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Tsai YY, Cheng D, Huang SW, Hung SJ, Wang YF, Lin YJ, Tsai HP, Chu JJH, Wang JR. The molecular epidemiology of a dengue virus outbreak in Taiwan: population wide versus infrapopulation mutation analysis. PLoS Negl Trop Dis 2024; 18:e0012268. [PMID: 38870242 PMCID: PMC11207123 DOI: 10.1371/journal.pntd.0012268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 06/26/2024] [Accepted: 06/03/2024] [Indexed: 06/15/2024] Open
Abstract
Dengue virus (DENV) causes approximately 390 million dengue infections worldwide every year. There were 22,777 reported DENV infections in Tainan, Taiwan in 2015. In this study, we sequenced the C-prM-E genes from 45 DENV 2015 strains, and phylogenetic analysis based on C-prM-E genes revealed that all strains were classified as DENV serotype 2 Cosmopolitan genotype. Sequence analysis comparing different DENV-2 genotypes and Cosmopolitan DENV-2 sequences prior to 2015 showed a clade replacement event in the DENV-2 Cosmopolitan genotype. Additionally, a major substitution C-A314G (K73R) was found in the capsid region which may have contributed to the clade replacement event. Reverse genetics virus rgC-A314G (K73R) showed slower replication in BHK-21 and C6/36 cells compared to wildtype virus, as well as a decrease in NS1 production in BHK-21-infected cells. After a series of passaging, the C-A314G (K73R) mutation reverted to wildtype and was thus considered to be unstable. Next generation sequencing (NGS) of three sera collected from a single DENV2-infected patient at 1-, 2-, and 5-days post-admission was employed to examine the genetic diversity over-time and mutations that may work in conjunction with C-A314G (K73R). Results showed that the number of haplotypes decreased with time in the DENV-infected patient. On the fifth day after admission, two new haplotypes emerged, and a single non-synonymous NS4A-L115I mutation was identified. Therefore, we have identified a persistent mutation C-A314G (K73R) in all of the DENV-2 isolates, and during the course of an infection, a single new non-synonymous mutation in the NS4A region appears in the virus population within a single host. The C-A314G (K73R) thus may have played a role in the DENV-2 2015 outbreak while the NS4A-L115I may be advantageous during DENV infection within the host.
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Affiliation(s)
- You-Yuan Tsai
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Pathology, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Dayna Cheng
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Sheng-Wen Huang
- National Mosquito-Borne Diseases Control Research Center, National Health Research Institutes, Tainan, Taiwan
| | - Su-Jhen Hung
- National Mosquito-Borne Diseases Control Research Center, National Health Research Institutes, Tainan, Taiwan
| | - Ya-Fang Wang
- National Mosquito-Borne Diseases Control Research Center, National Health Research Institutes, Tainan, Taiwan
| | - Yih-Jyh Lin
- Division of General Surgery, Department of Surgery, College of Medicine, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Huey-Pin Tsai
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Pathology, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Justin Jang Hann Chu
- Infectious Diseases Translational Research Program and Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jen-Ren Wang
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Pathology, National Cheng Kung University Hospital, Tainan, Taiwan
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Center of Infectious Disease and Signaling Research, National Cheng Kung University, Tainan, Taiwan
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Perera DR, Ranadeva ND, Sirisena K, Wijesinghe KJ. Roles of NS1 Protein in Flavivirus Pathogenesis. ACS Infect Dis 2024; 10:20-56. [PMID: 38110348 DOI: 10.1021/acsinfecdis.3c00566] [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: 12/20/2023]
Abstract
Flaviviruses such as dengue, Zika, and West Nile viruses are highly concerning pathogens that pose significant risks to public health. The NS1 protein is conserved among flaviviruses and is synthesized as a part of the flavivirus polyprotein. It plays a critical role in viral replication, disease progression, and immune evasion. Post-translational modifications influence NS1's stability, secretion, antigenicity, and interactions with host factors. NS1 protein forms extensive interactions with host cellular proteins allowing it to affect vital processes such as RNA processing, gene expression regulation, and cellular homeostasis, which in turn influence viral replication, disease pathogenesis, and immune responses. NS1 acts as an immune evasion factor by delaying complement-dependent lysis of infected cells and contributes to disease pathogenesis by inducing endothelial cell damage and vascular leakage and triggering autoimmune responses. Anti-NS1 antibodies have been shown to cross-react with host endothelial cells and platelets, causing autoimmune destruction that is hypothesized to contribute to disease pathogenesis. However, in contrast, immunization of animal models with the NS1 protein confers protection against lethal challenges from flaviviruses such as dengue and Zika viruses. Understanding the multifaceted roles of NS1 in flavivirus pathogenesis is crucial for effective disease management and control. Therefore, further research into NS1 biology, including its host protein interactions and additional roles in disease pathology, is imperative for the development of strategies and therapeutics to combat flavivirus infections successfully. This Review provides an in-depth exploration of the current available knowledge on the multifaceted roles of the NS1 protein in the pathogenesis of flaviviruses.
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Affiliation(s)
- Dayangi R Perera
- Department of Chemistry, Faculty of Science, University of Colombo, Sri Lanka 00300
| | - Nadeeka D Ranadeva
- Department of Biomedical Science, Faculty of Health Sciences, KIU Campus Sri Lanka 10120
| | - Kavish Sirisena
- Department of Chemistry, Faculty of Science, University of Colombo, Sri Lanka 00300
- Section of Genetics, Institute for Research and Development in Health and Social Care, Sri Lanka 10120
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Tejo AM, Hamasaki DT, Menezes LM, Ho YL. Severe dengue in the intensive care unit. JOURNAL OF INTENSIVE MEDICINE 2024; 4:16-33. [PMID: 38263966 PMCID: PMC10800775 DOI: 10.1016/j.jointm.2023.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 06/19/2023] [Accepted: 07/24/2023] [Indexed: 01/25/2024]
Abstract
Dengue fever is considered the most prolific vector-borne disease in the world, with its transmission rate increasing more than eight times in the last two decades. While most cases present mild to moderate symptoms, 5% of patients can develop severe disease. Although the mechanisms are yet not fully comprehended, immune-mediated activation leading to excessive cytokine expression is suggested as a cause of the two main findings in critical patients: increased vascular permeability that may shock and thrombocytopenia, and coagulopathy that can induce hemorrhage. The risk factors of severe disease include previous infection by a different serotype, specific genotypes associated with more efficient replication, certain genetic polymorphisms, and comorbidities such as diabetes, obesity, and cardiovascular disease. The World Health Organization recommends careful monitoring and prompt hospitalization of patients with warning signs or propensity for severe disease to reduce mortality. This review aims to update the diagnosis and management of patients with severe dengue in the intensive care unit.
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Affiliation(s)
- Alexandre Mestre Tejo
- Intensive Care Unit, Department of Intensive Medicine of the Cancer Institute of the State of São Paulo, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Debora Toshie Hamasaki
- Transfusion Medicine and Cell Therapy Department, A.C. Camargo Cancer Center, São Paulo, Brazil
| | - Letícia Mattos Menezes
- Intensive Care Unit of Infectious Disease Department, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Yeh-Li Ho
- Intensive Care Unit of Infectious Disease Department, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
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Akram M, Hameed S, Hassan A, Khan KM. Development in the Inhibition of Dengue Proteases as Drug Targets. Curr Med Chem 2024; 31:2195-2233. [PMID: 37723635 DOI: 10.2174/0929867331666230918110144] [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: 03/20/2023] [Revised: 06/24/2023] [Accepted: 08/04/2023] [Indexed: 09/20/2023]
Abstract
BACKGROUND Viral infections continue to increase morbidity and mortality severely. The flavivirus genus has fifty different species, including the dengue, Zika, and West Nile viruses that can infect 40% of individuals globally, who reside in at least a hundred different countries. Dengue, one of the oldest and most dangerous human infections, was initially documented by the Chinese Medical Encyclopedia in the Jin period. It was referred to as "water poison," connected to flying insects, i.e., Aedes aegypti and Aedes albopictus. DENV causes some medical expressions like dengue hemorrhagic fever, acute febrile illness, and dengue shock syndrome. OBJECTIVE According to the World Health Organization report of 2012, 2500 million people are in danger of contracting dengue fever worldwide. According to a recent study, 96 million of the 390 million dengue infections yearly show some clinical or subclinical severity. There is no antiviral drug or vaccine to treat this severe infection. It can be controlled by getting enough rest, drinking plenty of water, and using painkillers. The first dengue vaccine created by Sanofi, called Dengvaxia, was previously approved by the USFDA in 2019. All four serotypes of the DENV1-4 have shown re-infection in vaccine recipients. However, the usage of Dengvaxia has been constrained by its adverse effects. CONCLUSION Different classes of compounds have been reported against DENV, such as nitrogen-containing heterocycles (i.e., imidazole, pyridine, triazoles quinazolines, quinoline, and indole), oxygen-containing heterocycles (i.e., coumarins), and some are mixed heterocyclic compounds of S, N (thiazole, benzothiazine, and thiazolidinediones), and N, O (i.e., oxadiazole). There have been reports of computationally designed compounds to impede the molecular functions of specific structural and non-structural proteins as potential therapeutic targets. This review summarized the current progress in developing dengue protease inhibitors.
