101
|
Zhang F, Luo J, Teng M, Xing G, Guo J, Zhang Y. Purification of cell-derived Japanese encephalitis virus by dual-mode chromatography. Biotechnol Appl Biochem 2020; 68:547-553. [PMID: 32458417 DOI: 10.1002/bab.1960] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 05/16/2020] [Indexed: 11/09/2022]
Abstract
Purification of the enveloped virus poses a challenge as one must retain viral infectivity to preserve immunogenicity. The traditional process of virus purification is time-consuming, laborious and hard to scale up. Here, a rapid, simple and extensible laboratory program for the purification of Japanese encephalitis virus (JEV) was developed by using differential centrifugation, ultrafiltration, Sepharose 4 fast flow gel chromatography, and CaptoTM Core 700 chromatography. The entire process recovered 61.64% of the original virus, and the purified virus particles maintained good activity and immunogenicity. The purification process described has potential application in large-scale production of high-purity JEV.
Collapse
Affiliation(s)
- Fuliang Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, People's Republic of China.,College of Biology and Food Engineering, Anyang Institute of Technology, Anyang, People's Republic of China
| | - Jun Luo
- Henan Provincial Key Laboratory of Animal Immunology, Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agriculture Sciences, Zhengzhou, People's Republic of China
| | - Man Teng
- Henan Provincial Key Laboratory of Animal Immunology, Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agriculture Sciences, Zhengzhou, People's Republic of China
| | - Guangxu Xing
- Henan Provincial Key Laboratory of Animal Immunology, Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agriculture Sciences, Zhengzhou, People's Republic of China
| | - Junqing Guo
- Henan Provincial Key Laboratory of Animal Immunology, Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agriculture Sciences, Zhengzhou, People's Republic of China
| | - Yihua Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, People's Republic of China
| |
Collapse
|
102
|
Xisto MF, Prates JWO, Dias IM, Dias RS, da Silva CC, de Paula SO. NS1 Recombinant Proteins Are Efficiently Produced in Pichia pastoris and Have Great Potential for Use in Diagnostic Kits for Dengue Virus Infections. Diagnostics (Basel) 2020; 10:E379. [PMID: 32517281 PMCID: PMC7345099 DOI: 10.3390/diagnostics10060379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/26/2020] [Accepted: 06/04/2020] [Indexed: 12/24/2022] Open
Abstract
Dengue is one of the major diseases causing global public health concerns. Despite technological advances in vaccine production against all its serotypes, it is estimated that the dengue virus is responsible for approximately 390 million infections per year. Laboratory diagnosis has been the key point for the correct treatment and prevention of this disease. Currently, the limiting factor in the manufacture of dengue diagnostic kits is the large-scale production of the non-structural 1 (NS1) antigen used in the capture of the antibody present in the infected patients' serum. In this work, we demonstrate the production of the non-structural 1 protein of dengue virus (DENV) serotypes 1-4 (NS1-DENV1, NS1-DENV2, NS1-DENV3, and NS1-DENV4) in the methylotrophic yeast Pichia pastoris KM71H. Secreted recombinant protein was purified by affinity chromatography and characterized by SDS-PAGE and ELISA. The objectives of this study were achieved, and the results showed that P. pastoris is a good heterologous host and worked well in the production of NS1DENV 1-4 recombinant proteins. Easy to grow and quick to obtain, this yeast secreted ready-to-use proteins, with a final yield estimated at 2.8-4.6 milligrams per liter of culture. We reached 85-91% sensitivity and 91-93% specificity using IgM as a target, and for anti-dengue IgG, 83-87% sensitivity and 81-93% specificity were achieved. In this work, we conclude that the NS1 recombinant proteins are efficiently produced in P. pastoris and have great potential for use in diagnostic kits for dengue virus infections. The transformed yeast obtained can be used for production in industrial-scale bioreactors.
Collapse
Affiliation(s)
- Mariana Fonseca Xisto
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais 36570-900, Brazil; (M.F.X.); (I.M.D.); (R.S.D.)
| | - John Willians Oliveira Prates
- Department of Microbiology, Federal University of Viçosa, Viçosa, Minas Gerais 36570-900, Brazil; (J.W.O.P.); (C.C.d.S.)
| | - Ingrid Marques Dias
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais 36570-900, Brazil; (M.F.X.); (I.M.D.); (R.S.D.)
| | - Roberto Sousa Dias
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais 36570-900, Brazil; (M.F.X.); (I.M.D.); (R.S.D.)
| | - Cynthia Canedo da Silva
- Department of Microbiology, Federal University of Viçosa, Viçosa, Minas Gerais 36570-900, Brazil; (J.W.O.P.); (C.C.d.S.)
| | - Sérgio Oliveira de Paula
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais 36570-900, Brazil; (M.F.X.); (I.M.D.); (R.S.D.)
| |
Collapse
|
103
|
Pan CY, Liu WL, Su MP, Chang TP, Ho HP, Shu PY, Huang JJ, Lin LJ, Chen CH. Epidemiological analysis of the Kaohsiung city strategy for dengue fever quarantine and epidemic prevention. BMC Infect Dis 2020; 20:347. [PMID: 32414340 PMCID: PMC7226716 DOI: 10.1186/s12879-020-4942-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 03/02/2020] [Indexed: 01/20/2023] Open
Abstract
Background Dengue is endemic in over 100 countries and is an important public health problem worldwide. Dengue fever is not endemic in Taiwan; the importation of dengue viruses from neighboring countries via close commercial links and air travel is considered to be the cause of local outbreaks. Therefore, efforts toward disease control have focused on preventing the importation of dengue into Taiwan. In this study, we investigated the relationships between the numbers of imported and indigenous dengue cases to test the validity of this strategy. Methods Data on cases of dengue fever that occurred between 2013 and 2018 were obtained from the surveillance systems of the Taiwan Center for Disease Control and Kaohsiung City Health Department. Standard epidemiological data, including the monthly numbers of indigenous and imported cases of dengue, were calculated. Potential associations between the numbers of indigenous and imported cases were investigated using correlation analyses. Results We identified a possible relationship between the period of disease concealment and the number of imported dengue cases, which resulted in epidemics of indigenous dengue fever within local communities. Further analysis of confirmed cases during previous epidemics in Kaohsiung City found that the risk of indigenous dengue fever may be related to the likelihood that patients with imported dengue fever will stay within local communities. Conclusion Given the correlations found between imported and indigenous cases of dengue fever, as well as the relationship between the disease concealment period and the risk of indigenous dengue fever, prevention of disease importation and efficient identification of dengue cases within high-risk communities remain the major priorities for disease control.
Collapse
Affiliation(s)
- Chao-Ying Pan
- Department of Health, Kaohsiung City Government, Kaohsiung City, Taiwan
| | - Wei-Liang Liu
- National Mosquito-Borne Diseases Control Research Center, National Health Research Institutes, Zhunan, Taiwan
| | - Matthew-P Su
- Department of Biological Science, Nagoya University, Nagoya, 464-8602, Japan
| | - Te-Pin Chang
- National Mosquito-Borne Diseases Control Research Center, National Health Research Institutes, Zhunan, Taiwan
| | - Hui-Pin Ho
- Department of Health, Kaohsiung City Government, Kaohsiung City, Taiwan
| | - Pei-Yun Shu
- Center for Diagnostics and Vaccine Development, Centers for Disease Control, Ministry of Health and Welfare, Taipei, Taiwan, Republic of China
| | - Joh-Jong Huang
- Bureau of Social Affairs, Tainan City Government, Tainan City, Taiwan
| | - Li-Jen Lin
- Department of Health, Kaohsiung City Government, Kaohsiung City, Taiwan.
| | - Chun-Hong Chen
- National Mosquito-Borne Diseases Control Research Center, National Health Research Institutes, Zhunan, Taiwan. .,National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Zhunan, Taiwan.
| |
Collapse
|
104
|
Glucose-Regulated Protein 78 Interacts with Zika Virus Envelope Protein and Contributes to a Productive Infection. Viruses 2020; 12:v12050524. [PMID: 32397571 PMCID: PMC7290722 DOI: 10.3390/v12050524] [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: 04/01/2020] [Revised: 05/01/2020] [Accepted: 05/05/2020] [Indexed: 12/23/2022] Open
Abstract
Zika virus (ZIKV; Flaviviridae) is a mosquito-borne flavivirus shown to cause fetal abnormalities collectively known as congenital Zika syndrome and Guillain-Barré syndrome in recent outbreaks. Currently, there is no specific treatment or vaccine available, and more effort is needed to identify cellular factors in the viral life cycle. Here, we investigated interactors of ZIKV envelope (E) protein by combining protein pull-down with mass spectrometry. We found that E interacts with the endoplasmic reticulum (ER) resident chaperone, glucose regulated protein 78 (GRP78). Although other flaviviruses are known to co-opt ER resident proteins, including GRP78, to enhance viral infectivity, the role ER proteins play during the ZIKV life cycle is yet to be elucidated. We showed that GRP78 levels increased during ZIKV infection and localised to sites coincident with ZIKV E staining. Depletion of GRP78 using specific siRNAs significantly reduced reporter-virus luciferase readings, viral protein synthesis, and viral titres. Additionally, GRP78 depletion reduced the ability of ZIKV to disrupt host cell translation and altered the localisation of viral replication factories, though there was no effect on viral RNA synthesis. In summary, we showed GRP78 is a vital host-factor during ZIKV infection, which may be involved in the coordination of viral replication factories.
Collapse
|
105
|
Gore MM. Vaccines Against Dengue and West Nile Viruses in India: The Need of the Hour. Viral Immunol 2020; 33:423-433. [PMID: 32320353 DOI: 10.1089/vim.2019.0122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The circulation of flaviviruses, dengue (DEN), Japanese encephalitis (JE) and West Nile (WN) viruses, and others, is generating a major concern in many countries. Both JE along with DEN have been endemic in large regions of India. WN virus infection, although circulating in southern regions for many years, in recent years, WN encephalitis patients have been demonstrated. While vaccines against JE have been developed and decrease outbreaks, in case of DEN and WN, vaccines are still in developing level, especially, it has been difficult to achieve the long-term protective immune response. The first licensed DEN vaccine, which is a live attenuated vaccine, was administered in countries where the virus is endemic, and has a potential to cause serious side effects, especially when administered to younger population as observed in the Philippines vaccination drive. In the case of WN, although the purified inactivated virion-based vaccine worked effectively as a veterinary vaccine for horses, no effective vaccine has yet been licensed for humans. The induction of CD4+ and CD8+ T cell responses is essential to complete protection by these viruses, as evidenced by responses to asymptomatic infections. Many studies have shown that neutralizing antibody (NAb) response is against surface structural proteins; CD4+ and CD8+ responses are mainly directed against nonstructural proteins rather than NAb response. New data suggest that encapsulating virus vaccines in nanoparticles (NPs) will direct antigen in cytoplasmic compartment by antigen-presenting cells, which will improve presentation to CD4+ and CD8+ T cells. Since tissue culture-derived, purified inactivated viruses are easier to manufacture and safer than developing live virus vaccines, inclusion of NP provides an attractive alternative for generating robust flaviviral vaccines that are affordable with long-lived protection.
Collapse
Affiliation(s)
- Milind M Gore
- Emeritus Scientist, ICMR-National Institute of Virology, Pune, India
| |
Collapse
|
106
|
Target Identification Using Homopharma and Network-Based Methods for Predicting Compounds Against Dengue Virus-Infected Cells. Molecules 2020; 25:molecules25081883. [PMID: 32325755 PMCID: PMC7221756 DOI: 10.3390/molecules25081883] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/10/2020] [Accepted: 04/14/2020] [Indexed: 12/28/2022] Open
Abstract
Drug target prediction is an important method for drug discovery and design, can disclose the potential inhibitory effect of active compounds, and is particularly relevant to many diseases that have the potential to kill, such as dengue, but lack any healing agent. An antiviral drug is urgently required for dengue treatment. Some potential antiviral agents are still in the process of drug discovery, but the development of more effective active molecules is in critical demand. Herein, we aimed to provide an efficient technique for target prediction using homopharma and network-based methods, which is reliable and expeditious to hunt for the possible human targets of three phenolic lipids (anarcardic acid, cardol, and cardanol) related to dengue viral (DENV) infection as a case study. Using several databases, the similarity search and network-based analyses were applied on the three phenolic lipids resulting in the identification of seven possible targets as follows. Based on protein annotation, three phenolic lipids may interrupt or disturb the human proteins, namely KAT5, GAPDH, ACTB, and HSP90AA1, whose biological functions have been previously reported to be involved with viruses in the family Flaviviridae. In addition, these phenolic lipids might inhibit the mechanism of the viral proteins: NS3, NS5, and E proteins. The DENV and human proteins obtained from this study could be potential targets for further molecular optimization on compounds with a phenolic lipid core structure in anti-dengue drug discovery. As such, this pipeline could be a valuable tool to identify possible targets of active compounds.
Collapse
|
107
|
Kholodilov IS, Litov AG, Klimentov AS, Belova OA, Polienko AE, Nikitin NA, Shchetinin AM, Ivannikova AY, Bell-Sakyi L, Yakovlev AS, Bugmyrin SV, Bespyatova LA, Gmyl LV, Luchinina SV, Gmyl AP, Gushchin VA, Karganova GG. Isolation and Characterisation of Alongshan Virus in Russia. Viruses 2020; 12:v12040362. [PMID: 32224888 PMCID: PMC7232203 DOI: 10.3390/v12040362] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 03/19/2020] [Accepted: 03/24/2020] [Indexed: 12/30/2022] Open
Abstract
In recent decades, many new flavi-like viruses have been discovered predominantly in different invertebrates and, as was recently shown, some of them may cause disease in humans. The Jingmenvirus (JMV) group holds a special place among flaviviruses and flavi-like viruses because they have a segmented ssRNA(+) genome. We detected Alongshan virus (ALSV), which is a representative of the JMV group, in ten pools of adult Ixodes persulcatus ticks collected in two geographically-separated Russian regions. Three of the ten strains were isolated in the tick cell line IRE/CTVM19. One of the strains persisted in the IRE/CTVM19 cells without cytopathic effect for three years. Most ALSV virions purified from tick cells were spherical with a diameter of approximately 40.5 nm. In addition, we found smaller particles of approximately 13.1 nm in diameter. We obtained full genome sequences of all four segments of two of the isolated ALSV strains, and partial sequences of one segment from the third strain. Phylogenetic analysis on genome segment 2 of the JMV group clustered our novel strains with other ALSV strains. We found evidence for the existence of a novel upstream open reading frame in the glycoprotein-coding segment of ALSV and other members of the JMV group.
