Madre de Dios, Peru, and then in Goiás (Midwest Brazil) in November 2021. In this study, we tested 163 human serum samples from Acre (Northern Brazil) collected during a DENV outbreak between 2020 and 2021 for all DENV genotypes by RT-qPCR. Of the 163 samples, 139 were positive for DENV-2, and 5 were positive for DENV-1. Five DENV-2-positive samples from early 2021 were sequenced, and the sequences clustered with the three other DENV-2 cosmopolitan genotype sequences already recorded on the continent. These results create a geographical link, suggesting the possible route of introduction of the DENV-2 cosmopolitan genotype into Brazil through the border with Peru, from which it may have dispersed to Midwest Brazil.
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Affiliation(s)
- Murilo Tavares Amorim
- Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, Brazil
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil
| | - Leonardo H Almeida Hernández
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil
| | | | - Ivy Tsuya Essashika Prazeres
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil
| | - Ana Lucia Monteiro Wanzeller
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil
| | - Eliana Vieira Pinto da Silva
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil
| | - Livia M Neves Casseb
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil
| | - Fábio Silva da Silva
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil
| | - Sandro Patroca da Silva
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil
| | - Bruno Tardelli Diniz Nunes
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil
| | - Ana Cecília Ribeiro Cruz
- Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, Brazil
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Health and Environment Surveillance Secretariat, Ministry of Health, Ananindeua 67030-000, Brazil
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Ho SH, Lim JT, Ong J, Hapuarachchi HC, Sim S, Ng LC. Singapore's 5 decades of dengue prevention and control-Implications for global dengue control. PLoS Negl Trop Dis 2023; 17:e0011400. [PMID: 37347767 DOI: 10.1371/journal.pntd.0011400] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023] Open
Abstract
This paper summarises the lessons learnt in dengue epidemiology, risk factors, and prevention in Singapore over the last half a century, during which Singapore evolved from a city of 1.9 million people to a highly urban globalised city-state with a population of 5.6 million. Set in a tropical climate, urbanisation among green foliage has created ideal conditions for the proliferation of Aedes aegypti and Aedes albopictus, the mosquito vectors that transmit dengue. A vector control programme, largely for malaria, was initiated as early as 1921, but it was only in 1966 that the Vector Control Unit (VCU) was established to additionally tackle dengue haemorrhagic fever (DHF) that was first documented in the 1960s. Centred on source reduction and public education, and based on research into the bionomics and ecology of the vectors, the programme successfully reduced the Aedes House Index (HI) from 48% in 1966 to <5% in the 1970s. Further enhancement of the programme, including through legislation, suppressed the Aedes HI to around 1% from the 1990s. The current programme is characterised by 4 key features: (i) proactive inter-epidemic surveillance and control that is stepped up during outbreaks; (ii) risk-based prevention and intervention strategies based on advanced data analytics; (iii) coordinated inter-sectoral cooperation between the public, private, and people sectors; and (iv) evidence-based adoption of new tools and strategies. Dengue seroprevalence and force of infection (FOI) among residents have substantially and continuously declined over the 5 decades. This is consistent with the observation that dengue incidence has been delayed to adulthood, with severity highest among the elderly. Paradoxically, the number of reported dengue cases and outbreaks has increased since the 1990s with record-breaking epidemics. We propose that Singapore's increased vulnerability to outbreaks is due to low levels of immunity in the population, constant introduction of new viral variants, expanding urban centres, and increasing human density. The growing magnitude of reported outbreaks could also be attributed to improved diagnostics and surveillance, which at least partially explains the discord between rising trend in cases and the continuous reduction in dengue seroprevalence. Changing global and local landscapes, including climate change, increasing urbanisation and global physical connectivity are expected to make dengue control even more challenging. The adoption of new vector surveillance and control tools, such as the Gravitrap and Wolbachia technology, is important to impede the growing threat of dengue and other Aedes-borne diseases.
