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Guerrero D, Lay S, Piv E, Chhin C, Leng S, Meng R, Mam KE, Pean P, Vantaux A, Boyer S, Missé D, Cantaert T. In-vitro assessment of cutaneous immune responses to aedes mosquito salivary gland extract and dengue virus in Cambodian individuals. OXFORD OPEN IMMUNOLOGY 2024; 5:iqae003. [PMID: 38737941 PMCID: PMC11035005 DOI: 10.1093/oxfimm/iqae003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 03/13/2024] [Accepted: 03/25/2024] [Indexed: 05/14/2024] Open
Abstract
Dengue virus (DENV) poses a global health threat, affecting millions individuals annually with no specific therapy and limited vaccines. Mosquitoes, mainly Aedes aegypti and Aedes albopictus worldwide, transmit DENV through their saliva during blood meals. In this study, we aimed to understand how Aedes mosquito saliva modulate skin immune responses during DENV infection in individuals living in mosquito-endemic regions. To accomplish this, we dissociated skin cells from Cambodian volunteers and incubated them with salivary gland extract (SGE) from three different mosquito strains: Ae. aegypti USDA strain, Ae. aegypti and Ae. albopictus wild type (WT) in the presence/absence of DENV. We observed notable alterations in skin immune cell phenotypes subsequent to exposure to Aedes salivary gland extract (SGE). Specifically, exposure lead to an increase in the frequency of macrophages expressing chemokine receptor CCR2, and neutrophils expressing CD69. Additionally, we noted a substantial increase in the percentage of macrophages that became infected with DENV in the presence of Aedes SGE. Differences in cellular responses were observed when Aedes SGE of three distinct mosquito strains were compared. Our findings deepen the understanding of mosquito saliva's role in DENV infection and skin immune responses in individuals regularly exposed to mosquito bites. This study provides insights into skin immune cell dynamics that could guide strategies to mitigate DENV transmission and other arbovirus diseases.
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Affiliation(s)
- David Guerrero
- Institut Pasteur du Cambodge, Immunology Unit, Pasteur Network, Phnom Penh 12201, Cambodia
| | - Sokchea Lay
- Institut Pasteur du Cambodge, Immunology Unit, Pasteur Network, Phnom Penh 12201, Cambodia
| | - Eakpor Piv
- Institut Pasteur du Cambodge, Malaria Unit, Pasteur Network, Phnom Penh 12201, Cambodia
| | - Chansophea Chhin
- Institut Pasteur du Cambodge, Malaria Unit, Pasteur Network, Phnom Penh 12201, Cambodia
| | - Sokkeang Leng
- Institut Pasteur du Cambodge, Medical and Veterinary Entomology Unit, Phnom Penh 12201, Cambodia
| | - Ratana Meng
- Institut Pasteur du Cambodge, Immunology Unit, Pasteur Network, Phnom Penh 12201, Cambodia
| | - Kim Eng Mam
- Crystal Esthetic Center, Phnom Penh 12201, Cambodia
| | - Polidy Pean
- Institut Pasteur du Cambodge, Immunology Unit, Pasteur Network, Phnom Penh 12201, Cambodia
| | - Amelie Vantaux
- Institut Pasteur du Cambodge, Malaria Unit, Pasteur Network, Phnom Penh 12201, Cambodia
| | - Sebastien Boyer
- Institut Pasteur du Cambodge, Medical and Veterinary Entomology Unit, Phnom Penh 12201, Cambodia
- Unité Ecologie et Emergence des Pathogènes Transmis par les Arthropodes, Institut Pasteur, Paris, France
| | - Dorothée Missé
- MIVEGEC, Univ. Montpellier, IRD, CNRS, 34000, Montpellier, France
| | - Tineke Cantaert
- Institut Pasteur du Cambodge, Immunology Unit, Pasteur Network, Phnom Penh 12201, Cambodia
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Miauton A, Audran R, Besson J, Maby-El Hajjami H, Karlen M, Warpelin-Decrausaz L, Sene L, Schaufelberger S, Faivre V, Faouzi M, Hartley MA, Spertini F, Genton B. Safety and immunogenicity of a synthetic nanoparticle-based, T cell priming peptide vaccine against dengue in healthy adults in Switzerland: a double-blind, randomized, vehicle-controlled, phase 1 study. EBioMedicine 2024; 99:104922. [PMID: 38128414 PMCID: PMC10776924 DOI: 10.1016/j.ebiom.2023.104922] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 11/23/2023] [Accepted: 12/01/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND Vaccines that minimize the risk of vaccine-induced antibody-dependent enhancement and severe dengue are needed to address the global health threat posed by dengue. This study assessed the safety and immunogenicity of a gold nanoparticle (GNP)-based, multi-valent, synthetic peptide dengue vaccine candidate (PepGNP-Dengue), designed to provide protective CD8+ T cell immunity, without inducing antibodies. METHODS In this randomized, double-blind, vehicle-controlled, phase 1 trial (NCT04935801), healthy naïve individuals aged 18-45 years recruited at the Centre for primary care and public health, Lausanne, Switzerland, were randomly assigned to receive PepGNP-Dengue or comparator (GNP without peptides [vehicle-GNP]). Randomization was stratified into four