Collapse
Affiliation(s)
- Ivan S. Kholodilov
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Alexander G. Litov
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Alexander S. Klimentov
- Laboratory of Biochemistry, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (A.S.K.); (L.V.G.)
- Laboratory of Biology and Indication of Arboviruses, Department Ivanovsky Institute of Virology, Gamaleya Federal Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia
| | - Oxana A. Belova
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Alexandra E. Polienko
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Nikolai A. Nikitin
- Faculty of Biology, Lomonosov MSU, 119991 Moscow, Russia; (N.A.N.); (V.A.G.)
| | - Alexey M. Shchetinin
- Pathogenic Microorganisms Variability Laboratory, Gamaleya Federal Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia;
| | - Anna Y. Ivannikova
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Lesley Bell-Sakyi
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool L3 5RF, UK;
| | - Alexander S. Yakovlev
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Sergey V. Bugmyrin
- Laboratory for Animal and Plant Parasitology, Institute of Biology of Karelian Research Centre, Russian Academy of Sciences (IB KarRC RAS), 185910 Petrozavodsk, Russia; (S.V.B.); (L.A.B.)
| | - Liubov A. Bespyatova
- Laboratory for Animal and Plant Parasitology, Institute of Biology of Karelian Research Centre, Russian Academy of Sciences (IB KarRC RAS), 185910 Petrozavodsk, Russia; (S.V.B.); (L.A.B.)
| | - Larissa V. Gmyl
- Laboratory of Biochemistry, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (A.S.K.); (L.V.G.)
| | - Svetlana V. Luchinina
- Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 454092 Chelyabinsk, Russia;
| | - Anatoly P. Gmyl
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Vladimir A. Gushchin
- Faculty of Biology, Lomonosov MSU, 119991 Moscow, Russia; (N.A.N.); (V.A.G.)
- Pathogenic Microorganisms Variability Laboratory, Gamaleya Federal Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia;
| | - Galina G. Karganova
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
- Department of Organization and Technology of Immunobiological Preparations, Institute for Translational Medicine and Biotechnology, Sechenov University, 119991 Moscow, Russia
- Correspondence: ; Tel.: +7-495-841-9327
| |
Collapse
|
108
|
Kazmi SS, Ali W, Bibi N, Nouroz F. A review on Zika virus outbreak, epidemiology, transmission and infection dynamics. ACTA ACUST UNITED AC 2020; 27:5. [PMID: 32158705 PMCID: PMC7057477 DOI: 10.1186/s40709-020-00115-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 02/24/2020] [Indexed: 02/07/2023]
Abstract
Zika virus (ZIKV) is a newly emergent relative of the Flaviviridae family and linked to dengue (DENV) and Chikungunya (CHIVKV). ZIKV is one of the rising pathogens promptly surpassing geographical borders. ZIKV infection was characterized by mild disease with fever, headache, rash, arthralgia and conjunctivitis, with exceptional reports of an association with Guillain–Barre syndrome (GBS) and microcephaly. However, since the end of 2015, an increase in the number of GBS associated cases and an astonishing number of microcephaly in fetus and new-borns in Brazil have been related to ZIKV infection, raising serious worldwide public health concerns. ZIKV is transmitted by the bite of infected female mosquitoes of Aedes species. Clarifying such worrisome relationships is, thus, a current unavoidable goal. Here, we extensively described the current understanding of the effects of ZIKV on heath, clinical manifestation, diagnosis and treatment options based on modern, alternative and complementary medicines regarding the disease.
Collapse
Affiliation(s)
- Syeda Sidra Kazmi
- 1Department of Bioinformatics, Hazara University Mansehra, Mansehra, Pakistan
| | - Waqar Ali
- 1Department of Bioinformatics, Hazara University Mansehra, Mansehra, Pakistan
| | - Nousheen Bibi
- 1Department of Bioinformatics, Hazara University Mansehra, Mansehra, Pakistan
| | - Faisal Nouroz
- 1Department of Bioinformatics, Hazara University Mansehra, Mansehra, Pakistan.,2Department of Botany, Hazara University Mansehra, Mansehra, Pakistan
| |
Collapse
|
109
|
A Simple Method for the Design and Development of Flavivirus NS1 Recombinant Proteins Using an In Silico Approach. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3865707. [PMID: 32104691 PMCID: PMC7040382 DOI: 10.1155/2020/3865707] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 09/25/2019] [Accepted: 10/08/2019] [Indexed: 11/23/2022]
Abstract
Even in countries that are currently not facing a flavivirus epidemic, the spread of mosquito-borne flaviviruses presents an increasing public threat, owing to climate change, international travel, and other factors. Many of these countries lack the resources (viral strains, clinical specimens, etc.) needed for the research that could help cope with the threat imposed by flaviviruses, and therefore, an alternative approach is needed. Using an in silico approach to global databases, we aimed to design and develop flavivirus NS1 recombinant proteins with due consideration towards antigenic variation. NS1 genes analyzed in this study included a total of 6,823 sequences, from Dengue virus (DENV), Japanese encephalitis virus (JEV), West Nile virus (WNV), Zika virus (ZIKV), and Yellow fever virus (YKV). We extracted and analyzed 316 DENV NS1 sequence types (STs), 59 JEV STs, 75 WNV STs, 30 YFV STs, and 43 ZIKV STs using a simple algorithm based on phylogenetic analysis. STs were reclassified according to the variation of the major epitope by MHC II binding. 78 DENV epitope type (EpT), 29 JEV EpTs, 29 WNV EpTs, 12 YFV EpTs, and 5 ZIKV EpTs were extracted according to their major epitopes. Also, frequency results showed that there were dominant EpTs in all flavivirus. Fifteen STs were selected and purified for the expression of recombinant antigen in Escherichia coli by sodium dodecyl sulfate extraction. Our study details a novel in silico approach for the development of flavivirus diagnostics, including a simple way to screen the important peptide regions.
Collapse
|
110
|
Shahid F, Ashfaq UA, Javaid A, Khalid H. Immunoinformatics guided rational design of a next generation multi epitope based peptide (MEBP) vaccine by exploring Zika virus proteome. INFECTION GENETICS AND EVOLUTION 2020; 80:104199. [PMID: 31962160 DOI: 10.1016/j.meegid.2020.104199] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 01/13/2020] [Accepted: 01/17/2020] [Indexed: 12/16/2022]
Abstract
Zika virus (ZIKV) is an RNA virus that has spread through mosquito sting. Currently, no vaccine and antiviral medication available so far against ZIKV. Therefore, it has fostered a study to design MEBP vaccine enabling effective prevention against the ZIKV infection. In this study combination of immuno-informatics and molecular docking approach was used to constitute a MEBP vaccine. The ZIKV proteome was used for prediction of B-cell, T-cell (HTL & CTL) and IFN-γ epitopes. After prediction, highly antigenic and overlapping epitopes have been shortlisted which includes 14 CTL and 11 HTL epitopes that have been linked to the final peptide through AAY and GPGPG linkers respectively. An adjuvant at the N-end of the vaccine was added to improve the immunogenicity of the vaccine through the EAAAK linker. The final construct constitutes 435 amino acids after the addition of linkers and adjuvant. The existence of B-cell and IFN-γ epitopes affirms the humoral and cell-mediated immune responses acquired by the construct. Allergenicity, antigenicity and different physiochemical attributes of the vaccine were evaluated to assure its safety and immunogenicity profile. In fact, the construct was antigenic and non-allergenic. Docking was performed among vaccine and TLR-3 to evaluate the binding affinity and the molecular interaction. Finally, the construct was subjected to In silico cloning to confers the authenticity of its expression efficiency. However, the proposed construct need to be validate experimentally to ensure its safety and immunogenic profile.
Collapse
Affiliation(s)
- Farah Shahid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Usman Ali Ashfaq
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan.
| | - Anam Javaid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Hina Khalid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| |
Collapse
|
111
|
Arias-Arias JL, MacPherson DJ, Hill ME, Hardy JA, Mora-Rodríguez R. A fluorescence-activatable reporter of flavivirus NS2B-NS3 protease activity enables live imaging of infection in single cells and viral plaques. J Biol Chem 2020; 295:2212-2226. [PMID: 31919100 DOI: 10.1074/jbc.ra119.011319] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 01/02/2020] [Indexed: 12/23/2022] Open
Abstract
The genus Flavivirus in the family Flaviviridae comprises many medically important viruses, such as dengue virus (DENV), Zika virus (ZIKV), and yellow fever virus. The quest for therapeutic targets to combat flavivirus infections requires a better understanding of the kinetics of virus-host interactions during infections with native viral strains. However, this is precluded by limitations of current cell-based systems for monitoring flavivirus infection in living cells. In the present study, we report the construction of fluorescence-activatable sensors to detect the activities of flavivirus NS2B-NS3 serine proteases in living cells. The system consists of GFP-based reporters that become fluorescent upon cleavage by recombinant DENV-2/ZIKV proteases in vitro A version of this sensor containing the flavivirus internal NS3 cleavage site linker reported the highest fluorescence activation in stably transduced mammalian cells upon DENV-2/ZIKV infection. Moreover, the onset of fluorescence correlated with viral protease activity. A far-red version of this flavivirus sensor had the best signal-to-noise ratio in a fluorescent Dulbecco's plaque assay, leading to the construction of a multireporter platform combining the flavivirus sensor with reporter dyes for detection of chromatin condensation and cell death, enabling studies of viral plaque formation with single-cell resolution. Finally, the application of this platform enabled the study of cell-population kinetics of infection and cell death by DENV-2, ZIKV, and yellow fever virus. We anticipate that future studies of viral infection kinetics with this reporter system will enable basic investigations of virus-host interactions and facilitate future applications in antiviral drug research to manage flavivirus infections.
Collapse
Affiliation(s)
- Jorge L Arias-Arias
- Centro de Investigación en Enfermedades Tropicales, Facultad de Microbiología, Universidad de Costa Rica, San José 11501-2060, Costa Rica
| | - Derek J MacPherson
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003
| | - Maureen E Hill
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003
| | - Jeanne A Hardy
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003
| | - Rodrigo Mora-Rodríguez
- Centro de Investigación en Enfermedades Tropicales, Facultad de Microbiología, Universidad de Costa Rica, San José 11501-2060, Costa Rica.
| |
Collapse
|
112
|
Lopez-Jimena B, Bakheit M, Bekaert M, Harold G, Frischmann S, Fall C, Diagne CT, Faye O, Faye O, Sall AA, Weidmann M. Development and Validation of Real-Time RT-LAMP Assays for the Specific Detection of Zika Virus. Methods Mol Biol 2020; 2142:147-164. [PMID: 32367366 DOI: 10.1007/978-1-0716-0581-3_13] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Two one-step real-time reverse transcription loop-mediated isothermal amplification (RT-LAMP) assays for the detection of Zika virus (ZIKV) were developed, based on two different primer design approaches: (1) open source, based on a combination of sequence diversity clustering (phylogeny and principal component analysis) and LAVA algorithm, using 45 whole genome ZIKV sequences retrieved from the National Center for Biotechnology Information (NCBI) database; (2) standard software for LAMP primer design (Primer Explorer V4), using 59 sequences of the ZIKV 3' UTR. The assays were firstly evaluated with External Quality Assessment panels from INSTAND e.V. (Germany) and EVD-LabNet (The Netherlands) including 4 and 12 unknown samples, respectively, and secondly, with 9 human, mosquito, and monkey ZIKV isolates from Africa (Senegal, Ivory Coast, and Uganda) and America (Brazil). The limit of detection as determined by probit analysis was 181 molecules for both RT-LAMP assays, and 100% reproducibility in the assays was obtained for 103 molecules (4/8 repetitions were positive for 102 molecules). Both assays were specific, amplifying only ZIKV RNA and not cross-detecting other arboviruses included in this study.
Collapse
Affiliation(s)
- Benjamin Lopez-Jimena
- Institute of Aquaculture, University of Stirling, Scotland, UK.
- Centre for Diagnostics Development, LifeArc, Scotland, UK.
| | | | - Michaël Bekaert
- Institute of Aquaculture, University of Stirling, Scotland, UK
| | - Graham Harold
- Institute of Aquaculture, University of Stirling, Scotland, UK
| | | | - Cheikh Fall
- Arbovirus and Viral Haemorrhagic Fever Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Cheikh Tidiane Diagne
- Arbovirus and Viral Haemorrhagic Fever Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Oumar Faye
- Arbovirus and Viral Haemorrhagic Fever Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Ousmane Faye
- Arbovirus and Viral Haemorrhagic Fever Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | - Amadou Alpha Sall
- Arbovirus and Viral Haemorrhagic Fever Unit, Institut Pasteur de Dakar, Dakar, Senegal
| | | |
Collapse
|
113
|
Kim YC, Dumoux M, Owens RJ, Reyes-Sandoval A. Optimization of Small-Scale Production of Zika Virus Envelope Glycoprotein by Transient Expression in HEK293 Cells for ELISA. Methods Mol Biol 2020; 2142:103-112. [PMID: 32367362 DOI: 10.1007/978-1-0716-0581-3_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Zika virus (ZIKV) is an emerging mosquito-borne flavivirus, which has recently caused global epidemics with its association with congenital Zika syndrome such as severe microcephaly. The recombinant ZIKV envelope (Env) glycoprotein is useful for immunological applications such as serodiagnosis of ZIKV infection and for monitoring immune responses in preclinical and clinical ZIKV vaccine developments. In this chapter, we describe the optimization of production of Zika virus envelope glycoprotein in Human Embryonic Kidney (HEK 293T) cells by small-scale expression followed by large-scale protein production. Small-scale expression of HEK 293T cells allows screening of a large number of vectors simultaneously to select the vectors with best secretory profiles for scale-up in Expi293 mammalian system to maximize the protein yield followed by purification for research and clinical applications.