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Affiliation(s)
- Muhammad Akram
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Shehryar Hameed
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75720, Pakistan
| | - Abbas Hassan
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Khalid Mohammed Khan
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75720, Pakistan
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Camarão AAR, Gern OL, Stegmann F, Mulenge F, Costa B, Saremi B, Jung K, Lepenies B, Kalinke U, Steffen I. Secreted NS1 proteins of tick-borne encephalitis virus and West Nile virus block dendritic cell activation and effector functions. Microbiol Spectr 2023; 11:e0219223. [PMID: 37707204 PMCID: PMC10581055 DOI: 10.1128/spectrum.02192-23] [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: 05/26/2023] [Accepted: 07/13/2023] [Indexed: 09/15/2023] Open
Abstract
The flavivirus non-structural protein 1 (NS1) is secreted from infected cells into the circulation and the serum levels correlate with disease severity. The effect of secreted NS1 (sNS1) on non-infected mammalian immune cells is largely unknown. Here, we expressed recombinant sNS1 proteins of tick-borne encephalitis virus (TBEV) and West Nile virus (WNV) and investigated their effects on dendritic cell (DC) effector functions. Murine bone marrow-derived DCs (BMDCs) showed reduced surface expression of co-stimulatory molecules and decreased release of pro-inflammatory cytokines when treated with sNS1 of TBEV or WNV prior to poly(I:C) stimulation. Transcriptional profiles of BMDCs that were sNS1-exposed prior to poly(I:C) stimulation showed two gene clusters that were downregulated by TBEV or WNV sNS1 and that were associated with innate and adaptive immune responses. Functionally, both sNS1 proteins modulated the capacity for BMDCs to induce specific T-cell responses as indicated by reduced IFN-γ levels in both CD4+ and CD8+ T cells after BMDC co-cultivation. In human monocyte-derived DCs, poly(I:C)-induced upregulation of co-stimulatory molecules and cytokine responses were even more strongly impaired by TBEV sNS1 or WNV sNS1 pretreatment than in the murine system. Our findings indicate that exogenous flaviviral sNS1 proteins interfere with DC-mediated stimulation of T cells, which is crucial for the initiation of cell-mediated adaptive immune responses in human flavivirus infections. Collectively, our data determine soluble flaviviral NS1 as a virulence factor responsible for a dampened immune response to flavivirus infections. IMPORTANCE The effective initiation of protective host immune responses controls the outcome of infection, and dysfunctional T-cell responses have previously been associated with symptomatic human flavivirus infections. We demonstrate that secreted flavivirus NS1 proteins modulate innate immune responses of uninfected bystander cells. In particular, sNS1 markedly reduced the capacity of dendritic cells to stimulate T-cell responses upon activation. Hence, by modulating cellular host responses that are required for effective antigen presentation and initiation of adaptive immunity, sNS1 proteins may contribute to severe outcomes of flavivirus disease.
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Affiliation(s)
- António A. R. Camarão
- Institute of Biochemistry, University of Veterinary Medicine Hannover, Hannover, Germany
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Olivia Luise Gern
- Institute for Experimental Infection Research, TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Helmholtz Centre for Infection Research and the Hannover Medical School, Hannover, Germany
| | - Felix Stegmann
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, Germany
- Institute for Immunology, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Felix Mulenge
- Institute for Experimental Infection Research, TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Helmholtz Centre for Infection Research and the Hannover Medical School, Hannover, Germany
| | - Bibiana Costa
- Institute for Experimental Infection Research, TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Helmholtz Centre for Infection Research and the Hannover Medical School, Hannover, Germany
| | - Babak Saremi
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Klaus Jung
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Bernd Lepenies
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, Germany
- Institute for Immunology, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Ulrich Kalinke
- Institute for Experimental Infection Research, TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Helmholtz Centre for Infection Research and the Hannover Medical School, Hannover, Germany
- Cluster of Excellence—Resolving Infection Susceptibility (RESIST, EXC 2155), Hannover Medical School, Hannover, Germany
| | - Imke Steffen
- Institute of Biochemistry, University of Veterinary Medicine Hannover, Hannover, Germany
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, Germany
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Malnero CM, Azevedo RC, Bergmann IE, de Meneses MDF, Cavalcanti AC, Ibáñez LI, Malirat V. Expression of recombinant dengue virus type 1 non-structural protein 1 in mammalian cells and preliminary assessment of its suitability to detect human IgG antibodies elicited by viral infection. J Immunol Methods 2023; 518:113503. [PMID: 37263391 DOI: 10.1016/j.jim.2023.113503] [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: 12/14/2022] [Revised: 05/18/2023] [Accepted: 05/25/2023] [Indexed: 06/03/2023]
Abstract
In recent years dengue has become a rapidly growing public health problem worldwide, however, the availability of accurate and affordable diagnostic immunoassays is limited, partly due to the difficulty of producing large quantities of purified antigen. Non-structural protein 1 (NS1) has shown to be a good candidate for inclusion in diagnostic assays and for serosurveys, particularly in endemic countries as a prerequisite for vaccination. In this work the NS1 antigen derived from dengue virus type-1 (DENV1) was expressed in HEK293-T cells and purified by affinity chromatography. The recombinant protein was recovered properly folded as dimers, highly purified and with good yield (1.5 mg/L). It was applied as a serological probe in an indirect ELISA developed in this work to detect human IgG antibodies. Preliminary comparative performance values of 81.1% sensitivity and 83.0% specificity of the developed and preliminary validated iELISA, relative to a commercial kit were obtained, suggesting that the purified recombinant DENV1 NS1 antigen is suitable to detect IgG antibodies, indicative of past DENV infection.
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Affiliation(s)
- Cristian Miguel Malnero
- Centro de Virología Humana y Animal (CEVHAN), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Abierta Interamericana (UAI), Buenos Aires C1287, Argentina
| | - Renata Campos Azevedo
- Department of Virology, Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ingrid Evelyn Bergmann
- Centro de Virología Humana y Animal (CEVHAN), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Abierta Interamericana (UAI), Buenos Aires C1287, Argentina
| | | | - Andrea Cony Cavalcanti
- Department of Virology, Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Central Laboratory of Public Health Noel Nutels (LACEN-RJ), Rio de Janeiro, Brazil
| | - Lorena Itatí Ibáñez
- Instituto de Química Física de los Materiales, Medio Ambiente y Energía (INQUIMAE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad de Buenos Aires (UBA), Buenos Aires C1428EGA, Argentina
| | - Viviana Malirat
- Centro de Virología Humana y Animal (CEVHAN), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Abierta Interamericana (UAI), Buenos Aires C1287, Argentina.
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Alpha-mangostin inhibits viral replication and suppresses nuclear factor kappa B (NF-κB)-mediated inflammation in dengue virus infection. Sci Rep 2022; 12:16088. [PMID: 36168031 PMCID: PMC9515165 DOI: 10.1038/s41598-022-20284-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 09/12/2022] [Indexed: 11/08/2022] Open
Abstract
Severe dengue virus (DENV) infection results from viral replication and dysregulated host immune response, which trigger massive cytokine production/cytokine storm. The result is severe vascular leakage, hemorrhagic diathesis, and organ dysfunction. Subsequent to previously proposing that an ideal drug for treatment of DENV infection should efficiently inhibit both virus production and cytokine storm, we discovered that α-mangostin (α-MG) from the pericarp of the mangosteen fruit could inhibit both DENV infection and cytokine/chemokine production. In this study, we investigated the molecular mechanisms underlying the antiviral and anti-inflammatory effects of α-MG. Time-of-drug-addition and time-of-drug-elimination studies suggested that α-MG inhibits the replication step of the DENV life cycle. α-MG inhibited polymerization activity of RNA-dependent RNA polymerase (RdRp) with IC50 values of 16.50 μM and significantly reduced viral RNA and protein syntheses, and virion production. Antiviral and cytokine/chemokine gene expression profiles of α-MG-treated DENV-2-infected cells were investigated by polymerase chain reaction array. α-MG suppressed the expression of 37 antiviral and cytokine/chemokine genes that relate to the NF-κB signaling pathway. Immunofluorescence and immunoblot analyses revealed that α-MG inhibits NF-κB nuclear translocation in DENV-2-infected cells in association with reduced RANTES, IP-10, TNF-α, and IL-6 production. These results suggest α-MG as a potential treatment for DENV infection.
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Latanova A, Starodubova E, Karpov V. Flaviviridae Nonstructural Proteins: The Role in Molecular Mechanisms of Triggering Inflammation. Viruses 2022; 14:v14081808. [PMID: 36016430 PMCID: PMC9414172 DOI: 10.3390/v14081808] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/13/2022] [Accepted: 08/15/2022] [Indexed: 12/24/2022] Open
Abstract
Members of the Flaviviridae family are posing a significant threat to human health worldwide. Many flaviviruses are capable of inducing severe inflammation in humans. Flaviviridae nonstructural proteins, apart from their canonical roles in viral replication, have noncanonical functions strongly affecting antiviral innate immunity. Among these functions, antagonism of type I IFN is the most investigated; meanwhile, more data are accumulated on their role in the other pathways of innate response. This review systematizes the last known data on the role of Flaviviridae nonstructural proteins in molecular mechanisms of triggering inflammation, with an emphasis on their interactions with TLRs and RLRs, interference with NF-κB and cGAS-STING signaling, and activation of inflammasomes.
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In Silico Elucidation of Potent Inhibitors from Natural Products for Nonstructural Proteins of Dengue Virus. J CHEM-NY 2022. [DOI: 10.1155/2022/5398239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Medicinal plants have been used from the beginning of human civilization against various health complications. Dengue virus (DENV) has emerged as one of the most widespread viruses in tropical and subtropical countries. Yet no clinically approved antiviral drug is available to combat DENV infection. Consequently, the search for novel antidengue agents from medicinal plants has assumed more insistence than in previous days. This study has focused on 31 potential antidengue molecules from secondary metabolites to examine their inhibitory activity against DENV nonstructural proteins through molecular docking and pharmacokinetics studies. In this research, the wet lab experiments were tested on a computational platform. Agathisflavone and pectolinarin are the top-scored inhibitors of DENV NS2B/NS3 protease and NS5 polymerase, respectively. Epigallocatechin gallate, Pinostrobin, Panduratin A, and Pectolinarin could be potential lead compounds against NS2B/NS3 protease, while acacetin-7-O-rutinoside against NS5 polymerase. Moreover, agathisflavone (LD50= 1430 mg/kg) and pectolinarin (LD50= 5000 mg/kg) exhibited less toxicity than nelfinavir (LD50= 600 mg/kg) and balapiravir (LD50 = 824 mg/kg), and the reference drugs. Further research on clinical trials is required to analyze the therapeutic efficacy of these metabolites to develop new potential drug candidates against different serotypes of DENV.
