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Siew ZY, Tan YF, Iswara RP, Wong SF, Wong ST, Tan BK, Leong PP, Tan CW, Wang LF, Leong CO, Voon K. Human cytokeratin 1 plays a role in the interaction of Pteropine orthoreovirus with Hek293 cells but not HeLa cells. Microbes Infect 2024; 26:105243. [PMID: 38380604 DOI: 10.1016/j.micinf.2023.105243] [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: 07/21/2023] [Revised: 09/15/2023] [Accepted: 10/26/2023] [Indexed: 02/22/2024]
Abstract
Pteropine orthoreovirus (PRV) causes respiratory tract infections in humans. Despite its emergence as a zoonotic and respiratory virus, little is known about its cell tropism, which hampers progress in fully understanding its pathogenesis in humans. Hek293 cells are most susceptible to PRV infection, while HeLa cells are the least. Human cytokeratin 1 (CK1) was identified as the protein that interacts with PRV. The immunofluorescence assay and qPCR results revealed prior treatment with anti-CK1 may provide Hek293 cells protection against PRV. The KRT1-knockout Hek293 cells were less susceptible to PRV infection. Further study into the pathogenesis of PRV in humans is needed.
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Affiliation(s)
- Zhen Yun Siew
- School of Pharmacy, University of Nottingham Malaysia, Semenyih, Malaysia
| | - Yeh Fong Tan
- School of Medicine, International Medical University, Kuala Lumpur, Malaysia; Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan; Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, Taiwan
| | | | - Shew Fung Wong
- School of Medicine, International Medical University, Kuala Lumpur, Malaysia; Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur, Malaysia
| | - Siew Tung Wong
- School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Boon Keat Tan
- School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Pooi Pooi Leong
- Faculty of Medicine and Health Sciences, University Tunku Abdul Rahman, Sg Long, Malaysia
| | - Chee Wah Tan
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, 169857, Singapore; Infectious Diseases Translational Research Programme, Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Lin-Fa Wang
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, 169857, Singapore
| | - Chee Onn Leong
- Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur, Malaysia; AGTC Genomics, Bukit Jalil, Kuala Lumpur 57000, Malaysia
| | - Kenny Voon
- School of Pharmacy, University of Nottingham Malaysia, Semenyih, Malaysia; School of Medicine, International Medical University, Kuala Lumpur, Malaysia.
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The Current Landscape of Bioactive Molecules against DENV: A Systematic Review. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2023; 2023:2236210. [PMID: 36818227 PMCID: PMC9937760 DOI: 10.1155/2023/2236210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 01/09/2023] [Accepted: 01/23/2023] [Indexed: 02/12/2023]
Abstract
With a 30-fold increase in incidence over the previous 50 years, dengue fever is now the most widespread viral disease transmitted by mosquitoes in the world. The intricate interaction of the human defense system, hereditary predisposition, and specific bitterness elements is more likely to be the pathogenesis of dengue. There are presently no viable treatments for dengue. Synthetic drugs which are used against this ailment also show major side effects. There must be a deeper understanding of the underlying mechanism generating severe symptoms to develop auguring markers, cutting-edge diagnostics, and treatments and finally a well-rounded and secure antiserum. Hence, the aim is to search for safer and more potent drugs derived from plants. Plants or herbs are mainly targeting replication or its enzyme or specific stereotypes, though an exact mechanism of phytoconstituents interfering with the viral replication is still undiscovered. The present attempt provided the update with the objective to bringing up forward pathophysiological eventualities involved in dengue virus along with the naturally derived treatment relevant to provide the impregnable therapy by evading the noxious symptoms for dengue fever. Governor's plum, Cryptocarya chartacea, magnolia berry, and Chinese ginger are such plants exhibiting many effective phytoconstituents against DENV and can be further explored for novel drug discovery by medicinal scientists.
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Studies on the antiviral activity of chebulinic acid against dengue and chikungunya viruses and in silico investigation of its mechanism of inhibition. Sci Rep 2022; 12:10397. [PMID: 35729191 PMCID: PMC9213501 DOI: 10.1038/s41598-022-13923-6] [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: 10/19/2021] [Accepted: 05/30/2022] [Indexed: 11/08/2022] Open
Abstract
Chebulinic acid (CA), originally isolated from the flower extract of the plant Terminalia chebula, has been shown to inhibit infection of herpes simplex virus-2 (HSV-2), suggestively by inhibiting the host entry step of viral infection. Like HSV-2, the dengue virus (DENV) and chikungunya virus (CHIKV) also use receptor glycosaminoglycans (GAG) to gain host entry, therefore, the activity of CA was tested against these viruses. Co-treatment of 8 µM CA with DENV-2 caused 2 log decrease in the virus titer (4.0 log10FFU/mL) at 120 h post infection, compared to virus control (5.95 log10FFU/mL). In contrast, no inhibitory effect of CA was observed against CHIKV infection under any condition. The mechanism of action of CA was investigated in silico by employing DENV-2 and CHIKV envelope glycoproteins. During docking, CA demonstrated equivalent binding at multiple sites on DENV-2 envelope protein, including GAG binding site, which have previously been reported to play a crucial role in host attachment and fusion, indicating blocking of these sites. However, CA did not show binding to the GAG binding site on envelope protein-2 of CHIKV. The in vitro and in silico findings suggest that CA possesses the ability to inhibit DENV-2 infection at the entry stage of its infection cycle and may be developed as a potential therapeutic agent against it.