Collapse
Affiliation(s)
- Young Chan Kim
- The Jenner Institute, The Henry Wellcome Building for Molecular Physiology, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | | | - Raymond J Owens
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Rutherford Appleton Laboratory, Research Complex at Harwell, Didcot, UK
| | - Arturo Reyes-Sandoval
- The Jenner Institute, The Henry Wellcome Building for Molecular Physiology, Nuffield Department of Medicine, University of Oxford, Oxford, UK.
| |
Collapse
|
114
|
Ávila-Pérez G, Nogales A, Park JG, Márquez-Jurado S, Iborra FJ, Almazan F, Martínez-Sobrido L. A natural polymorphism in Zika virus NS2A protein responsible of virulence in mice. Sci Rep 2019; 9:19968. [PMID: 31882898 PMCID: PMC6934710 DOI: 10.1038/s41598-019-56291-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 12/05/2019] [Indexed: 12/12/2022] Open
Abstract
Zika virus (ZIKV) infection is currently one of the major concerns in human public health due to its association with neurological disorders. Intensive effort has been implemented for the treatment of ZIKV, however there are not currently approved vaccines or antivirals available to combat ZIKV infection. In this sense, the identification of virulence factors associated with changes in ZIKV virulence could help to develop safe and effective countermeasures to treat ZIKV or to prevent future outbreaks. Here, we have compared the virulence of two related ZIKV strains from the recent outbreak in Brazil (2015), Rio Grande do Norte Natal (RGN) and Paraiba. In spite of both viruses being identified in the same period of time and region, significant differences in virulence and replication were observed using a validated mouse model of ZIKV infection. While ZIKV-RGN has a 50% mouse lethal dose (MLD50) of ~105 focus forming units (FFUs), ZIKV-Paraiba infection resulted in 100% of lethality with less than 10 FFUs. Combining deep-sequencing analysis and our previously described infectious ZIKV-RGN cDNA clone, we identified a natural polymorphism in the non-structural protein 2 A (NS2A) that increase the virulence of ZIKV. Moreover, results demonstrate that the single amino acid alanine to valine substitution at position 117 (A117V) in the NS2A was sufficient to convert the attenuated rZIKV-RGN in a virulent Paraiba-like virus (MLD50 < 10 FFU). The mechanism of action was also evaluated and data indicate that substitution A117V in ZIKV NS2A protein reduces host innate immune responses and viral-induced apoptosis in vitro. Therefore, amino acid substitution A117V in ZIKV NS2A could be used as a genetic risk-assessment marker for future ZIKV outbreaks.
Collapse
Affiliation(s)
- Gines Ávila-Pérez
- Department of Microbiology and Immunology, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, New York, 14642, USA
| | - Aitor Nogales
- Department of Microbiology and Immunology, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, New York, 14642, USA
- Center for Animal Health Research, INIA-CISA, 28130, Valdeolmos, Madrid, Spain
| | - Jun-Gyu Park
- Department of Microbiology and Immunology, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, New York, 14642, USA
| | - Silvia Márquez-Jurado
- Department of Molecular and Cell Biology, Centro Nacional de Biotecnología (CNB-CSIC), Universidad Autonóma de Madrid, 3 Darwin Street, 28049, Madrid, Spain
| | - Francisco J Iborra
- Department of Molecular and Cell Biology, Centro Nacional de Biotecnología (CNB-CSIC), Universidad Autonóma de Madrid, 3 Darwin Street, 28049, Madrid, Spain
| | - Fernando Almazan
- Department of Molecular and Cell Biology, Centro Nacional de Biotecnología (CNB-CSIC), Universidad Autonóma de Madrid, 3 Darwin Street, 28049, Madrid, Spain.
| | - Luis Martínez-Sobrido
- Department of Microbiology and Immunology, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, New York, 14642, USA.
| |
Collapse
|
115
|
Generation and Characterization of a Polyclonal Antibody Against NS1 Protein for Detection of Zika Virus. Jundishapur J Microbiol 2019. [DOI: 10.5812/jjm.96070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
|
116
|
Multiple Virtual Screening Strategies for the Discovery of Novel Compounds Active Against Dengue Virus: A Hit Identification Study. Sci Pharm 2019. [DOI: 10.3390/scipharm88010002] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Dengue infection is caused by a mosquito-borne virus, particularly in children, which may even cause death. No effective prevention or therapeutic agents to cure this disease are available up to now. The dengue viral envelope (E) protein was discovered to be a promising target for inhibition in several steps of viral infection. Structure-based virtual screening has become an important technique to identify first hits in a drug screening process, as it is possible to reduce the number of compounds to be assayed, allowing to save resources. In the present study, pharmacophore models were generated using the common hits approach (CHA), starting from trajectories obtained from molecular dynamics (MD) simulations of the E protein complexed with the active inhibitor, flavanone (FN5Y). Subsequently, compounds presented in various drug databases were screened using the LigandScout 4.2 program. The obtained hits were analyzed in more detail by molecular docking, followed by extensive MD simulations of the complexes. The highest-ranked compound from this procedure was then synthesized and tested on its inhibitory efficiency by experimental assays.
Collapse
|
117
|
Collins ND, Widen SG, Li L, Swetnam DM, Shi PY, Tesh RB, Sarathy VV. Inter- and intra-lineage genetic diversity of wild-type Zika viruses reveals both common and distinctive nucleotide variants and clusters of genomic diversity. Emerg Microbes Infect 2019; 8:1126-1138. [PMID: 31355708 PMCID: PMC6711133 DOI: 10.1080/22221751.2019.1645572] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Zika virus (ZIKV) strains belong to the East African, West African, and Asian/American phylogenetic lineages. RNA viruses, like ZIKV, exist as populations of genetically-related sequences whose heterogeneity may impact viral fitness, evolution, and virulence. Genetic diversity of representative ZIKVs from each lineage was examined using next generation sequencing (NGS) paired with downstream entropy and single nucleotide variant (SNV) analysis. Comparisons showed that inter-lineage diversity was statistically supported, while intra-lineage diversity. Intra-lineage diversity was significant for East but not West Africa strains. Furthermore, intra-lineage diversity for the Asian/American lineage was not supported for human serum isolates; however, a placenta isolate differed significantly. Relative in the pre-membrane/membrane (prM/M) gene of several ZIKV strains. Additionally, the East African lineage contained a greater number of synonymous SNVs, while a greater number of non-synonymous SNVs were identified for American strains. Further, inter-lineage SNVs were dispersed throughout the genome, whereas intra-lineage non-synonymous SNVs for Asian/American strains clustered within prM/M and NS1 gene. This comprehensive analysis of ZIKV genetic diversity provides a repository of SNV positions across lineages. We posit that increased non-synonymous SNV populations and increased relative genetic diversity of the prM/M and NS1 proteins provides more evidence for their role in ZIKV virulence and fitness.
Collapse
Affiliation(s)
- Natalie D Collins
- a Department of Microbiology and Immunology, University of Texas Medical Branch , Galveston , USA
| | - Steven G Widen
- b Department of Biochemistry and Molecular Biology, University of Texas Medical Branch , Galveston , USA
| | - Li Li
- c Department of Pathology, University of Texas Medical Branch , Galveston , USA
| | - Daniele M Swetnam
- d Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine at University of California , Davis , USA
| | - Pei-Yong Shi
- b Department of Biochemistry and Molecular Biology, University of Texas Medical Branch , Galveston , USA
| | - Robert B Tesh
- c Department of Pathology, University of Texas Medical Branch , Galveston , USA
| | - Vanessa V Sarathy
- c Department of Pathology, University of Texas Medical Branch , Galveston , USA.,e Sealy Institute for Vaccine Sciences, Institute for Human Infections and Immunity, University of Texas Medical Branch , Galveston , USA
| |
Collapse
|
118
|
McArthur MA, Zhang SL, Li L, Tesh RB, Barrett ADT. Molecular Characterization of Hamster-Adapted Yellow Fever Virus. Vector Borne Zoonotic Dis 2019; 20:222-227. [PMID: 31794691 DOI: 10.1089/vbz.2019.2495] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We previously reported two hamster models for viscerotropic yellow fever virus (YFV) infection: one using a YFV strain (Jiménez), isolated from a fatal human case in Panama in 1974, and the other using the prototype YFV strain (Asibi). Asibi hamster passage 7 (P7) was associated with accumulation of seven amino acid substitutions, including five in the envelope protein. In this study we report the genome sequences of the hamster Jiménez P0 and P10 viruses in which we identified only two amino acid substitutions during passage, one each in the nonstructural proteins NS3 and NS5, indicating a role for the nonstructural proteins in increased YFV viscerotropism in the Jiménez hamster model. Thus, there are multiple molecular mechanisms involved in viscerotropism of YFV in the hamster model. Neither Asibi P7 nor Jiménez P10 viruses were viscerotropic in mice or guinea pigs. Thus, the hamster viscerotropic phenotype did not translate to other laboratory rodent species.
Collapse
Affiliation(s)
- Monica A McArthur
- Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, Maryland.,Department of Pediatrics, University of Maryland School of Medicine, Baltimore, Maryland
| | - Shuliu L Zhang
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas
| | - Li Li
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas.,Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, Texas
| | - Robert B Tesh
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas
| | - Alan D T Barrett
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas.,Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, Texas
| |
Collapse
|
119
|
Tokunaga M, Miyamoto Y, Suzuki T, Otani M, Inuki S, Esaki T, Nagao C, Mizuguchi K, Ohno H, Yoneda Y, Okamoto T, Oka M, Matsuura Y. Novel anti-flavivirus drugs targeting the nucleolar distribution of core protein. Virology 2019; 541:41-51. [PMID: 31826845 DOI: 10.1016/j.virol.2019.11.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 11/27/2019] [Accepted: 11/27/2019] [Indexed: 01/04/2023]
Abstract
The risk of infectious diseases caused by Flavivirus is increasing globally. Here, we developed a novel high-throughput screening (HTS) system to evaluate the inhibitory effects of compounds targeting the nuclear localization of the flavivirus core protein. We screened 4000 compounds based on their ability to inhibit the nuclear localization of the core protein, and identified over 20 compounds including inhibitors for cyclin dependent kinase and glycogen synthase kinase. The efficacy of the identified compounds to suppress viral growth was validated in a cell-based infection system. Remarkably, the nucleolus morphology was affected by the treatment with the compounds, suggesting that the nucleolus function is critical for viral propagation. The present HTS system provides a useful strategy for the identification of antivirals against flavivirus by targeting the nucleolar localization of the core protein.
Collapse
Affiliation(s)
- Makoto Tokunaga
- Institute for Advanced Co-Creation Studies, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Yoichi Miyamoto
- Laboratory of Nuclear Transport Dynamics, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan
| | - Tatsuya Suzuki
- Institute for Advanced Co-Creation Studies, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Mayumi Otani
- Laboratory of Nuclear Transport Dynamics, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan
| | - Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Tsuyoshi Esaki
- Laboratory of Bioinformatics, Artificial Intelligence Center for Health and Biomedical Research, National Institute of Biomedical Innovation, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan; Center for Data Science Education and Research, Shiga University, Shiga, Japan
| | - Chioko Nagao
- Laboratory of In-silico Drug Design, Center for Drug Design Research, National Institute of Biomedical Innovation, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan
| | - Kenji Mizuguchi
- Laboratory of Bioinformatics, Artificial Intelligence Center for Health and Biomedical Research, National Institute of Biomedical Innovation, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan; Laboratory of In-silico Drug Design, Center for Drug Design Research, National Institute of Biomedical Innovation, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan; Institute for Protein Research, Osaka University, Osaka, Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Yoshihiro Yoneda
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan
| | - Toru Okamoto
- Institute for Advanced Co-Creation Studies, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan.
| | - Masahiro Oka
- Laboratory of Nuclear Transport Dynamics, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan.
| | - Yoshiharu Matsuura
- Department of Molecular Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| |
Collapse
|
120
|
Poveda-Cuevas SA, Etchebest C, Barroso da Silva FL. Identification of Electrostatic Epitopes in Flavivirus by Computer Simulations: The PROCEEDpKa Method. J Chem Inf Model 2019; 60:944-963. [DOI: 10.1021/acs.jcim.9b00895] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sergio A. Poveda-Cuevas
- Universidade de São Paulo, Programa Interunidades em Bioinformática, Rua do Matão, 1010, BR, 05508-090 São Paulo, São Paulo, Brazil
- Universidade de São Paulo, Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Av. Café, s/no−Campus da USP, BR, 14040-903 Ribeirão Preto, São Paulo, Brazil
- University of São Paulo-Université Sorbonne Paris Cité International Laboratory in Structural Bioinformatics, Av. do Café, s/no−FCFRP, Bloco B, BR, 14040-903 Ribeirão Preto, São Paulo, Brazil
| | - Catherine Etchebest
- Université de Paris, Biologie Intégrée du Globule Rouge, UMR_S1134, BIGR, INSERM, F-75015 Paris, France
- Equipe 2, Dynamique des Structures et des Interactions Moléculaires, Université Paris Diderot−Paris 7, INTS, 6 Rue Alexandre Cabanel, 75015 Paris, France
- Laboratoire d’Excellence GR-Ex, Paris, France
- University of São Paulo-Université Sorbonne Paris Cité International Laboratory in Structural Bioinformatics, Av. do Café, s/no−FCFRP, Bloco B, BR, 14040-903 Ribeirão Preto, São Paulo, Brazil
| | - Fernando L. Barroso da Silva
- Universidade de São Paulo, Programa Interunidades em Bioinformática, Rua do Matão, 1010, BR, 05508-090 São Paulo, São Paulo, Brazil
- Universidade de São Paulo, Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Av. Café, s/no−Campus da USP, BR, 14040-903 Ribeirão Preto, São Paulo, Brazil
- University of São Paulo-Université Sorbonne Paris Cité International Laboratory in Structural Bioinformatics, Av. do Café, s/no−FCFRP, Bloco B, BR, 14040-903 Ribeirão Preto, São Paulo, Brazil
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| |
Collapse
|
121
|
Su KY, Balasubramaniam VRMT. Zika Virus as Oncolytic Therapy for Brain Cancer: Myth or Reality? Front Microbiol 2019; 10:2715. [PMID: 31824472 PMCID: PMC6879458 DOI: 10.3389/fmicb.2019.02715] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Accepted: 11/08/2019] [Indexed: 12/22/2022] Open
Abstract
The ability of self-replicating oncolytic viruses (OVs) to preferentially infect and lyse cancer cells while stimulating anti-tumor immunity of the host strongly indicates its value as a new field of cancer therapeutics to be further explored. The emergence of Zika virus (ZIKV) as a global health threat due to its recent outbreak in Brazil has caught the attention of the scientific community and led to the discovery of its oncolytic potential for the treatment of glioblastoma multiforme (GBM), the most common and fatal brain tumor with poor prognosis. Herein, we evaluate the neurotropism of ZIKV relative to the receptor tyrosine kinase AXL and its ligand Gas6 in viral entry and the RNA-binding protein Musashi-1 (MSI1) in replication which are also overexpressed in GBM, suggesting its potential for specific targeting of the tumor. Additionally, this review discusses genetic modifications performed to enhance safety and efficacy of ZIKV as well as speculates future directions for the OV therapy.
