1
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Louvat C, Deymier S, Nguyen XN, Labaronne E, Noy K, Cariou M, Corbin A, Mateo M, Ricci EP, Fiorini F, Cimarelli A. Stable structures or PABP1 loading protects cellular and viral RNAs against ISG20-mediated decay. Life Sci Alliance 2024; 7:e202302233. [PMID: 38418089 PMCID: PMC10902665 DOI: 10.26508/lsa.202302233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 02/23/2024] [Accepted: 02/23/2024] [Indexed: 03/01/2024] Open
Abstract
ISG20 is an IFN-induced 3'-5' RNA exonuclease that acts as a broad antiviral factor. At present, the features that expose RNA to ISG20 remain unclear, although recent studies have pointed to the modulatory role of epitranscriptomic modifications in the susceptibility of target RNAs to ISG20. These findings raise the question as to how cellular RNAs, on which these modifications are abundant, cope with ISG20. To obtain an unbiased perspective on this topic, we used RNA-seq and biochemical assays to identify elements that regulate the behavior of RNAs against ISG20. RNA-seq analyses not only indicate a general preservation of the cell transcriptome, but they also highlight a small, but detectable, decrease in the levels of histone mRNAs. Contrarily to all other cellular ones, histone mRNAs are non-polyadenylated and possess a short stem-loop at their 3' end, prompting us to examine the relationship between these features and ISG20 degradation. The results we have obtained indicate that poly(A)-binding protein loading on the RNA 3' tail provides a primal protection against ISG20, easily explaining the overall protection of cellular mRNAs observed by RNA-seq. Terminal stem-loop RNA structures have been associated with ISG20 protection before. Here, we re-examined this question and found that the balance between resistance and susceptibility to ISG20 depends on their thermodynamic stability. These results shed new light on the complex interplay that regulates the susceptibility of different classes of viruses against ISG20.
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Affiliation(s)
- Camille Louvat
- Molecular Microbiology and Structural Biochemistry, MMSB-IBCP, UMR 5086 CNRS University of Lyon, Lyon, France
| | - Séverine Deymier
- https://ror.org/059sz6q14 Centre International de Recherche en Infectiologie(CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, École Nationale Supérieure de Lyon, Lyon, France
| | - Xuan-Nhi Nguyen
- https://ror.org/059sz6q14 Centre International de Recherche en Infectiologie(CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, École Nationale Supérieure de Lyon, Lyon, France
| | - Emmanuel Labaronne
- Laboratoire de Biologie et Modelisation de la Cellule, Université de Lyon, ENS de Lyon, Université Claude Bernard, CNRS UMR 5239, Inserm, U1293, Lyon, France
| | - Kodie Noy
- https://ror.org/059sz6q14 Centre International de Recherche en Infectiologie(CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, École Nationale Supérieure de Lyon, Lyon, France
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
| | - Marie Cariou
- https://ror.org/059sz6q14 Centre International de Recherche en Infectiologie(CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, École Nationale Supérieure de Lyon, Lyon, France
| | - Antoine Corbin
- https://ror.org/059sz6q14 Centre International de Recherche en Infectiologie(CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, École Nationale Supérieure de Lyon, Lyon, France
| | - Mathieu Mateo
- https://ror.org/059sz6q14 Centre International de Recherche en Infectiologie(CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, École Nationale Supérieure de Lyon, Lyon, France
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
| | - Emiliano P Ricci
- Laboratoire de Biologie et Modelisation de la Cellule, Université de Lyon, ENS de Lyon, Université Claude Bernard, CNRS UMR 5239, Inserm, U1293, Lyon, France
| | - Francesca Fiorini
- Molecular Microbiology and Structural Biochemistry, MMSB-IBCP, UMR 5086 CNRS University of Lyon, Lyon, France
| | - Andrea Cimarelli
- https://ror.org/059sz6q14 Centre International de Recherche en Infectiologie(CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, École Nationale Supérieure de Lyon, Lyon, France
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2
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Lafoux B, Baillet N, Picard C, Fourcaud G, Borges-Cardoso V, Reynard S, Journeaux A, Germain C, Perthame E, Mateo M, Hortion J, Carnec X, Pietrosemoli N, Moroso M, Lacroix O, Jourjon O, Barron S, Vallve A, Duthey A, Jacquot F, Barrot L, Dirheimer M, Raoul H, Nougier C, Baize S. Hemostasis defects underlying the hemorrhagic syndrome caused by mammarenaviruses in a cynomolgus macaque model. Blood 2023; 142:2092-2104. [PMID: 37699247 DOI: 10.1182/blood.2023020351] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 07/18/2023] [Accepted: 08/15/2023] [Indexed: 09/14/2023] Open
Abstract
Viral hemorrhagic fevers (HF) are a group of acute febrile diseases with high mortality rates. Although hemostatic dysfunction appears to be a major determinant of the severity of the disease, it is still unclear what pathogenic mechanisms lead to it. In clinical studies it is found that arenaviruses, such as Lassa, Machupo, and Guanarito viruses cause HF that vary in symptoms and biological alterations. In this study we aimed to characterize the hemostatic dysfunction induced by arenaviral HF to determine its implication in the severity of the disease and to elucidate the origin of this syndrome. We found that lethal infection with Machupo, Guanarito, and Lassa viruses is associated with cutaneomucosal, cerebral, digestive, and pulmonary hemorrhages. The affected animals developed a severe alteration of the coagulation system, which was concomitant with acute hepatitis, minor deficit of hepatic factor synthesis, presence of a plasmatic inhibitor of coagulation, and dysfunction of the fibrinolytic system. Despite signs of increased vascular permeability, endothelial cell infection was not a determinant factor of the hemorrhagic syndrome. There were also alterations of the primary hemostasis during lethal infection, with moderate to severe thrombocytopenia and platelet dysfunction. Finally, we show that lethal infection is accompanied by a reduced hematopoietic potential of the bone marrow. This study provides an unprecedented characterization of the hemostasis defects induced by several highly pathogenic arenaviruses.
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Affiliation(s)
- Blaise Lafoux
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
- Centre International de Recherche en Infectiologie, Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, Centre National de la Recherche Scientifique UMR5308, Lyon, France
| | - Nicolas Baillet
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
- Centre International de Recherche en Infectiologie, Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, Centre National de la Recherche Scientifique UMR5308, Lyon, France
| | - Caroline Picard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
- Centre International de Recherche en Infectiologie, Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, Centre National de la Recherche Scientifique UMR5308, Lyon, France
| | - Gustave Fourcaud
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
- Centre International de Recherche en Infectiologie, Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, Centre National de la Recherche Scientifique UMR5308, Lyon, France
| | - Virginie Borges-Cardoso
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
- Centre International de Recherche en Infectiologie, Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, Centre National de la Recherche Scientifique UMR5308, Lyon, France
| | - Stéphanie Reynard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
- Centre International de Recherche en Infectiologie, Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, Centre National de la Recherche Scientifique UMR5308, Lyon, France
| | - Alexandra Journeaux
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
- Centre International de Recherche en Infectiologie, Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, Centre National de la Recherche Scientifique UMR5308, Lyon, France
| | - Clara Germain
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
- Centre International de Recherche en Infectiologie, Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, Centre National de la Recherche Scientifique UMR5308, Lyon, France
| | - Emeline Perthame
- Institut Pasteur, Université Paris Cité, Bioinformatics and Biostatistics Hub, Paris, France
| | - Mathieu Mateo
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
- Centre International de Recherche en Infectiologie, Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, Centre National de la Recherche Scientifique UMR5308, Lyon, France
| | - Jimmy Hortion
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
- Centre International de Recherche en Infectiologie, Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, Centre National de la Recherche Scientifique UMR5308, Lyon, France
| | - Xavier Carnec
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
- Centre International de Recherche en Infectiologie, Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, Centre National de la Recherche Scientifique UMR5308, Lyon, France
| | - Natalia Pietrosemoli
- Institut Pasteur, Université Paris Cité, Bioinformatics and Biostatistics Hub, Paris, France
| | - Marie Moroso
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, Lyon, France
| | - Orianne Lacroix
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, Lyon, France
| | - Ophélie Jourjon
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, Lyon, France
| | - Stéphane Barron
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, Lyon, France
| | - Audrey Vallve
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, Lyon, France
| | - Aurélie Duthey
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, Lyon, France
| | | | - Laura Barrot
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, Lyon, France
| | - Manon Dirheimer
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, Lyon, France
| | - Hervé Raoul
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, Lyon, France
| | - Christophe Nougier
- Service d'hématologie Biologique, Centre de Pathologie et Biologie Est, Groupement Hospitalier Est, Hospices Civils de Lyon, Bron, France
| | - Sylvain Baize
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
- Centre International de Recherche en Infectiologie, Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, Centre National de la Recherche Scientifique UMR5308, Lyon, France
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3
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Mateo M, Baize S. [Recent advances in the development of vaccines against hemorrhagic fevers caused by arenaviruses]. Med Sci (Paris) 2023; 39:855-861. [PMID: 38018929 DOI: 10.1051/medsci/2023162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023] Open
Abstract
Arenaviruses are a global threat, causing thousands of deaths each year in several countries around the world. Despite strong efforts in the development of vaccine candidates, vaccines against Lassa fever or Bolivian and Venezuelan hemorrhagic fevers are yet to be licensed for a use in humans. In this synthesis, we present the arenaviruses causing fatal diseases in humans and the main vaccine candidates that have been developed over the past decades with an emphasis on the measles-Lassa vaccine, the first Lassa vaccine ever tested in humans, and on the MOPEVAC platform that can potentially be used as a pan-arenavirus vaccine platform.
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Affiliation(s)
- Mathieu Mateo
- Institut Pasteur, Université Paris Cité, Unité de biologie des infections virales émergentes, Paris, France - Centre international de recherche en infectiologie (CIRI), université de Lyon, Inserm U1111, école normale supérieure de Lyon, université Lyon 1, CNRS UMR5308, 69-007, Lyon, France
| | - Sylvain Baize
- Institut Pasteur, Université Paris Cité, Unité de biologie des infections virales émergentes, Paris, France - Centre international de recherche en infectiologie (CIRI), université de Lyon, Inserm U1111, école normale supérieure de Lyon, université Lyon 1, CNRS UMR5308, 69-007, Lyon, France
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4
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Tschismarov R, Van Damme P, Germain C, De Coster I, Mateo M, Reynard S, Journeaux A, Tomberger Y, Withanage K, Haslwanter D, Terler K, Schrauf S, Müllner M, Tauber E, Ramsauer K, Baize S. Immunogenicity, safety, and tolerability of a recombinant measles-vectored Lassa fever vaccine: a randomised, placebo-controlled, first-in-human trial. Lancet 2023; 401:1267-1276. [PMID: 36934733 DOI: 10.1016/s0140-6736(23)00048-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/23/2022] [Accepted: 01/05/2023] [Indexed: 03/18/2023]
Abstract
BACKGROUND Lassa fever is a substantial health burden in west Africa. We evaluated the safety, tolerability, and immunogenicity of a recombinant, live-attenuated, measles-vectored Lassa fever vaccine candidate (MV-LASV). METHODS This first-in-human phase 1 trial-consisting of an open-label dose-escalation stage and an observer-blinded, randomised, placebo-controlled treatment stage-was conducted at a single site at the University of Antwerp, Antwerp, Belgium, and involved healthy adults aged 18-55 years. Participants in the dose-escalation stage were sequentially assigned to a low-dose group (two intramuscular doses of MV-LASV at 2 × 104 times the median tissue culture infectious dose) or a high-dose group (two doses at 1 × 105 times the median tissue culture infectious dose). Participants in the double-blinded treatment stage were randomly assigned in a 2:2:1 ratio to receive low dose, high dose, or placebo. The primary endpoint was the rate of solicited and unsolicited adverse events up to study day 56 and was assessed in all participants who received at least one dose of investigational product. The trial is registered with ClinicalTrials.gov, NCT04055454, and the European Union Drug Regulating Authorities Clinical Trials Database, 2018-003647-40, and is complete. FINDINGS Between Sept 26, 2019, and Jan 20, 2020, 60 participants were enrolled and assigned to receive placebo (n=12) or MV-LASV (n=48). All 60 participants received at least one study treatment. Most adverse events occurred during the treatment phase, and frequencies of total solicited or unsolicited adverse events were similar between treatment groups, with 96% of participants in the low-dose group, 100% of those in the high-dose group, and 92% of those in the placebo group having any solicited adverse event (p=0·6751) and 76% of those in the low-dose group, 70% of those in the high-dose group, and 100% of those in the placebo group having any unsolicited adverse event (p=0·1047). The only significant difference related to local solicited adverse events, with higher frequencies observed in groups receiving MV-LASV (24 [96%] of 25 participants in the low-dose group; all 23 [100%] participants in the high-dose group) than in the placebo group (6 [50%] of 12 participants; p=0·0001, Fisher-Freeman-Halton test). Adverse events were mostly of mild or moderate severity, and no serious adverse events were observed. MV-LASV also induced substantial concentrations of LASV-specific IgG (geometric mean titre 62·9 EU/ml in the low-dose group and 145·9 EU/ml in the high-dose group on day 42). INTERPRETATION MV-LASV showed an acceptable safety and tolerability profile, and immunogenicity seemed to be unaffected by pre-existing immunity against the vector. MV-LASV is therefore a promising candidate for further development. FUNDING Coalition for Epidemic Preparedness Innovations.
