1
|
Maraschin M, Talyuli OAC, Luíza Rulff da Costa C, Granella LW, Moi DA, Figueiredo BRS, Mansur DS, Oliveira PL, Oliveira JHM. Exploring dose-response relationships in Aedes aegypti survival upon bacteria and arbovirus infection. JOURNAL OF INSECT PHYSIOLOGY 2023; 151:104573. [PMID: 37838284 DOI: 10.1016/j.jinsphys.2023.104573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 10/16/2023]
Abstract
A detailed understanding of how host fitness changes in response to variations in microbe density (an ecological measure of disease tolerance) is an important aim of infection biology. Here, we applied dose-response curves to study Aedes aegypti survival upon exposure to different microbes. We challenged female mosquitoes with Listeria monocytogenes, a model bacterial pathogen, Dengue 4 virus and Zika virus, two medically relevant arboviruses, to understand the distribution of mosquito survival following microbe exposure. By correlating microbe loads and host health, we found that a blood meal promotes disease tolerance in our systemic bacterial infection model and that mosquitoes orally infected with bacteria had an enhanced defensive capacity than insects infected through injection. We also showed that Aedes aegypti displays a higher survival profile following arbovirus infection when compared to bacterial infections. Here, we applied a framework for investigating microbe-induced mosquito mortality and details how the lifespan of Aedes aegypti varies with different inoculum sizes of bacteria and arboviruses.
Collapse
Affiliation(s)
- Mariana Maraschin
- Departamento de Microbiologia, Imunologia e Parasitologia. Universidade Federal de Santa Catarina. Florianópolis, Brazil
| | - Octávio A C Talyuli
- Instituto de Bioquímica Médica Leopoldo de Meis. Universidade Federal do Rio de Janeiro. Rio de Janeiro, Brazil
| | - Clara Luíza Rulff da Costa
- Instituto de Bioquímica Médica Leopoldo de Meis. Universidade Federal do Rio de Janeiro. Rio de Janeiro, Brazil
| | - Lucilene W Granella
- Departamento de Microbiologia, Imunologia e Parasitologia. Universidade Federal de Santa Catarina. Florianópolis, Brazil
| | - Dieison A Moi
- Laboratory of Multitrophic Interactions and Biodiversity, Department of Animal Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP 13083-862, Brazil
| | - Bruno R S Figueiredo
- Graduate Program in Ecology, Department of Ecology and Zoology, Federal University of Santa Catarina, Campus Universitário, Edifício Fritz Müller, Bloco B, Córrego Grande, CEP 88040-970, Florianópolis, Santa Catarina, Brazil
| | - Daniel S Mansur
- Departamento de Microbiologia, Imunologia e Parasitologia. Universidade Federal de Santa Catarina. Florianópolis, Brazil
| | - Pedro L Oliveira
- Instituto de Bioquímica Médica Leopoldo de Meis. Universidade Federal do Rio de Janeiro. Rio de Janeiro, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Brazil
| | - José Henrique M Oliveira
- Departamento de Microbiologia, Imunologia e Parasitologia. Universidade Federal de Santa Catarina. Florianópolis, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular. Brazil.
| |
Collapse
|
2
|
de Arruda TB, Bavia L, Mosimann ALP, Aoki MN, Sarzi ML, Conchon-Costa I, Wowk PF, Duarte dos Santos CN, Pavanelli WR, Silveira GF, Bordignon J. Viremia and Inflammatory Cytokines in Dengue: Interleukin-2 as a Biomarker of Infection, and Interferon-α and -γ as Markers of Primary versus Secondary Infection. Pathogens 2023; 12:1362. [PMID: 38003826 PMCID: PMC10675515 DOI: 10.3390/pathogens12111362] [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: 08/31/2023] [Revised: 10/26/2023] [Accepted: 11/01/2023] [Indexed: 11/26/2023] Open
Abstract
The pathogenesis of Dengue virus (DENV) infection is complex and involves viral replication that may trigger an inflammatory response leading to severe disease. Here, we investigated the correlation between viremia and cytokine levels in the serum of DENV-infected patients. Between 2013 and 2014, 138 patients with a diagnosis of acute-phase DENV infection and 22 patients with a non-dengue acute febrile illness (AFI) were enrolled. Through a focus-forming assay (FFU), we determined the viremia levels in DENV-infected patients and observed a peak in the first two days after the onset of symptoms. A higher level of viremia was observed in primary versus secondary DENV-infected patients. Furthermore, no correlation was observed between viremia and inflammatory cytokine levels in DENV-infected patients. Receiver operating characteristic (ROC) curve analysis revealed that IL-2 has the potential to act as a marker to distinguish dengue from other febrile illnesses and is positively correlated with Th1 cytokines. IFN-α and IFN-γ appear to be potential markers of primary versus secondary infection in DENV-infected patients, respectively. The results also indicate that viremia levels are not the main driving force behind inflammation in dengue and that cytokines could be used as infection biomarkers and for differentiation between primary versus secondary infection.
Collapse
Affiliation(s)
- Thaís Bonato de Arruda
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fiocruz, Curitiba 81350-010, Paraná, Brazil; (T.B.d.A.); (A.L.P.M.)
| | - Lorena Bavia
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fiocruz, Curitiba 81350-010, Paraná, Brazil; (T.B.d.A.); (A.L.P.M.)