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Cell surface heat shock protein-mediated entry of tumor cell-adapted rotavirus into U-937 cells. Folia Microbiol (Praha) 2021; 66:623-638. [PMID: 33950511 DOI: 10.1007/s12223-020-00845-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 12/21/2020] [Indexed: 10/21/2022]
Abstract
Rotaviruses infect cells by binding to specific cell surface molecules including gangliosides, heat shock protein cognate protein 70 (Hsc70), and some integrins. The characterization of cell surface receptors defining viral tropism is crucial for inhibiting entry into the normal cells or the cancer cells. In the present work, several tumor cell-adapted rotavirus isolates were tested for their interaction with some heat shock proteins (HSPs) present in the U-937 cells, derived from a human pleural effusion (histiocytic lymphoma monocyte). This interaction was examined by virus overlay protein-binding (VOPB), immunochemistry, immuno-dot blot assays, and flow cytometry. The results indicated that the rotavirus isolates studied were able to infect U937 cells by interacting with Hsp90, Hsp70, Hsp60, Hsp40, Hsc70, protein disulfide isomerase (PDI), and integrin β3, which are implicated in cellular proliferation, differentiation, and cancer development. Interestingly, these cellular proteins were found to be associated in lipid microdomains (rafts), facilitating in this way eventual sequential interactions of the rotavirus particles with the cell surface receptors. The rotavirus tropism for U937 cells through the use of these cell surface proteins made this rotavirus isolates an attractive target for the development of oncolytic strategies in the context of alternative and complementary treatment of cancer.
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Kavathekar VK, Dhanavade MJ, Sonawane KD, Balakrishnan A. Role of cell surface vimentin in Chandipura virus replication in Neuro-2a cells. Virus Res 2020; 285:198014. [PMID: 32418904 PMCID: PMC7270567 DOI: 10.1016/j.virusres.2020.198014] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 05/03/2020] [Accepted: 05/04/2020] [Indexed: 01/31/2023]
Abstract
Study of virus host interaction helps to understand the mechanism of virus life cycle. Chandipura virus is associated with the encephalitis among the children’s in India. Chandipura virus co-localizes with surface vimentin on Neuro-2a cells. Surface vimentin on Neuro-2a cells is involved in interaction with Chandipura virus.
The neurotropic behavior of Chandipura virus (CHPV) is partly understood in experimental animals. Under in vitro conditions, neuronal cells could be a useful tool to study the CHPV interaction with neuronal proteins. The information gathered from such studies will help to design the new therapeutics for CHPV infection. This study identified the surface vimentin protein involved in adsorption of CHPV on Neuro-2a cell line (mouse neuroblastoma cells). The decrease in CHPV infectivity to Neuro-2a cells was observed in the presence of recombinant vimentin or anti-vimentin antibody. Vimentin mRNA expression remains unaltered in CHPV infected Neuro-2a cells. Furthermore, in silico analysis predicted the residues in vimentin and CHPV glycoprotein (G); probably involved in cell-virus interactions. Overall, we conclude that surface vimentin in Neuro-2a cells interact with CHPV and facilitate the binding of CHPV to the cells; it could be acting as a co-receptor for the CHPV. Further investigation is necessary to confirm the exact role of vimentin in CHPV infection in neuronal cells.
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Affiliation(s)
- Vishal K Kavathekar
- National Institute of Virology, Kerala Unit, TDMC Hospital complex, Vandanam, Alappuzha, Kerala, 688005, India
| | - Maruti J Dhanavade
- Deartment of Biochemistry, Shivaji University, Vidyanagari, Kolhapur, Maharashtra, 416004, India
| | - Kailas D Sonawane
- Deartment of Biochemistry, Shivaji University, Vidyanagari, Kolhapur, Maharashtra, 416004, India
| | - Anukumar Balakrishnan
- National Institute of Virology, Kerala Unit, TDMC Hospital complex, Vandanam, Alappuzha, Kerala, 688005, India.
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Gellért Á, Pósa T, Fábián A, Szabó L, Bóka K, Forró B, Salánki K, Drahos L, Tóth E, Juhász A, Balázs E. A single point mutation on the cucumber mosaic virus surface induces an unexpected and strong interaction with the F1 complex of the ATP synthase in Nicotiana clevelandii plants. Virus Res 2018; 251:47-55. [PMID: 29730309 DOI: 10.1016/j.virusres.2018.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 04/27/2018] [Accepted: 05/03/2018] [Indexed: 11/15/2022]
Abstract
A previous study showed that a single amino acid difference in the cucumber mosaic virus (CMV) capsid protein (CP) elicits unusual symptoms. The wild-type strain (CMV-R) induces green mosaic symptoms and malformation while the mutant strain (CMV-R3E79R) causes chlorotic lesions on inoculated leaves and strong stunting with necrosis on systemic leaves. Virion preparations of CMV-R and CMV-R3E79R were partially purified from Nicotiana clevelandii A. Gray and analysed by two-dimensional gel electrophoresis. Their separated protein patterns showed remarkable differences at the 50-75 kDa range, both in numbers and intensity of spots, with more protein spots for the mutant CMV. Mass spectrometry analysis demonstrated that the virion preparations contained host proteins identified as ATP synthase alpha and beta subunits as well as small and large Rubisco subunits, respectively. Virus overlay protein binding assay (VOPBA), immunogold electron microscopy and modified ELISA experiments were used to prove the direct interaction between the virus particle and the N. clevelandii ATP synthase F1 motor complex. Protein-protein docking study revealed that the electrostatic change in the mutant CMV can introduce stronger interactions with ATP synthase F1 complex. Based on our findings we suggest that the mutation present in the CP can have a direct effect on the long-distance movement and systemic symptoms. In molecular view the mutant CMV virion can lethally block the rotation of the ATP synthase F1 motor complex which may lead to cell apoptosis, and finally to plant death.
