1
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Sarri CA, Papadopoulos GE, Mamuris Z. West Nile virus-associated HLA-DRB1 alleles in the Greek population: A structural perspective. Microbiol Immunol 2023; 67:154-159. [PMID: 36578106 DOI: 10.1111/1348-0421.13048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 07/10/2022] [Accepted: 12/19/2022] [Indexed: 12/30/2022]
Abstract
The HLA system plays a significant role via the regulation of the immune system and contributes to the progression and protection of many diseases. In our previous study, several HLA-DRB1 alleles were found to have a susceptible or protective role toward infection and neuroinvasion of West Nile Virus (WNV) in the Greek population. As expected, the majority of polymorphic positions are located in the peptide-binding region of the molecule. In the present work, the structure of these alleles was studied in silico, to examine the effect of polymorphism on the conformation of DRB1 proteins, with the aspect of WNV association. More specifically, molecular dynamics simulations were used for structural prediction of 23 available alleles. These modeled alleles were evaluated using root-mean-square deviation (RMSD) and root-mean-square fluctuation analysis. Low RMSD values indicate that different alleles have similar structures. Furthermore, low fluctuation was observed in the peptide-binding region between alleles with the higher and the lowest RMSD values. These findings indicate that probably variable residues do not affect the behavior of DRB1 alleles in WNV disease, by causing structural differences between them.
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Affiliation(s)
- Constantina A Sarri
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | | | - Zissis Mamuris
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
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2
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Ferraris P, Wichit S, Cordel N, Missé D. Human host genetics and susceptibility to ZIKV infection. INFECTION GENETICS AND EVOLUTION 2021; 95:105066. [PMID: 34487865 DOI: 10.1016/j.meegid.2021.105066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 08/29/2021] [Accepted: 09/01/2021] [Indexed: 12/26/2022]
Abstract
Managing emerging infectious diseases is a current challenge in the fields of microbiology and epidemiology. Indeed, among other environmental and human-related factors, climate change and global warming favor the emergence of new pathogens. The recent Zika virus (ZIKV) epidemic, of which the large and rapid spread surprised the scientific community, is a reminder of the importance to study viruses currently responsible for sporadic infections. Increasing our knowledge of key factors involved in emerging infections is essential to implement specific monitoring that can be oriented according to the pathogen, targeted population, or at-risk environment. Recent technological developments, such as high-throughput sequencing, genome-wide association studies and CRISPR screenings have allowed the identification of human single nucleotide polymorphisms (SNPs) involved in infectious disease outcome. This review focuses on the human genetic host factors that have been identified and shown to be associated with the pathogenesis of ZIKV infection and candidate SNP targets.
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Affiliation(s)
- Pauline Ferraris
- MIVEGEC, Univ. Montpellier, IRD, CNRS, 34394 Montpellier, France.
| | - Sineewanlaya Wichit
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Nadège Cordel
- Guadeloupe University Hospital, Department of Dermatology and Clinical Immunology, Pointe-à-Pitre, Guadeloupe and Normandie University, UNIROUEN, IRIB, Inserm, U1234, Rouen, France
| | - Dorothée Missé
- MIVEGEC, Univ. Montpellier, IRD, CNRS, 34394 Montpellier, France
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3
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Sonon P, Brito Ferreira ML, Santos Almeida R, Saloum Deghaide NH, Henrique Willcox G, Guimarães EL, da Purificação Júnior AF, Cordeiro MT, Antunes de Brito CA, de Albuquerque MDFM, Lins RD, Donadi EA, Lucena-Silva N. Differential Frequencies of HLA-DRB1, DQA1, and DQB1 Alleles and Haplotypes Are Observed in the Arbovirus-Related Neurological Syndromes. J Infect Dis 2021; 224:517-525. [PMID: 33320259 DOI: 10.1093/infdis/jiaa764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 12/11/2020] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND We took advantage of the 2015-2016 Brazilian arbovirus outbreak (Zika [ZIKV]/dengue/chikungunya viruses) associated with neurological complications to type HLA-DRB1/DQA1/DQB1 variants in patients exhibiting neurological complications and in bone marrow donors from the same endemic geographical region. METHODS DRB1/DQA1/DQB1 loci were typed using sequence-specific oligonucleotides. In silico studies were performed using X-ray resolved dimer constructions. RESULTS The DQA1*01, DQA1*05, DQB1*02, or DQB1*06 genotypes/haplotypes and DQA1/DQB1 haplotypes that encode the putative DQA1/DQB1 dimers were overrepresented in the whole group of patients and in patients exhibiting peripheral neurological spectrum disorders (PSD) or encephalitis spectrum disorders (ESD). The DRB1*04, DRB1*13, and DQA1*03 allele groups protected against arbovirus neurological manifestation, being underrepresented in whole group of patients and ESD and PSD groups. Genetic and in silico studies revealed that DQA1/DQB1 dimers (1) were primarily associated with susceptibility to arbovirus infections; (2) can bind to a broad range of ZIKV peptides (235 of 1878 peptides, primarily prM and NS2A); and (3) exhibited hydrophilic and highly positively charged grooves when compared to the DRA1/DRB1 cleft. The protective dimer (DRA1/DRB1*04) bound a limited number of ZIKV peptides (40 of 1878 peptides, primarily prM). CONCLUSION Protective haplotypes may recognize arbovirus peptides more specifically than susceptible haplotypes.
