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Aguilar HC. Antibody inhibition of measles virus entry. Science 2024; 384:1406-1407. [PMID: 38935737 DOI: 10.1126/science.adq3348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
An intermediate virus-cell fusion step is revealed by an antibody with therapeutic potential.
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Affiliation(s)
- Hector C Aguilar
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
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2
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Zyla DS, Della Marca R, Niemeyer G, Zipursky G, Stearns K, Leedale C, Sobolik EB, Callaway HM, Hariharan C, Peng W, Parekh D, Marcink TC, Diaz Avalos R, Horvat B, Mathieu C, Snijder J, Greninger AL, Hastie KM, Niewiesk S, Moscona A, Porotto M, Ollmann Saphire E. A neutralizing antibody prevents postfusion transition of measles virus fusion protein. Science 2024; 384:eadm8693. [PMID: 38935733 DOI: 10.1126/science.adm8693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 04/28/2024] [Indexed: 06/29/2024]
Abstract
Measles virus (MeV) presents a public health threat that is escalating as vaccine coverage in the general population declines and as populations of immunocompromised individuals, who cannot be vaccinated, increase. There are no approved therapeutics for MeV. Neutralizing antibodies targeting viral fusion are one potential therapeutic approach but have not yet been structurally characterized or advanced to clinical use. We present cryo-electron microscopy (cryo-EM) structures of prefusion F alone [2.1-angstrom (Å) resolution], F complexed with a fusion-inhibitory peptide (2.3-Å resolution), F complexed with the neutralizing and protective monoclonal antibody (mAb) 77 (2.6-Å resolution), and an additional structure of postfusion F (2.7-Å resolution). In vitro assays and examination of additional EM classes show that mAb 77 binds prefusion F, arrests F in an intermediate state, and prevents transition to the postfusion conformation. These structures shed light on antibody-mediated neutralization that involves arrest of fusion proteins in an intermediate state.
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Affiliation(s)
- Dawid S Zyla
- Center for Vaccine Innovation, La Jolla Institute for Immunology, La Jolla, CA 92037, USA
| | - Roberta Della Marca
- Center for Host-Pathogen Interaction, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli," 81100 Caserta, Italy
| | - Gele Niemeyer
- Center for Vaccine Innovation, La Jolla Institute for Immunology, La Jolla, CA 92037, USA
- Institute of Biochemistry, Center for Structural and Cell Biology in Medicine, University of Luebeck, D-23538 Luebeck, Germany
| | - Gillian Zipursky
- Center for Host-Pathogen Interaction, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
| | - Kyle Stearns
- Center for Host-Pathogen Interaction, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
| | - Cameron Leedale
- Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Elizabeth B Sobolik
- Department of Laboratory Medicine and Pathology Virology Division, University of Washington, Seattle, WA 98109, USA
| | - Heather M Callaway
- Center for Vaccine Innovation, La Jolla Institute for Immunology, La Jolla, CA 92037, USA
| | - Chitra Hariharan
- Center for Vaccine Innovation, La Jolla Institute for Immunology, La Jolla, CA 92037, USA
| | - Weiwei Peng
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CH Utrecht, Netherlands
- Netherlands Proteomics Center, 3584 CH Utrecht, Netherlands
| | - Diptiben Parekh
- Center for Vaccine Innovation, La Jolla Institute for Immunology, La Jolla, CA 92037, USA
| | - Tara C Marcink
- Center for Host-Pathogen Interaction, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
| | - Ruben Diaz Avalos
- Center for Vaccine Innovation, La Jolla Institute for Immunology, La Jolla, CA 92037, USA
| | - Branka Horvat
- Immunobiology of Viral Infections, International Center for Infectiology Research-CIRI, INSERM U1111, CNRS UMR5308, University Lyon 1, ENS de Lyon, 69007 Lyon, France
| | - Cyrille Mathieu
- Centre International de Recherche en Infectiologie équipe Neuro-Invasion, TROpism and VIRal Encephalitis (NITROVIRE), INSERM U1111-Université Claude Bernard Lyon 1, CNRS, UMR5308, Ecole Normale Supérieure de Lyon, Université Lyon, 69007 Lyon, France
| | - Joost Snijder
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CH Utrecht, Netherlands
- Netherlands Proteomics Center, 3584 CH Utrecht, Netherlands
| | - Alexander L Greninger
- Department of Laboratory Medicine and Pathology Virology Division, University of Washington, Seattle, WA 98109, USA
| | - Kathryn M Hastie
- Center for Vaccine Innovation, La Jolla Institute for Immunology, La Jolla, CA 92037, USA
| | - Stefan Niewiesk
- Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Anne Moscona
- Center for Host-Pathogen Interaction, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
- Department of Microbiology and Immunology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
- Department of Physiology and Cellular Biophysics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
| | - Matteo Porotto
- Center for Host-Pathogen Interaction, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli," 81100 Caserta, Italy
| | - Erica Ollmann Saphire
- Center for Vaccine Innovation, La Jolla Institute for Immunology, La Jolla, CA 92037, USA
- Department of Medicine, University of California, San Diego, La Jolla, CA 92037, USA
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3
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Schmitz KS, Handrejk K, Liepina L, Bauer L, Haas GD, van Puijfelik F, Veldhuis Kroeze EJB, Riekstina M, Strautmanis J, Cao H, Verdijk RM, GeurtsvanKessel CH, van Boheemen S, van Riel D, Lee B, Porotto M, de Swart RL, de Vries RD. Functional properties of measles virus proteins derived from a subacute sclerosing panencephalitis patient who received repeated remdesivir treatments. J Virol 2024; 98:e0187423. [PMID: 38329336 PMCID: PMC10949486 DOI: 10.1128/jvi.01874-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 01/16/2024] [Indexed: 02/09/2024] Open
Abstract
Subacute sclerosing panencephalitis (SSPE) is a rare but fatal late neurological complication of measles, caused by persistent measles virus (MeV) infection of the central nervous system. There are no drugs approved for the treatment of SSPE. Here, we followed the clinical progression of a 5-year-old SSPE patient after treatment with the nucleoside analog remdesivir, conducted a post-mortem evaluation of the patient's brain, and characterized the MeV detected in the brain. The quality of life of the patient transiently improved after the first two courses of remdesivir, but a third course had no further clinical effect, and the patient eventually succumbed to his condition. Post-mortem evaluation of the brain displayed histopathological changes including loss of neurons and demyelination paired with abundant presence of MeV RNA-positive cells throughout the brain. Next-generation sequencing of RNA isolated from the brain revealed a complete MeV genome with mutations that are typically detected in SSPE, characterized by a hypermutated M gene. Additional mutations were detected in the polymerase (L) gene, which were not associated with resistance to remdesivir. Functional characterization showed that mutations in the F gene led to a hyperfusogenic phenotype predominantly mediated by N465I. Additionally, recombinant wild-type-based MeV with the SSPE-F gene or the F gene with the N465I mutation was no longer lymphotropic but instead efficiently disseminated in neural cultures. Altogether, this case encourages further investigation of remdesivir as a potential treatment of SSPE and highlights the necessity to functionally understand SSPE-causing MeV.IMPORTANCEMeasles virus (MeV) causes acute, systemic disease and remains an important cause of morbidity and mortality in humans. Despite the lack of known entry receptors in the brain, MeV can persistently infect the brain causing the rare but fatal neurological disorder subacute sclerosing panencephalitis (SSPE). SSPE-causing MeVs are characterized by a hypermutated genome and a hyperfusogenic F protein that facilitates the rapid spread of MeV throughout the brain. No treatment against SSPE is available, but the nucleoside analog remdesivir was recently demonstrated to be effective against MeV in vitro. We show that treatment of an SSPE patient with remdesivir led to transient clinical improvement and did not induce viral escape mutants, encouraging the future use of remdesivir in SSPE patients. Functional characterization of the viral proteins sheds light on the shared properties of SSPE-causing MeVs and further contributes to understanding how those viruses cause disease.
