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Muthukumaran R, Sankararamakrishnan R. Differences in the Membrane-Binding Properties of Flaviviral Nonstructural 1 (NS1) Protein: Comparative Simulations of Zika and Dengue Virus NS1 Proteins in Explicit Bilayers. ACS BIO & MED CHEM AU 2024; 4:137-153. [PMID: 38911907 PMCID: PMC11191575 DOI: 10.1021/acsbiomedchemau.3c00073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 03/01/2024] [Accepted: 03/01/2024] [Indexed: 06/25/2024]
Abstract
NS1 in flaviviruses is the only nonstructural protein that is secretory and interacts with different cellular components of the host cell membrane. NS1 is localized in the ER as a dimer to facilitate viral replication. Crystal structures of NS1 homologues from zika (ZIKV) and dengue (DENV) viruses have revealed the organization of different domains in NS1 dimers. The β-roll and the connector and intertwined loop regions of wing domains of NS1 have been shown to interact with the membranes. In this study, we have performed multiple molecular dynamics (MD) simulations of ZIKV and DENV NS1 systems in apo and in POPE bilayers with different cholesterol concentrations (0, 20 and 40%). The NS1 protein was placed just above the membrane surface, and for each NS1-membrane system two to three independent simulations with 600 ns production run were performed. At the end of the production runs, ZIKV NS1 inserts deeper inside the membrane compared to the DENV counterpart. Unlike ZIKV NS1, the orientation of DENV NS1 is asymmetric in which one of the chains in the dimer interacts with the membrane while the other is more exposed to the solvent. The β-roll region in ZIKV NS1 penetrates beyond the headgroup region and interacts with the lipid acyl chains while the C-terminal region barely interacts with the headgroup. Specific residues in the intertwined region deeply penetrate inside the membrane. The role of charged and aromatic residues of ZIKV NS1 in strongly interacting with the membrane components is revealed. The presence of cholesterol affects the extent of insertion in the membrane and interaction of individual residues. Overall, membrane-binding properties of ZIKV NS1 significantly differ from its counterpart in DENV. The differences found in the binding and insertion of NS1 can be used to design drugs and novel antibodies that can be flavivirus specific.
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Affiliation(s)
- Rajagopalan Muthukumaran
- Department
of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Ramasubbu Sankararamakrishnan
- Department
of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
- Mehta
Family Center for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur 208016, India
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Pereira SH, Sá Magalhães Serafim M, Moraes TDFS, Zini N, Abrahão JS, Nogueira ML, Coelho dos Reis JGA, Bagno FF, da Fonseca FG. Design, development, and validation of multi-epitope proteins for serological diagnosis of Zika virus infections and discrimination from dengue virus seropositivity. PLoS Negl Trop Dis 2024; 18:e0012100. [PMID: 38635656 PMCID: PMC11025737 DOI: 10.1371/journal.pntd.0012100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 03/22/2024] [Indexed: 04/20/2024] Open
Abstract
Zika virus (ZIKV), an arbovirus from the Flaviviridae family, is the causative agent of Zika fever, a mild and frequent oligosymptomatic disease in humans. Nonetheless, on rare occasions, ZIKV infection can be associated with Guillain-Barré Syndrome (GBS), and severe congenital complications, such as microcephaly. The oligosymptomatic disease, however, presents symptoms that are quite similar to those observed in infections caused by other frequent co-circulating arboviruses, including dengue virus (DENV). Moreover, the antigenic similarity between ZIKV and DENV, and even with other members of the Flaviviridae family, complicates serological testing due to the high cross-reactivity of antibodies. Here, we designed, produced in a prokaryotic expression system, and purified three multiepitope proteins (ZIKV-1, ZIKV-2, and ZIKV-3) for differential diagnosis of Zika. The proteins were evaluated as antigens in ELISA tests for the detection of anti-ZIKV IgG using ZIKV- and DENV-positive human sera. The recombinant proteins were able to bind and detect anti-ZIKV antibodies without cross-reactivity with DENV-positive sera and showed no reactivity with Chikungunya virus (CHIKV)- positive sera. ZIKV-1, ZIKV-2, and ZIKV-3 proteins presented 81.6%, 95%, and 66% sensitivity and 97%, 96%, and 84% specificity, respectively. Our results demonstrate the potential of the designed and expressed antigens in the development of specific diagnostic tests for the detection of IgG antibodies against ZIKV, especially in regions with the circulation of multiple arboviruses.