Collapse
Affiliation(s)
- Kar Yan Su
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia.,School of Science, Monash University Malaysia, Bandar Sunway, Malaysia
| | | |
Collapse
|
122
|
Versiani AF, Rocha RP, Mendes TAO, Pereira GC, Coelho dos Reis JGA, Bartholomeu DC, da Fonseca FG. Identification of B-Cell Epitopes with Potential to Serologicaly Discrimnate Dengue from Zika Infections. Viruses 2019; 11:E1079. [PMID: 31752352 PMCID: PMC6893796 DOI: 10.3390/v11111079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 11/14/2019] [Accepted: 11/15/2019] [Indexed: 12/11/2022] Open
Abstract
Dengue is currently one of the most important arbovirus infections worldwide. Early diagnosis is important for disease outcome, particularly for those afflicted with the severe forms of infection. The goal of this work was to identify conserved and polymorphic linear B-cell Dengue virus (DENV) epitopes that could be used for diagnostic purposes. To this end, we aligned the predicted viral proteome of the four DENV serotype and performed in silico B-cell epitope mapping. We developed a script in Perl integrating alignment and prediction information to identify potential serotype-specific epitopes. We excluded epitopes that were similarly present in the yellow fever and zika viruses' proteomes. A total of 15 polymorphic and nine conserved peptides among DENV serotypes were selected. Peptides were spotted on cellulose membranes and tested against sera from rabbits that were monoinfected with each DENV serotype. Although serotype-specific peptides failed to recognize any sera, three conserved peptides were recognized by all anti-dengue sera and were included on an ELISA test employing a well-characterized human sera bank. Of the three peptides, one was able to efficiently identify sera from all four DENV serotypes and to discriminate them from Zika virus positive sera.
Collapse
Affiliation(s)
- Alice F. Versiani
- Laboratório de Virologia Básica e Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (A.F.V.); (R.P.R.); (J.G.A.C.d.R.)
- Laboratório de Pesquisa em Virologia, Departamento de Doenças Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto 15090-000, Brazil
| | - Raissa Prado Rocha
- Laboratório de Virologia Básica e Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (A.F.V.); (R.P.R.); (J.G.A.C.d.R.)
| | - Tiago A. O. Mendes
- Laboratório de Imunologia e Genômica de Parasitos, Departamento de Parasitologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (T.A.O.M.); (D.C.B.)
| | | | - Jordana Graziella A. Coelho dos Reis
- Laboratório de Virologia Básica e Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (A.F.V.); (R.P.R.); (J.G.A.C.d.R.)
| | - Daniella C. Bartholomeu
- Laboratório de Imunologia e Genômica de Parasitos, Departamento de Parasitologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (T.A.O.M.); (D.C.B.)
| | - Flávio G. da Fonseca
- Laboratório de Virologia Básica e Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (A.F.V.); (R.P.R.); (J.G.A.C.d.R.)
| |
Collapse
|
123
|
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.
Collapse
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
| |
Collapse
|
124
|
Yellow Fever: Integrating Current Knowledge with Technological Innovations to Identify Strategies for Controlling a Re-Emerging Virus. Viruses 2019; 11:v11100960. [PMID: 31627415 PMCID: PMC6832525 DOI: 10.3390/v11100960] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/30/2019] [Accepted: 10/11/2019] [Indexed: 01/17/2023] Open
Abstract
Yellow fever virus (YFV) represents a re-emerging zoonotic pathogen, transmitted by mosquito vectors to humans from primate reservoirs. Sporadic outbreaks of YFV occur in endemic tropical regions, causing a viral hemorrhagic fever (VHF) associated with high mortality rates. Despite a highly effective vaccine, no antiviral treatments currently exist. Therefore, YFV represents a neglected tropical disease and is chronically understudied, with many aspects of YFV biology incompletely defined including host range, host–virus interactions and correlates of host immunity and pathogenicity. In this article, we review the current state of YFV research, focusing on the viral lifecycle, host responses to infection, species tropism and the success and associated limitations of the YFV-17D vaccine. In addition, we highlight the current lack of available treatments and use publicly available sequence and structural data to assess global patterns of YFV sequence diversity and identify potential drug targets. Finally, we discuss how technological advances, including real-time epidemiological monitoring of outbreaks using next-generation sequencing and CRISPR/Cas9 modification of vector species, could be utilized in future battles against this re-emerging pathogen which continues to cause devastating disease.
Collapse
|
125
|
Pérez-Olais JH, Ruiz-Jiménez F, Calderón-Garcia EJ, De Jesús-González LA, Hernández-Rivas R, Del Angel RM. The activity of Aurora kinase B is required for dengue virus release. Virus Res 2019; 274:197777. [PMID: 31626875 DOI: 10.1016/j.virusres.2019.197777] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 09/11/2019] [Accepted: 10/07/2019] [Indexed: 12/24/2022]
Abstract
Flaviviruses, such as Dengue (DENV), Zika, Yellow Fever, Japanese Encephalitis and West Nile are important pathogens with high morbidity and mortality. The last estimation indicates that ∼390 millions of people are infected by DENV per year. The DENV replicative cycle occurs mainly in the cytoplasm of the infected cells and different cytoplasmic, nuclear and mitochondrial proteins participate in viral replication. In this paper we analyzed the participation of Aurora kinase B (AurKB) in the DENV replicative cycle using the specific AurKB inhibitor ZM 447439. The kinase inhibition does not alter the viral protein production/secretion or genome replication but impaired the viral yield without altering the percentage of infected cells. Moreover, confocal microscopy analysis of DENV-infected ZM 447439-treated cells show a delocalization of viral components from the replicative complexes. In summary, these observations indicate that AurKB participates in DENV viral morphogenesis or release.
Collapse
Affiliation(s)
- J Humberto Pérez-Olais
- Infectomics and Molecular Pathogenesis Department, Center for Research and Advanced Studies-IPN, Mexico City, Mexico.
| | - Fernando Ruiz-Jiménez
- Molecular Virology, School of life Sciences, The Nottingham University, Nottingham, UK.
| | - Esther J Calderón-Garcia
- Infectomics and Molecular Pathogenesis Department, Center for Research and Advanced Studies-IPN, Mexico City, Mexico.
| | - L Adrián De Jesús-González
- Infectomics and Molecular Pathogenesis Department, Center for Research and Advanced Studies-IPN, Mexico City, Mexico.
| | - Rosaura Hernández-Rivas
- Molecular Biomedicine Department, Center for Research and Advanced Studies- IPN, Mexico City, Mexico.
| | - Rosa M Del Angel
- Infectomics and Molecular Pathogenesis Department, Center for Research and Advanced Studies-IPN, Mexico City, Mexico.
| |
Collapse
|
126
|
Sariyer IK, Gordon J, Burdo TH, Wollebo HS, Gianti E, Donadoni M, Bellizzi A, Cicalese S, Loomis R, Robinson JA, Carnevale V, Steiner J, Ozdener MH, Miller AD, Amini S, Klein ML, Khalili K. Suppression of Zika Virus Infection in the Brain by the Antiretroviral Drug Rilpivirine. Mol Ther 2019; 27:2067-2079. [PMID: 31653397 DOI: 10.1016/j.ymthe.2019.10.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 10/03/2019] [Accepted: 10/04/2019] [Indexed: 01/02/2023] Open
Abstract
Zika virus (ZIKV) infection is associated with microcephaly in neonates and Guillain-Barré syndrome in adults. ZIKV produces a class of nonstructural (NS) regulatory proteins that play a critical role in viral transcription and replication, including NS5, which possesses RNA-dependent RNA polymerase (RdRp) activity. Here we demonstrate that rilpivirine (RPV), a non-nucleoside reverse transcriptase inhibitor (NNRTI) used in the treatment of HIV-1 infection, inhibits the enzymatic activity of NS5 and suppresses ZIKV infection and replication in primary human astrocytes. Similarly, other members of the NNRTI family, including etravirine and efavirenz, showed inhibitory effects on viral infection of brain cells. Site-directed mutagenesis identified 14 amino acid residues within the NS5 RdRp domain (AA265-903), which are important for the RPV interaction and the inhibition of NS5 polymerase activity. Administration of RPV to ZIKV-infected interferon-alpha/beta receptor (IFN-A/R) knockout mice improved the clinical outcome and prevented ZIKV-induced mortality. Histopathological examination of the brains from infected animals revealed that RPV reduced ZIKV RNA levels in the hippocampus, frontal cortex, thalamus, and cerebellum. Repurposing of NNRTIs, such as RPV, for the inhibition of ZIKV replication offers a possible therapeutic strategy for the prevention and treatment of ZIKV-associated disease.
Collapse
Affiliation(s)
- Ilker Kudret Sariyer
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA
| | - Jennifer Gordon
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA
| | - Tricia H Burdo
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA
| | - Hassen S Wollebo
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA
| | - Eleonora Gianti
- Department of Chemistry, Institute for Computational Molecular Science, College of Science and Technology, Temple University, 1901 N. 12(th) Street, Philadelphia, PA 19122, USA
| | - Martina Donadoni
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA
| | - Anna Bellizzi
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA
| | - Stephanie Cicalese
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA
| | - Regina Loomis
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA
| | - Jake A Robinson
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA
| | - Vincenzo Carnevale
- Department of Chemistry, Institute for Computational Molecular Science, College of Science and Technology, Temple University, 1901 N. 12(th) Street, Philadelphia, PA 19122, USA
| | - Joseph Steiner
- Translational Neuroscience Center, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
| | - Mehmet H Ozdener
- Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA 19104, USA
| | - Andrew D Miller
- College of Veterinary Medicine, Cornell University, T5-006A Veterinary Research Tower, Ithaca, NY 14853, USA
| | - Shohreh Amini
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA
| | - Michael L Klein
- Department of Chemistry, Institute for Computational Molecular Science, College of Science and Technology, Temple University, 1901 N. 12(th) Street, Philadelphia, PA 19122, USA
| | - Kamel Khalili
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA.
| |
Collapse
|
127
|
Furnon W, Fender P, Confort MP, Desloire S, Nangola S, Kitidee K, Leroux C, Ratinier M, Arnaud F, Lecollinet S, Boulanger P, Hong SS. Remodeling of the Actin Network Associated with the Non-Structural Protein 1 (NS1) of West Nile Virus and Formation of NS1-Containing Tunneling Nanotubes. Viruses 2019; 11:v11100901. [PMID: 31569658 PMCID: PMC6832617 DOI: 10.3390/v11100901] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/24/2019] [Accepted: 09/24/2019] [Indexed: 12/14/2022] Open
Abstract
The cellular response to the recombinant NS1 protein of West Nile virus (NS1WNV) was studied using three different cell types: Vero E6 simian epithelial cells, SH-SY5Y human neuroblastoma cells, and U-87MG human astrocytoma cells. Cells were exposed to two different forms of NS1WNV: (i) the exogenous secreted form, sNS1WNV, added to the extracellular milieu; and (ii) the endogenous NS1WNV, the intracellular form expressed in plasmid-transfected cells. The cell attachment and uptake of sNS1WNV varied with the cell type and were only detectable in Vero E6 and SH-SY5Y cells. Addition of sNS1WNV to the cell culture medium resulted in significant remodeling of the actin filament network in Vero E6 cells. This effect was not observed in SH-SY5Y and U-87MG cells, implying that the cellular uptake of sNS1WNV and actin network remodeling were dependent on cell type. In the three cell types, NS1WNV-expressing cells formed filamentous projections reminiscent of tunneling nanotubes (TNTs). These TNT-like projections were found to contain actin and NS1WNV proteins. Interestingly, similar actin-rich, TNT-like filaments containing NS1WNV and the viral envelope glycoprotein EWNV were also observed in WNV-infected Vero E6 cells.