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Affiliation(s)
- Soon Hoe Ho
- Environmental Health Institute, National Environment Agency, Singapore, Singapore
| | - Jue Tao Lim
- Environmental Health Institute, National Environment Agency, Singapore, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University Novena Campus, Singapore, Singapore
| | - Janet Ong
- Environmental Health Institute, National Environment Agency, Singapore, Singapore
| | | | - Shuzhen Sim
- Environmental Health Institute, National Environment Agency, Singapore, Singapore
| | - Lee Ching Ng
- Environmental Health Institute, National Environment Agency, Singapore, Singapore
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
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19
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Dafalla O, Abdulhaq AA, Almutairi H, Noureldin E, Ghzwani J, Mashi O, Shrwani KJ, Hobani Y, Sufyani O, Ayed R, Alamri A, Al-Mekhlafi HM, Eisa ZM. The emergence of an imported variant of dengue virus serotype 2 in the Jazan region, southwestern Saudi Arabia. Trop Dis Travel Med Vaccines 2023; 9:5. [PMID: 36922890 PMCID: PMC10018863 DOI: 10.1186/s40794-023-00188-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/30/2023] [Indexed: 03/17/2023] Open
Abstract
BACKGROUND Dengue virus (DENV) infection is a global economic and public health concern, particularly in tropical and subtropical countries where it is endemic. Saudi Arabia has seen an increase in DENV infections, especially in the western and southwestern regions. This study aims to investigate the genetic variants of DENV-2 that were circulating during a serious outbreak in Jazan region in 2019. METHODS A total of 482 serum samples collected during 2019 from Jazan region were tested with reverse transcription-polymerase chain reaction (RT-PCR) to detect and classify DENV; positive samples underwent sequencing and bioinformatics analyses. RESULTS Out of 294 positive samples, type-specific RT-PCR identified 58.8% as DENV-2 but could not identify 41.2%. Based on sequencing and bioinformatics analyses, the samples tested PCR positive in the first round but PCR negative in the second round were found to be imported genetic variant of DENV-2. The identified DENV-2 imported variant showed similarities to DENV-2 sequences reported in Malaysia, Singapore, Korea and China. The results revealed the imported genetic variant of DENV-2 was circulating in Jazan region that was highly prevalent and it was likely a major factor in this outbreak. CONCLUSIONS The emergence of imported DENV variants is a serious challenge for the dengue fever surveillance and control programmes in endemic areas. Therefore, further investigations and continuous surveillance of existing and new viral strains in the region are warranted.
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Affiliation(s)
- Ommer Dafalla
- Saudi Public Health Authority, Jazan, Kingdom of Saudi Arabia.
| | | | - Hatim Almutairi
- Saudi Public Health Authority, Jazan, Kingdom of Saudi Arabia.
| | | | - Jaber Ghzwani
- Saudi Public Health Authority, Jazan, Kingdom of Saudi Arabia
| | - Omar Mashi
- Saudi Public Health Authority, Jazan, Kingdom of Saudi Arabia
| | | | - Yahya Hobani
- Saudi Public Health Authority, Jazan, Kingdom of Saudi Arabia
| | - Ohood Sufyani
- Saudi Public Health Authority, Jazan, Kingdom of Saudi Arabia
| | - Reem Ayed
- Saudi Public Health Authority, Jazan, Kingdom of Saudi Arabia
| | - Abdullah Alamri
- Saudi Public Health Authority, Jazan, Kingdom of Saudi Arabia
| | | | - Zaki M Eisa
- Saudi Public Health Authority, Jazan, Kingdom of Saudi Arabia
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Changing Ecotypes of Dengue Virus 2 Serotype in Nigeria and the Emergence of Cosmopolitan and Asian I Lineages, 1966–2019. Vaccines (Basel) 2023; 11:vaccines11030547. [PMID: 36992135 DOI: 10.3390/vaccines11030547] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 02/13/2023] [Accepted: 02/24/2023] [Indexed: 03/02/2023] Open
Abstract
Dengue virus (DENV) is a leading mosquito-borne virus with a wide geographical spread and a major public health concern. DENV serotype 1 (DENV-1) and serotype 2 (DENV-2) were first reported in Africa in 1964 in Ibadan, Nigeria. Although the burden of dengue is unknown in many African countries, DENV-2 is responsible for major epidemics. In this study, we investigated the activities of DENV-2 to determine the circulating strains and to appraise the changing dynamics in the epidemiology of the virus in Nigeria. Nineteen DENV-2 sequences from 1966–2019 in Nigeria were retrieved from the GenBank of the National Center of Biotechnology Information (NCBI). A DENV genotyping tool was used to identify the specific genotypes. The evolutionary history procedure was performed on 54 DENV-2 sequences using MEGA 7. There is a deviation from Sylvatic DENV-2 to other genotypes in Nigeria. In 2019, the Asian I genotype of DENV-2 was predominant in southern Edo State, located in the tropical rainforest region, with the first report of the DENV-2 Cosmopolitan strain. We confirmed the circulation of other non-assigned genotypes of DENV-2 in Nigeria. Collectively, this shows that DENV-2 dynamics have changed from Sylvatic transmission reported in the 1960s with the identification of the Cosmopolitan strain and Asian lineages. Sustained surveillance, including vectorial studies, is required to fully establish the trend and determine the role of these vectors.