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Affiliation(s)
| | - Kim Handrejk
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | - Lelde Liepina
- Clinic for Pediatric Neurology and Neurosurgery, Children’s Clinical University Hospital, Riga, Latvia
| | - Lisa Bauer
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | - Griffin D. Haas
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | | | | | - Marta Riekstina
- Department of Pathology, Children’s Clinical University Hospital, Riga, Latvia
| | - Jurgis Strautmanis
- Clinic for Pediatric Neurology and Neurosurgery, Children’s Clinical University Hospital, Riga, Latvia
| | - Huyen Cao
- Departments of Clinical Research, Biometrics, and Virology, Gilead Sciences, Inc., Foster City, California, USA
| | - Robert M. Verdijk
- Department of Pathology, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | | | | | - Debby van Riel
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | - Benhur Lee
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Matteo Porotto
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
- Center for Host–Pathogen Interaction, Columbia University Irving Medical Center, New York, New York, USA
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, Caserta, Italy
| | - Rik L. de Swart
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | - Rory D. de Vries
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
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4
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Yousaf I, Hannon WW, Donohue RC, Pfaller CK, Yadav K, Dikdan RJ, Tyagi S, Schroeder DC, Shieh WJ, Rota PA, Feder AF, Cattaneo R. Brain tropism acquisition: The spatial dynamics and evolution of a measles virus collective infectious unit that drove lethal subacute sclerosing panencephalitis. PLoS Pathog 2023; 19:e1011817. [PMID: 38127684 PMCID: PMC10735034 DOI: 10.1371/journal.ppat.1011817] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 11/10/2023] [Indexed: 12/23/2023] Open
Abstract
It is increasingly appreciated that pathogens can spread as infectious units constituted by multiple, genetically diverse genomes, also called collective infectious units or genome collectives. However, genetic characterization of the spatial dynamics of collective infectious units in animal hosts is demanding, and it is rarely feasible in humans. Measles virus (MeV), whose spread in lymphatic tissues and airway epithelia relies on collective infectious units, can, in rare cases, cause subacute sclerosing panencephalitis (SSPE), a lethal human brain disease. In different SSPE cases, MeV acquisition of brain tropism has been attributed to mutations affecting either the fusion or the matrix protein, or both, but the overarching mechanism driving brain adaptation is not understood. Here we analyzed MeV RNA from several spatially distinct brain regions of an individual who succumbed to SSPE. Surprisingly, we identified two major MeV genome subpopulations present at variable frequencies in all 15 brain specimens examined. Both genome types accumulated mutations like those shown to favor receptor-independent cell-cell spread in other SSPE cases. Most infected cells carried both genome types, suggesting the possibility of genetic complementation. We cannot definitively chart the history of the spread of this virus in the brain, but several observations suggest that mutant genomes generated in the frontal cortex moved outwards as a collective and diversified. During diversification, mutations affecting the cytoplasmic tails of both viral envelope proteins emerged and fluctuated in frequency across genetic backgrounds, suggesting convergent and potentially frequency-dependent evolution for modulation of fusogenicity. We propose that a collective infectious unit drove MeV pathogenesis in this brain. Re-examination of published data suggests that similar processes may have occurred in other SSPE cases. Our studies provide a primer for analyses of the evolution of collective infectious units of other pathogens that cause lethal disease in humans.
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Affiliation(s)
- Iris Yousaf
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Mayo Clinic Graduate School of Biomedical Sciences, Rochester, Minnesota, United States of America
| | - William W. Hannon
- Basic Sciences and Computational Biology, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
- Molecular and Cellular Biology Graduate Program, University of Washington, Seattle, Washington, United States of America
| | - Ryan C. Donohue
- Mayo Clinic Graduate School of Biomedical Sciences, Rochester, Minnesota, United States of America
| | - Christian K. Pfaller
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Mayo Clinic Graduate School of Biomedical Sciences, Rochester, Minnesota, United States of America
| | - Kalpana Yadav
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Ryan J. Dikdan
- Public Health Research Institute, Rutgers University, Newark, New Jersey, United States of America
| | - Sanjay Tyagi
- Public Health Research Institute, Rutgers University, Newark, New Jersey, United States of America
| | - Declan C. Schroeder
- Department of Veterinary Population Medicine, University of Minnesota, St Paul, Minnesota, United States of America
| | - Wun-Ju Shieh
- Infectious Diseases Pathology Branch, Division of High Consequence Pathogens and Pathology, Center for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Paul A. Rota
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Center for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Alison F. Feder
- Genome Sciences, University of Washington, Seattle, Washington, United States of America
- Public Health Sciences and Computational Biology, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
| | - Roberto Cattaneo
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Mayo Clinic Graduate School of Biomedical Sciences, Rochester, Minnesota, United States of America
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5
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Stelitano D, La Frazia S, Ambrosino A, Zannella C, Tay D, Iovane V, Montagnaro S, De Filippis A, Santoro MG, Porotto M, Galdiero M. Antiviral activity of nitazoxanide against Morbillivirus infections. J Virus Erad 2023; 9:100353. [PMID: 38028567 PMCID: PMC10679774 DOI: 10.1016/j.jve.2023.100353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 09/04/2023] [Accepted: 11/01/2023] [Indexed: 12/01/2023] Open
Abstract
The measles virus (MeV) and canine distemper virus (CDV) belong to the genus Morbillivirus of the Paramyxoviridae family. They are enveloped viruses harboring a non-segmented negative-sense RNA. Morbilliviruses are extremely contagious and transmitted through infectious aerosol droplets. Both MeV and CDV may cause respiratory infections and fatal encephalitis, although a high incidence of brain infections is unique to CDV. Despite the availability of a safe and effective vaccine against these viruses, in recent years we are witnessing a strong resurgence of Morbillivirus infection. Measles still kills more than 100,000 people each year, and CDV causes widespread outbreaks, especially among wild animals, including non-human primates. No drugs are currently approved for MeV and CDV. Therefore, the identification of effective antiviral agents represents an unmet medical need. Here, we have investigated the potential antiviral properties of nitazoxanide (NTZ) against MeV and CDV. Antiviral activity was explored with live virus and cell-based assays. NTZ is a thiazolide that is approved by the FDA as an antiprotozoal agent for the treatment of Giardia intestinalis and Cryptosporidium parvum. Further, nitazoxanide and its metabolite tizoxanide have recently emerged as broad-spectrum antiviral agents. We found that NTZ blocks the MeV and CDV replication, acting at the post-entry level. Moreover, we showed that NTZ affects the function of the viral fusion protein (F), impairing viral spread. Our results indicate that NTZ should be further explored as a therapeutic option in measles and canine distemper virus treatment.