- Departamento de Biologia Celular, Setor de Ciências Biológicas, Universidade Federal do Paraná (UFPR), Curitiba 81531-980, Paraná, Brazil
| | - Ana Luiza Pamplona Mosimann
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fiocruz, Curitiba 81350-010, Paraná, Brazil; (T.B.d.A.); (A.L.P.M.)
| | - Mateus Nobrega Aoki
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fiocruz, Curitiba 81350-010, Paraná, Brazil; (T.B.d.A.); (A.L.P.M.)
- Laboratório de Ciências & Tecnologias Aplicadas a Saúde, Instituto Carlos Chagas, Fiocruz, Curitiba 81350-010, Paraná, Brazil
| | - Maria Lo Sarzi
- Secretaria Municipal de Saúde de Cambé, Cambé 86057-970, Paraná, Brazil
| | - Ivete Conchon-Costa
- Laboratório de Protozoologia Experimental, Universidade Estadual de Londrina, Londrina 86057-970, Paraná, Brazil (W.R.P.)
| | - Pryscilla Fanini Wowk
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fiocruz, Curitiba 81350-010, Paraná, Brazil; (T.B.d.A.); (A.L.P.M.)
| | - Claudia Nunes Duarte dos Santos
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fiocruz, Curitiba 81350-010, Paraná, Brazil; (T.B.d.A.); (A.L.P.M.)
| | - Wander Rogério Pavanelli
- Laboratório de Protozoologia Experimental, Universidade Estadual de Londrina, Londrina 86057-970, Paraná, Brazil (W.R.P.)
| | | | - Juliano Bordignon
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fiocruz, Curitiba 81350-010, Paraná, Brazil; (T.B.d.A.); (A.L.P.M.)
| |
Collapse
|
3
|
Ricciardi-Jorge T, da Rocha EL, Gonzalez-Kozlova E, Rodrigues-Luiz GF, Ferguson BJ, Sweeney T, Irigoyen N, Mansur DS. PKR-mediated stress response enhances dengue and Zika virus replication. mBio 2023; 14:e0093423. [PMID: 37732809 PMCID: PMC10653888 DOI: 10.1128/mbio.00934-23] [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: 05/22/2023] [Accepted: 08/01/2023] [Indexed: 09/22/2023] Open
Abstract
IMPORTANCE One of the fundamental features that make viruses intracellular parasites is the necessity to use cellular translational machinery. Hence, this is a crucial checkpoint for controlling infections. Here, we show that dengue and Zika viruses, responsible for nearly 400 million infections every year worldwide, explore such control for optimal replication. Using immunocompetent cells, we demonstrate that arrest of protein translations happens after sensing of dsRNA and that the information required to avoid this blocking is contained in viral 5'-UTR. Our work, therefore, suggests that the non-canonical translation described for these viruses is engaged when the intracellular stress response is activated.
Collapse
Affiliation(s)
- Taissa Ricciardi-Jorge
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina (UFSC), Florianópolis, Brazil
- The Pirbright Institute, Woking, United Kingdom
| | - Edroaldo Lummertz da Rocha
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina (UFSC), Florianópolis, Brazil
| | - Edgar Gonzalez-Kozlova
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina (UFSC), Florianópolis, Brazil
- Icahn School of Medicine, New York, USA
| | - Gabriela Flavia Rodrigues-Luiz
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina (UFSC), Florianópolis, Brazil
| | - Brian J. Ferguson
- Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | | | - Nerea Irigoyen
- Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | - Daniel Santos Mansur
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina (UFSC), Florianópolis, Brazil
| |
Collapse
|
4
|
Sun L, Su Y, Jiao A, Wang X, Zhang B. T cells in health and disease. Signal Transduct Target Ther 2023; 8:235. [PMID: 37332039 PMCID: PMC10277291 DOI: 10.1038/s41392-023-01471-y] [Citation(s) in RCA: 123] [Impact Index Per Article: 123.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 06/20/2023] Open
Abstract
T cells are crucial for immune functions to maintain health and prevent disease. T cell development occurs in a stepwise process in the thymus and mainly generates CD4+ and CD8+ T cell subsets. Upon antigen stimulation, naïve T cells differentiate into CD4+ helper and CD8+ cytotoxic effector and memory cells, mediating direct killing, diverse immune regulatory function, and long-term protection. In response to acute and chronic infections and tumors, T cells adopt distinct differentiation trajectories and develop into a range of heterogeneous populations with various phenotype, differentiation potential, and functionality under precise and elaborate regulations of transcriptional and epigenetic programs. Abnormal T-cell immunity can initiate and promote the pathogenesis of autoimmune diseases. In this review, we summarize the current understanding of T cell development, CD4+ and CD8+ T cell classification, and differentiation in physiological settings. We further elaborate the heterogeneity, differentiation, functionality, and regulation network of CD4+ and CD8+ T cells in infectious disease, chronic infection and tumor, and autoimmune disease, highlighting the exhausted CD8+ T cell differentiation trajectory, CD4+ T cell helper function, T cell contributions to immunotherapy and autoimmune pathogenesis. We also discuss the development and function of γδ T cells in tissue surveillance, infection, and tumor immunity. Finally, we summarized current T-cell-based immunotherapies in both cancer and autoimmune diseases, with an emphasis on their clinical applications. A better understanding of T cell immunity provides insight into developing novel prophylactic and therapeutic strategies in human diseases.