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Genomic Characterization of Dengue Virus Outbreak in 2022 from Pakistan. Vaccines (Basel) 2023; 11:vaccines11010163. [PMID: 36680008 PMCID: PMC9867254 DOI: 10.3390/vaccines11010163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/23/2022] [Accepted: 01/10/2023] [Indexed: 01/14/2023] Open
Abstract
Pakistan, a dengue-endemic country, has encountered several outbreaks during the past decade. The current study aimed to explore the serotype and genomic diversity of dengue virus responsible for the 2022 outbreak in Pakistan. From August to October 2022, NS-1 positive blood samples (n = 343) were collected from dengue patients, among which, (85%; n = 293) were positive based on RT-PCR. In terms of gender and age, dengue infection was more prevalent in male patients (63%; n = 184), with more adults (21-30 years; n = 94) being infected. The serotyping results revealed DENV-2 to be the most predominant serotype (62%; n = 183), followed by DENV-1 (37%; n = 109) and DENV-3 (0.32%; n = 1). Moreover, a total of 10 samples (DENV-2; n = 8, DENV-1; n = 2) were subjected to whole-genome sequencing. Among these, four were collected in early 2022, and six were collected between August and October 2022. Phylogenetic analysis of DENV-2 sequenced samples (n = 8) revealed a monophyletic clade of cosmopolitan genotype IVA, which is closely related to sequences from China and Singapore 2018, and DENV-1 samples (n = 2) show genotype III, which is closely related to Pakistan isolates from 2019. We also reported the first whole genome sequence of a coinfection case (DENV1-DENV2) in Pakistan detected through a meta-genome approach. Thus, dengue virus dynamics reported in the current study warrant large-scale genomic surveillance to better respond to future outbreaks.
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Dieng I, Ndiaye M, Ndione MHD, Sankhe S, Diagne MM, Sagne SN, Gaye A, Balde D, Barry A, Fall G, Sall AA, Loucoubar C, Faye O, Faye O. Molecular characterization of circulating Dengue virus 2 during an outbreak in Northern Senegal's Saint-Louis region in 2018. J Med Virol 2023; 95:e28347. [PMID: 36424699 DOI: 10.1002/jmv.28347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022]
Abstract
Globally, 390 million people are at risk of dengue infection and over the past 50 years, the virus incidence increased thirty-fold. In Senegal, an unprecedented occurrence of outbreaks and sporadic cases have been noticed since 2017. In October 2018, an outbreak of Dengue virus 2 (DENV-2) was reported in the north of Senegal affecting multiple areas including Saint-Louis, Richard Toll, and Rosso which are located at the border with Mauritania. Of these 173 blood specimen samples collected from patients, 27 were positive for dengue by quantitative reverse transcription PCR (qRT-PCR), and eight were serologically confirmed to be positive for DENV immunoglobulin M (IgM). Serotyping using qRT-PCR reveals that isolates were positive for DENV-2. A subset of DENV-2 positive samples was selected and subjected to whole-genome sequencing followed by phylogenetic analysis. Analysis of six nearly complete genome sequences revealed that the isolates belong to the cosmopolitan genotype and are closely related to the Mauritanian strains detected between 2017 and 2018 and those detected in many West African countries such as Burkina Faso or Cote d'Ivoire. Our results suggest a transboundary circulation of the DENV-2 cosmopolitan genotype between Senegal and Mauritania and call for a need for coordinated surveillance of arboviruses between these two countries. Interestingly, a high level of homology between West African isolates highlights endemicity and calls for the set-up of subregional viral genomic surveillance which will lead to a better understanding of viral dynamics, transmission, and spread across Africa.