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Affiliation(s)
- Paulin Sonon
- Immunology Department, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Recife, Pernambuco, Brazil
| | | | - Renata Santos Almeida
- Immunology Department, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Recife, Pernambuco, Brazil
| | | | | | | | | | - Marli Tenório Cordeiro
- Virology Department, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Recife, Pernambuco, Brazil
| | | | | | - Roberto D Lins
- Virology Department, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Recife, Pernambuco, Brazil
| | - Eduardo A Donadi
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Sao Paulo, Brazil
| | - Norma Lucena-Silva
- Immunology Department, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Recife, Pernambuco, Brazil
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4
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Naemi FMA, Al-Adwani S, Al-Khatabi H, Al-Nazawi A. Association between the HLA genotype and the severity of COVID-19 infection among South Asians. J Med Virol 2021; 93:4430-4437. [PMID: 33830530 PMCID: PMC8251353 DOI: 10.1002/jmv.27003] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/04/2021] [Accepted: 04/06/2021] [Indexed: 12/21/2022]
Abstract
Regional variations are found in the incidence and severity of the COVID-19 infection. Human leukocyte antigen (HLA) polymorphism is one of the genetic factors that might have an impact on the outcome of the disease. This study explored the association between the HLA genotype and the severity of COVID-19 among patients from South Asia. Blood samples from 95 Asians (Bangladeshis, Indians, and Pakistanis) with COVID-19 were collected. The patients were divided according to the severity of their infection: mild (N = 64), severe (N = 31), and fatal (N = 20). DNA was extracted from all samples, and HLA genotyping was performed for both class I (A, B, and C) and class II (DRB1, DQA1, and DQB1) using the PCR-rSSO (polymerase chain reaction-reverse sequence-specific oligonucleotide) molecular method. The frequency of HLA-B*51 was significantly higher among patients in the fatal group than among those in the mild infection group (15% vs. 4.7%, p = 0.027). Additionally, the frequency of HLA-B*35 was significantly higher in the mild infection group than in the fatal group (21.1% vs. 7.5%, p = 0.050 [a borderline p-value]). In terms of HLA class II, DRB1*13 was significantly observed in the fatal group than in the mild infection group (17.5% vs. 11.3%, p = 0.049). However, the p-value for all alleles became insignificant after a statistical correction for the p-values (pc = 0.216, pc = 0.4, and pc = 0.49, respectively). Compared with all published data, this study highlights that the association between the HLA system and the COVID-19 outcome might be ethnic-dependent. Genetic variation between populations must be examined on a wider scale to assess infection prognosis and vaccine effectiveness.
