1
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Huot N, Planchais C, Rosenbaum P, Contreras V, Jacquelin B, Petitdemange C, Lazzerini M, Beaumont E, Orta-Resendiz A, Rey FA, Reeves RK, Le Grand R, Mouquet H, Müller-Trutwin M. SARS-CoV-2 viral persistence in lung alveolar macrophages is controlled by IFN-γ and NK cells. Nat Immunol 2023; 24:2068-2079. [PMID: 37919524 PMCID: PMC10681903 DOI: 10.1038/s41590-023-01661-4] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 09/26/2023] [Indexed: 11/04/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA generally becomes undetectable in upper airways after a few days or weeks postinfection. Here we used a model of viral infection in macaques to address whether SARS-CoV-2 persists in the body and which mechanisms regulate its persistence. Replication-competent virus was detected in bronchioalveolar lavage (BAL) macrophages beyond 6 months postinfection. Viral propagation in BAL macrophages occurred from cell to cell and was inhibited by interferon-γ (IFN-γ). IFN-γ production was strongest in BAL NKG2r+CD8+ T cells and NKG2Alo natural killer (NK) cells and was further increased in NKG2Alo NK cells after spike protein stimulation. However, IFN-γ production was impaired in NK cells from macaques with persisting virus. Moreover, IFN-γ also enhanced the expression of major histocompatibility complex (MHC)-E on BAL macrophages, possibly inhibiting NK cell-mediated killing. Macaques with less persisting virus mounted adaptive NK cells that escaped the MHC-E-dependent inhibition. Our findings reveal an interplay between NK cells and macrophages that regulated SARS-CoV-2 persistence in macrophages and was mediated by IFN-γ.
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Affiliation(s)
- Nicolas Huot
- Institut Pasteur, Université Paris-Cité, HIV, Inflammation and Persistence Unit, Paris, France.
| | - Cyril Planchais
- Institut Pasteur, Université Paris Cité, INSERM U1222, Humoral Immunology Unit, Paris, France
| | - Pierre Rosenbaum
- Institut Pasteur, Université Paris Cité, INSERM U1222, Humoral Immunology Unit, Paris, France
| | - Vanessa Contreras
- Université Paris-Saclay, INSERM, CEA, Immunologie des Maladies Virales, Auto-Immunes, Hématologiques et Bactériennes (IMVA-HB/IDMIT/UMR1184), Fontenay-aux-Roses & Kremlin Bicêtre, France
| | - Beatrice Jacquelin
- Institut Pasteur, Université Paris-Cité, HIV, Inflammation and Persistence Unit, Paris, France
| | - Caroline Petitdemange
- Institut Pasteur, Université Paris-Cité, HIV, Inflammation and Persistence Unit, Paris, France
| | - Marie Lazzerini
- Institut Pasteur, Université Paris-Cité, HIV, Inflammation and Persistence Unit, Paris, France
| | - Emma Beaumont
- Institut Pasteur, Université Paris-Cité, HIV, Inflammation and Persistence Unit, Paris, France
| | - Aurelio Orta-Resendiz
- Institut Pasteur, Université Paris-Cité, HIV, Inflammation and Persistence Unit, Paris, France
| | - Félix A Rey
- Institut Pasteur, Université Paris-Cité, Structural Virology Unit, CNRS UMR3569, Paris, France
| | - R Keith Reeves
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Division of Innate and Comparative Immunology, Center for Human Systems Immunology, Department of Surgery, Duke University School of Medicine, Durham, NC, USA
- Ragon Institute of Massachusetts General Hospital, MIT, Cambridge, MA, USA
- Duke Research and Discovery at RTP, Duke University Health System, Durham, NC, USA
| | - Roger Le Grand
- Université Paris-Saclay, INSERM, CEA, Immunologie des Maladies Virales, Auto-Immunes, Hématologiques et Bactériennes (IMVA-HB/IDMIT/UMR1184), Fontenay-aux-Roses & Kremlin Bicêtre, France
| | - Hugo Mouquet
- Institut Pasteur, Université Paris Cité, INSERM U1222, Humoral Immunology Unit, Paris, France
| | - Michaela Müller-Trutwin
- Institut Pasteur, Université Paris-Cité, HIV, Inflammation and Persistence Unit, Paris, France
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2
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Billet A, Hadjerci J, Tran T, Kessler P, Ulmer J, Mourier G, Ghazarian M, Gonzalez A, Thai R, Urquia P, Van Baelen AC, Meola A, Fernandez I, Deville-Foillard S, MacDonald E, Paolini L, Schmidt F, Rey FA, Kay MS, Tartour E, Servent D, Johannes L. A synthetic delivery vector for mucosal vaccination. Biomaterials 2023; 302:122298. [PMID: 37713762 DOI: 10.1016/j.biomaterials.2023.122298] [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] [Received: 01/25/2023] [Revised: 07/26/2023] [Accepted: 08/26/2023] [Indexed: 09/17/2023]
Abstract
The success of mRNA-based vaccines during the Covid-19 pandemic has highlighted the value of this new platform for vaccine development against infectious disease. However, the CD8+ T cell response remains modest with mRNA vaccines, and these do not induce mucosal immunity, which would be needed to prevent viral spread in the healthy population. To address this drawback, we developed a dendritic cell targeting mucosal vaccination vector, the homopentameric STxB. Here, we describe the highly efficient chemical synthesis of the protein, and its in vitro folding. This straightforward preparation led to a synthetic delivery tool whose biophysical and intracellular trafficking characteristics were largely indistinguishable from recombinant STxB. The chemical approach allowed for the generation of new variants with bioorthogonal handles. Selected variants were chemically coupled to several types of antigens derived from the mucosal viruses SARS-CoV-2 and type 16 human papillomavirus. Upon intranasal administration in mice, mucosal immunity, including resident memory CD8+ T cells and IgA antibodies was induced against these antigens. Our study thereby identifies a novel synthetic antigen delivery tool for mucosal vaccination with an unmatched potential to respond to an urgent medical need.
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Affiliation(s)
- Anne Billet
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France; Université de Paris, 85 boulevard Saint-Germain, 75006, Paris, France
| | - Justine Hadjerci
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France
| | - Thi Tran
- Université Paris Cité, INSERM, PARCC, PARIS, France
| | - Pascal Kessler
- Université Paris Saclay, CEA, DMTS/SIMoS, 91191, Gif sur Yvette, Cedex, France
| | - Jonathan Ulmer
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France
| | - Gilles Mourier
- Université Paris Saclay, CEA, DMTS/SIMoS, 91191, Gif sur Yvette, Cedex, France
| | - Marine Ghazarian
- Université Paris Saclay, CEA, DMTS/SIMoS, 91191, Gif sur Yvette, Cedex, France
| | - Anthony Gonzalez
- Université Paris Saclay, CEA, DMTS/SIMoS, 91191, Gif sur Yvette, Cedex, France
| | - Robert Thai
- Université Paris Saclay, CEA, DMTS/SIMoS, 91191, Gif sur Yvette, Cedex, France
| | | | | | - Annalisa Meola
- Institut Pasteur, Université Paris-Cité, Structural Virology Unit, CNRS UMR 3569, 28 Rue du Docteur Roux, 75015, Paris, France
| | - Ignacio Fernandez
- Institut Pasteur, Université Paris-Cité, Structural Virology Unit, CNRS UMR 3569, 28 Rue du Docteur Roux, 75015, Paris, France
| | - Stéphanie Deville-Foillard
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France; Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS UPR 2301, Gif-sur-Yvette, 91198, France
| | - Ewan MacDonald
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France
| | - Léa Paolini
- Université Paris Cité, INSERM, PARCC, PARIS, France
| | - Frédéric Schmidt
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France
| | - Félix A Rey
- Institut Pasteur, Université Paris-Cité, Structural Virology Unit, CNRS UMR 3569, 28 Rue du Docteur Roux, 75015, Paris, France
| | - Michael S Kay
- University of Utah, Department of Biochemistry Biopolymers Research Building, 20 South 2030 East, Salt Lake City, UT, 84112-5700, USA
| | - Eric Tartour
- Université Paris Cité, INSERM, PARCC, PARIS, France; Department of Immunology, Hopital Europeen Georges-Pompidou, AP-HP, Paris, Cedex 15 75908, France.
| | - Denis Servent
- Université Paris Saclay, CEA, DMTS/SIMoS, 91191, Gif sur Yvette, Cedex, France.
| | - Ludger Johannes
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France.
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3
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Slough MM, Li R, Herbert AS, Lasso G, Kuehne AI, Monticelli SR, Bakken RR, Liu Y, Ghosh A, Moreau AM, Zeng X, Rey FA, Guardado-Calvo P, Almo SC, Dye JM, Jangra RK, Wang Z, Chandran K. Author Correction: Two point mutations in protocadherin-1 disrupt hantavirus recognition and afford protection against lethal infection. Nat Commun 2023; 14:5924. [PMID: 37739957 PMCID: PMC10517158 DOI: 10.1038/s41467-023-41659-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/24/2023] Open
Affiliation(s)
- Megan M Slough
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Rong Li
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Andrew S Herbert
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
| | - Gorka Lasso
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Ana I Kuehne
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
| | - Stephanie R Monticelli
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
- The Geneva Foundation, Tacoma, WA, USA
| | - Russell R Bakken
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
| | - Yanan Liu
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Agnidipta Ghosh
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Alicia M Moreau
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
| | - Xiankun Zeng
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
| | - Félix A Rey
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Structural Virology Unit, F-75015, Paris, France
| | - Pablo Guardado-Calvo
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Structural Virology Unit, F-75015, Paris, France
- Institut Pasteur, Université Paris Cité, Structural Biology of Infectious Diseases Unit, F-75015, Paris, France
| | - Steven C Almo
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA
| | - John M Dye
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
| | - Rohit K Jangra
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA.
- Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, USA.
| | - Zhongde Wang
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA.
| | - Kartik Chandran
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA.
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4
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Sokal A, Barba-Spaeth G, Hunault L, Fernández I, Broketa M, Meola A, Fourati S, Azzaoui I, Vandenberghe A, Lagouge-Roussey P, Broutin M, Roeser A, Bouvier-Alias M, Crickx E, Languille L, Fournier M, Michel M, Godeau B, Gallien S, Melica G, Nguyen Y, Canoui-Poitrine F, Pirenne F, Megret J, Pawlotsky JM, Fillatreau S, Reynaud CA, Weill JC, Rey FA, Bruhns P, Mahévas M, Chappert P. SARS-CoV-2 Omicron BA.1 breakthrough infection drives late remodeling of the memory B cell repertoire in vaccinated individuals. Immunity 2023; 56:2137-2151.e7. [PMID: 37543032 DOI: 10.1016/j.immuni.2023.07.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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] [Received: 01/27/2023] [Revised: 05/12/2023] [Accepted: 07/06/2023] [Indexed: 08/07/2023]
Abstract
How infection by a viral variant showing antigenic drift impacts a preformed mature human memory B cell (MBC) repertoire remains an open question. Here, we studied the MBC response up to 6 months after SARS-CoV-2 Omicron BA.1 breakthrough infection in individuals previously vaccinated with three doses of the COVID-19 mRNA vaccine. Longitudinal analysis, using single-cell multi-omics and functional analysis of monoclonal antibodies from RBD-specific MBCs, revealed that a BA.1 breakthrough infection mostly recruited pre-existing cross-reactive MBCs with limited de novo response against BA.1-restricted epitopes. Reorganization of clonal hierarchy and new rounds of germinal center reactions, however, combined to maintain diversity and induce progressive maturation of the MBC repertoire against common Hu-1 and BA.1, but not BA.5-restricted, SARS-CoV-2 Spike RBD epitopes. Such remodeling was further associated with a marked improvement in overall neutralizing breadth and potency. These findings have fundamental implications for the design of future vaccination booster strategies.
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Affiliation(s)
- Aurélien Sokal
- Institut Necker Enfants Malades, INSERM U1151/CNRS UMR 8253, Action thématique incitative sur programme-Avenir Team, Auto-Immune and Immune B cells, Université Paris Cité, Université Paris Est-Créteil, Créteil, France; Service de Médecine interne, Hôpital Beaujon, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris Cité, Clichy, France; Service de Médecine Interne, Centre Hospitalier Universitaire Henri-Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Giovanna Barba-Spaeth
- Institut Pasteur, Université de Paris Cité, CNRS UMR 3569, Unité de Virologie Structurale, Paris, France
| | - Lise Hunault
- Institut Pasteur, Université de Paris Cité, INSERM UMR1222, Unit of Antibodies in Therapy and Pathology, Paris, France; Sorbonne University, ED394, Paris, France; Sorbonne Université, INSERM, CNRS, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), 75013 Paris, France
| | - Ignacio Fernández
- Institut Pasteur, Université de Paris Cité, CNRS UMR 3569, Unité de Virologie Structurale, Paris, France
| | - Matteo Broketa
- Institut Pasteur, Université de Paris Cité, INSERM UMR1222, Unit of Antibodies in Therapy and Pathology, Paris, France; Sorbonne University, ED394, Paris, France
| | - Annalisa Meola
- Institut Pasteur, Université de Paris Cité, CNRS UMR 3569, Unité de Virologie Structurale, Paris, France
| | - Slim Fourati
- Département de Virologie, Bactériologie, Hygiène et Mycologie-Parasitologie, Centre Hospitalier Universitaire Henri Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Créteil, France; INSERM U955, équipe 18. Institut Mondor de Recherche Biomédicale (IMRB), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Imane Azzaoui
- Service de Médecine Interne, Centre Hospitalier Universitaire Henri-Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France; INSERM U955, équipe 2. Institut Mondor de Recherche Biomédicale (IMRB), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Alexis Vandenberghe
- Institut Necker Enfants Malades, INSERM U1151/CNRS UMR 8253, Action thématique incitative sur programme-Avenir Team, Auto-Immune and Immune B cells, Université Paris Cité, Université Paris Est-Créteil, Créteil, France; Service de Médecine Interne, Centre Hospitalier Universitaire Henri-Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France; INSERM U955, équipe 2. Institut Mondor de Recherche Biomédicale (IMRB), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Pauline Lagouge-Roussey
- Institut Necker Enfants Malades, INSERM U1151/CNRS UMR 8253, Action thématique incitative sur programme-Avenir Team, Auto-Immune and Immune B cells, Université Paris Cité, Université Paris Est-Créteil, Créteil, France; Service de Médecine Interne, Centre Hospitalier Universitaire Henri-Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France; INSERM U955, équipe 2. Institut Mondor de Recherche Biomédicale (IMRB), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Manon Broutin
- Institut Necker Enfants Malades, INSERM U1151/CNRS UMR 8253, Action thématique incitative sur programme-Avenir Team, Auto-Immune and Immune B cells, Université Paris Cité, Université Paris Est-Créteil, Créteil, France; INSERM U955, équipe 2. Institut Mondor de Recherche Biomédicale (IMRB), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Anais Roeser
- Institut Necker Enfants Malades, INSERM U1151/CNRS UMR 8253, Action thématique incitative sur programme-Avenir Team, Auto-Immune and Immune B cells, Université Paris Cité, Université Paris Est-Créteil, Créteil, France; Service de Médecine Interne, Centre Hospitalier Universitaire Henri-Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Magali Bouvier-Alias
- Département de Virologie, Bactériologie, Hygiène et Mycologie-Parasitologie, Centre Hospitalier Universitaire Henri Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Créteil, France; INSERM U955, équipe 18. Institut Mondor de Recherche Biomédicale (IMRB), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Etienne Crickx
- Institut Necker Enfants Malades, INSERM U1151/CNRS UMR 8253, Action thématique incitative sur programme-Avenir Team, Auto-Immune and Immune B cells, Université Paris Cité, Université Paris Est-Créteil, Créteil, France; Service de Médecine Interne, Centre Hospitalier Universitaire Henri-Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France; INSERM U955, équipe 2. Institut Mondor de Recherche Biomédicale (IMRB), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Laetitia Languille
- Service de Médecine Interne, Centre Hospitalier Universitaire Henri-Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Morgane Fournier
- Institut Necker Enfants Malades, INSERM U1151/CNRS UMR 8253, Action thématique incitative sur programme-Avenir Team, Auto-Immune and Immune B cells, Université Paris Cité, Université Paris Est-Créteil, Créteil, France; Service de Médecine Interne, Centre Hospitalier Universitaire Henri-Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Marc Michel
- Service de Médecine Interne, Centre Hospitalier Universitaire Henri-Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Bertrand Godeau
- Service de Médecine Interne, Centre Hospitalier Universitaire Henri-Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Sébastien Gallien
- Service de Maladies Infectieuses, Centre Hospitalier Universitaire Henri Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Giovanna Melica
- Service de Maladies Infectieuses, Centre Hospitalier Universitaire Henri Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Yann Nguyen
- Service de Médecine Interne, Centre Hospitalier Universitaire Cochin, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Florence Canoui-Poitrine
- Département de Santé Publique, Unité de Recherche Clinique (URC), CEpiA (Clinical Epidemiology and Ageing), EA 7376- Institut Mondor de Recherche Biomédicale (IMRB), Centre Hospitalier Universitaire Henri-Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France
| | - France Pirenne
- INSERM U955, équipe 18. Institut Mondor de Recherche Biomédicale (IMRB), Université Paris-Est Créteil (UPEC), Créteil, France; Etablissement Français du Sang (EFS) Ile de France, Créteil, France
| | - Jérôme Megret
- Plateforme de Cytométrie en Flux, Structure Fédérative de Recherche Necker, INSERM US24-CNRS UMS3633, Paris, France
| | - Jean-Michel Pawlotsky
- Département de Virologie, Bactériologie, Hygiène et Mycologie-Parasitologie, Centre Hospitalier Universitaire Henri Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Créteil, France; INSERM U955, équipe 18. Institut Mondor de Recherche Biomédicale (IMRB), Université Paris-Est Créteil (UPEC), Créteil, France
| | - Simon Fillatreau
- Institut Necker Enfants Malades (INEM), INSERM U1151/CNRS UMR 8253, Université de Paris, Paris, France
| | - Claude-Agnès Reynaud
- Institut Necker Enfants Malades, INSERM U1151/CNRS UMR 8253, Action thématique incitative sur programme-Avenir Team, Auto-Immune and Immune B cells, Université Paris Cité, Université Paris Est-Créteil, Créteil, France
| | - Jean-Claude Weill
- Institut Necker Enfants Malades, INSERM U1151/CNRS UMR 8253, Action thématique incitative sur programme-Avenir Team, Auto-Immune and Immune B cells, Université Paris Cité, Université Paris Est-Créteil, Créteil, France
| | - Félix A Rey
- Institut Pasteur, Université de Paris Cité, CNRS UMR 3569, Unité de Virologie Structurale, Paris, France
| | - Pierre Bruhns
- Institut Pasteur, Université de Paris Cité, INSERM UMR1222, Unit of Antibodies in Therapy and Pathology, Paris, France
| | - Matthieu Mahévas
- Institut Necker Enfants Malades, INSERM U1151/CNRS UMR 8253, Action thématique incitative sur programme-Avenir Team, Auto-Immune and Immune B cells, Université Paris Cité, Université Paris Est-Créteil, Créteil, France; Service de Médecine Interne, Centre Hospitalier Universitaire Henri-Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris-Est Créteil (UPEC), Créteil, France; INSERM U955, équipe 2. Institut Mondor de Recherche Biomédicale (IMRB), Université Paris-Est Créteil (UPEC), Créteil, France.
| | - Pascal Chappert
- Institut Necker Enfants Malades, INSERM U1151/CNRS UMR 8253, Action thématique incitative sur programme-Avenir Team, Auto-Immune and Immune B cells, Université Paris Cité, Université Paris Est-Créteil, Créteil, France; INSERM U955, équipe 2. Institut Mondor de Recherche Biomédicale (IMRB), Université Paris-Est Créteil (UPEC), Créteil, France.