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Benfrid S, Park K, Dellarole M, Voss JE, Tamietti C, Pehau‐Arnaudet G, Raynal B, Brûlé S, England P, Zhang X, Mikhailova A, Hasan M, Ungeheuer M, Petres S, Biering SB, Harris E, Sakuntabhai A, Buchy P, Duong V, Dussart P, Coulibaly F, Bontems F, Rey FA, Flamand M. Dengue virus NS1 protein conveys pro-inflammatory signals by docking onto high-density lipoproteins. EMBO Rep 2022; 23:e53600. [PMID: 35607830 PMCID: PMC10549233 DOI: 10.15252/embr.202153600] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 04/24/2022] [Accepted: 04/27/2022] [Indexed: 10/05/2023] Open
Abstract
The dengue virus nonstructural protein 1 (NS1) is a secreted virulence factor that modulates complement, activates immune cells and alters endothelial barriers. The molecular basis of these events remains incompletely understood. Here we describe a functional high affinity complex formed between NS1 and human high-density lipoproteins (HDL). Collapse of the soluble NS1 hexamer upon binding to the lipoprotein particle leads to the anchoring of amphipathic NS1 dimeric subunits into the HDL outer layer. The stable complex can be visualized by electron microscopy as a spherical HDL with rod-shaped NS1 dimers protruding from the surface. We further show that the assembly of NS1-HDL complexes triggers the production of pro-inflammatory cytokines in human primary macrophages while NS1 or HDL alone do not. Finally, we detect NS1 in complex with HDL and low-density lipoprotein (LDL) particles in the plasma of hospitalized dengue patients and observe NS1-apolipoprotein E-positive complexes accumulating overtime. The functional reprogramming of endogenous lipoprotein particles by NS1 as a means to exacerbate systemic inflammation during viral infection provides a new paradigm in dengue pathogenesis.
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Affiliation(s)
- Souheyla Benfrid
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
- Université Paris Descartes SorbonneParis CitéFrance
- Present address:
Laboratoire de Santé AnimaleANSES, INRA, ENVA, UMR 1161Université Paris‐EstMaisons‐AlfortFrance
| | - Kyu‐Ho Park
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
- Present address:
Applied Molecular VirologyInstitut Pasteur KoreaSeongnam‐siKorea
| | - Mariano Dellarole
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
- Present address:
Virus Biophysics LaboratoryBionanosciences Research Center (CIBION)National Scientific and Technical Research Council (CONICET)Ciudad Autónoma de Buenos AiresArgentina
| | - James E Voss
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
- Present address:
Department of Immunology and MicrobiologyThe Scripps Research InstituteLa JollaCAUSA
| | - Carole Tamietti
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
| | | | - Bertrand Raynal
- Molecular Biophysics FacilityCNRS UMR 3528Institut PasteurParisFrance
| | - Sébastien Brûlé
- Molecular Biophysics FacilityCNRS UMR 3528Institut PasteurParisFrance
| | - Patrick England
- Molecular Biophysics FacilityCNRS UMR 3528Institut PasteurParisFrance
| | - Xiaokang Zhang
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
- Present address:
Guangdong Provincial Key Laboratory of Brain Connectome and Behavior, CAS Key Laboratory of Brain Connectome and Manipulationthe Brain Cognition and Brain Disease Institute (BCBDI)Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen‐Hong Kong Institute of Brain Science‐Shenzhen Fundamental Research InstitutionsShenzhenChina
| | - Anastassia Mikhailova
- HIV Inflammation et PersistanceInstitut PasteurParisFrance
- Present address:
Division of Molecular NeurobiologyDepartment of Medical Biochemistry and BiophysicsKarolinska InstituteStockholmSweden
| | - Milena Hasan
- Cytometry and Biomarkers Unit of Technology and ServiceCB UTechSParisFrance
| | | | - Stéphane Petres
- Production and Purification of Recombinant Proteins FacilityInstitut PasteurParisFrance
| | - Scott B Biering
- Division of Infectious Diseases and VaccinologySchool of Public HealthUniversity of CaliforniaBerkeleyCAUSA
| | - Eva Harris
- Division of Infectious Diseases and VaccinologySchool of Public HealthUniversity of CaliforniaBerkeleyCAUSA
| | | | - Philippe Buchy
- Virology UnitInstitut Pasteur du CambodgeInstitut Pasteur International NetworkPhnom PenhCambodia
- Present address:
GlaxoSmithKline Vaccines R&DSingaporeSingapore
| | - Veasna Duong
- Virology UnitInstitut Pasteur du CambodgeInstitut Pasteur International NetworkPhnom PenhCambodia
| | - Philippe Dussart
- Virology UnitInstitut Pasteur du CambodgeInstitut Pasteur International NetworkPhnom PenhCambodia
| | - Fasséli Coulibaly
- Department of Biochemistry and Molecular BiologyMonash UniversityClaytonVic.Australia
| | - François Bontems
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
- Département de Biologie et Chimie StructuralesInstitut de Chimie des Substances Naturelles, CNRS UPR2301Gif‐sur‐YvetteFrance
| | - Félix A Rey
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
| | - Marie Flamand
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
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De S, Aamna B, Sahu R, Parida S, Behera SK, Dan AK. Seeking heterocyclic scaffolds as antivirals against dengue virus. Eur J Med Chem 2022; 240:114576. [PMID: 35816877 PMCID: PMC9250831 DOI: 10.1016/j.ejmech.2022.114576] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/24/2022] [Accepted: 06/25/2022] [Indexed: 12/20/2022]
Abstract
Dengue is one of the most typical viral infection categorized in the Neglected Tropical Diseases (NTDs). It is transmitted via the female Aedes aegypti mosquito to humans and majorly puts risk to the lives of more than half of the world. Recent advancements in medicinal chemistry have led to the design and development of numerous potential heterocyclic scaffolds as antiviral drug candidates for the inhibition of the dengue virus (DENV). Thus, in this review, we have discussed the significance of inhibitory and antiviral activities of nitrogen, oxygen, and mixed (nitrogen-sulfur and nitrogen-oxygen) heterocyclic scaffolds that are published in the last seven years (2016–2022). Furthermore, we have also discussed the probable mechanisms of action and the diverse structure-activity relationships (SARs) of the heterocyclic scaffolds. In addition, this review has elaborately outlined the mechanism of viral infection and the life cycle of DENV in the host cells. The wide set of heterocycles and their SARs will aid in the development of pharmaceuticals that will allow the researchers to synthesize the promising anti-dengue drug candidate in the future.
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12
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Abstract
The dengue virus NS1 is a multifunctional protein that forms part of replication complexes. NS1 is also secreted, as a hexamer, to the extracellular milieu. Circulating NS1 has been associated with dengue pathogenesis by several mechanisms. Cell binding and internalization of soluble NS1 result in endothelial hyperpermeability and in the downregulation of the innate immune response. In this work, we report that the HDL scavenger receptor B1 (SRB1) in human hepatic cells and a scavenger receptor B1-like in mosquito C6/36 cells act as cell surface binding receptors for dengue virus NS1. The presence of the SRB1 on the plasma membrane of C6/36 cells, as well as in Huh7 cells, was demonstrated by confocal microscopy. The internalization of NS1 can be efficiently blocked by anti-SRB1 antibodies, and previous incubation of the cells with HDL significantly reduces NS1 internalization. Significant reduction in NS1 internalization was observed in C6/36 cells transfected with siRNAs specific for SRB1. In addition, the transient expression of SRB1 in Vero cells, which lacks the receptor, allows NS1 internalization in these cells. Direct interaction between soluble NS1 and the SRB1 in Huh7 and C6/36 cells was demonstrated in situ by proximity ligation assays and in vitro by surface plasmon resonance. Finally, results are presented indicating that the SRB1 also acts as a cell receptor for Zika virus NS1. These results demonstrate that dengue virus NS1, a bona fide lipoprotein, usurps the HDL receptor for cell entry and offers explanations for the altered serum lipoprotein homeostasis observed in dengue patients. IMPORTANCE Dengue is the most common viral disease transmitted to humans by mosquitoes. The dengue virus NS1 is a multifunctional glycoprotein necessary for viral replication. NS1 is also secreted as a hexameric lipoprotein and circulates in high concentrations in the sera of patients. Circulating NS1 has been associated with dengue pathogenesis by several mechanisms, including favoring of virus replication in hepatocytes and dendritic cells and disruption of the endothelial glycocalyx leading to hyperpermeability. Those last actions require NS1 internalization. Here, we identify the scavenger cell receptor B1, as the cell-binding receptor for dengue and Zika virus NS1, in cultured liver and in mosquito cells. The results indicate that flavivirus NS1, a bona fide lipoprotein, usurps the human HDL receptor and may offer explanations for the alterations in serum lipoprotein homeostasis observed in dengue patients.
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Production of Properly Folded NS1 Protein in Bacterial Cells. Methods Mol Biol 2021. [PMID: 34709633 DOI: 10.1007/978-1-0716-1879-0_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Dengue virus (DENV) NS1 protein is a multifunctional protein involved in several pathogenic processes but also has been described as a protective antigen suitable for eliciting humoral response against DENV. NS1 is essential for virus replication and can be found in different cell compartments and at different oligomeric states. It is secreted to the extracellular medium and can also be found circulating in the blood of infected patients, being routinely used as the serum biomarker for early dengue diagnosis. High-yield production of the recombinant NS1 protein in a native-like conformation is essential for studies regarding its function during DENV infection as well as to those interested in the development of new diagnostic approaches based on this protein. In this chapter, we describe an optimized protocol for high-yield expression of native-like NS1 in Escherichia coli bacterial cells.
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Rossi ÁD, Higa LM, Herlinger AL, Ribeiro-Alves M, de Menezes MT, Giannini ALM, Cardoso CC, Da Poian AT, Tanuri A, Aguiar RS. Differential Expression of Human MicroRNAs During Dengue Virus Infection in THP-1 Monocytes. Front Cell Infect Microbiol 2021; 11:714088. [PMID: 34568093 PMCID: PMC8455953 DOI: 10.3389/fcimb.2021.714088] [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: 05/24/2021] [Accepted: 08/25/2021] [Indexed: 12/31/2022] Open
Abstract
Dengue virus (DENV) is the most widespread arbovirus, responsible for a wide range of clinical manifestations, varying from self-limited illness to severe hemorrhagic fever. Dengue severity is associated with host intense proinflammatory response and monocytes have been considered one of the key cell types involved in the early steps of DENV infection and immunopathogenesis. To better understand cellular mechanisms involved in monocyte infection by DENV, we analyzed the expression levels of 754 human microRNAs in DENV-infected THP-1 cells, a human monocytic cell line. Eleven human microRNAs showed differential expression after DENV infection and gene ontology and enrichment analysis revealed biological processes potentially affected by these molecules. Five downregulated microRNAs were significantly linked to cellular response to stress, four to cell death/apoptosis, two to innate immune responses and one upregulated to vesicle mediated, TGF-β signaling, phosphatidylinositol mediated signaling, lipid metabolism process and blood coagulation.