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Affiliation(s)
- Fatmah M A Naemi
- Laboratory of Histocompatibility and Immunogenetics, King Fahd General Hospital, Ministry of Health, Jeddah, Kingdom of Saudi Arabia
| | - Shurooq Al-Adwani
- Laboratory of Histocompatibility and Immunogenetics, King Fahd General Hospital, Ministry of Health, Jeddah, Kingdom of Saudi Arabia
| | - Heba Al-Khatabi
- Center of Excellence in Genomic Medicine Research, King Fahd Medical Research Center, King Abdul-Aziz University, Jeddah, Kingdom of Saudi Arabia
| | - Ashwaq Al-Nazawi
- Public Health VBD, Ministry of Health, Jeddah, Kingdom of Saudi Arabia
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5
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West Nile Virus Vaccine Design by T Cell Epitope Selection: In Silico Analysis of Conservation, Functional Cross-Reactivity with the Human Genome, and Population Coverage. J Immunol Res 2020; 2020:7235742. [PMID: 32258174 PMCID: PMC7106935 DOI: 10.1155/2020/7235742] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Accepted: 12/05/2019] [Indexed: 12/22/2022] Open
Abstract
West Nile Virus (WNV) causes a debilitating and life-threatening neurological disease in humans. Since its emergence in Africa 50 years ago, new strains of WNV and an expanding geographical distribution have increased public health concerns. There are no licensed therapeutics against WNV, limiting effective infection control. Vaccines represent the most efficacious and efficient medical intervention known. Epitope-based vaccines against WNV remain significantly underexploited. Here, we use a selection protocol to identify a set of conserved prevalidated immunogenic T cell epitopes comprising a putative WNV vaccine. Experimentally validated immunogenic WNV epitopes and WNV sequences were retrieved from the IEDB and West Nile Virus Variation Database. Clustering and multiple sequence alignment identified a smaller subset of representative sequences. Protein variability analysis identified evolutionarily conserved sequences, which were used to select a diverse set of immunogenic candidate T cell epitopes. Cross-reactivity and human leukocyte antigen-binding affinities were assessed to eliminate unsuitable epitope candidates. Population protection coverage (PPC) quantified individual epitopes and epitope combinations against the world population. 3 CD8+ T cell epitopes (ITYTDVLRY, TLARGFPFV, and SYHDRRWCF) and 1 CD4+ epitope (VTVNPFVSVATANAKVLI) were selected as a putative WNV vaccine, with an estimated PPC of 97.14%.
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6
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Koblischke M, Spitzer FS, Florian DM, Aberle SW, Malafa S, Fae I, Cassaniti I, Jungbauer C, Knapp B, Laferl H, Fischer G, Baldanti F, Stiasny K, Heinz FX, Aberle JH. CD4 T Cell Determinants in West Nile Virus Disease and Asymptomatic Infection. Front Immunol 2020; 11:16. [PMID: 32038660 PMCID: PMC6989424 DOI: 10.3389/fimmu.2020.00016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 01/07/2020] [Indexed: 12/30/2022] Open
Abstract
West Nile (WN) virus infection of humans is frequently asymptomatic, but can also lead to WN fever or neuroinvasive disease. CD4 T cells and B cells are critical in the defense against WN virus, and neutralizing antibodies, which are directed against the viral glycoprotein E, are an accepted correlate of protection. For the efficient production of these antibodies, B cells interact directly with CD4 helper T cells that recognize peptides from E or the two other structural proteins (capsid-C and membrane-prM/M) of the virus. However, the specific protein sites yielding such helper epitopes remain unknown. Here, we explored the CD4 T cell response in humans after WN virus infection using a comprehensive library of overlapping peptides covering all three structural proteins. By measuring T cell responses in 29 individuals with either WN virus disease or asymptomatic infection, we showed that CD4 T cells focus on peptides in specific structural elements of C and at the exposed surface of the pre- and postfusion forms of the E protein. Our data indicate that these immunodominant epitopes are recognized in the context of multiple different HLA molecules. Furthermore, we observed that immunodominant antigen regions are structurally conserved and similarly targeted in other mosquito-borne flaviviruses, including dengue, yellow fever, and Zika viruses. Together, these findings indicate a strong impact of virion protein structure on epitope selection and antigenicity, which is an important issue to consider in future vaccine design.