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Affiliation(s)
- Idrissa Dieng
- Arboviruses and Haemorrhagic Fever Viruses Unit, Virology Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Mignane Ndiaye
- Arboviruses and Haemorrhagic Fever Viruses Unit, Virology Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Marie Henriette Dior Ndione
- Arboviruses and Haemorrhagic Fever Viruses Unit, Virology Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Safietou Sankhe
- Arboviruses and Haemorrhagic Fever Viruses Unit, Virology Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Moussa Moïse Diagne
- Arboviruses and Haemorrhagic Fever Viruses Unit, Virology Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Samba Niang Sagne
- Epidemiology, Clinical Research and Data Science Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Aboubacry Gaye
- Epidemiology, Clinical Research and Data Science Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Diamilatou Balde
- Arboviruses and Haemorrhagic Fever Viruses Unit, Virology Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Aliou Barry
- Epidemiology, Clinical Research and Data Science Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Gamou Fall
- Arboviruses and Haemorrhagic Fever Viruses Unit, Virology Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Amadou Alpha Sall
- Arboviruses and Haemorrhagic Fever Viruses Unit, Virology Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Cheikh Loucoubar
- Epidemiology, Clinical Research and Data Science Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Oumar Faye
- Arboviruses and Haemorrhagic Fever Viruses Unit, Virology Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Ousmane Faye
- Arboviruses and Haemorrhagic Fever Viruses Unit, Virology Department, Institut Pasteur de Dakar, Dakar, Senegal
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Wu N, Gou X, Hu P, Chen Y, Ji J, Wang Y, Zuo L. Mechanism of autophagy induced by activation of the AMPK/ERK/mTOR signaling pathway after TRIM22-mediated DENV-2 infection of HUVECs. Virol J 2022; 19:228. [PMID: 36587218 PMCID: PMC9805691 DOI: 10.1186/s12985-022-01932-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 11/22/2022] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Dengue virus type 2 (DENV-2) was used to infect primary human umbilical vein endothelial cells (HUVECs) to examine autophagy induced by activation of the adenosine monophosphate-activated protein kinase (AMPK)/extracellular signal-regulated kinase (ERK)/mammalian target of rapamycin (mTOR) signaling pathway following tripartite motif-containing 22 (TRIM22)-mediated DENV-2 infection to further reveal the underlying pathogenic mechanism of DENV-2 infection. METHODS Quantitative real-time polymerase chain reaction (qRT-PCR) was used to screen putative interference targets of TRIM22 and determine the knockdown efficiency. The effect of TRIM22 knockdown on HUVEC proliferation was determined using the CCK8 assay. Following TRIM22 knockdown, transmission electron microscopy (TEM) was used to determine the ultrastructure of HUVEC autophagosomes and expression of HUVEC autophagy and AMPK pathway-related genes were measured by qRT-PCR. Moreover, HUVEC autophagy and AMPK pathway-related protein expression levels were determined by western blot analysis. Cell cycle and apoptosis were assessed by flow cytometry (FCM) and the autophagosome structure of the HUVECs was observed by TEM. RESULTS Western blot results indicated that TRIM22 protein expression levels increased significantly 36 h after DENV-2 infection, which was consistent with the proteomics prediction. The CCK8 assay revealed that HUVEC proliferation was reduced following TRIM22 knockdown (P < 0.001). The TEM results indicated that HUVEC autolysosomes increased and autophagy was inhibited after TRIM22 knockdown. The qRT-PCR results revealed that after TRIM22 knockdown, the expression levels of antithymocyte globulin 7 (ATG7), antithymocyte globulin 5 (ATG5), Beclin1, ERK, and mTOR genes decreased (P < 0.01); however, the expression of AMPK genes (P < 0.05) and P62 genes (P < 0.001) increased. FCM revealed that following TRIM22 knockdown, the percentage of HUVECs in the G2 phase increased (P < 0.001) along with cell apoptosis. The effect of TRIM22 overexpression on HUVEC autophagy induced by DENV-2 infection and AMPK pathways decreased after adding an autophagy inhibitor. CONCLUSIONS In HUVECs, TRIM22 protein positively regulates autophagy and may affect autophagy through the AMPK/ERK/mTOR signaling pathway. Autophagy is induced by activation of the AMPK/ERK/mTOR signaling pathway following TRIM22-mediated DENV-2 infection of HUVECs.
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Affiliation(s)
- Ning Wu
- grid.413458.f0000 0000 9330 9891Chemistry and Biochemistry Laboratory, Guizhou Medical University, Guiyang, China
| | - Xiaoqin Gou
- grid.413458.f0000 0000 9330 9891Chemistry and Biochemistry Laboratory, Guizhou Medical University, Guiyang, China
| | - Pan Hu
- grid.413458.f0000 0000 9330 9891Chemistry and Biochemistry Laboratory, Guizhou Medical University, Guiyang, China
| | - Yao Chen
- grid.413458.f0000 0000 9330 9891Chemistry and Biochemistry Laboratory, Guizhou Medical University, Guiyang, China
| | - Jinzhong Ji
- grid.413458.f0000 0000 9330 9891Chemistry and Biochemistry Laboratory, Guizhou Medical University, Guiyang, China
| | - Yuanying Wang
- grid.413458.f0000 0000 9330 9891Chemistry and Biochemistry Laboratory, Guizhou Medical University, Guiyang, China
| | - Li Zuo
- grid.413458.f0000 0000 9330 9891Department of Immunology, Guizhou Medical University, Guiyang, China
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Molecular surveillance of arboviruses circulation and co-infection during a large chikungunya virus outbreak in Thailand, October 2018 to February 2020. Sci Rep 2022; 12:22323. [PMID: 36566236 PMCID: PMC9789961 DOI: 10.1038/s41598-022-27028-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 12/23/2022] [Indexed: 12/25/2022] Open
Abstract
A large national outbreak of chikungunya virus (CHIKV) was recently reported in Thailand. While dengue virus (DENV) infection tends to occur year-round with an upsurge in the rainy season, Zika virus (ZIKV) also circulates in the country. The overlap in the distribution of these viruses increased the probability of co-infections during the heightened CHIKV activity. By examining 1806 patient serum samples submitted for CHIKV diagnostics from October 2018-February 2020 (511 CHIKV-negatives and 1295 CHIKV-positives), we used real-time reverse transcription-polymerase chain reaction to identify DENV and ZIKV individually. A total of 29 ZIKV and 36 DENV single-infections were identified. Interestingly, 13 co-infection cases were observed, of which 8 were CHIKV/DENV, 3 were CHIKV/ZIKV, and 2 were DENV/ZIKV. There were six DENV genotypes (13 DENV-1 genotype I, 10 DENV-2 Asian I, 10 DENV-2 Cosmopolitan, 6 DENV-3 genotype I, 2 DENV-3 genotype III, and 5 DENV-4 genotype I). Additionally, ZIKV strains identified in this study either clustered with strains previously circulating in Thailand and Singapore, or with strains previously reported in China, French Polynesia, and the Americas. Our findings reveal the co-infection and genetic diversity patterns of mosquito-borne viruses circulating in Thailand.