Collapse
Affiliation(s)
- Wilhelm Furnon
- Université de Lyon, University Claude Bernard Lyon 1, INRA, EPHE, IVPC, UMR754, Viral Infections & Comparative Pathology, Cedex 07, 69366 Lyon, France.
| | - Pascal Fender
- Institut de Biologie Structurale, CNRS UMR 5075, 38042 Grenoble, France.
| | - Marie-Pierre Confort
- Université de Lyon, University Claude Bernard Lyon 1, INRA, EPHE, IVPC, UMR754, Viral Infections & Comparative Pathology, Cedex 07, 69366 Lyon, France.
| | - Sophie Desloire
- Université de Lyon, University Claude Bernard Lyon 1, INRA, EPHE, IVPC, UMR754, Viral Infections & Comparative Pathology, Cedex 07, 69366 Lyon, France.
| | - Sawitree Nangola
- Department of Medical Technology, School of Allied Health Sciences, University of Phayao, Phayao 56000, Thailand.
| | - Kuntida Kitidee
- Center for Research & Innovation, Faculty of Medical Technology, Mahidol University, Nakhon Pathom 73170, Thailand.
| | - Caroline Leroux
- Université de Lyon, University Claude Bernard Lyon 1, INRA, EPHE, IVPC, UMR754, Viral Infections & Comparative Pathology, Cedex 07, 69366 Lyon, France.
| | - Maxime Ratinier
- Université de Lyon, University Claude Bernard Lyon 1, INRA, EPHE, IVPC, UMR754, Viral Infections & Comparative Pathology, Cedex 07, 69366 Lyon, France.
- EPHE, PSL Research University, INRA, Université de Lyon, University Claude Bernard Lyon 1, UMR754, IVPC, Cedex 07, 69366 Lyon, France.
| | - Frédérick Arnaud
- Université de Lyon, University Claude Bernard Lyon 1, INRA, EPHE, IVPC, UMR754, Viral Infections & Comparative Pathology, Cedex 07, 69366 Lyon, France.
- EPHE, PSL Research University, INRA, Université de Lyon, University Claude Bernard Lyon 1, UMR754, IVPC, Cedex 07, 69366 Lyon, France.
| | - Sylvie Lecollinet
- UMR-1161 Virology, ANSES, INRA, Ecole Nationale Vétérinaire d'Alfort, ANSES Animal Health Laboratory, EURL on Equine Diseases, 94704 Maisons-Alfort, France.
| | - Pierre Boulanger
- Université de Lyon, University Claude Bernard Lyon 1, INRA, EPHE, IVPC, UMR754, Viral Infections & Comparative Pathology, Cedex 07, 69366 Lyon, France.
| | - Saw-See Hong
- Université de Lyon, University Claude Bernard Lyon 1, INRA, EPHE, IVPC, UMR754, Viral Infections & Comparative Pathology, Cedex 07, 69366 Lyon, France.
- Institut National de la Santé et de la Recherche Médicale, 101, rue de Tolbiac, Cedex 13, 75654 Paris, France.
| |
Collapse
|
128
|
Sornjai W, Ramphan S, Wikan N, Auewarakul P, Smith DR. High correlation between Zika virus NS1 antibodies and neutralizing antibodies in selected serum samples from normal healthy Thais. Sci Rep 2019; 9:13498. [PMID: 31534148 PMCID: PMC6751300 DOI: 10.1038/s41598-019-49569-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 08/28/2019] [Indexed: 11/30/2022] Open
Abstract
Despite the widespread presence of the mosquito transmitted Zika virus (ZIKV) over much of Southeast Asia, the number of reported cases remains low. One possibility is that residents in Southeast Asia are immunologically protected, although the nature of any such protection remains unclear. This study sought to investigate the presence of antibodies directed to ZIKV NS1 protein in a selected sub-set of samples from a well characterized cohort of serum samples from normal, healthy Thais that had been previously characterized for the presence of neutralizing antibodies to ZIKV, DENV 1-4, and JEV. Because of similarities in molecular weight between the flavivirus E and NS1 proteins, an immunoblot system was established in which the NS1 antigen was not denatured, allowing detection of the dimer form of NS1, distinctly clear from the migration position of the E and NS1 monomer proteins. The results showed that antibodies to ZIKV NS1 protein were only detected in samples with ZIKV neutralizing antibodies (27/30 samples), and no sample (0/30) with a ZIKV plaque reduction neutralization test (PRNT)90 < 20 showed evidence of anti-ZIKV NS1 antibodies. The high correlation between the presence of ZIKV NS1 antibodies and ZIKV PRNT suggests that immunological protection against ZIKV infection in Thailand arises from prior exposure to ZIKV, and not through cross neutralization.
Collapse
Affiliation(s)
- Wannapa Sornjai
- Department of Microbiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Institute of Molecular Biosciences, Mahidol University, Salaya, Thailand
| | - Suwipa Ramphan
- Institute of Molecular Biosciences, Mahidol University, Salaya, Thailand
| | - Nitwara Wikan
- Institute of Molecular Biosciences, Mahidol University, Salaya, Thailand
| | - Prasert Auewarakul
- Department of Microbiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Duncan R Smith
- Institute of Molecular Biosciences, Mahidol University, Salaya, Thailand.
| |
Collapse
|
129
|
Huang J, Yin H, Yin P, Jian X, Song S, Luan J, Zhang L. SR-BI Interactome Analysis Reveals a Proviral Role for UGGT1 in Hepatitis C Virus Entry. Front Microbiol 2019; 10:2043. [PMID: 31551978 PMCID: PMC6743029 DOI: 10.3389/fmicb.2019.02043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 08/20/2019] [Indexed: 12/26/2022] Open
Abstract
Hepatitis C virus (HCV) entry is mediated by multiple co-receptors including scavenger receptor class B, type I (SR-BI). To elucidate the interactome of human SR-BI, we performed immunoprecipitation (IP) experiment coupled with mass spectrometry (MS) analysis. UDP-glucose:glycoprotein glucosyltransferase 1 (UGGT1), a key component of calnexin cycle involved in protein glycosylation, was identified as a SR-BI-interacting protein. Silencing UGGT1 or N-glycosylation inhibitor treatment reduced SR-BI protein level. Further study demonstrated that human SR-BI was N-glycosylated at nine asparagines. Moreover, HCV entry and infection were reduced by the absence of UGGT1. Interestingly, silencing SR-BI reduced protein stability of UGGT1 and protein quality control function mediated by UGGT1. Our finding not only identified UGGT1 as a HCV host factor, but also identified a UGGT1-mediated protein folding function for SR-BI.
Collapse
Affiliation(s)
- Jiazhao Huang
- Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China.,NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Han Yin
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Peiqi Yin
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xia Jian
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Siqi Song
- Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Junwen Luan
- Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Leiliang Zhang
- Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| |
Collapse
|
130
|
Abstract
Japanese encephalitis is a mosquito-borne disease that occurs in Asia and is caused by Japanese encephalitis virus (JEV), a member of the genus Flavivirus. Although many flaviviruses can cause encephalitis, JEV causes particularly severe neurological manifestations. The virus causes loss of more disability-adjusted life years than any other arthropod-borne virus owing to the frequent neurological sequelae of the condition. Despite substantial advances in our understanding of Japanese encephalitis from in vitro studies and animal models, studies of pathogenesis and treatment in humans are lagging behind. Few mechanistic studies have been conducted in humans, and only four clinical trials of therapies for Japanese encephalitis have taken place in the past 10 years despite an estimated incidence of 69,000 cases per year. Previous trials for Japanese encephalitis might have been too small to detect important benefits of potential treatments. Many potential treatment targets exist for Japanese encephalitis, and pathogenesis and virological studies have uncovered mechanisms by which these drugs could work. In this Review, we summarize the epidemiology, clinical features, prevention and treatment of Japanese encephalitis and focus on potential new therapeutic strategies, based on repurposing existing compounds that are already suitable for human use and could be trialled without delay. We use our newly improved understanding of Japanese encephalitis pathogenesis to posit potential treatments and outline some of the many challenges that remain in tackling the disease in humans.
Collapse
|
131
|
Perdomo HD, Asgari S. The major oligosaccharyl transferase complex genes are not involved in dengue virus replication in Aedes aegypti mosquitoes. Arch Virol 2019; 164:2789-2792. [PMID: 31414286 DOI: 10.1007/s00705-019-04376-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 07/16/2019] [Indexed: 11/26/2022]
Abstract
Replication of the dengue virus (DENV) genome occurs in a vesicle in the endoplasmic reticulum by a complex of host and viral proteins. Two host proteins, STT3A and STT3B, as members of the oligosaccharyl transferase complex, have been implicated in playing structural roles in the vesicle in mammalian cells, and the absence of these proteins has been shown to decrease DENV replication. Aedes aegypti is the main vector of the virus and has been used previously as a model organism to study mosquito-virus interactions. In this study, we found that genes of the oligosaccharyl transferase complex have no effect on replication of DENV in mosquito cells.
Collapse
Affiliation(s)
- Hugo D Perdomo
- Australian Infectious Disease Research Centre, School of Biological Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Sassan Asgari
- Australian Infectious Disease Research Centre, School of Biological Sciences, The University of Queensland, Brisbane, QLD, Australia.
| |
Collapse
|
132
|
Danet L, Beauclair G, Berthet M, Moratorio G, Gracias S, Tangy F, Choumet V, Jouvenet N. Midgut barriers prevent the replication and dissemination of the yellow fever vaccine in Aedes aegypti. PLoS Negl Trop Dis 2019; 13:e0007299. [PMID: 31412040 PMCID: PMC6709925 DOI: 10.1371/journal.pntd.0007299] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 08/26/2019] [Accepted: 07/26/2019] [Indexed: 02/02/2023] Open
Abstract
Background To be transmitted to vertebrate hosts via the saliva of their vectors, arthropod-borne viruses have to cross several barriers in the mosquito body, including the midgut infection and escape barriers. Yellow fever virus (YFV) belongs to the genus Flavivirus, which includes human viruses transmitted by Aedes mosquitoes, such as dengue and Zika viruses. The live-attenuated YFV-17D vaccine has been used safely and efficiently on a large scale since the end of World War II. Early studies have shown, using viral titration from salivary glands of infected mosquitoes, that YFV-17D can infect Aedes aegypti midgut, but does not disseminate to other tissues. Methodology/Principal findings Here, we re-visited this issue using a panel of techniques, such as RT-qPCR, Western blot, immunofluorescence and titration assays. We showed that YFV-17D replication was not efficient in Aedes aegypti midgut, as compared to the clinical isolate YFV-Dakar. Viruses that replicated in the midgut failed to disseminate to secondary organs. When injected into the thorax of mosquitoes, viruses succeeded in replicating into midgut-associated tissues, suggesting that, during natural infection, the block for YFV-17D replication occurs at the basal membrane of the midgut. Conclusions/Significance The two barriers associated with Ae. aegypti midgut prevent YFV-17D replication. Our study contributes to our basic understanding of vector–pathogen interactions and may also aid in the development of non-transmissible live virus vaccines. Most flaviviruses, including yellow fever virus (YFV), are transmitted between hosts by mosquito bites. The yellow fever vaccine (YFV-17D) is one of the safest and most effective live virus vaccine ever developed. It is also used as a platform for engineering vaccines against other health-threatening flaviviruses, such as Japanese encephalitis, West Nile, dengue and Zika viruses. We studied here the replication and dissemination of YFV-17D in mosquitoes. Our data showing that YFV-17D is unable to disseminate to secondary organs, as compared to a YFV clinical isolate, agree with previous studies. We have expanded on this knowledge by quantifying viral RNA production, viral protein expression, viral distribution and infectivity of YFV-17D in the vector midguts. We show that the midgut is a powerful barrier that inhibits YFV-17D dissemination in mosquitoes. Our study contributes to our basic understanding of the interactions between viruses and their vectors, which is key for conceiving new approaches in inhibiting virus transmission and designing non-transmissible live virus vaccines.
Collapse
Affiliation(s)
- Lucie Danet
- Viral Genomics and Vaccination Unit, Institut Pasteur, UMR3569 CNRS, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Guillaume Beauclair
- Viral Genomics and Vaccination Unit, Institut Pasteur, UMR3569 CNRS, Paris, France
| | - Michèle Berthet
- Environment and Infectious Risks Unit, Institut Pasteur, Paris, France
| | - Gonzalo Moratorio
- Viral Populations and Pathogenesis Unit, Institut Pasteur, UMR3569 CNRS, Paris, France
- Laboratorio de Inmunovirología, Institut Pasteur de Montevideo, Montevideo, Uruguay
- Laboratorio de Virología Molecular, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Ségolène Gracias
- Viral Genomics and Vaccination Unit, Institut Pasteur, UMR3569 CNRS, Paris, France
| | - Frédéric Tangy
- Viral Genomics and Vaccination Unit, Institut Pasteur, UMR3569 CNRS, Paris, France
| | - Valérie Choumet
- Environment and Infectious Risks Unit, Institut Pasteur, Paris, France
| | - Nolwenn Jouvenet
- Viral Genomics and Vaccination Unit, Institut Pasteur, UMR3569 CNRS, Paris, France
- * E-mail:
| |
Collapse
|
133
|
Hassert M, Harris MG, Brien JD, Pinto AK. Identification of Protective CD8 T Cell Responses in a Mouse Model of Zika Virus Infection. Front Immunol 2019; 10:1678. [PMID: 31379867 PMCID: PMC6652237 DOI: 10.3389/fimmu.2019.01678] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 07/04/2019] [Indexed: 11/30/2022] Open
Abstract
Many flaviviruses including dengue (DENV), and Zika (ZIKV) have attracted significant attention in the past few years. As many flaviviruses are spread by arthropods, most of the world's population is at risk of encountering a flavivirus, and infection with these viruses has created a significant disease burden worldwide. Vaccination against flaviviruses is thought to be one of the most promising avenues for reducing the disease burden associated with these viruses. The optimism surrounding a vaccine approach is supported by the highly successful vaccines for yellow fever and Japanese encephalitis. Central to the development of new successful vaccines is the understanding of the correlates of protection that will be necessary to engineer into new vaccines. To aid in this endeavor we have directed our efforts to identify correlates of protection that will reduce the disease burden associated with ZIKV and DENV. Within this study we have identified a novel murine ZIKV specific CD8+ T cell epitope, and shown that the ZIKV epitope specific CD8+ T cell response has a distinct immunodominance hierarchy present during acute infection and is detectible as part of the memory T cell responses. Our studies confirm that ZIKV-specific CD8+ T cells are an important correlate of protection for ZIKV and demonstrate that both naïve and ZIKV immune CD8+ T cells are sufficient for protection against a lethal ZIKV infection. Overall this study adds to the body of literature demonstrating a role for CD8+ T cells in controlling flavivirus infection.