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5
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Slough MM, Li R, Herbert AS, Lasso G, Kuehne AI, Monticelli SR, Bakken RR, Liu Y, Ghosh A, Moreau AM, Zeng X, Rey FA, Guardado-Calvo P, Almo SC, Dye JM, Jangra RK, Wang Z, Chandran K. Two point mutations in protocadherin-1 disrupt hantavirus recognition and afford protection against lethal infection. Nat Commun 2023; 14:4454. [PMID: 37488123 PMCID: PMC10366084 DOI: 10.1038/s41467-023-40126-y] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 07/06/2023] [Indexed: 07/26/2023] Open
Abstract
Andes virus (ANDV) and Sin Nombre virus (SNV) are the etiologic agents of severe hantavirus cardiopulmonary syndrome (HCPS) in the Americas for which no FDA-approved countermeasures are available. Protocadherin-1 (PCDH1), a cadherin-superfamily protein recently identified as a critical host factor for ANDV and SNV, represents a new antiviral target; however, its precise role remains to be elucidated. Here, we use computational and experimental approaches to delineate the binding surface of the hantavirus glycoprotein complex on PCDH1's first extracellular cadherin repeat domain. Strikingly, a single amino acid residue in this PCDH1 surface influences the host species-specificity of SNV glycoprotein-PCDH1 interaction and cell entry. Mutation of this and a neighboring residue substantially protects Syrian hamsters from pulmonary disease and death caused by ANDV. We conclude that PCDH1 is a bona fide entry receptor for ANDV and SNV whose direct interaction with hantavirus glycoproteins could be targeted to develop new interventions against HCPS.
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Affiliation(s)
- Megan M Slough
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Rong Li
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Andrew S Herbert
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
| | - Gorka Lasso
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Ana I Kuehne
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
| | - Stephanie R Monticelli
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
- The Geneva Foundation, Tacoma, WA, USA
| | - Russell R Bakken
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
| | - Yanan Liu
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Agnidipta Ghosh
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Alicia M Moreau
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
| | - Xiankun Zeng
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
| | - Félix A Rey
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Structural Virology Unit, F-75015, Paris, France
| | - Pablo Guardado-Calvo
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Structural Virology Unit, F-75015, Paris, France
- Institut Pasteur, Université Paris Cité, Structural Biology of Infectious Diseases Unit, F-75015, Paris, France
| | - Steven C Almo
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA
| | - John M Dye
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
| | - Rohit K Jangra
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA.
- Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, USA.
| | - Zhongde Wang
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA.
| | - Kartik Chandran
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA.
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6
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Dynesen LT, Fernandez I, Coquin Y, Delaplace M, Montange T, Njouom R, Bilounga-Ndongo C, Rey FA, Gessain A, Backovic M, Buseyne F. Neutralization of zoonotic retroviruses by human antibodies: Genotype-specific epitopes within the receptor-binding domain from simian foamy virus. PLoS Pathog 2023; 19:e1011339. [PMID: 37093892 PMCID: PMC10159361 DOI: 10.1371/journal.ppat.1011339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 05/04/2023] [Accepted: 03/31/2023] [Indexed: 04/25/2023] Open
Abstract
Infection with viruses of animal origin pose a significant threat to human populations. Simian foamy viruses (SFVs) are frequently transmitted to humans, in which they establish a life-long infection, with the persistence of replication-competent virus. However, zoonotic SFVs do not induce severe disease nor are they transmitted between humans. Thus, SFVs represent a model of zoonotic retroviruses that lead to a chronic infection successfully controlled by the human immune system. We previously showed that infected humans develop potent neutralizing antibodies (nAbs). Within the viral envelope (Env), the surface protein (SU) carries a variable region that defines two genotypes, overlaps with the receptor binding domain (RBD), and is the exclusive target of nAbs. However, its antigenic determinants are not understood. Here, we characterized nAbs present in plasma samples from SFV-infected individuals living in Central Africa. Neutralization assays were carried out in the presence of recombinant SU that compete with SU at the surface of viral vector particles. We defined the regions targeted by the nAbs using mutant SU proteins modified at the glycosylation sites, RBD functional subregions, and genotype-specific sequences that present properties of B-cell epitopes. We observed that nAbs target conformational epitopes. We identified three major epitopic regions: the loops at the apex of the RBD, which likely mediate interactions between Env protomers to form Env trimers, a loop located in the vicinity of the heparan binding site, and a region proximal to the highly conserved glycosylation site N8. We provide information on how nAbs specific for each of the two viral genotypes target different epitopes. Two common immune escape mechanisms, sequence variation and glycan shielding, were not observed. We propose a model according to which the neutralization mechanisms rely on the nAbs to block the Env conformational change and/or interfere with binding to susceptible cells. As the SFV RBD is structurally different from known retroviral RBDs, our data provide fundamental knowledge on the structural basis for the inhibition of viruses by nAbs. Trial registration: The study was registered at www.clinicaltrials.gov: https://clinicaltrials.gov/ct2/show/NCT03225794/.
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Affiliation(s)
- Lasse Toftdal Dynesen
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité d'épidémiologie et Physiopathologie des Virus Oncogènes, Paris, France
| | - Ignacio Fernandez
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité de Virologie Structurale, Paris, France
| | - Youna Coquin
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité d'épidémiologie et Physiopathologie des Virus Oncogènes, Paris, France
| | - Manon Delaplace
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité d'épidémiologie et Physiopathologie des Virus Oncogènes, Paris, France
| | - Thomas Montange
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité d'épidémiologie et Physiopathologie des Virus Oncogènes, Paris, France
| | | | | | - Félix A Rey
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité de Virologie Structurale, Paris, France
| | - Antoine Gessain
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité d'épidémiologie et Physiopathologie des Virus Oncogènes, Paris, France
| | - Marija Backovic
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité de Virologie Structurale, Paris, France
| | - Florence Buseyne
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité d'épidémiologie et Physiopathologie des Virus Oncogènes, Paris, France
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7
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Engdahl TB, Binshtein E, Brocato RL, Kuzmina NA, Principe LM, Kwilas SA, Kim RK, Chapman NS, Porter MS, Guardado-Calvo P, Rey FA, Handal LS, Diaz SM, Zagol-Ikapitte IA, Tran MH, McDonald WH, Meiler J, Reidy JX, Trivette A, Bukreyev A, Hooper JW, Crowe JE. Antigenic mapping and functional characterization of human New World hantavirus neutralizing antibodies. eLife 2023; 12:e81743. [PMID: 36971354 PMCID: PMC10115451 DOI: 10.7554/elife.81743] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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: 07/11/2022] [Accepted: 03/27/2023] [Indexed: 03/29/2023] Open
Abstract
Hantaviruses are high-priority emerging pathogens carried by rodents and transmitted to humans by aerosolized excreta or, in rare cases, person-to-person contact. While infections in humans are relatively rare, mortality rates range from 1 to 40% depending on the hantavirus species. There are currently no FDA-approved vaccines or therapeutics for hantaviruses, and the only treatment for infection is supportive care for respiratory or kidney failure. Additionally, the human humoral immune response to hantavirus infection is incompletely understood, especially the location of major antigenic sites on the viral glycoproteins and conserved neutralizing epitopes. Here, we report antigenic mapping and functional characterization for four neutralizing hantavirus antibodies. The broadly neutralizing antibody SNV-53 targets an interface between Gn/Gc, neutralizes through fusion inhibition and cross-protects against the Old World hantavirus species Hantaan virus when administered pre- or post-exposure. Another broad antibody, SNV-24, also neutralizes through fusion inhibition but targets domain I of Gc and demonstrates weak neutralizing activity to authentic hantaviruses. ANDV-specific, neutralizing antibodies (ANDV-5 and ANDV-34) neutralize through attachment blocking and protect against hantavirus cardiopulmonary syndrome (HCPS) in animals but target two different antigenic faces on the head domain of Gn. Determining the antigenic sites for neutralizing antibodies will contribute to further therapeutic development for hantavirus-related diseases and inform the design of new broadly protective hantavirus vaccines.
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Affiliation(s)
- Taylor B Engdahl
- Department of Pathology, Microbiology and Immunology, Vanderbilt UniversityNashvilleUnited States
| | - Elad Binshtein
- Vanderbilt Vaccine Center, Vanderbilt University Medical CenterNashvilleUnited States
| | - Rebecca L Brocato
- Virology Division, United States Army Medical Research Institute of Infectious DiseasesFt DetrickUnited States
| | - Natalia A Kuzmina
- Department of Pathology, The University of Texas Medical Branch at GalvestonGalvestonUnited States
- Galveston National LaboratoryGalvestonUnited States
| | - Lucia M Principe
- Virology Division, United States Army Medical Research Institute of Infectious DiseasesFt DetrickUnited States
| | - Steven A Kwilas
- Virology Division, United States Army Medical Research Institute of Infectious DiseasesFt DetrickUnited States
| | - Robert K Kim
- Virology Division, United States Army Medical Research Institute of Infectious DiseasesFt DetrickUnited States
| | - Nathaniel S Chapman
- Department of Pathology, Microbiology and Immunology, Vanderbilt UniversityNashvilleUnited States
| | - Monique S Porter
- Department of Pathology, Microbiology and Immunology, Vanderbilt UniversityNashvilleUnited States
| | | | - Félix A Rey
- Institut Pasteur, Université Paris CitéParisFrance
| | - Laura S Handal
- Vanderbilt Vaccine Center, Vanderbilt University Medical CenterNashvilleUnited States
| | - Summer M Diaz
- Vanderbilt Vaccine Center, Vanderbilt University Medical CenterNashvilleUnited States
| | - Irene A Zagol-Ikapitte
- Department of Biochemistry and Mass Spectrometry Research Center, Vanderbilt UniversityNashvilleUnited States
| | - Minh H Tran
- Department of Biochemistry and Mass Spectrometry Research Center, Vanderbilt UniversityNashvilleUnited States
| | - W Hayes McDonald
- Department of Biochemistry and Mass Spectrometry Research Center, Vanderbilt UniversityNashvilleUnited States
| | - Jens Meiler
- Department of Chemistry, Vanderbilt UniversityNashvilleUnited States
| | - Joseph X Reidy
- Vanderbilt Vaccine Center, Vanderbilt University Medical CenterNashvilleUnited States
| | - Andrew Trivette
- Vanderbilt Vaccine Center, Vanderbilt University Medical CenterNashvilleUnited States
| | - Alexander Bukreyev
- Department of Pathology, The University of Texas Medical Branch at GalvestonGalvestonUnited States
- Galveston National LaboratoryGalvestonUnited States
- Department of Microbiology and Immunology, University of Texas Medical BranchGalvestonUnited States
| | - Jay W Hooper
- Virology Division, United States Army Medical Research Institute of Infectious DiseasesFt DetrickUnited States
| | - James E Crowe
- Department of Pathology, Microbiology and Immunology, Vanderbilt UniversityNashvilleUnited States
- Vanderbilt Vaccine Center, Vanderbilt University Medical CenterNashvilleUnited States
- Department of Pediatrics, Vanderbilt University Medical CenterNashvilleUnited States
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8
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Fernández I, Dynesen LT, Coquin Y, Pederzoli R, Brun D, Haouz A, Gessain A, Rey FA, Buseyne F, Backovic M. The crystal structure of a simian Foamy Virus receptor binding domain provides clues about entry into host cells. Nat Commun 2023; 14:1262. [PMID: 36878926 PMCID: PMC9988990 DOI: 10.1038/s41467-023-36923-0] [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: 09/30/2022] [Accepted: 02/21/2023] [Indexed: 03/08/2023] Open
Abstract
The surface envelope glycoprotein (Env) of all retroviruses mediates virus binding to cells and fusion of the viral and cellular membranes. A structure-function relationship for the HIV Env that belongs to the Orthoretrovirus subfamily has been well established. Structural information is however largely missing for the Env of Foamy viruses (FVs), the second retroviral subfamily. In this work we present the X-ray structure of the receptor binding domain (RBD) of a simian FV Env at 2.57 Å resolution, revealing two subdomains and an unprecedented fold. We have generated a model for the organization of the RBDs within the trimeric Env, which indicates that the upper subdomains form a cage-like structure at the apex of the Env, and identified residues K342, R343, R359 and R369 in the lower subdomain as key players for the interaction of the RBD and viral particles with heparan sulfate.
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Affiliation(s)
- Ignacio Fernández
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité de Virologie Structurale, 75015, Paris, France
| | - Lasse Toftdal Dynesen
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité d'Épidémiologie et Physiopathologie des Virus Oncogènes, 75015, Paris, France
| | - Youna Coquin
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité d'Épidémiologie et Physiopathologie des Virus Oncogènes, 75015, Paris, France
| | - Riccardo Pederzoli
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité de Virologie Structurale, 75015, Paris, France
| | - Delphine Brun
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité de Virologie Structurale, 75015, Paris, France
| | - Ahmed Haouz
- Institut Pasteur, Université Paris Cité, Plateforme de cristallographie-C2RT, CNRS UMR 3528, 75015, Paris, France
| | - Antoine Gessain
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité d'Épidémiologie et Physiopathologie des Virus Oncogènes, 75015, Paris, France
| | - Félix A Rey
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité de Virologie Structurale, 75015, Paris, France
| | - Florence Buseyne
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité d'Épidémiologie et Physiopathologie des Virus Oncogènes, 75015, Paris, France
| | - Marija Backovic
- Institut Pasteur, Université Paris Cité, CNRS UMR3569, Unité de Virologie Structurale, 75015, Paris, France.
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9
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Hellert J, Aebischer A, Haouz A, Guardado-Calvo P, Reiche S, Beer M, Rey FA. Structure, function, and evolution of the Orthobunyavirus membrane fusion glycoprotein. Cell Rep 2023; 42:112142. [PMID: 36827185 DOI: 10.1016/j.celrep.2023.112142] [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: 10/22/2022] [Revised: 12/29/2022] [Accepted: 02/07/2023] [Indexed: 02/24/2023] Open
Abstract
La Crosse virus, responsible for pediatric encephalitis in the United States, and Schmallenberg virus, a highly teratogenic veterinary virus in Europe, belong to the large Orthobunyavirus genus of zoonotic arthropod-borne pathogens distributed worldwide. Viruses in this under-studied genus cause CNS infections or fever with debilitating arthralgia/myalgia syndromes, with no effective treatment. The main surface antigen, glycoprotein Gc (∼1,000 residues), has a variable N-terminal half (GcS) targeted by the patients' antibody response and a conserved C-terminal moiety (GcF) responsible for membrane fusion during cell entry. Here, we report the X-ray structure of post-fusion La Crosse and Schmallenberg virus GcF, revealing the molecular determinants for hairpin formation and trimerization required to drive membrane fusion. We further experimentally confirm the role of residues in the fusion loops and in a vestigial endoplasmic reticulum (ER) translocation sequence at the GcS-GcF junction. The resulting knowledge provides essential molecular underpinnings for future development of potential therapeutic treatments and vaccines.
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Affiliation(s)
- Jan Hellert
- Structural Virology Unit, Institut Pasteur - Université Paris-Cité, CNRS UMR 3569, 25-28 rue du Dr. Roux, 75015 Paris, France; Centre for Structural Systems Biology (CSSB), Leibniz-Institut für Virologie (LIV), Notkestraße 85, 22607 Hamburg, Germany
| | - Andrea Aebischer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Südufer 10, 17493 Greifswald, Germany; Department of Experimental Animal Facilities and Biorisk Management, Friedrich-Loeffler-Institut, Südufer 10, 17493 Greifswald, Germany
| | - Ahmed Haouz
- Crystallography Platform C2RT, Institut Pasteur, CNRS UMR 3528, 25-28 rue du Dr. Roux, 75015 Paris, France
| | - Pablo Guardado-Calvo
- Structural Virology Unit, Institut Pasteur - Université Paris-Cité, CNRS UMR 3569, 25-28 rue du Dr. Roux, 75015 Paris, France
| | - Sven Reiche
- Department of Experimental Animal Facilities and Biorisk Management, Friedrich-Loeffler-Institut, Südufer 10, 17493 Greifswald, Germany
| | - Martin Beer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Südufer 10, 17493 Greifswald, Germany.
| | - Félix A Rey
- Structural Virology Unit, Institut Pasteur - Université Paris-Cité, CNRS UMR 3569, 25-28 rue du Dr. Roux, 75015 Paris, France.