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Affiliation(s)
- Roland Tschismarov
- Themis Bioscience, Vienna, Austria, a subsidiary of Merck & Co, Rahway, NJ, USA.
| | - Pierre Van Damme
- Center for the Evaluation of Vaccination, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - Clara Germain
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France; Centre International de Recherche en Infectiologie, Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
| | - Ilse De Coster
- Center for the Evaluation of Vaccination, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - Mathieu Mateo
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France; Centre International de Recherche en Infectiologie, Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
| | - Stephanie Reynard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France; Centre International de Recherche en Infectiologie, Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
| | - Alexandra Journeaux
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France
| | - Yvonne Tomberger
- Themis Bioscience, Vienna, Austria, a subsidiary of Merck & Co, Rahway, NJ, USA
| | - Kanchanamala Withanage
- Center for the Evaluation of Vaccination, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - Denise Haslwanter
- Themis Bioscience, Vienna, Austria, a subsidiary of Merck & Co, Rahway, NJ, USA
| | - Katherine Terler
- Themis Bioscience, Vienna, Austria, a subsidiary of Merck & Co, Rahway, NJ, USA
| | - Sabrina Schrauf
- Themis Bioscience, Vienna, Austria, a subsidiary of Merck & Co, Rahway, NJ, USA
| | - Matthias Müllner
- Themis Bioscience, Vienna, Austria, a subsidiary of Merck & Co, Rahway, NJ, USA
| | - Erich Tauber
- Themis Bioscience, Vienna, Austria, a subsidiary of Merck & Co, Rahway, NJ, USA
| | - Katrin Ramsauer
- Themis Bioscience, Vienna, Austria, a subsidiary of Merck & Co, Rahway, NJ, USA
| | - Sylvain Baize
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France; Centre International de Recherche en Infectiologie, Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
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5
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Mateo M, Reynard S, Pietrosemoli N, Perthame E, Journeaux A, Noy K, Germain C, Carnec X, Picard C, Borges-Cardoso V, Hortion J, Lopez-Maestre H, Regnard P, Fellmann L, Vallve A, Barron S, Jourjon O, Lacroix O, Duthey A, Dirheimer M, Daniau M, Legras-Lachuer C, Carbonnelle C, Raoul H, Tangy F, Baize S. Rapid protection induced by a single-shot Lassa vaccine in male cynomolgus monkeys. Nat Commun 2023; 14:1352. [PMID: 36906645 PMCID: PMC10008018 DOI: 10.1038/s41467-023-37050-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 02/22/2023] [Indexed: 03/13/2023] Open
Abstract
Lassa fever hits West African countries annually in the absence of licensed vaccine to limit the burden of this viral hemorrhagic fever. We previously developed MeV-NP, a single-shot vaccine protecting cynomolgus monkeys against divergent strains one month or more than a year before Lassa virus infection. Given the limited dissemination area during outbreaks and the risk of nosocomial transmission, a vaccine inducing rapid protection could be useful to protect exposed people during outbreaks in the absence of preventive vaccination. Here, we test whether the time to protection can be reduced after immunization by challenging measles virus pre-immune male cynomolgus monkeys sixteen or eight days after a single shot of MeV-NP. None of the immunized monkeys develop disease and they rapidly control viral replication. Animals immunized eight days before the challenge are the best controllers, producing a strong CD8 T-cell response against the viral glycoprotein. A group of animals was also vaccinated one hour after the challenge, but was not protected and succumbed to the disease as the control animals. This study demonstrates that MeV-NP can induce a rapid protective immune response against Lassa fever in the presence of MeV pre-existing immunity but can likely not be used as therapeutic vaccine.
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Affiliation(s)
- Mathieu Mateo
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007, Lyon, France
| | - Stéphanie Reynard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007, Lyon, France
| | - Natalia Pietrosemoli
- Institut Pasteur, Université Paris Cité, Bioinformatics and Biostatistics Hub, Paris, France
| | - Emeline Perthame
- Institut Pasteur, Université Paris Cité, Bioinformatics and Biostatistics Hub, Paris, France
| | - Alexandra Journeaux
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007, Lyon, France
| | - Kodie Noy
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007, Lyon, France
| | - Clara Germain
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007, Lyon, France
| | - Xavier Carnec
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007, Lyon, France
| | - Caroline Picard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007, Lyon, France
| | - Virginie Borges-Cardoso
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007, Lyon, France
| | - Jimmy Hortion
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007, Lyon, France
| | - Hélène Lopez-Maestre
- Institut Pasteur, Université Paris Cité, Bioinformatics and Biostatistics Hub, Paris, France
| | - Pierrick Regnard
- SILABE, Université de Strasbourg, fort Foch, Niederhausbergen, France
| | - Lyne Fellmann
- SILABE, Université de Strasbourg, fort Foch, Niederhausbergen, France
| | - Audrey Vallve
- Laboratoire P4 INSERM - Jean Mérieux, INSERM US003, 69007, Lyon, France
| | - Stéphane Barron
- Laboratoire P4 INSERM - Jean Mérieux, INSERM US003, 69007, Lyon, France
| | - Ophélie Jourjon
- Laboratoire P4 INSERM - Jean Mérieux, INSERM US003, 69007, Lyon, France
| | - Orianne Lacroix
- Laboratoire P4 INSERM - Jean Mérieux, INSERM US003, 69007, Lyon, France
| | - Aurélie Duthey
- Laboratoire P4 INSERM - Jean Mérieux, INSERM US003, 69007, Lyon, France
| | - Manon Dirheimer
- INSERM, Délégation Régionale Auvergne Rhône-Alpes, 69500, Bron, France
| | | | | | | | - Hervé Raoul
- Laboratoire P4 INSERM - Jean Mérieux, INSERM US003, 69007, Lyon, France
| | - Frédéric Tangy
- Vaccine Innovation Laboratory, Institut Pasteur, 75015, Paris, France
| | - Sylvain Baize
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007, Lyon, France. .,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007, Lyon, France.
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6
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de Velasco Oria de Rueda G, Plata Bello AC, Landeira M, Mateo M, Anguita P, Pranzo A, Snijder R, Garnham A, Hernández I. Incidence, prevalence, and treatment patterns in metastatic hormone-sensitive prostate cancer in Spain: ECHOS study. Actas Urol Esp 2022; 46:557-564. [PMID: 36241525 DOI: 10.1016/j.acuroe.2022.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 02/07/2022] [Indexed: 11/05/2022]
Abstract
INTRODUCTION AND OBJECTIVE The management of patients with metastatic hormone-sensitive prostate cancer (mHSPC) has changed in recent years due to the approval of new drugs. The aim of this study was to evaluate the prevalence, incidence, and treatment patterns in mHSPC in Spain. PATIENTS AND METHODS Multicenter, observational, longitudinal, retrospective study in routine clinical practice of patients diagnosed with mHSPC treated in Spanish hospitals between 2015 and 2019 (ECHOS study). Electronic medical records were extracted from BIG-PAC database, which contains geographically representative Spanish centers. RESULTS Data from 379 men with mHSPC were included. The prevalence of mHSPC ranged between 12.2-14.6% per year, representing from 671 to 824 annual cases with an increasing trend. The mean incidence along the 4-year period was 2.5%, with annual incidence ranging 2.2-3.0%. New annual cases of de novo and recurrent disease ranged between 7-11 and 77-104, respectively, with no trend being observed. These patients were mostly recurrent (91%) with high-volume disease (68.6%). The most common first-line therapy was ADT combined with docetaxel (53%), followed by ADT alone (23.8%), combination of ADT and abiraterone (11.2%), and radiotherapy (8.6%). In the last 12 months before diagnosis of metastasis, most men had been submitted to radical prostatectomy (84.9%). The remaining patients had received radiotherapy (12%) or no treatment at all (3.8%). CONCLUSIONS The ECHOS study provides epidemiologic data and current patterns of treatment in clinical practice of patients with mHSPC in Spain. These results emphasize the medical need of targeted treatments in these clinical settings.
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Affiliation(s)
| | - A C Plata Bello
- Servicio de Urología, Hospital Universitario de Canarias, Santa Cruz de Tenerife, Spain
| | - M Landeira
- Departamento Médico, Astellas Pharma S.A., Madrid, Spain
| | - M Mateo
- Departamento Médico, Astellas Pharma S.A., Madrid, Spain.
| | - P Anguita
- Departamento Médico, Astellas Pharma S.A., Madrid, Spain
| | - A Pranzo
- AIA Real World Data & Evidence, Astellas Pharma Ltd, Surrey, United Kingdom
| | - R Snijder
- AIA Real World Data & Evidence, Astellas Pharma Ltd, Surrey, United Kingdom
| | - A Garnham
- AIA Real World Data & Evidence, Astellas Pharma Ltd, Surrey, United Kingdom
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7
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Mateo M, Hortion J, Perthame E, Picard C, Reynard S, Journeaux A, Germain C, Carnec X, Baillet N, Borges-Cardoso V, Pietrosemoli N, Vallve A, Barron S, Jourjon O, Lacroix O, Duthey A, Dirheimer M, Daniau M, Legras-Lachuer C, Jouvion G, Carbonnelle C, Raoul H, Baize S. Pathogenesis of recent Lassa virus isolates from lineages II and VII in cynomolgus monkeys. Virulence 2022; 13:654-669. [PMID: 35437094 PMCID: PMC9037461 DOI: 10.1080/21505594.2022.2060170] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
The area of Lassa virus (LASV) circulation is expanding, with the emergence of highly pathogenic new LASV lineages. Benin recently became an endemic country for LASV and has seen the emergence of a new LASV lineage (VII). The first two outbreaks in 2014 and 2016 showed a relatively high mortality rate compared to other outbreaks. We infected cynomolgus monkeys with two strains belonging to lineage II and lineage VII that were isolated from deceased patients during the 2016 outbreak in Benin. The lineage VII strain (L7) caused uniform mortality. Death was associated with uncontrolled viral replication, unbalanced inflammatory responses characterized by increased concentrations of pro- and anti-inflammatory mediators, and the absence of efficient immune responses, resembling the pathogenesis associated with the prototypic Josiah strain in monkeys. The lineage II strain (L2) showed apparently lower virulence than its counterpart, with a prolonged time to death and a lower mortality rate. Prolonged survival was associated with better control of viral replication, a moderate inflammatory response, and efficient T-cell responses. Transcriptomic analyses also highlighted important differences in the immune responses associated with the outcome. Both strains caused strong inflammation in several organs. Notably, meningitis and encephalitis were observed in the cerebral cortex and cerebellum in all monkeys, independently of the outcome. Due to their apparently high pathogenicity, emerging strains from lineage VII should be considered in preclinical vaccine testing. Lineage II would also be beneficial in pathogenesis studies to study the entire spectrum of Lassa fever severity.