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Affiliation(s)
- Samille Henriques Pereira
- Laboratório de Virologia Básica e Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mateus Sá Magalhães Serafim
- Laboratório de Vírus, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Thaís de Fátima Silva Moraes
- Laboratório de Virologia Básica e Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Nathalia Zini
- Laboratório de Pesquisa em Virologia, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, São Paulo, Brazil
- Centro de Tecnologia em Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Jônatas Santos Abrahão
- Laboratório de Vírus, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Maurício Lacerda Nogueira
- Laboratório de Pesquisa em Virologia, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, São Paulo, Brazil
| | | | - Flávia Fonseca Bagno
- Centro de Tecnologia em Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Flávio Guimarães da Fonseca
- Laboratório de Virologia Básica e Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Centro de Tecnologia em Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Prudencio CR, Gomes da Costa V, Rocha LB, da Costa HHM, Orts DJB, da Silva Santos FR, Rahal P, Lino NAB, da Conceição PJP, Bittar C, Machado RRG, Durigon EL, Araujo JP, Polatto JM, da Silva MA, de Oliveira JA, Mitsunari T, Pereira LR, Andreata-Santos R, de Souza Ferreira LC, Luz D, Piazza RMF. Identification of Zika Virus NS1-Derived Peptides with Potential Applications in Serological Tests. Viruses 2023; 15:v15030654. [PMID: 36992364 PMCID: PMC10052002 DOI: 10.3390/v15030654] [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: 12/21/2022] [Revised: 02/14/2023] [Accepted: 02/23/2023] [Indexed: 03/05/2023] Open
Abstract
Zika virus (ZIKV), a mosquito-borne pathogen, is an emerging arbovirus associated with sporadic symptomatic cases of great medical concern, particularly among pregnant women and newborns affected with neurological disorders. Serological diagnosis of ZIKV infection is still an unmet challenge due to the co-circulation of the dengue virus, which shares extensive sequence conservation of structural proteins leading to the generation of cross-reactive antibodies. In this study, we aimed to obtain tools for the development of improved serological tests for the detection of ZIKV infection. Polyclonal sera (pAb) and a monoclonal antibody (mAb 2F2) against a recombinant form of the ZIKV nonstructural protein 1 (NS1) allowed the identification of linear peptide epitopes of the NS1 protein. Based on these findings, six chemically synthesized peptides were tested both in dot blot and ELISA assays using convalescent sera collected from ZIKV-infected patients. Two of these peptides specifically detected the presence of ZIKV antibodies and proved to be candidates for the detection of ZIKV-infected subjects. The availability of these tools opens perspectives for the development of NS1-based serological tests with enhanced sensitivity regarding other flaviviruses.
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Affiliation(s)
- Carlos Roberto Prudencio
- Laboratório de Imunobiotecnologia, Centro de Imunologia, Instituto Adolfo Lutz, Av. Dr. Arnaldo, 351, São Paulo 01246-902, SP, Brazil
- Correspondence: (C.R.P.); (D.L.); (R.M.F.P.); Tel.: +55-11-3068-2886 (C.R.P.); +55-11-2627-9708 (D.L.); +55-11-2627-9724 (R.M.F.P.)