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10
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Shih HP, Ding JY, Sotolongo Bellón J, Lo YF, Chung PH, Ting HT, Peng JJ, Wu TY, Lin CH, Lo CC, Lin YN, Yeh CF, Chen JB, Wu TS, Liu YM, Kuo CY, Wang SY, Tu KH, Ng CY, Lei WT, Tsai YH, Chen JH, Chuang YT, Huang JY, Rey FA, Chen HK, Chang TW, Piehler J, Chi CY, Ku CL. Pathogenic autoantibodies to IFN-γ act through the impedance of receptor assembly and Fc-mediated response. J Exp Med 2022; 219:213354. [PMID: 35833912 PMCID: PMC9287643 DOI: 10.1084/jem.20212126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 03/21/2022] [Accepted: 06/23/2022] [Indexed: 01/16/2023] Open
Abstract
Anti-interferon (IFN)-γ autoantibodies (AIGAs) are a pathogenic factor in late-onset immunodeficiency with disseminated mycobacterial and other opportunistic infections. AIGAs block IFN-γ function, but their effects on IFN-γ signaling are unknown. Using a single-cell capture method, we isolated 19 IFN-γ-reactive monoclonal antibodies (mAbs) from patients with AIGAs. All displayed high-affinity (KD < 10-9 M) binding to IFN-γ, but only eight neutralized IFN-γ-STAT1 signaling and HLA-DR expression. Signal blockade and binding affinity were correlated and attributed to somatic hypermutations. Cross-competition assays identified three nonoverlapping binding sites (I-III) for AIGAs on IFN-γ. We found that site I mAb neutralized IFN-γ by blocking its binding to IFN-γR1. Site II and III mAbs bound the receptor-bound IFN-γ on the cell surface, abolishing IFN-γR1-IFN-γR2 heterodimerization and preventing downstream signaling. Site III mAbs mediated antibody-dependent cellular cytotoxicity, probably through antibody-IFN-γ complexes on cells. Pathogenic AIGAs underlie mycobacterial infections by the dual blockade of IFN-γ signaling and by eliminating IFN-γ-responsive cells.
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Affiliation(s)
- Han-Po Shih
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Jing-Ya Ding
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Junel Sotolongo Bellón
- Division of Biophysics, Department of Biology, University of Osnabruck, Osnabruck, Germany
| | - Yu-Fang Lo
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | | | - He-Ting Ting
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Jhan-Jie Peng
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Tsai-Yi Wu
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Chia-Hao Lin
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Chia-Chi Lo
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - You-Ning Lin
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Chun-Fu Yeh
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan,Division of Infectious Diseases, Department of Internal Medicine, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Jiun-Bo Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Ting-Shu Wu
- Division of Infectious Diseases, Department of Internal Medicine, Chang Gung Memorial Hospital, Linkou, Taiwan,Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Yuag-Meng Liu
- Division of Infectious Diseases, Department of Internal Medicine, Changhua Christian Hospital, Changhua, Taiwan
| | - Chen-Yen Kuo
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan,Division of Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Shang-Yu Wang
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan,Division of General Surgery, Department of Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Kun-Hua Tu
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan,Chang Gung University College of Medicine, Taoyuan, Taiwan,Kidney Research Center, Department of Nephrology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Chau Yee Ng
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan,Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Wei-Te Lei
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan,Department of Pediatrics, Hsinchu MacKay Memorial Hospital, Hsinchu, Taiwan
| | - Yu-Huan Tsai
- Laboratory of Host-Microbe Interactions and Cell Dynamics, Institute of Microbiology and Immunology, College of Life Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Jou-Han Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Ya-Ting Chuang
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
| | | | - Félix A. Rey
- Structural Virology Unit, Department of Virology, Institut Pasteur, Paris, France
| | | | - Tse-Wen Chang
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Jacob Piehler
- Division of Biophysics, Department of Biology, University of Osnabruck, Osnabruck, Germany
| | - Chih-Yu Chi
- Division of Infectious Diseases, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan,School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan,Chih-Yu Chi:
| | - Cheng-Lung Ku
- Laboratory of Human Immunology and Infectious Disease, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan,Department of Nephrology, Chang Gung Memorial Hospital, Taoyuan, Taiwan,Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan,Correspondence to Cheng-Lung Ku:
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11
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Temmam S, Vongphayloth K, Baquero E, Munier S, Bonomi M, Regnault B, Douangboubpha B, Karami Y, Chrétien D, Sanamxay D, Xayaphet V, Paphaphanh P, Lacoste V, Somlor S, Lakeomany K, Phommavanh N, Pérot P, Dehan O, Amara F, Donati F, Bigot T, Nilges M, Rey FA, van der Werf S, Brey PT, Eloit M. Author Correction: Bat coronaviruses related to SARS-CoV-2 and infectious for human cells. Nature 2022; 607:E19. [PMID: 35798954 PMCID: PMC9263033 DOI: 10.1038/s41586-022-05048-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sarah Temmam
- Institut Pasteur, Université de Paris, Pathogen Discovery Laboratory, Paris, France.,Institut Pasteur, Université de Paris, The OIE Collaborating Center for the Detection and Identification in Humans of Emerging Animal Pathogens, Paris, France
| | | | - Eduard Baquero
- Institut Pasteur, Université de Paris, CNRS UMR 3569, Structural Virology Unit, Paris, France
| | - Sandie Munier
- Institut Pasteur, Université de Paris, CNRS UMR 3569, Molecular Genetics of RNA Viruses Unit, Paris, France
| | - Massimiliano Bonomi
- Institut Pasteur, Université de Paris, CNRS UMR 3528, Structural Bioinformatics Unit, Paris, France
| | - Béatrice Regnault
- Institut Pasteur, Université de Paris, Pathogen Discovery Laboratory, Paris, France.,Institut Pasteur, Université de Paris, The OIE Collaborating Center for the Detection and Identification in Humans of Emerging Animal Pathogens, Paris, France
| | - Bounsavane Douangboubpha
- Faculty of Environmental Sciences, National University of Laos, Vientiane, Lao People's Democratic Republic
| | - Yasaman Karami
- Institut Pasteur, Université de Paris, CNRS UMR 3528, Structural Bioinformatics Unit, Paris, France
| | - Delphine Chrétien
- Institut Pasteur, Université de Paris, Pathogen Discovery Laboratory, Paris, France.,Institut Pasteur, Université de Paris, The OIE Collaborating Center for the Detection and Identification in Humans of Emerging Animal Pathogens, Paris, France
| | - Daosavanh Sanamxay
- Faculty of Environmental Sciences, National University of Laos, Vientiane, Lao People's Democratic Republic
| | - Vilakhan Xayaphet
- Faculty of Environmental Sciences, National University of Laos, Vientiane, Lao People's Democratic Republic
| | - Phetphoumin Paphaphanh
- Faculty of Environmental Sciences, National University of Laos, Vientiane, Lao People's Democratic Republic
| | - Vincent Lacoste
- Institut Pasteur du Laos, Vientiane, Lao People's Democratic Republic
| | - Somphavanh Somlor
- Institut Pasteur du Laos, Vientiane, Lao People's Democratic Republic
| | | | | | - Philippe Pérot
- Institut Pasteur, Université de Paris, Pathogen Discovery Laboratory, Paris, France.,Institut Pasteur, Université de Paris, The OIE Collaborating Center for the Detection and Identification in Humans of Emerging Animal Pathogens, Paris, France
| | - Océane Dehan
- Institut Pasteur, Université de Paris, CNRS UMR 3569, Molecular Genetics of RNA Viruses Unit, Paris, France.,Institut Pasteur, Université de Paris, National Reference Center for Respiratory Viruses, Paris, France
| | - Faustine Amara
- Institut Pasteur, Université de Paris, CNRS UMR 3569, Molecular Genetics of RNA Viruses Unit, Paris, France
| | - Flora Donati
- Institut Pasteur, Université de Paris, CNRS UMR 3569, Molecular Genetics of RNA Viruses Unit, Paris, France.,Institut Pasteur, Université de Paris, National Reference Center for Respiratory Viruses, Paris, France
| | - Thomas Bigot
- Institut Pasteur, Université de Paris, Pathogen Discovery Laboratory, Paris, France.,Institut Pasteur, Université de Paris, Bioinformatic and Biostatistic Hub - Computational Biology Department, Paris, France
| | - Michael Nilges
- Institut Pasteur, Université de Paris, CNRS UMR 3528, Structural Bioinformatics Unit, Paris, France
| | - Félix A Rey
- Institut Pasteur, Université de Paris, CNRS UMR 3569, Structural Virology Unit, Paris, France
| | - Sylvie van der Werf
- Institut Pasteur, Université de Paris, CNRS UMR 3569, Molecular Genetics of RNA Viruses Unit, Paris, France.,Institut Pasteur, Université de Paris, National Reference Center for Respiratory Viruses, Paris, France
| | - Paul T Brey
- Institut Pasteur du Laos, Vientiane, Lao People's Democratic Republic
| | - Marc Eloit
- Institut Pasteur, Université de Paris, Pathogen Discovery Laboratory, Paris, France. .,Institut Pasteur, Université de Paris, The OIE Collaborating Center for the Detection and Identification in Humans of Emerging Animal Pathogens, Paris, France. .,Ecole Nationale Vétérinaire d'Alfort, University of Paris-Est, Maisons-Alfort, France.
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12
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Benfrid S, Park K, Dellarole M, Voss JE, Tamietti C, Pehau‐Arnaudet G, Raynal B, Brûlé S, England P, Zhang X, Mikhailova A, Hasan M, Ungeheuer M, Petres S, Biering SB, Harris E, Sakuntabhai A, Buchy P, Duong V, Dussart P, Coulibaly F, Bontems F, Rey FA, Flamand M. Dengue virus NS1 protein conveys pro-inflammatory signals by docking onto high-density lipoproteins. EMBO Rep 2022; 23:e53600. [PMID: 35607830 PMCID: PMC10549233 DOI: 10.15252/embr.202153600] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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: 07/10/2021] [Revised: 04/24/2022] [Accepted: 04/27/2022] [Indexed: 10/05/2023] Open
Abstract
The dengue virus nonstructural protein 1 (NS1) is a secreted virulence factor that modulates complement, activates immune cells and alters endothelial barriers. The molecular basis of these events remains incompletely understood. Here we describe a functional high affinity complex formed between NS1 and human high-density lipoproteins (HDL). Collapse of the soluble NS1 hexamer upon binding to the lipoprotein particle leads to the anchoring of amphipathic NS1 dimeric subunits into the HDL outer layer. The stable complex can be visualized by electron microscopy as a spherical HDL with rod-shaped NS1 dimers protruding from the surface. We further show that the assembly of NS1-HDL complexes triggers the production of pro-inflammatory cytokines in human primary macrophages while NS1 or HDL alone do not. Finally, we detect NS1 in complex with HDL and low-density lipoprotein (LDL) particles in the plasma of hospitalized dengue patients and observe NS1-apolipoprotein E-positive complexes accumulating overtime. The functional reprogramming of endogenous lipoprotein particles by NS1 as a means to exacerbate systemic inflammation during viral infection provides a new paradigm in dengue pathogenesis.
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Affiliation(s)
- Souheyla Benfrid
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
- Université Paris Descartes SorbonneParis CitéFrance
- Present address:
Laboratoire de Santé AnimaleANSES, INRA, ENVA, UMR 1161Université Paris‐EstMaisons‐AlfortFrance
| | - Kyu‐Ho Park
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
- Present address:
Applied Molecular VirologyInstitut Pasteur KoreaSeongnam‐siKorea
| | - Mariano Dellarole
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
- Present address:
Virus Biophysics LaboratoryBionanosciences Research Center (CIBION)National Scientific and Technical Research Council (CONICET)Ciudad Autónoma de Buenos AiresArgentina
| | - James E Voss
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
- Present address:
Department of Immunology and MicrobiologyThe Scripps Research InstituteLa JollaCAUSA
| | - Carole Tamietti
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
| | | | - Bertrand Raynal
- Molecular Biophysics FacilityCNRS UMR 3528Institut PasteurParisFrance
| | - Sébastien Brûlé
- Molecular Biophysics FacilityCNRS UMR 3528Institut PasteurParisFrance
| | - Patrick England
- Molecular Biophysics FacilityCNRS UMR 3528Institut PasteurParisFrance
| | - Xiaokang Zhang
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
- Present address:
Guangdong Provincial Key Laboratory of Brain Connectome and Behavior, CAS Key Laboratory of Brain Connectome and Manipulationthe Brain Cognition and Brain Disease Institute (BCBDI)Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen‐Hong Kong Institute of Brain Science‐Shenzhen Fundamental Research InstitutionsShenzhenChina
| | - Anastassia Mikhailova
- HIV Inflammation et PersistanceInstitut PasteurParisFrance
- Present address:
Division of Molecular NeurobiologyDepartment of Medical Biochemistry and BiophysicsKarolinska InstituteStockholmSweden
| | - Milena Hasan
- Cytometry and Biomarkers Unit of Technology and ServiceCB UTechSParisFrance
| | | | - Stéphane Petres
- Production and Purification of Recombinant Proteins FacilityInstitut PasteurParisFrance
| | - Scott B Biering
- Division of Infectious Diseases and VaccinologySchool of Public HealthUniversity of CaliforniaBerkeleyCAUSA
| | - Eva Harris
- Division of Infectious Diseases and VaccinologySchool of Public HealthUniversity of CaliforniaBerkeleyCAUSA
| | | | - Philippe Buchy
- Virology UnitInstitut Pasteur du CambodgeInstitut Pasteur International NetworkPhnom PenhCambodia
- Present address:
GlaxoSmithKline Vaccines R&DSingaporeSingapore
| | - Veasna Duong
- Virology UnitInstitut Pasteur du CambodgeInstitut Pasteur International NetworkPhnom PenhCambodia
| | - Philippe Dussart
- Virology UnitInstitut Pasteur du CambodgeInstitut Pasteur International NetworkPhnom PenhCambodia
| | - Fasséli Coulibaly
- Department of Biochemistry and Molecular BiologyMonash UniversityClaytonVic.Australia
| | - François Bontems
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
- Département de Biologie et Chimie StructuralesInstitut de Chimie des Substances Naturelles, CNRS UPR2301Gif‐sur‐YvetteFrance
| | - Félix A Rey
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
| | - Marie Flamand
- Unité de Virologie StructuraleInstitut Pasteur and CNRS UMR3569ParisFrance
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13
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Planchais C, Fernández I, Bruel T, de Melo GD, Prot M, Beretta M, Guardado-Calvo P, Dufloo J, Molinos-Albert LM, Backovic M, Chiaravalli J, Giraud E, Vesin B, Conquet L, Grzelak L, Planas D, Staropoli I, Guivel-Benhassine F, Hieu T, Boullé M, Cervantes-Gonzalez M, Ungeheuer MN, Charneau P, van der Werf S, Agou F, Dimitrov JD, Simon-Lorière E, Bourhy H, Montagutelli X, Rey FA, Schwartz O, Mouquet H. Potent human broadly SARS-CoV-2-neutralizing IgA and IgG antibodies effective against Omicron BA.1 and BA.2. J Exp Med 2022; 219:213286. [PMID: 35704748 PMCID: PMC9206116 DOI: 10.1084/jem.20220638] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [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: 04/12/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 12/11/2022] Open
Abstract
Memory B-cell and antibody responses to the SARS-CoV-2 spike protein contribute to long-term immune protection against severe COVID-19, which can also be prevented by antibody-based interventions. Here, wide SARS-CoV-2 immunoprofiling in Wuhan COVID-19 convalescents combining serological, cellular, and monoclonal antibody explorations revealed humoral immunity coordination. Detailed characterization of a hundred SARS-CoV-2 spike memory B-cell monoclonal antibodies uncovered diversity in their repertoire and antiviral functions. The latter were influenced by the targeted spike region with strong Fc-dependent effectors to the S2 subunit and potent neutralizers to the receptor-binding domain. Amongst those, Cv2.1169 and Cv2.3194 antibodies cross-neutralized SARS-CoV-2 variants of concern, including Omicron BA.1 and BA.2. Cv2.1169, isolated from a mucosa-derived IgA memory B cell demonstrated potency boost as IgA dimers and therapeutic efficacy as IgG antibodies in animal models. Structural data provided mechanistic clues to Cv2.1169 potency and breadth. Thus, potent broadly neutralizing IgA antibodies elicited in mucosal tissues can stem SARS-CoV-2 infection, and Cv2.1169 and Cv2.3194 are prime candidates for COVID-19 prevention and treatment.