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Dieng I, Diallo A, Ndiaye M, Mhamadi M, Diagne MM, Sankhe S, Ndione MHD, Gaye A, Sagne SN, Heraud JM, Sall AA, Fall G, Loucoubar C, Faye O, Faye O. Full genome analysis of circulating DENV-2 in Senegal reveals a regional diversification into separate clades. J Med Virol 2022; 94:5593-5600. [PMID: 35879861 DOI: 10.1002/jmv.28027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 07/09/2022] [Accepted: 07/21/2022] [Indexed: 12/15/2022]
Abstract
To assess the genetic diversity of circulating dengue virus 2 (DENV-2) in Senegal, we analyzed nine newly generated complete genomes of strains isolated during the 2018 outbreaks and 06 sequences obtained in 2018 and 2019 from Thiès and Rosso, respectively. Phylogenetic analyses revealed that Senegalese strains belonged to the cosmopolitan genotype of DENV-2, but we observed intragenotype variability leading to a divergence in two clades associated with specific geographic distribution. We report two DENV-2 variants belonging to two distinct clades. Isolates from the "Northern clade" (n = 8) harbored three nonsynonymous mutations (V1183M, R1405K, P2266T) located respectively on NS2A, NS2B, and NS4A, while isolates from the "Western clade" (n = 7) had two nonsynonymous mutations (V1185E, V3214E) located respectively in the NS2A and NS5 genes. These findings call for phylogeographic analysis to investigate routes of introductions, dispersal patterns, and in-depth in vitro and functional study to elucidate the impact of observed mutations on viral fitness, spread, epidemiology, and pathology.
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Affiliation(s)
- Idrissa Dieng
- Virology Department, Arboviruses and Haemorrhagic Fever Viruses Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Amadou Diallo
- Epidemiology, Clinical Research and Data Science Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Mignane Ndiaye
- Virology Department, Arboviruses and Haemorrhagic Fever Viruses Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Moufid Mhamadi
- Virology Department, Arboviruses and Haemorrhagic Fever Viruses Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Moussa Moïse Diagne
- Virology Department, Arboviruses and Haemorrhagic Fever Viruses Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Safietou Sankhe
- Virology Department, Arboviruses and Haemorrhagic Fever Viruses Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Marie Henriette Dior Ndione
- Virology Department, Arboviruses and Haemorrhagic Fever Viruses Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Aboubacry Gaye
- Epidemiology, Clinical Research and Data Science Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Samba Niang Sagne
- Epidemiology, Clinical Research and Data Science Department, Institut Pasteur de Dakar, Dakar, Senegal
| | - Jean Michel Heraud
- Virology Department, Arboviruses and Haemorrhagic Fever Viruses Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Amadou Alpha Sall
- Virology Department, Arboviruses and Haemorrhagic Fever Viruses Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Gamou Fall
- Virology Department, Arboviruses and Haemorrhagic Fever Viruses Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Cheikh Loucoubar
- Virology Department, Arboviruses and Haemorrhagic Fever Viruses Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Ousmane Faye
- Virology Department, Arboviruses and Haemorrhagic Fever Viruses Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Oumar Faye
- Virology Department, Arboviruses and Haemorrhagic Fever Viruses Unit, Institut Pasteur de Dakar, Dakar, Senegal
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26
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Ali IM, Tchuenkam VPK, Colton M, Stittleburg V, Mitchell C, Gaither C, Thwai K, Espinoza DO, Zhu Y, Jamal H, Key A, Juliano JJ, Christopher TB, Piantadosi A, Waggoner JJ, Collins MH. Arboviruses as an unappreciated cause of non-malarial acute febrile illness in the Dschang Health District of western Cameroon. PLoS Negl Trop Dis 2022; 16:e0010790. [PMID: 36223421 PMCID: PMC9591055 DOI: 10.1371/journal.pntd.0010790] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 10/24/2022] [Accepted: 09/05/2022] [Indexed: 11/07/2022] Open
Abstract
Acute febrile illness is a common problem managed by clinicians and health systems globally, particularly in the Tropics. In many regions, malaria is a leading and potentially deadly cause of fever; however, myriad alternative etiologies exist. Identifying the cause of fever allows optimal management, but this depends on many factors including thorough knowledge of circulating infections. Arboviruses such as dengue (DENV) cause fever and may be underdiagnosed in sub-Saharan Africa where malaria is a major focus. We examined cases of fever in western Cameroon that tested negative for malaria and found 13.5% (13/96) were due to DENV, with 75% (9/12) of these being DENV serotype 2 infections. Two complete DENV2 genomes were obtained and clustered closely to recent isolates from Senegal and Burkina Faso. The seroprevalence of DENV in this region was 24.8% (96/387). Neutralizing antibodies to DENV2 were detected in all (15/15) seropositive samples tested. Chikungunya (CHIKV) is an