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Affiliation(s)
- Mathieu Mateo
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon France
| | - Jimmy Hortion
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon France
| | - Emeline Perthame
- Bioinformatics and Biostatistics Hub, Institut Pasteur, Université de Paris, Paris, France
| | - Caroline Picard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon France
| | - Stéphanie Reynard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon France
| | - Alexandra Journeaux
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon France
| | - Clara Germain
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon France
| | - Xavier Carnec
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon France
| | - Nicolas Baillet
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon France
| | - Virginie Borges-Cardoso
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon France
| | - Natalia Pietrosemoli
- Bioinformatics and Biostatistics Hub, Institut Pasteur, Université de Paris, Paris, France
| | - Audrey Vallve
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, 69007 Lyon, France
| | - Stéphane Barron
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, 69007 Lyon, France
| | - Ophélie Jourjon
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, 69007 Lyon, France
| | - Orianne Lacroix
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, 69007 Lyon, France
| | - Aurélie Duthey
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, 69007 Lyon, France
| | - Manon Dirheimer
- INSERM, Délégation Régionale Auvergne Rhône-Alpes, Bron, France
| | | | | | - Gregory Jouvion
- Ecole Nationale Vétérinaire d'Alfort, Unité d'Histologie et d'Anatomie Pathologique, Maisons-Alfort, France.,Dynamic Research Group, Ecole Nationale Vétérinaired'Alfort, USC ANSES, Université Paris Est Créteil, Maisons-Alfort, France
| | | | - Hervé Raoul
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, 69007 Lyon, France
| | - Sylvain Baize
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon France
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8
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Mateo M, Reynard S, Journeaux A, Germain C, Hortion J, Carnec X, Picard C, Baillet N, Borges-Cardoso V, Merabet O, Vallve A, Barron S, Jourjon O, Lacroix O, Duthey A, Dirheimer M, Jouvion G, Moreau PH, Fellmann L, Carbonnelle C, Raoul H, Tangy F, Baize S. A single-shot Lassa vaccine induces long-term immunity and protects cynomolgus monkeys against heterologous strains. Sci Transl Med 2021; 13:13/597/eabf6348. [PMID: 34108251 DOI: 10.1126/scitranslmed.abf6348] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 02/12/2021] [Accepted: 04/15/2021] [Indexed: 12/12/2022]
Abstract
A safe and protective Lassa virus vaccine is crucially needed in Western Africa to stem the recurrent outbreaks of Lassa virus infections in Nigeria and the emergence of Lassa virus in previously unaffected countries, such as Benin and Togo. Major challenges in developing a Lassa virus vaccine include the high diversity of circulating strains and their reemergence from 1 year to another. To address each of these challenges, we immunized cynomolgus monkeys with a measles virus vector expressing the Lassa virus glycoprotein and nucleoprotein of the prototypic Lassa virus strain Josiah (MeV-NP). To evaluate vaccine efficacy against heterologous strains of Lassa virus, we challenged the monkeys a month later with heterologous strains from lineage II or lineage VII, finding that the vaccine was protective against these strains. A second cohort of monkeys was challenged 1 year later with the homologous Josiah strain, finding that a single dose of MeV-NP was sufficient to protect all vaccinated monkeys. These studies demonstrate that MeV-NP can generate both long-lasting immune responses and responses that are able to protect against diverse strains of Lassa virus.
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Affiliation(s)
- Mathieu Mateo
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007 Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007 Lyon, France
| | - Stéphanie Reynard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007 Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007 Lyon, France
| | - Alexandra Journeaux
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007 Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007 Lyon, France
| | - Clara Germain
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007 Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007 Lyon, France
| | - Jimmy Hortion
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007 Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007 Lyon, France
| | - Xavier Carnec
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007 Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007 Lyon, France
| | - Caroline Picard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007 Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007 Lyon, France
| | - Nicolas Baillet
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007 Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007 Lyon, France
| | - Virginie Borges-Cardoso
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007 Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007 Lyon, France
| | - Othmann Merabet
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007 Lyon, France.,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007 Lyon, France
| | - Audrey Vallve
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, 69007 Lyon, France
| | - Stéphane Barron
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, 69007 Lyon, France
| | - Ophélie Jourjon
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, 69007 Lyon, France
| | - Orianne Lacroix
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, 69007 Lyon, France
| | - Aurélie Duthey
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, 69007 Lyon, France
| | - Manon Dirheimer
- INSERM, Délégation Régionale Auvergne Rhône-Alpes, 69500 Bron, France
| | - Gregory Jouvion
- Ecole Nationale Vétérinaire d'Alfort, Unité d'Histologie et d'Anatomie Pathologique, 94700 Maisons-Alfort, France.,Dynamic Research Group, Université Paris Est Créteil, Ecole Nationale Vétérinaire d'Alfort, USC ANSES, 94700 Maisons-Alfort, France
| | | | - Lyne Fellmann
- SILABE, Université de Strasbourg, Fort Foch, 67207 Niederhausbergen, France
| | | | - Hervé Raoul
- Laboratoire P4 INSERM-Jean Mérieux, INSERM US003, 69007 Lyon, France
| | - Frédéric Tangy
- Viral Genomics and Vaccination, Institut Pasteur, CNRS UMR-3569, 75015 Paris, France
| | - Sylvain Baize
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, 69007 Lyon, France. .,Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, INSERM U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, 69007 Lyon, France
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9
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Mateo M, Picard C, Sylla Y, Kamo E, Odegue D, Journeaux A, Kan SK, Money M, Coulibaly DN, Koffi E, Meite S, Akran V, Kadjo H, Adjogoua E, Kakou SN, Baize S, Dosso M. Fatal Case of Lassa Fever, Bangolo District, Côte d'Ivoire, 2015. Emerg Infect Dis 2020; 25:1753-1756. [PMID: 31441759 PMCID: PMC6711234 DOI: 10.3201/eid2509.190239] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Lassa fever has not been reported in Côte d’Ivoire. We performed a retrospective analysis of human serum samples collected in Côte d’Ivoire in the dry seasons (January–April) during 2015–2018. We identified a fatal human case of Lassa fever in the Bangolo District of western Côte d’Ivoire during 2015.
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10
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Keita AK, Vidal N, Toure A, Diallo MSK, Magassouba N, Baize S, Mateo M, Raoul H, Mely S, Subtil F, Kpamou C, Koivogui L, Traore F, Sow MS, Ayouba A, Etard JF, Delaporte E, Peeters M. A 40-Month Follow-Up of Ebola Virus Disease Survivors in Guinea (PostEbogui) Reveals Long-Term Detection of Ebola Viral Ribonucleic Acid in Semen and Breast Milk. Open Forum Infect Dis 2019; 6:ofz482. [PMID: 32128327 PMCID: PMC7047953 DOI: 10.1093/ofid/ofz482] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 11/05/2019] [Indexed: 11/23/2022] Open
Abstract
Background With the increasing frequency and impact of Ebola virus disease (EVD) outbreaks illustrated by recent epidemics, a good understanding of the extent of viral persistance or ribonucleic acid (RNA) detection in body fluids from survivors is urgently needed. Methods Ebola viral RNA shedding was studied with molecular assays in semen (n = 1368), urine (n = 1875), cervicovaginal fluid (n = 549), saliva (n = 900), breast milk (n = 168), and feces (n = 558) from EVD survivors in Guinea (PostEbogui cohort, n = 802) at a regular base period until 40 months after inclusion. Results Twenty-seven of 277 (9.8%) male survivors tested positive for Ebola RNA in at least 1 semen sample. The probability of remaining positive for Ebola RNA in semen was estimated at 93.02% and 60.12% after 3 and 6 months. Viral RNA in semen was more frequent in patients with eye pain (P = .036), joint pain (P = .047), and higher antibody levels to Ebola virus antigens (nucleoprotein [P = .001], glycoprotein [P = .05], and viral protein-40 [P = .05]). Ebola RNA was only rarely detected in the following body fluids from EVD survivors: saliva (1 of 454), urine (2 of 593), breast milk (2 of 168), cervicovaginal secretions (0 of 273), and feces (0 of 330). Ribonucleic acid was detected in breast milk 1 month after delivery but 500 days after discharge of Ebola treatment unit (ETU) in 1 woman who became pregnant 7 months after discharge from the ETU. Conclusions The frequency and potential long-term presence of viral RNA in semen confirmed that systematic prevention measures in male survivors are required. Our observation in breast milk suggests that our knowledge on viral reservoir in immune-privileged sites and its impact are still incomplete.
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Affiliation(s)
- Alpha Kabinet Keita
- TransVIHMI, IRD/INSERM/Monpellier University, Montpellier, France.,Centre de Recherche et de Formation en Infectiologie de Guinée, Université Gamal Abdel Nasser de Conakry, Conakry, Guinea
| | - Nicole Vidal
- TransVIHMI, IRD/INSERM/Monpellier University, Montpellier, France
| | - Abdoulaye Toure
- Centre de Recherche et de Formation en Infectiologie de Guinée, Université Gamal Abdel Nasser de Conakry, Conakry, Guinea.,Institut National de Santé Publique, Conakry, Guinea
| | - Mamadou Saliou Kalifa Diallo
- Centre de Recherche et de Formation en Infectiologie de Guinée, Université Gamal Abdel Nasser de Conakry, Conakry, Guinea
| | - N'fally Magassouba
- Laboratory of Virology, Conakry University, Projet de Recherche sur les Fièvres Hémorragiques en Guinée, Conakry, Guinea
| | - Sylvain Baize
- Institut Pasteur, Unit of Biology of Emerging Viral Infections - National Reference Center for Viral Hemorrhagic Fevers, Lyon, France.,Centre International de Recherche en Infectiologie, Lyon University - INSERM - ENS Lyon - CNRS, Lyon, France
| | - Mathieu Mateo
- Institut Pasteur, Unit of Biology of Emerging Viral Infections - National Reference Center for Viral Hemorrhagic Fevers, Lyon, France.,Centre International de Recherche en Infectiologie, Lyon University - INSERM - ENS Lyon - CNRS, Lyon, France
| | - Herve Raoul
- Laboratoire P4 Inserm-Jean Mérieux, Lyon, France
| | | | - Fabien Subtil
- Hospices Civils de Lyon, Service de Biostatistique, Lyon, France.,CNRS UMR 5558 Laboratoire de Biométrie et Biologie Évolutive, Équipe Biostatistique-Santé, Villeurbanne, France
| | - Cécé Kpamou
- Centre de Recherche et de Formation en Infectiologie de Guinée, Université Gamal Abdel Nasser de Conakry, Conakry, Guinea
| | | | - Falaye Traore
- Institut National de Santé Publique, Conakry, Guinea
| | - Mamadou Saliou Sow
- Centre de Recherche et de Formation en Infectiologie de Guinée, Université Gamal Abdel Nasser de Conakry, Conakry, Guinea.,Donka National Hospital, Conakry, Guinea
| | - Ahidjo Ayouba
- TransVIHMI, IRD/INSERM/Monpellier University, Montpellier, France
| | | | - Eric Delaporte
- TransVIHMI, IRD/INSERM/Monpellier University, Montpellier, France
| | - Martine Peeters
- TransVIHMI, IRD/INSERM/Monpellier University, Montpellier, France
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11
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Mateo M, Reynard S, Carnec X, Journeaux A, Baillet N, Schaeffer J, Picard C, Legras-Lachuer C, Allan R, Perthame E, Hillion KH, Pietrosemoli N, Dillies MA, Barrot L, Vallve A, Barron S, Fellmann L, Gaillard JC, Armengaud J, Carbonnelle C, Raoul H, Tangy F, Baize S. Vaccines inducing immunity to Lassa virus glycoprotein and nucleoprotein protect macaques after a single shot. Sci Transl Med 2019; 11:11/512/eaaw3163. [DOI: 10.1126/scitranslmed.aaw3163] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 04/16/2019] [Accepted: 08/02/2019] [Indexed: 01/01/2023]
Abstract
Lassa fever is a major threat in Western Africa. The large number of people living at risk for this disease calls for the development of a vaccine against Lassa virus (LASV). We generated live-attenuated LASV vaccines based on measles virus and Mopeia virus platforms and expressing different LASV antigens, with the aim to develop a vaccine able to protect after a single shot. We compared the efficacy of these vaccines against LASV in cynomolgus monkeys. The vaccines were well tolerated and protected the animals from LASV infection and disease after a single immunization but with varying efficacy. Analysis of the immune responses showed that complete protection was associated with robust secondary T cell and antibody responses against LASV. Transcriptomic and proteomic analyses showed an early activation of innate immunity and T cell priming after immunization with the most effective vaccines, with changes detectable as early as 2 days after immunization. The most efficacious vaccine candidate, a measles vector simultaneously expressing LASV glycoprotein and nucleoprotein, has been selected for further clinical evaluation.