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Affiliation(s)
- Cyril Planchais
- Institut Pasteur, Université Paris Cité, Laboratory of Humoral Immunology, Paris, France
- INSERM U1222, Paris, France
| | - Ignacio Fernández
- Institut Pasteur, Université Paris Cité, Structural Virology Unit, Paris, France
- CNRS UMR3569, Paris, France
| | - Timothée Bruel
- CNRS UMR3569, Paris, France
- Institut Pasteur, Université Paris Cité, Virus & Immunity Unit, Paris, France
| | - Guilherme Dias de Melo
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, Paris, France
| | - Matthieu Prot
- Institut Pasteur, Université Paris Cité, G5 Evolutionary Genomics of RNA Viruses, Paris, France
| | - Maxime Beretta
- Institut Pasteur, Université Paris Cité, Laboratory of Humoral Immunology, Paris, France
- INSERM U1222, Paris, France
| | - Pablo Guardado-Calvo
- Institut Pasteur, Université Paris Cité, Structural Virology Unit, Paris, France
- CNRS UMR3569, Paris, France
| | - Jérémy Dufloo
- CNRS UMR3569, Paris, France
- Institut Pasteur, Université Paris Cité, Virus & Immunity Unit, Paris, France
| | - Luis M. Molinos-Albert
- Institut Pasteur, Université Paris Cité, Laboratory of Humoral Immunology, Paris, France
- INSERM U1222, Paris, France
| | - Marija Backovic
- Institut Pasteur, Université Paris Cité, Structural Virology Unit, Paris, France
- CNRS UMR3569, Paris, France
| | - Jeanne Chiaravalli
- Institut Pasteur, Université Paris Cité, Chemogenomic and Biological Screening Core Facility, C2RT, Paris, France
| | - Emilie Giraud
- Institut Pasteur, Université Paris Cité, Chemogenomic and Biological Screening Core Facility, C2RT, Paris, France
| | - Benjamin Vesin
- Pasteur-TheraVectys, Paris, France
- Institut Pasteur, Université Paris Cité, Molecular Virology & Vaccinology Unit, Paris, France
| | - Laurine Conquet
- Institut Pasteur, Université Paris Cité, Mouse Genetics Laboratory, Paris, France
| | - Ludivine Grzelak
- CNRS UMR3569, Paris, France
- Institut Pasteur, Université Paris Cité, Virus & Immunity Unit, Paris, France
| | - Delphine Planas
- CNRS UMR3569, Paris, France
- Institut Pasteur, Université Paris Cité, Virus & Immunity Unit, Paris, France
| | - Isabelle Staropoli
- CNRS UMR3569, Paris, France
- Institut Pasteur, Université Paris Cité, Virus & Immunity Unit, Paris, France
| | - Florence Guivel-Benhassine
- CNRS UMR3569, Paris, France
- Institut Pasteur, Université Paris Cité, Virus & Immunity Unit, Paris, France
| | - Thierry Hieu
- Institut Pasteur, Université Paris Cité, Functional Genetics of Infectious Diseases Unit, Paris, France
| | - Mikaël Boullé
- Institut Pasteur, Université Paris Cité, Chemogenomic and Biological Screening Core Facility, C2RT, Paris, France
| | - Minerva Cervantes-Gonzalez
- Department of Epidemiology, Biostatistics and Clinical Research, Assistance Publique-Hôpitaux de Paris, Bichat Claude Bernard University Hospital, INSERM CIC-EC 1425, Paris, France
| | - Marie-Noëlle Ungeheuer
- Institut Pasteur, Université Paris Cité, Investigation Clinique et Accès aux Ressources Biologiques, Center for Translational Research, Paris, France
| | - Pierre Charneau
- Pasteur-TheraVectys, Paris, France
- Institut Pasteur, Université Paris Cité, Molecular Virology & Vaccinology Unit, Paris, France
| | - Sylvie van der Werf
- CNRS UMR3569, Paris, France
- Institut Pasteur, Université Paris Cité, Molecular Genetics of RNA Viruses, Paris, France
- Université de Paris, Paris, France
| | - Fabrice Agou
- Institut Pasteur, Université Paris Cité, Chemogenomic and Biological Screening Core Facility, C2RT, Paris, France
| | | | | | - Jordan D. Dimitrov
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | - Etienne Simon-Lorière
- Institut Pasteur, Université Paris Cité, G5 Evolutionary Genomics of RNA Viruses, Paris, France
| | - Hervé Bourhy
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, Paris, France
| | - Xavier Montagutelli
- Institut Pasteur, Université Paris Cité, Mouse Genetics Laboratory, Paris, France
| | - Félix A. Rey
- Institut Pasteur, Université Paris Cité, Structural Virology Unit, Paris, France
- CNRS UMR3569, Paris, France
- Félix A. Rey:
| | - Olivier Schwartz
- CNRS UMR3569, Paris, France
- Institut Pasteur, Université Paris Cité, Virus & Immunity Unit, Paris, France
| | - Hugo Mouquet
- Institut Pasteur, Université Paris Cité, Laboratory of Humoral Immunology, Paris, France
- INSERM U1222, Paris, France
- Correspondence to Hugo Mouquet:
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14
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Vaney MC, Dellarole M, Duquerroy S, Medits I, Tsouchnikas G, Rouvinski A, England P, Stiasny K, Heinz FX, Rey FA. Evolution and activation mechanism of the flavivirus class II membrane-fusion machinery. Nat Commun 2022; 13:3718. [PMID: 35764616 PMCID: PMC9239988 DOI: 10.1038/s41467-022-31111-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 06/03/2022] [Indexed: 11/08/2022] Open
Abstract
The flavivirus envelope glycoproteins prM and E drive the assembly of icosahedral, spiky immature particles that bud across the membrane of the endoplasmic reticulum. Maturation into infectious virions in the trans-Golgi network involves an acid-pH-driven rearrangement into smooth particles made of (prM/E)2 dimers exposing a furin site for prM cleavage into "pr" and "M". Here we show that the prM "pr" moiety derives from an HSP40 cellular chaperonin. Furthermore, the X-ray structure of the tick-borne encephalitis virus (pr/E)2 dimer at acidic pH reveals the E 150-loop as a hinged-lid that opens at low pH to expose a positively-charged pr-binding pocket at the E dimer interface, inducing (prM/E)2 dimer formation to generate smooth particles in the Golgi. Furin cleavage is followed by lid-closure upon deprotonation in the neutral-pH extracellular environment, expelling pr while the 150-loop takes the relay in fusion loop protection, thus revealing the elusive flavivirus mechanism of fusion activation.
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Affiliation(s)
- Marie-Christine Vaney
- Institut Pasteur, Université Paris Cité, CNRS UMR 3569, Unité de Virologie Structurale, Paris, France
| | - Mariano Dellarole
- Institut Pasteur, Université Paris Cité, CNRS UMR 3569, Unité de Virologie Structurale, Paris, France
- CIBION, CONICET, Buenos Aires, Argentina
| | - Stéphane Duquerroy
- Institut Pasteur, Université Paris Cité, CNRS UMR 3569, Unité de Virologie Structurale, Paris, France
- Université Paris Saclay, Faculté des Sciences, Orsay, France
| | - Iris Medits
- Center for Virology, Medical University of Vienna, Vienna, Austria
| | - Georgios Tsouchnikas
- Center for Virology, Medical University of Vienna, Vienna, Austria
- HOOKIPA Pharma 19 Inc, Vienna, Austria
| | - Alexander Rouvinski
- Institut Pasteur, Université Paris Cité, CNRS UMR 3569, Unité de Virologie Structurale, Paris, France
- Department of Microbiology and Molecular Genetics, Institute for Medical Research Israel-Canada, The Kuvin Center for the Study of Infectious and Tropical Diseases, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Patrick England
- Institut Pasteur, Université Paris Cité, CNRS UMR 3528, Plateforme de Biophysique Moléculaire, Paris, France
| | - Karin Stiasny
- Center for Virology, Medical University of Vienna, Vienna, Austria.
| | - Franz X Heinz
- Center for Virology, Medical University of Vienna, Vienna, Austria.
| | - Félix A Rey
- Institut Pasteur, Université Paris Cité, CNRS UMR 3569, Unité de Virologie Structurale, Paris, France.
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15
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Sokal A, Broketa M, Barba-Spaeth G, Meola A, Fernández I, Fourati S, Azzaoui I, de La Selle A, Vandenberghe A, Roeser A, Bouvier-Alias M, Crickx E, Languille L, Michel M, Godeau B, Gallien S, Melica G, Nguyen Y, Zarrouk V, Canoui-Poitrine F, Noizat-Pirenne F, Megret J, Pawlotsky JM, Fillatreau S, Simon-Lorière E, Weill JC, Reynaud CA, Rey FA, Bruhns P, Chappert P, Mahévas M. Analysis of mRNA vaccination-elicited RBD-specific memory B cells reveals strong but incomplete immune escape of the SARS-CoV-2 Omicron variant. Immunity 2022; 55:1096-1104.e4. [PMID: 35483354 PMCID: PMC8986479 DOI: 10.1016/j.immuni.2022.04.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 02/16/2022] [Accepted: 04/04/2022] [Indexed: 11/05/2022]
Abstract
The SARS-CoV-2 Omicron variant can escape neutralization by vaccine-elicited and convalescent antibodies. Memory B cells (MBCs) represent another layer of protection against SARS-CoV-2, as they persist after infection and vaccination and improve their affinity. Whether MBCs elicited by mRNA vaccines can recognize the Omicron variant remains unclear. We assessed the affinity and neutralization potency against the Omicron variant of several hundred naturally expressed MBC-derived monoclonal IgG antibodies from vaccinated COVID-19-recovered and -naive individuals. Compared with other variants of concern, Omicron evaded recognition by a larger proportion of MBC-derived antibodies, with only 30% retaining high affinity against the Omicron RBD, and the reduction in neutralization potency was even more pronounced. Nonetheless, neutralizing MBC clones could be found in all the analyzed individuals. Therefore, despite the strong immune escape potential of the Omicron variant, these results suggest that the MBC repertoire generated by mRNA vaccines still provides some protection against the Omicron variant in vaccinated individuals.
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16
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Lorin V, Fernández I, Masse-Ranson G, Bouvin-Pley M, Molinos-Albert LM, Planchais C, Hieu T, Péhau-Arnaudet G, Hrebík D, Girelli-Zubani G, Fiquet O, Guivel-Benhassine F, Sanders RW, Walker BD, Schwartz O, Scheid JF, Dimitrov JD, Plevka P, Braibant M, Seaman MS, Bontems F, Di Santo JP, Rey FA, Mouquet H. Epitope convergence of broadly HIV-1 neutralizing IgA and IgG antibody lineages in a viremic controller. J Exp Med 2022; 219:213042. [PMID: 35230385 PMCID: PMC8932546 DOI: 10.1084/jem.20212045] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 01/03/2022] [Accepted: 01/12/2022] [Indexed: 12/11/2022] Open
Abstract
Decrypting the B cell ontogeny of HIV-1 broadly neutralizing antibodies (bNAbs) is paramount for vaccine design. Here, we characterized IgA and IgG bNAbs of three distinct B cell lineages in a viremic controller, two of which comprised only IgG+ or IgA+ blood memory B cells; the third combined both IgG and IgA clonal variants. 7-269 bNAb in the IgA-only lineage displayed the highest neutralizing capacity despite limited somatic mutation, and delayed viral rebound in humanized mice. bNAbs in all three lineages targeted the N332 glycan supersite. The 2.8-Å resolution cryo-EM structure of 7-269-BG505 SOSIP.664 complex showed a similar pose as 2G12, on an epitope mainly composed of sugar residues comprising the N332 and N295 glycans. Binding and cryo-EM structural analyses showed that antibodies from the two other lineages interact mostly with glycans N332 and N386. Hence, multiple B cell lineages of IgG and IgA bNAbs focused on a unique HIV-1 site of vulnerability can codevelop in HIV-1 viremic controllers.
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Affiliation(s)
- Valérie Lorin
- Laboratory of Humoral Immunology, Department of Immunology, Institut Pasteur, Paris, France.,Institut national de la santé et de la recherche médicale U1222, Paris, France.,Université de Paris, Sorbonne Paris Cité, Paris, France
| | - Ignacio Fernández
- Structural Virology Unit, Department of Virology, Institut Pasteur, Paris, France.,Centre national de la recherche scientifique URA3015, Paris, France
| | - Guillemette Masse-Ranson
- Innate Immunity Unit, Department of Immunology, Institut Pasteur, Paris, France.,Institut national de la santé et de la recherche médicale U1223, Paris, France
| | - Mélanie Bouvin-Pley
- Université de Tours, Institut national de la santé et de la recherche médicale U1259, Tours, France
| | - Luis M Molinos-Albert
- Laboratory of Humoral Immunology, Department of Immunology, Institut Pasteur, Paris, France.,Institut national de la santé et de la recherche médicale U1222, Paris, France
| | - Cyril Planchais
- Laboratory of Humoral Immunology, Department of Immunology, Institut Pasteur, Paris, France.,Institut national de la santé et de la recherche médicale U1222, Paris, France
| | - Thierry Hieu
- Laboratory of Humoral Immunology, Department of Immunology, Institut Pasteur, Paris, France.,Institut national de la santé et de la recherche médicale U1222, Paris, France
| | - Gérard Péhau-Arnaudet
- Imagopole, Plate-Forme de Microscopie Ultrastructurale and UMR 3528, Institut Pasteur, Paris, France
| | - Dominik Hrebík
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Giulia Girelli-Zubani
- Innate Immunity Unit, Department of Immunology, Institut Pasteur, Paris, France.,Institut national de la santé et de la recherche médicale U1223, Paris, France
| | - Oriane Fiquet
- Innate Immunity Unit, Department of Immunology, Institut Pasteur, Paris, France.,Institut national de la santé et de la recherche médicale U1223, Paris, France
| | - Florence Guivel-Benhassine
- Centre national de la recherche scientifique URA3015, Paris, France.,Virus and Immunity Unit, Department of Virology, Institut Pasteur, Paris, France
| | - Rogier W Sanders
- Department of Medical Microbiology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands.,Department of Microbiology and Immunology, Weill Medical College of Cornell University, New York, NY
| | - Bruce D Walker
- Ragon Institute of Massachusetts General Hospital, MIT, and Harvard, Cambridge, MA.,Partners AIDS Research Center, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA
| | - Olivier Schwartz
- Centre national de la recherche scientifique URA3015, Paris, France.,Virus and Immunity Unit, Department of Virology, Institut Pasteur, Paris, France
| | - Johannes F Scheid
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY
| | - Jordan D Dimitrov
- Centre de Recherche des Cordeliers, Institut national de la santé et de la recherche médicale, Sorbonne Université, Université de Paris, Paris, France
| | - Pavel Plevka
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Martine Braibant
- Université de Tours, Institut national de la santé et de la recherche médicale U1259, Tours, France
| | | | - François Bontems
- Structural Virology Unit, Department of Virology, Institut Pasteur, Paris, France.,Institut de Chimie des Substances Naturelles, Centre national de la recherche scientifique, Université Paris Saclay, Gif-sur-Yvette, France
| | - James P Di Santo
- Innate Immunity Unit, Department of Immunology, Institut Pasteur, Paris, France.,Institut national de la santé et de la recherche médicale U1223, Paris, France
| | - Félix A Rey
- Structural Virology Unit, Department of Virology, Institut Pasteur, Paris, France.,Centre national de la recherche scientifique URA3015, Paris, France
| | - Hugo Mouquet
- Laboratory of Humoral Immunology, Department of Immunology, Institut Pasteur, Paris, France.,Institut national de la santé et de la recherche médicale U1222, Paris, France
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17
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Planas D, Saunders N, Maes P, Guivel-Benhassine F, Planchais C, Buchrieser J, Bolland WH, Porrot F, Staropoli I, Lemoine F, Péré H, Veyer D, Puech J, Rodary J, Baele G, Dellicour S, Raymenants J, Gorissen S, Geenen C, Vanmechelen B, Wawina-Bokalanga T, Martí-Carreras J, Cuypers L, Sève A, Hocqueloux L, Prazuck T, Rey FA, Simon-Loriere E, Bruel T, Mouquet H, André E, Schwartz O. Considerable escape of SARS-CoV-2 Omicron to antibody neutralization. Nature 2022; 602:671-675. [PMID: 35016199 DOI: 10.1101/2021.12.14.472630] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [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: 12/10/2021] [Accepted: 12/23/2021] [Indexed: 05/27/2023]
Abstract
The SARS-CoV-2 Omicron variant was first identified in November 2021 in Botswana and South Africa1-3. It has since spread to many countries and is expected to rapidly become dominant worldwide. The lineage is characterized by the presence of around 32 mutations in spike-located mostly in the N-terminal domain and the receptor-binding domain-that may enhance viral fitness and enable antibody evasion. Here we isolated an infectious Omicron virus in Belgium from a traveller returning from Egypt. We examined its sensitivity to nine monoclonal antibodies that have been clinically approved or are in development4, and to antibodies present in 115 serum samples from COVID-19 vaccine recipients or individuals who have recovered from COVID-19. Omicron was completely or partially resistant to neutralization by all monoclonal antibodies tested. Sera from recipients of the Pfizer or AstraZeneca vaccine, sampled five months after complete vaccination, barely inhibited Omicron. Sera from COVID-19-convalescent patients collected 6 or 12 months after symptoms displayed low or no neutralizing activity against Omicron. Administration of a booster Pfizer dose as well as vaccination of previously infected individuals generated an anti-Omicron neutralizing response, with titres 6-fold to 23-fold lower against Omicron compared with those against Delta. Thus, Omicron escapes most therapeutic monoclonal antibodies and, to a large extent, vaccine-elicited antibodies. However, Omicron is neutralized by antibodies generated by a booster vaccine dose.
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Affiliation(s)
- Delphine Planas
- Virus and Immunity Unit, Institut Pasteur, Université de Paris, CNRS UMR3569, Paris, France
- Vaccine Research Institute, Créteil, France
| | - Nell Saunders
- Virus and Immunity Unit, Institut Pasteur, Université de Paris, CNRS UMR3569, Paris, France
- École Doctorale BioSPC 562, Université de Paris, Paris, France
| | - Piet Maes
- Department of Microbiology, Laboratory of Clinical and Epidemiological Virology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | | | - Cyril Planchais
- Humoral Immunology Laboratory, Institut Pasteur, Université de Paris, INSERM U1222, Paris, France
| | - Julian Buchrieser
- Virus and Immunity Unit, Institut Pasteur, Université de Paris, CNRS UMR3569, Paris, France
| | - William-Henry Bolland
- Virus and Immunity Unit, Institut Pasteur, Université de Paris, CNRS UMR3569, Paris, France
- École Doctorale BioSPC 562, Université de Paris, Paris, France
| | - Françoise Porrot
- Virus and Immunity Unit, Institut Pasteur, Université de Paris, CNRS UMR3569, Paris, France
| | - Isabelle Staropoli
- Virus and Immunity Unit, Institut Pasteur, Université de Paris, CNRS UMR3569, Paris, France
| | - Frederic Lemoine
- Hub de Bioinformatique et Biostatistique, Institut Pasteur, Université de Paris, CNRS USR 3756, Paris, France
| | - Hélène Péré
- Laboratoire de Virologie, Service de Microbiologie, Hôpital Européen Georges Pompidou, Paris, France
- Functional Genomics of Solid Tumors (FunGeST), Centre de Recherche des Cordelier, INSERM, Université de Paris, Sorbonne Université, Paris, France
| | - David Veyer
- Laboratoire de Virologie, Service de Microbiologie, Hôpital Européen Georges Pompidou, Paris, France
- Functional Genomics of Solid Tumors (FunGeST), Centre de Recherche des Cordelier, INSERM, Université de Paris, Sorbonne Université, Paris, France
| | - Julien Puech
- Laboratoire de Virologie, Service de Microbiologie, Hôpital Européen Georges Pompidou, Paris, France
| | - Julien Rodary
- Laboratoire de Virologie, Service de Microbiologie, Hôpital Européen Georges Pompidou, Paris, France
| | - Guy Baele
- Department of Microbiology, Laboratory of Clinical and Epidemiological Virology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Simon Dellicour
- Department of Microbiology, Laboratory of Clinical and Epidemiological Virology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
- Spatial Epidemiology Lab (SpELL), Université Libre de Bruxelles, Brussels, Belgium
| | - Joren Raymenants
- Laboratory of Clinical Microbiology, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Sarah Gorissen
- Laboratory of Clinical Microbiology, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Caspar Geenen
- Laboratory of Clinical Microbiology, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Bert Vanmechelen
- Department of Microbiology, Laboratory of Clinical and Epidemiological Virology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Tony Wawina-Bokalanga
- Department of Microbiology, Laboratory of Clinical and Epidemiological Virology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Joan Martí-Carreras
- Department of Microbiology, Laboratory of Clinical and Epidemiological Virology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Lize Cuypers
- Department of Laboratory Medicine, National Reference Centre for Respiratory Pathogens, University Hospitals Leuven, Leuven, Belgium
| | - Aymeric Sève
- Service de Maladies Infectieuses, CHR d'Orléans, Orléans, France
| | | | - Thierry Prazuck
- Service de Maladies Infectieuses, CHR d'Orléans, Orléans, France
| | - Félix A Rey
- Structural Virology Unit, Institut Pasteur, Université de Paris, CNRS UMR3569, Paris, France
| | - Etienne Simon-Loriere
- G5 Evolutionary Genomics of RNA Viruses, Institut Pasteur, Université de Paris, Paris, France
| | - Timothée Bruel
- Virus and Immunity Unit, Institut Pasteur, Université de Paris, CNRS UMR3569, Paris, France.