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Affiliation(s)
| | | | - David M Florian
- Center for Virology, Medical University of Vienna, Vienna, Austria
| | - Stephan W Aberle
- Center for Virology, Medical University of Vienna, Vienna, Austria
| | - Stefan Malafa
- Center for Virology, Medical University of Vienna, Vienna, Austria
| | - Ingrid Fae
- Department of Blood Group Serology and Transfusion Medicine, Medical University of Vienna, Vienna, Austria
| | - Irene Cassaniti
- Molecular Virology Unit, Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.,Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
| | - Christof Jungbauer
- Blood Service for Vienna, Lower Austria and Burgenland, Austrian Red Cross, Vienna, Austria
| | | | - Hermann Laferl
- Sozialmedizinisches Zentrum Süd, Kaiser-Franz-Josef-Spital, Vienna, Austria
| | - Gottfried Fischer
- Department of Blood Group Serology and Transfusion Medicine, Medical University of Vienna, Vienna, Austria
| | - Fausto Baldanti
- Molecular Virology Unit, Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.,Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
| | - Karin Stiasny
- Center for Virology, Medical University of Vienna, Vienna, Austria
| | - Franz X Heinz
- Center for Virology, Medical University of Vienna, Vienna, Austria
| | - Judith H Aberle
- Center for Virology, Medical University of Vienna, Vienna, Austria
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7
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Stejskalova K, Janova E, Horecky C, Horecka E, Vaclavek P, Hubalek Z, Relling K, Cvanova M, D'Amico G, Mihalca AD, Modry D, Knoll A, Horin P. Associations between the presence of specific antibodies to the West Nile Virus infection and candidate genes in Romanian horses from the Danube delta. Mol Biol Rep 2019; 46:4453-4461. [PMID: 31175514 DOI: 10.1007/s11033-019-04900-w] [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: 03/06/2019] [Accepted: 05/29/2019] [Indexed: 01/09/2023]
Abstract
The West Nile virus (WNV) is a mosquito-borne flavivirus causing meningoencephalitis in humans and animals. Due to their particular susceptibility to WNV infection, horses serve as a sentinel species. In a population of Romanian semi-feral horses living in the Danube delta region, we have analyzed the distribution of candidate polymorphic genetic markers between anti WNV-IgG seropositive and seronegative horses. Thirty-six SNPs located in 28 immunity-related genes and 26 microsatellites located in the MHC and LY49 complex genomic regions were genotyped in 57 seropositive and 32 seronegative horses. The most significant association (pcorr < 0.0002) was found for genotypes composed of markers of the SLC11A1 and TLR4 genes. Markers of five other candidate genes (ADAM17, CXCR3, IL12A, MAVS, TNFA), along with 5 MHC class I and LY49-linked microsatellites were also associated with the WNV antibody status in this model horse population. The OAS1 gene, previously associated with WNV-induced clinical disease, was not associated with the presence of anti-WNV antibodies.
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Affiliation(s)
- K Stejskalova
- Department of Animal Genetics, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, Palackeho 1, 61242, Brno, Czech Republic
| | - E Janova
- Department of Animal Genetics, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, Palackeho 1, 61242, Brno, Czech Republic.,CEITEC-VFU, University of Veterinary and Pharmaceutical Sciences, Palackeho 1, 61242, Brno, Czech Republic
| | - C Horecky
- Department of Animal Morphology, Physiology and Genetics, Faculty of Agronomy, Mendel University in Brno, Zemědělská 1/1665, 613 00, Brno, Czech Republic.,CEITEC-MENDELU, Mendel University in Brno, Zemědělská 1/1665, 613 00, Brno, Czech Republic
| | - E Horecka
- Department of Animal Morphology, Physiology and Genetics, Faculty of Agronomy, Mendel University in Brno, Zemědělská 1/1665, 613 00, Brno, Czech Republic.,CEITEC-MENDELU, Mendel University in Brno, Zemědělská 1/1665, 613 00, Brno, Czech Republic
| | - P Vaclavek
- SVU Jihlava, Rantirovska 93/20, Horni Kosov, 58601, Jihlava, Czech Republic
| | - Z Hubalek
- Institute of Vertebrate Biology of the Academy of Sciences, Květná 8, 60365, Brno, Czech Republic
| | - K Relling
- Department of Pathology and Parasitology, University of Veterinary and Pharmaceutical Sciences, Palackeho tr. 1, 612 42, Brno, Czech Republic
| | - M Cvanova
- Faculty of Medicine, Institute of Biostatistics and Analyses, Masaryk University, Kamenice 753/5, 625 00, Brno, Czech Republic
| | - G D'Amico
- Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăştur 3-5, 400362, Cluj-Napoca, Romania
| | - A D Mihalca
- Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăştur 3-5, 400362, Cluj-Napoca, Romania
| | - D Modry
- CEITEC-VFU, University of Veterinary and Pharmaceutical Sciences, Palackeho 1, 61242, Brno, Czech Republic.,Department of Pathology and Parasitology, University of Veterinary and Pharmaceutical Sciences, Palackeho tr. 1, 612 42, Brno, Czech Republic.,Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, České Budějovice, 370 05, Czech Republic
| | - A Knoll
- Department of Animal Morphology, Physiology and Genetics, Faculty of Agronomy, Mendel University in Brno, Zemědělská 1/1665, 613 00, Brno, Czech Republic.,CEITEC-MENDELU, Mendel University in Brno, Zemědělská 1/1665, 613 00, Brno, Czech Republic
| | - P Horin
- Department of Animal Genetics, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, Palackeho 1, 61242, Brno, Czech Republic. .,CEITEC-VFU, University of Veterinary and Pharmaceutical Sciences, Palackeho 1, 61242, Brno, Czech Republic.