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Affiliation(s)
- Átila Duque Rossi
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Luiza Mendonça Higa
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Laboratório de Bioquímica de Vírus, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alice Laschuk Herlinger
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcelo Ribeiro-Alves
- Laboratório de Pesquisa Clínica em DST/AIDS, Instituto Nacional de Infectologia Evandro Chagas, FIOCRUZ, Rio de Janeiro, Brazil
| | - Mariane Talon de Menezes
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Lucia Moraes Giannini
- Laboratório de Genômica Funcional e Transdução de Sinal, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cynthia Chester Cardoso
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Andrea T Da Poian
- Laboratório de Bioquímica de Vírus, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Amilcar Tanuri
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Renato Santana Aguiar
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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15
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Fumagalli MJ, Figueiredo LTM, Aquino VH. Linear and Continuous Flavivirus Epitopes From Naturally Infected Humans. Front Cell Infect Microbiol 2021; 11:710551. [PMID: 34458161 PMCID: PMC8387565 DOI: 10.3389/fcimb.2021.710551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 07/15/2021] [Indexed: 12/27/2022] Open
Abstract
This manuscript is an up-to-date review of experimentally validated linear and continuous epitopes identified from arbovirus members of the Flavivirus genus. We summarized 153 immunoreactive peptides from the Dengue virus, Zika virus, Japanese encephalitis virus, West Nile virus, and tick-borne encephalitis virus described in studies published from 1989 to 2020. We included peptides from structural (envelope, capsid, and pre-membrane) and nonstructural (Ns1–5) viral proteins that demonstrated relevant immunoreactivity with antibodies from naturally infected or vaccinated humans. We included peptides that demonstrated relevant reactivity features, such as indicators of disease severity related to immunological or immunopathological outcomes, differential or group diagnostic markers, immunotherapy candidates, and potential for vaccine formulation. The majority of immunoreactive peptides were described for DENV probably due to its long-lasting impact on human health and the lack of efficient vaccines and therapeutic methods. Immune landscape data regarding linear immunoreactive and continuous flavivirus peptides are still scarce, and a complete and more detailed map remains to be elucidated. Therefore, this review provides valuable data for those investigating the antibody response against flavivirus infection.
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Affiliation(s)
- Marcilio Jorge Fumagalli
- Virology Research Center, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | | | - Victor Hugo Aquino
- Laboratory of Virology, Department of Clinical Analyses, Toxicology and Food Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
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16
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Lebeau G, Lagrave A, Ogire E, Grondin L, Seriacaroupin S, Moutoussamy C, Mavingui P, Hoarau JJ, Roche M, Krejbich-Trotot P, Desprès P, Viranaicken W. Viral Toxin NS1 Implication in Dengue Pathogenesis Making It a Pivotal Target in Development of Efficient Vaccine. Vaccines (Basel) 2021; 9:vaccines9090946. [PMID: 34579183 PMCID: PMC8471935 DOI: 10.3390/vaccines9090946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/29/2021] [Accepted: 08/04/2021] [Indexed: 11/20/2022] Open
Abstract
The mosquito-borne viral disease dengue is a global public health problem causing a wide spectrum of clinical manifestations ranging from mild dengue fever to severe dengue with plasma leakage and bleeding which are often fatal. To date, there are no specific medications to treat dengue and prevent the risk of hemorrhage. Dengue is caused by one of four genetically related but antigenically distinct serotypes DENV-1–DENV-4. The growing burden of the four DENV serotypes has intensified both basic and applied research to better understand dengue physiopathology. Research has shown that the secreted soluble hexameric form of DENV nonstructural protein-1 (sNS1) plays a significant role in the pathogenesis of severe dengue. Here, we provide an overview of the current knowledge about the role of sNS1 in the immunopathogenesis of dengue disease. We discuss the potential use of sNS1 in future vaccine development and its potential to improve dengue vaccine efficiency, particularly against severe dengue illness.
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17
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Dechtawewat T, Roytrakul S, Yingchutrakul Y, Charoenlappanit S, Siridechadilok B, Limjindaporn T, Mangkang A, Prommool T, Puttikhunt C, Songprakhon P, Kongmanas K, Kaewjew N, Avirutnan P, Yenchitsomanus PT, Malasit P, Noisakran S. Potential Phosphorylation of Viral Nonstructural Protein 1 in Dengue Virus Infection. Viruses 2021; 13:v13071393. [PMID: 34372598 PMCID: PMC8310366 DOI: 10.3390/v13071393] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/12/2021] [Accepted: 07/14/2021] [Indexed: 12/27/2022] Open
Abstract
Dengue virus (DENV) infection causes a spectrum of dengue diseases that have unclear underlying mechanisms. Nonstructural protein 1 (NS1) is a multifunctional protein of DENV that is involved in DENV infection and dengue pathogenesis. This study investigated the potential post-translational modification of DENV NS1 by phosphorylation following DENV infection. Using liquid chromatography-tandem mass spectrometry (LC-MS/MS), 24 potential phosphorylation sites were identified in both cell-associated and extracellular NS1 proteins from three different cell lines infected with DENV. Cell-free kinase assays also demonstrated kinase activity in purified preparations of DENV NS1 proteins. Further studies were conducted to determine the roles of specific phosphorylation sites on NS1 proteins by site-directed mutagenesis with alanine substitution. The T27A and Y32A mutations had a deleterious effect on DENV infectivity. The T29A, T230A, and S233A mutations significantly decreased the production of infectious DENV but did not affect relative levels of intracellular DENV NS1 expression or NS1 secretion. Only the T230A mutation led to a significant reduction of detectable DENV NS1 dimers in virus-infected cells; however, none of the mutations interfered with DENV NS1 oligomeric formation. These findings highlight the importance of DENV NS1 phosphorylation that may pave the way for future target-specific antiviral drug design.
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Affiliation(s)
- Thanyaporn Dechtawewat
- Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (T.D.); (P.S.); (P.-t.Y.)
| | - Sittiruk Roytrakul
- Functional Proteomics Technology Laboratory, Functional Ingredients and Food Innovation Research Group, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok 12120, Thailand; (S.R.); (Y.Y.); (S.C.)
| | - Yodying Yingchutrakul
- Functional Proteomics Technology Laboratory, Functional Ingredients and Food Innovation Research Group, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok 12120, Thailand; (S.R.); (Y.Y.); (S.C.)
| | - Sawanya Charoenlappanit
- Functional Proteomics Technology Laboratory, Functional Ingredients and Food Innovation Research Group, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok 12120, Thailand; (S.R.); (Y.Y.); (S.C.)
| | - Bunpote Siridechadilok
- Molecular Biology of Dengue and Flaviviruses Research Team, Medical Molecular Biotechnology Research Group, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok 10700, Thailand; (B.S.); (A.M.); (T.P.); (C.P.); (P.M.)
- Division of Dengue Hemorrhagic Fever Research, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.K.); (N.K.); (P.A.)
| | - Thawornchai Limjindaporn
- Department of Anatomy, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand;
| | - Arunothai Mangkang
- Molecular Biology of Dengue and Flaviviruses Research Team, Medical Molecular Biotechnology Research Group, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok 10700, Thailand; (B.S.); (A.M.); (T.P.); (C.P.); (P.M.)
- Division of Dengue Hemorrhagic Fever Research, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.K.); (N.K.); (P.A.)
| | - Tanapan Prommool
- Molecular Biology of Dengue and Flaviviruses Research Team, Medical Molecular Biotechnology Research Group, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok 10700, Thailand; (B.S.); (A.M.); (T.P.); (C.P.); (P.M.)
- Division of Dengue Hemorrhagic Fever Research, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.K.); (N.K.); (P.A.)
- Siriraj Center of Research Excellence in Dengue and Emerging Pathogens, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Chunya Puttikhunt
- Molecular Biology of Dengue and Flaviviruses Research Team, Medical Molecular Biotechnology Research Group, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok 10700, Thailand; (B.S.); (A.M.); (T.P.); (C.P.); (P.M.)
- Division of Dengue Hemorrhagic Fever Research, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.K.); (N.K.); (P.A.)
- Siriraj Center of Research Excellence in Dengue and Emerging Pathogens, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Pucharee Songprakhon
- Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (T.D.); (P.S.); (P.-t.Y.)
| | - Kessiri Kongmanas
- Division of Dengue Hemorrhagic Fever Research, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.K.); (N.K.); (P.A.)
- Siriraj Center of Research Excellence in Dengue and Emerging Pathogens, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Nuttapong Kaewjew
- Division of Dengue Hemorrhagic Fever Research, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.K.); (N.K.); (P.A.)
- Siriraj Center of Research Excellence in Dengue and Emerging Pathogens, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Panisadee Avirutnan
- Division of Dengue Hemorrhagic Fever Research, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.K.); (N.K.); (P.A.)
- Siriraj Center of Research Excellence in Dengue and Emerging Pathogens, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Pa-thai Yenchitsomanus
- Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (T.D.); (P.S.); (P.-t.Y.)
| | - Prida Malasit
- Molecular Biology of Dengue and Flaviviruses Research Team, Medical Molecular Biotechnology Research Group, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok 10700, Thailand; (B.S.); (A.M.); (T.P.); (C.P.); (P.M.)
- Division of Dengue Hemorrhagic Fever Research, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.K.); (N.K.); (P.A.)
- Siriraj Center of Research Excellence in Dengue and Emerging Pathogens, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Sansanee Noisakran
- Molecular Biology of Dengue and Flaviviruses Research Team, Medical Molecular Biotechnology Research Group, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok 10700, Thailand; (B.S.); (A.M.); (T.P.); (C.P.); (P.M.)
- Division of Dengue Hemorrhagic Fever Research, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.K.); (N.K.); (P.A.)