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12
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Generous AR, Harrison OJ, Troyanovsky RB, Mateo M, Navaratnarajah CK, Donohue RC, Pfaller CK, Alekhina O, Sergeeva AP, Indra I, Thornburg T, Kochetkova I, Billadeau DD, Taylor MP, Troyanovsky SM, Honig B, Shapiro L, Cattaneo R. Trans-endocytosis elicited by nectins transfers cytoplasmic cargo, including infectious material, between cells. J Cell Sci 2019; 132:jcs235507. [PMID: 31331966 PMCID: PMC6737912 DOI: 10.1242/jcs.235507] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 07/12/2019] [Indexed: 12/13/2022] Open
Abstract
Here, we show that cells expressing the adherens junction protein nectin-1 capture nectin-4-containing membranes from the surface of adjacent cells in a trans-endocytosis process. We find that internalized nectin-1-nectin-4 complexes follow the endocytic pathway. The nectin-1 cytoplasmic tail controls transfer: its deletion prevents trans-endocytosis, while its exchange with the nectin-4 tail reverses transfer direction. Nectin-1-expressing cells acquire dye-labeled cytoplasmic proteins synchronously with nectin-4, a process most active during cell adhesion. Some cytoplasmic cargo remains functional after transfer, as demonstrated with encapsidated genomes of measles virus (MeV). This virus uses nectin-4, but not nectin-1, as a receptor. Epithelial cells expressing nectin-4, but not those expressing another MeV receptor in its place, can transfer infection to nectin-1-expressing primary neurons. Thus, this newly discovered process can move cytoplasmic cargo, including infectious material, from epithelial cells to neurons. We name the process nectin-elicited cytoplasm transfer (NECT). NECT-related trans-endocytosis processes may be exploited by pathogens to extend tropism. This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Alex R Generous
- Department of Molecular Medicine, Mayo Clinic, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
- Virology and Gene Therapy Track, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
| | - Oliver J Harrison
- Departments of Biochemistry and Molecular Biophysics, Systems Biology and Medicine, Zuckerman Mind, Brain, Behavior Institute, Columbia University, New York, NY 10032, USA
| | - Regina B Troyanovsky
- Department of Dermatology, Northwestern University, The Feinberg School of Medicine, Chicago, IL 60611
| | - Mathieu Mateo
- Department of Molecular Medicine, Mayo Clinic, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
| | - Chanakha K Navaratnarajah
- Department of Molecular Medicine, Mayo Clinic, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
| | - Ryan C Donohue
- Department of Molecular Medicine, Mayo Clinic, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
- Virology and Gene Therapy Track, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
| | - Christian K Pfaller
- Department of Molecular Medicine, Mayo Clinic, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
- Virology and Gene Therapy Track, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
| | - Olga Alekhina
- Department of Immunology, Mayo Clinic, Rochester, MN 55905, USA
| | - Alina P Sergeeva
- Departments of Biochemistry and Molecular Biophysics, Systems Biology and Medicine, Zuckerman Mind, Brain, Behavior Institute, Columbia University, New York, NY 10032, USA
- Howard Hughes Medical Institute, Columbia University, New York, NY 10032, USA
| | - Indrajyoti Indra
- Department of Dermatology, Northwestern University, The Feinberg School of Medicine, Chicago, IL 60611
| | - Theresa Thornburg
- Department of Microbiology & Immunology, Montana State University, Bozeman, MT 59717, USA
| | - Irina Kochetkova
- Department of Microbiology & Immunology, Montana State University, Bozeman, MT 59717, USA
| | | | - Matthew P Taylor
- Department of Microbiology & Immunology, Montana State University, Bozeman, MT 59717, USA
| | - Sergey M Troyanovsky
- Department of Dermatology, Northwestern University, The Feinberg School of Medicine, Chicago, IL 60611
| | - Barry Honig
- Departments of Biochemistry and Molecular Biophysics, Systems Biology and Medicine, Zuckerman Mind, Brain, Behavior Institute, Columbia University, New York, NY 10032, USA
- Howard Hughes Medical Institute, Columbia University, New York, NY 10032, USA
| | - Lawrence Shapiro
- Departments of Biochemistry and Molecular Biophysics, Systems Biology and Medicine, Zuckerman Mind, Brain, Behavior Institute, Columbia University, New York, NY 10032, USA
| | - Roberto Cattaneo
- Department of Molecular Medicine, Mayo Clinic, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
- Virology and Gene Therapy Track, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
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13
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Mateo M, Mérida M, Martin J, Fernández Á, Carmona M, Simón M. Chagas disease is here to stay. Seroprevalence of Trypanosoma cruzi at a general hospital in Madrid-Spain (non-endemic area). Int J Infect Dis 2019. [DOI: 10.1016/j.ijid.2018.11.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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14
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Mateo M, Reynard S, Baillet N, Carnec X, Fizet A, Jourdain M, Picard C, Schaeffer J, Barrot L, Barron S, Vallve A, Raoul H, Carbonnelle C, Tangy F, Baize S. One-shot immunization using a Measles/Lassa vaccine fully protects cynomolgus monkeys against Lassa fever. Int J Infect Dis 2019. [DOI: 10.1016/j.ijid.2018.11.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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15
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Reynard S, Journeaux A, Gloaguen E, Schaeffer J, Varet H, Pietrosemoli N, Mateo M, Baillet N, Laouenan C, Raoul H, Mullaert J, Baize S. Immune parameters and outcomes during Ebola virus disease. JCI Insight 2019; 4:125106. [PMID: 30626757 DOI: 10.1172/jci.insight.125106] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 11/29/2018] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND The West African Ebola virus epidemic from 2014-2016 highlighted the lack of knowledge about the pathogenicity of the virus and the factors responsible for outcome. A performant and rapid diagnosis is of crucial importance, as is overcoming the difficulty of providing high-quality patient management during such an extensive outbreak. Here, we propose to study the role of the immune mediators during Ebola virus disease and to define some molecules of importance in the outcome. METHODS Plasma from Guinean patients sampled during the outbreak were analyzed using RT-qPCR, magnetic bead assay, ELISA, and high-quality statistical analyses. We also performed a transcriptomic analysis in leukocytes samples. Therefore, we deeply characterized the immune responses involved in Ebola virus disease. RESULTS We evaluated the immune patterns depending on the outcome of the disease. Survivors presented an efficient and well-balanced immune response, whereas fatalities were characterized by an intense inflammatory response, overexpression of multiple cytokines, and a "chemokine storm." The plasma concentration of most of the parameters tested increased until death. Statistical analyses also allowed us to define a panel of markers highly predictive of outcome. CONCLUSION The immune response observed in fatalities was highly similar to that characterizing septic shock syndrome. Our results suggest that immune responses can play a major pathogenic role during severe Ebola virus infection and argue in favor of therapeutic approaches that act on both viral replication and the induction of shock syndrome. FUNDING French Ministry of Foreign Affairs, the Agence Française de Développement, and the Institut Pasteur.
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Affiliation(s)
- Stéphanie Reynard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Centre International de Recherche en Infectiologie, Université Lyon I, INSERM, CNRS, ENS Lyon, Lyon, France
| | - Alexandra Journeaux
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Centre International de Recherche en Infectiologie, Université Lyon I, INSERM, CNRS, ENS Lyon, Lyon, France
| | - Emilie Gloaguen
- Infection Antimicrobials Modelling Evolution, UMR 1137, INSERM, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Justine Schaeffer
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Centre International de Recherche en Infectiologie, Université Lyon I, INSERM, CNRS, ENS Lyon, Lyon, France
| | - Hugo Varet
- Institut Pasteur, Hub Bioinformatique et Biostatistique, Centre de Bioinformatique, Biostatistique et Biologie Intégrative, C3BI, USR 3756 IP CNRS, Paris, France
| | - Natalia Pietrosemoli
- Institut Pasteur, Hub Bioinformatique et Biostatistique, Centre de Bioinformatique, Biostatistique et Biologie Intégrative, C3BI, USR 3756 IP CNRS, Paris, France
| | - Mathieu Mateo
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Centre International de Recherche en Infectiologie, Université Lyon I, INSERM, CNRS, ENS Lyon, Lyon, France
| | - Nicolas Baillet
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Centre International de Recherche en Infectiologie, Université Lyon I, INSERM, CNRS, ENS Lyon, Lyon, France
| | - Cédric Laouenan
- Infection Antimicrobials Modelling Evolution, UMR 1137, INSERM, Université Paris Diderot, Sorbonne Paris Cité, Paris, France.,Assistance Publique - Hôpitaux de Paris, Hôpital Bichat Claude Bernard, Paris, France
| | - Hervé Raoul
- Laboratoire P4 Jean Mérieux-INSERM, INSERM, Lyon, France
| | - Jimmy Mullaert
- Infection Antimicrobials Modelling Evolution, UMR 1137, INSERM, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Sylvain Baize
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Centre International de Recherche en Infectiologie, Université Lyon I, INSERM, CNRS, ENS Lyon, Lyon, France
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16
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Mateo M, Álvarez R, Cobo C, Pallas JR, López AM, Gaite L. Telemedicine: contributions, difficulties and key factors for implementation in the prison setting. Rev esp sanid penit 2019. [DOI: 10.4321/s1575-06202019000200005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Mateo M, Álvarez R, Cobo C, Pallas JR, López AM, Gaite L. Telemedicine: contributions, difficulties and key factors for implementation in the prison setting. Rev Esp Sanid Penit 2019; 21:95-105. [PMID: 31642860 PMCID: PMC6813662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 04/15/2019] [Indexed: 11/12/2022]
Abstract
Information and communication technologies are transforming the way we understand health, via a hyper-connected world in which patients, professionals and society take on new challenges and roles. This change is creating an ecosystem called connected health, in which telemedicine acquires special importance when distance (not only geographical), is a critical factor. It can respond to financial, social or safety needs or questions of dignity, as is the case with prisoners when they are transferred handcuffed and under custody to hospitals. Bringing health services closer to patients who cannot autonomously travel contributes towards humanising healthcare. Tele-consultations, long-distance encounters between patients and health professionals, reduce the direct and social costs inherent to habitual clinical practice and are very highly valued by patients in prison. Despite its potential benefits in the prison setting, the implementation of telemedicine in Spain continues to be scarce and irregular, which, amongst other things, is due to a lack of awareness of this healthcare practice, the severe shortage of resources currently endemic to the prison health service system and the lack of interoperability solutions for clinical information between the healthcare administration and the prison health services, which unfortunately continue to depend on an organisation outside the healthcare ambit (the Ministry of Home Affairs), despite the legal provisions requiring them to be fully integrated into regional health services. The SARA (Administration Applications and Networks Systems) Network and the Reúnete© Service offer solid, secure, free technology is available to all prisons, to set in motion telemedicine programs at a nationwide level.
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Affiliation(s)
- M Mateo
- Health Centre of “José Hierro” Social Integration Unit. Santander
| | - R Álvarez
- Health Centre of “José Hierro” Social Integration Unit. Santander
| | - C Cobo
- El Dueso Prison Health Centre. Santoña. Cantabria
| | - J R Pallas
- El Dueso Prison Health Centre. Santoña. Cantabria
| | - A M López
- El Dueso Prison Health Centre. Santoña. Cantabria
| | - L Gaite
- Evaluation Unit. Psychiatry Service. Marqués de Valdecilla University Hospital. CIBERSAM
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18
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Schaeffer J, Carnec X, Reynard S, Mateo M, Picard C, Pietrosemoli N, Dillies MA, Baize S. Lassa virus activates myeloid dendritic cells but suppresses their ability to stimulate T cells. PLoS Pathog 2018; 14:e1007430. [PMID: 30419076 PMCID: PMC6258464 DOI: 10.1371/journal.ppat.1007430] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 11/26/2018] [Accepted: 10/23/2018] [Indexed: 01/09/2023] Open
Abstract
Lassa virus (LASV) is responsible for a viral hemorrhagic fever in humans and the death of 3,000 to 5,000 people every year. The immune response to LASV is poorly understood, but type I interferon (IFN-I) and T-cell responses appear to be critical for the host. We studied the response of myeloid dendritic cells (mDC) to LASV, as mDCs are involved in both IFN-I production and T-cell activation. We compared the response of primary human mDCs to LASV and Mopeia virus (MOPV), which is similar to LASV, but non-pathogenic. We showed that mDCs produced substantial amounts of IFN-I in response to both LASV and MOPV. However, only MOPV-infected mDCs were able to activate T cells. More surprisingly, coculture with T cells completely inhibited the activation of LASV-infected mDCs. These differences between LASV and MOPV were mostly due to the LASV nucleoprotein, which has major immunosuppressive properties, but the glycoprotein was also involved. Overall, these results suggest that mDCs may be important for the global response to LASV and play a role in the outcome of Lassa fever. Lassa fever is a viral hemorrhagic fever and a major public health issue in West Africa. Lassa virus, the causative agent of Lassa fever, is listed by the World Health Organization as one of the emerging pathogens likely to cause severe outbreaks in the near future. Indeed, there is currently no vaccine and no treatment against Lassa virus. Determinants of Lassa virus high pathogenicity are not completely understood. However, it has been shown that rapid type I interferon response and efficient T cell response were critical to survive Lassa fever. Dendritic cells are at the crossroads of innate and adaptive immunity. Their direct response to viral infection includes type I interferon production. They can also present viral antigens, initiating the T cell responses. We decided to investigate how dendritic cells respond to Lassa virus to evaluate their importance in the global immune response. We showed that primary human myeloid dendritic cells are activated by Lassa virus infection, and produce type I interferon. However, Lassa virus-infected dendritic cells were not able to activate T cells. We also elucidated the roles of viral proteins in the modulation of dendritic cell responses.