- Vaccine Research Institute, Créteil, France.
| | - Hugo Mouquet
- Humoral Immunology Laboratory, Institut Pasteur, Université de Paris, INSERM U1222, Paris, France.
| | - Emmanuel André
- Laboratory of Clinical Microbiology, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium.
- Department of Laboratory Medicine, National Reference Centre for Respiratory Pathogens, University Hospitals Leuven, Leuven, Belgium.
| | - Olivier Schwartz
- Virus and Immunity Unit, Institut Pasteur, Université de Paris, CNRS UMR3569, Paris, France.
- Vaccine Research Institute, Créteil, France.
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18
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Guardado-Calvo P, Rey FA. The Viral Class II Membrane Fusion Machinery: Divergent Evolution from an Ancestral Heterodimer. Viruses 2021; 13:v13122368. [PMID: 34960636 PMCID: PMC8706100 DOI: 10.3390/v13122368] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/24/2021] [Accepted: 11/25/2021] [Indexed: 02/06/2023] Open
Abstract
A key step during the entry of enveloped viruses into cells is the merger of viral and cell lipid bilayers. This process is driven by a dedicated membrane fusion protein (MFP) present at the virion surface, which undergoes a membrane–fusogenic conformational change triggered by interactions with the target cell. Viral MFPs have been extensively studied structurally, and are divided into three classes depending on their three-dimensional fold. Because MFPs of the same class are found in otherwise unrelated viruses, their intra-class structural homology indicates horizontal gene exchange. We focus this review on the class II fusion machinery, which is composed of two glycoproteins that associate as heterodimers. They fold together in the ER of infected cells such that the MFP adopts a conformation primed to react to specific clues only upon contact with a target cell, avoiding premature fusion in the producer cell. We show that, despite having diverged in their 3D fold during evolution much more than the actual MFP, the class II accompanying proteins (AP) also derive from a distant common ancestor, displaying an invariant core formed by a β-ribbon and a C-terminal immunoglobulin-like domain playing different functional roles—heterotypic interactions with the MFP, and homotypic AP/AP contacts to form spikes, respectively. Our analysis shows that class II APs are easily identifiable with modern structural prediction algorithms, providing useful information in devising immunogens for vaccine design.
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19
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Light TP, Brun D, Guardado-Calvo P, Pederzoli R, Haouz A, Neipel F, Rey FA, Hristova K, Backovic M. Human herpesvirus 8 molecular mimicry of ephrin ligands facilitates cell entry and triggers EphA2 signaling. PLoS Biol 2021; 19:e3001392. [PMID: 34499637 PMCID: PMC8454987 DOI: 10.1371/journal.pbio.3001392] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 09/21/2021] [Accepted: 08/16/2021] [Indexed: 01/19/2023] Open
Abstract
Human herpesvirus 8 (HHV-8) is an oncogenic virus that enters cells by fusion of the viral and endosomal cellular membranes in a process mediated by viral surface glycoproteins. One of the cellular receptors hijacked by HHV-8 to gain access to cells is the EphA2 tyrosine kinase receptor, and the mechanistic basis of EphA2-mediated viral entry remains unclear. Using X-ray structure analysis, targeted mutagenesis, and binding studies, we here show that the HHV-8 envelope glycoprotein complex H and L (gH/gL) binds with subnanomolar affinity to EphA2 via molecular mimicry of the receptor’s cellular ligands, ephrins (Eph family receptor interacting proteins), revealing a pivotal role for the conserved gH residue E52 and the amino-terminal peptide of gL. Using FSI-FRET and cell contraction assays, we further demonstrate that the gH/gL complex also functionally mimics ephrin ligand by inducing EphA2 receptor association via its dimerization interface, thus triggering receptor signaling for cytoskeleton remodeling. These results now provide novel insight into the entry mechanism of HHV-8, opening avenues for the search of therapeutic agents that could interfere with HHV-8–related diseases. Herpesviruses are known to hijack cellular receptors to enter cells, but this study shows that human herpesvirus 8 takes this to another level by using its envelope glycoprotein complex gH/gL to mimic the EphA2 receptor’s natural ligands, ephrins.
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Affiliation(s)
- Taylor P Light
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America.,Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Delphine Brun
- Department of Virology, Structural Virology Unit, Institut Pasteur, Paris, France.,CNRS, UMR 3569, Paris, France
| | - Pablo Guardado-Calvo
- Department of Virology, Structural Virology Unit, Institut Pasteur, Paris, France.,CNRS, UMR 3569, Paris, France
| | - Riccardo Pederzoli
- Department of Virology, Structural Virology Unit, Institut Pasteur, Paris, France.,CNRS, UMR 3569, Paris, France
| | - Ahmed Haouz
- CNRS, UMR 3569, Paris, France.,Crystallography Platform C2RT, Institut Pasteur, Paris, France
| | - Frank Neipel
- Crystallography Platform C2RT, Institut Pasteur, Paris, France
| | - Félix A Rey
- Department of Virology, Structural Virology Unit, Institut Pasteur, Paris, France.,CNRS, UMR 3569, Paris, France
| | - Kalina Hristova
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America.,Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Marija Backovic
- Department of Virology, Structural Virology Unit, Institut Pasteur, Paris, France.,CNRS, UMR 3569, Paris, France
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20
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Abstract
Hantaviruses are rodent-borne viruses distributed worldwide, transmitted through the air and with the ability to spread from person to person. They maintain a non-symptomatic persistent infection in their rodent hosts, but their spillover to humans produces a renal or pulmonary syndrome associated with high fatality rates. Hantavirus particles are lipid-enveloped and display a characteristic surface lattice built up of tetragonal spikes composed of two glycoproteins, Gn and Gc. The pleomorphism of these particles has hindered cryo-EM efforts to obtain detailed structural information and only by using a combination of X-ray crystallography and cryo-electron tomography it was possible to build an atomic model of the surface lattice. Here we review these structural efforts and the unanticipated evolutionary relations between hantaviruses and alphaviruses highlighted by these studies.
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Affiliation(s)
| | - Félix A Rey
- Institut Pasteur, Structural Virology Unit, and CNRS UMR 3569, Paris, France
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21
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Zhang J, Pinello JF, Fernández I, Baquero E, Fedry J, Rey FA, Snell WJ. Species-specific gamete recognition initiates fusion-driving trimer formation by conserved fusogen HAP2. Nat Commun 2021; 12:4380. [PMID: 34282138 PMCID: PMC8289870 DOI: 10.1038/s41467-021-24613-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 06/15/2021] [Indexed: 12/02/2022] Open
Abstract
Recognition and fusion between gametes during fertilization is an ancient process. Protein HAP2, recognized as the primordial eukaryotic gamete fusogen, is a structural homolog of viral class II fusion proteins. The mechanisms that regulate HAP2 function, and whether virus-fusion-like conformational changes are involved, however, have not been investigated. We report here that fusion between plus and minus gametes of the green alga Chlamydomonas indeed requires an obligate conformational rearrangement of HAP2 on minus gametes from a labile, prefusion form into the stable homotrimers observed in structural studies. Activation of HAP2 to undergo its fusogenic conformational change occurs only upon species-specific adhesion between the two gamete membranes. Following a molecular mechanism akin to fusion of enveloped viruses, the membrane insertion capacity of the fusion loop is required to couple formation of trimers to gamete fusion. Thus, species-specific membrane attachment is the gateway to fusion-driving HAP2 rearrangement into stable trimers. HAP2 is essential for gamete fusion during fertilization and is conserved among eukaryotes. Here the authors show that species-specific adhesion between Chlamydomonas plus and minus gametes initiates HAP2 to undergo a fusogenic conformational change into homotrimers via a molecular mechanism akin to that of enveloped viruses.
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Affiliation(s)
- Jun Zhang
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, USA
| | - Jennifer F Pinello
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, USA
| | - Ignacio Fernández
- Unité de Virologie Structurale, Virology Department and CNRS UMR 3569, Institut Pasteur, Paris, France
| | - Eduard Baquero
- Unité de Virologie Structurale, Virology Department and CNRS UMR 3569, Institut Pasteur, Paris, France
| | - Juliette Fedry
- Unité de Virologie Structurale, Virology Department and CNRS UMR 3569, Institut Pasteur, Paris, France
| | - Félix A Rey
- Unité de Virologie Structurale, Virology Department and CNRS UMR 3569, Institut Pasteur, Paris, France
| | - William J Snell
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, USA.
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22
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Walls AC, Xiong X, Park YJ, Tortorici MA, Snijder J, Quispe J, Cameroni E, Gopal R, Dai M, Lanzavecchia A, Zambon M, Rey FA, Corti D, Veesler D. Unexpected Receptor Functional Mimicry Elucidates Activation of Coronavirus Fusion. Cell 2020; 183:1732. [PMID: 33306956 PMCID: PMC7834669 DOI: 10.1016/j.cell.2020.11.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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23
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Vollmer B, Pražák V, Vasishtan D, Jefferys EE, Hernandez-Duran A, Vallbracht M, Klupp BG, Mettenleiter TC, Backovic M, Rey FA, Topf M, Grünewald K. The prefusion structure of herpes simplex virus glycoprotein B. Sci Adv 2020; 6:eabc1726. [PMID: 32978151 PMCID: PMC7518877 DOI: 10.1126/sciadv.abc1726] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 08/12/2020] [Indexed: 05/03/2023]
Abstract
Cell entry of enveloped viruses requires specialized viral proteins that mediate fusion with the host membrane by substantial structural rearrangements from a metastable pre- to a stable postfusion conformation. This metastability renders the herpes simplex virus 1 (HSV-1) fusion glycoprotein B (gB) highly unstable such that it readily converts into the postfusion form, thereby precluding structural elucidation of the pharmacologically relevant prefusion conformation. By identification of conserved sequence signatures and molecular dynamics simulations, we devised a mutation that stabilized this form. Functionally locking gB allowed the structural determination of its membrane-embedded prefusion conformation at sub-nanometer resolution and enabled the unambiguous fit of all ectodomains. The resulting pseudo-atomic model reveals a notable conservation of conformational domain rearrangements during fusion between HSV-1 gB and the vesicular stomatitis virus glycoprotein G, despite their very distant phylogeny. In combination with our comparative sequence-structure analysis, these findings suggest common fusogenic domain rearrangements in all class III viral fusion proteins.
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Affiliation(s)
- B Vollmer
- Oxford Particle Imaging Centre, Department of Structural Biology, Wellcome Centre Human Genetics, University of Oxford, Oxford, UK
- Centre for Structural Systems Biology, Heinrich-Pette-Institut, Leibniz-Institut für Experimentelle Virologie, Hamburg, Germany
| | - V Pražák
- Oxford Particle Imaging Centre, Department of Structural Biology, Wellcome Centre Human Genetics, University of Oxford, Oxford, UK
| | - D Vasishtan
- Oxford Particle Imaging Centre, Department of Structural Biology, Wellcome Centre Human Genetics, University of Oxford, Oxford, UK
| | - E E Jefferys
- Department of Biochemistry, University of Oxford, Oxford, UK
| | | | - M Vallbracht
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Insel Riems, Germany
| | - B G Klupp
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Insel Riems, Germany
| | - T C Mettenleiter
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Insel Riems, Germany
| | - M Backovic
- Institut Pasteur, Structural Virology Unit, Department of Virology, Paris, France
| | - F A Rey
- Institut Pasteur, Structural Virology Unit, Department of Virology, Paris, France
| | - M Topf
- Institute of Structural and Molecular Biology, Birkbeck, London, UK
| | - K Grünewald
- Oxford Particle Imaging Centre, Department of Structural Biology, Wellcome Centre Human Genetics, University of Oxford, Oxford, UK.
- Centre for Structural Systems Biology, Heinrich-Pette-Institut, Leibniz-Institut für Experimentelle Virologie, Hamburg, Germany
- Department of Chemistry, MIN Faculty, Universität Hamburg, Hamburg, Germany
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24
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Wichgers Schreur PJ, van de Water S, Harmsen M, Bermúdez-Méndez E, Drabek D, Grosveld F, Wernike K, Beer M, Aebischer A, Daramola O, Rodriguez Conde S, Brennan K, Kozub D, Søndergaard Kristiansen M, Mistry KK, Deng Z, Hellert J, Guardado-Calvo P, Rey FA, van Keulen L, Kortekaas J. Multimeric single-domain antibody complexes protect against bunyavirus infections. eLife 2020; 9:52716. [PMID: 32314955 PMCID: PMC7173960 DOI: 10.7554/elife.52716] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 10/14/2019] [Accepted: 04/11/2020] [Indexed: 12/25/2022] Open
Abstract
The World Health Organization has included three bunyaviruses posing an increasing threat to human health on the Blueprint list of viruses likely to cause major epidemics and for which no, or insufficient countermeasures exist. Here, we describe a broadly applicable strategy, based on llama-derived single-domain antibodies (VHHs), for the development of bunyavirus biotherapeutics. The method was validated using the zoonotic Rift Valley fever virus (RVFV) and Schmallenberg virus (SBV), an emerging pathogen of ruminants, as model pathogens. VHH building blocks were assembled into highly potent neutralizing complexes using bacterial superglue technology. The multimeric complexes were shown to reduce and prevent virus-induced morbidity and mortality in mice upon prophylactic administration. Bispecific molecules engineered to present two different VHHs fused to an Fc domain were further shown to be effective upon therapeutic administration. The presented VHH-based technology holds great promise for the development of bunyavirus antiviral therapies.
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Affiliation(s)
| | - Sandra van de Water
- Department of Virology, Wageningen Bioveterinary Research, Lelystad, Netherlands
| | - Michiel Harmsen
- Department of Virology, Wageningen Bioveterinary Research, Lelystad, Netherlands
| | - Erick Bermúdez-Méndez
- Department of Virology, Wageningen Bioveterinary Research, Lelystad, Netherlands.,Laboratory of Virology, Wageningen University, Wageningen, Netherlands
| | - Dubravka Drabek
- Department of Cell Biology, Erasmus MC, Rotterdam, Netherlands.,Harbour Antibodies B.V, Rotterdam, Netherlands
| | - Frank Grosveld
- Department of Cell Biology, Erasmus MC, Rotterdam, Netherlands.,Harbour Antibodies B.V, Rotterdam, Netherlands
| | - Kerstin Wernike
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Greifswald - Insel Riems, Germany
| | - Martin Beer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Greifswald - Insel Riems, Germany
| | - Andrea Aebischer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Greifswald - Insel Riems, Germany
| | - Olalekan Daramola
- Biopharmaceutical Development, R&D BioPharmaceuticals, AstraZeneca, Cambridge, United Kingdom
| | - Sara Rodriguez Conde
- Biopharmaceutical Development, R&D BioPharmaceuticals, AstraZeneca, Cambridge, United Kingdom
| | - Karen Brennan
- Biopharmaceutical Development, R&D BioPharmaceuticals, AstraZeneca, Cambridge, United Kingdom
| | - Dorota Kozub
- Biopharmaceutical Development, R&D BioPharmaceuticals, AstraZeneca, Cambridge, United Kingdom
| | | | - Kieran K Mistry
- Biopharmaceutical Development, R&D BioPharmaceuticals, AstraZeneca, Cambridge, United Kingdom
| | - Ziyan Deng
- Biopharmaceutical Development, R&D BioPharmaceuticals, AstraZeneca, Cambridge, United Kingdom
| | - Jan Hellert
- Structural Virology Unit, Virology Department, CNRS UMR 3569, Institut Pasteur, Paris, France
| | - Pablo Guardado-Calvo
- Structural Virology Unit, Virology Department, CNRS UMR 3569, Institut Pasteur, Paris, France
| | - Félix A Rey
- Structural Virology Unit, Virology Department, CNRS UMR 3569, Institut Pasteur, Paris, France
| | - Lucien van Keulen
- Department of Virology, Wageningen Bioveterinary Research, Lelystad, Netherlands
| | - Jeroen Kortekaas
- Department of Virology, Wageningen Bioveterinary Research, Lelystad, Netherlands.,Laboratory of Virology, Wageningen University, Wageningen, Netherlands
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25
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Wec AZ, Haslwanter D, Abdiche YN, Shehata L, Pedreño-Lopez N, Moyer CL, Bornholdt ZA, Lilov A, Nett JH, Jangra RK, Brown M, Watkins DI, Ahlm C, Forsell MN, Rey FA, Barba-Spaeth G, Chandran K, Walker LM. Longitudinal dynamics of the human B cell response to the yellow fever 17D vaccine. Proc Natl Acad Sci U S A 2020; 117:6675-6685. [PMID: 32152119 PMCID: PMC7104296 DOI: 10.1073/pnas.1921388117] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
A comprehensive understanding of the development and evolution of human B cell responses induced by pathogen exposure will facilitate the design of next-generation vaccines. Here, we utilized a high-throughput single B cell cloning technology to longitudinally track the human B cell response to the yellow fever virus 17D (YFV-17D) vaccine. The early memory B cell (MBC) response was mediated by both classical immunoglobulin M (IgM) (IgM+CD27+) and switched immunoglobulin (swIg+) MBC populations; however, classical IgM MBCs waned rapidly, whereas swIg+ and atypical IgM+ and IgD+ MBCs were stable over time. Affinity maturation continued for 6 to 9 mo following vaccination, providing evidence for the persistence of germinal center activity long after the period of active viral replication in peripheral blood. Finally, a substantial fraction of the neutralizing antibody response was mediated by public clones that recognize a fusion loop-proximal antigenic site within domain II of the viral envelope glycoprotein. Overall, our findings provide a framework for understanding the dynamics and complexity of human B cell responses elicited by infection and vaccination.