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Affiliation(s)
- Ákos Gellért
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary.
| | - Tímea Pósa
- Plant Protection Institute, Georgikon Faculty, Pannon University, Keszthely, Hungary
| | - Attila Fábián
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - László Szabó
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Károly Bóka
- Department of Plant Anatomy, Eötvös Loránd University, Budapest, Hungary
| | - Barbara Forró
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - Katalin Salánki
- Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - László Drahos
- MS Proteomics Research Group, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Eszter Tóth
- MS Proteomics Research Group, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Angéla Juhász
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Ervin Balázs
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
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7
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Bovine Lactoferrin Inhibits Dengue Virus Infectivity by Interacting with Heparan Sulfate, Low-Density Lipoprotein Receptor, and DC-SIGN. Int J Mol Sci 2017; 18:ijms18091957. [PMID: 28895925 PMCID: PMC5618606 DOI: 10.3390/ijms18091957] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 08/27/2017] [Accepted: 09/06/2017] [Indexed: 12/13/2022] Open
Abstract
Bovine lactoferrin (bLF) presents in milk and has been shown to inhibit several viral infections. Effective drugs are unavailable for the treatment of dengue virus (DENV) infection. In this study, we evaluated the antiviral effect of bLF against DENV infection in vivo and in vitro. Bovine LF significantly inhibited the infection of the four serotypes of DENV in Vero cells. In the time-of-drug addition test, DENV-2 infection was remarkably inhibited when bLF was added during or prior to the occurrence of virus attachment. We also revealed that bovine LF blocks binding between DENV-2 and the cellular membrane by interacting with heparan sulfate (HS), dendritic cell-specific intercellular adhesion molecule 3-grabbing non-integrin (DC-SIGN), and low-density lipoprotein receptors (LDLR). In addition, bLF inhibits DENV-2 infection and decreases morbidity in a suckling mouse challenge model. This study supports the finding that bLF may inhibit DENV infection by binding to the potential DENV receptors.
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8
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Guzman E, Taylor G, Hope J, Herbert R, Cubillos-Zapata C, Charleston B. Transduction of skin-migrating dendritic cells by human adenovirus 5 occurs via an actin-dependent phagocytic pathway. J Gen Virol 2016; 97:2703-2718. [PMID: 27528389 PMCID: PMC5078831 DOI: 10.1099/jgv.0.000581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Dendritic cells (DC) are central to the initiation of immune responses, and various approaches have been used to target vaccines to DC in order to improve immunogenicity. Cannulation of lymphatic vessels allows for the collection of DC that migrate from the skin. These migrating DC are involved in antigen uptake and presentation following vaccination. Human replication-deficient adenovirus (AdV) 5 is a promising vaccine vector for delivery of recombinant antigens. Although the mechanism of AdV attachment and penetration has been extensively studied in permissive cell lines, few studies have addressed the interaction of AdV with DC. In this study, we investigated the interaction of bovine skin-migrating DC and replication-deficient AdV-based vaccine vectors. We found that, despite lack of expression of Coxsackie B–Adenovirus Receptor and other known adenovirus receptors, AdV readily enters skin-draining DC via an actin-dependent endocytosis. Virus exit from endosomes was pH independent, and neutralizing antibodies did not prevent virus entry but did prevent virus translocation to the nucleus. We also show that combining adenovirus with adjuvant increases the absolute number of intracellular virus particles per DC but not the number of DC containing intracellular virus. This results in increased trans-gene expression and antigen presentation. We propose that, in the absence of Coxsackie B–Adenovirus Receptor and other known receptors, AdV5-based vectors enter skin-migrating DC using actin-dependent endocytosis which occurs in skin-migrating DC, and its relevance to vaccination strategies and vaccine vector targeting is discussed.
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Affiliation(s)
- Efrain Guzman
- The Pirbright Institute, Ash Road, Woking, Surrey GU240NF, UK
| | | | - Jayne Hope
- The Roslin Institute University of Edinburgh, Easter Bush, Midlothian EH259RG, UK
| | - Rebecca Herbert
- The Pirbright Institute, Ash Road, Woking, Surrey GU240NF, UK
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Asnet Mary J, Paramasivan R, Shenbagarathai R. Identification of sequence motifs involved in Dengue virus-host interactions. J Biomol Struct Dyn 2015; 34:676-87. [PMID: 25905427 DOI: 10.1080/07391102.2015.1042914] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Dengue fever is a rapidly spreading mosquito-borne virus infection, which remains a serious global public health problem. As there is no specific treatment or commercial vaccine available for effective control of the disease, the attempts on developing novel control strategies are underway. Viruses utilize the surface receptor proteins of host to enter into the cells. Though various proteins were said to be receptors of Dengue virus (DENV) using Virus Overlay Protein Binding Assay, the precise interaction between DENV and host is not explored. Understanding the structural features of domain III envelope glycoprotein would help in developing efficient antiviral inhibitors. Therefore, an attempt was made to identify the sequence motifs present in domain III envelope glycoprotein of Dengue virus. Computational analysis revealed that the NGR motif is present in the domain III envelope glycoprotein of DENV-1 and DENV-3. Similarly, DENV-1, DENV-2 and DENV-4 were found to contain Yxxphi motif which is a tyrosine-based sorting signal responsible for the interaction with a mu subunit of adaptor protein complex. High-throughput virtual screening resulted in five compounds as lead molecules based on glide score, which ranges from -4.664 to -6.52 kcal/Mol. This computational prediction provides an additional tool for understanding the virus-host interactions and helps to identify potential targets in the host. Further, experimental evidence is warranted to confirm the virus-host interactions and also inhibitory activity of reported lead compounds.