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8
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Genetic susceptibility to West Nile virus infection in Camargue horses. Res Vet Sci 2019; 124:284-292. [PMID: 31005660 DOI: 10.1016/j.rvsc.2019.04.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 03/04/2019] [Accepted: 04/07/2019] [Indexed: 11/21/2022]
Abstract
West Nile virus (WNV) is a mosquito-borne zoonotic neurotropic virus capable to cause lethal meningoencephalitis (WNE) in infected hosts such as birds, horses, and humans. Due to their sensitivity, horses serve as sentinel species in areas at risk. We studied a population of Camargue horses living in Southern France in two zones with endemic WNV circulation where WNV outbreaks were recorded in 2000 and 2003-4. Two sets of microsatellite markers located in MHC and Ly49 genomic regions were genotyped as well as multiple SNPs in ten immunity-related candidate gene regions. Associations between genetic polymorphisms and resistance/susceptibility to WNE were tested. While single marker associations were weak, compound two-gene genotypes of SNPs located within the MAVS, NCR2 and IL-10 genes and microsatellites HMS082 and CZM013 were associated with susceptibility to WNE. Combinations of microsatellite markers CZM009, ABGe17402 and ABGe9019 were associated with simple seroconversion without clinical signs of WNE (resistance). In addition, a distribution of polymorphic markers between WNV-IgG seropositive horses and a control group of WNV-IgG seronegative horses was tested. One SNP in the OAS1 gene (NC_009151.3:g.21961328A>G) was significantly associated with the seropositive phenotype (pcorr = 0.023; OR = 40.5 CI (4.28; 383.26); RR = 8.18 CI (1.27; 52.89) in the Camargue breed. In compound genotypes, SNP markers for SLC11A1, MAVS, OAS1, TLR4, ADAM17 and NCR2 genes and ten microsatellites showed non-random distribution between seropositive and seronegative groups of horses. Further analysis of associated markers could contribute to our understanding of anti-WNV defense mechanisms in horses.
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Genetic Determinants of the Re-Emergence of Arboviral Diseases. Viruses 2019; 11:v11020150. [PMID: 30759739 PMCID: PMC6410223 DOI: 10.3390/v11020150] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 02/03/2019] [Accepted: 02/06/2019] [Indexed: 01/06/2023] Open
Abstract
Mosquito-borne diseases constitute a large portion of infectious diseases, causing more than 700,000 deaths annually. Mosquito-transmitted viruses, such as yellow fever, dengue, West Nile, chikungunya, and Zika viruses, have re-emerged recently and remain a public health threat worldwide. Global climate change, rapid urbanization, burgeoning international travel, expansion of mosquito populations, vector competence, and host and viral genetics may all together contribute to the re-emergence of arboviruses. In this brief review, we summarize the host and viral genetic determinants that may enhance infectivity in the host, viral fitness in mosquitoes and viral transmission by mosquitoes.