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Affiliation(s)
- Debora Stelitano
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, via Santa Maria di Costantinopoli 16, 80138, Naples, Italy
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, 701 West 168th st, 10032, New York, NY, USA
- Center for Host–Pathogen Interaction, Columbia University Vagelos College of Physicians and Surgeons, 701 West 168th st, 10032, New York, NY, USA
| | - Simone La Frazia
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133, Rome, Italy
| | - Annalisa Ambrosino
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, via Santa Maria di Costantinopoli 16, 80138, Naples, Italy
| | - Carla Zannella
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, via Santa Maria di Costantinopoli 16, 80138, Naples, Italy
| | - Daniel Tay
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, 701 West 168th st, 10032, New York, NY, USA
- Center for Host–Pathogen Interaction, Columbia University Vagelos College of Physicians and Surgeons, 701 West 168th st, 10032, New York, NY, USA
| | - Valentina Iovane
- Department of Agriculture Sciences, University of Naples “Federico II”, Via Università, 100-Portici, 80055, Naples, Italy
| | - Serena Montagnaro
- Department of Veterinary Medicine and Animal Production, University of Naples “Federico II”, via Federico Delpino 1, 80137, Naples, Italy
| | - Anna De Filippis
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, via Santa Maria di Costantinopoli 16, 80138, Naples, Italy
| | - Maria Gabriella Santoro
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133, Rome, Italy
- Institute of Translational Pharmacology, CNR, Via Fosso del Cavaliere 100, 00133, Rome, Italy
| | - Matteo Porotto
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, via Santa Maria di Costantinopoli 16, 80138, Naples, Italy
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, 701 West 168th st, 10032, New York, NY, USA
- Center for Host–Pathogen Interaction, Columbia University Vagelos College of Physicians and Surgeons, 701 West 168th st, 10032, New York, NY, USA
| | - Massimiliano Galdiero
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, via Santa Maria di Costantinopoli 16, 80138, Naples, Italy
- Virology and Microbiology Unit, University Hospital “Luigi Vanvitelli”, via Santa Maria di Costantinopoli 16, 80138, Naples, Italy
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6
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Takemoto R, Hirai Y, Watanabe S, Harada H, Suzuki T, Hashiguchi T, Yanagi Y, Shirogane Y. Interaction of the Hemagglutinin Stalk Region with Cell Adhesion Molecule (CADM) 1 and CADM2 Mediates the Spread between Neurons and Neuropathogenicity of Measles Virus with a Hyperfusogenic Fusion Protein. J Virol 2023; 97:e0034023. [PMID: 37166307 PMCID: PMC10231178 DOI: 10.1128/jvi.00340-23] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 04/19/2023] [Indexed: 05/12/2023] Open
Abstract
Measles virus (MeV), the causative agent of measles, is an enveloped RNA virus of the family Paramyxoviridae, which remains an important cause of childhood morbidity and mortality. MeV has two envelope glycoproteins, the hemagglutinin (H) and fusion (F) proteins. During viral entry or virus-mediated fusion between infected cells and neighboring susceptible cells, the head domain of the H protein initially binds to its receptors, signaling lymphocytic activation molecule family member 1 (SLAM) and nectin-4, and then the stalk region of the H protein transmits the fusion-triggering signal to the F protein. MeV may persist in the human brain and cause a fatal neurodegenerative disease, subacute sclerosing panencephalitis (SSPE). Recently, we showed, using in vitro cell culture, that cell adhesion molecule (CADM) 1 and CADM2 are host factors that trigger hyperfusogenic mutant F proteins, causing cell-to-cell fusion and the transfer of the MeV genome between neurons. Unlike conventional receptors, CADM1 and CADM2 interact in cis (on the same membrane) with the H protein and then trigger membrane fusion. Here, we show that alanine substitutions in part of the stalk region (positions 171-175) abolish the ability of the H protein to mediate membrane fusion triggered by CADM1 and CADM2, but not by SLAM. The recombinant hyperfusogenic MeV carrying this mutant H protein loses its ability to spread in primary mouse neurons as well as its neurovirulence in experimentally infected suckling hamsters. These results indicate that CADM1 and CADM2 are key molecules for MeV propagation in the brain and its neurovirulence in vivo. IMPORTANCE Measles is an acute febrile illness with skin rash. Despite the availability of highly effective vaccines, measles is still an important cause of childhood morbidity and mortality in many countries. The World Health Organization estimates that more than 120,000 people died from measles worldwide in 2021. Measles virus (MeV), the causative agent of measles, can also cause a fatal progressive neurological disorder, subacute sclerosing panencephalitis (SSPE), several years after acute infection. There is currently no effective treatment for this disease. In this study, using recombinant MeVs with altered receptor usage patterns, we show that cell adhesion molecule (CADM) 1 and CADM2 are host factors critical for MeV spread in neurons and its neurovirulence. These findings further our understanding of the molecular mechanism of MeV neuropathogenicity.
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Affiliation(s)
- Ryuichi Takemoto
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yuichi Hirai
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Shumpei Watanabe
- Department of Microbiology, Faculty of Veterinary Medicine, Okayama University of Science, Ehime, Japan
| | - Hidetaka Harada
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Tateki Suzuki
- Laboratory of Medical Virology, Institute for Life and Medical Sciences, Kyoto University
| | - Takao Hashiguchi
- Laboratory of Medical Virology, Institute for Life and Medical Sciences, Kyoto University
| | - Yusuke Yanagi
- National Research Center for the Control and Prevention of Infectious Diseases, Nagasaki University, Nagasaki, Japan
| | - Yuta Shirogane
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
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7
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Escudero-Pérez B, Lalande A, Mathieu C, Lawrence P. Host–Pathogen Interactions Influencing Zoonotic Spillover Potential and Transmission in Humans. Viruses 2023; 15:v15030599. [PMID: 36992308 PMCID: PMC10060007 DOI: 10.3390/v15030599] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/13/2023] [Accepted: 02/20/2023] [Indexed: 02/24/2023] Open
Abstract
Emerging infectious diseases of zoonotic origin are an ever-increasing public health risk and economic burden. The factors that determine if and when an animal virus is able to spill over into the human population with sufficient success to achieve ongoing transmission in humans are complex and dynamic. We are currently unable to fully predict which pathogens may appear in humans, where and with what impact. In this review, we highlight current knowledge of the key host–pathogen interactions known to influence zoonotic spillover potential and transmission in humans, with a particular focus on two important human viruses of zoonotic origin, the Nipah virus and the Ebola virus. Namely, key factors determining spillover potential include cellular and tissue tropism, as well as the virulence and pathogenic characteristics of the pathogen and the capacity of the pathogen to adapt and evolve within a novel host environment. We also detail our emerging understanding of the importance of steric hindrance of host cell factors by viral proteins using a “flytrap”-type mechanism of protein amyloidogenesis that could be crucial in developing future antiviral therapies against emerging pathogens. Finally, we discuss strategies to prepare for and to reduce the frequency of zoonotic spillover occurrences in order to minimize the risk of new outbreaks.
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Affiliation(s)
- Beatriz Escudero-Pérez
- WHO Collaborating Centre for Arbovirus and Haemorrhagic Fever Reference and Research, Bernhard Nocht Institute for Tropical Medicine, 20359 Hamburg, Germany
- German Center for Infection Research (DZIF), Partner Site Hamburg-Luebeck-Borstel-Reims, 38124 Braunschweig, Germany
| | - Alexandre Lalande
- CIRI (Centre International de Recherche en Infectiologie), Team Neuro-Invasion, TROpism and VIRal Encephalitis, INSERM U1111, CNRS UMR5308, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, 69007 Lyon, France
| | - Cyrille Mathieu
- CIRI (Centre International de Recherche en Infectiologie), Team Neuro-Invasion, TROpism and VIRal Encephalitis, INSERM U1111, CNRS UMR5308, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, 69007 Lyon, France
| | - Philip Lawrence
- CONFLUENCE: Sciences et Humanités (EA 1598), Université Catholique de Lyon (UCLy), 69002 Lyon, France
- Correspondence:
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8
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Shirogane Y, Harada H, Hirai Y, Takemoto R, Suzuki T, Hashiguchi T, Yanagi Y. Collective fusion activity determines neurotropism of an en bloc transmitted enveloped virus. SCIENCE ADVANCES 2023; 9:eadf3731. [PMID: 36706187 PMCID: PMC9882980 DOI: 10.1126/sciadv.adf3731] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 12/29/2022] [Indexed: 06/09/2023]
Abstract
Measles virus (MeV), which is usually non-neurotropic, sometimes persists in the brain and causes subacute sclerosing panencephalitis (SSPE) several years after acute infection, serving as a model for persistent viral infections. The persisting MeVs have hyperfusogenic mutant fusion (F) proteins that likely enable cell-cell fusion at synapses and "en bloc transmission" between neurons. We here show that during persistence, F protein fusogenicity is generally enhanced by cumulative mutations, yet mutations paradoxically reducing the fusogenicity may be selected alongside the wild-type (non-neurotropic) MeV genome. A mutant F protein having SSPE-derived substitutions exhibits lower fusogenicity than the hyperfusogenic F protein containing some of those substitutions, but by the wild-type F protein coexpression, the fusogenicity of the former F protein is enhanced, while that of the latter is nearly abolished. These findings advance the understanding of the long-term process of MeV neuropathogenicity and provide critical insight into the genotype-phenotype relationships of en bloc transmitted viruses.