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Affiliation(s)
| | - Denise Haslwanter
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461
| | | | | | | | | | | | | | | | - Rohit K Jangra
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461
| | | | - David I Watkins
- Department of Pathology, University of Miami, Miami, FL 33146
| | - Clas Ahlm
- Division of Infection & Immunology, Department of Clinical Microbiology, Umeå University, 90187 Umeå, Sweden
| | - Mattias N Forsell
- Division of Infection & Immunology, Department of Clinical Microbiology, Umeå University, 90187 Umeå, Sweden
| | - Félix A Rey
- Structural Virology Unit, CNRS UMR 3569, Virology Department, Institut Pasteur, 75015 Paris, France
| | - Giovanna Barba-Spaeth
- Structural Virology Unit, CNRS UMR 3569, Virology Department, Institut Pasteur, 75015 Paris, France
| | - Kartik Chandran
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461
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26
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Hellert J, Buchrieser J, Larrous F, Minola A, de Melo GD, Soriaga L, England P, Haouz A, Telenti A, Schwartz O, Corti D, Bourhy H, Rey FA. Structure of the prefusion-locking broadly neutralizing antibody RVC20 bound to the rabies virus glycoprotein. Nat Commun 2020; 11:596. [PMID: 32001700 PMCID: PMC6992781 DOI: 10.1038/s41467-020-14398-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 01/02/2020] [Indexed: 10/25/2022] Open
Abstract
Rabies virus (RABV) causes fatal encephalitis in more than 59,000 people yearly. Upon the bite of an infected animal, the development of clinical disease can be prevented with post-exposure prophylaxis (PEP), which includes the administration of Rabies immunoglobulin (RIG). However, the high cost and limited availability of serum-derived RIG severely hamper its wide use in resource-limited countries. A safe low-cost alternative is provided by using broadly neutralizing monoclonal antibodies (bnAbs). Here we report the X-ray structure of one of the most potent and most broadly reactive human bnAbs, RVC20, in complex with its target domain III of the RABV glycoprotein (G). The structure reveals that the RVC20 binding determinants reside in a highly conserved surface of G, rationalizing its broad reactivity. We further show that RVC20 blocks the acid-induced conformational change required for membrane fusion. Our results may guide the future development of direct antiviral small molecules for Rabies treatment.
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Affiliation(s)
- Jan Hellert
- Structural Virology Unit, Institut Pasteur, CNRS UMR 3569, 25-28 rue du Docteur Roux, Cedex 15, 75724, Paris, France
| | - Julian Buchrieser
- Virus and Immunity Unit, Institut Pasteur, CNRS UMR 3569, 25-28 rue du Docteur Roux, Cedex 15, 75724, Paris, France
| | - Florence Larrous
- Lyssavirus Epidemiology and Neuropathology Unit, Institut Pasteur, 25-28 rue du Docteur Roux, Cedex 15, 75724, Paris, France
| | - Andrea Minola
- Humabs BioMed SA, a subsidiary of Vir Biotechnology Inc., Via dei Gaggini 3, 6500, Bellinzona, Switzerland
| | - Guilherme Dias de Melo
- Lyssavirus Epidemiology and Neuropathology Unit, Institut Pasteur, 25-28 rue du Docteur Roux, Cedex 15, 75724, Paris, France
| | - Leah Soriaga
- Vir Biotechnology Inc, San Francisco, CA, 94158, USA
| | - Patrick England
- Molecular Biophysics Platform C2RT, Institut Pasteur, CNRS UMR 3528, 25-28 rue du Docteur Roux, Cedex 15, 75724, Paris, France
| | - Ahmed Haouz
- Crystallography Platform C2RT, Institut Pasteur, CNRS UMR 3528, 25-28 rue du Dr. Roux, Cedex 15, 75724, Paris, France
| | | | - Olivier Schwartz
- Virus and Immunity Unit, Institut Pasteur, CNRS UMR 3569, 25-28 rue du Docteur Roux, Cedex 15, 75724, Paris, France
| | - Davide Corti
- Humabs BioMed SA, a subsidiary of Vir Biotechnology Inc., Via dei Gaggini 3, 6500, Bellinzona, Switzerland
| | - Hervé Bourhy
- Lyssavirus Epidemiology and Neuropathology Unit, Institut Pasteur, 25-28 rue du Docteur Roux, Cedex 15, 75724, Paris, France.
| | - Félix A Rey
- Structural Virology Unit, Institut Pasteur, CNRS UMR 3569, 25-28 rue du Docteur Roux, Cedex 15, 75724, Paris, France.
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Bignon EA, Albornoz A, Guardado-Calvo P, Rey FA, Tischler ND. Molecular organization and dynamics of the fusion protein Gc at the hantavirus surface. eLife 2019; 8:46028. [PMID: 31180319 PMCID: PMC6609335 DOI: 10.7554/elife.46028] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [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: 02/12/2019] [Accepted: 06/10/2019] [Indexed: 01/01/2023] Open
Abstract
The hantavirus envelope glycoproteins Gn and Gc mediate virion assembly and cell entry, with Gc driving fusion of viral and endosomal membranes. Although the X-ray structures and overall arrangement of Gn and Gc on the hantavirus spikes are known, their detailed interactions are not. Here we show that the lateral contacts between spikes are mediated by the same 2-fold contacts observed in Gc crystals at neutral pH, allowing the engineering of disulfide bonds to cross-link spikes. Disrupting the observed dimer interface affects particle assembly and overall spike stability. We further show that the spikes display a temperature-dependent dynamic behavior at neutral pH, alternating between ‘open’ and ‘closed’ forms. We show that the open form exposes the Gc fusion loops but is off-pathway for productive Gc-induced membrane fusion and cell entry. These data also provide crucial new insights for the design of optimized Gn/Gc immunogens to elicit protective immune responses. Hantaviruses infect rodents and other small mammals, but do not harm them. When transmitted to humans, often through rodent urine, feces or saliva, they can cause serious and even fatal diseases. Currently, there are no known methods that effectively prevent hantavirus infections or treat the diseases that they cause. During an infection, viruses invade the cells of their host. A hantavirus interacts with target cells through proteins on its surface called Gn and Gc glycoproteins. Previous work has shown that these glycoproteins are organized in bundles of four Gn and four Gc proteins, termed spikes, which project from the membrane that surrounds the virus. The Gc protein changes shape when it is activated and exposes a hidden region that can insert into the membrane of the target cell. The Gc proteins then change shape again to force the cell to fuse with the viral membrane. This process allows the virus to be taken up into the cell, where it can replicate. While the structures of each viral glycoprotein have been determined in isolation, it was not known how they interact within the Gn/Gc spike. Such information is crucial to understand how the viruses infect cells and which areas are exposed to the immune system of the host – and so could be targeted by antiviral treatments. Bignon et al. have now identified the molecular contacts that occur between spikes and interconnect them into a grid-like lattice on the surface of the virus. Genetically altering specific sections of the Gc glycoprotein strengthened or weakened these contacts, which correspondingly increased or decreased how stable the spike was. Preventing the contacts from forming resulted in cells releasing fewer virus-like particles. Bignon et al. also show that at the body temperature of mammals, the shape of the spike fluctuates between an ‘open’ form that exposes the region of Gc that inserts into the cell membrane, and a ‘closed’ form that hides this region. However, when Gc is activated, the open form becomes unable to cause the viral and cell membranes to fuse together. Together, the results presented by Bignon et al. help us to understand how changes to the hantavirus surface enable the virus to infect cells. This knowledge will help researchers to design vaccines that protect against hantavirus infections.
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Affiliation(s)
- Eduardo A Bignon
- Laboratorio de Virología Molecular, Fundación Ciencia & Vida, Santiago, Chile
| | - Amelina Albornoz
- Laboratorio de Virología Molecular, Fundación Ciencia & Vida, Santiago, Chile
| | - Pablo Guardado-Calvo
- Structural Virology Unit, Virology Department, Institut Pasteur, CNRS UMR 3569, Paris, France
| | - Félix A Rey
- Structural Virology Unit, Virology Department, Institut Pasteur, CNRS UMR 3569, Paris, France
| | - Nicole D Tischler
- Laboratorio de Virología Molecular, Fundación Ciencia & Vida, Santiago, Chile
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Hellert J, Aebischer A, Wernike K, Haouz A, Brocchi E, Reiche S, Guardado-Calvo P, Beer M, Rey FA. Orthobunyavirus spike architecture and recognition by neutralizing antibodies. Nat Commun 2019; 10:879. [PMID: 30787296 PMCID: PMC6382863 DOI: 10.1038/s41467-019-08832-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 01/29/2019] [Indexed: 12/29/2022] Open
Abstract
Orthobunyaviruses (OBVs) form a distinct genus of arthropod-borne bunyaviruses that can cause severe disease upon zoonotic transmission to humans. Antigenic drift or genome segment re-assortment have in the past resulted in new pathogenic OBVs, making them potential candidates for causing emerging zoonoses in the future. Low-resolution electron cryo-tomography studies have shown that OBV particles feature prominent trimeric spikes, but their molecular organization remained unknown. Here we report X-ray crystallography studies of four different OBVs showing that the spikes are formed by an N-terminal extension of the fusion glycoprotein Gc. Using Schmallenberg virus, a recently emerged OBV, we also show that the projecting spike is the major target of the neutralizing antibody response, and provide X-ray structures in complex with two protecting antibodies. We further show that immunization of mice with the spike domains elicits virtually sterilizing immunity, providing fundamental knowledge essential in the preparation for potential newly emerging OBV zoonoses. Orthobunyaviruses (OBVs) cause severe disease in humans and farm animals, but the molecular basis for infection is not fully understood. Here, the authors present crystal structures of free and antibody-bound OBV envelope glycoproteins and show that their domains enable efficient immunization in a mouse model.
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Affiliation(s)
- Jan Hellert
- Structural Virology Unit, Virology Department, Institut Pasteur, CNRS UMR 3569, 25-28 rue du Dr. Roux, 75015, Paris, France
| | - Andrea Aebischer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Südufer 10, 17493, Greifswald, Insel Riems, Germany
| | - Kerstin Wernike
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Südufer 10, 17493, Greifswald, Insel Riems, Germany
| | - Ahmed Haouz
- Crystallography Platform, Department of Structural Biology and Chemistry, Institut Pasteur, CNRS UMR 3528, 25-28 rue du Dr. Roux, 75015, Paris, France
| | - Emiliana Brocchi
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, Via Bianchi 7, 25125, Brescia, Italy
| | - Sven Reiche
- Department of Experimental Animal Facilities and Biorisk Management, Friedrich-Loeffler-Institut, Südufer 10, 17493, Greifswald, Insel Riems, Germany
| | - Pablo Guardado-Calvo
- Structural Virology Unit, Virology Department, Institut Pasteur, CNRS UMR 3569, 25-28 rue du Dr. Roux, 75015, Paris, France
| | - Martin Beer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Südufer 10, 17493, Greifswald, Insel Riems, Germany.
| | - Félix A Rey
- Structural Virology Unit, Virology Department, Institut Pasteur, CNRS UMR 3569, 25-28 rue du Dr. Roux, 75015, Paris, France.
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Walls AC, Xiong X, Park YJ, Tortorici MA, Snijder J, Quispe J, Cameroni E, Gopal R, Dai M, Lanzavecchia A, Zambon M, Rey FA, Corti D, Veesler D. Unexpected Receptor Functional Mimicry Elucidates Activation of Coronavirus Fusion. Cell 2019; 176:1026-1039.e15. [PMID: 30712865 PMCID: PMC6751136 DOI: 10.1016/j.cell.2018.12.028] [Citation(s) in RCA: 454] [Impact Index Per Article: 90.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 10/29/2018] [Accepted: 12/17/2018] [Indexed: 12/27/2022]
Abstract
Recent outbreaks of severe acute respiratory syndrome and Middle East respiratory syndrome, along with the threat of a future coronavirus-mediated pandemic, underscore the importance of finding ways to combat these viruses. The trimeric spike transmembrane glycoprotein S mediates entry into host cells and is the major target of neutralizing antibodies. To understand the humoral immune response elicited upon natural infections with coronaviruses, we structurally characterized the SARS-CoV and MERS-CoV S glycoproteins in complex with neutralizing antibodies isolated from human survivors. Although the two antibodies studied blocked attachment to the host cell receptor, only the anti-SARS-CoV S antibody triggered fusogenic conformational changes via receptor functional mimicry. These results provide a structural framework for understanding coronavirus neutralization by human antibodies and shed light on activation of coronavirus membrane fusion, which takes place through a receptor-driven ratcheting mechanism.
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Affiliation(s)
- Alexandra C Walls
- Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA
| | - Xiaoli Xiong
- Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA
| | - Young-Jun Park
- Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA
| | - M Alejandra Tortorici
- Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA; Institute Pasteur & CNRS UMR 3569, Unité de Virologie Structurale, 75015, Paris, France
| | - Joost Snijder
- Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA
| | - Joel Quispe
- Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA
| | | | - Robin Gopal
- National Infection Service, Public Health England, London NW9 5HT, UK
| | - Mian Dai
- Crick Worldwide Influenza Centre, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Antonio Lanzavecchia
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera italiana, 6500 Bellinzona, Switzerland
| | - Maria Zambon
- National Infection Service, Public Health England, London NW9 5HT, UK
| | - Félix A Rey
- Institute Pasteur & CNRS UMR 3569, Unité de Virologie Structurale, 75015, Paris, France
| | - Davide Corti
- Humabs Biomed SA, Vir Biotechnology, 6500 Bellinzona, Switzerland
| | - David Veesler
- Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA.
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31
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Klitting R, Roth L, Rey FA, de Lamballerie X. Molecular determinants of Yellow Fever Virus pathogenicity in Syrian Golden Hamsters: one mutation away from virulence. Emerg Microbes Infect 2018; 7:51. [PMID: 29593212 PMCID: PMC5874243 DOI: 10.1038/s41426-018-0053-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 02/07/2018] [Accepted: 02/11/2018] [Indexed: 11/12/2022]
Abstract
Yellow fever virus (Flavivirus genus) is an arthropod-borne pathogen, which can infect humans, causing a severe viscerotropic disease with a high mortality rate. Adapted viral strains allow the reproduction of yellow fever disease in hamsters with features similar to the human disease. Here, we used the Infectious Subgenomic Amplicons reverse genetics method to produce an equivalent to the hamster-virulent strain, Yellow Fever Ap7, by introducing a set of four synonymous and six nonsynonymous mutations into a single subgenomic amplicon, derived from the sequence of the Asibi strain. The resulting strain, Yellow Fever Ap7M, induced a disease similar to that described for Ap7 in terms of symptoms, weight evolution, viral loads in the liver and lethality. Using the same methodology, we produced mutant strains derived from either Ap7M or Asibi viruses and investigated the role of each of Ap7M nonsynonymous mutations in its in vivo phenotype. This allowed identifying key components of the virulence mechanism in hamsters. In Ap7M virus, the reversion of either E/Q27H or E/D155A mutations led to an important reduction of both virulence and in vivo replicative fitness. In addition, the introduction of the single D155A Ap7M mutation within the E protein of the Asibi virus was sufficient to drastically modify its phenotype in hamsters toward both a greater replication efficiency and virulence. Finally, inspection of the Asibi strain E protein structure combined to in vivo testing revealed the importance of an exposed α-helix in domain I, containing residues 154 and 155, for Ap7M virulence in hamsters.
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Affiliation(s)
- Raphaëlle Klitting
- UMR EPV: "Émergence des Pathologies Virales", Aix-Marseille University - IRD 190 - Inserm 1207 - EHESP - IHU Méditerranée Infection, 13385, Marseille Cedex 05, France.
| | - Laura Roth
- UMR EPV: "Émergence des Pathologies Virales", Aix-Marseille University - IRD 190 - Inserm 1207 - EHESP - IHU Méditerranée Infection, 13385, Marseille Cedex 05, France
| | - Félix A Rey
- Structural Virology Unit, Virology Department, Institut Pasteur, 75015, Paris, France
- CNRS UMR3569, Institut Pasteur, 75015, Paris, France
| | - Xavier de Lamballerie
- UMR EPV: "Émergence des Pathologies Virales", Aix-Marseille University - IRD 190 - Inserm 1207 - EHESP - IHU Méditerranée Infection, 13385, Marseille Cedex 05, France
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32
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Guardado-Calvo P, Atkovska K, Jeffers SA, Grau N, Backovic M, Pérez-Vargas J, de Boer SM, Tortorici MA, Pehau-Arnaudet G, Lepault J, England P, Rottier PJ, Bosch BJ, Hub JS, Rey FA. A glycerophospholipid-specific pocket in the RVFV class II fusion protein drives target membrane insertion. Science 2018; 358:663-667. [PMID: 29097548 DOI: 10.1126/science.aal2712] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 07/20/2017] [Accepted: 09/25/2017] [Indexed: 12/19/2022]
Abstract
The Rift Valley fever virus (RVFV) is transmitted by infected mosquitoes, causing severe disease in humans and livestock across Africa. We determined the x-ray structure of the RVFV class II fusion protein Gc in its postfusion form and in complex with a glycerophospholipid (GPL) bound in a conserved cavity next to the fusion loop. Site-directed mutagenesis and molecular dynamics simulations further revealed a built-in motif allowing en bloc insertion of the fusion loop into membranes, making few nonpolar side-chain interactions with the aliphatic moiety and multiple polar interactions with lipid head groups upon membrane restructuring. The GPL head-group recognition pocket is conserved in the fusion proteins of other arthropod-borne viruses, such as Zika and chikungunya viruses, which have recently caused major epidemics worldwide.