Collapse
Affiliation(s)
- Mariah Hassert
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, MO, United States
| | - Madison G Harris
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, MO, United States
| | - James D Brien
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, MO, United States
| | - Amelia K Pinto
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, MO, United States
| |
Collapse
|
134
|
Hu Y, Sun L. Systematic Analysis of Structure Similarity between Zika Virus and Other Flaviviruses. ACS Infect Dis 2019; 5:1070-1080. [PMID: 31038920 DOI: 10.1021/acsinfecdis.9b00047] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Zika virus (ZIKV) infection has caused global concern because of its association with fetal microcephaly and serious neurological complications in adults since 2016. Currently, no specific anti-ZIKV therapy is available to control ZIKV infection. During the last couple of years, the intensive investigation of ZIKV structure has provided significant information for structure-based vaccine and drug design. In this review, we summarized the research progress on the structures of ZIKV and its component proteins. We analyzed the structure identity and the differences between ZIKV and other flaviviruses. This information is crucial to guiding structure-based anti-ZIKV inhibitors and vaccine discovery.
Collapse
Affiliation(s)
- Yuxia Hu
- The Fifth People’s Hospital of Shanghai and Institutes of Biomedical Sciences, Fudan University, 131 Dongan Road, Shanghai 20032, China
| | - Lei Sun
- The Fifth People’s Hospital of Shanghai and Institutes of Biomedical Sciences, Fudan University, 131 Dongan Road, Shanghai 20032, China
| |
Collapse
|
135
|
Lin HH, Yang SP, Tsai MJ, Lin GC, Wu HC, Wu SC. Dengue and Zika Virus Domain III-Flagellin Fusion and Glycan-Masking E Antigen for Prime-Boost Immunization. Theranostics 2019; 9:4811-4826. [PMID: 31367259 PMCID: PMC6643441 DOI: 10.7150/thno.35919] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Accepted: 06/09/2019] [Indexed: 12/13/2022] Open
Abstract
The viral E proteins of dengue virus (DENV) and Zika virus (ZIKV) are the major viral proteins involved in receptor binding and fusion, and for the induction of protective antibodies against viral infections. DIII of the E proteins is an independent domain and stretches out on the virion surface that can elicit type-specific neutralizing antibodies. For recombinant DIII vaccine development, prime-boost immunizations can provide an advantage of eliciting more type-specific neutralizing antibodies by recalling DIII antigens after DIII booster to improve protection. Methods: The DIII of the E genes of DENV and ZIKV were fused with bacterial fliC gene for the expression of flagellin-DIII (FliC-DIII) fusion proteins. Prime-boost immunization strategies by the second-dose booster of four DENV serotype or ZIKV FliC-DIII fusion proteins were used to investigate the induction of neutralizing antibodies and protection against viral infections. Cross-reactive non-neutralizing antibodies in each group of antisera were also examined using in vitro antibody-dependent enhancement (ADE) assay. A series of glycan-masking E antigens were finally constructed for prime-boost immunizations to abolish the elicitation of cross-reactive non-neutralizing antibodies for ADE activity. Results: We showed that inclusion of a bivalent live-attenuated vaccine with a FliC-DIII booster is superior in eliciting neutralization titers and protection in vivo against all four-serotype DENVs. We also demonstrated that recombinant adenovirus vectors encoding four-serotype DENV prMEs with a FliC-DIII prime-boost scheme is capable of eliciting good antibody responses. In contract, recombinant adenovirus vector of ZIKV prME gene priming, followed by ZIKV FliC-DIII booster did not improve vaccine efficacy. The glycan-masking mutation on the ZIKV E protein ij loop (E-248NHT), but not on DENV2 E protein ij loop (E-242NHT), resulted in abolishing the elicitation of cross-reactive antibodies for DENV and ZIKV infection enhancements. Conclusions: Our findings can provide useful information for designing novel immunogens and vaccination strategies in an attempt to develop a safe and efficacious DENV or ZIKV vaccine.
Collapse
|
136
|
Antiviral Agents in Development for Zika Virus Infections. Pharmaceuticals (Basel) 2019; 12:ph12030101. [PMID: 31261947 PMCID: PMC6789597 DOI: 10.3390/ph12030101] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 06/25/2019] [Accepted: 06/26/2019] [Indexed: 02/07/2023] Open
Abstract
In 1947, Zika virus (ZIKV), a mosquito-borne flavivirus was identified in Uganda and subsequently spread to Asia and the Pacific regions. In 2015, it was introduced in Brazil causing an important social and sanitary alarm due to its increased virulence and rapid dissemination. Importantly, ZIKV infections have been associated with severe neurological complications such as Guillain–Barré syndrome and microcephaly in fetuses and newborns. Although enormous efforts were made by investigators in the development of effective countermeasures against ZIKV, there is still no approved specific antiviral drug for the treatment of ZIKV infections. Herein, we review several anti ZIKV candidates including drugs targeting both the virus (structural proteins and enzymes) and cellular elements.
Collapse
|
137
|
Yang D, Li NL, Wei D, Liu B, Guo F, Elbahesh H, Zhang Y, Zhou Z, Chen GY, Li K. The E3 ligase TRIM56 is a host restriction factor of Zika virus and depends on its RNA-binding activity but not miRNA regulation, for antiviral function. PLoS Negl Trop Dis 2019; 13:e0007537. [PMID: 31251739 PMCID: PMC6623546 DOI: 10.1371/journal.pntd.0007537] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 07/11/2019] [Accepted: 06/10/2019] [Indexed: 12/25/2022] Open
Abstract
Infection by Zika virus (ZIKV) is linked to microcephaly and other neurological disorders, posing a significant health threat. Innate immunity is the first line of defense against invading pathogens, but relatively little is understood regarding host intrinsic mechanisms that guard against ZIKV. Here, we show that host tripartite motif-containing protein 56 (TRIM56) poses a barrier to ZIKV infection in cells of neural, epithelial and fibroblast origins. Overexpression of TRIM56, but not an E3 ligase-dead mutant or one lacking a short C-terminal portion, inhibited ZIKV RNA replication. Conversely, depletion of TRIM56 increased viral RNA levels. Although the C-terminal region of TRIM56 bears sequence homology to NHL repeat of TRIM-NHL proteins that regulate miRNA activity, knockout of Dicer, which abolishes production of miRNAs, had no demonstrable effect on ZIKV restriction imposed by TRIM56. Rather, we found that TRIM56 is an RNA-binding protein that associates with ZIKV RNA in infected cells. Moreover, a recombinant TRIM56 fragment comprising the C-terminal 392 residues captured ZIKV RNA in cell-free reactions, indicative of direct interaction. Remarkably, deletion of a short C-terminal tail portion abrogated the TRIM56-ZIKV RNA interaction, concomitant with a loss in antiviral activity. Altogether, our study reveals TRIM56 is an RNA binding protein that acts as a ZIKV restriction factor and provides new insights into the antiviral mechanism by which this E3 ligase tackles flavivirus infections.
Collapse
Affiliation(s)
- Darong Yang
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN, United States of America
- Children’s Foundation Research Institute at Le Bonheur Children’s Hospital, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN, United States of America
| | - Nan L. Li
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN, United States of America
| | - Dahai Wei
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN, United States of America
| | - Baoming Liu
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN, United States of America
| | - Fang Guo
- Baruch S. Blumberg Institute, Doylestown, PA, United States of America
| | - Husni Elbahesh
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN, United States of America
| | - Yunzhi Zhang
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN, United States of America
- Department of Infectious Diseases, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhi Zhou
- Department of Infectious Diseases, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Guo-Yun Chen
- Children’s Foundation Research Institute at Le Bonheur Children’s Hospital, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN, United States of America
| | - Kui Li
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN, United States of America
- * E-mail:
| |
Collapse
|
138
|
Sabino C, Basic M, Bender D, Elgner F, Himmelsbach K, Hildt E. Bafilomycin A1 and U18666A Efficiently Impair ZIKV Infection. Viruses 2019; 11:v11060524. [PMID: 31174294 PMCID: PMC6630673 DOI: 10.3390/v11060524] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/24/2019] [Accepted: 06/04/2019] [Indexed: 01/06/2023] Open
Abstract
Zika virus (ZIKV) is a highly transmissive virus that belongs to the Flaviviridae family, which comprises several other pathogens that threaten human health. This re-emerging virus gained attention during the outbreak in Brazil in 2016, where a considerable number of microcephaly cases in newborns was associated with ZIKV infection during pregnancy. Lacking a preventive vaccine or antiviral drugs, efforts have been made to better understand the viral life cycle. In light of this, the relevance of the endosomal–lysosomal compartment for the ZIKV life cycle was investigated. A549 and SH-SY5Y cells were infected with either the African strain (associated with mild symptoms) or the French Polynesia strain (associated with neurological complications). For both strains, the V-ATPase inhibitor, bafilomycin A1, efficiently inhibited ZIKV entry and prevented the spread of the infection by interfering with viral maturation. Additionally, affecting cholesterol metabolism and transport with the drug U18666A, which inactivates late endosomes and lysosomes, impairs the viral life cycle. The data presented show a clear antiviral effect of two compounds that target the same compartments in different ways. This highlights the relevance of the endosomal–lysosomal compartment for the viral life cycle that should be considered as a target for antivirals.
Collapse
Affiliation(s)
- Catarina Sabino
- Paul-Ehrlich-Institut, Department of Virology, 63225 Langen, Germany.
| | - Michael Basic
- Paul-Ehrlich-Institut, Department of Virology, 63225 Langen, Germany.
| | - Daniela Bender
- Paul-Ehrlich-Institut, Department of Virology, 63225 Langen, Germany.
| | - Fabian Elgner
- Paul-Ehrlich-Institut, Department of Virology, 63225 Langen, Germany.
| | | | - Eberhard Hildt
- Paul-Ehrlich-Institut, Department of Virology, 63225 Langen, Germany.
- German Center for Infection Research (DZIF), 38124 Braunschweig, Germany.
| |
Collapse
|
139
|
Ayres CFJ, Guedes DRD, Paiva MHS, Morais-Sobral MC, Krokovsky L, Machado LC, Melo-Santos MAV, Crespo M, Oliveira CMF, Ribeiro RS, Cardoso OA, Menezes ALB, Laperrière-Jr RC, Luna CF, Oliveira ALS, Leal WS, Wallau GL. Zika virus detection, isolation and genome sequencing through Culicidae sampling during the epidemic in Vitória, Espírito Santo, Brazil. Parasit Vectors 2019; 12:220. [PMID: 31068218 PMCID: PMC6505216 DOI: 10.1186/s13071-019-3461-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 04/27/2019] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Zika virus (ZIKV) has been isolated from many mosquito species in nature, but it is believed that the main vectors in urban environments are species of the genus Aedes. Here, we detected and isolated ZIKV in samples from Aedes aegypti, Aedes taeniorhynchus and Culex quinquefasciatus, collected during the Zika epidemic in Vitória, southeast Brazil. Using quantitative real-time polymerase chain reaction, ZIKV detection was performed in mosquito samples collected from February to April 2016. RESULTS Overall, six pools of mosquitoes were positive for ZIKV: four of Cx. quinquefasciatus, one of Ae. aegypti and one of Ae. taeniorhynchus. Their genomes were sequenced. CONCLUSIONS These results support and strengthen the hypothesis that other mosquito species can also be involved in ZIKV transmission.