- Siriraj Center of Research Excellence in Dengue and Emerging Pathogens, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
- Correspondence: or ; Tel.: +66-2-419-6666
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Dengue and the Lectin Pathway of the Complement System. Viruses 2021; 13:v13071219. [PMID: 34202570 PMCID: PMC8310334 DOI: 10.3390/v13071219] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/17/2021] [Accepted: 06/19/2021] [Indexed: 12/15/2022] Open
Abstract
Dengue is a mosquito-borne viral disease causing significant health and economic burdens globally. The dengue virus (DENV) comprises four serotypes (DENV1-4). Usually, the primary infection is asymptomatic or causes mild dengue fever (DF), while secondary infections with a different serotype increase the risk of severe dengue disease (dengue hemorrhagic fever, DHF). Complement system activation induces inflammation and tissue injury, contributing to disease pathogenesis. However, in asymptomatic or primary infections, protective immunity largely results from the complement system’s lectin pathway (LP), which is activated through foreign glycan recognition. Differences in N-glycans displayed on the DENV envelope membrane influence the lectin pattern recognition receptor (PRR) binding efficiency. The important PRR, mannan binding lectin (MBL), mediates DENV neutralization through (1) a complement activation-independent mechanism via direct MBL glycan recognition, thereby inhibiting DENV attachment to host target cells, or (2) a complement activation-dependent mechanism following the attachment of complement opsonins C3b and C4b to virion surfaces. The serum concentrations of lectin PRRs and their polymorphisms influence these LP activities. Conversely, to escape the LP attack and enhance the infectivity, DENV utilizes the secreted form of nonstructural protein 1 (sNS1) to counteract the MBL effects, thereby increasing viral survival and dissemination.
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19
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Inflammatory signaling in dengue-infected platelets requires translation and secretion of nonstructural protein 1. Blood Adv 2021; 4:2018-2031. [PMID: 32396616 DOI: 10.1182/bloodadvances.2019001169] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 04/06/2020] [Indexed: 12/13/2022] Open
Abstract
Emerging evidence identifies major contributions of platelets to inflammatory amplification in dengue, but the mechanisms of infection-driven platelet activation are not completely understood. Dengue virus nonstructural protein-1 (DENV NS1) is a viral protein secreted by infected cells with recognized roles in dengue pathogenesis, but it remains unknown whether NS1 contributes to the inflammatory phenotype of infected platelets. This study shows that recombinant DENV NS1 activated platelets toward an inflammatory phenotype that partially reproduced DENV infection. NS1 stimulation induced translocation of α-granules and release of stored factors, but not of newly synthesized interleukin-1β (IL-1β). Even though both NS1 and DENV were able to induce pro-IL-1β synthesis, only DENV infection triggered caspase-1 activation and IL-1β release by platelets. A more complete thromboinflammatory phenotype was achieved by synergistic activation of NS1 with classic platelet agonists, enhancing α-granule translocation and inducing thromboxane A2 synthesis (thrombin and platelet-activating factor), or activating caspase-1 for IL-1β processing and secretion (adenosine triphosphate). Also, platelet activation by NS1 partially depended on toll-like receptor-4 (TLR-4), but not TLR-2/6. Finally, the platelets sustained viral genome translation and replication, but did not support the release of viral progeny to the extracellular milieu, characterizing an abortive viral infection. Although DENV infection was not productive, translation of the DENV genome led to NS1 expression and release by platelets, contributing to the activation of infected platelets through an autocrine loop. These data reveal distinct, new mechanisms for platelet activation in dengue, involving DENV genome translation and NS1-induced platelet activation via platelet TLR4.
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Instability of the NS1 Glycoprotein from La Reunion 2018 Dengue 2 Virus (Cosmopolitan-1 Genotype) in Huh7 Cells Is Due to Lysine Residues on Positions 272 and 324. Int J Mol Sci 2021; 22:ijms22041951. [PMID: 33669407 PMCID: PMC7920422 DOI: 10.3390/ijms22041951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/08/2021] [Accepted: 02/15/2021] [Indexed: 11/16/2022] Open
Abstract
La Reunion island in the South West Indian Ocean is now endemic for dengue following the introduction of dengue virus serotype 2 (DENV-2) cosmopolitan-I genotype in 2017. DENV-2 infection causes a wide spectrum of clinical manifestations ranging from flu-like disease to severe dengue. The nonstructural glycoprotein 1 (NS1) has been identified as playing a key role in dengue disease severity. The intracellular NS1 exists as a homodimer, whereas a fraction is driven towards the plasma membrane or released as a soluble hexameric protein. Here, we characterized the NS1 glycoproteins from clinical isolates DES-14 and RUN-18 that were collected during the DENV-2 epidemics in Tanzania in 2014 and La Reunion island in 2018, respectively. In relation to hepatotropism of the DENV, expression of recombinant DES-14 NS1 and RUN-18 NS1 glycoproteins was compared in human hepatoma Huh7 cells. We observed that RUN-18 NS1 was poorly stable in Huh7 cells compared to DES-14 NS1. The instability of RUN-18 NS1 leading to a low level of NS1 secretion mostly relates to lysine residues on positions 272 and 324. Our data raise the issue of the consequences of a defect in NS1 stability in human hepatocytes in relation to the major role of NS1 in the pathogenesis of the DENV-2 infection.
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Monoclonal Antibodies against Zika Virus NS1 Protein Confer Protection via Fc γ Receptor-Dependent and -Independent Pathways. mBio 2021; 12:mBio.03179-20. [PMID: 33563822 PMCID: PMC7885117 DOI: 10.1128/mbio.03179-20] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Zika virus (ZIKV) is a mosquito-borne flavivirus that has been linked to congenital microcephaly during recent epidemics. No licensed antiviral drug or vaccine is available. Zika virus (ZIKV) infection during pregnancy causes congenital defects such as fetal microcephaly. Monoclonal antibodies (MAbs) against the nonstructural protein 1 (NS1) have the potential to suppress ZIKV pathogenicity without enhancement of disease, but the pathways through which they confer protection remain obscure. Here, we report two types of NS1-targeted human MAbs that inhibit ZIKV infection through distinct mechanisms. MAbs 3G2 and 4B8 show a better efficacy than MAb 4F10 in suppressing ZIKV infection in C57BL/6 neonatal mice. Unlike MAb 4F10 that mainly triggers antibody-dependent cell-mediated cytotoxicity (ADCC), MAbs 3G2 and 4B8 not only trigger ADCC but inhibit ZIKV infection without Fcγ receptor-bearing effector cells, possibly at postentry stages. Destroying the Fc-mediated effector function of MAbs 3G2 and 4B8 reduces but does not abolish their protective effects, whereas destroying the effector function of MAb 4F10 eliminates the protective effects, suggesting that MAbs 3G2 and 4B8 engage both Fcγ receptor-dependent and -independent pathways. Further analysis reveals that MAbs 3G2 and 4B8 target the N-terminal region of NS1 protein, whereas MAb 4F10 targets the C-terminal region, implying that the protective efficacy of an NS1-targeted MAb may be associated with its epitope recognition. Our results illustrate that NS1-targeted MAbs have multifaceted protective effects and provide insights for the development of NS1-based vaccines and therapeutics.
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Peptides targeting dengue viral nonstructural protein 1 inhibit dengue virus production. Sci Rep 2020; 10:12933. [PMID: 32737386 PMCID: PMC7395749 DOI: 10.1038/s41598-020-69515-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 07/13/2020] [Indexed: 12/12/2022] Open
Abstract
Viruses manipulate the life cycle in host cells via the use of viral properties and host machineries. Development of antiviral peptides against dengue virus (DENV) infection has previously been concentrated on blocking the actions of viral structural proteins and enzymes in virus entry and viral RNA processing in host cells. In this study, we proposed DENV NS1, which is a multifunctional non-structural protein indispensable for virus production, as a new target for inhibition of DENV infection by specific peptides. We performed biopanning assays using a phage-displayed peptide library and identified 11 different sequences of 12-mer peptides binding to DENV NS1. In silico analyses of peptide-protein interactions revealed 4 peptides most likely to bind to DENV NS1 at specific positions and their association was analysed by surface plasmon resonance. Treatment of Huh7 cells with these 4 peptides conjugated with N-terminal fluorescent tag and C-terminal cell penetrating tag at varying time-of-addition post-DENV infection could inhibit the production of DENV-2 in a time- and dose-dependent manner. The inhibitory effects of the peptides were also observed in other virus serotypes (DENV-1 and DENV-4), but not in DENV-3. These findings indicate the potential application of peptides targeting DENV NS1 as antiviral agents against DENV infection.
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Rodriguez AK, Muñoz AL, Segura NA, Rangel HR, Bello F. Molecular characteristics and replication mechanism of dengue, zika and chikungunya arboviruses, and their treatments with natural extracts from plants: An updated review. EXCLI JOURNAL 2019; 18:988-1006. [PMID: 31762724 PMCID: PMC6868920 DOI: 10.17179/excli2019-1825] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 10/29/2019] [Indexed: 12/11/2022]
Abstract
Viruses transmitted by arthropods (arboviruses) are the etiological agents of several human diseases with worldwide distribution; including dengue (DENV), zika (ZIKV), yellow fever (YFV), and chikungunya (CHIKV) viruses. These viruses are especially important in tropical and subtropical regions; where, ZIKV and CHIKV are involved in epidemics worldwide, while the DENV remains as the biggest problem in public health. Factors, such as, environmental conditions promote the distribution of vectors, deficiencies in health services, and lack of effective vaccines, guarantee the presence of these vector-borne diseases. Treatment against these viral diseases is only palliative since available therapies formulated lack to demonstrate specific antiviral activity and vaccine candidates fail to demonstrate enough effectiveness. The use of natural products, as therapeutic tools, is an ancestral practice in different cultures. According to WHO 80 % of the population of some countries from Africa and Asia depend on the use of traditional medicines to deal with some diseases. Molecular characteristics of these viruses are important in determining its cellular pathogenesis, emergence, and dispersion mechanisms, as well as for the development of new antivirals and vaccines to control strategies. In this review, we summarize the current knowledge of the molecular structure and replication mechanisms of selected arboviruses, as well as their mechanism of entry into host cells, and a brief overview about the potential targets accessed to inhibit these viruses in vitro and a summary about their treatment with natural extracts from plants.