Collapse
Affiliation(s)
- Lina Sun
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
- Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, China
- Xi'an Key Laboratory of Immune Related Diseases, Xi'an, Shannxi, 710061, China
| | - Yanhong Su
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
- Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, China
- Xi'an Key Laboratory of Immune Related Diseases, Xi'an, Shannxi, 710061, China
| | - Anjun Jiao
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
- Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, China
- Xi'an Key Laboratory of Immune Related Diseases, Xi'an, Shannxi, 710061, China
| | - Xin Wang
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
- Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, China
- Xi'an Key Laboratory of Immune Related Diseases, Xi'an, Shannxi, 710061, China
| | - Baojun Zhang
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China.
- Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, China.
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, China.
- Xi'an Key Laboratory of Immune Related Diseases, Xi'an, Shannxi, 710061, China.
| |
Collapse
|
5
|
Maeki T, Tajima S, Ando N, Wakimoto Y, Hayakawa K, Kutsuna S, Kato F, Taniguchi S, Nakayama E, Lim CK, Saijo M. Analysis of cross-reactivity among flaviviruses using sera of patients with dengue showed the importance of neutralization tests with paired serum samples for the correct interpretations of serological test results for dengue. J Infect Chemother 2023; 29:469-474. [PMID: 36702208 DOI: 10.1016/j.jiac.2023.01.015] [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: 10/27/2022] [Revised: 01/12/2023] [Accepted: 01/22/2023] [Indexed: 01/25/2023]
Abstract
Dengue is a febrile illness caused by the dengue virus (DENV) that belongs to the genus Flavivirus in the family Flaviviridae. Cross-reactivity between flaviviruses poses a challenge while interpreting serological test results. In the present study, the cross-reactivity of sera of the patients with dengue, who traveled from Japan to DENV-endemic countries, was analyzed by using an enzyme-linked immunosorbent assay (ELISA) and neutralization test (NT). Sixteen serum samples were collected from patients with dengue and were tested for: i) IgM antibodies against Zika virus (ZIKV), West Nile virus (WNV), Japanese encephalitis virus (JEV), and tick-borne encephalitis virus (TBEV) using IgM ELISA, ii) IgG antibody against TBEV using IgG ELISA, and iii) neutralizing antibody against ZIKV, WNV, TBEV, and JEV. Among the 16 samples tested using ELISA, seven samples were IgM-positive for at least one of the other flaviviruses, and nine samples were IgG-positive for TBEV. Neutralizing antibody titers (NATs) against ZIKV, WNV, and TBEV were one-fourth or lower than those against the causative DENV in all samples. The NATs against JEV were one-fourth or lower than those against the causative DENV in six convalescent-phase serum sample among the seven convalescent-phase serum samples. The NAT against DENV of the residual one convalescent-phase serum was similar to that against JEV and that against JEV of its relevant acute-phase serum sample. These results showed that NTs with paired serum samples are important to correctly interpret the serological test results for DENV.
Collapse
Affiliation(s)
- Takahiro Maeki
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan.
| | - Shigeru Tajima
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Naokatsu Ando
- National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo, 162-8655, Japan
| | - Yuji Wakimoto
- National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo, 162-8655, Japan
| | - Kayoko Hayakawa
- National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo, 162-8655, Japan
| | - Satoshi Kutsuna
- National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo, 162-8655, Japan
| | - Fumihiro Kato
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Satoshi Taniguchi
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Eri Nakayama
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| |
Collapse
|
6
|
Gowri Sankar S, Mowna Sundari T, Alwin Prem Anand A. Emergence of Dengue 4 as Dominant Serotype During 2017 Outbreak in South India and Associated Cytokine Expression Profile. Front Cell Infect Microbiol 2021; 11:681937. [PMID: 34447698 PMCID: PMC8382982 DOI: 10.3389/fcimb.2021.681937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 07/12/2021] [Indexed: 12/23/2022] Open
Abstract
Dengue virus (DENV) infection is prevalent in tropical and subtropical regions of the world, which is fatal if untreated symptomatically. Emergence of new genotype within serotypes led to enhanced severity. The objective of the study is to identify the molecular characteristics of the DENV circulated during 2017 outbreak in Tamil Nadu, India, and to investigate the role of inflammatory cytokines in different “serotypes” and in “dengue severity”. A total of 135 suspected samples were tested for DENV infection using IgM, IgG, and qPCR assay; where 76 samples were positive for DENV and analyzed for 12 inflammatory cytokines using ELISA. Serotyping shows 14 DENV-1, 22 DENV-2, 7 DENV-3, and 33 DENV-4, where DENV-4 was predominant. Among 76, 42 isolates were successfully sequenced for C-prM region and grouped. A lineage shift was observed in DENV-4 genotype. Irrespective of serotypes, IFNγ was significantly elevated in all serotypes than control as well as in primary infection than secondary, indicating its role in immune response. GM-CSF and IP-10 were significantly elevated in secondary infection and could be used as prognostic biomarkers for secondary infection. Our observation shows differential cytokine expression profile varied with each serotype, indicating serotype/genotype-specific viral proteins might play a major role in dengue severity. DENV-4 as dominant serotype was reported in Tamil Nadu for the first time during an outbreak with a mixed Th1/Th17 cytokine expression profile that correlated with disease severity. We conclude it is essential to identify circulating viral genotype and their fitness by mutational analysis to correlate with disease severity and immune status, as this correlation will be helpful in diagnostics and therapeutics applications.