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Affiliation(s)
- Justine Schaeffer
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur; Centre International de Recherche en Infectiologie (INSERM, CNRS, ENS Lyon, Université Lyon I), Lyon, France
| | - Xavier Carnec
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur; Centre International de Recherche en Infectiologie (INSERM, CNRS, ENS Lyon, Université Lyon I), Lyon, France
| | - Stéphanie Reynard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur; Centre International de Recherche en Infectiologie (INSERM, CNRS, ENS Lyon, Université Lyon I), Lyon, France
| | - Mathieu Mateo
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur; Centre International de Recherche en Infectiologie (INSERM, CNRS, ENS Lyon, Université Lyon I), Lyon, France
| | - Caroline Picard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur; Centre International de Recherche en Infectiologie (INSERM, CNRS, ENS Lyon, Université Lyon I), Lyon, France
| | - Natalia Pietrosemoli
- Bioinformatics and Biostatistics Hub, Centre de Bioinformatique Biostatistique et Biologie Intégrative (C3BI, USR 3756, IP CNRS), Institut Pasteur, Paris, France
| | - Marie-Agnès Dillies
- Bioinformatics and Biostatistics Hub, Centre de Bioinformatique Biostatistique et Biologie Intégrative (C3BI, USR 3756, IP CNRS), Institut Pasteur, Paris, France
| | - Sylvain Baize
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur; Centre International de Recherche en Infectiologie (INSERM, CNRS, ENS Lyon, Université Lyon I), Lyon, France
- * E-mail:
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19
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Carnec X, Mateo M, Page A, Reynard S, Hortion J, Picard C, Yekwa E, Barrot L, Barron S, Vallve A, Raoul H, Carbonnelle C, Ferron F, Baize S. A Vaccine Platform against Arenaviruses Based on a Recombinant Hyperattenuated Mopeia Virus Expressing Heterologous Glycoproteins. J Virol 2018; 92:e02230-17. [PMID: 29593043 PMCID: PMC5974477 DOI: 10.1128/jvi.02230-17] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 03/22/2018] [Indexed: 11/20/2022] Open
Abstract
Several Old World and New World arenaviruses are responsible for severe endemic and epidemic hemorrhagic fevers, whereas other members of the Arenaviridae family are nonpathogenic. To date, no approved vaccines, antivirals, or specific treatments are available, except for Junín virus. However, protection of nonhuman primates against Lassa fever virus (LASV) is possible through the inoculation of the closely related but nonpathogenic Mopeia virus (MOPV) before challenge with LASV. We reasoned that this virus, modified by using reverse genetics, would represent the basis for the generation of a vaccine platform against LASV and other pathogenic arenaviruses. After showing evidence of exoribonuclease (ExoN) activity in NP of MOPV, we found that this activity was essential for multiplication in antigen-presenting cells. The introduction of multiple mutations in the ExoN site of MOPV NP generated a hyperattenuated strain (MOPVExoN6b) that is (i) genetically stable over passages, (ii) has increased immunogenic properties compared to those of MOPV, and (iii) still promotes a strong type I interferon (IFN) response. MOPVExoN6b was further modified to harbor the envelope glycoproteins of heterologous pathogenic arenaviruses, such as LASV or Lujo, Machupo, Guanarito, Chapare, or Sabia virus in order to broaden specific antigenicity while preserving the hyperattenuated characteristics of the parental strain. Our MOPV-based vaccine candidate for LASV, MOPEVACLASV, was used in a one-shot immunization assay in nonhuman primates and fully protected them from a lethal challenge with LASV. Thus, our hyperattenuated strain of MOPV constitutes a promising new live-attenuated vaccine platform to immunize against several, if not all, pathogenic arenaviruses.IMPORTANCE Arenaviruses are emerging pathogens transmitted to humans by rodents and responsible for endemic and epidemic hemorrhagic fevers of global concern. Nonspecific symptoms associated with the onset of infection make these viruses difficult to distinguish from other endemic pathogens. Moreover, the unavailability of rapid diagnosis in the field delays the identification of the virus and early care for treatment and favors spreading. The vaccination of exposed populations would be of great help to decrease morbidity and human-to-human transmission. Using reverse genetics, we generated a vaccine platform for pathogenic arenaviruses based on a modified and hyperattenuated strain of the nonpathogenic Mopeia virus and showed that the Lassa virus candidate fully protected nonhuman primates from a lethal challenge. These results showed that a rationally designed recombinant MOPV-based vaccine is safe, immunogenic, and efficacious in nonhuman primates.
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Affiliation(s)
- Xavier Carnec
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Centre International de Recherche en Infectiologie (INSERM, CNRS, ENS Lyon, Université Lyon I), Lyon, France
| | - Mathieu Mateo
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Centre International de Recherche en Infectiologie (INSERM, CNRS, ENS Lyon, Université Lyon I), Lyon, France
| | - Audrey Page
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Centre International de Recherche en Infectiologie (INSERM, CNRS, ENS Lyon, Université Lyon I), Lyon, France
| | - Stéphanie Reynard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Centre International de Recherche en Infectiologie (INSERM, CNRS, ENS Lyon, Université Lyon I), Lyon, France
| | - Jimmy Hortion
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Centre International de Recherche en Infectiologie (INSERM, CNRS, ENS Lyon, Université Lyon I), Lyon, France
| | - Caroline Picard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Centre International de Recherche en Infectiologie (INSERM, CNRS, ENS Lyon, Université Lyon I), Lyon, France
| | - Elsie Yekwa
- CNRS, Architecture et Fonction des Macromolécules Biologiques UMR 7257, Aix-Marseille Université, Marseille, France
| | - Laura Barrot
- Laboratoire P4 Jean Mérieux-INSERM, US003, INSERM, Lyon, France
| | - Stéphane Barron
- Laboratoire P4 Jean Mérieux-INSERM, US003, INSERM, Lyon, France
| | - Audrey Vallve
- Laboratoire P4 Jean Mérieux-INSERM, US003, INSERM, Lyon, France
| | - Hervé Raoul
- Laboratoire P4 Jean Mérieux-INSERM, US003, INSERM, Lyon, France
| | | | - François Ferron
- CNRS, Architecture et Fonction des Macromolécules Biologiques UMR 7257, Aix-Marseille Université, Marseille, France
| | - Sylvain Baize
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Centre International de Recherche en Infectiologie (INSERM, CNRS, ENS Lyon, Université Lyon I), Lyon, France
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20
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Vernet MA, Reynard S, Fizet A, Schaeffer J, Pannetier D, Guedj J, Rives M, Georges N, Garcia-Bonnet N, Sylla AI, Grovogui P, Kerherve JY, Savio C, Savio-Coste S, de Séverac ML, Zloczewski P, Linares S, Harouna S, Abdoul BM, Petitjean F, Samake N, Shepherd S, Kinda M, Koundouno FR, Joxe L, Mateo M, Lecine P, Page A, Tchamdja TM, Schoenhals M, Barbe S, Simon B, Tran-Minh T, Longuet C, L'Hériteau F, Baize S. Clinical, virological, and biological parameters associated with outcomes of Ebola virus infection in Macenta, Guinea. JCI Insight 2017; 2:e88864. [PMID: 28352651 DOI: 10.1172/jci.insight.88864] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND. The pathogenesis of Ebola virus (EBOV) disease (EVD) is poorly characterized. The establishment of well-equipped diagnostic laboratories close to Ebola treatment centers (ETCs) has made it possible to obtain relevant virological and biological data during the course of EVD and to assess their association with the clinical course and different outcomes of the disease. METHODS. We were responsible for diagnosing EBOV infection in patients admitted to two ETCs in forested areas of Guinea. The pattern of clinical signs was recorded, and an etiological diagnosis was established by RT-PCR for EBOV infection or a rapid test for malaria and typhoid fever. Biochemical analyses were also performed. RESULTS. We handled samples from 168 patients between November 29, 2014, and January 31, 2015; 97 patients were found to be infected with EBOV, with Plasmodium falciparum coinfection in 18%. Overall mortality for EVD cases was 58%, rising to 86% if P. falciparum was also present. Viral load was higher in fatal cases of EVD than in survivors, and fatal cases were associated with higher aspartate aminotransferase (AST) and alanine aminotransferase (ALT), C-reactive protein (CRP), and IL-6 levels. Furthermore, regardless of outcome, EVD was characterized by higher creatine kinase (CPK), amylase, and creatinine levels than in febrile patients without EVD, with higher blood urea nitrogen (BUN) levels in fatal cases of EVD only. CONCLUSION. These findings suggest that a high viral load at admission is a marker of poor EVD prognosis. In addition, high AST, ALT, CRP, and IL-6 levels are associated with a fatal outcome of EVD. Damage to the liver and other tissues, with massive rhabdomyolysis and, probably, acute pancreatitis, is associated with EVD and correlated with disease severity. Finally, biochemical analyses provide substantial added value at ETCs, making it possible to improve supportive rehydration and symptomatic care for patients. FUNDING. The French Ministry of Foreign Affairs, the Agence Française de Développement, and Institut Pasteur.