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Affiliation(s)
- J Asnet Mary
- a Department of Zoology , Fatima College , Madurai , Tamil Nadu 625018 , India.,b PG & Research Department of Zoology and Biotechnology , Lady Doak College , Madurai , Tamil Nadu 625002 , India
| | - R Paramasivan
- c Centre for Research in Medical Entomology , Madurai , India
| | - R Shenbagarathai
- b PG & Research Department of Zoology and Biotechnology , Lady Doak College , Madurai , Tamil Nadu 625002 , India
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Cruz-Oliveira C, Freire JM, Conceição TM, Higa LM, Castanho MARB, Da Poian AT. Receptors and routes of dengue virus entry into the host cells. FEMS Microbiol Rev 2014; 39:155-70. [PMID: 25725010 DOI: 10.1093/femsre/fuu004] [Citation(s) in RCA: 213] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Dengue is the most prevalent arthropod-borne viral disease, caused by dengue virus, a member of the Flaviviridae family. Its worldwide incidence is now a major health problem, with 2.5 billion people living in risk areas. In this review, we integrate the structural rearrangements of each viral protein and their functions in all the steps of virus entry into the host cells. We describe in detail the putative receptors and attachment factors in mammalian and mosquito cells, and the recognition of viral immunocomplexes via Fcγ receptor in immune cells. We also discuss that virus internalization might occur through distinct entry pathways, including clathrin-mediated or non-classical clathrin-independent endocytosis, depending on the host cell and virus serotype or strain. The implications of viral maturation in virus entry are also explored. Finally, we discuss the mechanisms of viral genome access to the cytoplasm. This includes the role of low pH-induced conformational changes in the envelope protein that mediate membrane fusion, and original insights raised by our recent work that supports the hypothesis that capsid protein would also be an active player in this process, acting on viral genome translocation into the cytoplasm.
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Affiliation(s)
- Christine Cruz-Oliveira
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil
| | - João Miguel Freire
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisbon, Portugal
| | - Thaís M Conceição
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil
| | - Luiza M Higa
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil
| | - Miguel A R B Castanho
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisbon, Portugal
| | - Andrea T Da Poian
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil
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Dengue virus type 2: protein binding and active replication in human central nervous system cells. ScientificWorldJournal 2013; 2013:904067. [PMID: 24302878 PMCID: PMC3835358 DOI: 10.1155/2013/904067] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Accepted: 09/16/2013] [Indexed: 02/07/2023] Open
Abstract
An increased number of dengue cases with neurological complications have been reported in recent years. The lack of reliable animal models for dengue has hindered studies on dengue virus (DENV) pathogenesis and cellular tropism in vivo. We further investigate the tropism of DENV for the human central nervous system (CNS), characterizing DENV interactions with cell surface proteins in human CNS cells by virus overlay protein binding assays (VOPBA) and coimmunoprecipitations. In VOPBA, three membrane proteins (60, 70, and 130 kDa) from the gray matter bound the entire virus particle, whereas only a 70 kDa protein bound in white matter. The coimmunoprecipitation assays revealed three proteins from gray matter consistently binding virus particles, one clearly distinguishable protein (~32 kDa) and two less apparent proteins (100 and 130 kDa). Monoclonal anti-NS3 targeted the virus protein in primary cell cultures of human CNS treated with DENV-2, which also stained positive for NeuH, a neuron-specific marker. Thus, our results indicate (1) that DENV-2 exhibited a direct tropism for human neurons and (2) that human neurons sustain an active DENV replication as was demonstrated by the presence of the NS3 viral antigen in primary cultures of these cells treated with DENV-2.
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12
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Che P, Tang H, Li Q. The interaction between claudin-1 and dengue viral prM/M protein for its entry. Virology 2013; 446:303-13. [PMID: 24074594 DOI: 10.1016/j.virol.2013.08.009] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 07/18/2013] [Accepted: 08/09/2013] [Indexed: 02/04/2023]
Abstract
Dengue disease is becoming a huge public health concern around the world as more than one-third of the world's population living in areas at risk of infection. In an effort to assess host factors interacting with dengue virus, we identified claudin-1, a major tight junction component, as an essential cell surface protein for dengue virus entry. When claudin-1 was knocked down in Huh 7.5 cells via shRNA, the amount of dengue virus entering host cells was reduced. Consequently, the progeny virus productions were decreased and dengue virus-induced CPE was prevented. Furthermore, restoring the expression of claudin-1 in the knockdown cells facilitated dengue virus entry. The interaction between claudin-1 and dengue viral prM protein was further demonstrated using the pull-down assay. Deletion of the extracellular loop 1 (ECL1) of claudin-1 abolished such interaction, so did point mutations C54A, C64A and I32M on ECL1. These results suggest that the interaction between viral protein prM and host protein claudin-1 was essential for dengue entry. Since host and viral factors involved in virus entry are promising therapeutic targets, determining the essential role of claudin-1 could lead to the discovery of entry inhibitors with attractive therapeutic potential against dengue disease.