Collapse
Affiliation(s)
- S Gowri Sankar
- Department of Molecular Biology, Indian Council of Medical Research (ICMR)-Vector Control Research Center - Field Station, Madurai, India
| | - T Mowna Sundari
- Department of Biotechnology - Bioinformatics Infrastructure Facilities (DBT-BIF) Centre (Under DBT Biotechnology Information System Network (BTISNet) Scheme), Lady Doak College, Madurai, India.,Department of Biotechnology, Lady Doak College, Madurai, India
| | - A Alwin Prem Anand
- Institute of Clinical Anatomy and Cell Analysis, University of Tuebingen, Tuebingen, Germany
| |
Collapse
|
7
|
Bezerra JMT, Sousa SCD, Tauil PL, Carneiro M, Barbosa DS. Entry of dengue virus serotypes and their geographic distribution in Brazilian federative units: a systematic review. REVISTA BRASILEIRA DE EPIDEMIOLOGIA 2021; 24:e210020. [PMID: 33825776 DOI: 10.1590/1980-549720210020] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 11/09/2020] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE To describe the entry of Dengue virus (DENV) serotypes in Brazil and its federative units. METHODS A systematic review of studies published between 1980 and 2018 in databases and in the gray literature was performed using descriptors related to the years of entry of the DENV serotypes. Additionally, experts and official sources of information (Brazilian Ministry of Health) were consulted. RESULTS From 100 publications selected for the systematic review, 26 addressed the entry of DENV serotypes in the North region of the country, 33 in the Northeast, 24 in the Southeast, 14 in the Central-West, and five in the South. DENV-1 and DENV-4 were introduced in the North region in 1981. DENV-2 was introduced in the Southeast in 1990. DENV-3 was introduced in the North in 1999. CONCLUSION The rapid expansion of dengue throughout the Brazilian territory was verified from the second half of the 1980s, with the gradual entry of the four serotypes, which resulted in the emergence of epidemics of arbovirus, which are currently verified in the country. Considering the epidemiology of the disease, more information should be disseminated and published in the wide-ranging scientific literature for a better understanding of the spread and circulation of DENV serotypes.
Collapse
Affiliation(s)
| | - Selma Costa de Sousa
- Department of Occupational Health Care, Universidade Federal de Minas Gerais - Belo Horizonte (MG), Brazil.,Laboratory of Epidemiology of Infectious and Parasitic Diseases, Department of Parasitology, Biological Sciences Institute, Universidade Federal de Minas Gerais - Belo Horizonte (MG), Brazil
| | - Pedro Luiz Tauil
- School of Medicine, Graduate Program in Tropical Medicine, Universidade de Brasília - Brasília (DF), Brazil
| | - Mariângela Carneiro
- Laboratory of Epidemiology of Infectious and Parasitic Diseases, Department of Parasitology, Biological Sciences Institute, Universidade Federal de Minas Gerais - Belo Horizonte (MG), Brazil.,Graduate Program in Health Sciences, Infectious Disease and Tropical Medicine, Universidade Federal de Minas Gerais - Belo Horizonte (MG), Brazil
| | - David Soeiro Barbosa
- Laboratory of Epidemiology of Infectious and Parasitic Diseases, Department of Parasitology, Biological Sciences Institute, Universidade Federal de Minas Gerais - Belo Horizonte (MG), Brazil
| |
Collapse
|
8
|
Bonezi V, Cataneo AHD, Branquinho MSF, Silva MBB, Gonzalez-Dias P, Pereira SS, Ferreira LCDS, Nakaya HI, Campa A, Wowk PF, Silveira ELV. Flavivirus-Mediating B Cell Differentiation Into Antibody-Secreting Cells in Humans Is Associated With the Activation of the Tryptophan Metabolism. Front Immunol 2020; 11:20. [PMID: 32117223 PMCID: PMC7026258 DOI: 10.3389/fimmu.2020.00020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 01/07/2020] [Indexed: 12/12/2022] Open
Abstract
Patients infected with the Dengue virus (DENV) often present with a massive generation of DENV-specific antibody-secreting cells (ASCs) in the blood. In some cases, these ASCs represent more than 50% of the circulating B cells, a higher magnitude than those induced by other infections, vaccinations, and plasma cell lymphomas. However, it remains unclear how the DENV infection elicits this colossal response. To address this issue, we utilised an in vitro strategy to induce human PBMCs of healthy individuals incubated with DENV particles (DENV4 TVP/360) to differentiate into ASCs. As controls, PBMCs were incubated with a mitogen cocktail or supernatants of uninfected C6/36 cells (mock). The ASC phenotype and function were increasingly detected in the DENV and mitogen-cultured PBMCs as compared to mock-treated cells. In contrast to the in vivo condition, secreted IgG derived from the PBMC-DENV culture was not DENV-specific. Lower ASC numbers were observed when inactivated viral particles or purified B cells were added to the cultures. The physical contact was essential between B cells and the remaining PBMCs for the DENV-mediated ASC response. Considering the evidence for the activation of the tryptophan metabolism detected in the serum of Dengue patients, we assessed its relevance in the DENV-mediated ASC differentiation. For this, tryptophan and its respective metabolites were quantified in the supernatants of cell cultures through mass spectrophotometry. Tryptophan depletion and kynurenine accumulation were found in the supernatants of PBMC-DENV cultures, which presented enhanced detection of indoleamine 2,3-dioxygenase 1 and 2 transcripts as compared to controls. In PBMC-DENV cultures, tryptophan and kynurenine levels strongly correlated to the respective ASC numbers, while the kynurenine levels were directly proportional to the secreted IgG titers. Contrastingly, PBMCs incubated with Zika or attenuated Yellow Fever viruses showed no correlation between their kynurenine concentrations and ASC numbers. Therefore, our data revealed the existence of distinct pathways for the DENV-mediated ASC differentiation and suggest the involvement of the tryptophan metabolism in this cellular process triggered by flavivirus infections.