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Affiliation(s)
| | - Stéphanie Reynard
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie, Université de Lyon, INSERM, U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon, France
| | - Alexandra Fizet
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie, Université de Lyon, INSERM, U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon, France
| | - Justine Schaeffer
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie, Université de Lyon, INSERM, U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon, France
| | | | - Jeremie Guedj
- INSERM, Infection, Antimicrobials, Modelling, Evolution, UMR 1137, Université Paris Diderot, Paris, France.,Assistance Publique-Hôpitaux de Paris, Hôpital Bichat Claude Bernard, Paris, France
| | - Max Rives
- Etablissement de Préparation et de Réponse aux Urgences Sanitaires, Ministère de la Santé, Paris, France
| | - Nadia Georges
- Etablissement de Préparation et de Réponse aux Urgences Sanitaires, Ministère de la Santé, Paris, France
| | - Nathalie Garcia-Bonnet
- Etablissement de Préparation et de Réponse aux Urgences Sanitaires, Ministère de la Santé, Paris, France
| | | | - Péma Grovogui
- Ministère de la Santé, Conakry, République de Guinée
| | - Jean-Yves Kerherve
- Etablissement de Préparation et de Réponse aux Urgences Sanitaires, Ministère de la Santé, Paris, France
| | - Christophe Savio
- Etablissement de Préparation et de Réponse aux Urgences Sanitaires, Ministère de la Santé, Paris, France
| | - Sylvie Savio-Coste
- Etablissement de Préparation et de Réponse aux Urgences Sanitaires, Ministère de la Santé, Paris, France
| | - Marie-Laure de Séverac
- Etablissement de Préparation et de Réponse aux Urgences Sanitaires, Ministère de la Santé, Paris, France
| | - Philippe Zloczewski
- Etablissement de Préparation et de Réponse aux Urgences Sanitaires, Ministère de la Santé, Paris, France
| | - Sandrine Linares
- Etablissement de Préparation et de Réponse aux Urgences Sanitaires, Ministère de la Santé, Paris, France
| | - Souley Harouna
- Alliance for International Medical Action, Montreuil, France
| | | | | | - Nenefing Samake
- Alliance for International Medical Action, Montreuil, France
| | - Susan Shepherd
- Alliance for International Medical Action, Montreuil, France
| | - Moumouni Kinda
- Alliance for International Medical Action, Montreuil, France
| | | | - Ludovic Joxe
- Alliance for International Medical Action, Montreuil, France
| | - Mathieu Mateo
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie, Université de Lyon, INSERM, U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon, France
| | | | - Audrey Page
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie, Université de Lyon, INSERM, U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon, France
| | - Tang Maleki Tchamdja
- Etablissement de Préparation et de Réponse aux Urgences Sanitaires, Ministère de la Santé, Paris, France
| | | | - Solenne Barbe
- Alliance for International Medical Action, Montreuil, France
| | | | | | | | | | - Sylvain Baize
- Unité de Biologie des Infections Virales Emergentes, Institut Pasteur, Lyon, France.,Centre International de Recherche en Infectiologie, Université de Lyon, INSERM, U1111, Ecole Normale Supérieure de Lyon, Université Lyon 1, CNRS UMR5308, Lyon, France
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Couñago F, Del Cerro E, Díaz-Gavela A, Marcos F, Recio M, Sanz-Rosa D, Thuissard I, Olaciregui K, Castro-Novais J, Carrascoso J, Hayoun C, Murillo R, Rodriguez-Luna J, Bueno C, Hornedo J, Perez-Carrion R, Martinez de Vega V, Mateo M. PO-0736: Tumour staging using MRI in prostate cancer: improvement of treatment decisions for radiotherapy. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)31986-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
The epithelium is a highly organized type of animal tissue. Except for blood and lymph vessels, epithelial cells cover the body, line its cavities in single or stratified layers and support exchange between compartments. In addition, epithelia offer to the body a barrier to pathogen invasion. To transit through or to replicate in epithelia, viruses have to face several obstacles, starting from cilia and glycocalyx where they can be neutralized by secreted immunoglobulins. Tight junctions and adherens junctions also prevent viruses to cross the epithelial barrier. However, viruses have developed multiple strategies to blaze their path through the epithelium by utilizing components of cell–cell adhesion structures as receptors. In this Commentary, we discuss how viruses take advantage of the apical junction complex to spread. Whereas some viruses quickly disrupt epithelium integrity, others carefully preserve it and use cell adhesion proteins and their cytoskeletal connections to rapidly spread laterally. This is exemplified by the hidden transmission of enveloped viruses that use nectins as receptors. Finally, several viruses that replicate preferentially in cancer cells are currently used as experimental cancer therapeutics. Remarkably, these viruses use cell adhesion molecules as receptors, probably because--to reach tumors and metastases--ncolytic viruses must efficiently traverse or break epithelia.
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Reynard O, Mateo M. Characterization of the Unconventional Secretion of the Ebola Matrix Protein VP40. Methods Mol Biol 2016; 1459:205-213. [PMID: 27665561 DOI: 10.1007/978-1-4939-3804-9_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
While most secreted proteins use the classical endoplasmic reticulum (ER)-Golgi secretion pathway to reach the extracellular medium, a few proteins are secreted through unconventional secretary pathways. Viral proteins can be secreted through unconventional secretion pathways. Here, we describe how we have recently demonstrated that the Ebola virus (EBOV) matrix protein VP40 is released from transfected and infected cells in a soluble form through an unconventional secretion pathway.
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Affiliation(s)
- Olivier Reynard
- Inserm U1111, Université Claude Bernard Lyon 1, International Center for Infectiology Research (CIRI), 21 avenue, Tony Gamler, 69364, USA.
| | - Mathieu Mateo
- UBIVE, Institut Pasteur, International Center for Infectiology Research (CIRI), Paris, France
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Naeck R, Elias A, D'amore D, Mateo M, Suppini J, Rabec C, Drouot X, Meurice J, Paquereau J, Ginoux J. Mathematical modeling of sleep fragmentation diagnosis. Sleep Med 2015. [DOI: 10.1016/j.sleep.2015.02.1493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Singh BK, Hornick AL, Krishnamurthy S, Locke AC, Mendoza CA, Mateo M, Miller-Hunt CL, Cattaneo R, Sinn PL. The Nectin-4/Afadin Protein Complex and Intercellular Membrane Pores Contribute to Rapid Spread of Measles Virus in Primary Human Airway Epithelia. J Virol 2015; 89:7089-96. [PMID: 25926640 PMCID: PMC4473566 DOI: 10.1128/jvi.00821-15] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 04/21/2015] [Indexed: 12/12/2022] Open
Abstract
UNLABELLED The discovery that measles virus (MV) uses the adherens junction protein nectin-4 as its epithelial receptor provides a new vantage point from which to characterize its rapid spread in the airway epithelium. We show here that in well-differentiated primary cultures of airway epithelial cells from human donors (HAE), MV infectious centers form rapidly and become larger than those of other respiratory pathogens: human respiratory syncytial virus, parainfluenza virus 5, and Sendai virus. While visible syncytia do not form after MV infection of HAE, the cytoplasm of an infected cell suddenly flows into an adjacent cell, as visualized through wild-type MV-expressed cytoplasmic green fluorescent protein (GFP). High-resolution video microscopy documents that GFP flows through openings that form on the lateral surfaces between columnar epithelial cells. To assess the relevance of the protein afadin, which connects nectin-4 to the actin cytoskeleton, we knocked down its mRNA. This resulted in more-limited infectious-center formation. We also generated a nectin-4 mutant without the afadin-binding site in its cytoplasmic tail. This mutant was less effective than wild-type human nectin-4 at promoting MV infection in primary cultures of porcine airway epithelia. Thus, in airway epithelial cells, MV spread requires the nectin-4/afadin complex and is based on cytoplasm transfer between columnar cells. Since the viral membrane fusion apparatus may open the passages that allow cytoplasm transfer, we refer to them as intercellular membrane pores. Virus-induced intercellular pores may contribute to extremely efficient measles contagion by promoting the rapid spread of the virus through the upper respiratory epithelium. IMPORTANCE Measles virus (MV), while targeted for eradication, still causes about 120,000 deaths per year worldwide. The recent reemergence of measles in insufficiently vaccinated populations in Europe and North America reminds us that measles is extremely contagious, but the processes favoring its spread in the respiratory epithelium remain poorly defined. Here we characterize wild-type MV spread in well-differentiated primary cultures of human airway epithelial cells. We observed that viral infection promotes the flow of cytoplasmic contents from infected to proximal uninfected columnar epithelial cells. Cytoplasm flows through openings that form on the lateral surfaces. Infectious-center growth is facilitated by afadin, a protein connecting the adherens junction and the actin cytoskeleton. The viral fusion apparatus may open intercellular pores, and the cytoskeleton may stabilize them. Rapid homogenization of cytoplasmic contents in epithelial infectious centers may favor rapid spread and contribute to the extremely contagious nature of measles.
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Affiliation(s)
- Brajesh K Singh
- Department of Pediatrics, Carver College of Medicine, The University of Iowa, Iowa City, Iowa, USA
| | - Andrew L Hornick
- Department of Pediatrics, Carver College of Medicine, The University of Iowa, Iowa City, Iowa, USA
| | - Sateesh Krishnamurthy
- Department of Pediatrics, Carver College of Medicine, The University of Iowa, Iowa City, Iowa, USA
| | - Anna C Locke
- Department of Pediatrics, Carver College of Medicine, The University of Iowa, Iowa City, Iowa, USA
| | - Crystal A Mendoza
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Mathieu Mateo
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Catherine L Miller-Hunt
- Department of Pediatrics, Carver College of Medicine, The University of Iowa, Iowa City, Iowa, USA
| | - Roberto Cattaneo
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Patrick L Sinn
- Department of Pediatrics, Carver College of Medicine, The University of Iowa, Iowa City, Iowa, USA
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Mateo M, Navaratnarajah CK, Willenbring RC, Maroun JW, Iankov I, Lopez M, Sinn PL, Cattaneo R. Different roles of the three loops forming the adhesive interface of nectin-4 in measles virus binding and cell entry, nectin-4 homodimerization, and heterodimerization with nectin-1. J Virol 2014; 88:14161-71. [PMID: 25275122 PMCID: PMC4249131 DOI: 10.1128/jvi.02379-14] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 09/23/2014] [Indexed: 12/20/2022] Open
Abstract
UNLABELLED Many viruses utilize cell adhesion molecules of the immunoglobulin superfamily as receptors. In particular, viruses of different classes exploit nectins. The large DNA viruses, herpes simplex and pseudorabies viruses, use ubiquitous nectins 1 and 2. The negative-strand RNA virus measles virus (MeV) uses tissue-specific nectin-4, and the positive-strand RNA virus poliovirus uses nectin-like 5 (necl-5), also known as poliovirus receptor. These viruses contact the BC, C'C", and FG loops on the upper tip of their receptor's most membrane-distal domain. This location corresponds to the newly defined canonical adhesive interface of nectins, but how viruses utilize this interface has remained unclear. Here we show that the same key residues in the BC and FG loops of nectin-4 govern binding to the MeV attachment protein hemagglutinin (H) and cell entry, nectin-4 homodimerization, and heterodimerization with nectin-1. On the other hand, residues in the C'C" loop necessary for homo- and heterotypic interactions are dispensable for MeV-induced fusion and cell entry. Remarkably, the C'C" loop governs dissociation of the nectin-4 and H ectodomains. We provide formal proof that H can interfere with the formation of stable nectin-1/nectin-4 heterodimers. Finally, while developing an alternative model to study MeV spread, we observed that polarized primary pig airway epithelial sheets cannot be infected. We show that a single amino acid variant in the BC loop of pig nectin-4 fully accounts for restricted MeV entry. Thus, the three loops forming the adhesive interface of nectin-4 have different roles in supporting MeV H association and dissociation and MeV-induced fusion. IMPORTANCE Different viruses utilize nectins as receptors. Nectins are immunoglobulin superfamily glycoproteins that mediate cell-cell adhesion in vertebrate tissues. They interact through an adhesive interface located at the top of their membrane-distal domain. How viruses utilize the three loops forming this interface has remained unclear. We demonstrate that while nectin-nectin interactions require residues in all three loops, the association of nectin-4 with the measles virus hemagglutinin requires only the BC and FG loops. However, we discovered that residues in the C'C" loop modulate the dissociation of nectin-4 from the viral hemagglutinin. Analogous mechanisms may support cell entry of other viruses that utilize nectins or other cell adhesion molecules of the immunoglobulin superfamily as receptors.
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Affiliation(s)
- Mathieu Mateo
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Robin C Willenbring
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA Virology and Gene Therapy track, Mayo Graduate School, Rochester, Minnesota, USA
| | - Justin W Maroun
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA Virology and Gene Therapy track, Mayo Graduate School, Rochester, Minnesota, USA
| | - Ianko Iankov
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Marc Lopez
- INSERM, UMR1068/CRCM, Institut Paoli-Calmettes and University of Aix-Marseille, Marseille, France
| | - Patrick L Sinn
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, USA
| | - Roberto Cattaneo
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA Virology and Gene Therapy track, Mayo Graduate School, Rochester, Minnesota, USA
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Mateo M, Navaratnarajah CK, Cattaneo R. Structural basis of efficient contagion: measles variations on a theme by parainfluenza viruses. Curr Opin Virol 2014; 5:16-23. [PMID: 24492202 PMCID: PMC4028398 DOI: 10.1016/j.coviro.2014.01.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 11/26/2013] [Accepted: 01/08/2014] [Indexed: 11/19/2022]
Abstract
A quartet of attachment proteins and a trio of fusion protein subunits play the cell entry concert of parainfluenza viruses. While many of these viruses bind sialic acid to enter cells, wild type measles binds exclusively two tissue-specific proteins, the lymphatic receptor signaling lymphocytic activation molecule (SLAM), and the epithelial receptor nectin-4. SLAM binds near the stalk-head junction of the hemagglutinin. Nectin-4 binds a hydrophobic groove located between blades 4 and 5 of the hemagglutinin β-propeller head. The mutated vaccine strain hemagglutinin binds in addition the ubiquitous protein CD46, which explains attenuation. The measles virus entry concert has four movements. Andante misterioso: the virus takes over the immune system. Allegro con brio: it rapidly spreads in the upper airway's epithelia. 'Targeting' fugue: the versatile orchestra takes off. Presto furioso: the virus exits the host with thunder. Be careful: music is contagious.