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Affiliation(s)
- Yuta Shirogane
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Hidetaka Harada
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Yuichi Hirai
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Ryuichi Takemoto
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Tateki Suzuki
- Laboratory of Medical Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Takao Hashiguchi
- Laboratory of Medical Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Yusuke Yanagi
- National Research Center for the Control and Prevention of Infectious Diseases, Nagasaki University, Nagasaki, Japan
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9
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Ferren M, Lalande A, Iampietro M, Canus L, Decimo D, Gerlier D, Porotto M, Mathieu C. Early Permissiveness of Central Nervous System Cells to Measles Virus Infection Is Determined by Hyperfusogenicity and Interferon Pressure. Viruses 2023; 15:229. [PMID: 36680268 PMCID: PMC9861295 DOI: 10.3390/v15010229] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 01/18/2023] Open
Abstract
The cessation of measles virus (MeV) vaccination in more than 40 countries as a consequence of the COVID-19 pandemic is expected to significantly increase deaths due to measles. MeV can infect the central nervous system (CNS) and lead to lethal encephalitis. Substantial part of virus sequences recovered from patients' brain were mutated in the matrix and/or the fusion protein (F). Mutations of the heptad repeat domain located in the C terminal (HRC) part of the F protein were often observed and were associated to hyperfusogenicity. These mutations promote brain invasion as a hallmark of neuroadaptation. Wild-type F allows entry into the brain, followed by limited spreading compared with the massive invasion observed for hyperfusogenic MeV. Taking advantage of our ex vivo models of hamster organotypic brain cultures, we investigated how the hyperfusogenic mutations in the F HRC domain modulate virus distribution in CNS cells. In this study, we also identified the dependence of neural cells susceptibility on both their activation state and destabilization of the virus F protein. Type I interferon (IFN-I) impaired mainly astrocytes and microglial cells permissiveness contrarily to neurons, opening a new way of consideration on the development of treatments against viral encephalitis.
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Affiliation(s)
- Marion Ferren
- CIRI, Centre International de Recherche en Infectiologie, Team Neuro-Invasion, TROpism and VIRal Encephalitis, Université de Lyon, Inserm, U1111, CNRS, UMR5308, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, 69007 Lyon, France
| | - Alexandre Lalande
- CIRI, Centre International de Recherche en Infectiologie, Team Neuro-Invasion, TROpism and VIRal Encephalitis, Université de Lyon, Inserm, U1111, CNRS, UMR5308, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, 69007 Lyon, France
| | - Mathieu Iampietro
- CIRI, Centre International de Recherche en Infectiologie, Team Immunobiology of the Viral infections, Université de Lyon, Inserm, U1111, CNRS, UMR5308, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, 69007 Lyon, France
| | - Lola Canus
- CIRI, Centre International de Recherche en Infectiologie, Team Neuro-Invasion, TROpism and VIRal Encephalitis, Université de Lyon, Inserm, U1111, CNRS, UMR5308, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, 69007 Lyon, France
| | - Didier Decimo
- CIRI, Centre International de Recherche en Infectiologie, Team Neuro-Invasion, TROpism and VIRal Encephalitis, Université de Lyon, Inserm, U1111, CNRS, UMR5308, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, 69007 Lyon, France
| | - Denis Gerlier
- CIRI, Centre International de Recherche en Infectiologie, Team Neuro-Invasion, TROpism and VIRal Encephalitis, Université de Lyon, Inserm, U1111, CNRS, UMR5308, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, 69007 Lyon, France
| | - Matteo Porotto
- Center for Host-Pathogen Interaction, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli,” 81100 Caserta, Italy
| | - Cyrille Mathieu
- CIRI, Centre International de Recherche en Infectiologie, Team Neuro-Invasion, TROpism and VIRal Encephalitis, Université de Lyon, Inserm, U1111, CNRS, UMR5308, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, 69007 Lyon, France
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10
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Rocamonde B, Hasan U, Mathieu C, Dutartre H. Viral-induced neuroinflammation: Different mechanisms converging to similar exacerbated glial responses. Front Neurosci 2023; 17:1108212. [PMID: 36937670 PMCID: PMC10017484 DOI: 10.3389/fnins.2023.1108212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 02/10/2023] [Indexed: 03/06/2023] Open
Abstract
There is increasing evidence that viral infections are the source/origin of various types of encephalitis, encephalomyelitis, and other neurological and cognitive disorders. While the involvement of certain viruses, such as the Nipah virus and measles virus, is known, the mechanisms of neural invasion and the factors that trigger intense immune reactions are not fully understood. Based on recent publications, this review discusses the role of the immune response, interactions between viruses and glial cells, and cytokine mediators in the development of inflammatory diseases in the central nervous system. It also highlights the significant gaps in knowledge regarding these mechanisms.
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Affiliation(s)
- Brenda Rocamonde
- Centre International de Recherche en Infectiologie, Équipe d’Oncogenèse Rétrovirale, INSERM U1111 - Université Claude Bernard Lyon 1, CNRS, UMR 5308, École Normale Supérieure de Lyon, Université Lyon, Lyon, France
- Equipe Labellisée par la Fondation pour la Recherche Médicale, Labex Ecofect, Lyon, France
- *Correspondence: Brenda Rocamonde,
| | - Uzma Hasan
- Centre International de Recherche en Infectiologie, Team Enveloped Viruses, Vectors and Immunotherapy INSERM U1111 - Université Claude Bernard Lyon 1, CNRS, UMR 5308, École Normale Supérieure de Lyon, Université Lyon, Lyon, France
- The Lyon Immunotherapy for Cancer Laboratory (LICL), Centre de Recherche en Cancérologie de Lyon (CRCL, UMR INSERM 1052 – CNRS 5286) Centre Léon Bérard, Lyon, France
| | - Cyrille Mathieu
- Centre International de Recherche en Infectiologie Équipe Neuro-Invasion, Tropism and Viral Encephalitis, INSERM U1111 - Université Claude Bernard Lyon 1, CNRS, UMR 5308, École Normale Supérieure de Lyon, Université Lyon, Lyon, France
- Cyrille Mathieu,
| | - Hélène Dutartre
- Centre International de Recherche en Infectiologie, Équipe d’Oncogenèse Rétrovirale, INSERM U1111 - Université Claude Bernard Lyon 1, CNRS, UMR 5308, École Normale Supérieure de Lyon, Université Lyon, Lyon, France
- Equipe Labellisée par la Fondation pour la Recherche Médicale, Labex Ecofect, Lyon, France
- Hélène Dutartre,
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11
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Papetti L, Amodeo ME, Sabatini L, Baggieri M, Capuano A, Graziola F, Marchi A, Bucci P, D’Ugo E, Kojouri M, Gioacchini S, Marras CE, Nucci CG, Ursitti F, Sforza G, Ferilli MAN, Monte G, Moavero R, Vigevano F, Valeriani M, Magurano F. Subacute Sclerosing Panencephalitis in Children: The Archetype of Non-Vaccination. Viruses 2022; 14:v14040733. [PMID: 35458463 PMCID: PMC9029616 DOI: 10.3390/v14040733] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 12/22/2022] Open
Abstract
Subacute sclerosing panencephalitis (SSPE) is a late complication of measles virus infection that occurs in previously healthy children. This disease has no specific cure and is associated with a high degree of disability and mortality. In recent years, there has been an increase in its incidence in relation to a reduction in vaccination adherence, accentuated by the COVID-19 pandemic. In this article, we take stock of the current evidence on SSPE and report our personal clinical experience. We emphasise that, to date, the only effective protection strategy against this disease is vaccination against the measles virus.
