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Redwan EM, AlJaddawi AA, Uversky VN. Structural disorder in the proteome and interactome of Alkhurma virus (ALKV). Cell Mol Life Sci 2019; 76:577-608. [PMID: 30443749 PMCID: PMC7079808 DOI: 10.1007/s00018-018-2968-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 10/30/2018] [Accepted: 11/05/2018] [Indexed: 12/13/2022]
Abstract
Infection by the Alkhurma virus (ALKV) leading to the Alkhurma hemorrhagic fever is a common thread in Saudi Arabia, with no efficient treatment or prevention available as of yet. Although the rational drug design traditionally uses information on known 3D structures of viral proteins, intrinsically disordered proteins (i.e., functional proteins that do not possess unique 3D structures), with their multitude of disorder-dependent functions, are crucial for the biology of viruses. Here, viruses utilize disordered regions in their invasion of the host organisms and in hijacking and repurposing of different host systems. Furthermore, the ability of viruses to efficiently adjust and accommodate to their hostile habitats is also intrinsic disorder-dependent. However, little is currently known on the level of penetrance and functional utilization of intrinsic disorder in the ALKV proteome. To fill this gap, we used here multiple computational tools to evaluate the abundance of intrinsic disorder in the ALKV genome polyprotein. We also analyzed the peculiarities of intrinsic disorder predisposition of the individual viral proteins, as well as human proteins known to be engaged in interaction with the ALKV proteins. Special attention was paid to finding a correlation between protein functionality and structural disorder. To the best of our knowledge, this work represents the first systematic study of the intrinsic disorder status of ALKV proteome and interactome.
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Affiliation(s)
- Elrashdy M Redwan
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah, Saudi Arabia.
| | - Abdullah A AlJaddawi
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah, Saudi Arabia
| | - Vladimir N Uversky
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah, Saudi Arabia.
- Department of Molecular Medicine and USF Health Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, USA.
- Laboratory of New Methods in Biology, Institute for Biological Instrumentation, Russian Academy of Sciences, Pushchino, 142290, Moscow Region, Russia.
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Lam CW, AbuBakar S, Chang LY. Identification of the cell binding domain in Nipah virus G glycoprotein using a phage display system. J Virol Methods 2017; 243:1-9. [PMID: 28082163 DOI: 10.1016/j.jviromet.2017.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 01/06/2017] [Accepted: 01/06/2017] [Indexed: 10/25/2022]
Abstract
Nipah virus (NiV) is a highly pathogenic zoonotic paramyxovirus with unusual broad host tropism and is designated as a Category C pathogen by the U.S. National Institute of Allergy and Infectious Diseases. NiV infection is initiated after binding of the viral G glycoprotein to the host cell receptor. The aim of this study was to map the NiV G glycoprotein cell binding domain using a phage display system. The NiV G extracellular domain was truncated and displayed as attachment proteins on M13 phage g3p minor coat protein. The binding efficiency of recombinant phages displaying different regions of NiV G to mammalian cells was evaluated. Results showed that regions of NiV G consisting of amino acids 396-602 (recombinant phage G4) and 498-602 (recombinant phage G5) demonstrated the highest binding to both Vero (5.5×103 cfu/ml and 5.6×103 cfu/ml) and THP-1 cells (3.5×103 cfu/ml and 2.9×103 cfu/ml). However, the binding of both of these recombinant phages to THP-1 cells was significantly lower than to Vero cells, and this could be due to the lack of primary host cell receptor expression on THP-1 cells. Furthermore, the binding between these two recombinant phages was competitive suggesting that there was a common host cell attachment site. This study employed an approach that is suitable for use in a biosafety level 2 containment laboratory without the need to use live virus to show that NiV G amino acids 498-602 play an important role for attachment to host cells.
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Affiliation(s)
- Chui-Wan Lam
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Sazaly AbuBakar
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia; Tropical Infectious Diseases Research and Education Centre (TIDREC), University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Li-Yen Chang
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia; Tropical Infectious Diseases Research and Education Centre (TIDREC), University of Malaya, 50603 Kuala Lumpur, Malaysia.