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Affiliation(s)
- Pulin Che
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294, United States; University of Alabama at Birmingham, Department of Medicine, Division of Infectious Diseases, BBRB 562, 845 19th Street South, Birmingham, AL 35294, United States
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13
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Yang J, Zou L, Hu Z, Chen W, Zhang J, Zhu J, Fang X, Yuan W, Hu X, Hu F, Rao X. Identification and characterization of a 43 kDa actin protein involved in the DENV-2 binding and infection of ECV304 cells. Microbes Infect 2013; 15:310-8. [DOI: 10.1016/j.micinf.2013.01.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 12/24/2012] [Accepted: 01/17/2013] [Indexed: 11/15/2022]
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14
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Flipse J, Wilschut J, Smit JM. Molecular mechanisms involved in antibody-dependent enhancement of dengue virus infection in humans. Traffic 2012; 14:25-35. [PMID: 22998156 DOI: 10.1111/tra.12012] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 09/19/2012] [Accepted: 09/21/2012] [Indexed: 12/19/2022]
Abstract
Dengue is the most common arthropod-borne viral infection in humans with ∼50 million cases annually worldwide. In recent decades, a steady increase in the number of severe dengue cases has been seen. Severe dengue disease is most often observed in individuals that have pre-existing immunity against heterotypic dengue subtypes and in infants with low levels of maternal dengue antibodies. The generally accepted hypothesis explaining the immunopathogenesis of severe dengue is called antibody-dependent enhancement of dengue infection. Here, circulating antibodies bind to the newly infecting virus but do not neutralize infection. Rather, these antibodies increase the infected cell mass and virus production. Additionally, antiviral responses are diminished allowing massive virus particle production early in infection. The large infected cell mass and the high viral load are prelude for severe disease development. In this review, we discuss what is known about the trafficking of dengue virus in its human host cells, and the signalling pathways activated after virus detection, both in the absence and presence of antibodies against the virus. This review summarizes work that aims to better understand the complex immunopathogenesis of severe dengue disease.
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Affiliation(s)
- Jacky Flipse
- Department of Medical Microbiology, Molecular Virology Section, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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15
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Zhang W, Hua X, Shen Q, Yang S, Yin H, Cui L. Identification of genotype 4 Hepatitis E virus binding proteins on swine liver cells. Virol J 2011; 8:482. [PMID: 22029540 PMCID: PMC3219747 DOI: 10.1186/1743-422x-8-482] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2011] [Accepted: 10/27/2011] [Indexed: 11/10/2022] Open
Abstract
Hepatitis E virus (HEV) is a zoonotic pathogen of which several species of animal were reported as reservoirs. Swine stands out as the major reservoir for HEV infection in humans, as suggested by the close genetic relationship of swine and human virus and cross-species infection of HEV. Up to now, the mechanism of cross-species infection of HEV from swine to humans is still unclear. This study sought to identify receptor element for genotype 4 HEV on swine liver cells using the viral overlay protein binding assay (VOPBA) technique and Mass Spectrometry fingerprinting. A single virus binding band with natural molecular weight about 55 kDa was observed, and mass spectrometry revealed that this virus binding band contained 31 different proteins. Infection inhibition assay suggested that this 55 kDa protein could prevent HEV from infecting its susceptible A549 cell line, which was further confirmed by the HEV genome detecting in the inoculated cells. Further research should be performed to elucidate the accurate receptor of HEV on the swine liver cells.
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Affiliation(s)
- Wen Zhang
- School of Agriculture and Biology, Shanghai JiaoTong University, 800 Dongchuan Road, Shanghai 200240, China
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Abstract
Dengue virus is an arthropod-borne virus transmitted by Aedes mosquitoes. Dengue virus causes fever and hemorrhagic disorders in humans and non-human primates. Direct interaction of the virus introduced by a mosquito bite with host receptor molecule(s) is crucial for virus propagation and the pathological progression of dengue diseases. Therefore, elucidation of the molecular mechanisms underlying the interaction between dengue virus and its receptor(s) in both humans and mosquitoes is essential for an understanding of dengue pathology. In addition, understanding the molecular mechanism(s) of virus entry is crucial for the development of effective new therapies to treat dengue patients. Binding of dengue virus to its receptor molecules is mediated through a viral envelope glycoprotein, termed E protein. We present a summary and describe the structures, binding properties, and pathological relevance of dengue virus receptor molecules proposed to date. In mammalian cells, there are many candidate molecules that may act as receptors, such as sulfated glycosaminoglycans (GAGs), lectins that recognize carbohydrates, glycosphingolipid (GSL), proteins with chaperone activity, laminin-binding proteins, and other uncharacterized proteins. There are also several lines of evidence for receptor molecules such as GSLs, proteins with chaperone activity, laminin-binding proteins, and other uncharacterized proteins in mosquito cells and organs. This review focuses on several molecules involved in carbohydrate-dependent binding of the virus.