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Affiliation(s)
- Laura Papetti
- Neurology Unit, Department of Neuroscience, Bambino Gesù Children Hospital, IRCCS, 00165 Rome, Italy; (A.C.); (F.G.); (F.U.); (G.S.); (M.A.N.F.); (G.M.); (F.V.); (M.V.)
- Correspondence: (L.P.); (F.M.)
| | - Maria Elisa Amodeo
- Department of Pediatrics, Bambino Gesù Children Hospital, IRCCS, 00165 Rome, Italy; (M.E.A.); (L.S.)
- Department of System Medicine, Tor Vergata University of Rome, Viale Oxford 81, 00133 Roma, Italy;
| | - Letizia Sabatini
- Department of Pediatrics, Bambino Gesù Children Hospital, IRCCS, 00165 Rome, Italy; (M.E.A.); (L.S.)
- Department of System Medicine, Tor Vergata University of Rome, Viale Oxford 81, 00133 Roma, Italy;
| | - Melissa Baggieri
- National Measles Reference Laboratory—WHO/LabNet, Department of Infectious Diseases—Istituto Superiore di Sanità (ISS), 00165 Rome, Italy; (M.B.); (A.M.); (P.B.); (E.D.); (M.K.); (S.G.)
| | - Alessandro Capuano
- Neurology Unit, Department of Neuroscience, Bambino Gesù Children Hospital, IRCCS, 00165 Rome, Italy; (A.C.); (F.G.); (F.U.); (G.S.); (M.A.N.F.); (G.M.); (F.V.); (M.V.)
| | - Federica Graziola
- Neurology Unit, Department of Neuroscience, Bambino Gesù Children Hospital, IRCCS, 00165 Rome, Italy; (A.C.); (F.G.); (F.U.); (G.S.); (M.A.N.F.); (G.M.); (F.V.); (M.V.)
| | - Antonella Marchi
- National Measles Reference Laboratory—WHO/LabNet, Department of Infectious Diseases—Istituto Superiore di Sanità (ISS), 00165 Rome, Italy; (M.B.); (A.M.); (P.B.); (E.D.); (M.K.); (S.G.)
| | - Paola Bucci
- National Measles Reference Laboratory—WHO/LabNet, Department of Infectious Diseases—Istituto Superiore di Sanità (ISS), 00165 Rome, Italy; (M.B.); (A.M.); (P.B.); (E.D.); (M.K.); (S.G.)
| | - Emilio D’Ugo
- National Measles Reference Laboratory—WHO/LabNet, Department of Infectious Diseases—Istituto Superiore di Sanità (ISS), 00165 Rome, Italy; (M.B.); (A.M.); (P.B.); (E.D.); (M.K.); (S.G.)
| | - Maedeh Kojouri
- National Measles Reference Laboratory—WHO/LabNet, Department of Infectious Diseases—Istituto Superiore di Sanità (ISS), 00165 Rome, Italy; (M.B.); (A.M.); (P.B.); (E.D.); (M.K.); (S.G.)
| | - Silvia Gioacchini
- National Measles Reference Laboratory—WHO/LabNet, Department of Infectious Diseases—Istituto Superiore di Sanità (ISS), 00165 Rome, Italy; (M.B.); (A.M.); (P.B.); (E.D.); (M.K.); (S.G.)
| | - Carlo Efisio Marras
- Unit of Neurosurgery, Department of Neurosciences, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (C.E.M.); (C.G.N.)
| | - Carlotta Ginevra Nucci
- Unit of Neurosurgery, Department of Neurosciences, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (C.E.M.); (C.G.N.)
| | - Fabiana Ursitti
- Neurology Unit, Department of Neuroscience, Bambino Gesù Children Hospital, IRCCS, 00165 Rome, Italy; (A.C.); (F.G.); (F.U.); (G.S.); (M.A.N.F.); (G.M.); (F.V.); (M.V.)
| | - Giorgia Sforza
- Neurology Unit, Department of Neuroscience, Bambino Gesù Children Hospital, IRCCS, 00165 Rome, Italy; (A.C.); (F.G.); (F.U.); (G.S.); (M.A.N.F.); (G.M.); (F.V.); (M.V.)
| | - Michela Ada Noris Ferilli
- Neurology Unit, Department of Neuroscience, Bambino Gesù Children Hospital, IRCCS, 00165 Rome, Italy; (A.C.); (F.G.); (F.U.); (G.S.); (M.A.N.F.); (G.M.); (F.V.); (M.V.)
| | - Gabriele Monte
- Neurology Unit, Department of Neuroscience, Bambino Gesù Children Hospital, IRCCS, 00165 Rome, Italy; (A.C.); (F.G.); (F.U.); (G.S.); (M.A.N.F.); (G.M.); (F.V.); (M.V.)
| | - Romina Moavero
- Department of System Medicine, Tor Vergata University of Rome, Viale Oxford 81, 00133 Roma, Italy;
- Child Neurology and Psychiatry Unit, Department of System Medicine, Tor Vergata University of Rome, Viale Oxford 81, 00133 Rome, Italy
| | - Federico Vigevano
- Neurology Unit, Department of Neuroscience, Bambino Gesù Children Hospital, IRCCS, 00165 Rome, Italy; (A.C.); (F.G.); (F.U.); (G.S.); (M.A.N.F.); (G.M.); (F.V.); (M.V.)
| | - Massimiliano Valeriani
- Neurology Unit, Department of Neuroscience, Bambino Gesù Children Hospital, IRCCS, 00165 Rome, Italy; (A.C.); (F.G.); (F.U.); (G.S.); (M.A.N.F.); (G.M.); (F.V.); (M.V.)
| | - Fabio Magurano
- National Measles Reference Laboratory—WHO/LabNet, Department of Infectious Diseases—Istituto Superiore di Sanità (ISS), 00165 Rome, Italy; (M.B.); (A.M.); (P.B.); (E.D.); (M.K.); (S.G.)
- Correspondence: (L.P.); (F.M.)
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12
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Samia P, Oyieke K, Tunje D, Udwadia-Hegde A, Feemster K, Oncel I, Anlar B. Options in the Treatment of Subacute Sclerosing Panencephalitis: Implications for Low Resource Areas. Curr Treat Options Neurol 2022; 24:99-110. [PMID: 35340572 PMCID: PMC8933242 DOI: 10.1007/s11940-022-00710-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2021] [Indexed: 12/11/2022]
Abstract
Purpose of the review Subacute sclerosing panencephalitis (SSPE) is a rare, slowly progressive, and frequently fatal neurodegenerative disorder caused by measles virus. The risk of SSPE remains significant globally, with fluctuating incidence noted in in tandem with measles vaccine uptake. This review aims to explore the current global status of SSPE, its treatment, and preventive measures. Recent findings An increase in measles cases have been reported in various parts of the world for different reasons related to the regional context of the outbreak. With reduction in measles vaccine doses since the onset of the COVID-19 pandemic, the future risk of SSPE can only accelerate. In recent years, subsequent cases of SSPE have been reported in the period following documented measles outbreaks in different settings. Concomitantly, there have been efforts to evaluate the efficacy of immunomodulatory, antiviral, and anti-seizure therapies that could ameliorate the devastating effects of this disease. This review elucidates on these approaches and their limitations, reasons for poor vaccine coverage in low- and middle-income countries, as well as the possible solutions to the prevention of measles and eventual avoidance of SSPE. Summary Prevention of measles virus infection with the resultant sequelae would be the most effective strategy for the management of SSPE. This approach would be particularly important in low resource setting that currently bears the double burden of widespread communicable diseases and malnutrition.