| | - Vivaldo Gomes da Costa
- Instituto de Biociências Letras e Ciências Exatas, Universidade Estadual Paulista Júlio de Mesquita Filho, Rua Cristóvão Colombo, 2265, São Jose do Rio Preto 15054-000, SP, Brazil
| | - Leticia Barboza Rocha
- Laboratório de Bacteriologia, Instituto Butantan, Av. Vital Brazil, 1500, São Paulo 05503-900, SP, Brazil
| | - Hernan Hermes Monteiro da Costa
- Laboratório de Imunobiotecnologia, Centro de Imunologia, Instituto Adolfo Lutz, Av. Dr. Arnaldo, 351, São Paulo 01246-902, SP, Brazil
| | - Diego José Belato Orts
- Laboratório de Imunobiotecnologia, Centro de Imunologia, Instituto Adolfo Lutz, Av. Dr. Arnaldo, 351, São Paulo 01246-902, SP, Brazil
| | - Felipe Rocha da Silva Santos
- Laboratório de Imunobiotecnologia, Centro de Imunologia, Instituto Adolfo Lutz, Av. Dr. Arnaldo, 351, São Paulo 01246-902, SP, Brazil
| | - Paula Rahal
- Instituto de Biociências Letras e Ciências Exatas, Universidade Estadual Paulista Júlio de Mesquita Filho, Rua Cristóvão Colombo, 2265, São Jose do Rio Preto 15054-000, SP, Brazil
| | - Nikolas Alexander Borsato Lino
- Instituto de Biociências Letras e Ciências Exatas, Universidade Estadual Paulista Júlio de Mesquita Filho, Rua Cristóvão Colombo, 2265, São Jose do Rio Preto 15054-000, SP, Brazil
| | - Pâmela Jóyce Previdelli da Conceição
- Instituto de Biociências Letras e Ciências Exatas, Universidade Estadual Paulista Júlio de Mesquita Filho, Rua Cristóvão Colombo, 2265, São Jose do Rio Preto 15054-000, SP, Brazil
| | - Cintia Bittar
- Instituto de Biociências Letras e Ciências Exatas, Universidade Estadual Paulista Júlio de Mesquita Filho, Rua Cristóvão Colombo, 2265, São Jose do Rio Preto 15054-000, SP, Brazil
| | - Rafael Rahal Guaragna Machado
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil
| | - Edison Luiz Durigon
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil
| | - João Pessoa Araujo
- Instituto de Biotecnologia, Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu 18607-440, SP, Brazil
| | - Juliana Moutinho Polatto
- Laboratório de Bacteriologia, Instituto Butantan, Av. Vital Brazil, 1500, São Paulo 05503-900, SP, Brazil
| | - Miriam Aparecida da Silva
- Laboratório de Bacteriologia, Instituto Butantan, Av. Vital Brazil, 1500, São Paulo 05503-900, SP, Brazil
| | - Joyce Araújo de Oliveira
- Laboratório de Bacteriologia, Instituto Butantan, Av. Vital Brazil, 1500, São Paulo 05503-900, SP, Brazil
| | - Thais Mitsunari
- Laboratório de Bacteriologia, Instituto Butantan, Av. Vital Brazil, 1500, São Paulo 05503-900, SP, Brazil
| | - Lennon Ramos Pereira
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil
| | - Robert Andreata-Santos
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil
| | - Luís Carlos de Souza Ferreira
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil
- Plataforma Científica Pasteur USP, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil
| | - Daniela Luz
- Laboratório de Bacteriologia, Instituto Butantan, Av. Vital Brazil, 1500, São Paulo 05503-900, SP, Brazil
- Correspondence: (C.R.P.); (D.L.); (R.M.F.P.); Tel.: +55-11-3068-2886 (C.R.P.); +55-11-2627-9708 (D.L.); +55-11-2627-9724 (R.M.F.P.)
| | - Roxane Maria Fontes Piazza
- Laboratório de Bacteriologia, Instituto Butantan, Av. Vital Brazil, 1500, São Paulo 05503-900, SP, Brazil
- Correspondence: (C.R.P.); (D.L.); (R.M.F.P.); Tel.: +55-11-3068-2886 (C.R.P.); +55-11-2627-9708 (D.L.); +55-11-2627-9724 (R.M.F.P.)