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Affiliation(s)
- Kazuya I P J Hidari
- Department of Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, and Global COE Program for Innovation in Human Health Sciences, 52-1 Yada, Suruga-ku, Shizuoka-shi, Shizuoka 422-8526, Japan
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Wichit S, Jittmittraphap A, Hidari KI, Thaisomboonsuk B, Petmitr S, Ubol S, Aoki C, Itonori S, Morita K, Suzuki T, Suzuki Y, Jampangern W. Dengue virus type 2 recognizes the carbohydrate moiety of neutral glycosphingolipids in mammalian and mosquito cells. Microbiol Immunol 2011; 55:135-40. [DOI: 10.1111/j.1348-0421.2010.00293.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mercado-Curiel RF, Black WC, Muñoz MDL. A dengue receptor as possible genetic marker of vector competence in Aedes aegypti. BMC Microbiol 2008; 8:118. [PMID: 18625079 PMCID: PMC2488350 DOI: 10.1186/1471-2180-8-118] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2008] [Accepted: 07/15/2008] [Indexed: 12/01/2022] Open
Abstract
Background Vector competence refers to the intrinsic permissiveness of an arthropod vector for infection, replication and transmission of a virus. Notwithstanding studies of Quantitative Trait Loci (QTL) that influence the ability of Aedes aegypti midgut (MG) to become infected with dengue virus (DENV), no study to date has been undertaken to identify genetic markers of vector competence. Furthermore, it is known that mosquito populations differ greatly in their susceptibility to flaviviruses. Differences in vector competence may, at least in part, be due to the presence of specific midgut epithelial receptors and their identification would be a significant step forward in understanding the interaction of the virus with the mosquito. The first interaction of DENV with the insect is through proteins in the apical membrane of the midgut epithelium resulting in binding and receptor-mediated endocytosis of the virus, and this determines cell permissiveness to infection. The susceptibility of mosquitoes to infection may therefore depend on their specific virus receptors. To study this interaction in Ae. aegypti strains that differ in their vector competence for DENV, we investigated the DS3 strain (susceptible to DENV), the IBO-11 strain (refractory to infection) and the membrane escape barrier strain, DMEB, which is infected exclusively in the midgut epithelial cells. Results (1) We determined the MG proteins that bind DENV by an overlay protein binding assay (VOPBA) in Ae. aegypti mosquitoes of the DS3, DMEB and IBO-11 strains. The main protein identified had an apparent molecular weight of 67 kDa, although the protein identified in the IBO-11 strain showed a lower mass (64 kDa). (2) The midgut proteins recognized by DENV were also determined by VOPBA after two-dimensional gel electrophoresis. (3) To determine whether the same proteins were identified in all three strains, we obtained polyclonal antibodies against R67 and R64 and tested them against the three strains by immunoblotting; both antibodies recognized the 67 and 64 kDa proteins, corroborating the VOPBA results. (4) Specific antibodies against both proteins were used for immunofluorescent location by confocal microscopy; the antibodies recognized the basal lamina all along the MG, and cell membranes and intercellular spaces from the middle to the end of the posterior midgut (pPMG) in the neighborhood of the hindgut. (5) Quantitative analysis showed more intense fluorescence in DS3 and DMEB than in IBO-11. (6) The viral envelope antigen was not homogeneously distributed during MG infection but correlated with MG density and the distribution of R67/R64. Conclusion In this paper we provide evidence that the 67 kDa protein (R67/R64), described previously as a DENV receptor, is related to vector competence in Ae. aegypti. Consequently, our results strongly suggest that this protein may be a marker of vector competence for DENV in Ae. aegypti mosquitoes.
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Affiliation(s)
- Ricardo F Mercado-Curiel
- Department of Genetics and Molecular Biology, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Ave. Instituto Politécnico Nacional 2508 Col San Pedro Zacatenco, C.P. 07360, México, DF, México.
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Upanan S, Kuadkitkan A, Smith DR. Identification of dengue virus binding proteins using affinity chromatography. J Virol Methods 2008; 151:325-328. [PMID: 18562018 DOI: 10.1016/j.jviromet.2008.05.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2008] [Revised: 03/26/2008] [Accepted: 05/06/2008] [Indexed: 11/25/2022]
Abstract
Several studies have identified putative dengue virus receptors using virus overlay protein binding assays (VOPBA) with some apparent success. Given that this technique relies upon the use of electrophoresis of proteins through polyacrylamide gels with varying amounts of protein denaturation, the physiological relevance of the proteins isolated is open to question. To address this issue a Sepharose 4B-dengue virus serotype 2-affinity column was constructed to selectively bind dengue virus binding proteins from HepG2 (liver) cell membrane preparations. Results show that GRP78, but not the 37/67 kDa high affinity laminin receptor, was specifically bound by the column. This result is consistent with earlier work and shows that while affinity chromatography may provide a useful adjunct to VOPBA based studies particularly in cases where proteins maybe sensitive to denaturation, proteins isolated by VOPBA can be physiologically relevant.