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Affiliation(s)
- Pauline Samia
- Department of Paediatrics and Child Health, Medical College, Aga Khan University, 3rd Parklands Avenue, P.O BOX 30270 00100, East Tower block, fourth floor Nairobi, Kenya
- Brain and Mind Institute, Aga Khan University, Nairobi, Kenya
- Department of Public Health and Primary Care, Ghent University, Ghent, Belgium
| | - Katherine Oyieke
- Department of Paediatrics and Child Health, Medical College, Aga Khan University, 3rd Parklands Avenue, P.O BOX 30270 00100, East Tower block, fourth floor Nairobi, Kenya
| | - Dorcas Tunje
- Department of Paediatrics and Child Health, Medical College, Aga Khan University, 3rd Parklands Avenue, P.O BOX 30270 00100, East Tower block, fourth floor Nairobi, Kenya
| | - Anaita Udwadia-Hegde
- Department of Pediatric Neurosciences, SRCC NH Children’s Hospital, Mumbai, India
- Department of Pediatric Neurosciences, Jaslok Hospital & Research Center, Mumbai, India
| | - Kristen Feemster
- Department of Pediatrics, Division of Infectious Diseases, Global Health Center, Children’s Hospital of Philadelphia, Philadelphia, PA USA
| | - Ibrahim Oncel
- Department of Pediatric Neurology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Banu Anlar
- Department of Pediatric Neurology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
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13
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Short-stalk isoforms of CADM1 and CADM2 trigger neuropathogenic measles virus-mediated membrane fusion by interacting with the viral hemagglutinin. J Virol 2021; 96:e0194921. [PMID: 34788082 DOI: 10.1128/jvi.01949-21] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Measles virus (MeV), an enveloped RNA virus in the family Paramyxoviridae, usually causes acute febrile illness with skin rash, but in rare cases persists in the brain, causing a progressive neurological disorder, subacute sclerosing panencephalitis (SSPE). MeV bears two envelope glycoproteins, the hemagglutinin (H) and fusion (F) proteins. The H protein possesses a head domain that initially mediates receptor binding and a stalk domain that subsequently transmits the fusion-triggering signal to the F protein. We have recently shown that cell adhesion molecule 1 (CADM1, also known as IGSF4A, Necl-2, SynCAM1) and CADM2 (also known as IGSF4D, Necl-3, SynCAM2) are host factors enabling cell-cell membrane fusion mediated by hyperfusogenic F proteins of neuropathogenic MeVs as well as MeV spread between neurons lacking the known receptors. CADM1 and CADM2 interact in cis with the H protein on the same cell membrane, triggering hyperfusogenic F protein-mediated membrane fusion. Multiple isoforms of CADM1 and CADM2 containing various lengths of their stalk regions are generated by alternative splicing. Here we show that only short-stalk isoforms of CADM1 and CADM2 predominantly expressed in the brain induce hyperfusogenic F protein-mediated membrane fusion. While the known receptors interact in trans with the H protein through its head domain, these isoforms can interact in cis even with the H protein lacking the head domain and trigger membrane fusion, presumably through its stalk domain. Thus, our results unveil a new mechanism of viral fusion triggering by host factors. Importance Measles, an acute febrile illness with skin rash, is still an important cause of childhood morbidity and mortality worldwide. Measles virus (MeV), the causative agent of measles, may also cause a progressive neurological disorder, subacute sclerosing panencephalitis (SSPE), several years after acute infection. The disease is fatal, and no effective therapy is available. Recently, we have reported that cell adhesion molecule 1 (CADM1) and CADM2 are host factors enabling MeV cell-to-cell spread in neurons. These molecules interact in cis with the MeV attachment protein on the same cell membrane, triggering the fusion protein and causing membrane fusion. CADM1 and CADM2 are known to exist in multiple splice isoforms. In this study, we report that their short-stalk isoforms can induce membrane fusion by interacting in cis with the viral attachment protein independently of its receptor-binding head domain. This finding may have important implications for cis-acting fusion triggering by host factors.
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14
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Satoh Y, Higuchi K, Nishikawa D, Wakimoto H, Konami M, Sakamoto K, Kitagawa Y, Gotoh B, Jiang DP, Hotta H, Itoh M. M protein of subacute sclerosing panencephalitis virus, synergistically with the F protein, plays a crucial role in viral neuropathogenicity. J Gen Virol 2021; 102. [PMID: 34643483 PMCID: PMC8604190 DOI: 10.1099/jgv.0.001682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Subacute sclerosing panencephalitis (SSPE) is a rare fatal neurodegenerative disease caused by a measles virus (MV) variant, SSPE virus, that accumulates mutations during long-term persistent infection of the central nervous system (CNS). Clusters of mutations identified around the matrix (M) protein in many SSPE viruses suppress productive infectious particle release and accelerate cell–cell fusion, which are features of SSPE viruses. It was reported, however, that these defects of M protein function might not be correlated directly with promotion of neurovirulence, although they might enable establishment of persistent infection. Neuropathogenicity is closely related to the character of the viral fusion (F) protein, and amino acid substitution(s) in the F protein of some SSPE viruses confers F protein hyperfusogenicity, facilitating viral propagation in the CNS through cell–cell fusion and leading to neurovirulence. The F protein of an SSPE virus Kobe-1 strain, however, displayed only moderately enhanced fusion activity and required additional mutations in the M protein for neuropathogenicity in mice. We demonstrated here the mechanism for the M protein of the Kobe-1 strain supporting the fusion activity of the F protein and cooperatively inducing neurovirulence, even though each protein, independently, has no effect on virulence. The occurrence of SSPE has been estimated recently as one in several thousand in children who acquired measles under the age of 5 years, markedly higher than reported previously. The probability of a specific mutation (or mutations) occurring in the F protein conferring hyperfusogenicity and neuropathogenicity might not be sufficient to explain the high frequency of SSPE. The induction of neurovirulence by M protein synergistically with moderately fusogenic F protein could account for the high frequency of SSPE.
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Affiliation(s)
- Yuto Satoh
- Department of Microbiology, Faculty of Bio-Science, Nagahama Institute of Bio-Science and Technology, Nagahama, Shiga, Japan
| | - Kurara Higuchi
- Department of Microbiology, Faculty of Bio-Science, Nagahama Institute of Bio-Science and Technology, Nagahama, Shiga, Japan
| | - Daichi Nishikawa
- Department of Microbiology, Faculty of Bio-Science, Nagahama Institute of Bio-Science and Technology, Nagahama, Shiga, Japan
| | - Hiroshi Wakimoto
- Department of Microbiology, Faculty of Bio-Science, Nagahama Institute of Bio-Science and Technology, Nagahama, Shiga, Japan
| | - Miho Konami
- Department of Microbiology, Faculty of Bio-Science, Nagahama Institute of Bio-Science and Technology, Nagahama, Shiga, Japan
| | - Kento Sakamoto
- Department of Microbiology, Faculty of Bio-Science, Nagahama Institute of Bio-Science and Technology, Nagahama, Shiga, Japan
| | - Yoshinori Kitagawa
- Division of Microbiology and Infectious Diseases, Department of Pathology, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Bin Gotoh
- Division of Microbiology and Infectious Diseases, Department of Pathology, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Da-Peng Jiang
- Graduate School of Medicine, Kobe University, Kobe, Hyogo, Japan
| | - Hak Hotta
- Graduate School of Medicine, Kobe University, Kobe, Hyogo, Japan
- Present address: Faculty of Clinical Nutrition and Dietetics, Konan Women’s University, Kobe, Hyogo, Japan
| | - Masae Itoh
- Department of Microbiology, Faculty of Bio-Science, Nagahama Institute of Bio-Science and Technology, Nagahama, Shiga, Japan
- *Correspondence: Masae Itoh,
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15
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Greninger AL, Rybkina K, Lin MJ, Drew-Bear J, Marcink TC, Shean RC, Makhsous N, Boeckh M, Harder O, Bovier F, Burstein SR, Niewiesk S, Rima BK, Porotto M, Moscona A. Human parainfluenza virus evolution during lung infection of immunocompromised humans promotes viral persistence. J Clin Invest 2021; 131:150506. [PMID: 34609969 DOI: 10.1172/jci150506] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 10/01/2021] [Indexed: 11/17/2022] Open
Abstract
The capacity of respiratory viruses to undergo evolution within the respiratory tract raises the possibility of evolution under the selective pressure of the host environment or drug treatment. Long-term infections in immunocompromised hosts are potential drivers of viral evolution and development of infectious variants. We show that intra-host evolution in chronic human parainfluenza virus 3 (HPIV3) infection in immunocompromised individuals elicited mutations that favor viral entry and persistence, suggesting that similar processes may operate across enveloped respiratory viruses. We profiled longitudinal HPIV3 infections from two immunocompromised individuals that persisted for 278 and 98 days. Mutations accrued in the HPIV3 attachment protein hemagglutinin-neuraminidase (HN), including the first in vivo mutation in HN's receptor binding site responsible for activating the viral fusion process. Fixation of this mutation was associated with exposure to a drug that cleaves host cell sialic acid moieties. Longitudinal adaptation of HN was associated with features that promote viral entry and persistence in cells, including greater avidity for sialic acid and more active fusion activity in vitro, but not with antibody escape. Long term infection thus led to mutations promoting viral persistence, suggesting that host-directed therapeutics may support the evolution of viruses that alter their biophysical characteristics to persist in the face of these agents in vivo.