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Saivish MV, Menezes GDL, da Costa VG, da Silva GCD, Marques RE, Nogueira ML, Silva RAD. Predicting Antigenic Peptides from Rocio Virus NS1 Protein for Immunodiagnostic Testing Using Immunoinformatics and Molecular Dynamics Simulation. Int J Mol Sci 2022; 23:7681. [PMID: 35887029 PMCID: PMC9322101 DOI: 10.3390/ijms23147681] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/02/2022] [Accepted: 07/06/2022] [Indexed: 12/10/2022] Open
Abstract
The mosquito-borne disease caused by the Rocio virus is a neglected threat, and new immune inputs for serological testing are urgently required for diagnosis in low-resource settings and epidemiological surveillance. We used in silico approaches to identify a specific antigenic peptide (p_ROCV2) in the NS1 protein of the Rocio virus that was theoretically predicted to be stable and exposed on its surface, where it demonstrated key properties allowing it to interact with antibodies. These findings related to the molecular dynamics of this peptide provide important insights for advancing diagnostic platforms and investigating therapeutic alternatives.
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Affiliation(s)
- Marielena Vogel Saivish
- Departamento de Doenças Dermatológicas, Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto (FAMERP), São José do Rio Preto 15090-000, SP, Brazil; (M.V.S.); (G.C.D.d.S.)
- Laboratório Nacional de Biociências, Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas 13083-100, SP, Brazil;
| | - Gabriela de Lima Menezes
- Núcleo Colaborativo de Biosistemas, Universidade Federal de Jataí, Jataí 75801-615, GO, Brazil;
- Bioinformatics Multidisciplinary Environment, Programa de Pós Graduação em Bioinformática, Universidade Federal do Rio Grande do Norte, Natal 59078-400, RN, Brazil
| | - Vivaldo Gomes da Costa
- Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista (UNESP), São José do Rio Preto 15054-000, SP, Brazil;
| | - Gislaine Celestino Dutra da Silva
- Departamento de Doenças Dermatológicas, Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto (FAMERP), São José do Rio Preto 15090-000, SP, Brazil; (M.V.S.); (G.C.D.d.S.)
| | - Rafael Elias Marques
- Laboratório Nacional de Biociências, Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas 13083-100, SP, Brazil;
| | - Maurício Lacerda Nogueira
- Departamento de Doenças Dermatológicas, Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto (FAMERP), São José do Rio Preto 15090-000, SP, Brazil; (M.V.S.); (G.C.D.d.S.)
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Fumagalli MJ, Figueiredo LTM, Aquino VH. Linear and Continuous Flavivirus Epitopes From Naturally Infected Humans. Front Cell Infect Microbiol 2021; 11:710551. [PMID: 34458161 PMCID: PMC8387565 DOI: 10.3389/fcimb.2021.710551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 07/15/2021] [Indexed: 12/27/2022] Open
Abstract
This manuscript is an up-to-date review of experimentally validated linear and continuous epitopes identified from arbovirus members of the Flavivirus genus. We summarized 153 immunoreactive peptides from the Dengue virus, Zika virus, Japanese encephalitis virus, West Nile virus, and tick-borne encephalitis virus described in studies published from 1989 to 2020. We included peptides from structural (envelope, capsid, and pre-membrane) and nonstructural (Ns1–5) viral proteins that demonstrated relevant immunoreactivity with antibodies from naturally infected or vaccinated humans. We included peptides that demonstrated relevant reactivity features, such as indicators of disease severity related to immunological or immunopathological outcomes, differential or group diagnostic markers, immunotherapy candidates, and potential for vaccine formulation. The majority of immunoreactive peptides were described for DENV probably due to its long-lasting impact on human health and the lack of efficient vaccines and therapeutic methods. Immune landscape data regarding linear immunoreactive and continuous flavivirus peptides are still scarce, and a complete and more detailed map remains to be elucidated. Therefore, this review provides valuable data for those investigating the antibody response against flavivirus infection.