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Affiliation(s)
| | - Ana Luisa Muñoz
- Faculty of Science, Universidad Antonio Nariño (UAN), Bogotá, 110231, Colombia
| | - Nidya Alexandra Segura
- Faculty of Science, Universidad Pedagógica y Tecnológica de Colombia, Tunja 150003, Colombia
| | - Héctor Rafael Rangel
- Laboratory of Molecular Virology, Instituto Venezolano de Investigaciones Científicas, Caracas, 1204, Venezuela
| | - Felio Bello
- Faculty of Agricultural and Livestock Sciences, Program of Veterinary Medicine, Universidad de La Salle, Bogotá, 110131, Colombia
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Sanaki T, Wakabayashi M, Yoshioka T, Yoshida R, Shishido T, Hall WW, Sawa H, Sato A. Inhibition of dengue virus infection by 1-stearoyl-2-arachidonoyl-phosphatidylinositol in vitro. FASEB J 2019; 33:13866-13881. [PMID: 31638831 DOI: 10.1096/fj.201901095rr] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Dengue fever is an acute febrile infectious disease caused by dengue virus (DENV). Despite the significant public health concerns posed by DENV, there are currently no effective anti-DENV therapeutic agents. To develop such drugs, a better understanding of the detailed mechanisms of DENV infection is needed. Both lipid metabolism and lipid synthesis are activated in DENV-infected cells, so we used lipid screening to identify potential antiviral lipid molecules. We identified 1-stearoyl-2-arachidonoyl-phosphatidylinositol (SAPI), which is the most abundant endogenous phosphatidylinositol (PI) molecular species, as an anti-DENV lipid molecule. SAPI suppressed the cytopathic effects induced by DENV2 infection as well as the replication of all DENV serotypes without inhibiting the entry of DENV2 into host cells. However, no other PI molecular species or PI metabolites, including lysophosphatidylinositols and phosphoinositides, displayed anti-DENV2 activity. Furthermore, SAPI suppressed the production of DENV2 infection-induced cytokines and chemokines, including C-C motif chemokine ligand (CCL)5, CCL20, C-X-C chemokine ligand 8, IL-6, and IFN-β. SAPI also suppressed the TNF-α production induced by LPS stimulation in macrophage cells differentiated from THP-1 cells. Our results demonstrated that SAPI is an endogenous inhibitor of DENV and modulated inflammatory responses in DENV2-infected cells, at least in part via TLR 4.-Sanaki, T., Wakabayashi, M., Yoshioka, T., Yoshida, R., Shishido, T., Hall, W. W., Sawa, H., Sato, A. Inhibition of dengue virus infection by 1-stearoyl-2-arachidonoyl-phosphatidylinositol in vitro.
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Affiliation(s)
- Takao Sanaki
- Drug Discovery and Disease Research Laboratory, Osaka, Japan.,Division of Anti-Virus Drug Research, Hokkaido University, Sapporo, Japan
| | - Masato Wakabayashi
- Biomarker Research and Development Department, Shionogi and Company, Limited, Osaka, Japan
| | - Takeshi Yoshioka
- Biomarker Research and Development Department, Shionogi and Company, Limited, Osaka, Japan
| | - Ryu Yoshida
- Drug Discovery and Disease Research Laboratory, Osaka, Japan
| | - Takao Shishido
- Drug Discovery and Disease Research Laboratory, Osaka, Japan
| | - William W Hall
- Global Institution for Collaborative Research and Education (Gi-CoRE), Hokkaido University, Sapporo, Japan.,Global Virus Network, Baltimore, Maryland, USA; and.,Center for Research in Infectious Diseases, University College of Dublin, Dublin, Ireland
| | - Hirofumi Sawa
- Global Institution for Collaborative Research and Education (Gi-CoRE), Hokkaido University, Sapporo, Japan.,Global Virus Network, Baltimore, Maryland, USA; and.,Division of Molecular Pathobiology, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Akihiko Sato
- Drug Discovery and Disease Research Laboratory, Osaka, Japan.,Division of Anti-Virus Drug Research, Hokkaido University, Sapporo, Japan
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Faheem M, Barbosa Lima JC, Jamal SB, Silva PA, Barbosa JARG. An insight into dengue virus proteins as potential drug/vaccine targets. Future Virol 2019. [DOI: 10.2217/fvl-2019-0107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dengue virus (DENV) is an arbovirus that belongs to family flaviviridae. Its genome is composed of a single stranded RNA molecule that encodes a single polyprotein. The polyprotein is processed by viral and cellular proteases to generate ten viral proteins. There are four antigenically distinct serotypes of DENV (DENV1, DENV2, DENV3 and DENV4), which are genetically related. Although protein variability is a major problem in dengue treatment, the functional and structural studies of individual proteins are equally important in treatment development. The data accumulated on dengue proteins are significant to provide detailed understanding of viral infection, replication, host-immune evasion and pathogenesis. In this review, we summarized the detailed current knowledge about DENV proteins.
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Affiliation(s)
- Muhammad Faheem
- Laboratory of Biophysics, Department of Cellular Biology, University of Brasilia, Brasilia-DF 70910-900, Brazil
- Post-graduate program of Genomics Sciences & Biotechnology, Catholic University of Brasilia, Brasília-DF 70790-160, Brazil
| | - Jônatas Cunha Barbosa Lima
- Laboratory of Biophysics, Department of Cellular Biology, University of Brasilia, Brasilia-DF 70910-900, Brazil
| | - Syed Babar Jamal
- Department of Biological Sciences, National University of Medical Sciences, The Mall road, Rawalpindi, Punjab 46000, Pakistan
| | - Paula Andreia Silva
- Post-graduate program of Genomics Sciences & Biotechnology, Catholic University of Brasilia, Brasília-DF 70790-160, Brazil
| | - João Alexandre Ribeiro Gonçalves Barbosa
- Laboratory of Biophysics, Department of Cellular Biology, University of Brasilia, Brasilia-DF 70910-900, Brazil
- Post-graduate program of Genomics Sciences & Biotechnology, Catholic University of Brasilia, Brasília-DF 70790-160, Brazil
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26
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Jasso-Miranda C, Herrera-Camacho I, Flores-Mendoza LK, Dominguez F, Vallejo-Ruiz V, Sanchez-Burgos GG, Pando-Robles V, Santos-Lopez G, Reyes-Leyva J. Antiviral and immunomodulatory effects of polyphenols on macrophages infected with dengue virus serotypes 2 and 3 enhanced or not with antibodies. Infect Drug Resist 2019; 12:1833-1852. [PMID: 31303775 PMCID: PMC6611719 DOI: 10.2147/idr.s210890] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 05/26/2019] [Indexed: 12/30/2022] Open
Abstract
Background: There is a lack of specific antiviral therapy against dengue virus (DENV) in current use. Therefore, a great proportion of dengue cases progress to severe clinical forms due to a complex interplay between virus and host immune response. It has been hypothesized that heterotypic non-neutralizing antibodies enhance DENV infection in phagocytic cells, and this induces an inflammatory response that is involved in the pathogenesis of severe dengue. Purpose: To identify the antiviral and immunomodulatory effects of polyphenols on dengue virus infection. Methods: Human U937-DC-SIGN macrophages were infected with DENV serotypes 2 or 3 in the presence or not of enhancing antibody 4G2. Viral titers and the secretion of tumor necrosis factor-alpha, IL-6, IL-10 and interferon-alpha were analyzed timely. Results: DENV infection alone induced high production of IL-6 and TNF-α, but in the presence of 4G2 antibody, viral titers and TNF-α secretion were potentiated. Based on anti-inflammatory antecedents, the polyphenols curcumin, fisetin, resveratrol, apigenin, quercetin and rutin were tested for antiviral and immunomodulatory properties. Only quercetin and fisetin inhibited DENV-2 and DENV-3 infection in the absence or presence of enhancing antibody (>90%, p<0.001); they also inhibited TNF-α and IL-6 secretion (p<0.001). Conclusion: Quercetin and fisetin down-regulate the production of proinflammatory cytokines induced by DENV infection enhanced by antibodies a mechanism involved in severe dengue.