groups (low dose [LD] and high dose [HD]), allocation was double-blind from participants and investigators. Two doses were administered by intradermal microneedle injection 21 days apart. Primary outcome was safety, secondary outcome immunogenicity. Analysis was by intention-to-treat for safety, intention-to-treat and per protocol for immunogenicity. FINDINGS 26 participants were enrolled (August-September 2021) to receive PepGNP-Dengue (LD or HD, n = 10 each) or vehicle-GNP (LD or HD, n = 3 each). No vaccine-related serious adverse events occurred. Most (90%) related adverse events were mild; injection site pain and transient discoloration were most frequently reported. Injection site erythema occurred in 58% of participants. As expected, PepGNP-Dengue did not elicit anti-DENV antibodies of significance. Significant increases were observed in specific CD8+ T cells and dengue dextramer+ memory cell subsets in the LD PepGNP-Dengue but not in the HD PepGNP-Dengue or vehicle-GNP groups, specifically PepGNP-activated CD137+CD69+CD8+ T cells (day 90, +0.0318%, 95% CI: 0.0088-0.1723, p = 0.046), differentiated effector memory (TemRA) and central memory (Tcm) CD8+ T cells (day 35, +0.8/105 CD8+, 95% CI: 0.19-5.13, p = 0.014 and +1.34/105 CD8+, 95% CI: 0.1-7.34, p = 0.024, respectively). INTERPRETATION Results provide proof of concept that a synthetic nanoparticle-based peptide vaccine can successfully induce virus-specific CD8+ T cells. The favourable safety profile and cellular responses observed support further development of PepGNP-Dengue. FUNDING Emergex Vaccines Holding Limited.
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Affiliation(s)
- Alix Miauton
- Tropical, Travel and Vaccination Clinic, Centre for Primary Care and Public Health (Unisanté), Lausanne, Switzerland.
| | - Régine Audran
- Division of Immunology and Allergy, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - Juliette Besson
- Tropical, Travel and Vaccination Clinic, Centre for Primary Care and Public Health (Unisanté), Lausanne, Switzerland
| | - Hélène Maby-El Hajjami
- Clinical Trial Unit, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne, Lausanne, Switzerland
| | - Maxime Karlen
- Tropical, Travel and Vaccination Clinic, Centre for Primary Care and Public Health (Unisanté), Lausanne, Switzerland
| | - Loane Warpelin-Decrausaz
- Clinical Trial Unit, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne, Lausanne, Switzerland; Research Support Unit, Centre for Primary Care and Public Health (Unisanté), Lausanne, Switzerland
| | - Loredana Sene
- Clinical Trial Unit, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne, Lausanne, Switzerland
| | - Sylvain Schaufelberger
- Information Systems and Digital Transformation, Centre for Primary Care and Public Health (Unisanté), Lausanne, Switzerland
| | - Vincent Faivre
- Information Systems and Digital Transformation, Centre for Primary Care and Public Health (Unisanté), Lausanne, Switzerland
| | - Mohamed Faouzi
- Biostatistics Unit, Centre for Primary Care and Public Health (Unisanté), Lausanne, Switzerland
| | - Mary-Anne Hartley
- Tropical, Travel and Vaccination Clinic, Centre for Primary Care and Public Health (Unisanté), Lausanne, Switzerland
| | - François Spertini
- Division of Immunology and Allergy, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - Blaise Genton
- Tropical, Travel and Vaccination Clinic, Centre for Primary Care and Public Health (Unisanté), Lausanne, Switzerland
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Henriques P, Rosa A, Caldeira-Araújo H, Soares P, Vigário AM. Flying under the radar - impact and factors influencing asymptomatic DENV infections. Front Cell Infect Microbiol 2023; 13:1284651. [PMID: 38076464 PMCID: PMC10704250 DOI: 10.3389/fcimb.2023.1284651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 11/06/2023] [Indexed: 12/18/2023] Open
Abstract
The clinical outcome of DENV and other Flaviviruses infections represents a spectrum of severity that ranges from mild manifestations to severe disease, which can ultimately lead to death. Nonetheless, most of these infections result in an asymptomatic outcome that may play an important role in the persistent circulation of these viruses. Also, although little is known about the mechanisms that lead to these asymptomatic infections, they are likely the result of a complex interplay between viral and host factors. Specific characteristics of the infecting viral strain, such as its replicating efficiency, coupled with host factors, like gene expression of key molecules involved in the immune response or in the protection against disease, are among crucial factors to study. This review revisits recent data on factors that may contribute to the asymptomatic outcome of the world's widespread DENV, highlighting the importance of silent infections in the transmission of this pathogen and the immune status of the host.