Collapse
Affiliation(s)
- Vivian Bonezi
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Allan H D Cataneo
- Laboratório de Virologia Molecular, Instituto Carlos Chagas (ICC/Fiocruz Paraná), Curitiba, Brazil
| | - Maryana S F Branquinho
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Maysa B B Silva
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Patricia Gonzalez-Dias
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.,Scientific Platform Pasteur, University of São Paulo, São Paulo, Brazil
| | - Samuel S Pereira
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Luís C de Souza Ferreira
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Helder I Nakaya
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.,Scientific Platform Pasteur, University of São Paulo, São Paulo, Brazil
| | - Ana Campa
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Pryscilla F Wowk
- Laboratório de Virologia Molecular, Instituto Carlos Chagas (ICC/Fiocruz Paraná), Curitiba, Brazil
| | - Eduardo L V Silveira
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| |
Collapse
|
9
|
Bavia L, Melanda FN, de Arruda TB, Mosimann ALP, Silveira GF, Aoki MN, Kuczera D, Sarzi ML, Junior WLC, Conchon-Costa I, Pavanelli WR, Duarte Dos Santos CN, Barreto RC, Bordignon J. Epidemiological study on dengue in southern Brazil under the perspective of climate and poverty. Sci Rep 2020; 10:2127. [PMID: 32034173 PMCID: PMC7005746 DOI: 10.1038/s41598-020-58542-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 01/13/2020] [Indexed: 11/09/2022] Open
Abstract
Social and epidemiological aspects of dengue were evaluated in an important metropolitan area in southern Brazil, from August 2012 to September 2014. Demographic, clinical, serological data were collected from patients with acute dengue symptoms treated at public health system units (HSUs). A systematic approach to analyze the spatial and temporal distribution of cases was developed, considering the temporal cross-correlation between dengue and weather, and the spatial correlation between dengue and income over the city's census tracts. From the 878 patients with suggestive symptoms, 249 were diagnosed as positive dengue infection (28%). Considering the most statistically significant census tracts, a negative correlation was found between mean income and dengue (r = -0.65; p = 0.02; 95% CI: -0.03 to -0.91). The occurrence of dengue followed a seasonal distribution, and it was found to be three and four months delayed in relation to precipitation and temperature, respectively. Unexpectedly, the occurrence of symptomatic patients without dengue infection followed the same seasonal distribution, however its spatial distribution did not correlate with income. Through this methodology, we have found evidence that suggests a relation between dengue and poverty, which enriches the debate in the literature and sheds light on an extremely relevant socioeconomic and public health issue.
Collapse
Affiliation(s)
- Lorena Bavia
- Setor de Ciências da Saúde, Hospital de Clínicas, UFPR, Curitiba, 80060-900, Brazil
| | - Francine Nesello Melanda
- Laboratório de Parasitologia Experimental, Departamento de Ciências Patológicas, UEL, Londrina, 86057-970, Brazil
| | - Thais Bonato de Arruda
- Laboratório de Virologia Molecular do Instituto Carlos Chagas, ICC/Fiocruz/PR, Curitiba, 81350-010, Brazil
| | | | | | - Mateus Nóbrega Aoki
- Laboratório de Ciências e Tecnologias Aplicadas em Saúde do Instituto Carlos Chagas, ICC/Fiocruz/PR, Curitiba, 81350-010, Brazil
| | - Diogo Kuczera
- Laboratório de Virologia Molecular do Instituto Carlos Chagas, ICC/Fiocruz/PR, Curitiba, 81350-010, Brazil
| | - Maria Lo Sarzi
- Secretaria Municipal de Saúde de Cambé, Cambé, 86181-300, Brazil
| | | | - Ivete Conchon-Costa
- Laboratório de Parasitologia Experimental, Departamento de Ciências Patológicas, UEL, Londrina, 86057-970, Brazil
| | - Wander Rogério Pavanelli
- Laboratório de Parasitologia Experimental, Departamento de Ciências Patológicas, UEL, Londrina, 86057-970, Brazil
| | | | | | - Juliano Bordignon
- Laboratório de Virologia Molecular do Instituto Carlos Chagas, ICC/Fiocruz/PR, Curitiba, 81350-010, Brazil.