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Affiliation(s)
- Alexander L Greninger
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, United States of America
| | - Ksenia Rybkina
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, United States of America
| | - Michelle J Lin
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, United States of America
| | - Jennifer Drew-Bear
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, United States of America
| | - Tara C Marcink
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, United States of America
| | - Ryan C Shean
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, United States of America
| | - Negar Makhsous
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, United States of America
| | - Michael Boeckh
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, United States of America
| | - Olivia Harder
- Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, United States of America
| | - Francesca Bovier
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, United States of America
| | - Shana R Burstein
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, United States of America
| | - Stefan Niewiesk
- Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, United States of America
| | - Bert K Rima
- School of Medicine Dentistry and Biomedical Sceinces, Queen's University of Belfast, Belfast, United Kingdom
| | - Matteo Porotto
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, United States of America
| | - Anne Moscona
- Department of Microbiology and Immunology, Columbia University Vagelos College of Physicians and Surgeons, New York, United States of America
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16
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CADM1 and CADM2 Trigger Neuropathogenic Measles Virus-Mediated Membrane Fusion by Acting in cis. J Virol 2021; 95:e0052821. [PMID: 33910952 DOI: 10.1128/jvi.00528-21] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Measles virus (MeV), an enveloped RNA virus in the family Paramyxoviridae, is still an important cause of childhood morbidity and mortality worldwide. MeV usually causes acute febrile illness with skin rash, but in rare cases persists in the brain, causing a progressive neurological disorder, subacute sclerosing panencephalitis (SSPE). The disease is fatal, and no effective therapy is currently available. Although transsynaptic cell-to-cell transmission is thought to account for MeV propagation in the brain, neurons do not express the known receptors for MeV. Recent studies have shown that hyperfusogenic changes in the MeV fusion (F) protein play a key role in MeV propagation in the brain. However, how such mutant viruses spread in neurons remains unexplained. Here, we show that cell adhesion molecule 1 (CADM1; also known as IGSF4A, Necl-2, and SynCAM1) and CADM2 (also known as IGSF4D, Necl-3, SynCAM2) are host factors that enable MeV to cause membrane fusion in cells lacking the known receptors and to spread between neurons. During enveloped virus entry, a cellular receptor generally interacts in trans with the attachment protein on the envelope. However, CADM1 and CADM2 interact in cis with the MeV attachment protein on the same cell membrane, causing the fusion protein triggering and membrane fusion. Knockdown of CADM1 and CADM2 inhibits syncytium formation and virus transmission between neurons that are both mediated by hyperfusogenic F proteins. Thus, our results unravel the molecular mechanism (receptor-mimicking cis-acting fusion triggering) by which MeV spreads transsynaptically between neurons, thereby causing SSPE. IMPORTANCE Measles virus (MeV), an enveloped RNA virus, is the causative agent of measles, which is still an important cause of childhood morbidity and mortality worldwide. Persistent MeV infection in the brain causes a fatal progressive neurological disorder, subacute sclerosing panencephalitis (SSPE), several years after acute infection. However, how MeV spreads in neurons, which are mainly affected in SSPE, remains largely unknown. In this study, we demonstrate that cell adhesion molecule 1 (CADM1) and CADM2 are host factors enabling MeV spread between neurons. During enveloped virus entry, a cellular receptor generally interacts in trans with the attachment protein on the viral membrane (envelope). Remarkably, CADM1 and CADM2 interact in cis with the MeV attachment protein on the same membrane, triggering the fusion protein and causing membrane fusion, as viral receptors usually do in trans. Careful screening may lead to more examples of such "receptor-mimicking cis-acting fusion triggering" in other viruses.
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Molecular Features of the Measles Virus Viral Fusion Complex That Favor Infection and Spread in the Brain. mBio 2021; 12:e0079921. [PMID: 34061592 PMCID: PMC8263006 DOI: 10.1128/mbio.00799-21] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Measles virus (MeV) bearing a single amino acid change in the fusion protein (F)—L454W—was isolated from two patients who died of MeV central nervous system (CNS) infection. This mutation in F confers an advantage over wild-type virus in the CNS, contributing to disease in these patients. Using murine ex vivo organotypic brain cultures and human induced pluripotent stem cell-derived brain organoids, we show that CNS adaptive mutations in F enhance the spread of virus ex vivo. The spread of virus in human brain organoids is blocked by an inhibitory peptide that targets F, confirming that dissemination in the brain tissue is attributable to F. A single mutation in MeV F thus alters the fusion complex to render MeV more neuropathogenic.
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Fitness selection of hyperfusogenic measles virus F proteins associated with neuropathogenic phenotypes. Proc Natl Acad Sci U S A 2021; 118:2026027118. [PMID: 33903248 DOI: 10.1073/pnas.2026027118] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Measles virus (MeV) is resurgent and caused >200,000 deaths in 2019. MeV infection can establish a chronic latent infection of the brain that can recrudesce months to years after recovery from the primary infection. Recrudescent MeV leads to fatal subacute sclerosing panencephalitis (SSPE) or measles inclusion body encephalitis (MIBE) as the virus spreads across multiple brain regions. Most clinical isolates of SSPE/MIBE strains show mutations in the fusion (F) gene that result in a hyperfusogenic phenotype in vitro and allow for efficient spread in primary human neurons. Wild-type MeV receptor-binding protein is indispensable for manifesting these mutant F phenotypes, even though neurons lack canonical MeV receptors (CD150/SLAMF1 or nectin-4). How such hyperfusogenic F mutants are selected and whether they confer a fitness advantage for efficient neuronal spread is unresolved. To better understand the fitness landscape that allows for the selection of such hyperfusogenic F mutants, we conducted a screen of ≥3.1 × 105 MeV-F point mutants in their genomic context. We rescued and amplified our genomic MeV-F mutant libraries in BSR-T7 cells under conditions in which MeV-F-T461I (a known SSPE mutant), but not wild-type MeV, can spread. We recovered known SSPE mutants but also characterized at least 15 hyperfusogenic F mutations with an SSPE phenotype. Structural mapping of these mutants onto the prefusion MeV-F trimer confirm and extend our understanding of the F regulatory domains in MeV-F. Our list of hyperfusogenic F mutants is a valuable resource for future studies into MeV neuropathogenesis and the regulation of paramyxovirus F.