arthritogenic alphavirus that is transmitted by Aedes mosquitoes, the same principal vector as DENV. The seroprevalence for CHIKV was 15.7% (67/427); however, CHIKV did not cause a single case of fever in the 96 subjects tested. Of note, being seropositive for one arbovirus was associated with being seropositive for the other (Χ2 = 16.8, p<0.001). Taken together, these data indicate that Aedes-transmitted arboviruses are endemic in western Cameroon and are likely a common but underappreciated cause of febrile illness. This work supports the need for additional study of arboviruses in sub-Saharan Africa and efforts to improve diagnostic capacity, surveillance systems, and arbovirus prevention strategies. Acute illness with fever is common but can be challenging for clinicians to manage, particularly in resource-limited settings. In sub-Saharan Africa, malaria is a major cause of fever, but other causes of fever are poorly documented or monitored, which impairs optimal medical care to patients and implementation of public health interventions to control leading causes of disease. Viruses transmitted by mosquitoes are a prevalent and expanding problem throughout the tropics and beyond; however, there is concern that these infections frequently go undetected in sub-Saharan Africa. We discovered a previously unrecognized outbreak of dengue virus in western Cameroon by testing remnant samples from over 400 patients that presented with fever. Our results indicate that dengue has circulated in this region for decades with little recognition. This study adds important information about causes of fever in sub-Saharan Africa and advocates for increasing investment in surveillance systems and prevention strategies for mosquito-borne viruses.
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Affiliation(s)
- Innocent M. Ali
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, West Region of Cameroon, Cameroon
| | - Valery P. K. Tchuenkam
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, West Region of Cameroon, Cameroon
| | - Mia Colton
- Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
| | - Victoria Stittleburg
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Cedar Mitchell
- Division of Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Claudia Gaither
- Division of Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Kyaw Thwai
- Division of Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Daniel O. Espinoza
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Yerun Zhu
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Haaris Jamal
- Emory University, Atlanta, Georgia, United States of America
| | - Autum Key
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Jonathan J. Juliano
- Division of Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Tume B. Christopher
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, West Region of Cameroon, Cameroon
| | - Anne Piantadosi
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Jesse J. Waggoner
- Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Matthew H. Collins
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
- * E-mail:
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Farokhinejad F, Li J, Hugo LE, Howard CB, Wuethrich A, Trau M. Detection of Dengue Virus 2 with Single Infected Mosquito Resolution Using Yeast Affinity Bionanofragments and Plasmonic SERS Nanoboxes. Anal Chem 2022; 94:14177-14184. [PMID: 36194728 DOI: 10.1021/acs.analchem.2c02012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Dengue disease is an emerging global threat triggered by dengue virus (DENV) transmission, primarily by the mosquito Aedes aegypti. The accurate surveillance and sensitive detection of DENV in mosquito populations are critical for the protection of human populations worldwide that are in the habitat of these mosquito species. There are four DENV serotypes with DENV2 reported to cause the most severe complications. There are limited ultrasensitive methods to early detect DENV2 mosquito infection and prevent human infection. Herein, we report an innovative nanobased immunoassay platform for early, specific, and ultrasensitive detection of DENV2-secreted nonstructural 1 (NS1) protein biomarker in single infected mosquitoes with the limit of detection of 500 fg of recombinant DENV2 NS1. The high sensitivity and DENV2 serotype specificity of the platform are the result of using nanomixing, plasmonic SERS nanoboxes, and yeast affinity bionanofragments displaying single-chain variable fragments (nanoyeast scFvs). Nanoyeast scFvs used for high affinity capture of DENV2 NS1 provided an innovative and cost-efficient alternative to monoclonal antibodies and differentiated DENV2 NS1 from other DENV serotypes and Zika virus NS1. The platform used electrohydrodynamically driven nanomixing to enhance NS1 capture by the nanoyeast scFvs while reducing nonspecific interactions. High sensitivity detection of captured DENV2 NS1 was achieved using NS1-specific surface-enhanced Raman scattering (SERS) nanotags. These nanotechnologies provide a significant innovation for early DENV2 detection in single infected mosquitoes, improving the accurate surveillance of mosquito habitats and preventing infection and severe disease arising from DENV2 transmission.