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Affiliation(s)
- Marcilio Jorge Fumagalli
- Virology Research Center, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | | | - Victor Hugo Aquino
- Laboratory of Virology, Department of Clinical Analyses, Toxicology and Food Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
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Carpio KL, Barrett ADT. Flavivirus NS1 and Its Potential in Vaccine Development. Vaccines (Basel) 2021; 9:622. [PMID: 34207516 PMCID: PMC8229460 DOI: 10.3390/vaccines9060622] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 12/19/2022] Open
Abstract
The Flavivirus genus contains many important human pathogens, including dengue, Japanese encephalitis (JE), tick-borne encephalitis (TBE), West Nile (WN), yellow fever (YF) and Zika (ZIK) viruses. While there are effective vaccines for a few flavivirus diseases (JE, TBE and YF), the majority do not have vaccines, including WN and ZIK. The flavivirus nonstructural 1 (NS1) protein has an unusual structure-function because it is glycosylated and forms different structures to facilitate different roles intracellularly and extracellularly, including roles in the replication complex, assisting in virus assembly, and complement antagonism. It also plays a role in protective immunity through antibody-mediated cellular cytotoxicity, and anti-NS1 antibodies elicit passive protection in animal models against a virus challenge. Historically, NS1 has been used as a diagnostic marker for the flavivirus infection due to its complement fixing properties and specificity. Its role in disease pathogenesis, and the strong humoral immune response resulting from infection, makes NS1 an excellent target for inclusion in candidate flavivirus vaccines.
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Affiliation(s)
- Kassandra L. Carpio
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA;
| | - Alan D. T. Barrett
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
- Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, TX 77555, USA
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Wang T, Zhan Y, Wu D, Chen Z, Wu W, Deng Y, Wang W, Tan W, Tang S. Development and Evaluation of a Universal and Supersensitive NS1-Based Luciferase Immunosorbent Assay to Detect Zika Virus-Specific IgG. Virol Sin 2019; 35:93-102. [PMID: 31552611 DOI: 10.1007/s12250-019-00160-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 07/26/2019] [Indexed: 10/26/2022] Open
Abstract
Zika virus (ZIKV) causes rash, moderate fever, conjunctivitis, and arthralgia, and has serious connection with neurological complications; therefore, it is a major threat to public health. A rapid and supersensitive method for detecting anti-ZIKV antibodies in humans and animals is thus urgently required. Here, we report an NS1-based luciferase immunosorbent assay (LISA), developed to detect ZIKV-specific IgG. Fusion proteins including a reporter Nano-luciferase (NLuc) and various fragments of ZIKV NS1 protein were expressed in 293 T cells. LISA was performed using the above cell lysates containing the expressed fusion proteins. Sample panels of humans and animals infected with ZIKV were examined for sensitivity of LISA, relative to those of ZIKV RT-PCR, commercial NS1-based ELISA, and micro-neutralization (MN) assays. Specificity and potential cross-reactivity were also evaluated using various convalescent serum samples derived from patients infected with dengue virus (DENV), Japanese encephalitis virus (JEV), and hepatitis C virus (HCV). Results indicated the optimal antigenic domain for anti-ZIKV IgG detection was located within 172-352 amino acids (aa) of ZIKV NS1 protein. NS1-based LISA performs better than commercial ELISA in anti-ZIKV IgG detection. LISA was shown to be at least fourfold more sensitive than commercial ELISA, and could detect anti-ZIKV IgG in various animal hosts without the need of species-specific labeled antibody. This novel assay is potentially useful for the rapid and sensitive detection of anti-ZIKV IgG in human and animal samples.
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Affiliation(s)
- Tianyu Wang
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Epidemiology, School of Public Health, Southern Medical University, Guangzhou, 510515, China.,NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 102206, China
| | - Ying Zhan
- NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 102206, China
| | - De Wu
- Key Laboratory for Repository and Application of Pathogenic Microbiology, Research Center for Pathogens Detection Technology of Emerging Infectious Diseases, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, 511430, China
| | - Zhihai Chen
- The National Clinical Key Department of Infectious Disease, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China
| | - Wei Wu
- NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 102206, China
| | - Yao Deng
- NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 102206, China
| | - Wenling Wang
- NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 102206, China
| | - Wenjie Tan
- NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 102206, China.
| | - Shixing Tang
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Epidemiology, School of Public Health, Southern Medical University, Guangzhou, 510515, China.