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Affiliation(s)
- P Guardado-Calvo
- Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France. .,UMR 3569 Virologie, CNRS-Institut Pasteur, 25-28 Rue du Docteur Roux, 75015 Paris, France
| | - K Atkovska
- Institute for Microbiology and Genetics, University of Goettingen, Justus-von-Liebig weg 11, 37077 Göttingen, Germany
| | - S A Jeffers
- Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France.,UMR 3569 Virologie, CNRS-Institut Pasteur, 25-28 Rue du Docteur Roux, 75015 Paris, France
| | - N Grau
- Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France.,UMR 3569 Virologie, CNRS-Institut Pasteur, 25-28 Rue du Docteur Roux, 75015 Paris, France
| | - M Backovic
- Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France.,UMR 3569 Virologie, CNRS-Institut Pasteur, 25-28 Rue du Docteur Roux, 75015 Paris, France
| | - J Pérez-Vargas
- Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France.,UMR 3569 Virologie, CNRS-Institut Pasteur, 25-28 Rue du Docteur Roux, 75015 Paris, France
| | - S M de Boer
- Virology Division, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - M A Tortorici
- Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France.,UMR 3569 Virologie, CNRS-Institut Pasteur, 25-28 Rue du Docteur Roux, 75015 Paris, France
| | - G Pehau-Arnaudet
- UMR 3528, CNRS, Institut Pasteur, 25-28 rue du Docteur Roux, 75015 Paris, France
| | - J Lepault
- Institut de Biologie Intégrative de la Cellule, CNRS (UMR 9198), Gif-sur-Yvette, France
| | - P England
- UMR 3528, CNRS, Institut Pasteur, 25-28 rue du Docteur Roux, 75015 Paris, France.,Proteopole, Plateforme de Biophysique des Macromolécules et de leurs Interactions (PFBMI), Institut Pasteur, 25-28 rue du Dr Roux, F-75724 Paris Cedex 15, France
| | - P J Rottier
- Virology Division, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - B J Bosch
- Virology Division, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - J S Hub
- Institute for Microbiology and Genetics, University of Goettingen, Justus-von-Liebig weg 11, 37077 Göttingen, Germany.
| | - F A Rey
- Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France. .,UMR 3569 Virologie, CNRS-Institut Pasteur, 25-28 Rue du Docteur Roux, 75015 Paris, France
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33
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Rey FA, Stiasny K, Vaney MC, Dellarole M, Heinz FX. The bright and the dark side of human antibody responses to flaviviruses: lessons for vaccine design. EMBO Rep 2018; 19:206-224. [PMID: 29282215 PMCID: PMC5797954 DOI: 10.15252/embr.201745302] [Citation(s) in RCA: 160] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 11/21/2017] [Accepted: 11/23/2017] [Indexed: 01/07/2023] Open
Abstract
Zika and dengue viruses belong to the Flavivirus genus, a close group of antigenically related viruses that cause significant arthropod-transmitted diseases throughout the globe. Although infection by a given flavivirus is thought to confer lifelong protection, some of the patient's antibodies cross-react with other flaviviruses without cross-neutralizing. The original antigenic sin phenomenon may amplify such antibodies upon subsequent heterologous flavivirus infection, potentially aggravating disease by antibody-dependent enhancement (ADE). The most striking example is provided by the four different dengue viruses, where infection by one serotype appears to predispose to more severe disease upon infection by a second one. A similar effect was postulated for sequential infections with Zika and dengue viruses. In this review, we analyze the molecular determinants of the dual antibody response to flavivirus infection or vaccination in humans. We highlight the role of conserved partially cryptic epitopes giving rise to cross-reacting and poorly neutralizing, ADE-prone antibodies. We end by proposing a strategy for developing an epitope-focused vaccine approach to avoid eliciting undesirable antibodies while focusing the immune system on producing protective antibodies only.
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Affiliation(s)
- Félix A Rey
- Structural Virology Unit, Virology Department, Institut Pasteur, Paris, France
- CNRS UMR 3569, Paris, France
| | - Karin Stiasny
- Center for Virology, Medical University of Vienna, Vienna, Austria
| | - Marie-Christine Vaney
- Structural Virology Unit, Virology Department, Institut Pasteur, Paris, France
- CNRS UMR 3569, Paris, France
| | - Mariano Dellarole
- Structural Virology Unit, Virology Department, Institut Pasteur, Paris, France
- CNRS UMR 3569, Paris, France
| | - Franz X Heinz
- Center for Virology, Medical University of Vienna, Vienna, Austria
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Rey FA, Stiasny K, Heinz FX. Flavivirus structural heterogeneity: implications for cell entry. Curr Opin Virol 2017; 24:132-139. [PMID: 28683393 PMCID: PMC6037290 DOI: 10.1016/j.coviro.2017.06.009] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [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: 04/13/2017] [Revised: 06/16/2017] [Accepted: 06/20/2017] [Indexed: 12/27/2022]
Abstract
The explosive spread of Zika virus is the most recent example of the threat imposed to human health by flaviviruses. High-resolution structures are available for several of these arthropod-borne viruses, revealing alternative icosahedral organizations of immature and mature virions. Incomplete proteolytic maturation, however, results in a cloud of highly heterogeneous mosaic particles. This heterogeneity is further expanded by a dynamic behavior of the viral envelope glycoproteins. The ensemble of heterogeneous and dynamic infectious particles circulating in infected hosts offers a range of alternative possible receptor interaction sites at their surfaces, potentially contributing to the broad flavivirus host-range and variation in tissue tropism. The potential synergy between heterogeneous particles in the circulating cloud thus provides an additional dimension to understand the unanticipated properties of Zika virus in its recent outbreaks.
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Affiliation(s)
- Félix A Rey
- Structural Virology Unit, Virology Department, Institut Pasteur, 25-28 rue du Dr Roux, 75015 Paris, France; CNRS UMR 3569, 25-28 rue du Dr Roux, 75015 Paris, France.
| | - Karin Stiasny
- Center for Virology, Medical University of Vienna, Kinderspitalgasse 15, 1090 Vienna, Austria
| | - Franz X Heinz
- Center for Virology, Medical University of Vienna, Kinderspitalgasse 15, 1090 Vienna, Austria.
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Abstract
The Bunyavirales Order encompasses nine families of enveloped viruses containing a single-stranded negative-sense RNA genome divided into three segments. The small (S) and large (L) segments encode proteins participating in genome replication in the infected cell cytoplasm. The middle (M) segment encodes the viral glycoproteins Gn and Gc, which are derived from a precursor polyprotein by host cell proteases. Entry studies are available only for a few viruses in the Order, and in each case they were shown to enter cells via receptor-mediated endocytosis. The acidic endosomal pH triggers the fusion of the viral envelope with the membrane of an endosome. Structural studies on two members of this Order, the phleboviruses and the hantaviruses, have shown that the membrane fusion protein Gc displays a class II fusion protein fold and is homologous to its counterparts in flaviviruses and alphaviruses, which are positive-sense, single-stranded RNA viruses. We analyze here recent data on the structure and function of the structure of the phlebovirus Gc and hantavirus Gn and Gc glycoproteins, and extrapolate common features identified in the amino acid sequences to understand also the structure and function of their counterparts in other families of the Bunyavirales Order. Our analysis also identified clear structural homology between the hantavirus Gn and alphavirus E2 glycoproteins, which make a heterodimer with the corresponding fusion proteins Gc and E1, respectively, revealing that not only the fusion protein has been conserved across viral families.
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Affiliation(s)
- Pablo Guardado-Calvo
- Institut Pasteur, Unité de Virologie Structurale, Paris Cedex 15, France; CNRS UMR 3569 Virologie, Paris Cedex 15, France
| | - Félix A Rey
- Institut Pasteur, Unité de Virologie Structurale, Paris Cedex 15, France; CNRS UMR 3569 Virologie, Paris Cedex 15, France.
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Urbanowicz RA, McClure CP, Sakuntabhai A, Sall AA, Kobinger G, Müller MA, Holmes EC, Rey FA, Simon-Loriere E, Ball JK. Human Adaptation of Ebola Virus during the West African Outbreak. Cell 2017; 167:1079-1087.e5. [PMID: 27814505 PMCID: PMC5101188 DOI: 10.1016/j.cell.2016.10.013] [Citation(s) in RCA: 145] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/23/2016] [Accepted: 10/06/2016] [Indexed: 12/02/2022]
Abstract
The 2013–2016 outbreak of Ebola virus (EBOV) in West Africa was the largest recorded. It began following the cross-species transmission of EBOV from an animal reservoir, most likely bats, into humans, with phylogenetic analysis revealing the co-circulation of several viral lineages. We hypothesized that this prolonged human circulation led to genomic changes that increased viral transmissibility in humans. We generated a synthetic glycoprotein (GP) construct based on the earliest reported isolate and introduced amino acid substitutions that defined viral lineages. Mutant GPs were used to generate a panel of pseudoviruses, which were used to infect different human and bat cell lines. These data revealed that specific amino acid substitutions in the EBOV GP have increased tropism for human cells, while reducing tropism for bat cells. Such increased infectivity may have enhanced the ability of EBOV to transmit among humans and contributed to the wide geographic distribution of some viral lineages. EBOV adapted to humans during the West African outbreak Amino acid substitutions in the EBOV glycoprotein increase human cell tropism The same glycoprotein amino acid substitutions decrease tropism for bat cells
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Affiliation(s)
- Richard A Urbanowicz
- School of Life Sciences, The University of Nottingham, Nottingham NG7 2RD, UK; NIHR Nottingham Digestive Diseases Biomedical Research Unit, The University of Nottingham, Nottingham University Hospitals NHS Trust, Nottingham NG7 2UH, UK
| | - C Patrick McClure
- School of Life Sciences, The University of Nottingham, Nottingham NG7 2RD, UK; NIHR Nottingham Digestive Diseases Biomedical Research Unit, The University of Nottingham, Nottingham University Hospitals NHS Trust, Nottingham NG7 2UH, UK
| | - Anavaj Sakuntabhai
- Functional Genetics of Infectious Diseases Unit, Institut Pasteur, 75724 Paris Cedex 15, France; Centre National de la Recherche Scientifique, Unité de Recherche Associée 3012, 75015 Paris, France
| | - Amadou A Sall
- Arbovirus and Viral Hemorrhagic Fever Unit, Institut Pasteur de Dakar, BP 220 Dakar, Senegal
| | - Gary Kobinger
- Special Pathogens Program, National Microbiology Laboratory, Public Health Agency of Canada, Ottawa, ON K1A 0K9, Canada; Special Pathogens Program, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB R3E 3R2, Canada; Department of Medical Microbiology, Faculty of Medicine, University of Manitoba, Winnipeg, MB R32T 2N2, Canada
| | - Marcel A Müller
- Institute of Virology, University of Bonn Medical Center, 53127 Bonn, Germany
| | - Edward C Holmes
- Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, School of Life and Environmental Sciences and Sydney Medical School, The University of Sydney, Sydney, NSW 2050, Australia
| | - Félix A Rey
- Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France; Centre National de la Recherche Scientifique, Unité Mixte de Recherche 3569, 75724 Paris Cedex 15, France
| | - Etienne Simon-Loriere
- Functional Genetics of Infectious Diseases Unit, Institut Pasteur, 75724 Paris Cedex 15, France; Centre National de la Recherche Scientifique, Unité de Recherche Associée 3012, 75015 Paris, France.
| | - Jonathan K Ball
- School of Life Sciences, The University of Nottingham, Nottingham NG7 2RD, UK; NIHR Nottingham Digestive Diseases Biomedical Research Unit, The University of Nottingham, Nottingham University Hospitals NHS Trust, Nottingham NG7 2UH, UK.
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Dubrau D, Tortorici MA, Rey FA, Tautz N. A positive-strand RNA virus uses alternative protein-protein interactions within a viral protease/cofactor complex to switch between RNA replication and virion morphogenesis. PLoS Pathog 2017; 13:e1006134. [PMID: 28151973 PMCID: PMC5308820 DOI: 10.1371/journal.ppat.1006134] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 07/26/2016] [Revised: 02/14/2017] [Accepted: 12/16/2016] [Indexed: 01/20/2023] Open
Abstract
The viruses of the family Flaviviridae possess a positive-strand RNA genome and express a single polyprotein which is processed into functional proteins. Initially, the nonstructural (NS) proteins, which are not part of the virions, form complexes capable of genome replication. Later on, the NS proteins also play a critical role in virion formation. The molecular basis to understand how the same proteins form different complexes required in both processes is so far unknown. For pestiviruses, uncleaved NS2-3 is essential for virion morphogenesis while NS3 is required for RNA replication but is not functional in viral assembly. Recently, we identified two gain of function mutations, located in the C-terminal region of NS2 and in the serine protease domain of NS3 (NS3 residue 132), which allow NS2 and NS3 to substitute for uncleaved NS2-3 in particle assembly. We report here the crystal structure of pestivirus NS3-4A showing that the NS3 residue 132 maps to a surface patch interacting with the C-terminal region of NS4A (NS4A-kink region) suggesting a critical role of this contact in virion morphogenesis. We show that destabilization of this interaction, either by alanine exchanges at this NS3/4A-kink interface, led to a gain of function of the NS3/4A complex in particle formation. In contrast, RNA replication and thus replicase assembly requires a stable association between NS3 and the NS4A-kink region. Thus, we propose that two variants of NS3/4A complexes exist in pestivirus infected cells each representing a basic building block required for either RNA replication or virion morphogenesis. This could be further corroborated by trans-complementation studies with a replication-defective NS3/4A double mutant that was still functional in viral assembly. Our observations illustrate the presence of alternative overlapping surfaces providing different contacts between the same proteins, allowing the switch from RNA replication to virion formation. Many positive-strand RNA viruses replicate without transcribing subgenomic RNAs otherwise often used to temporally coordinate the expression of proteins involved either in genome replication (early) or virion formation (late). Instead, the RNA genomes of the Flaviviridae are translated into a single polyprotein. Their nonstructural proteins (NS), while not present in the virions, are known to be crucially involved in RNA replication and virion formation. The important question how the same proteins form specific complexes required for fundamentally different aspects of the viral replication cycle is not solved yet. For pestiviruses the mature NS3/4A complex is an essential component of the viral RNA-replicase but is incapable of participating in virion morphogenesis which in turn depends on uncleaved NS2-3 in complex with NS4A. However, a gain of function mutation in NS3 enabled the NS3/4A complex to function in virion assembly. Using structure guided mutagenesis in combination with functional studies we identified the interface between NS3 and the C-terminal NS4A region as a module critical for the decision whether a NS3/4A complex serves in RNA replication or as a packaging component. Thus, we propose that subtle changes in local protein interactions represent decisive switches in viral complex formation pathways.
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Affiliation(s)
- Danilo Dubrau
- Institute of Virology and Cell Biology, University of Luebeck, Luebeck, Germany
| | - M. Alejandra Tortorici
- Institut Pasteur, Unité de Virologie Structurale, Paris, France
- CNRS UMR 3569 Virologie, Paris, France
| | - Félix A. Rey
- Institut Pasteur, Unité de Virologie Structurale, Paris, France
- CNRS UMR 3569 Virologie, Paris, France
| | - Norbert Tautz
- Institute of Virology and Cell Biology, University of Luebeck, Luebeck, Germany
- * E-mail:
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Dellarole M, Meola A, Pehau-Arnaudet G, Bontems F, Borgnia MJ, Krey T, Volkmann N, Hanein D, Rey FA. Structural Snapshots of Eff-1 Mediated Membrane Fusion. Biophys J 2017. [DOI: 10.1016/j.bpj.2016.11.2720] [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: 10/20/2022] Open
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Pronost S, Hue E, Fortier C, Foursin M, Fortier G, Desbrosse F, Rey FA, Pitel PH, Richard E, Saunier B. Prevalence of Equine Hepacivirus Infections in France and Evidence for Two Viral Subtypes Circulating Worldwide. Transbound Emerg Dis 2016; 64:1884-1897. [PMID: 27882682 DOI: 10.1111/tbed.12587] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 05/25/2016] [Indexed: 12/20/2022]
Abstract
Like hepatitis C virus (HCV) in humans, the newly identified equine hepacivirus (NPHV) displays a predominating liver tropism that may evolve into chronic infections. The genomes of the two viruses share several organizational and functional features and are phylogenetically closest amongst the Hepacivirus genus. A limited amount of data is available regarding the spread of hepacivirus infections in horses. In this study, we asked whether in a more representative sample the prevalence and distribution of NPHV infections in France would resemble that reported so far in other countries. A total of 1033 horses sera from stud farms throughout France were analysed by qRT-PCR to determine the prevalence of ongoing NPHV infections and viral loads; in positive samples, partial sequences of NPHV's genome (5'UTR, NS3 and NS5B genes) were determined. Serum concentrations of biliary acids, glutamate dehydrogenase (GLDH) and L-gamma-glutamyl transferase (γ-GT) were measured for most horses. We detected NPHV infections in 6.2% of the horses, a prevalence that reached 8.3% in thoroughbreds and was significantly higher than in other breeds. The presence of circulating virus was neither significantly associated with biological disturbances nor with clinical hepatic impairment. Our phylogenetic analysis was based on both neighbour-joining and maximum-likelihood approaches. Its result shows that, like almost everywhere else in the world so far, two major groups of NPHV strains infect French domestic horses. Based on genetic distances, we propose a classification into two separate NPHV subtypes. Viral loads in the serum of horses infected by the main subtype were, in average, four times higher than in those infected by the second subtype. We hypothesize that amino acid substitutions in the palm domain of NS5B between NPHV subtypes could underlie viral phenotypes that explain this result.
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Affiliation(s)
- S Pronost
- Unité de Recherche Risques Microbiens (U2RM), EA 4655, Université de Caen Basse-Normandie, Caen, France.,LABÉO Frank Duncombe, Caen, France.,Hippolia Fondation, Caen, France
| | - E Hue
- Unité de Recherche Risques Microbiens (U2RM), EA 4655, Université de Caen Basse-Normandie, Caen, France.,LABÉO Frank Duncombe, Caen, France.,Hippolia Fondation, Caen, France
| | - C Fortier
- LABÉO Frank Duncombe, Caen, France.,Hippolia Fondation, Caen, France
| | - M Foursin
- Clinique Equine de la Boisrie, Chailloué, France
| | - G Fortier
- Unité de Recherche Risques Microbiens (U2RM), EA 4655, Université de Caen Basse-Normandie, Caen, France.,LABÉO Frank Duncombe, Caen, France.,Hippolia Fondation, Caen, France
| | - F Desbrosse
- Clinique Equine Desbrosse, Saint Lambert, France
| | - F A Rey
- Structural Virology Unit - CNRS UMR 3569, Institut Pasteur, Paris, France
| | - P-H Pitel
- LABÉO Frank Duncombe, Caen, France.,Hippolia Fondation, Caen, France
| | - E Richard
- LABÉO Frank Duncombe, Caen, France.,Hippolia Fondation, Caen, France
| | - B Saunier
- Structural Virology Unit - CNRS UMR 3569, Institut Pasteur, Paris, France
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Barba-Spaeth G, Dejnirattisai W, Rouvinski A, Vaney MC, Medits I, Sharma A, Simon-Lorière E, Sakuntabhai A, Cao-Lormeau VM, Haouz A, England P, Stiasny K, Mongkolsapaya J, Heinz FX, Screaton GR, Rey FA. Erratum: Structural basis of potent Zika-dengue virus antibody cross-neutralization. Nature 2016; 539:314. [PMID: 27626374 DOI: 10.1038/nature19780] [Citation(s) in RCA: 13] [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: 11/09/2022]
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Walls AC, Tortorici MA, Bosch BJ, Frenz B, Rottier PJM, DiMaio F, Rey FA, Veesler D. Cryo-electron microscopy structure of a coronavirus spike glycoprotein trimer. Nature 2016; 531:114-117. [PMID: 26855426 PMCID: PMC5018210 DOI: 10.1038/nature16988] [Citation(s) in RCA: 382] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 01/13/2016] [Indexed: 12/21/2022]
Abstract
The tremendous pandemic potential of coronaviruses was demonstrated twice in the past few decades by two global outbreaks of deadly pneumonia. Entry of coronaviruses into cells is mediated by the transmembrane spike glycoprotein S, which forms a trimer carrying receptor-binding and membrane fusion functions. S also contains the principal antigenic determinants and is the target of neutralizing antibodies. Here we present the structure of a mouse coronavirus S trimer ectodomain determined at 4.0 Å resolution by single particle cryo-electron microscopy. It reveals the metastable pre-fusion architecture of S and highlights key interactions stabilizing it. The structure shares a common core with paramyxovirus F proteins, implicating mechanistic similarities and an evolutionary connection between these viral fusion proteins. The accessibility of the highly conserved fusion peptide at the periphery of the trimer indicates potential vaccinology strategies to elicit broadly neutralizing antibodies against coronaviruses. Finally, comparison with crystal structures of human coronavirus S domains allows rationalization of the molecular basis for species specificity based on the use of spatially contiguous but distinct domains.