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Affiliation(s)
- Paulo Henriques
- Projecto Medicina, Faculdade de Ciências da Vida, Universidade da Madeira, Funchal, Portugal
| | - Alexandra Rosa
- Projecto Medicina, Faculdade de Ciências da Vida, Universidade da Madeira, Funchal, Portugal
| | - Helena Caldeira-Araújo
- Projecto Medicina, Faculdade de Ciências da Vida, Universidade da Madeira, Funchal, Portugal
- CQM-Centro de Química da Madeira, Universidade da Madeira, Funchal, Portugal
| | - Pedro Soares
- Department of Biology, CBMA (Centre of Molecular and Environmental Biology), Braga, Portugal
- Department of Biology, Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| | - Ana Margarida Vigário
- Projecto Medicina, Faculdade de Ciências da Vida, Universidade da Madeira, Funchal, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
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4
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Sapiro AL, Hayes BM, Volk RF, Zhang JY, Brooks DM, Martyn C, Radkov A, Zhao Z, Kinnersley M, Secor PR, Zaro BW, Chou S. Longitudinal map of transcriptome changes in the Lyme pathogen Borrelia burgdorferi during tick-borne transmission. eLife 2023; 12:RP86636. [PMID: 37449477 PMCID: PMC10393048 DOI: 10.7554/elife.86636] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023] Open
Abstract
Borrelia burgdorferi (Bb), the causative agent of Lyme disease, adapts to vastly different environments as it cycles between tick vector and vertebrate host. During a tick bloodmeal, Bb alters its gene expression to prepare for vertebrate infection; however, the full range of transcriptional changes that occur over several days inside of the tick are technically challenging to capture. We developed an experimental approach to enrich Bb cells to longitudinally define their global transcriptomic landscape inside nymphal Ixodes scapularis ticks during a transmitting bloodmeal. We identified 192 Bb genes that substantially change expression over the course of the bloodmeal from 1 to 4 days after host attachment. The majority of upregulated genes encode proteins found at the cell envelope or proteins of unknown function, including 45 outer surface lipoproteins embedded in the unusual protein-rich coat of Bb. As these proteins may facilitate Bb interactions with the host, we utilized mass spectrometry to identify candidate tick proteins that physically associate with Bb. The Bb enrichment methodology along with the ex vivo Bb transcriptomes and candidate tick interacting proteins presented here provide a resource to facilitate investigations into key determinants of Bb priming and transmission during the tick stage of its unique transmission cycle.
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Affiliation(s)
- Anne L Sapiro
- Department of Biochemistry & Biophysics, University of California, San FranciscoSan FranciscoUnited States
| | - Beth M Hayes
- Department of Biochemistry & Biophysics, University of California, San FranciscoSan FranciscoUnited States
| | - Regan F Volk
- Department of Pharmaceutical Chemistry and Cardiovascular Research Institute, University of California, San FranciscoSan FranciscoUnited States
| | - Jenny Y Zhang
- Department of Biochemistry & Biophysics, University of California, San FranciscoSan FranciscoUnited States
| | - Diane M Brooks
- Division of Biological Sciences, University of MontanaMissoulaUnited States
| | - Calla Martyn
- Department of Biochemistry & Biophysics, University of California, San FranciscoSan FranciscoUnited States
| | - Atanas Radkov
- Department of Biochemistry & Biophysics, University of California, San FranciscoSan FranciscoUnited States
| | - Ziyi Zhao
- Department of Biochemistry & Biophysics, University of California, San FranciscoSan FranciscoUnited States
| | - Margie Kinnersley
- Division of Biological Sciences, University of MontanaMissoulaUnited States
| | - Patrick R Secor
- Division of Biological Sciences, University of MontanaMissoulaUnited States
| | - Balyn W Zaro
- Department of Pharmaceutical Chemistry and Cardiovascular Research Institute, University of California, San FranciscoSan FranciscoUnited States
| | - Seemay Chou
- Department of Biochemistry & Biophysics, University of California, San FranciscoSan FranciscoUnited States
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5
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Affiliation(s)
- Madeleine C Thomson
- From the Climate and Health Challenge Area, the Wellcome Trust, London (M.C.T.); and the Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University, New York (L.R.S.)
| | - Lawrence R Stanberry
- From the Climate and Health Challenge Area, the Wellcome Trust, London (M.C.T.); and the Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University, New York (L.R.S.)
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6
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Guerrero D, Vo HTM, Lon C, Bohl JA, Nhik S, Chea S, Man S, Sreng S, Pacheco AR, Ly S, Sath R, Lay S, Missé D, Huy R, Leang R, Kry H, Valenzuela JG, Oliveira F, Cantaert T, Manning JE. Evaluation of cutaneous immune response in a controlled human in vivo model of mosquito bites. Nat Commun 2022; 13:7036. [PMID: 36396947 PMCID: PMC9672097 DOI: 10.1038/s41467-022-34534-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 10/27/2022] [Indexed: 11/18/2022] Open
Abstract
Mosquito-borne viruses are a growing global threat. Initial viral inoculation occurs in the skin via the mosquito 'bite', eliciting immune responses that shape the establishment of infection and pathogenesis. Here we assess the cutaneous innate and adaptive immune responses to controlled Aedes aegypti feedings in humans living in Aedes-endemic areas. In this single-arm, cross-sectional interventional study (trial registration #NCT04350905), we enroll 30 healthy adult participants aged 18 to 45 years of age from Cambodia between October 2020 and January 2021. We perform 3-mm skin biopsies at baseline as well as 30 min, 4 h, and 48 h after a controlled feeding by uninfected Aedes aegypti mosquitos. The primary endpoints are measurement of changes in early and late innate responses in bitten vs unbitten skin by gene expression profiling, immunophenotyping, and cytokine profiling. The results reveal induction of neutrophil degranulation and recruitment of skin-resident dendritic cells and M2 macrophages. As the immune reaction progresses T cell priming and regulatory pathways are upregulated along with a shift to Th2-driven responses and CD8+ T cell activation. Stimulation of participants' bitten skin cells with Aedes aegypti salivary gland extract results in reduced pro-inflammatory cytokine production. These results identify key immune genes, cell types, and pathways in the human response to mosquito bites and can be leveraged to inform and develop novel therapeutics and vector-targeted vaccine candidates to interfere with vector-mediated disease.