| |
Collapse
|
10
|
Maeki T, Tajima S, Ikeda M, Kato F, Taniguchi S, Nakayama E, Takasaki T, Lim CK, Saijo M. Analysis of cross-reactivity between flaviviruses with sera of patients with Japanese encephalitis showed the importance of neutralization tests for the diagnosis of Japanese encephalitis. J Infect Chemother 2019; 25:786-790. [PMID: 31105002 DOI: 10.1016/j.jiac.2019.04.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 01/23/2019] [Accepted: 04/09/2019] [Indexed: 12/21/2022]
Abstract
Japanese encephalitis (JE) is one of the most important viral encephalitis in Asia. JE is caused by the Japanese encephalitis virus (JEV), which belongs to the genus Flavivirus, family Flaviviridae. The diagnosis of JE is usually based on serological assays, and it has been reported that cross-reactivity between flaviviruses has complicated the interpretations of results from serological assays. Therefore, analysis of the cross-reactivity is an important subject for serological diagnosis of JE and other diseases caused by flaviviruses. In the present study, the cross-reactivity of the sera of patients with JE to other flaviviruses was analyzed using enzyme-linked immunosorbent assay (ELISA) and neutralization tests. Sixteen serum samples were collected from patients with JE and were tested for: i) IgM antibody against West Nile virus (WNV), dengue virus (DENV), zika virus (ZIKV), and tick-borne encephalitis virus (TBEV) using IgM-ELISA, ii) IgG antibody against DENV and TBEV using IgG-ELISA, and iii) neutralization tests with DENV 1-4, ZIKV, TBEV, and WNV. Out of the 16 samples tested using ELISA, 11 and 14 samples were positive for IgM and IgG, respectively, against at least one of the other flaviviruses. In neutralization tests, neutralizing potency against DENV, ZIKV, or TBEV was not detected in any samples. Although 13 samples showed neutralizing potency against WNV, their neutralizing antibody titers were equal to or less than one-eighth of those against JEV. These results show that neutralization tests are more specific than ELISA, indicating the importance of the neutralization tests in the diagnosis of JE.
Collapse
Affiliation(s)
- Takahiro Maeki
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan.
| | - Shigeru Tajima
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Makiko Ikeda
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Fumihiro Kato
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Satoshi Taniguchi
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Eri Nakayama
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Tomohiko Takasaki
- Kanagawa Prefectural Institute of Public Health, 1-3-1 Shimomachiya, Chigasaki, Kanagawa 253-0087, Japan
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| |
Collapse
|
11
|
Doratoxylon apetalum, an Indigenous Medicinal Plant from Mascarene Islands, Is a Potent Inhibitor of Zika and Dengue Virus Infection in Human Cells. Int J Mol Sci 2019; 20:ijms20102382. [PMID: 31091703 PMCID: PMC6567149 DOI: 10.3390/ijms20102382] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/10/2019] [Accepted: 05/12/2019] [Indexed: 02/06/2023] Open
Abstract
Zika virus (ZIKV) and Dengue virus (DENV) are mosquito-borne viruses of the Flavivirus genus that could cause congenital microcephaly and hemorrhage, respectively, in humans, and thus present a risk to global public health. A preventive vaccine against ZIKV remains unavailable, and no specific antiviral drugs against ZIKV and DENV are licensed. Medicinal plants may be a source of natural antiviral drugs which mostly target viral entry. In this study, we evaluate the antiviral activity of Doratoxylum apetalum, an indigenous medicinal plant from the Mascarene Islands, against ZIKV and DENV infection. Our data indicated that D. apetalum exhibited potent antiviral activity against a contemporary epidemic strain of ZIKV and clinical isolates of four DENV serotypes at non-cytotoxic concentrations in human cells. Time-of-drug-addition assays revealed that D. apetalum extract acts on ZIKV entry by preventing the internalisation of virus particles into the host cells. Our data suggest that D. apetalum-mediated ZIKV inhibition relates to virus particle inactivation. We suggest that D. apetalum could be a promising natural source for the development of potential antivirals against medically important flaviviruses.
Collapse
|
12
|
Mosimann ALP, de Siqueira MK, Ceole LF, Nunes Duarte Dos Santos C. A new Aura virus isolate in Brazil shows segment duplication in the variable region of the nsP3 gene. Parasit Vectors 2018; 11:321. [PMID: 29843810 PMCID: PMC5975265 DOI: 10.1186/s13071-018-2907-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 05/20/2018] [Indexed: 12/03/2022] Open
Abstract
Background A new isolate of Aura virus serendipitously discovered as a cell culture contaminant is reported in this manuscript. Aura virus belongs to the family Togaviridae and is classified in the genus Alphavirus. There are only two reports of Aura virus isolation from mosquitoes in the scientific literature, and the existence of a vertebrate host is still unknown. The discovery of this new isolate was based on transmission electron microscopy and nucleic acid amplification through a non-specific RT-PCR amplification protocol followed by sequencing. Results Genetic analysis has shown that the new virus shares a high degree of identity with the previously described isolate (GenBank: AF126284.1). A major difference was observed in the nsP3 gene in which a 234-nucleotide duplication has been identified. Furthermore, a pronounced difference was observed in cell cultures compared to the data available for the previously described isolate. Cell permissiveness and phenotypic characteristics in C6/36, Vero and BHK-21 cells were found to differ from previous reports. This may be due to the genetic differences that have been observed. Conclusions The genetic and biological characteristics of the new Aura virus isolate are suggestive of viral adaptation to the cell substrate. The development of a cDNA clone will lend a perspective and better understanding of these results as well as open avenues for its use as a biotechnological tool, as seen for other alphaviruses. Electronic supplementary material The online version of this article (10.1186/s13071-018-2907-4) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Ana Luiza Pamplona Mosimann
- Laboratory of Molecular Virology, Instituto Carlos Chagas, FIOCRUZ, Rua Prof. Algacyr Munhoz Mader 3775, Cidade Industrial, Curitiba, PR, 81350-010, Brazil
| | - Mirian Krystel de Siqueira
- Laboratory of Molecular Virology, Instituto Carlos Chagas, FIOCRUZ, Rua Prof. Algacyr Munhoz Mader 3775, Cidade Industrial, Curitiba, PR, 81350-010, Brazil.,Present Address: Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas, Campinas, SP, 13083-970, Brazil
| | - Ligia Fernanda Ceole
- Laboratory of Cell Biology, Instituto Carlos Chagas, FIOCRUZ, Rua Prof. Algacyr Munhoz Mader 3775, Cidade Industrial, Curitiba, PR, 81350-010, Brazil
| | - Claudia Nunes Duarte Dos Santos
- Laboratory of Molecular Virology, Instituto Carlos Chagas, FIOCRUZ, Rua Prof. Algacyr Munhoz Mader 3775, Cidade Industrial, Curitiba, PR, 81350-010, Brazil.