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Poirier MJ, Moss DM, Feeser KR, Streit TG, Chang GJJ, Whitney M, Russell BJ, Johnson BW, Basile AJ, Goodman CH, Barry AK, Lammie PJ. Measuring Haitian children's exposure to chikungunya, dengue and malaria. Bull World Health Organ 2016; 94:817-825A. [PMID: 27821884 PMCID: PMC5096354 DOI: 10.2471/blt.16.173252] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 06/29/2016] [Accepted: 07/01/2016] [Indexed: 11/27/2022] Open
Abstract
Objective To differentiate exposure to the newly introduced chikungunya virus from exposure to endemic dengue virus and other pathogens in Haiti. Methods We used a multiplex bead assay to detect immunoglobulin G (IgG) responses to a recombinant chikungunya virus antigen, two dengue virus-like particles and three recombinant Plasmodium falciparum antigens. Most (217) of the blood samples investigated were collected longitudinally, from each of 61 children, between 2011 and 2014 but another 127 were collected from a cross-sectional sample of children in 2014. Findings Of the samples from the longitudinal cohort, none of the 153 collected between 2011 and 2013 but 78.7% (48/61) of those collected in 2014 were positive for IgG responses to the chikungunya virus antigen. In the cross-sectional sample, such responses were detected in 96 (75.6%) of the children and occurred at similar prevalence across all age groups. In the same sample, responses to malarial antigen were only detected in eight children (6.3%) but the prevalence of IgG responses to dengue virus antigens was 60.6% (77/127) overall and increased steadily with age. Spatial analysis indicated that the prevalence of IgG responses to the chikungunya virus and one of the dengue virus-like particles decreased as the sampling site moved away from the city of Léogâne and towards the ocean. Conclusion Serological evidence indicates that there had been a rapid and intense dissemination of chikungunya virus in Haiti. The multiplex bead assay appears to be an appropriate serological platform to monitor the seroprevalence of multiple pathogens simultaneously.
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Affiliation(s)
- Mathieu Jp Poirier
- University of Notre Dame Haiti Program, Hôpital Sainte Croix, Rue D' Accenil No.1, Léogâne, Haiti
| | - Delynn M Moss
- Centers for Disease Control and Prevention, Atlanta, United States of America (USA)
| | - Karla R Feeser
- Centers for Disease Control and Prevention, Atlanta, United States of America (USA)
| | - Thomas G Streit
- University of Notre Dame Haiti Program, Hôpital Sainte Croix, Rue D' Accenil No.1, Léogâne, Haiti
| | | | - Matthew Whitney
- Centers for Disease Control and Prevention, Fort Collins, USA
| | | | | | - Alison J Basile
- Centers for Disease Control and Prevention, Fort Collins, USA
| | | | - Amanda K Barry
- Centers for Disease Control and Prevention, Atlanta, United States of America (USA)
| | - Patrick J Lammie
- Centers for Disease Control and Prevention, Atlanta, United States of America (USA)
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Saokaew N, Poungpair O, Panya A, Tarasuk M, Sawasdee N, Limjindaporn T, Chaicumpa W, Yenchitsomanus P. Human monoclonal single-chain antibodies specific to dengue virus envelope protein. Lett Appl Microbiol 2013; 58:270-7. [DOI: 10.1111/lam.12186] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 10/20/2013] [Accepted: 10/23/2013] [Indexed: 11/29/2022]
Affiliation(s)
- N. Saokaew
- Division of Molecular Medicine; Department of Research and Development; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
- Graduate Program in Immunology; Department of Immunology; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
| | - O. Poungpair
- Division of Molecular Medicine; Department of Research and Development; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
| | - A. Panya
- Division of Molecular Medicine; Department of Research and Development; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
- Graduate Program in Biochemistry; Department of Biochemistry; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
| | - M. Tarasuk
- Division of Molecular Medicine; Department of Research and Development; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
| | - N. Sawasdee
- Division of Molecular Medicine; Department of Research and Development; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
| | - T. Limjindaporn
- Department of Anatomy; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
| | - W. Chaicumpa
- Laboratory for Research and Technology Development; Department of Parasitology; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
| | - P. Yenchitsomanus
- Division of Molecular Medicine; Department of Research and Development; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
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Proteomic identification of dengue virus binding proteins in Aedes aegypti mosquitoes and Aedes albopictus cells. BIOMED RESEARCH INTERNATIONAL 2013; 2013:875958. [PMID: 24324976 PMCID: PMC3842078 DOI: 10.1155/2013/875958] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 09/19/2013] [Accepted: 09/25/2013] [Indexed: 12/22/2022]
Abstract
The main vector of dengue in America is the mosquito Aedes aegypti, which is infected by dengue virus (DENV) through receptors of midgut epithelial cells. The envelope protein (E) of dengue virus binds to receptors present on the host cells through its domain III that has been primarily recognized to bind cell receptors. In order to identify potential receptors, proteins from mosquito midgut tissue and C6/36 cells were purified by affinity using columns with the recombinant E protein domain III (rE-DIII) or DENV particles bound covalently to Sepharose 4B to compare and evaluate their performance to bind proteins including putative receptors from female mosquitoes of Ae. aegypti. To determine their identity mass spectrometric analysis of purified proteins separated by polyacrylamide gel electrophoresis was performed. Our results indicate that both viral particles and rE-DIII bound proteins with the same apparent molecular weights of 57 and 67 kDa. In addition, viral particles bound high molecular weight proteins. Purified proteins identified were enolase, beta-adrenergic receptor kinase (beta-ARK), translation elongation factor EF-1 alpha/Tu, and cadherin.