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MESH Headings
- Animals
- Antigens, CD/chemistry
- Antigens, CD/genetics
- Antigens, CD/metabolism
- Cell Adhesion Molecules/chemistry
- Cell Adhesion Molecules/genetics
- Cell Adhesion Molecules/metabolism
- Hemagglutinins, Viral/chemistry
- Hemagglutinins, Viral/genetics
- Hemagglutinins, Viral/metabolism
- Humans
- Measles/genetics
- Measles/metabolism
- Measles/virology
- Measles virus/chemistry
- Measles virus/genetics
- Measles virus/metabolism
- Protein Binding
- Receptors, Cell Surface/chemistry
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/metabolism
- Receptors, Virus/chemistry
- Receptors, Virus/genetics
- Receptors, Virus/metabolism
- Signaling Lymphocytic Activation Molecule Family Member 1
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Affiliation(s)
- Mathieu Mateo
- Department of Molecular Medicine, Mayo Clinic, and Virology and Gene Therapy Track, Mayo Graduate School, 200 First Street SW, Rochester, MN 55905, USA
| | - Chanakha K Navaratnarajah
- Department of Molecular Medicine, Mayo Clinic, and Virology and Gene Therapy Track, Mayo Graduate School, 200 First Street SW, Rochester, MN 55905, USA
| | - Roberto Cattaneo
- Department of Molecular Medicine, Mayo Clinic, and Virology and Gene Therapy Track, Mayo Graduate School, 200 First Street SW, Rochester, MN 55905, USA.
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Page A, Volchkova V, Reid S, Mateo M, Bagnaud-Baule A, Nemirov K, Shurtleff A, Lawrence P, Reynard O, Ottmann M, Lotteau V, Biswal S, Thimmulappa R, Bavari S, Volchkov V. Marburgvirus Hijacks Nrf2-Dependent Pathway by Targeting Nrf2-Negative Regulator Keap1. Cell Rep 2014; 6:1026-1036. [DOI: 10.1016/j.celrep.2014.02.027] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 12/13/2013] [Accepted: 02/18/2014] [Indexed: 12/26/2022] Open
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Mateo M, Navaratnarajah CK, Syed S, Cattaneo R. The measles virus hemagglutinin β-propeller head β4-β5 hydrophobic groove governs functional interactions with nectin-4 and CD46 but not those with the signaling lymphocytic activation molecule. J Virol 2013; 87:9208-16. [PMID: 23760251 PMCID: PMC3754078 DOI: 10.1128/jvi.01210-13] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 06/09/2013] [Indexed: 12/12/2022] Open
Abstract
Wild-type measles virus (MV) strains use the signaling lymphocytic activation molecule (SLAM; CD150) and the adherens junction protein nectin-4 (poliovirus receptor-like 4 [PVRL4]) as receptors. Vaccine MV strains have adapted to use ubiquitous membrane cofactor protein (MCP; CD46) in addition. Recently solved cocrystal structures of the MV attachment protein (hemagglutinin [H]) with each receptor indicate that all three bind close to a hydrophobic groove located between blades 4 and 5 (β4-β5 groove) of the H protein β-propeller head. We used this structural information to focus our analysis of the functional footprints of the three receptors on vaccine MV H. We mutagenized this protein and tested the ability of individual mutants to support cell fusion through each receptor. The results highlighted a strong overlap between the functional footprints of nectin-4 and CD46 but not those of SLAM. A soluble form of nectin-4 abolished vaccine MV entry in nectin-4- and CD46-expressing cells but only reduced entry through SLAM. Analyses of the binding kinetics of an H mutant with the three receptors revealed that a single substitution in the β4-β5 groove drastically reduced nectin-4 and CD46 binding while minimally altering SLAM binding. We also generated recombinant viruses and analyzed their infections in cells expressing individual receptors. Introduction of a single substitution into the hydrophobic pocket affected entry through both nectin-4 and CD46 but not through SLAM. Thus, while nectin-4 and CD46 interact functionally with the H protein β4-β5 hydrophobic groove, SLAM merely covers it. This has implications for vaccine and antiviral strategies.
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Affiliation(s)
- Mathieu Mateo
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Chanakha K. Navaratnarajah
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA
- Virology and Gene Therapy Track, Mayo Graduate School, Rochester, Minnesota, USA
| | - Sabriya Syed
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Roberto Cattaneo
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA
- Virology and Gene Therapy Track, Mayo Graduate School, Rochester, Minnesota, USA
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Mateo M, Pérez-Carramiñana C, Chinchón S. El amianto en la edificación: variedades y riesgos asociados a las labores de deconstrucción. ACTA ACUST UNITED AC 2013. [DOI: 10.3989/ic.11.118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Alonso-García J, Catelan M, Mateo M, Minniti D. The inner Galactic globular clusters. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20134302005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Maestre JR, Aguilar L, Mateo M, Gimenez MJ, Mendez ML, Alou L, Granizo JJ, Prieto J. In vitro interference of tigecycline at subinhibitory concentrations on biofilm development by Enterococcus faecalis. J Antimicrob Chemother 2012; 67:1155-8. [DOI: 10.1093/jac/dks014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Reynard O, Reid SP, Page A, Mateo M, Alazard-Dany N, Raoul H, Basler CF, Volchkov VE. Unconventional secretion of Ebola virus matrix protein VP40. J Infect Dis 2011; 204 Suppl 3:S833-9. [PMID: 21987759 DOI: 10.1093/infdis/jir305] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The Ebola virus matrix protein VP40 plays an essential role in virus assembly and budding. In this study we reveal that transient VP40 expression results in the release into the culture medium of substantial amounts of soluble monomeric VP40 in addition to the release of virus-like particles containing an oligomeric form of this protein as previously described. We show that VP40 secretion is endoplasmic reticulum/Golgi-independent and is not associated with cell death. Soluble VP40 was observed during Ebola virus infection of cells and was also found in the serum of virus-infected animals albeit in lower amounts. Unconventional secretion of VP40 may therefore play a role in Ebola virus pathogenicity.
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Affiliation(s)
- Olivier Reynard
- Filovirus Laboratory, Inserm U758, Human Virology Department, Université de Lyon, Ecole Normale Supérieure de Lyon, Lyon, France
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35
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Reynard O, Nemirov K, Page A, Mateo M, Raoul H, Weissenhorn W, Volchkov VE. Conserved proline-rich region of Ebola virus matrix protein VP40 is essential for plasma membrane targeting and virus-like particle release. J Infect Dis 2011; 204 Suppl 3:S884-91. [PMID: 21987765 DOI: 10.1093/infdis/jir359] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The matrix protein VP40 is essential for Ebola virus (EBOV) and Marburg virus assembly and budding at the plasma membrane. In this study we have investigated the effect of single amino acid substitutions in a conserved proline-rich region of the EBOV VP40 located in the carboxy-terminal part of the protein. We demonstrate that substitutions within this region result in an alteration of intracellular VP40 localization and also cause a reduction or a complete block of virus-like particle budding, a benchmark of VP40 function. Furthermore, some mutated VP40s revealed an enhanced binding with cellular Sec24C, a part of the coat protein complex II (COPII) vesicular transport system. Analysis of the 3-dimensional structure of VP40 revealed the spatial proximity of the proline-rich region and an earlier identified site of interaction with Sec24C, thus allowing us to hypothesize that the altered intracellular localization of the VP40 mutants is a consequence of defects in their interaction with COPII-mediated vesicular transport.
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Affiliation(s)
- Olivier Reynard
- Filovirus Laboratory, INSERM U758, Human Virology Department, Claude Bernard Université Lyon 1, Ecole Normale Supérieure de Lyon, Lyon, France
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Mateo M, Carbonnelle C, Reynard O, Kolesnikova L, Nemirov K, Page A, Volchkova VA, Volchkov VE. VP24 is a molecular determinant of Ebola virus virulence in guinea pigs. J Infect Dis 2011; 204 Suppl 3:S1011-20. [PMID: 21987737 DOI: 10.1093/infdis/jir338] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In sharp contrast to human and nonhuman primates, guinea pigs and some other mammals resist Ebola virus (EBOV) replication and do not develop illness upon virus inoculation. However, serial passaging of EBOV in guinea pigs results in a selection of variants with high pathogenicity. In this report, using a reverse genetics approach, we demonstrate that this dramatic increase in EBOV pathogenicity is associated with amino acid substitutions in the structural protein VP24. We show that although replication of recombinant EBOV carrying wild-type VP24 is impaired in primary peritoneal guinea pig macrophages and in the liver of infected animals, the substitutions in VP24 allow EBOV to replicate in guinea pig macrophages and spread in the liver of infected animals. Furthermore, we demonstrate that both VP24/wild type and the guinea pig-adapted VP24/8mc are similar in their ability to block expression of interferon-induced host genes, suggesting that the increase in EBOV virulence for guinea pigs is not associated with VP24 interferon antagonist function. This study sheds light on the mechanism of resistance to EBOV infection and highlights the critical role of VP24 in EBOV pathogenesis.
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Affiliation(s)
- Mathieu Mateo
- Filovirus Laboratory, INSERM U758, Human Virology Department, Université de Lyon, Ecole Normale Supérieure de Lyon, Lyon, France
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Mateo M, Carbonnelle C, Martinez MJ, Reynard O, Page A, Volchkova VA, Volchkov VE. Knockdown of Ebola virus VP24 impairs viral nucleocapsid assembly and prevents virus replication. J Infect Dis 2011; 204 Suppl 3:S892-6. [PMID: 21987766 DOI: 10.1093/infdis/jir311] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The structural protein VP24 of Ebola virus (EBOV) is a determinant of virulence in rodent models and possesses an interferon antagonist function. In this study, we investigate the role of VP24 in EBOV replication using RNA interference by small interfering RNA to knock down the expression of this protein in virus-infected cells. We reveal that VP24 is required for assembly of viral nucleocapsids and that silencing of VP24 expression prevents the release of EBOV.
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Affiliation(s)
- Mathieu Mateo
- Filovirus Laboratory, INSERM U758, Human Virology Department, Université de Lyon, Ecole Normale Supérieure de Lyon, Lyon, France
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Reynard O, Mokhonov V, Mokhonova E, Leung J, Page A, Mateo M, Pyankova O, Georges-Courbot MC, Raoul H, Khromykh AA, Volchkov VE. Kunjin virus replicon-based vaccines expressing Ebola virus glycoprotein GP protect the guinea pig against lethal Ebola virus infection. J Infect Dis 2011; 204 Suppl 3:S1060-5. [PMID: 21987742 DOI: 10.1093/infdis/jir347] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Pre- or postexposure treatments against the filoviral hemorrhagic fevers are currently not available for human use. We evaluated, in a guinea pig model, the immunogenic potential of Kunjin virus (KUN)-derived replicons as a vaccine candidate against Ebola virus (EBOV). Virus like particles (VLPs) containing KUN replicons expressing EBOV wild-type glycoprotein GP, membrane anchor-truncated GP (GP/Ctr), and mutated GP (D637L) with enhanced shedding capacity were generated and assayed for their protective efficacy. Immunization with KUN VLPs expressing full-length wild-type and D637L-mutated GPs but not membrane anchor-truncated GP induced dose-dependent protection against a challenge of a lethal dose of recombinant guinea pig-adapted EBOV. The surviving animals showed complete clearance of the virus. Our results demonstrate the potential for KUN replicon vectors as vaccine candidates against EBOV infection.