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Affiliation(s)
- David Guerrero
- Institut Pasteur du Cambodge, Pasteur Network, Phnom Penh, Cambodia
| | - Hoa Thi My Vo
- Institut Pasteur du Cambodge, Pasteur Network, Phnom Penh, Cambodia
| | - Chanthap Lon
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Jennifer A Bohl
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Sreynik Nhik
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Sophana Chea
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Somnang Man
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
- National Center of Parasitology, Entomology, and Malaria Control, Phnom Penh, Cambodia
| | - Sokunthea Sreng
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
- National Center of Parasitology, Entomology, and Malaria Control, Phnom Penh, Cambodia
| | - Andrea R Pacheco
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Sokna Ly
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Rathanak Sath
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia
| | - Sokchea Lay
- Institut Pasteur du Cambodge, Pasteur Network, Phnom Penh, Cambodia
| | - Dorothée Missé
- MIVEGEC, Univ. Montpellier, IRD, CNRS, 34000, Montpellier, France
| | - Rekol Huy
- National Center of Parasitology, Entomology, and Malaria Control, Phnom Penh, Cambodia
| | - Rithea Leang
- National Center of Parasitology, Entomology, and Malaria Control, Phnom Penh, Cambodia
| | - Hok Kry
- Kampong Speu Provincial District, Ministry of Health, Phnom Penh, Cambodia
| | - Jesus G Valenzuela
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Fabiano Oliveira
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Tineke Cantaert
- Institut Pasteur du Cambodge, Pasteur Network, Phnom Penh, Cambodia
| | - Jessica E Manning
- International Center of Excellence in Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Phnom Penh, Cambodia.
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA.
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Ratcliffe NA, Furtado Pacheco JP, Dyson P, Castro HC, Gonzalez MS, Azambuja P, Mello CB. Overview of paratransgenesis as a strategy to control pathogen transmission by insect vectors. Parasit Vectors 2022; 15:112. [PMID: 35361286 PMCID: PMC8969276 DOI: 10.1186/s13071-021-05132-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 12/13/2021] [Indexed: 12/12/2022] Open
Abstract
This article presents an overview of paratransgenesis as a strategy to control pathogen transmission by insect vectors. It first briefly summarises some of the disease-causing pathogens vectored by insects and emphasises the need for innovative control methods to counter the threat of resistance by both the vector insect to pesticides and the pathogens to therapeutic drugs. Subsequently, the state of art of paratransgenesis is described, which is a particularly ingenious method currently under development in many important vector insects that could provide an additional powerful tool for use in integrated pest control programmes. The requirements and recent advances of the paratransgenesis technique are detailed and an overview is given of the microorganisms selected for genetic modification, the effector molecules to be expressed and the environmental spread of the transgenic bacteria into wild insect populations. The results of experimental models of paratransgenesis developed with triatomines, mosquitoes, sandflies and tsetse flies are analysed. Finally, the regulatory and safety rules to be satisfied for the successful environmental release of the genetically engineered organisms produced in paratransgenesis are considered.
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Affiliation(s)
- Norman A Ratcliffe
- Programa de Pós-Graduação em Ciências e Biotecnologia, Instituto de Biologia (EGB), Universidade Federal Fluminense (UFF), Niterói, Brazil. .,Department of Biosciences, Swansea University, Singleton Park, Swansea, UK.