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Ichiyama K, Gopala Reddy SB, Zhang LF, Chin WX, Muschin T, Heinig L, Suzuki Y, Nanjundappa H, Yoshinaka Y, Ryo A, Nomura N, Ooi EE, Vasudevan SG, Yoshida T, Yamamoto N. Sulfated polysaccharide, curdlan sulfate, efficiently prevents entry/fusion and restricts antibody-dependent enhancement of dengue virus infection in vitro: a possible candidate for clinical application. PLoS Negl Trop Dis 2013; 7:e2188. [PMID: 23658845 PMCID: PMC3636050 DOI: 10.1371/journal.pntd.0002188] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 03/20/2013] [Indexed: 11/18/2022] Open
Abstract
Curdlan sulfate (CRDS), a sulfated 1→3-β-D glucan, previously shown to be a potent HIV entry inhibitor, is characterized in this study as a potent inhibitor of the Dengue virus (DENV). CRDS was identified by in silico blind docking studies to exhibit binding potential to the envelope (E) protein of the DENV. CRDS was shown to inhibit the DENV replication very efficiently in different cells in vitro. Minimal effective concentration of CRDS was as low as 0.1 µg/mL in LLC-MK2 cells, and toxicity was observed only at concentrations over 10 mg/mL. CRDS can also inhibit DENV-1, 3, and 4 efficiently. CRDS did not inhibit the replication of DENV subgenomic replicon. Time of addition experiments demonstrated that the compound not only inhibited viral infection at the host cell binding step, but also at an early post-attachment step of entry (membrane fusion). The direct binding of CRDS to DENV was suggested by an evident reduction in the viral titers after interaction of the virus with CRDS following an ultrafiltration device separation, as well as after virus adsorption to an alkyl CRDS-coated membrane filter. The electron microscopic features also showed that CRDS interacted directly with the viral envelope, and caused changes to the viral surface. CRDS also potently inhibited DENV infection in DC-SIGN expressing cells as well as the antibody-dependent enhancement of DENV-2 infection. Based on these data, a probable binding model of CRDS to DENV E protein was constructed by a flexible receptor and ligand docking study. The binding site of CRDS was predicted to be at the interface between domains II and III of E protein dimer, which is unique to this compound, and is apparently different from the β-OG binding site. Since CRDS has already been tested in humans without serious side effects, its clinical application can be considered. There is no specific approved antiviral and vaccine for treatment or prevention of dengue, an acute mosquito-transmitted viral disease that affects more than 50 million people each year. Dengue virus (DENV) entry is a critical step that establishes the infection and enables virus replication. Curdlan sulfate (CRDS) is known to inhibit the entry and propagation of HIV-1 in the laboratory. Here we applied a computational binding site identification strategy, which suggested that CRDS could be a probable entry inhibitor of the viral surface E protein. CRDS potently blocked DENV infection at an early stage of the virus lifecycle in vitro. In addition, CRDS prevented antibody dependent enhancement, which is considered to be one of the most important clinical observations in DENV-infected patients. CRDS shows a favorable selectivity index against all serotypes of DENV. Further computational docking indicates that the compound binds to a pocket on the DENV E protein. Since CRDS has already been tested in humans without serious side effects, it can be a good candidate for clinical application.