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Affiliation(s)
- O Reynard
- Filovirus Laboratory, INSERM U758, Human Virology Department, Claude Bernard University Lyon-1, Université de Lyon, Ecole Normale Supérieure de Lyon, Lyon, France
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39
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Mühlebach MD, Mateo M, Sinn PL, Prüfer S, Uhlig KM, Leonard VHJ, Navaratnarajah CK, Frenzke M, Wong XX, Sawatsky B, Ramachandran S, McCray PB, Cichutek K, von Messling V, Lopez M, Cattaneo R. Adherens junction protein nectin-4 is the epithelial receptor for measles virus. Nature 2011; 480:530-3. [PMID: 22048310 PMCID: PMC3245798 DOI: 10.1038/nature10639] [Citation(s) in RCA: 425] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Accepted: 10/17/2011] [Indexed: 12/25/2022]
Abstract
Measles virus is an aerosol-transmitted virus that affects more than 10 million children each year and accounts for approximately 120,000 deaths. Although it was long believed to replicate in the respiratory epithelium before disseminating, it was recently shown to infect initially macrophages and dendritic cells of the airways using signalling lymphocytic activation molecule family member 1 (SLAMF1; also called CD150) as a receptor. These cells then cross the respiratory epithelium and transport the infection to lymphatic organs where measles virus replicates vigorously. How and where the virus crosses back into the airways has remained unknown. On the basis of functional analyses of surface proteins preferentially expressed on virus-permissive human epithelial cell lines, here we identify nectin-4 (ref. 8; also called poliovirus-receptor-like-4 (PVRL4)) as a candidate host exit receptor. This adherens junction protein of the immunoglobulin superfamily interacts with the viral attachment protein with high affinity through its membrane-distal domain. Nectin-4 sustains measles virus entry and non-cytopathic lateral spread in well-differentiated primary human airway epithelial sheets infected basolaterally. It is downregulated in infected epithelial cells, including those of macaque tracheae. Although other viruses use receptors to enter hosts or transit through their epithelial barriers, we suggest that measles virus targets nectin-4 to emerge in the airways. Nectin-4 is a cellular marker of several types of cancer, which has implications for ongoing measles-virus-based clinical trials of oncolysis.
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Affiliation(s)
- Michael D Mühlebach
- Division of Medical Biotechnology, Paul-Ehrlich-Institut, 63225 Langen, Germany
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40
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Dado D, Izquierdo F, Vera O, Montoya A, Mateo M, Fenoy S, Galván AL, García S, García A, Aránguez E, López L, del Águila C, Miró G. Detection of zoonotic intestinal parasites in public parks of Spain. Potential epidemiological role of microsporidia. Zoonoses Public Health 2011; 59:23-8. [PMID: 21824364 DOI: 10.1111/j.1863-2378.2011.01411.x] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Several studies have demonstrated that the soil of public parks presents an important source of infection which has a significant impact on public health. Children are the main group affected by accidentally ingestion of contaminated soil. This study was performed in order to identify the presence of zoonotic parasites in dog and cat faecal and soil samples from public parks of Madrid, Spain. Six hundred twenty-five and seventy-nine soil and faecal samples (presumably from dogs and cats) respectively were collected from 67 parks. Intestinal parasites were identified in 27 parks (40.3%), which were contamined with Giardia sp. (19.4%), microsporidia (19.4%), Toxocara spp. (16.4%), Cryptosporidium sp. (6%), Entamoeba histolytica (3%) and Ancylostomidae (3%). Combinations of two or more intestinal parasites were found in 11 parks, and it was common to find Giardia and microsporidia together in samples. Intestinal parasites were detected in 18% (112/625) of soil samples. The most frequent parasite species found in the examined soil samples were Toxocara spp. (16.4%), followed by Giardia sp. (4.5%) and Strongyloides sp. larvae (3%). The zoonotic parasites found in the 79 faecal samples were Giardia sp. (17.7%), Cryptosporidium sp. (9%), E. histolytica (2.5%), Trichuris vulpis (1.3%), Toxascaris leonina (1.3%) and microsporidia spores (28%). Microsporidia characterization by amplification of DNA confirmed 10 samples as positive, eight for E. bieneusi and two for E. hellem by PCR. The role of those parasites in the environment are discussed.
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Affiliation(s)
- D Dado
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
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Maestre JR, Mateo M, Méndez ML, Aguilar L, Gimenez MJ, Alou L, Coronel P, Granizo JJ, Prieto J. In vitro interference of beta-lactams with biofilm development by prevalent community respiratory tract isolates. Int J Antimicrob Agents 2010; 35:274-7. [PMID: 20031375 DOI: 10.1016/j.ijantimicag.2009.10.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2009] [Revised: 09/15/2009] [Accepted: 10/26/2009] [Indexed: 10/20/2022]
Abstract
Interference of cefditoren (CDN) and amoxicillin/clavulanic acid (AMC) with biofilm production was studied using 11 Streptococcus pneumoniae isolates with minimum inhibitory concentrations (MICs) ranging from 0.015microg/mL to 0.5microg/mL for CDN and from 0.06microg/mL to 2microg/mL for AMC (except for one isolate with an AMC MIC of 8microg/mL) and 5 Haemophilus influenzae isolates with MICs of 0.03-0.06microg/mL for CDN and 0.5-16microg/mL for AMC. Slime production was assessed in antibiotic-free medium and with 0.03microg/mL CDN or 1/0.5microg/mL AMC by measuring the optical density at 450nm (OD(450)). Significantly lower mean OD(450) values were obtained for S. pneumoniae with antibiotics compared with controls (CDN, 0.088 vs. 0.118, P=0.003; and AMC, 0.095 vs. 0.112, P=0.003), with significant correlation between both antibiotics (r=0.752; P=0.008). Percent reduction in OD(450) values was higher for CDN compared with AMC (24.02% vs. 15.92%; P=0.008). For H. influenzae, significantly lower mean OD(450) values were obtained with CDN compared with controls (0.083 vs. 0.096; P=0.043) but not with AMC (0.086 vs. 0.095; P=0.08). Comparing percent reductions in S. pneumoniae versus H. influenzae for each antibiotic, no differences were found for AMC (15.92% vs. 9.40%; P=0.36), with a tendency for CDN (24.02% vs. 13.79%; P=0.069). Different beta-lactams may have different capabilities of interfering with S. pneumoniae biofilm development when tested under the same experimental conditions.
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Affiliation(s)
- J R Maestre
- Microbiology Department, Hospital Central de la Defensa Gómez-Ulla, Gta. del Ejército s/n, 28007 Madrid, Spain
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Araujo P, Soriano C, Oliveros M, Fdez Tajuelo R, Manzanares J, Mateo M, Martin E, Lendínez MJ. Upper gastrointestinal tract bleeding in the ICU. Crit Care 2009. [PMCID: PMC4084310 DOI: 10.1186/cc7588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Montoya A, Miró G, Mateo M, Ramírez C, Fuentes I. Molecular Characterization of Toxoplasma gondii Isolates from Cats in Spain. J Parasitol 2008; 94:1044-6. [DOI: 10.1645/ge-1403.1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2007] [Accepted: 02/04/2008] [Indexed: 11/10/2022] Open
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Maestre JR, Mateo M, Sánchez P. [Bacteremia after periodontal procedures]. Rev Esp Quimioter 2008; 21:153-156. [PMID: 18792815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
INTRODUCTION Bacteremia frequently occurs after oral surgery and odontology procedures. Periodontitis may affect the incidence and bacterial spectrum of bacteremia. Periodontal disease may be a significant risk factor for the development of certain systemic diseases. This study has aimed to evaluate the frequency of aerobic and anaerobic bacteria in the bloodstream following scaling and root planing. MATERIAL AND METHODS Thirteen patients with generalized chronic periodontitis were included in the study. Two samples of peripheral blood were drawn for culture at different times: pre-treatment and immediately after odontology treatment (full-mouth scaling). RESULTS None of the 13 patients had bacteremia before the procedures. Bacteremia after scaling occurred in 10/13 (76.9 %) of periodontitis patients. The anaerobic bacteria (Prevotella spp., Micromonas micros and Fusobacterium nucleatum) were the most predominant microorganism. CONCLUSIONS Our findings suggest that periodontal procedures induce bacteremia and may represent risk of developing systemic complications. The use of antibiotic prophylaxis is crucial for its prevention.
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Affiliation(s)
- J R Maestre
- Servicio de Microbiología Clínica, Hospital Gómez Ulla, Madrid.
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Mateo M, Maestre JR, Aguilar L, Giménez MJ, Granizo JJ, Prieto J. Strong slime production is a marker of clinical significance in Staphylococcus epidermidis isolated from intravascular catheters. Eur J Clin Microbiol Infect Dis 2007; 27:311-4. [PMID: 18095009 DOI: 10.1007/s10096-007-0433-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2007] [Accepted: 11/10/2007] [Indexed: 10/22/2022]
Abstract
Biofilm production was assessed in 52 Staphylococcus epidermidis isolates from the catheters of 52 patients with catheter-related bloodstream infections (CR-BSI) and compared with 14 isolates from the skin of healthy volunteers by spectrophotometry. The isolates were classified as non- (G1), weak- (G2) or strong- (G3) slime producers based on optical density, and as producers and non-producers based on the results of the Congo red agar test. Differences (p = 0.012) in the proportion of G1, G2 and G3 among the isolates were found between catheter and healthy skin strains: there was a higher percentage of G1 types among the healthy skin strains (35.7 vs. 11.5%; p = 0.046) and a higher percentage of G3 types among the catheter isolates (44.2 vs. 0%; p = 0.001). No significant differences were found with the Congo red agar test. G3 is a phenotypic marker for CR-BSI.
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Affiliation(s)
- M Mateo
- Microbiology Department, Hospital Central de la Defensa Gómez-Ulla, Gta. del Ejército s/n, 28007 Madrid, Spain
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Ruiz-Ballesteros E, Mollejo M, Mateo M, Algara P, Martínez P, Piris MA. MicroRNA losses in the frequently deleted region of 7q in SMZL. Leukemia 2007; 21:2547-9. [PMID: 17625607 DOI: 10.1038/sj.leu.2404853] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
MESH Headings
- Chromosome Deletion
- Chromosomes, Human, Pair 7/genetics
- Chromosomes, Human, Pair 7/ultrastructure
- Female
- Gene Expression Regulation, Neoplastic
- Genes, Tumor Suppressor
- Humans
- Leukemia, Lymphocytic, Chronic, B-Cell/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/metabolism
- Lymphoma, B-Cell, Marginal Zone/genetics
- Lymphoma, B-Cell, Marginal Zone/metabolism
- Lymphoma, Follicular/genetics
- Lymphoma, Follicular/metabolism
- Lymphoma, Mantle-Cell/genetics
- Lymphoma, Mantle-Cell/metabolism
- Male
- MicroRNAs/biosynthesis
- MicroRNAs/genetics
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- Neoplasm Proteins/physiology
- Proto-Oncogene Proteins/biosynthesis
- Proto-Oncogene Proteins/genetics
- Proto-Oncogene Proteins/physiology
- Purpura, Thrombocytopenic, Idiopathic/genetics
- Purpura, Thrombocytopenic, Idiopathic/metabolism
- RNA, Neoplasm/biosynthesis
- RNA, Neoplasm/genetics
- Splenic Neoplasms/genetics
- Splenic Neoplasms/metabolism
- Splenic Rupture/genetics
- Splenic Rupture/metabolism
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Guardiola J, Matas L, Mauri A, Herrera S, Mateo M, Fuster M, Sambeat M, Cadafalch J, Domingo P. P653 Mycobacterium tuberculosis disease in HIV-infected patients in HAART era. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)70494-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Miró G, Montoya A, Mateo M, Alonso A, García S, García A, Caballero MJ, Molina R. A leishmaniosis surveillance system among stray dogs in the region of Madrid: ten years of serodiagnosis (1996–2006). Parasitol Res 2007; 101:253-7. [PMID: 17323100 DOI: 10.1007/s00436-007-0497-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2006] [Accepted: 02/07/2007] [Indexed: 11/25/2022]
Abstract
Two seroepidemiological surveys on canine leishmaniosis in stray dogs were performed annually in the Madrid region for 10 years (November 1996-April 2006). The presence of anti-Leishmania antibodies was detected by immunofluorescence antibodies test (cut off 1:100). The overall seroprevalence found in the 1,803 dogs studied was 7.8% (141 positive dogs). Seropositivity was not associated with either breed or sex. Statistical analysis revealed greater seroprevalence in groups of older dogs, indicating that the probability of exposure to the bite of sand flies infected with Leishmania infantum increased with age. The most important result was a high proportion of seropositivity for leishmaniosis (79.5%) among dogs without clinical signs of canine leishmaniosis. These data are very important because stray dogs can play an important role in the epidemiology of this zoonotic disease. Furthermore, the stray population could be useful sentinels to follow the progress of the disease in endemic areas.
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Affiliation(s)
- G Miró
- Facultad de Veterinaria, Departamento de Sanidad Animal, UCM, Madrid, Spain.
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Cabello B, Marruecos L, Mateo M. Edema agudo de pulmón y neumomediastino por inhalación de cocaína y heroína. Med Clin (Barc) 2003. [DOI: 10.1157/13042640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Cabello B, Marruecos L, Mateo M. La imagen de la semana. Med Clin (Barc) 2003. [DOI: 10.1016/s0025-7753(03)73621-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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