| | - João P Furtado Pacheco
- Programa de Pós-Graduação em Ciências e Biotecnologia, Instituto de Biologia (EGB), Universidade Federal Fluminense (UFF), Niterói, Brazil.,Laboratório de Biologia de Insetos, Instituto de Biologia (EGB), Universidade Federal Fluminense (UFF), Niterói, Brazil
| | - Paul Dyson
- Institute of Life Science, Medical School, Swansea University, Singleton Park, Swansea, UK
| | - Helena Carla Castro
- Programa de Pós-Graduação em Ciências e Biotecnologia, Instituto de Biologia (EGB), Universidade Federal Fluminense (UFF), Niterói, Brazil
| | - Marcelo S Gonzalez
- Programa de Pós-Graduação em Ciências e Biotecnologia, Instituto de Biologia (EGB), Universidade Federal Fluminense (UFF), Niterói, Brazil.,Laboratório de Biologia de Insetos, Instituto de Biologia (EGB), Universidade Federal Fluminense (UFF), Niterói, Brazil
| | - Patricia Azambuja
- Programa de Pós-Graduação em Ciências e Biotecnologia, Instituto de Biologia (EGB), Universidade Federal Fluminense (UFF), Niterói, Brazil.,Laboratório de Biologia de Insetos, Instituto de Biologia (EGB), Universidade Federal Fluminense (UFF), Niterói, Brazil
| | - Cicero B Mello
- Programa de Pós-Graduação em Ciências e Biotecnologia, Instituto de Biologia (EGB), Universidade Federal Fluminense (UFF), Niterói, Brazil.,Laboratório de Biologia de Insetos, Instituto de Biologia (EGB), Universidade Federal Fluminense (UFF), Niterói, Brazil
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Kotál J, Polderdijk SGI, Langhansová H, Ederová M, Martins LA, Beránková Z, Chlastáková A, Hajdušek O, Kotsyfakis M, Huntington JA, Chmelař J. Ixodes ricinus Salivary Serpin Iripin-8 Inhibits the Intrinsic Pathway of Coagulation and Complement. Int J Mol Sci 2021; 22:ijms22179480. [PMID: 34502392 PMCID: PMC8431025 DOI: 10.3390/ijms22179480] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/23/2021] [Accepted: 08/26/2021] [Indexed: 01/08/2023] Open
Abstract
Tick saliva is a rich source of antihemostatic, anti-inflammatory, and immunomodulatory molecules that actively help the tick to finish its blood meal. Moreover, these molecules facilitate the transmission of tick-borne pathogens. Here we present the functional and structural characterization of Iripin-8, a salivary serpin from the tick Ixodes ricinus, a European vector of tick-borne encephalitis and Lyme disease. Iripin-8 displayed blood-meal-induced mRNA expression that peaked in nymphs and the salivary glands of adult females. Iripin-8 inhibited multiple proteases involved in blood coagulation and blocked the intrinsic and common pathways of the coagulation cascade in vitro. Moreover, Iripin-8 inhibited erythrocyte lysis by complement, and Iripin-8 knockdown by RNA interference in tick nymphs delayed the feeding time. Finally, we resolved the crystal structure of Iripin-8 at 1.89 Å resolution to reveal an unusually long and rigid reactive center loop that is conserved in several tick species. The P1 Arg residue is held in place distant from the serpin body by a conserved poly-Pro element on the P′ side. Several PEG molecules bind to Iripin-8, including one in a deep cavity, perhaps indicating the presence of a small-molecule binding site. This is the first crystal structure of a tick serpin in the native state, and Iripin-8 is a tick serpin with a conserved reactive center loop that possesses antihemostatic activity that may mediate interference with host innate immunity.
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Affiliation(s)
- Jan Kotál
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
- Laboratory of Genomics and Proteomics of Disease Vectors, Institute of Parasitology, Biology Center CAS, Branišovská 1160/31, 37005 České Budějovice, Czech Republic;
| | - Stéphanie G. I. Polderdijk
- Cambridge Institute for Medical Research, Department of Haematology, University of Cambridge, The Keith Peters Building, Hills Road, Cambridge CB2 0XY, UK; (S.G.I.P.); (J.A.H.)
| | - Helena Langhansová
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
| | - Monika Ederová
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
| | - Larissa A. Martins
- Laboratory of Genomics and Proteomics of Disease Vectors, Institute of Parasitology, Biology Center CAS, Branišovská 1160/31, 37005 České Budějovice, Czech Republic;
| | - Zuzana Beránková
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
| | - Adéla Chlastáková
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
| | - Ondřej Hajdušek
- Laboratory of Vector Immunology, Institute of Parasitology, Biology Center CAS, Branišovská 1160/31, 37005 České Budějovice, Czech Republic;
| | - Michail Kotsyfakis
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
- Laboratory of Genomics and Proteomics of Disease Vectors, Institute of Parasitology, Biology Center CAS, Branišovská 1160/31, 37005 České Budějovice, Czech Republic;
| | - James A. Huntington
- Cambridge Institute for Medical Research, Department of Haematology, University of Cambridge, The Keith Peters Building, Hills Road, Cambridge CB2 0XY, UK; (S.G.I.P.); (J.A.H.)