| |
Collapse
|
13
|
Abstract
Dengue virus (DV) infection can cause either a self-limiting flu-like disease or a threatening hemorrhage that may evolve to shock and death. A variety of cell types, such as dendritic cells, monocytes, and B cells, can be infected by DV. However, despite the role of T lymphocytes in the control of DV replication, there remains a paucity of information on possible DV-T cell interactions during the disease course. In the present study, we have demonstrated that primary human naive CD4+ and CD8+ T cells are permissive for DV infection. Importantly, both T cell subtypes support viral replication and secrete viable virus particles. DV infection triggers the activation of both CD4+ and CD8+ T lymphocytes, but preactivation of T cells reduces the susceptibility of T cells to DV infection. Interestingly, the cytotoxicity-inducing protein granzyme A is highly secreted by human CD4+ but not CD8+ T cells after exposure to DV in vitro Additionally, using annexin V and polycaspase assays, we have demonstrated that T lymphocytes, in contrast to monocytes, are resistant to DV-induced apoptosis. Strikingly, both CD4+ and CD8+ T cells were found to be infected with DV in acutely infected dengue patients. Together, these results show that T cells are permissive for DV infection in vitro and in vivo, suggesting that this cell population may be a viral reservoir during the acute phase of the disease.IMPORTANCE Infection by dengue virus (DV) causes a flu-like disease that can evolve to severe hemorrhaging and death. T lymphocytes are important cells that regulate antibody secretion by B cells and trigger the death of infected cells. However, little is known about the direct interaction between DV and T lymphocytes. Here, we show that T lymphocytes from healthy donors are susceptible to infection by DV, leading to cell activation. Additionally, T cells seem to be resistant to DV-induced apoptosis, suggesting a potential role as a viral reservoir in humans. Finally, we show that both CD4+ and CD8+ T lymphocytes from acutely infected DV patients are infected by DV. Our results raise new questions about DV pathogenesis and vaccine development.
Collapse
|
14
|
Fusco DN, Pratt H, Kandilas S, Cheon SSY, Lin W, Cronkite DA, Basavappa M, Jeffrey KL, Anselmo A, Sadreyev R, Yapp C, Shi X, O'Sullivan JF, Gerszten RE, Tomaru T, Yoshino S, Satoh T, Chung RT. HELZ2 Is an IFN Effector Mediating Suppression of Dengue Virus. Front Microbiol 2017; 8:240. [PMID: 28265266 PMCID: PMC5316548 DOI: 10.3389/fmicb.2017.00240] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 02/03/2017] [Indexed: 01/07/2023] Open
Abstract
Flaviviral infections including dengue virus are an increasing clinical problem worldwide. Dengue infection triggers host production of the type 1 IFN, IFN alpha, one of the strongest and broadest acting antivirals known. However, dengue virus subverts host IFN signaling at early steps of IFN signal transduction. This subversion allows unbridled viral replication which subsequently triggers ongoing production of IFN which, again, is subverted. Identification of downstream IFN antiviral effectors will provide targets which could be activated to restore broad acting antiviral activity, stopping the signal to produce endogenous IFN at toxic levels. To this end, we performed a targeted functional genomic screen for IFN antiviral effector genes (IEGs), identifying 56 IEGs required for antiviral effects of IFN against fully infectious dengue virus. Dengue IEGs were enriched for genes encoding nuclear receptor interacting proteins, including HELZ2, MAP2K4, SLC27A2, HSP90AA1, and HSP90AB1. We focused on HELZ2 (Helicase With Zinc Finger 2), an IFN stimulated gene and IEG which encodes a promiscuous nuclear factor coactivator that exists in two isoforms. The two unique HELZ2 isoforms are both IFN responsive, contain ISRE elements, and gene products increase in the nucleus upon IFN stimulation. Chromatin immunoprecipitation-sequencing revealed that the HELZ2 complex interacts with triglyceride-regulator LMF1. Mass spectrometry revealed that HELZ2 knockdown cells are depleted of triglyceride subsets. We thus sought to determine whether HELZ2 interacts with a nuclear receptor known to regulate immune response and lipid metabolism, AHR, and identified HELZ2:AHR interactions via co-immunoprecipitation, found that AHR is a dengue IEG, and that an AHR ligand, FICZ, exhibits anti-dengue activity. Primary bone marrow derived macrophages from HELZ2 knockout mice, compared to wild type controls, exhibit enhanced dengue infectivity. Overall, these findings reveal that IFN antiviral response is mediated by HELZ2 transcriptional upregulation, enrichment of HELZ2 protein levels in the nucleus, and activation of a transcriptional program that appears to modulate intracellular lipid state. IEGs identified in this study may serve as both (1) potential targets for host directed antiviral design, downstream of the common flaviviral subversion point, as well as (2) possible biomarkers, whose variation, natural, or iatrogenic, could affect host response to viral infections.