Collapse
Affiliation(s)
| | | | - Marcelo Henrique Santos Paiva
- Departamento de Entomologia, Instituto Aggeu Magalhães (IAM), Fundação Oswaldo Cruz, Recife, Brasil.,Universidade Federal de Pernambuco, Caruaru, Brasil
| | | | - Larissa Krokovsky
- Departamento de Entomologia, Instituto Aggeu Magalhães (IAM), Fundação Oswaldo Cruz, Recife, Brasil
| | - Laís Ceschini Machado
- Departamento de Entomologia, Instituto Aggeu Magalhães (IAM), Fundação Oswaldo Cruz, Recife, Brasil
| | | | - Mônica Crespo
- Departamento de Entomologia, Instituto Aggeu Magalhães (IAM), Fundação Oswaldo Cruz, Recife, Brasil
| | | | - Ricardo Silva Ribeiro
- Núcleo de Vigilância em Saúde, Superintendência Regional de Saúde de Vitória, Cariacica, Brasil
| | - Orlei Amaral Cardoso
- Núcleo de Vigilância em Saúde, Superintendência Regional de Saúde de Vitória, Cariacica, Brasil
| | | | - Roberto Costa Laperrière-Jr
- Núcleo Especial de Vigilância Ambiental, Gerência Estratégica de Vigilância em Saúde, Secretaria de Estado da Saúde, Vitória, Brasil
| | - Carlos Feitosa Luna
- Núcleo de Estatística e Geoprocessamento (NEG), Instituto Aggeu Magalhães (IAM), Fundação Oswaldo Cruz, Recife, Brazil
| | - André Luiz Sá Oliveira
- Núcleo de Estatística e Geoprocessamento (NEG), Instituto Aggeu Magalhães (IAM), Fundação Oswaldo Cruz, Recife, Brazil
| | - Walter Soares Leal
- Department of Molecular and Cellular Biology, University of California, Davis, USA
| | - Gabriel Luz Wallau
- Departamento de Entomologia, Instituto Aggeu Magalhães (IAM), Fundação Oswaldo Cruz, Recife, Brasil
| |
Collapse
|
140
|
Chimeric Japanese Encephalitis Virus SA14/SA14-14-2 Was Virulence Attenuated and Protected the Challenge of Wild-Type Strain SA14. CANADIAN JOURNAL OF INFECTIOUS DISEASES & MEDICAL MICROBIOLOGY 2019; 2019:9179308. [PMID: 30944684 PMCID: PMC6421771 DOI: 10.1155/2019/9179308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 12/05/2018] [Accepted: 01/10/2019] [Indexed: 12/28/2022]
Abstract
The attenuated Japanese encephalitis virus (JEV) live vaccine SA14-14-2 prepared from wild-type (WT) strain SA14 was licensed to prevent Japanese encephalitis (JE) in 1989 in China. Many studies showed that the premembrane (prM) and envelope (E) protein were the crucial determinant of virulence and immunogenicity of JEV. So we are interested in whether the substitution of prM/E of JEV WT SA14 with those of vaccine strain SA14-14-2 could decrease neurovirulence and prevent the challenge of JEV WT SA14. Molecular clone technique was used to replace the prM/E gene of JEV WT strain SA14 with those of vaccine strain SA14-14-2 to construct the infectious clone of chimeric virus (designated JEV SA14/SA14-14-2), the chimeric virus recovered from BHK21 cells upon electrotransfection of RNA into BHK21 cells. The results showed that the recovered chimeric virus was highly attenuated in mice, and a single immunization elicited strong protective immunity in a dose-dependent manner. This study increases our understanding of the molecular mechanisms of neurovirulence attenuation and immunogenicity of JEV.
Collapse
|
141
|
Development of a fluorescence-based method for the rapid determination of Zika virus polymerase activity and the screening of antiviral drugs. Sci Rep 2019; 9:5397. [PMID: 30932009 PMCID: PMC6444013 DOI: 10.1038/s41598-019-41998-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 03/20/2019] [Indexed: 12/14/2022] Open
Abstract
Zika virus (ZIKV) is an emerging pathogen that has been associated with large numbers of cases of severe neurologic disease, including Guillain-Barré syndrome and microcephaly. Despite its recent establishment as a serious global public health concern there are no licensed therapeutics to control this virus. Accordingly, there is an urgent need to develop methods for the high-throughput screening of antiviral agents. We describe here a fluorescence-based method to monitor the real-time polymerization activity of Zika virus RNA-dependent RNA polymerase (RdRp). By using homopolymeric RNA template molecules, de novo RNA synthesis can be detected with a fluorescent dye, which permits the specific quantification and kinetics of double-strand RNA formation. ZIKV RdRp activity detected using this fluorescence-based assay positively correlated with traditional assays measuring the incorporation of radiolabeled nucleotides. We also validated this method as a suitable assay for the identification of ZIKV inhibitors targeting the viral polymerase using known broad-spectrum inhibitors. The assay was also successfully adapted to detect RNA polymerization activity by different RdRps, illustrated here using purified RdRps from hepatitis C virus and foot-and-mouth disease virus. The potential of fluorescence-based approaches for the enzymatic characterization of viral polymerases, as well as for high-throughput screening of antiviral drugs, are discussed.
Collapse
|
142
|
Vanwalscappel B, Gadea G, Desprès P. A Viperin Mutant Bearing the K358R Substitution Lost its Anti-ZIKA Virus Activity. Int J Mol Sci 2019; 20:ijms20071574. [PMID: 30934824 PMCID: PMC6480927 DOI: 10.3390/ijms20071574] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 03/01/2019] [Accepted: 03/26/2019] [Indexed: 12/17/2022] Open
Abstract
Interferon-induced viperin (VP) was identified as playing an important role in the innate immune response against Zika virus (ZIKV). The 361 amino acid long human VP protein comprises of a highly conserved C-terminal region, which has been associated with VP antiviral properties against ZIKV. In the present study, we sought to determine whether the very last C-terminal amino-acid residues of VP might play a role in VP-mediated ZIKV inhibition. To address this issue, a recombinant human viperin (rVPwt) was overexpressed by transfection in human epithelial A549 cells. We confirmed that transient overexpression of rVPwt prior to ZIKV infection dramatically reduced viral replication in A549 cells. Deletion of the last 17 C-terminal amino acids of VP resulted in a higher expression level of mutant protein compared to wild-type VP. Mutational analysis revealed that residue substitution at positions 356 to 360 with five alanine led to the same phenotype. The charged residues Asp356, Lys358, and Asp360 were then identified to play a role in the weak level of VPwt protein in A549 cells. Mutant VP bearing the D360A substitution partially rescued ZIKV growth in A549 cells. Remarkably, a single Lys-to-Arg substitution at position 358 was sufficient to abrogate VP antiviral activity against ZIKV. In conclusion, our study showed that Asp356, Lys358, and Asp360 may have an influence on biochemical properties of VP. Our major finding was that Lys358 was a key amino-acid in VP antiviral properties against ZIKV.
Collapse
Affiliation(s)
- Bénédicte Vanwalscappel
- Université de La Réunion, INSERM U1187, CNRS UMR 9192, IRD UMR 249, Unité Mixte Processus Infectieux en Milieu Insulaire Tropical, Plateforme Technologique CYROI, 97491 Sainte-Clotilde, La Réunion, France.
| | - Gilles Gadea
- Université de La Réunion, INSERM U1187, CNRS UMR 9192, IRD UMR 249, Unité Mixte Processus Infectieux en Milieu Insulaire Tropical, Plateforme Technologique CYROI, 97491 Sainte-Clotilde, La Réunion, France.
| | - Philippe Desprès
- Université de La Réunion, INSERM U1187, CNRS UMR 9192, IRD UMR 249, Unité Mixte Processus Infectieux en Milieu Insulaire Tropical, Plateforme Technologique CYROI, 97491 Sainte-Clotilde, La Réunion, France.
| |
Collapse
|
143
|
Optimization of qRT-PCR assay for zika virus detection in human serum and urine. Virus Res 2019; 263:173-178. [PMID: 30742853 DOI: 10.1016/j.virusres.2019.01.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 01/11/2019] [Accepted: 01/21/2019] [Indexed: 12/31/2022]
Abstract
Zika Virus (ZIKV) is a mosquito-borne flavivirus that the World Health Organization (WHO) declared a global concern due to the severity of infection. This study focuses on determining the level of detection of ZIKV RNA in human serum and urine. Known amounts of Zika virus were added to uninfected human serum and urine samples. Different reverse transcriptases were compared to select the optimal enzyme for this application. Zika RNA in these samples was then quantified with qRT-PCR to determine the lower limit of detection in these fluids and to construct a standard curve. Student's t-test of paired samples was used in order to identify statistical differences. The SuperScript III enzyme was able to produce more ZIKV cDNA when compared to PrimeScript. Zika virus RNA was found to be detectable at lower levels (2.5 PFU/mL) in urine than in serum (250 PFU/mL) when using SuperScript III. This study demonstrates how the selection of both the human clinical specimen, and the reverse transcriptase enzyme involved in the molecular detection of ZIKV by quantitative real-time polymerase chain reaction (qRT-PCR), play an important role in enabling improved detection of the virus.
Collapse
|
144
|
Fang Y, Zhang Y, Zhou ZB, Xia S, Shi WQ, Xue JB, Li YY, Wu JT. New strains of Japanese encephalitis virus circulating in Shanghai, China after a ten-year hiatus in local mosquito surveillance. Parasit Vectors 2019; 12:22. [PMID: 30626442 PMCID: PMC6327439 DOI: 10.1186/s13071-018-3267-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 12/12/2018] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Continuous vector pathogen surveillance is essential for preventing outbreaks of mosquito-borne diseases. Several mosquito species acting as vectors of Japanese encephalitis virus (JEV), dengue virus, Zika virus, malaria parasites and other pathogens are primary mosquito species in Shanghai, China. However, few surveys of human pathogenic arboviruses in mosquitoes in Shanghai have been reported in the last ten years. Therefore, in this study, we evaluated mosquito activity in Shanghai, China during 2016 and tested for the presence of alphaviruses, flaviviruses, orthobunyaviruses and several parasitic pathogens. RESULTS Five pooled samples were JEV-positive [4/255 pools of Culex tritaeniorhynchus and 1/256 pools of Cx. pipiens (s.l.)] based on analysis of the NS5 gene. Alphaviruses, orthobunyaviruses, Plasmodium and filariasis were not found in this study. Phylogenetic and molecular analyses revealed that the JEV strains belonged to genotype I. Moreover, newly detected Shanghai JEV strains were genetically close to previously isolated Shandong strains responsible for transmission during the 2013 Japanese encephalitis (JE) outbreak in Shandong Province, China but were more distantly related to other Shanghai strains detected in the early 2000s. The E proteins of the newly detected Shanghai JEV strains differed from that in the live attenuated vaccine SA14-14-2-derived strain at six amino residues: E130 (Ile→Val), E222 (Ala→Ser), E327 (Ser→Thr), E366 (Arg→Ser/Pro), E393 (Asn→Ser) and E433 (Val→Ile). However, no differences were observed in key amino acid sites related to antigenicity. Minimum JEV infection rates were 1.01 and 0.65 per 1000 Cx. tritaeniorhynchus and Cx. pipiens (s.l.), respectively. CONCLUSIONS Five new Shanghai JEV genotype I strains, detected after a ten-year hiatus in local mosquito surveillance, were genetically close to strains involved in the 2013 Shandong JE outbreak. Because JEV is still circulating, vaccination in children should be extensively and continuously promoted. Moreover, JEV mosquito surveillance programmes should document the genotype variation, intensity and distribution of circulating viruses for use in the development and implementation of disease prevention and control strategies.
Collapse
Affiliation(s)
- Yuan Fang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, 20025 People’s Republic of China
| | - Yi Zhang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, 20025 People’s Republic of China
| | - Zheng-Bin Zhou
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, 20025 People’s Republic of China
| | - Shang Xia
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, 20025 People’s Republic of China
| | - Wen-Qi Shi
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, 20025 People’s Republic of China
| | - Jing-Bo Xue
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, 20025 People’s Republic of China
| | - Yuan-Yuan Li
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, 20025 People’s Republic of China
| | - Jia-Tong Wu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, 20025 People’s Republic of China
| |
Collapse
|
145
|
Experimental Evaluation of the Role of Ecologically-Relevant Hosts and Vectors in Japanese Encephalitis Virus Genotype Displacement. Viruses 2019; 11:v11010032. [PMID: 30621345 PMCID: PMC6356879 DOI: 10.3390/v11010032] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 12/23/2018] [Accepted: 01/04/2019] [Indexed: 12/29/2022] Open
Abstract
Japanese encephalitis virus (JEV) is a flavivirus that is maintained via transmission between Culex spp. mosquitoes and water birds across a large swath of southern Asia and northern Australia. Currently JEV is the leading cause of vaccine-preventable encephalitis in humans in Asia. Five genotypes of JEV (G-I–G-V) have been responsible for historical and current outbreaks in endemic regions, and G-I and G-III co-circulate throughout Southern Asia. While G-III has historically been the dominant genotype worldwide, G-I has gradually but steadily displaced G-III. The objective of this study was to better understand the phenomenon of genotype displacement for JEV by evaluating both avian host and mosquito vector susceptibilities to infection with representatives from both G-I and G-III. Since ducks and Culex quinquefasciatus mosquitoes are prevalent avian hosts and vectors perpetuating JEV transmission in JE endemic areas, experimental evaluation of virus replication in these species was considered to approximate the natural conditions necessary for studying the role of host, vectors and viral fitness in the JEV genotype displacement context. We evaluated viremia in ducklings infected with G-I and G-III, and did not detect differences in magnitude or duration of viremia. Testing the same viruses in mosquitoes revealed that the rates of infection, dissemination and transmission were higher in virus strains belonging to G-I than G-III, and that the extrinsic incubation period was shorter for the G-I strains. These data suggest that the characteristics of JEV infection of mosquitoes but not of ducklings, may have play a role in genotype displacement.
Collapse
|
146
|
Farias KJS, Machado PRL, de Almeida Júnior RF, Lopes da Fonseca BA. Brefeldin A and Cytochalasin B reduce dengue virus replication in cell cultures but do not protect mice against viral challenge. Access Microbiol 2019; 1:e000041. [PMID: 32974532 PMCID: PMC7470301 DOI: 10.1099/acmi.0.000041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 06/21/2019] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Dengue is an emerging arboviral disease caused by dengue virus (DENV). DENV belongs to the family Flaviviridae and genus Flavivirus. No specific anti-DENV drugs are currently available. METHODS We investigated the antiviral activity of Brefeldin A (BFA) and Cytochalasin B (CB) against this infection. The drugs BFA and CB were used in the in vitro treatment of dengue-2 virus (DENV-2) infections in Vero cell cultures and in protection from lethality by post-challenge administration in Swiss mice. Viral load was quantified by qRT-PCR and plaque assay in Vero cell cultures, post-infection, treated or not with the drugs. Post-challenge drug levels were evaluated by survival analysis. RESULTS Our results indicate that doses of 5 µg ml-1 of BFA and 10 µg ml-1 of CB are not toxic to the cells and induce a statistically significant inhibition of DENV-2 replication in Vero cells when compared to control. No BFA- or CB-treated mice survived the challenge with DENV-2. CONCLUSION These data suggest that BFA and CB have an antiviral action against DENV-2 replication in Vero cell culture, but do not alter infected mice mortality.