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Affiliation(s)
- Koji Ichiyama
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Human Sciences, Musashino University, Tokyo, Japan
| | - Sindhoora Bhargavi Gopala Reddy
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Biotechnology, Sri Jayachamarajendra College of Engineering, Mysore, Karnataka, India
| | - Li Feng Zhang
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Wei Xin Chin
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Tegshi Muschin
- Department of Bio and Environmental Chemistry, Kitami Institute of Technology, Kitami, Japan
| | - Lars Heinig
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Youichi Suzuki
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Haraprasad Nanjundappa
- Department of Biotechnology, Sri Jayachamarajendra College of Engineering, Mysore, Karnataka, India
| | - Yoshiyuki Yoshinaka
- Department of Molecular Virology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Akihide Ryo
- Department of Microbiology, Yokohama City University School of Medicine, Yokohama, Japan
| | - Nobuo Nomura
- Department of Human Sciences, Musashino University, Tokyo, Japan
| | - Eng Eong Ooi
- Program in Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - Subhash G. Vasudevan
- Program in Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - Takashi Yoshida
- Department of Bio and Environmental Chemistry, Kitami Institute of Technology, Kitami, Japan
| | - Naoki Yamamoto
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- * E-mail:
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Flavone enhances dengue virus type-2 (NGC strain) infectivity and replication in vero cells. Molecules 2012; 17:2437-45. [PMID: 22374315 PMCID: PMC6268591 DOI: 10.3390/molecules17032437] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Revised: 01/29/2012] [Accepted: 01/31/2012] [Indexed: 11/17/2022] Open
Abstract
This study investigates the effects of 2-phenyl-1-benzopyran-4-one (flavone) on DENV-2 infectivity in Vero cells. Virus adsorption and attachment and intracellular virus replication were investigated using a foci forming unit assay (FFUA) and quantitative RT-PCR, respectively. Addition of flavone (100 μg/mL) significantly increased the number of DENV-2 foci by 35.66% ± 1.52 and 49.66% ± 2.51 when added during and after virus adsorption to the Vero cells, respectively. The average foci size after 4 days of infection increased by 33% ± 2.11 and 89% ± 2.13. The DENV-2 specific RNA copy number in the flavone-treated infected cells increased by 6.41- and 23.1-fold when compared to the mock-treated infected cells. Flavone (100 μg/mL) did not promote or inhibit Vero cell proliferation. The CC50 value of flavone against Vero cells was 446 µg/mL. These results suggest that flavone might enhance dengue virus replication by acting antagonistically towards flavonoids known to inhibit dengue virus replication.
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Watterson D, Kobe B, Young PR. Residues in domain III of the dengue virus envelope glycoprotein involved in cell-surface glycosaminoglycan binding. J Gen Virol 2011; 93:72-82. [PMID: 21957126 DOI: 10.1099/vir.0.037317-0] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The dengue virus (DENV) envelope (E) protein mediates virus entry into cells via interaction with a range of cell-surface receptor molecules. Cell-surface glycosaminoglycans (GAGs) have been shown to play an early role in this interaction, and charged oligosaccharides such as heparin bind to the E protein. We have examined this interaction using site-directed mutagenesis of a recombinant form of the putative receptor-binding domain III of the DENV-2E protein expressed as an MBP (maltose-binding protein)-fusion protein. Using an ELISA-based GAG-binding assay, cell-based binding analysis and antiviral-activity assays, we have identified two critical residues, K291 and K295, that are involved in GAG interactions. These studies have also demonstrated differential binding between mosquito and human cells.
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Affiliation(s)
- Daniel Watterson
- Australian Infectious Diseases Research Centre, School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Bostjan Kobe
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia.,Australian Infectious Diseases Research Centre, School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Paul R Young
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia.,Australian Infectious Diseases Research Centre, School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Queensland 4072, Australia
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Li S, Peng L, Zhao W, Zhong H, Zhang F, Yan Z, Cao H. Synthetic peptides containing B- and T-cell epitope of dengue virus-2 E domain III provoked B- and T-cell responses. Vaccine 2011; 29:3695-702. [DOI: 10.1016/j.vaccine.2011.03.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Revised: 02/24/2011] [Accepted: 03/02/2011] [Indexed: 12/30/2022]
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Domain-III FG loop of the dengue virus type 2 envelope protein is important for infection of mammalian cells and Aedes aegypti mosquitoes. Virology 2010; 406:328-35. [DOI: 10.1016/j.virol.2010.07.024] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2010] [Revised: 06/22/2010] [Accepted: 07/18/2010] [Indexed: 11/24/2022]
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