Collapse
Affiliation(s)
- Dahlene N. Fusco
- Gastrointestinal Division, Department of Medicine, Massachusetts General HospitalBoston, MA, USA
- Division of Infectious Diseases, Vaccine and Immunotherapy Center, Department of Medicine, Massachusetts General HospitalBoston, MA, USA
- Laboratory for Systems Pharmacology, Harvard Medical SchoolBoston, MA, USA
| | - Henry Pratt
- Gastrointestinal Division, Department of Medicine, Massachusetts General HospitalBoston, MA, USA
| | - Stephen Kandilas
- Division of Infectious Diseases, Vaccine and Immunotherapy Center, Department of Medicine, Massachusetts General HospitalBoston, MA, USA
- Department of Medicine, Athens University Medical SchoolAthens, Greece
| | | | - Wenyu Lin
- Gastrointestinal Division, Department of Medicine, Massachusetts General HospitalBoston, MA, USA
| | - D. Alex Cronkite
- Gastrointestinal Division, Department of Medicine, Massachusetts General HospitalBoston, MA, USA
| | - Megha Basavappa
- Gastrointestinal Division, Department of Medicine, Massachusetts General HospitalBoston, MA, USA
| | - Kate L. Jeffrey
- Gastrointestinal Division, Department of Medicine, Massachusetts General HospitalBoston, MA, USA
| | - Anthony Anselmo
- Department of Molecular Biology, Massachusetts General HospitalBoston, MA, USA
| | - Ruslan Sadreyev
- Department of Molecular Biology, Massachusetts General HospitalBoston, MA, USA
| | - Clarence Yapp
- Laboratory for Systems Pharmacology, Harvard Medical SchoolBoston, MA, USA
| | - Xu Shi
- Division of Cardiology, Department of Medicine, Beth Israel Deaconess Medical CenterBoston, MA, USA
| | - John F. O'Sullivan
- Division of Cardiology, Department of Medicine, Massachusetts General HospitalBoston, MA, USA
| | - Robert E. Gerszten
- Division of Cardiology, Department of Medicine, Beth Israel Deaconess Medical CenterBoston, MA, USA
- Division of Cardiology, Department of Medicine, Massachusetts General HospitalBoston, MA, USA
| | - Takuya Tomaru
- Department of Medicine and Molecular Science, Gunma University Graduate School of MedicineMaebashi, Japan
| | - Satoshi Yoshino
- Department of Medicine and Molecular Science, Gunma University Graduate School of MedicineMaebashi, Japan
| | - Tetsurou Satoh
- Department of Medicine and Molecular Science, Gunma University Graduate School of MedicineMaebashi, Japan
| | - Raymond T. Chung
- Gastrointestinal Division, Department of Medicine, Massachusetts General HospitalBoston, MA, USA
| |
Collapse
|
15
|
Frabasile S, Koishi AC, Kuczera D, Silveira GF, Verri WA, Duarte dos Santos CN, Bordignon J. The citrus flavanone naringenin impairs dengue virus replication in human cells. Sci Rep 2017; 7:41864. [PMID: 28157234 PMCID: PMC5291091 DOI: 10.1038/srep41864] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 01/04/2017] [Indexed: 02/02/2023] Open
Abstract
Dengue is one of the most significant health problems in tropical and sub-tropical regions throughout the world. Nearly 390 million cases are reported each year. Although a vaccine was recently approved in certain countries, an anti-dengue virus drug is still needed. Fruits and vegetables may be sources of compounds with medicinal properties, such as flavonoids. This study demonstrates the anti-dengue virus activity of the citrus flavanone naringenin, a class of flavonoid. Naringenin prevented infection with four dengue virus serotypes in Huh7.5 cells. Additionally, experiments employing subgenomic RepDV-1 and RepDV-3 replicon systems confirmed the ability of naringenin to inhibit dengue virus replication. Antiviral activity was observed even when naringenin was used to treat Huh7.5 cells 24 h after dengue virus exposure. Finally, naringenin anti-dengue virus activity was demonstrated in primary human monocytes infected with dengue virus sertoype-4, supporting the potential use of naringenin to control dengue virus replication. In conclusion, naringenin is a suitable candidate molecule for the development of specific dengue virus treatments.
Collapse
Affiliation(s)
- Sandra Frabasile
- Sección Virologia, Facultad de Ciencias, Universidad de La República, 11400, Montevideo, Uruguay
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, ICC/FIOCRUZ/PR, Curitiba, Paraná, Brazil
| | - Andrea Cristine Koishi
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, ICC/FIOCRUZ/PR, Curitiba, Paraná, Brazil
| | - Diogo Kuczera
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, ICC/FIOCRUZ/PR, Curitiba, Paraná, Brazil
| | | | - Waldiceu Aparecido Verri
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Paraná, Brazil
| | | | - Juliano Bordignon
- Sección Virologia, Facultad de Ciencias, Universidad de La República, 11400, Montevideo, Uruguay
| |
Collapse
|