Collapse
Affiliation(s)
- Kleber Juvenal Silva Farias
- Department of Internal Medicine, School of Medicine of Ribeirao Preto – University of Sao Paulo, Avenida Bandeirantes, 3900, Monte Alegre, 14049-900, Ribeirao Preto SP, Brazil
- Program of Graduate Studies on Applied Microbiology and Immunology, School of Medicine of Ribeirao Preto – University of Sao Paulo, Avenida Bandeirantes, 3900, Monte Alegre, 14049-900, Ribeirão Preto SP, Brazil
- *Correspondence: Kleber Juvenal Silva Farias,
| | - Paula Renata Lima Machado
- Department of Clinical Analysis and Toxicology, Federal University of Rio Grande do Norte, Street General Gustavo Cordeiro de Farias, 384, Petropolis, 59012-570 Natal, RN, Brazil
| | - Renato Ferreira de Almeida Júnior
- Department of Clinical Analysis and Toxicology, Federal University of Rio Grande do Norte, Street General Gustavo Cordeiro de Farias, 384, Petropolis, 59012-570 Natal, RN, Brazil
| | - Benedito Antônio Lopes da Fonseca
- Department of Internal Medicine, School of Medicine of Ribeirao Preto – University of Sao Paulo, Avenida Bandeirantes, 3900, Monte Alegre, 14049-900, Ribeirao Preto SP, Brazil
| |
Collapse
|
147
|
Hasan S, Saeed S, Panigrahi R, Choudhary P. Zika Virus: A Global Public Health Menace: A Comprehensive Update. J Int Soc Prev Community Dent 2019; 9:316-327. [PMID: 31516865 PMCID: PMC6714416 DOI: 10.4103/jispcd.jispcd_433_18] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 02/12/2019] [Indexed: 01/07/2023] Open
Abstract
Zika virus (ZIKV) is a RNA virus and belongs to genus Flavivirus and family Flaviviridae. The virus was first discovered from a febrile primate from the Zika forests of Uganda in 1947 and the first human case was documented in 1954. The nonspecific clinical manifestations of ZIKV pose diagnostic dilemmas and delays early and effective treatment. Dental professionals should have a thorough knowledge about the virus and should follow standard infection control measures as the virus has been demonstrated in various body secretions (including salivary secretions). The disease is managed by symptomatic and supportive care and no vaccine exist till date. Recent ZIKV outbreaks and increase association of microcephaly with congenital ZIKV and neurological complications (Guillain-Barré syndrome) has drawn global public health attention. The World Health Organization declared it a public health emergency of international concern in 2016. This review article provides a detailed overview on ZIKV; it is clinical and oral manifestations, diagnostic aids, differential diagnosis, preventive aspects, and management protocol.
Collapse
Affiliation(s)
- Shamimul Hasan
- Department of Oral Medicine and Radiology, Faculty of Dentistry, Jamia Millia Islamia, New Delhi, India,Address for correspondence: Dr. Shamimul Hasan, C/O Mohd Javed Khan, C-4, Duplex Quarters, New Sir Syed Nagar, Aligarh, Uttar Pradesh, India. E-mail:
| | - Shazina Saeed
- Amity Institute of Public Health, Amity University, Noida, Uttar Pradesh, India
| | - Rajat Panigrahi
- Department of Oral Medicine and Radiology, Institute of Dental Sciences, SOA University, Bhubaneswar, Odisha, India
| | - Priyadarshini Choudhary
- Department of Oral Medicine and Radiology, Kalinga Institute of Dental Sciences, KIIT University, Bhubaneswar, Odisha, India
| |
Collapse
|
148
|
Kim YC, Lopez-Camacho C, Nettleship JE, Rahman N, Hill ML, Silva-Reyes L, Ortiz-Martinez G, Figueroa-Aguilar G, Mar MA, Vivanco-Cid H, Rollier CS, Zitzmann N, Viveros-Sandoval ME, Owens RJ, Reyes-Sandoval A. Optimization of Zika virus envelope protein production for ELISA and correlation of antibody titers with virus neutralization in Mexican patients from an arbovirus endemic region. Virol J 2018; 15:193. [PMID: 30587198 PMCID: PMC6307127 DOI: 10.1186/s12985-018-1104-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 12/04/2018] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Zika virus (ZIKV) has become a global threat with immediate need for accurate diagnostics, efficacious vaccines and therapeutics. Several ZIKV envelope (Env)-based vaccines have been developed recently. However, many commercially available ZIKV Env are based on the African lineage and produced in insect cells. Here, we sought to produce Asian-lineage ZIKV Env in mammalian cells for research and clinical applications. METHODS We designed various gene expression constructs to optimize the production of ZIKV using prM-Env and full or C-terminal truncations of Env; with or without a rat CD4 fusion partner to allow large-scale production of soluble protein in mammalian HEK293 cells. Protein expression was verified by mass spectrometry and western-blot with a pan-flavivirus antibody, a ZIKV Env monoclonal antibody and with immune sera from adenoviral (ChAdOx1) ZIKV Env-vaccinated mice. The resulting Env-CD4 was used as a coating reagent for immunoassay (ELISA) using both mouse and human seropositive sera. RESULTS Replacement of the C-terminus transmembrane Env domain by a rat CD4 and addition of prM supported optimal expression and secretion of Env. Binding between the antigens and the antibodies was similar to binding when using commercially available ZIKV Env reagents. Furthermore, antibodies from ZIKV patients bound ZIKV Env-CD4 in ELISA assays, whereas sera from healthy blood donors yielded minimal OD background. The serological outcomes of this assay correlated also with ZIKV neutralisation capacity in vitro. CONCLUSIONS Results obtained from this study indicate the potential of the Asian-lineage Zika Env-CD4 and Env proteins in ELISA assays to monitor humoral immune responses in upcoming clinical trials as well as a sero-diagnostic tool in ZIKV infection.
Collapse
Affiliation(s)
- Young Chan Kim
- The Jenner Institute, Nuffield Department of Medicine, The Henry Wellcome Building for Molecular Physiology, University of Oxford, Old Road Campus Research Building. Roosevelt Drive, Oxford, OX3 7DQ, UK.,Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, UK
| | - Cesar Lopez-Camacho
- The Jenner Institute, Nuffield Department of Medicine, The Henry Wellcome Building for Molecular Physiology, University of Oxford, Old Road Campus Research Building. Roosevelt Drive, Oxford, OX3 7DQ, UK
| | - Joanne E Nettleship
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, UK.,Rutherford Appleton Laboratory, OPPF-UK, Research Complex at Harwell, Oxford, UK
| | - Nahid Rahman
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, UK.,Rutherford Appleton Laboratory, OPPF-UK, Research Complex at Harwell, Oxford, UK
| | - Michelle L Hill
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Laura Silva-Reyes
- Oxford Vaccine Group, Department of Paediatrics, University of Oxford and the NIHR Oxford Biomedical Research Centre, Centre for Clinical Vaccinology and Tropical Medicine, Churchill Hospital, Oxford, UK
| | - Georgina Ortiz-Martinez
- Laboratorio de Hemostasia y Biología Vascular. División de Estudios de Posgrado. Facultad de Ciencias Médicas y Biológicas "Dr. Ignacio Chávez", Universidad Michoacana de San Nicolás de Hidalgo, UMSNH, Morelia, Mexico.,UMSNH-Oxford University of Oxford Clinical Research Laboratory (UMOCRL), Faculty of Biological and Medical Sciences "Dr. Ignacio Chávez", Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | - Gloria Figueroa-Aguilar
- Laboratorio Estatal de Salud Pública, Secretaría de Salud de Michoacán, Morelia, Michoacán, Mexico
| | - María Antonieta Mar
- HGZMF No. 12 Lázaro Cárdenas Michoacán dirección av. Lázaro Cárdenas No. 154 Col. Centro Lázaro Cárdenas Michoacán, Veracruz, Mexico
| | - Héctor Vivanco-Cid
- Instituto de Investigaciones Médico-Biológicas, Universidad Veracruzana, Veracruz, Mexico
| | - Christine S Rollier
- Oxford Vaccine Group, Department of Paediatrics, University of Oxford and the NIHR Oxford Biomedical Research Centre, Centre for Clinical Vaccinology and Tropical Medicine, Churchill Hospital, Oxford, UK
| | - Nicole Zitzmann
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Martha Eva Viveros-Sandoval
- Laboratorio de Hemostasia y Biología Vascular. División de Estudios de Posgrado. Facultad de Ciencias Médicas y Biológicas "Dr. Ignacio Chávez", Universidad Michoacana de San Nicolás de Hidalgo, UMSNH, Morelia, Mexico.,UMSNH-Oxford University of Oxford Clinical Research Laboratory (UMOCRL), Faculty of Biological and Medical Sciences "Dr. Ignacio Chávez", Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | - Raymond J Owens
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, UK.,Rutherford Appleton Laboratory, OPPF-UK, Research Complex at Harwell, Oxford, UK
| | - Arturo Reyes-Sandoval
- The Jenner Institute, Nuffield Department of Medicine, The Henry Wellcome Building for Molecular Physiology, University of Oxford, Old Road Campus Research Building. Roosevelt Drive, Oxford, OX3 7DQ, UK.
| |
Collapse
|
149
|
Ke PY. The Multifaceted Roles of Autophagy in Flavivirus-Host Interactions. Int J Mol Sci 2018; 19:ijms19123940. [PMID: 30544615 PMCID: PMC6321027 DOI: 10.3390/ijms19123940] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 12/05/2018] [Accepted: 12/05/2018] [Indexed: 02/06/2023] Open
Abstract
Autophagy is an evolutionarily conserved cellular process in which intracellular components are eliminated via lysosomal degradation to supply nutrients for organelle biogenesis and metabolic homeostasis. Flavivirus infections underlie multiple human diseases and thus exert an immense burden on public health worldwide. Mounting evidence indicates that host autophagy is subverted to modulate the life cycles of flaviviruses, such as hepatitis C virus, dengue virus, Japanese encephalitis virus, West Nile virus and Zika virus. The diverse interplay between autophagy and flavivirus infection not only regulates viral growth in host cells but also counteracts host stress responses induced by viral infection. In this review, we summarize the current knowledge on the role of autophagy in the flavivirus life cycle. We also discuss the impacts of virus-induced autophagy on the pathogeneses of flavivirus-associated diseases and the potential use of autophagy as a therapeutic target for curing flavivirus infections and related human diseases.
Collapse
Affiliation(s)
- Po-Yuan Ke
- Department of Biochemistry & Molecular Biology and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan.
- Liver Research Center, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan.
- Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan.
| |
Collapse
|
150
|
Vechtova P, Sterbova J, Sterba J, Vancova M, Rego ROM, Selinger M, Strnad M, Golovchenko M, Rudenko N, Grubhoffer L. A bite so sweet: the glycobiology interface of tick-host-pathogen interactions. Parasit Vectors 2018; 11:594. [PMID: 30428923 PMCID: PMC6236881 DOI: 10.1186/s13071-018-3062-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 08/14/2018] [Indexed: 11/10/2022] Open
Abstract
Vector-borne diseases constitute 17% of all infectious diseases in the world; among the blood-feeding arthropods, ticks transmit the highest number of pathogens. Understanding the interactions between the tick vector, the mammalian host and the pathogens circulating between them is the basis for the successful development of vaccines against ticks or the tick-transmitted pathogens as well as for the development of specific treatments against tick-borne infections. A lot of effort has been put into transcriptomic and proteomic analyses; however, the protein-carbohydrate interactions and the overall glycobiology of ticks and tick-borne pathogens has not been given the importance or priority deserved. Novel (bio)analytical techniques and their availability have immensely increased the possibilities in glycobiology research and thus novel information in the glycobiology of ticks and tick-borne pathogens is being generated at a faster pace each year. This review brings a comprehensive summary of the knowledge on both the glycosylated proteins and the glycan-binding proteins of the ticks as well as the tick-transmitted pathogens, with emphasis on the interactions allowing the infection of both the ticks and the hosts by various bacteria and tick-borne encephalitis virus.
Collapse
Affiliation(s)
- Pavlina Vechtova
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Branišovská 31, CZ-37005, České Budějovice, Czech Republic. .,Faculty of Science, University of South Bohemia, Branišovská 1760, CZ-37005, České Budějovice, Czech Republic.
| | - Jarmila Sterbova
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Branišovská 31, CZ-37005, České Budějovice, Czech Republic.,Faculty of Science, University of South Bohemia, Branišovská 1760, CZ-37005, České Budějovice, Czech Republic
| | - Jan Sterba
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Branišovská 31, CZ-37005, České Budějovice, Czech Republic.,Faculty of Science, University of South Bohemia, Branišovská 1760, CZ-37005, České Budějovice, Czech Republic
| | - Marie Vancova
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Branišovská 31, CZ-37005, České Budějovice, Czech Republic.,Faculty of Science, University of South Bohemia, Branišovská 1760, CZ-37005, České Budějovice, Czech Republic
| | - Ryan O M Rego
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Branišovská 31, CZ-37005, České Budějovice, Czech Republic.,Faculty of Science, University of South Bohemia, Branišovská 1760, CZ-37005, České Budějovice, Czech Republic
| | - Martin Selinger
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Branišovská 31, CZ-37005, České Budějovice, Czech Republic.,Faculty of Science, University of South Bohemia, Branišovská 1760, CZ-37005, České Budějovice, Czech Republic
| | - Martin Strnad
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Branišovská 31, CZ-37005, České Budějovice, Czech Republic.,Faculty of Science, University of South Bohemia, Branišovská 1760, CZ-37005, České Budějovice, Czech Republic
| | - Maryna Golovchenko
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Branišovská 31, CZ-37005, České Budějovice, Czech Republic
| | - Nataliia Rudenko
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Branišovská 31, CZ-37005, České Budějovice, Czech Republic
| | - Libor Grubhoffer
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Branišovská 31, CZ-37005, České Budějovice, Czech Republic.,Faculty of Science, University of South Bohemia, Branišovská 1760, CZ-37005, České Budějovice, Czech Republic
| |
Collapse
|