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Affiliation(s)
- Carolina Jasso-Miranda
- Laboratory of Immunology and Virology, East Biomedical Research Center, Mexican Institute of Social Security (IMSS), CP 74360 Metepec, Puebla, México.,Laboratory of Biochemistry and Molecular Biology, Center of Chemistry, Institute of Sciences, Meritorious Autonomous University of Puebla, CP 72570 San Manuel, Puebla, Mexico
| | - Irma Herrera-Camacho
- Laboratory of Biochemistry and Molecular Biology, Center of Chemistry, Institute of Sciences, Meritorious Autonomous University of Puebla, CP 72570 San Manuel, Puebla, Mexico
| | - Lilian Karem Flores-Mendoza
- Department of Chemical, Biologic and Agricultural Sciences, Science and Enginery Division, University of Sonora, CP 85880 Navojoa, Sonora, Mexico
| | - Fabiola Dominguez
- Laboratory of Immunology and Virology, East Biomedical Research Center, Mexican Institute of Social Security (IMSS), CP 74360 Metepec, Puebla, México
| | - Veronica Vallejo-Ruiz
- Laboratory of Immunology and Virology, East Biomedical Research Center, Mexican Institute of Social Security (IMSS), CP 74360 Metepec, Puebla, México
| | | | - Victoria Pando-Robles
- Infectious Disease Research Center, National Institute of Public Health, CP 62100 Cuernavaca, Morelos, Mexico
| | - Gerardo Santos-Lopez
- Laboratory of Immunology and Virology, East Biomedical Research Center, Mexican Institute of Social Security (IMSS), CP 74360 Metepec, Puebla, México
| | - Julio Reyes-Leyva
- Laboratory of Immunology and Virology, East Biomedical Research Center, Mexican Institute of Social Security (IMSS), CP 74360 Metepec, Puebla, México
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27
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Vora J, Patel S, Athar M, Sinha S, Chhabria MT, Jha PC, Shrivastava N. Pharmacophore modeling, molecular docking and molecular dynamics simulation for screening and identifying anti-dengue phytocompounds. J Biomol Struct Dyn 2019; 38:1726-1740. [PMID: 31057055 DOI: 10.1080/07391102.2019.1615002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Dengue is a fast spreading mosquito borne viral disease that poses a serious threat to human health. Lack of therapeutic drugs and vaccines signify that more resources need to be explored. Accumulated evidence has suggested that plants offer a vast reservoir for antiviral drug discovery which are safe for human consumption. Plant-based drug discovery is a complex and time-consuming process as plants possess rich repository of chemically diverse compounds. Various in silico methods can make this process simple and economic. We, therefore, performed pharmacophore mapping, molecular docking, molecular dynamics (MD) simulations and ADME (absorption, distribution, metabolism, excretion) prediction to screen potential candidates against dengue. In particular, combined pharmacophore mapping and molecular docking were used to prioritize the potentially active ligands from a ligand library. Biological activities of plant based ligands were predicted using 3D-QSAR pharmacophore modeling. Interaction between proteins, namely, envelope G protein, NS2B/NS3 protease, NS5 methyltransferase, NS1, NS5 polymerase and active plant-based ligands (pIC50 > 5.1) were analyzed using molecular docking. Best docked complex, namely, envelope G protein-mulberroside C, NS2B-NS3 protease-curcumin, NS5 methyltransferase-chebulic acid, NS1-mulberroside A, NS5 methyltransferase-punigluconin and NS5 methyltransferase-chebulic acid were further subjected to MD simulations study to assess the fluctuation and conformational changes during protein-ligand interaction. ADME studies were performed to assess their drug-likeness properties. Collectively, these in silico results helped to identify the potential plant-based hits against the various receptors of dengue virus which can be further validated by bioactivity-based experiments.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Jaykant Vora
- B. V. Patel Pharmaceutical Education and Research Development (PERD) Centre, Ahmedabad, India.,Department of Life science, Gujarat University, Ahmedabad, India
| | - Shivani Patel
- Department of Pharmaceutical Chemistry, L. M. College of Pharmacy, Ahmedabad, India
| | - Mohd Athar
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar, India
| | - Sonam Sinha
- B. V. Patel Pharmaceutical Education and Research Development (PERD) Centre, Ahmedabad, India.,Department of Life science, Gujarat University, Ahmedabad, India
| | - Mahesh T Chhabria
- Department of Pharmaceutical Chemistry, L. M. College of Pharmacy, Ahmedabad, India
| | - Prakash C Jha
- Centre for Applied Chemistry, Central University of Gujarat, Gandhinagar, India
| | - Neeta Shrivastava
- B. V. Patel Pharmaceutical Education and Research Development (PERD) Centre, Ahmedabad, India
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28
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Chao CH, Wu WC, Lai YC, Tsai PJ, Perng GC, Lin YS, Yeh TM. Dengue virus nonstructural protein 1 activates platelets via Toll-like receptor 4, leading to thrombocytopenia and hemorrhage. PLoS Pathog 2019; 15:e1007625. [PMID: 31009511 PMCID: PMC6497319 DOI: 10.1371/journal.ppat.1007625] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 05/02/2019] [Accepted: 02/07/2019] [Indexed: 12/12/2022] Open
Abstract
Dengue virus (DENV) infection, the most common mosquito-transmitted viral infection, can cause a range of diseases from self-limiting dengue fever to life-threatening dengue hemorrhagic fever and shock syndrome. Thrombocytopenia is a major characteristic observed in both mild and severe dengue disease and is significantly correlated with the progression of dengue severity. Previous studies have shown that DENV nonstructural protein 1 (NS1), which can be secreted into patients’ blood, can stimulate immune cells via Toll-like receptor 4 (TLR4) and can cause endothelial leakage. However, it is unclear whether DENV NS1 can directly induce platelet activation or cause thrombocytopenia during DENV infection. In this study, we first demonstrated that DENV but not Zika virus cell culture supernatant could induce P-selectin expression and phosphatidylserine (PS) exposure in human platelets, both of which were abolished when NS1 was depleted from the DENV supernatant. Similar results were found using recombinant NS1 from all four serotypes of DENV, and those effects were blocked in the presence of anti-NS1 F(ab’)2, anti-TLR4 antibody, a TLR4 antagonist (Rhodobacter sphaeroides lipopolysaccharide, LPS-Rs) and a TLR4 signaling inhibitor (TAK242), but not polymyxin B (an LPS inhibitor). Moreover, the activation of platelets by DENV NS1 promoted subthreshold concentrations of adenosine diphosphate (ADP)-induced platelet aggregation and enhanced platelet adhesion to endothelial cells and phagocytosis by macrophages. Finally, we demonstrated that DENV-induced thrombocytopenia and hemorrhage were attenuated in TLR4 knockout and wild-type mice when NS1 was depleted from DENV supernatant. Taken together, these results suggest that the binding of DENV NS1 to TLR4 on platelets can trigger its activation, which may contribute to thrombocytopenia and hemorrhage during dengue infection. Over the past 50 years, dengue has been a continuing global threat, with no effective vaccine or specific antiviral drug. Dengue infection causes a wide range of outcomes, from fever-like symptoms to severe dengue hemorrhagic fever. Thrombocytopenia, a reduction in platelet count, is a common feature observed in both mild and severe dengue and is correlated with disease severity. In this study, we used dengue viral supernatant or DENV recombinant NS1 protein to stimulate human-isolated platelets. We found that DENV NS1 could directly activate platelets through TLR4 and could further enhance platelet aggregation, adhesion to endothelial cells and phagocytosis by macrophages, which could lead to thrombocytopenia. We also proved that both NS1 and TLR4 are critical for DENV-induced thrombocytopenia and hemorrhage using a DENV-induced hemorrhagic mouse model. Our study reveals a new pathogenic role of NS1 during dengue infection and highlights that NS1 should be a topic of attention in the development of therapeutic drugs and vaccines against dengue infection.
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Affiliation(s)
- Chiao-Hsuan Chao
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wei-Chueh Wu
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yen-Chung Lai
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Pei-Jane Tsai
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Guey-Chuen Perng
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yee-Shin Lin
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Trai-Ming Yeh
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- * E-mail:
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29
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SJATHA FITHRIYAH, CHANDRA MUSTIKA OKTIVIA, ERNAWATI DEWI BETI, MIRAWATI SUDIRO TJAHJANI. Levels of TNF-α in PBMC (Peripheral Blood Mononuclear Cells) Induced by Recombinant Non Structural 1 Protein of Dengue Virus Serotype-2 in vitro. MICROBIOLOGY INDONESIA 2019. [DOI: 10.5454/mi.13.2.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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30
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Songprakhon P, Limjindaporn T, Perng GC, Puttikhunt C, Thaingtamtanha T, Dechtawewat T, Saitornuang S, Uthaipibull C, Thongsima S, Yenchitsomanus PT, Malasit P, Noisakran S. Human glucose-regulated protein 78 modulates intracellular production and secretion of nonstructural protein 1 of dengue virus. J Gen Virol 2018; 99:1391-1406. [PMID: 30102148 DOI: 10.1099/jgv.0.001134] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Virus-host interactions play important roles in virus infection and host cellular response. Several viruses, including dengue virus (DENV), usurp host chaperones to support their amplification and survival in the host cell. We investigated the interaction of nonstructural protein 1 (NS1) of DENV with three endoplasmic reticulum-resident chaperones (i.e. GRP78, calnexin and calreticulin) to delineate their functional roles and potential binding sites for protein complex formation. GRP78 protein showed prominent association with DENV NS1 in virus-infected Huh7 cells as evidenced by co-localization and co-immunoprecipitation assays. Further studies on the functional interaction of GRP78 protein were performed by using siRNA-mediated gene knockdown in a DENV replicon transfection system. GRP78 knockdown significantly decreased intracellular NS1 production and delayed NS1 secretion but had no effect on viral RNA replication. Dissecting the important domain of GRP78 required for DENV NS1 interaction showed co-immunoprecipitation of DENV NS1 with a full-length and substrate-binding domain (SBD), but not an ATPase domain, of GRP78, confirming their interaction through SBD binding. Molecular dynamics simulations of DENV NS1 and human GRP78 complex revealed their potential binding sites through hydrogen and hydrophobic bonding. The majority of GRP78-binding sites were located in a β-roll domain and connector subdomains on the DENV NS1 structure involved in hydrophobic surface formation. Taken together, our findings demonstrated the roles of human GRP78 in facilitating the intracellular production and secretion of DENV NS1 as well as predicted potential binding sites between the DENV NS1 and GRP78 complex, which could have implications in the future development of target-based antiviral drugs.
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Affiliation(s)
- Pucharee Songprakhon
- 1Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Thawornchai Limjindaporn
- 2Department of Anatomy, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Guey Chuen Perng
- 3Department of Microbiology and Immunology, College of Medicine, and Center of Infectious Disease and Signaling Research, National Cheng Kung University, Tainan 70101, Taiwan, ROC
| | - Chunya Puttikhunt
- 4Medical Biotechnology Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok 10700, Thailand.,5Division of Dengue Hemorrhagic Fever Research, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | | | - Thanyaporn Dechtawewat
- 1Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Sawanan Saitornuang
- 4Medical Biotechnology Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok 10700, Thailand
| | - Chairat Uthaipibull
- 7Protein-Ligand Engineering and Molecular Biology Laboratory, Medical Molecular Biology Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Sissades Thongsima
- 8Biostatistics and Informatic Laboratory, Genome Institute, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Pa-Thai Yenchitsomanus
- 1Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Prida Malasit
- 4Medical Biotechnology Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok 10700, Thailand.,5Division of Dengue Hemorrhagic Fever Research, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Sansanee Noisakran
- 5Division of Dengue Hemorrhagic Fever Research, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand.,4Medical Biotechnology Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Bangkok 10700, Thailand
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31
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Glasner DR, Puerta-Guardo H, Beatty PR, Harris E. The Good, the Bad, and the Shocking: The Multiple Roles of Dengue Virus Nonstructural Protein 1 in Protection and Pathogenesis. Annu Rev Virol 2018; 5:227-253. [PMID: 30044715 DOI: 10.1146/annurev-virology-101416-041848] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Dengue virus (DENV) is the most prevalent medically important mosquito-borne virus in the world. Upon DENV infection of a host cell, DENV nonstructural protein 1 (NS1) can be found intracellularly as a monomer, associated with the cell surface as a dimer, and secreted as a hexamer into the bloodstream. NS1 plays a variety of roles in the viral life cycle, particularly in RNA replication and immune evasion of the complement pathway. Over the past several years, key roles for NS1 in the pathogenesis of severe dengue disease have emerged, including direct action of the protein on the vascular endothelium and triggering release of vasoactive cytokines from immune cells, both of which result in endothelial hyperpermeability and vascular leak. Importantly, the adaptive immune response generates a robust response against NS1, and its potential contribution to dengue vaccines is also discussed.