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Affiliation(s)
- Supranee Upanan
- Molecular Pathology Laboratory, Institute of Molecular Biology and Genetics, Mahidol University, Salaya Campus, 25/25 Phuttamonthol Sai 4, Salaya, Nakorn Pathom 73170, Thailand
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Acosta EG, Castilla V, Damonte EB. Functional entry of dengue virus into Aedes albopictus mosquito cells is dependent on clathrin-mediated endocytosis. J Gen Virol 2008; 89:474-484. [PMID: 18198378 DOI: 10.1099/vir.0.83357-0] [Citation(s) in RCA: 147] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Entry of dengue virus 2 (DENV-2) into Aedes albopictus mosquito C6/36 cells was analysed using biochemical and molecular inhibitors, together with confocal and electron microscopy observations. Treatment with monodansylcadaverine, chlorpromazine, sucrose and ammonium chloride inhibited DENV-2 virus yield and protein expression, whereas nystatin, a blocker of caveolae-mediated endocytosis, did not have any effect. Using confocal microscopy, co-localization of DENV-2 E glycoprotein and the marker protein transferrin was observed at the periphery of the cytoplasm. To support the requirement of clathrin function for DENV-2 entry, overexpression of a dominant-negative mutant of Eps15 in C6/36 cells was shown to impair virus entry. The disruption of actin microfilaments by cytochalasin D also significantly affected DENV-2 replication. In contrast, microtubule disruption by colchicine treatment did not impair DENV-2 infectivity, suggesting that DENV-2 does not require transport from early to late endosomes for successful infection of mosquito cells. Furthermore, using transmission electron microscopy, DENV-2 particles of approximately 44-52 nm were found attached within electron-dense invaginations of the plasma membrane and in coated vesicles that resembled those of clathrin-coated pits and vesicles, respectively. Together, these results demonstrate for the first time that DENV-2 enters insect cells by receptor-mediated, clathrin-dependent endocytosis, requiring traffic through an acidic pH compartment for subsequent uncoating and completion of a productive infection.
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Affiliation(s)
- Eliana G Acosta
- Laboratorio de Virología, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
| | - Viviana Castilla
- Laboratorio de Virología, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
| | - Elsa B Damonte
- Laboratorio de Virología, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
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Gasperino J, Yunen J, Guh A, Tanaka KE, Kvetan V, Doyle H. Fulminant liver failure secondary to haemorrhagic dengue in an international traveller. Liver Int 2007; 27:1148-51. [PMID: 17845545 DOI: 10.1111/j.1478-3231.2007.01543.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Dengue infections are caused by a single-stranded RNA virus, which has four serotypes (DEN 1-4); mosquitoes of the genus Aedes serve as vectors of transmission. Risk factors for dengue infection are related to both the host and virus. Age, gender, immune status, and genetic background of the host all contribute to the severity of dengue infection. Recently, international travel to endemic areas has also been identified as a major risk factor for both primary and secondary dengue infection. Dengue remains a diagnostic challenge, given its protean nature, ranging from mild febrile illness to profound shock. The most severe manifestation of dengue infection is dengue shock syndrome, which has an estimated mortality rate close to 50%. Dengue shock syndrome typically presents with increased anion gap metabolic acidosis, disseminated intravascular coagulation, severe hypotension, and jaundice. Liver involvement appears to occur more frequently when infections involve DEN-3 and DEN-4 serotypes. While hepatocellular damage has been reported previously in dengue infection, acute liver failure is an extremely rare occurrence in adults. We report a patient with dengue shock syndrome who presented with acute liver failure and hepatic encephalopathy after recent travel to an endemic area.
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Affiliation(s)
- James Gasperino
- Division of Critical Care Medicine, Albert Einstein College of Medicine, Bronx, NY, USA.
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Cabrera-Hernandez A, Thepparit C, Suksanpaisan L, Smith DR. Dengue virus entry into liver (HepG2) cells is independent of hsp90 and hsp70. J Med Virol 2007; 79:386-92. [PMID: 17311328 DOI: 10.1002/jmv.20786] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Recently, several stress-related proteins including GRP78, hsp70, and hsp90 have been implicated as dengue virus receptors in various cell types, with hsp90/70 being implicated as a receptor complex in monocytes and macrophages, while GRP78 has been implicated as a liver cell expressed dengue virus receptor. To assess whether the hsp90/70 complex plays a role in the internalization of the dengue viruses into liver cells, we undertook infection inhibition studies with lipopolysaccharide and antibodies directed against both hsp70 and hsp90, individually and in combination. No inhibition of any dengue serotype was seen in the presence of lipopolysaccharide or antibodies directed against either hsp70 or hsp90 either singly or in combination. A moderate inhibition of dengue virus serotype 2 entry into liver cells was observed in the presence of antibodies directed against GRP78. These results confirm a proposed role for GRP78 as a dengue virus serotype 2 receptor protein and suggest that the recently identified hsp90/70 complex does not play a role in dengue virus internalization into liver cells.
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Affiliation(s)
- Arturo Cabrera-Hernandez
- Molecular Pathology Laboratory, Institute of Molecular Biology and Genetics, Mahidol University, Nakorn Pathom, Thailand
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Chin JFL, Chu JJH, Ng ML. The envelope glycoprotein domain III of dengue virus serotypes 1 and 2 inhibit virus entry. Microbes Infect 2006; 9:1-6. [PMID: 17196419 DOI: 10.1016/j.micinf.2006.09.009] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2006] [Revised: 09/25/2006] [Accepted: 09/30/2006] [Indexed: 11/23/2022]
Abstract
Dengue virus (DV) is a flavivirus and its urban transmission is maintained largely by its mosquito vectors and vertebrate host, often human. In this study, investigation was carried out on the involvement of domain III of the envelope (E) glycosylated protein of dengue virus serotypes 1 and 2 (DV-1 and DV-2 DIII) in binding to host cell surfaces, thus mediating virus entry. Domain III protein of flavivirus can also serve as an attractive target in inhibiting virus entry. The respective DV DIII proteins were expressed as soluble recombinant fusion proteins before purification through enzymatic cleavage and affinity purification. The purified recombinant DV-1 and DV-2 DIII proteins both demonstrated the ability to inhibit the entry of DV-1 and DV-2 into HepG2 cells and C6/36 mosquito cells. As such, the DV DIII protein is indeed important for the interaction with cellular receptors in both human and mosquito cells. In addition, this protein induced antibodies that completely neutralized homologous dengue serotypes although not with the same efficiency among the heterologous serotypes. This observation may be of importance when formulating a generic vaccine that is effective against all dengue virus serotypes.