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Affiliation(s)
- Fahimeh Farokhinejad
- Centre of Personalized Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Junrong Li
- Centre of Personalized Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Leon E Hugo
- Mosquito Control Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, Queensland 4006, Australia
| | - Christopher B Howard
- Centre of Personalized Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Alain Wuethrich
- Centre of Personalized Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Matt Trau
- Centre of Personalized Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia.,School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
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28
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Giovanetti M, Pereira LA, Santiago GA, Fonseca V, Mendoza MPG, de Oliveira C, de Moraes L, Xavier J, Tosta S, Fristch H, de Castro Barbosa E, Rodrigues ES, Figueroa-Romero D, Padilla-Rojas C, Cáceres-Rey O, Mendonça AF, de Bruycker Nogueira F, Venancio da Cunha R, de Filippis AMB, Freitas C, Peterka CRL, de Albuquerque CFC, Franco L, Méndez Rico JA, Muñoz-Jordán JL, Lemes da Silva V, Alcantara LCJ. Emergence of Dengue Virus Serotype 2 Cosmopolitan Genotype, Brazil. Emerg Infect Dis 2022; 28:1725-1727. [PMID: 35876608 PMCID: PMC9328905 DOI: 10.3201/eid2808.220550] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
We used nanopore sequencing and phylogenetic analyses to identify a cosmopolitan genotype of dengue virus serotype 2 that was isolated from a 56-year-old male patient from the state of Goiás in Brazil. The emergence of a cosmopolitan genotype in Brazil will require risk assessment and surveillance to reduce epidemic potential.
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29
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Altamish M, Khan M, Baig MS, Pathak B, Rani V, Akhtar J, Khan AA, Ahmad S, Krishnan A. Therapeutic Potential of Medicinal Plants against Dengue Infection: A Mechanistic Viewpoint. ACS OMEGA 2022; 7:24048-24065. [PMID: 35874231 PMCID: PMC9301714 DOI: 10.1021/acsomega.2c00625] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Dengue is a tropical disease caused by the Dengue virus (DENV), a positive-sense, single stranded RNA virus of the family Flaviviridae, which is transmitted by Aedes mosquitoes. The occurrence of dengue has grown dramatically around the globe in recent decades, and it is rapidly becoming a global burden. Furthermore, all four DENV serotypes cocirculate and create a problematic hyperendemic situation. Characteristic symptoms range from being asymptomatic, dengue fever to life-threatening complications such as hemorrhagic fever and shock. Apart from the inherent virulence of the virus strain, a dysregulated host immune response makes the condition worse. Currently, there is no highly recommended vaccine or therapeutic agent against dengue. With the advent of virus strains resistant to antiviral agents, there is a constant need for new therapies to be developed. Since time immemorial, human civilization has utilized plants in traditional medicine to treat various diseases, including infectious viral diseases. With the advancement in molecular biology, cell biology techniques, and bioinformatics, recent studies have tried to provide scientific evidence and determine the mechanism of anti-dengue activity of various plant extracts and plant-derived agents. The current Review consolidates the studies on the last 20 years of in vitro and in vivo experiments on the ethnomedicinal plants used against the dengue virus. Several active phytoconstituents like quercetin, castanospermine, α-mangostin, schisandrin-A, hirsutin have been found to be promising to inhibition of all the four DENV serotypes. However, novel therapeutics need to be reassessed in relevant cells using high-throughput techniques. Further, in vivo dose optimization for the immunomodulatory and antiviral activity should be examined on a vast sample size. Such a Review should help take the knowledge forward, validate it, and use medicinal plants in different combinations targeting multiple stages of virus infection for more effective multipronged therapy against dengue infection.