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Amrun SN, Yee W, Abu Bakar F, Lee B, Kam Y, Lum F, Tan JJL, Lim VWX, Watthanaworawit W, Ling C, Nosten F, Renia L, Leo Y, Ng LFP. Novel differential linear B-cell epitopes to identify Zika and dengue virus infections in patients. Clin Transl Immunology 2019; 8:e1066. [PMID: 31372218 PMCID: PMC6659153 DOI: 10.1002/cti2.1066] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 06/09/2019] [Accepted: 06/09/2019] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVES Recent Zika virus (ZIKV) outbreaks challenged existing laboratory diagnostic standards, especially for serology-based methods. Because of the genetic and structural similarity of ZIKV with other flaviviruses, this results in cross-reactive antibodies, which confounds serological interpretations. METHODS Plasma from Singapore ZIKV patients was screened longitudinally for antibody responses and neutralising capacities against ZIKV. Samples from healthy controls, ZIKV patients and DENV patients were further assessed using ZIKV and DENV peptides of precursor membrane (prM), envelope (E) or non-structural 1 (NS1) viral proteins in a peptide-based ELISA for epitope identification. Identified epitopes were re-validated and diagnostically evaluated using sera of patients with DENV, bacteria or unknown infections from Thailand. RESULTS Long-lasting ZIKV-neutralising antibodies were elicited during ZIKV infection. Thirteen potential linear B-cell epitopes were identified, and of these, four common flavivirus, three ZIKV-specific and one DENV-specific differential epitopes had more than 50% sensitivity and specificity. Notably, ZIKV-specific peptide 26 on domain I/II of E protein (amino acid residues 271-288) presented 80% sensitivity and 85.7% specificity. Importantly, the differential epitopes also showed significance in differentiating non-flavivirus patient samples. CONCLUSION Linear B-cell epitope candidates to differentiate between ZIKV and DENV infections were identified, providing the first step towards the design of a much-needed serology-based assay.
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Affiliation(s)
- Siti Naqiah Amrun
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore CitySingapore
| | - Wearn‐Xin Yee
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore CitySingapore
| | - Farhana Abu Bakar
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore CitySingapore
| | - Bernett Lee
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore CitySingapore
| | - Yiu‐Wing Kam
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore CitySingapore
| | - Fok‐Moon Lum
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore CitySingapore
| | - Jeslin JL Tan
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore CitySingapore
| | - Vanessa WX Lim
- Communicable Diseases CentreInstitute of Infectious Diseases and EpidemiologyTan Tock Seng HospitalSingapore CitySingapore
| | - Wanitda Watthanaworawit
- Shoklo Malaria Research UnitMahidol‐Oxford Tropical Medicine Research UnitFaculty of Tropical MedicineMahidol UniversityMae SotThailand
| | - Clare Ling
- Shoklo Malaria Research UnitMahidol‐Oxford Tropical Medicine Research UnitFaculty of Tropical MedicineMahidol UniversityMae SotThailand
| | - Francois Nosten
- Shoklo Malaria Research UnitMahidol‐Oxford Tropical Medicine Research UnitFaculty of Tropical MedicineMahidol UniversityMae SotThailand
- Centre for Tropical Medicine and Global HealthNuffield Department of MedicineUniversity of OxfordOxfordUK
| | - Laurent Renia
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore CitySingapore
| | - Yee‐Sin Leo
- Communicable Diseases CentreInstitute of Infectious Diseases and EpidemiologyTan Tock Seng HospitalSingapore CitySingapore
- Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore CitySingapore
- Saw Swee Hock School of Public HealthNational University of SingaporeSingapore CitySingapore
| | - Lisa FP Ng
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore CitySingapore
- National Institute of Health ResearchHealth Protection Research Unit in Emerging and Zoonotic InfectionsLiverpoolUK
- Institute of Infection and Global HealthUniversity of LiverpoolLiverpoolUK
- Department of BiochemistryYong Loo Lin School of MedicineNational University of SingaporeSingapore CitySingapore
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