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Affiliation(s)
- Alexandra C Walls
- Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA
| | - M Alejandra Tortorici
- Institut Pasteur, Unité de Virologie Structurale, Paris, France.,CNRS UMR 3569 Virologie, Paris, France
| | - Berend-Jan Bosch
- Virology Division, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Brandon Frenz
- Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA
| | - Peter J M Rottier
- Virology Division, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Frank DiMaio
- Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA
| | - Félix A Rey
- Institut Pasteur, Unité de Virologie Structurale, Paris, France.,CNRS UMR 3569 Virologie, Paris, France
| | - David Veesler
- Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA
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Ouizougun-Oubari M, Pereira N, Tarus B, Galloux M, Lassoued S, Fix J, Tortorici MA, Hoos S, Baron B, England P, Desmaële D, Couvreur P, Bontems F, Rey FA, Eléouët JF, Sizun C, Slama-Schwok A, Duquerroy S. A Druggable Pocket at the Nucleocapsid/Phosphoprotein Interaction Site of Human Respiratory Syncytial Virus. J Virol 2015; 89:11129-43. [PMID: 26246564 PMCID: PMC4621127 DOI: 10.1128/jvi.01612-15] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [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: 06/23/2015] [Accepted: 07/28/2015] [Indexed: 02/03/2023] Open
Abstract
UNLABELLED Presently, respiratory syncytial virus (RSV), the main cause of severe respiratory infections in infants, cannot be treated efficiently with antivirals. However, its RNA-dependent polymerase complex offers potential targets for RSV-specific drugs. This includes the recognition of its template, the ribonucleoprotein complex (RNP), consisting of genomic RNA encapsidated by the RSV nucleoprotein, N. This recognition proceeds via interaction between the phosphoprotein P, which is the main polymerase cofactor, and N. The determinant role of the C terminus of P, and more particularly of the last residue, F241, in RNP binding and viral RNA synthesis has been assessed previously. Here, we provide detailed structural insight into this crucial interaction for RSV polymerase activity. We solved the crystallographic structures of complexes between the N-terminal domain of N (N-NTD) and C-terminal peptides of P and characterized binding by biophysical approaches. Our results provide a rationale for the pivotal role of F241, which inserts into a well-defined N-NTD pocket. This primary binding site is completed by transient contacts with upstream P residues outside the pocket. Based on the structural information of the N-NTD:P complex, we identified inhibitors of this interaction, selected by in silico screening of small compounds, that efficiently bind to N and compete with P in vitro. One of the compounds displayed inhibitory activity on RSV replication, thereby strengthening the relevance of N-NTD for structure-based design of RSV-specific antivirals. IMPORTANCE Respiratory syncytial virus (RSV) is a widespread pathogen that is a leading cause of acute lower respiratory infections in infants worldwide. RSV cannot be treated efficiently with antivirals, and no vaccine is presently available, with the development of pediatric vaccines being particularly challenging. Therefore, there is a need for new therapeutic strategies that specifically target RSV. The interaction between the RSV phosphoprotein P and the ribonucleoprotein complex is critical for viral replication. In this study, we identified the main structural determinants of this interaction, and we used them to screen potential inhibitors in silico. We found a family of molecules that were efficient competitors of P in vitro and showed inhibitory activity on RSV replication in cellular assays. These compounds provide a basis for a pharmacophore model that must be improved but that holds promises for the design of new RSV-specific antivirals.
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Affiliation(s)
- Mohamed Ouizougun-Oubari
- Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, Paris, France CNRS UMR 3569 Virologie, Paris, France
| | - Nelson Pereira
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette, France
| | - Bogdan Tarus
- Unité de Virologie et Immunologie Moléculaires (UR892), INRA, Jouy-en-Josas, France
| | - Marie Galloux
- Unité de Virologie et Immunologie Moléculaires (UR892), INRA, Jouy-en-Josas, France
| | - Safa Lassoued
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette, France
| | - Jenna Fix
- Unité de Virologie et Immunologie Moléculaires (UR892), INRA, Jouy-en-Josas, France
| | - M Alejandra Tortorici
- Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, Paris, France CNRS UMR 3569 Virologie, Paris, France
| | - Sylviane Hoos
- Institut Pasteur, Protéopôle, CNRS UMR 3528, Paris, France
| | - Bruno Baron
- Institut Pasteur, Protéopôle, CNRS UMR 3528, Paris, France
| | | | - Didier Desmaële
- UMR CNRS 8612, Institut Galien Paris-Sud, Châtenay-Malabry, France
| | - Patrick Couvreur
- UMR CNRS 8612, Institut Galien Paris-Sud, Châtenay-Malabry, France
| | - François Bontems
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette, France
| | - Félix A Rey
- Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, Paris, France CNRS UMR 3569 Virologie, Paris, France
| | | | - Christina Sizun
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette, France
| | - Anny Slama-Schwok
- Unité de Virologie et Immunologie Moléculaires (UR892), INRA, Jouy-en-Josas, France
| | - Stéphane Duquerroy
- Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, Paris, France CNRS UMR 3569 Virologie, Paris, France Université Paris-Sud, Faculté des Sciences, Orsay, France
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Rouvinski A, Guardado-Calvo P, Barba-Spaeth G, Duquerroy S, Vaney MC, Kikuti CM, Navarro Sanchez ME, Dejnirattisai W, Wongwiwat W, Haouz A, Girard-Blanc C, Petres S, Shepard WE, Desprès P, Arenzana-Seisdedos F, Dussart P, Mongkolsapaya J, Screaton GR, Rey FA. Recognition determinants of broadly neutralizing human antibodies against dengue viruses. Nature 2015; 520:109-13. [PMID: 25581790 DOI: 10.1038/nature14130] [Citation(s) in RCA: 261] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 12/01/2014] [Indexed: 12/12/2022]
Abstract
Dengue disease is caused by four different flavivirus serotypes, which infect 390 million people yearly with 25% symptomatic cases and for which no licensed vaccine is available. Recent phase III vaccine trials showed partial protection, and in particular no protection for dengue virus serotype 2 (refs 3, 4). Structural studies so far have characterized only epitopes recognized by serotype-specific human antibodies. We recently isolated human antibodies potently neutralizing all four dengue virus serotypes. Here we describe the X-ray structures of four of these broadly neutralizing antibodies in complex with the envelope glycoprotein E from dengue virus serotype 2, revealing that the recognition determinants are at a serotype-invariant site at the E-dimer interface, including the exposed main chain of the E fusion loop and the two conserved glycan chains. This 'E-dimer-dependent epitope' is also the binding site for the viral glycoprotein prM during virus maturation in the secretory pathway of the infected cell, explaining its conservation across serotypes and highlighting an Achilles' heel of the virus with respect to antibody neutralization. These findings will be instrumental for devising novel immunogens to protect simultaneously against all four serotypes of dengue virus.
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Affiliation(s)
- Alexander Rouvinski
- 1] Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France [2] CNRS UMR 3569 Virologie, 75724 Paris Cedex 15, France
| | - Pablo Guardado-Calvo
- 1] Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France [2] CNRS UMR 3569 Virologie, 75724 Paris Cedex 15, France
| | - Giovanna Barba-Spaeth
- 1] Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France [2] CNRS UMR 3569 Virologie, 75724 Paris Cedex 15, France
| | - Stéphane Duquerroy
- 1] Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France [2] CNRS UMR 3569 Virologie, 75724 Paris Cedex 15, France [3] Université Paris-Sud, Faculté des Sciences, 91405 Orsay, France
| | - Marie-Christine Vaney
- 1] Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France [2] CNRS UMR 3569 Virologie, 75724 Paris Cedex 15, France
| | - Carlos M Kikuti
- 1] Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France [2] CNRS UMR 3569 Virologie, 75724 Paris Cedex 15, France
| | - M Erika Navarro Sanchez
- 1] Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France [2] CNRS UMR 3569 Virologie, 75724 Paris Cedex 15, France
| | - Wanwisa Dejnirattisai
- Division of Immunology and Inflammation, Department of Medicine, Hammersmith Hospital Campus, Imperial College London, London W12 0NN, UK
| | - Wiyada Wongwiwat
- Division of Immunology and Inflammation, Department of Medicine, Hammersmith Hospital Campus, Imperial College London, London W12 0NN, UK
| | - Ahmed Haouz
- Institut Pasteur, Protéopôle, CNRS UMR 3528, 75724 Paris Cedex 15, France
| | | | - Stéphane Petres
- Institut Pasteur, Protéopôle, CNRS UMR 3528, 75724 Paris Cedex 15, France
| | - William E Shepard
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin, BP48, 91192 Gif-sur-Yvette, France
| | - Philippe Desprès
- Institut Pasteur, Département de Virologie, Unité des Interactions Moléculaires Flavivirus-Hôtes, 75724 Paris Cedex 15, France
| | - Fernando Arenzana-Seisdedos
- Institut Pasteur, Département de Virologie, Unité de Pathogénie Virale, INSERM U1108, 75724 Paris Cedex 15, France
| | - Philippe Dussart
- Institut Pasteur de Guyane, BP 6010, 97306 Cayenne, French Guiana
| | - Juthathip Mongkolsapaya
- 1] Division of Immunology and Inflammation, Department of Medicine, Hammersmith Hospital Campus, Imperial College London, London W12 0NN, UK [2] Dengue Hemorrhagic Fever Research Unit, Office for Research and Development, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Gavin R Screaton
- Division of Immunology and Inflammation, Department of Medicine, Hammersmith Hospital Campus, Imperial College London, London W12 0NN, UK
| | - Félix A Rey
- 1] Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 75724 Paris Cedex 15, France [2] CNRS UMR 3569 Virologie, 75724 Paris Cedex 15, France [3] Institut Pasteur, Protéopôle, CNRS UMR 3528, 75724 Paris Cedex 15, France
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Bakker SE, Duquerroy S, Galloux M, Loney C, Conner E, Eléouët JF, Rey FA, Bhella D. The respiratory syncytial virus nucleoprotein-RNA complex forms a left-handed helical nucleocapsid. J Gen Virol 2013; 94:1734-1738. [PMID: 23677789 PMCID: PMC3749527 DOI: 10.1099/vir.0.053025-0] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Respiratory syncytial virus (RSV) is an important human pathogen. Its nucleocapsid (NC), which comprises the negative sense RNA viral genome coated by the viral nucleoprotein N, is a critical assembly that serves as template for both mRNA synthesis and genome replication. We have previously described the X-ray structure of an NC-like structure: a decameric ring formed of N-RNA that mimics one turn of the helical NC. In the absence of experimental data we had hypothesized that the NC helix would be right-handed, as the N–N contacts in the ring appeared to more easily adapt to that conformation. We now unambiguously show that the RSV NC is a left-handed helix. We further show that the contacts in the ring can be distorted to maintain key N–N-protein interactions in a left-handed helix, and discuss the implications of the resulting atomic model of the helical NC for viral replication and transcription.
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Affiliation(s)
- Saskia E Bakker
- Medical Research Council - University of Glasgow Centre for Virus Research, Church Street, Glasgow, G11 5JR, UK
| | - Stéphane Duquerroy
- Université Paris Sud, 91405 Orsay, France.,Institut Pasteur, Unité de Virologie Structurale, Département de Virologie and CNRS Unité de Recherche Associée (URA) 3015, 25 Rue du Dr Roux, 75724 Paris Cedex 15, France
| | - Marie Galloux
- INRA, Unité de Virologie et Immunologie Moléculaires, Domaine du Vilvert, 78350 Jouy-en-Josas, France
| | - Colin Loney
- Medical Research Council - University of Glasgow Centre for Virus Research, Church Street, Glasgow, G11 5JR, UK
| | - Edward Conner
- Medical Research Council - University of Glasgow Centre for Virus Research, Church Street, Glasgow, G11 5JR, UK
| | - Jean-François Eléouët
- INRA, Unité de Virologie et Immunologie Moléculaires, Domaine du Vilvert, 78350 Jouy-en-Josas, France
| | - Félix A Rey
- Institut Pasteur, Unité de Virologie Structurale, Département de Virologie and CNRS Unité de Recherche Associée (URA) 3015, 25 Rue du Dr Roux, 75724 Paris Cedex 15, France
| | - David Bhella
- Medical Research Council - University of Glasgow Centre for Virus Research, Church Street, Glasgow, G11 5JR, UK
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Vaney MC, Duquerroy S, Rey FA. Alphavirus structure: activation for entry at the target cell surface. Curr Opin Virol 2013; 3:151-8. [PMID: 23623639 DOI: 10.1016/j.coviro.2013.04.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Revised: 04/05/2013] [Accepted: 04/05/2013] [Indexed: 01/27/2023]
Abstract
A wealth of new data about the 3D organization of alphavirus particles was obtained in the last few years. This includes the crystal structures of the envelope glycoprotein complexes at neutral and at acid pH, as well as electron microscopy reconstructions of intact virions at neutral pH to resolutions between 7Å and 4Å. The combination has provided unprecedented detail in the description of the alphavirus virion. This review surveys the main features discovered and the implications for the biology of the virus, in particular for the process of disassembly of the glycoprotein shell during entry. The major outstanding questions in this area are also identified and discussed.
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46
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Krey T, Bontems F, Vonrhein C, Vaney MC, Bricogne G, Rümenapf T, Rey FA. Crystal structure of the pestivirus envelope glycoprotein E(rns) and mechanistic analysis of its ribonuclease activity. Structure 2012; 20:862-73. [PMID: 22579253 DOI: 10.1016/j.str.2012.03.018] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 02/29/2012] [Accepted: 03/03/2012] [Indexed: 01/24/2023]
Abstract
Pestiviruses, which belong to the Flaviviridae family of RNA viruses, are important agents of veterinary diseases causing substantial economical losses in animal farming worldwide. Pestivirus particles display three envelope glycoproteins at their surface: E(rns), E1, and E2. We report here the crystal structure of the catalytic domain of E(rns), the ribonucleolytic activity of which is believed to counteract the innate immunity of the host. The structure reveals a three-dimensional fold corresponding to T2 ribonucleases from plants and fungi. Cocrystallization experiments with mono- and oligonucleotides revealed the structural basis for substrate recognition at two binding sites previously identified for T2 RNases. A detailed analysis of poly-U cleavage products using (31)P-NMR and size exclusion chromatography, together with molecular docking studies, provides a comprehensive mechanistic picture of E(rns) activity on its substrates and reveals the presence of at least one additional nucleotide binding site.
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Affiliation(s)
- Thomas Krey
- Unité de Virologie Structurale, Institut Pasteur, 75015 Paris, France.
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Gilmartin AA, Lamp B, Rümenapf T, Persson MA, Rey FA, Krey T. High-level secretion of recombinant monomeric murine and human single-chain Fv antibodies from Drosophila S2 cells. Protein Eng Des Sel 2012; 25:59-66. [PMID: 22160929 PMCID: PMC3258843 DOI: 10.1093/protein/gzr058] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Revised: 11/11/2011] [Accepted: 11/14/2011] [Indexed: 02/05/2023] Open
Abstract
Single-chain variable fragment (scFvs) antibodies are small polypeptides (∼26 kD) containing the heavy (V(H)) and light (V(L)) immunoglobulin domains of a parent antibody connected by a flexible linker. In addition to being frequently used in diagnostics and therapy for an increasing number of human diseases, scFvs are important tools for structural biology as crystallization chaperones. Although scFvs can be expressed in many different organisms, the expression level of an scFv strongly depends on its particular amino acid sequence. We report here a system allowing for easy and efficient cloning of (i) scFvs selected by phage display and (ii) individual heavy and light chain sequences from hybridoma cDNA into expression plasmids engineered for secretion of the recombinant fragment produced in Drosophila S2 cells. We validated the method by producing five scFvs derived from human and murine parent antibodies directed against various antigens. The production yields varied between 5 and 12 mg monomeric scFv per liter of supernatant, indicating a relative independence on the individual sequences. The recombinant scFvs bound their cognate antigen with high affinity, comparable with the parent antibodies. The suitability of the produced recombinant fragments for structural studies was demonstrated by crystallization and structure determination of one of the produced scFvs, derived from a broadly neutralizing antibody against the major glycoprotein E2 of the hepatitis C virus. Structural comparison with the Protein Data Bank revealed the typical spatial organization of V(H) and V(L) domains, further validating the here-reported expression system.
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Affiliation(s)
- Allissia A. Gilmartin
- Départment de Virologie, Institut Pasteur, Unité de Virologie Structurale, CNRS URA 3015, Paris, France
| | - Benjamin Lamp
- Faculty of Veterinary Medicine, Institute of Virology, Justus-Liebig-University, Giessen, Germany
| | - Till Rümenapf
- Faculty of Veterinary Medicine, Institute of Virology, Justus-Liebig-University, Giessen, Germany
| | - Mats A.A. Persson
- Department of Clinical Neuroscience, Karolinska Institutet, Center for Molecular Medicine, Karolinska University Hospital, 171 76 Stockholm, Sweden
| | - Félix A. Rey
- Départment de Virologie, Institut Pasteur, Unité de Virologie Structurale, CNRS URA 3015, Paris, France
| | - Thomas Krey
- Départment de Virologie, Institut Pasteur, Unité de Virologie Structurale, CNRS URA 3015, Paris, France
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Agirre J, Aloria K, Arizmendi JM, Iloro I, Elortza F, Marti GA, Neumann E, Rey FA, Guérin DM. VP4 Protein Appears as a Product of RNA Encapsidation in Triatoma Virus (TRV). Biophys J 2011. [DOI: 10.1016/j.bpj.2010.12.2397] [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: 10/18/2022] Open
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