| | - Jindřich Chmelař
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
- Correspondence:
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Boulanger N, Wikel S. Induced Transient Immune Tolerance in Ticks and Vertebrate Host: A Keystone of Tick-Borne Diseases? Front Immunol 2021; 12:625993. [PMID: 33643313 PMCID: PMC7907174 DOI: 10.3389/fimmu.2021.625993] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 01/22/2021] [Indexed: 12/23/2022] Open
Abstract
Ticks and tick transmitted infectious agents are increasing global public health threats due to increasing abundance, expanding geographic ranges of vectors and pathogens, and emerging tick-borne infectious agents. Greater understanding of tick, host, and pathogen interactions will contribute to development of novel tick control and disease prevention strategies. Tick-borne pathogens adapt in multiple ways to very different tick and vertebrate host environments and defenses. Ticks effectively pharmacomodulate by its saliva host innate and adaptive immune defenses. In this review, we examine the idea that successful synergy between tick and tick-borne pathogen results in host immune tolerance that facilitates successful tick infection and feeding, creates a favorable site for pathogen introduction, modulates cutaneous and systemic immune defenses to establish infection, and contributes to successful long-term infection. Tick, host, and pathogen elements examined here include interaction of tick innate immunity and microbiome with tick-borne pathogens; tick modulation of host cutaneous defenses prior to pathogen transmission; how tick and pathogen target vertebrate host defenses that lead to different modes of interaction and host infection status (reservoir, incompetent, resistant, clinically ill); tick saliva bioactive molecules as important factors in determining those pathogens for which the tick is a competent vector; and, the need for translational studies to advance this field of study. Gaps in our understanding of these relationships are identified, that if successfully addressed, can advance the development of strategies to successfully disrupt both tick feeding and pathogen transmission.
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Affiliation(s)
- Nathalie Boulanger
- Fédération de Médecine Translationnelle - UR7290, Early Bacterial Virulence, Group Borrelia, Université de Strasbourg, Strasbourg, France.,Centre National de Référence Borrelia, Centre Hospitalier Universitaire, Strasbourg, France
| | - Stephen Wikel
- Department of Medical Sciences, Frank H. Netter, M.D., School of Medicine, Quinnipiac University, Hamden, CT, United States
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10
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Temeyer KB, Schlechte KG, Olafson PU, Drolet BS, Tidwell JP, Osbrink WLA, Showler AT, Gross AD, Pérez de León AA. Association of Salivary Cholinesterase With Arthropod Vectors of Disease. JOURNAL OF MEDICAL ENTOMOLOGY 2020; 57:1679-1685. [PMID: 32459332 DOI: 10.1093/jme/tjaa096] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Indexed: 06/11/2023]
Abstract
Acetylcholinesterase (AChE) was previously reported to be present in saliva of the southern cattle tick, Rhipicephalus (Boophilus) microplus (Canestrini), with proposed potential functions to 1) reduce acetylcholine toxicity during rapid engorgement, 2) modulate host immune responses, and 3) to influence pathogen transmission and establishment in the host. Potential modulation of host immune responses might include participation in salivary-assisted transmission and establishment of pathogens in the host as has been reported for a number of arthropod vector-borne diseases. If the hypothesis that tick salivary AChE may alter host immune responses is correct, we reasoned that similar cholinesterase activities might be present in saliva of additional arthropod vectors. Here, we report the presence of AChE-like activity in the saliva of southern cattle ticks, Rhipicephalus (Boophilus) microplus; the lone star tick, Amblyomma americanum (Linnaeus); Asian tiger mosquitoes, Aedes albopictus (Skuse); sand flies, Phlebotomus papatasi (Scopoli); and biting midges, Culicoides sonorensis Wirth and Jones. Salivary AChE-like activity was not detected for horn flies Haematobia irritans (L.), stable flies Stomoxys calcitrans (L.), and house flies Musca domestica L. Salivary cholinesterase (ChE) activities of arthropod vectors of disease-causing agents exhibited various Michaelis-Menten KM values that were each lower than the KM value of bovine serum AChE. A lower KM value is indicative of higher affinity for substrate and is consistent with a hypothesized role in localized depletion of host tissue acetylcholine potentially modulating host immune responses at the arthropod bite site that may favor ectoparasite blood-feeding and alter host defensive responses against pathogen transmission and establishment.
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Affiliation(s)
- Kevin B Temeyer
- Knipling-Bushland U.S. Livestock Insects Research Laboratory, USDA-ARS, Kerrville, TX
| | - Kristie G Schlechte
- Knipling-Bushland U.S. Livestock Insects Research Laboratory, USDA-ARS, Kerrville, TX
| | - Pia U Olafson
- Knipling-Bushland U.S. Livestock Insects Research Laboratory, USDA-ARS, Kerrville, TX
| | - Barbara S Drolet
- Arthropod-Borne Animal Diseases Research Unit, Center for Grain and Animal Health Research, USDA-ARS, Manhattan, KS
| | - Jason P Tidwell
- Cattle Fever Tick Research Laboratory, USDA-ARS, Edinburg, TX
| | - Weste L A Osbrink
- Knipling-Bushland U.S. Livestock Insects Research Laboratory, USDA-ARS, Kerrville, TX
| | - Allan T Showler
- Knipling-Bushland U.S. Livestock Insects Research Laboratory, USDA-ARS, Kerrville, TX
| | - Aaron D Gross
- Molecular Physiology and Toxicology Laboratory, Department of Entomology, Virginia Polytechnic Institute and State University, Blacksburg, VA
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11
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Onyango MG, Ciota AT, Kramer LD. The Vector - Host - Pathogen Interface: The Next Frontier in the Battle Against Mosquito-Borne Viral Diseases? Front Cell Infect Microbiol 2020; 10:564518. [PMID: 33178624 PMCID: PMC7596266 DOI: 10.3389/fcimb.2020.564518] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 08/31/2020] [Indexed: 12/12/2022] Open
Abstract
An unprecedented spread of mosquito-borne viruses and increasing populations of mosquito vectors has led to an increase in the frequency of mosquito-borne virus disease outbreaks. Recent outbreaks of Zika virus (ZIKV) and yellow fever virus (YFV), among others have led to a concerted effort to understand the biology of mosquito-borne viruses and their interaction with their vector mosquito and vertebrate hosts. Recent studies have aimed to understand the vector-host-pathogen interface and how it influences infection, tropism and disease severity in the vertebrate host. The initial replication of the pathogen at the skin bite site is crucial in determining the progression of the infection in the vertebrate host. Delineating the role of the commensal microbes in the mosquito saliva as well as how they interact with the vertebrate host keratinocytes will improve our understanding of disease immunopathology and may lead to new therapeutics.