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Affiliation(s)
- J F L Chin
- Flavivirology Laboratory, Department of Microbiology, 5 Science Drive 2, National University of Singapore, Singapore 117597, Singapore
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Mercado-Curiel RF, Esquinca-Avilés HA, Tovar R, Díaz-Badillo Á, Camacho-Nuez M, Muñoz MDL. The four serotypes of dengue recognize the same putative receptors in Aedes aegypti midgut and Ae. albopictus cells. BMC Microbiol 2006; 6:85. [PMID: 17014723 PMCID: PMC1599738 DOI: 10.1186/1471-2180-6-85] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2006] [Accepted: 10/02/2006] [Indexed: 11/10/2022] Open
Abstract
Background Dengue viruses (DENV) attach to the host cell surface and subsequently enter the cell by receptor-mediated endocytosis. Several primary and low affinity co-receptors for this flavivirus have been identified. However, the presence of these binding molecules on the cell surface does not necessarily render the cell susceptible to infection. Determination of which of them serve as bona fide receptors for this virus in the vector may be relevant to treating DENV infection and in designing control strategies. Results (1) Overlay protein binding assay showed two proteins with molecular masses of 80 and 67 kDa (R80 and R67). (2) Specific antibodies against these two proteins inhibited cell binding and infection. (3) Both proteins were bound by all four serotypes of dengue virus. (4) R80 and R67 were purified by affinity chromatography from Ae. aegypti mosquito midguts and from Ae albopictus C6/36 cells. (5) In addition, a protein with molecular mass of 57 kDa was purified by affinity chromatography from the midgut extracts. (6) R80 and R67 from radiolabeled surface membrane proteins of C6/36 cells were immunoprecipitated by antibodies against Ae. aegypti midgut. Conclusion Our results strongly suggest that R67 and R80 are receptors for the four serotypes of dengue virus in the midgut cells of Ae. aegypti and in C6/36 Ae. albopictus cells.
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Affiliation(s)
- Ricardo F Mercado-Curiel
- Department of Genetics and Molecular Biology, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Ave. Instituto Politécnico Nacional 2508 Col San Pedro Zacatenco, C.P. 07360, México, D. F., México
| | - Héctor Armando Esquinca-Avilés
- Department of Genetics and Molecular Biology, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Ave. Instituto Politécnico Nacional 2508 Col San Pedro Zacatenco, C.P. 07360, México, D. F., México
- Laboratory of Molecular Genetics. Universidad Autónoma de Chiapas, Chiapas, México
| | - Rosalinda Tovar
- Department of Genetics and Molecular Biology, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Ave. Instituto Politécnico Nacional 2508 Col San Pedro Zacatenco, C.P. 07360, México, D. F., México
| | - Álvaro Díaz-Badillo
- Department of Genetics and Molecular Biology, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Ave. Instituto Politécnico Nacional 2508 Col San Pedro Zacatenco, C.P. 07360, México, D. F., México
- Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada del Instituto Politécnico Nacional, Postgrado en Tecnología Avanzada, Legaria 694, Col. Irrigación, Delg. Miguel Hidalgo C.P. 11500 México D. F., México
| | - Minerva Camacho-Nuez
- Genomic Sciences Program, Universidad Autónoma de la Ciudad de México, Fray Servando Teresa de Mier, # 99, Col. Centro, CP. 06080, México D. F., México
| | - María de Lourdes Muñoz
- Department of Genetics and Molecular Biology, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Ave. Instituto Politécnico Nacional 2508 Col San Pedro Zacatenco, C.P. 07360, México, D. F., México
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Tio PH, Jong WW, Cardosa MJ. Two dimensional VOPBA reveals laminin receptor (LAMR1) interaction with dengue virus serotypes 1, 2 and 3. Virol J 2005; 2:25. [PMID: 15790424 PMCID: PMC1079963 DOI: 10.1186/1743-422x-2-25] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2005] [Accepted: 03/25/2005] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND The search for the dengue virus receptor has generated many candidates often identified only by molecular mass. The wide host range of the viruses in vitro combined with multiple approaches to identifying the receptor(s) has led to the notion that many receptors or attachment proteins may be involved and that the different dengue virus serotypes may utilize different receptors on the same cells as well as on different cell types. RESULTS In this study we used sequential extraction of PS Clone D cell monolayers with the detergent beta-octylglucopyranoside followed by sodium deoxycholate to prepare a cell membrane-rich fraction. We then used 2 dimensional (2D) gel electrophoresis to separate the membrane proteins and applied a modified virus overlay protein binding assay (VOPBA) to show that dengue virus serotypes 1, 2 and 3 all interact with the 37 kDa/67 kDa laminin receptor (LAMR1), a common non-integrin surface protein on many cell types. CONCLUSION At least 3 of the 4 dengue serotypes interact with the 37 kDa/67 kDa laminin receptor, LAMR1, which may be a common player in dengue virus-cell surface interaction.
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Affiliation(s)
- Phaik Hooi Tio
- Institute of Health and Community Medicine, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia
| | - Wan Wui Jong
- Institute of Health and Community Medicine, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia
| | - Mary Jane Cardosa
- Institute of Health and Community Medicine, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia
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