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Affiliation(s)
- Mohammad Altamish
- Department
of Pharmacology School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Muzayyana Khan
- Bioactive
Natural Product Laboratory, School of Pharmaceutical Education and
Research, Jamia Hamdard, New Delhi, 110062, India
| | - Mirza Sarwar Baig
- Department
of Molecular Medicine, School of Interdisciplinary Sciences &
Technology, Jamia Hamdard, New Delhi-110062 India
| | - Bharti Pathak
- Department
of Molecular Medicine, School of Interdisciplinary Sciences &
Technology, Jamia Hamdard, New Delhi-110062 India
| | - Veena Rani
- Department
of SciencesIndira Gandhi National Open University
(IGNOU), New Delhi, 110068, India
| | - Jamal Akhtar
- Central
Council for Research in Unani Medicine, Ministry of AYUSH, Government
of India, New Delhi, 110058, India
| | - A. Ali Khan
- Central
Council for Research in Unani Medicine, Ministry of AYUSH, Government
of India, New Delhi, 110058, India
| | - Sayeed Ahmad
- Bioactive
Natural Product Laboratory, School of Pharmaceutical Education and
Research, Jamia Hamdard, New Delhi, 110062, India
| | - Anuja Krishnan
- Department
of Molecular Medicine, School of Interdisciplinary Sciences &
Technology, Jamia Hamdard, New Delhi-110062 India
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30
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Poltep K, Phadungsombat J, Nakayama EE, Kosoltanapiwat N, Hanboonkunupakarn B, Wiriyarat W, Shioda T, Leaungwutiwong P. Genetic Diversity of Dengue Virus in Clinical Specimens from Bangkok, Thailand, during 2018-2020: Co-Circulation of All Four Serotypes with Multiple Genotypes and/or Clades. Trop Med Infect Dis 2021; 6:tropicalmed6030162. [PMID: 34564546 PMCID: PMC8482112 DOI: 10.3390/tropicalmed6030162] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 11/16/2022] Open
Abstract
Dengue is an arboviral disease highly endemic in Bangkok, Thailand. To characterize the current genetic diversity of dengue virus (DENV), we recruited patients with suspected DENV infection at the Hospital for Tropical Diseases, Bangkok, during 2018-2020. We determined complete nucleotide sequences of the DENV envelope region for 111 of 276 participant serum samples. All four DENV serotypes were detected, with the highest proportion being DENV-1. Although all DENV-1 sequences were genotype I, our DENV-1 sequences were divided into four distinct clades with different distributions in Asian countries. Two genotypes of DENV-2 were identified, Asian I and Cosmopolitan, which were further divided into two and three distinct clades, respectively. In DENV-3, in addition to the previously dominant genotype III, a cluster of 6 genotype I viruses only rarely reported in Thailand was also observed. All of the DENV-4 viruses belonged to genotype I, but they were separated into three distinct clades. These results indicated that all four serotypes of DENV with multiple genotypes and/or clades co-circulate in Bangkok. Continuous investigation of DENV is warranted to further determine the relationship between DENV within Thailand and neighboring countries in Southeast Asia and Asia.
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Affiliation(s)
- Kanaporn Poltep
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (K.P.); (N.K.)
- Mahidol-Osaka Center for Infectious Diseases (MOCID), Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (J.P.); (E.E.N.)
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Faculty of Veterinary Science, Mahidol University, Nakhon Pathom 73170, Thailand;
| | - Juthamas Phadungsombat
- Mahidol-Osaka Center for Infectious Diseases (MOCID), Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (J.P.); (E.E.N.)
- Department of Viral Infections, Research Institute for Microbial Diseases (RIMD), Osaka University, Osaka 565-0871, Japan
| | - Emi E. Nakayama
- Mahidol-Osaka Center for Infectious Diseases (MOCID), Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (J.P.); (E.E.N.)
- Department of Viral Infections, Research Institute for Microbial Diseases (RIMD), Osaka University, Osaka 565-0871, Japan
| | - Nathamon Kosoltanapiwat
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (K.P.); (N.K.)
| | - Borimas Hanboonkunupakarn
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand;
| | - Witthawat Wiriyarat
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Faculty of Veterinary Science, Mahidol University, Nakhon Pathom 73170, Thailand;
| | - Tatsuo Shioda
- Mahidol-Osaka Center for Infectious Diseases (MOCID), Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (J.P.); (E.E.N.)
- Department of Viral Infections, Research Institute for Microbial Diseases (RIMD), Osaka University, Osaka 565-0871, Japan
- Correspondence: (T.S.); (P.L.)
| | - Pornsawan Leaungwutiwong
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (K.P.); (N.K.)
- Correspondence: (T.S.); (P.L.)
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