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Affiliation(s)
- Maria Gorreti Onyango
- New York State Department of Health, Wadsworth Center, Slingerlands, NY, United States
| | - Alexander T Ciota
- New York State Department of Health, Wadsworth Center, Slingerlands, NY, United States.,School of Public Health, State University of New York at Albany, Albany, NY, United States
| | - Laura D Kramer
- New York State Department of Health, Wadsworth Center, Slingerlands, NY, United States.,School of Public Health, State University of New York at Albany, Albany, NY, United States
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12
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Guerrero D, Cantaert T, Missé D. Aedes Mosquito Salivary Components and Their Effect on the Immune Response to Arboviruses. Front Cell Infect Microbiol 2020; 10:407. [PMID: 32850501 PMCID: PMC7426362 DOI: 10.3389/fcimb.2020.00407] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 06/30/2020] [Indexed: 12/25/2022] Open
Abstract
Vector-borne diseases are responsible for over a billion infections each year and nearly one million deaths. Mosquito-borne dengue virus, West Nile, Japanese encephalitis, Zika, Chikungunya, and Rift Valley Fever viruses constitute major public health problems in regions with high densities of arthropod vectors. During the initial step of the transmission cycle, vector, host, and virus converge at the bite site, where local immune cells interact with the vector's saliva. Hematophagous mosquito saliva is a mixture of bioactive components known to modulate vertebrate hemostasis, immunity, and inflammation during the insect's feeding process. The capacity of mosquito saliva to modulate the host immune response has been well-studied over the last few decades and has led to the consensus that the presence of saliva is linked to the enhancement of virus transmission, host susceptibility, disease progression, viremia levels, and mortality. We review some of the major aspects of the interactions between mosquito saliva and the host immune response that may be useful for future studies on the control of arboviruses.
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Affiliation(s)
- David Guerrero
- Immunology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
| | - Tineke Cantaert
- Immunology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
| | - Dorothée Missé
- MIVEGEC, IRD, University of Montpellier, CNRS, Montpellier, France
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13
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Christofferson RC, Parker DM, Overgaard HJ, Hii J, Devine G, Wilcox BA, Nam VS, Abubakar S, Boyer S, Boonnak K, Whitehead SS, Huy R, Rithea L, Sochantha T, Wellems TE, Valenzuela JG, Manning JE. Current vector research challenges in the greater Mekong subregion for dengue, Malaria, and Other Vector-Borne Diseases: A report from a multisectoral workshop March 2019. PLoS Negl Trop Dis 2020; 14:e0008302. [PMID: 32730249 PMCID: PMC7392215 DOI: 10.1371/journal.pntd.0008302] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Rebecca C. Christofferson
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana, United States of America
| | - Daniel M. Parker
- University of California, Irvine, California, United States of America
| | | | | | - Gregor Devine
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Bruce A. Wilcox
- ASEAN Institute for Health Development, Mahidol University, Nakhon Pathom, Thailand
| | - Vu Sinh Nam
- National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | - Sazaly Abubakar
- Tropical Infectious Diseases Research and Education Center, Kuala Lumpur, Malaysia
| | | | - Kobporn Boonnak
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Stephen S. Whitehead
- National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, United States of America
| | - Rekol Huy
- National Center for Parasitology Entomology and Malaria Control, Phnom Penh, Cambodia
| | - Leang Rithea
- National Center for Parasitology Entomology and Malaria Control, Phnom Penh, Cambodia
| | - Tho Sochantha
- National Center for Parasitology Entomology and Malaria Control, Phnom Penh, Cambodia
| | - Thomas E. Wellems
- National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, United States of America
| | - Jesus G. Valenzuela
- National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, United States of America
| | - Jessica E. Manning
- US National Institute of Allergy and Infectious Diseases, Phnom Penh, Cambodia
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14
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Manning JE, Oliveira F, Coutinho-Abreu IV, Herbert S, Meneses C, Kamhawi S, Baus HA, Han A, Czajkowski L, Rosas LA, Cervantes-Medina A, Athota R, Reed S, Mateja A, Hunsberger S, James E, Pleguezuelos O, Stoloff G, Valenzuela JG, Memoli MJ. Safety and immunogenicity of a mosquito saliva peptide-based vaccine: a randomised, placebo-controlled, double-blind, phase 1 trial. Lancet 2020; 395:1998-2007. [PMID: 32534628 PMCID: PMC9151349 DOI: 10.1016/s0140-6736(20)31048-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/09/2020] [Accepted: 04/27/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND In animal models, immunity to mosquito salivary proteins protects animals against mosquito-borne disease. These findings provide a rationale to vaccinate against mosquito saliva instead of the