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Affiliation(s)
- Dustin R Glasner
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, California 94720-3370, USA; , , ,
| | - Henry Puerta-Guardo
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, California 94720-3370, USA; , , ,
| | - P Robert Beatty
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, California 94720-3370, USA; , , ,
| | - Eva Harris
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, California 94720-3370, USA; , , ,
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Incorporation of NS1 and prM/M are important to confer effective protection of adenovirus-vectored Zika virus vaccine carrying E protein. NPJ Vaccines 2018; 3:29. [PMID: 30062066 PMCID: PMC6057874 DOI: 10.1038/s41541-018-0072-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 05/30/2018] [Accepted: 06/04/2018] [Indexed: 01/07/2023] Open
Abstract
Current design of Zika virus (ZIKV) vaccine mainly considered envelope (E) as the major target antigen. Non-structural protein NS1 was seldom considered. Herein, we generated three adenovirus-vectored vaccines carrying E (Ad2-E), or premembrane/membrane (prM/M) with E (Ad2-prME), or NS1 in addition to prM/M with E (Ad2-prME-NS1). Ad2-prME induced higher neutralizing antibody response to ZIKV than Ad2-E, suggesting prM/M is important for the folding of immunogenic E. Most intriguingly, Ad2-prME-NS1 elicited the best viral inhibition when the immune sera were added to ZIKV-infected cells. In ZIKV-challenged neonatal mice born to maternally immunized dams, Ad2-prME-NS1 conferred the best protection in preventing weight loss, neurological disorders, and viral replication. Ad2-prME also conferred significant protection but was less effective than Ad2-prME-NS1, whereas Ad2-E only alleviated neurological symptoms but did not inhibit viral replication. Our study suggested that NS1 should be considered in the design of ZIKV vaccine in addition to prM/M and E.
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Yao X, Ling Y, Guo S, Wu W, He S, Zhang Q, Zou M, Nandakumar KS, Chen X, Liu S. Tatanan A from the Acorus calamus L. root inhibited dengue virus proliferation and infections. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2018; 42:258-267. [PMID: 29655694 DOI: 10.1016/j.phymed.2018.03.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 01/08/2018] [Accepted: 03/08/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Acorus calamus l. (Acoraceae) is a well-known traditional Chinese medicinal plant, whose root are historically mainly used to treat neurodegenerative diseases, and for cholera treatment. This datum strongly indicates the antimicrobial activity of A. calamus. PURPOSE Our goal is to find the active constituents of A. calamus to treat dengue virus (DENV) infections, and to study the effects and mechanisms of these active substances. METHODS The root of A. calamus was extracted by ethanol. Mosquito larva C6/36 cells were used for DENV2 replication and transfection host. Mouse kidney fibroblast cells (BHK-21) were used as a host cell to study the infection ability of the virus. DENV2-induced cytopathic effect (CPE) and plaque assay were used to evaluate the inhibitory effect of A. calamus extracts on DENV2 infectivity inhibition. The levels of E and NS1 protein expression were measured by real-time PCR and western blot assays. RESULTS 12 compounds were isolated from ethanol extract of A. calamus root, tatanan A showed the best anti-DENV ability among these 12 compounds, which significantly alleviated DENV2-induced CPE and cytotoxicity effects, with an EC50 of 3.9 µM. In addition, RNA replication assay further confirmed the antivirus ability of tatanan A. Time-addition assay showed that tatanan A affected the early stage of viral RNA replication, which in turn inhibited mRNA and protein levels of DENV2. CONCLUSIONS These results demonstrated the anti-DENV2 effect of tatanan A, in inhibiting DENV2 RNA replication and infections. In summary, tatanan A was found to be a novel natural DENV inhibitor and a potential candidate for the treatment of DENV infectious disease.
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Affiliation(s)
- Xingang Yao
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Yun Ling
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, PR China.
| | - Songxin Guo
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Wenyu Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou 510060, PR China
| | - Shijun He
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Qing Zhang
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, PR China
| | - Min Zou
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Kutty Selva Nandakumar
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Xiaoguang Chen
- School of Public Health, Southern Medical University, Southern Medical University, Guangzhou 510515, PR China
| | - Shuwen Liu
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China.
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Moi ML, Ami Y, Muhammad Azami NA, Shirai K, Yoksan S, Suzaki Y, Kitaura K, Lim CK, Saijo M, Suzuki R, Takasaki T, Kurane I. Marmosets (Callithrix jacchus) as a non-human primate model for evaluation of candidate dengue vaccines: induction and maintenance of specific protective immunity against challenges with clinical isolates. J Gen Virol 2017; 98:2955-2967. [PMID: 29160199 DOI: 10.1099/jgv.0.000913] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Dengue virus (DENV) is one of the major infectious diseases in tropical regions and approximately half of the world population is at risk of infection. Vaccines would offer an effective control measure against this disease. We previously reported on the utility of marmosets as an animal model for studying primary and secondary dengue infections. Infected marmosets consistently develop viraemia and antibody kinetics that reflect those of patients with dengue. Thus, it is important to determine the utility of marmosets as an animal model for demonstrating vaccine efficacy. In this study, marmosets were inoculated with candidate vaccine and parent strains and challenged with a clinical DENV strain. The viraemia and antibody kinetics in these marmosets were determined. Marmosets consistently develop lower viraemia with an attenuated vaccine strain. During secondary challenge, the IgM response was delayed, whereas the IgG levels rose rapidly, indicating a secondary antibody response. The neutralizing activities against the homotypic serotype were high; all marmosets were protected against viraemia following secondary inoculation. The viraemia markers and antibody responses were consistent with those of human DENV infection and vaccinees. These results demonstrate the utility of marmosets as an animal model for the study of vaccine efficacy.
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Affiliation(s)
- Meng Ling Moi
- Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Yasushi Ami
- Division of Experimental Animal Research, National Institute of Infectious Diseases, Musashimurayama, Tokyo, Japan
| | | | - Kenji Shirai
- Department of Rheumatology and Clinical Immunology, Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, National Hospital Organization, Kanagawa, Japan
| | - Sutee Yoksan
- Institute of Molecular Biosciences, Mahidol University, Salaya, Nakhon Pathom, Thailand
| | - Yuriko Suzaki
- Division of Experimental Animal Research, National Institute of Infectious Diseases, Musashimurayama, Tokyo, Japan
| | - Kazutaka Kitaura
- Department of Rheumatology and Clinical Immunology, Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, National Hospital Organization, Kanagawa, Japan
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Ryuji Suzuki
- Department of Rheumatology and Clinical Immunology, Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, National Hospital Organization, Kanagawa, Japan
| | | | - Ichiro Kurane
- National Institute of Infectious Diseases, Tokyo, Japan
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35
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Sprokholt JK, Kaptein TM, van Hamme JL, Overmars RJ, Gringhuis SI, Geijtenbeek TBH. RIG-I-like Receptor Triggering by Dengue Virus Drives Dendritic Cell Immune Activation and T H1 Differentiation. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2017; 198:4764-4771. [PMID: 28507028 DOI: 10.4049/jimmunol.1602121] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 04/13/2017] [Indexed: 01/07/2023]
Abstract
Dengue virus (DENV) causes 400 million infections annually and is one of several viruses that can cause viral hemorrhagic fever, which is characterized by uncontrolled immune activation resulting in high fever and internal bleeding. Although the underlying mechanisms are unknown, massive cytokine secretion is thought to be involved. Dendritic cells (DCs) are the main target cells of DENV, and we investigated their role in DENV-induced cytokine production and adaptive immune responses. DENV infection induced DC maturation and secretion of IL-1β, IL-6, and TNF. Inhibition of DENV RNA replication abrogated these responses. Notably, silencing of RNA sensors RIG-I or MDA5 abrogated DC maturation, as well as cytokine responses by DENV-infected DCs. DC maturation was induced by type I IFN responses because inhibition of IFN-α/β receptor signaling abrogated DENV-induced DC maturation. Moreover, DENV infection of DCs resulted in CCL2, CCL3, and CCL4 expression, which was abrogated after RIG-I and MDA5 silencing. DCs play an essential role in TH cell differentiation, and we show that RIG-I and MDA5 triggering by DENV leads to TH1 polarization, which is characterized by high levels of IFN-γ. Notably, cytokines IL-6, TNF, and IFN-γ and chemokines CCL2, CCL3, and CCL4 have been associated with disease severity, endothelial dysfunction, and vasodilation. Therefore, we identified RIG-I and MDA5 as critical players in innate and adaptive immune responses against DENV, and targeting these receptors has the potential to decrease hemorrhagic fever in patients.
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Affiliation(s)
- Joris K Sprokholt
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, the Netherlands; and
- Amsterdam Infection & Immunity Institute, 1105 AZ Amsterdam, the Netherlands
| | - Tanja M Kaptein
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, the Netherlands; and
- Amsterdam Infection & Immunity Institute, 1105 AZ Amsterdam, the Netherlands
| | - John L van Hamme
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, the Netherlands; and
- Amsterdam Infection & Immunity Institute, 1105 AZ Amsterdam, the Netherlands
| | - Ronald J Overmars
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, the Netherlands; and
- Amsterdam Infection & Immunity Institute, 1105 AZ Amsterdam, the Netherlands
| | - Sonja I Gringhuis
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, the Netherlands; and
- Amsterdam Infection & Immunity Institute, 1105 AZ Amsterdam, the Netherlands
| | - Teunis B H Geijtenbeek
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, the Netherlands; and
- Amsterdam Infection & Immunity Institute, 1105 AZ Amsterdam, the Netherlands
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36
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Recombinant heat shock protein 78 enhances enterovirus 71 propagation in Vero cells and is induced in SK-N-SH cells during the infection. Arch Virol 2017; 162:1649-1660. [DOI: 10.1007/s00705-017-3287-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Accepted: 02/04/2017] [Indexed: 12/23/2022]
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