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10
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Sarri CA, Papadopoulos GE, Papa A, Tsakris A, Pervanidou D, Baka A, Politis C, Billinis C, Hadjichristodoulou C, Mamuris Z. Amino acid signatures in the HLA class II peptide-binding region associated with protection/susceptibility to the severe West Nile Virus disease. PLoS One 2018; 13:e0205557. [PMID: 30379846 PMCID: PMC6209194 DOI: 10.1371/journal.pone.0205557] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 09/27/2018] [Indexed: 12/23/2022] Open
Abstract
The MHC class II region in humans is highly polymorphic. Each MHC molecule is formed by an α and a β chain, produced by different genes, creating an antigen-binding groove. In the groove there are several pockets into which antigens anchor and fit. The affinity of this fitting determines the recognition specificity of a given peptide. Here, based on our previous results about the association of MHC class II with the WNV disease, we examined the role of the binding pockets of HLA-DPA1, -DQA1 and-DRB1 in the severe form of the disease. In HLA-DQA1, variants in all pockets 1, 6 and 9 were found to be associated with either protection and/or susceptibility to neuroinvasion caused by WNV. Similarly, pockets 7, 9 and 10 in HLA-DRB1 were associated with severe disease. Protein modeling of these molecules revealed structural and functional differences among alleles with opposite roles concerning the development of the disease. Different amino acids in positions α52 and α66 (HLA-DQA1) significantly influenced the peptide binding while DYWLR/EFA combination (HLA-DRB1) was associated with neuronal damage. Further studies could help us understand the selectivity of pocket variants in order to create suitable peptides for an effective response.
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Affiliation(s)
- Constantina A. Sarri
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | | | - Anna Papa
- 1st Microbiological Laboratory, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Athanasios Tsakris
- Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Danai Pervanidou
- Hellenic Centre for Disease Control and Prevention (HCDCP), Athens, Greece
| | - Agoritsa Baka
- Hellenic Centre for Disease Control and Prevention (HCDCP), Athens, Greece
| | | | | | | | - Zissis Mamuris
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
- * E-mail:
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11
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Manet C, Roth C, Tawfik A, Cantaert T, Sakuntabhai A, Montagutelli X. Host genetic control of mosquito-borne Flavivirus infections. Mamm Genome 2018; 29:384-407. [PMID: 30167843 PMCID: PMC7614898 DOI: 10.1007/s00335-018-9775-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 08/20/2018] [Indexed: 12/12/2022]
Abstract
Flaviviruses are arthropod-borne viruses, several of which represent emerging or re-emerging pathogens responsible for widespread infections with consequences ranging from asymptomatic seroconversion to severe clinical diseases and congenital developmental deficits. This variability is due to multiple factors including host genetic determinants, the role of which has been investigated in mouse models and human genetic studies. In this review, we provide an overview of the host genes and variants which modify susceptibility or resistance to major mosquito-borne flaviviruses infections in mice and humans.
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Affiliation(s)
- Caroline Manet
- Mouse Genetics Laboratory, Department of Genomes and Genetics, Institut Pasteur, Paris, France
| | - Claude Roth
- Functional Genetics of Infectious Diseases Unit, Department of Genomes and Genetics, Institut Pasteur, Paris, France
- CNRS, UMR 2000-Génomique Evolutive, Modélisation et Santé, Institut Pasteur, 75015, Paris, France
| | - Ahmed Tawfik
- Functional Genetics of Infectious Diseases Unit, Department of Genomes and Genetics, Institut Pasteur, Paris, France
- CNRS, UMR 2000-Génomique Evolutive, Modélisation et Santé, Institut Pasteur, 75015, Paris, France
| | - Tineke Cantaert
- Immunology Group, Institut Pasteur du Cambodge, International Network of Pasteur Institutes, Phnom Penh, 12201, Cambodia
| | - Anavaj Sakuntabhai
- Functional Genetics of Infectious Diseases Unit, Department of Genomes and Genetics, Institut Pasteur, Paris, France.
- CNRS, UMR 2000-Génomique Evolutive, Modélisation et Santé, Institut Pasteur, 75015, Paris, France.
| | - Xavier Montagutelli
- Mouse Genetics Laboratory, Department of Genomes and Genetics, Institut Pasteur, Paris, France.
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12
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Evolving Insights for MHC Class II Antigen Processing and Presentation in Health and Disease. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s40495-017-0097-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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