pathogen itself. To our knowledge, no vector salivary protein-based vaccine has been tested for safety and immunogenicity in humans. We aimed to assess the safety and immunogenicity of Anopheles gambiae saliva vaccine (AGS-v), a peptide-based vaccine derived from four A gambiae salivary proteins, in humans. METHODS In this randomised, placebo-controlled, double-blind, phase 1 trial, participants were enrolled at the National Institutes of Health Clinical Center in Bethesda, MD, USA. Participants were eligible if they were healthy adults, aged 18-50 years with no history of severe allergic reactions to mosquito bites. Participants were randomly assigned (1:1:1), using block randomisation and a computer-generated randomisation sequence, to treatment with either 200 nmol of AGS-v vaccine alone, 200 nmol of AGS-v with adjuvant (Montanide ISA 51), or sterile water as placebo. Participants and clinicians were masked to treatment assignment. Participants were given a subcutaneous injection of their allocated treatment at day 0 and day 21, followed by exposure to feeding by an uninfected Aedes aegypti mosquito at day 42 to assess subsequent risk to mosquito bites in a controlled setting. The primary endpoints were safety and immunogenicity at day 42 after the first immunisation. Participants who were given at least one dose of assigned treatment were assessed for the primary endpoints and analysis was by intention to treat. The trial was registered with ClinicalTrials.gov, NCT03055000, and is closed for accrual. FINDINGS Between Feb 15 and Sept 10, 2017, we enrolled and randomly assigned 49 healthy adult participants to the adjuvanted vaccine (n=17), vaccine alone (n=16), or placebo group (n=16). Five participants did not complete the two-injection regimen with mosquito feeding at day 42, but were included in the safety analyses. No systemic safety concerns were identified; however, one participant in the adjuvanted vaccine group developed a grade 3 erythematous rash at the injection site. Pain, swelling, erythema, and itching were the most commonly reported local symptoms and were significantly increased in the adjuvanted vaccine group compared with both other treatment groups (nine [53%] of 17 participants in the adjuvanted vaccine group, two [13%] of 16 in the vaccine only group, and one [6%] of 16 in the placebo group; p=0·004). By day 42, participants who were given the adjuvanted vaccine had a significant increase in vaccine-specific total IgG antibodies compared with at baseline than did participants who were give vaccine only (absolute difference of log10-fold change of 0·64 [95% CI 0·39 to 0·89]; p=0·0002) and who were given placebo (0·62 [0·34 to 0·91]; p=0·0001). We saw a significant increase in IFN-γ production by peripheral blood mononuclear cells at day 42 in the adjuvanted vaccine group compared with in the placebo group (absolute difference of log10 ratio of vaccine peptide-stimulated vs negative control 0·17 [95% CI 0·061 to 0·27]; p=0·009) but we saw no difference between the IFN-γ production in the vaccine only group compared with the placebo group (0·022 [-0·072 to 0·116]; p=0·63). INTERPRETATION AGS-v was well tolerated, and, when adjuvanted, immunogenic. These findings suggest that vector-targeted vaccine administration in humans is safe and could be a viable option for the increasing burden of vector-borne disease. FUNDING Office of the Director and the Division of Intramural Research at the National Institute of Allergy and Infectious Diseases, and National Institutes of Health.
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Affiliation(s)
- Jessica E Manning
- Laboratory of Malaria and Vector Research, National Institutes of Health, Bethesda, MD, USA.
| | - Fabiano Oliveira
- Laboratory of Malaria and Vector Research, National Institutes of Health, Bethesda, MD, USA
| | | | - Samantha Herbert
- Laboratory of Malaria and Vector Research, National Institutes of Health, Bethesda, MD, USA
| | - Claudio Meneses
- Laboratory of Malaria and Vector Research, National Institutes of Health, Bethesda, MD, USA
| | - Shaden Kamhawi
- Laboratory of Malaria and Vector Research, National Institutes of Health, Bethesda, MD, USA
| | - Holly Ann Baus
- LID Clinical Studies Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Alison Han
- LID Clinical Studies Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Lindsay Czajkowski
- LID Clinical Studies Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Luz Angela Rosas
- LID Clinical Studies Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Adriana Cervantes-Medina
- LID Clinical Studies Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Rani Athota
- LID Clinical Studies Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Susan Reed
- LID Clinical Studies Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Allyson Mateja
- Clinical Monitoring Research Program Directorate, Frederick National Laboratory for Cancer Research, sponsored by the National Cancer Institute, National Institutes of Health, Frederick, MD, USA
| | - Sally Hunsberger
- Biostatistics Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | | | | | | | - Jesus G Valenzuela
- Laboratory of Malaria and Vector Research, National Institutes of Health, Bethesda, MD, USA
| | - Matthew J Memoli
- LID Clinical Studies Unit, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
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