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19
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Nath A, Johnson TP. Mechanisms of viral persistence in the brain and therapeutic approaches. FEBS J 2021; 289:2145-2161. [PMID: 33844441 DOI: 10.1111/febs.15871] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/31/2021] [Accepted: 04/09/2021] [Indexed: 12/16/2022]
Abstract
There is growing recognition of the diversity of viruses that can infect the cells of the central nervous system (CNS). While the majority of CNS infections are successfully cleared by the immune response, some viral infections persist in the CNS. As opposed to resolved infections, persistent viruses can contribute to ongoing tissue damage and neuroinflammatory processes. In this manuscript, we provide an overview of the current understanding of factors that lead to viral persistence in the CNS including how viruses enter the brain, how these pathogens evade antiviral immune system responses, and how viruses survive and transmit within the CNS. Further, as the CNS may serve as a unique viral reservoir, we examine the ways in which persistent viruses in the CNS are being targeted therapeutically.
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Affiliation(s)
- Avindra Nath
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Tory P Johnson
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA.,Department of Neurology, Johns Hopkins University, Baltimore, MD, USA
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20
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Busch J, Chey S, Sieg M, Vahlenkamp TW, Liebert UG. Mutated Measles Virus Matrix and Fusion Protein Influence Viral Titer In Vitro and Neuro-Invasion in Lewis Rat Brain Slice Cultures. Viruses 2021; 13:605. [PMID: 33916225 PMCID: PMC8066528 DOI: 10.3390/v13040605] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/30/2021] [Accepted: 03/30/2021] [Indexed: 12/20/2022] Open
Abstract
Measles virus (MV) can cause severe acute diseases as well as long-lasting clinical deteriorations due to viral-induced immunosuppression and neuronal manifestation. How the virus enters the brain and manages to persist in neuronal tissue is not fully understood. Various mutations in the viral genes were found in MV strains isolated from patient brains. In this study, reverse genetics was used to introduce mutations in the fusion, matrix and polymerase genes of MV. The generated virus clones were characterized in cell culture and used to infect rat brain slice cultures. A mutation in the carboxy-terminal domain of the matrix protein (R293Q) promoted the production of progeny virions. This effect was observed in Vero cells irrespective of the expression of the signaling lymphocyte activation molecule (SLAM). Furthermore, a mutation in the fusion protein (I225M) induced syncytia formation on Vero cells in the absence of SLAM and promoted viral spread throughout the rat brain slices. In this study, a solid ex vivo model was established to elucidate the MV mutations contributing to neural manifestation.
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Affiliation(s)
- Johannes Busch
- Institute of Virology, University Hospital Leipzig, Johannisallee 30, 04103 Leipzig, Germany; (S.C.); (U.G.L.)
- Faculty of Veterinary Medicine, Institute of Virology, Leipzig University, An den Tierkliniken 29, 04103 Leipzig, Germany; (M.S.); (T.W.V.)
| | - Soroth Chey
- Institute of Virology, University Hospital Leipzig, Johannisallee 30, 04103 Leipzig, Germany; (S.C.); (U.G.L.)
| | - Michael Sieg
- Faculty of Veterinary Medicine, Institute of Virology, Leipzig University, An den Tierkliniken 29, 04103 Leipzig, Germany; (M.S.); (T.W.V.)
| | - Thomas W. Vahlenkamp
- Faculty of Veterinary Medicine, Institute of Virology, Leipzig University, An den Tierkliniken 29, 04103 Leipzig, Germany; (M.S.); (T.W.V.)
| | - Uwe G. Liebert
- Institute of Virology, University Hospital Leipzig, Johannisallee 30, 04103 Leipzig, Germany; (S.C.); (U.G.L.)
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21
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Marcink TC, Wang T, des Georges A, Porotto M, Moscona A. Human parainfluenza virus fusion complex glycoproteins imaged in action on authentic viral surfaces. PLoS Pathog 2020; 16:e1008883. [PMID: 32956394 PMCID: PMC7529294 DOI: 10.1371/journal.ppat.1008883] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 10/01/2020] [Accepted: 08/13/2020] [Indexed: 01/21/2023] Open
Abstract
Infection by human parainfluenza viruses (HPIVs) causes widespread lower respiratory diseases, including croup, bronchiolitis, and pneumonia, and there are no vaccines or effective treatments for these viruses. HPIV3 is a member of the Respirovirus species of the Paramyxoviridae family. These viruses are pleomorphic, enveloped viruses with genomes composed of single-stranded negative-sense RNA. During viral entry, the first step of infection, the viral fusion complex, comprised of the receptor-binding glycoprotein hemagglutinin-neuraminidase (HN) and the fusion glycoprotein (F), mediates fusion upon receptor binding. The HPIV3 transmembrane protein HN, like the receptor-binding proteins of other related viruses that enter host cells using membrane fusion, binds to a receptor molecule on the host cell plasma membrane, which triggers the F glycoprotein to undergo major conformational rearrangements, promoting viral entry. Subsequent fusion of the viral and host membranes allows delivery of the viral genetic material into the host cell. The intermediate states in viral entry are transient and thermodynamically unstable, making it impossible to understand these transitions using standard methods, yet understanding these transition states is important for expanding our knowledge of the viral entry process. In this study, we use cryo-electron tomography (cryo-ET) to dissect the stepwise process by which the receptor-binding protein triggers F-mediated fusion, when forming a complex with receptor-bearing membranes. Using an on-grid antibody capture method that facilitates examination of fresh, biologically active strains of virus directly from supernatant fluids and a series of biological tools that permit the capture of intermediate states in the fusion process, we visualize the series of events that occur when a pristine, authentic viral particle interacts with target receptors and proceeds from the viral entry steps of receptor engagement to membrane fusion.
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Affiliation(s)
- Tara C. Marcink
- Department of Pediatrics, Columbia University Vagelos College of Physicians & Surgeons, New York, New York, United States of America
- Center for Host-Pathogen Interaction, Columbia University Vagelos College of Physicians & Surgeons, New York, New York, United States of America
| | - Tong Wang
- Structural Biology Initiative, CUNY Advanced Science Research Center, New York, New York, United States of America
| | - Amedee des Georges
- Structural Biology Initiative, CUNY Advanced Science Research Center, New York, New York, United States of America
- Department of Chemistry and Biochemistry, City College of New York, New York, New York, United States of America
| | - Matteo Porotto
- Department of Pediatrics, Columbia University Vagelos College of Physicians & Surgeons, New York, New York, United States of America
- Center for Host-Pathogen Interaction, Columbia University Vagelos College of Physicians & Surgeons, New York, New York, United States of America
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Anne Moscona
- Department of Pediatrics, Columbia University Vagelos College of Physicians & Surgeons, New York, New York, United States of America
- Center for Host-Pathogen Interaction, Columbia University Vagelos College of Physicians & Surgeons, New York, New York, United States of America
- Department of Microbiology & Immunology, Columbia University Vagelos College of Physicians & Surgeons, New York, New York, United States of America
- Department of Physiology & Columbia University Vagelos College of Physicians & Surgeons, New York, New York, United States of America
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Shirogane Y, Hashiguchi T, Yanagi Y. Weak cis and trans Interactions of the Hemagglutinin with Receptors Trigger Fusion Proteins of Neuropathogenic Measles Virus Isolates. J Virol 2020; 94:e01727-19. [PMID: 31619560 PMCID: PMC6955248 DOI: 10.1128/jvi.01727-19] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 10/10/2019] [Indexed: 12/13/2022] Open
Abstract
Measles virus (MeV) is an enveloped RNA virus bearing two envelope glycoproteins, the hemagglutinin (H) and fusion (F) proteins. Upon receptor binding, the H protein triggers conformational changes of the F protein, causing membrane fusion and subsequent virus entry. MeV may persist in the brain, infecting neurons and causing fatal subacute sclerosing panencephalitis (SSPE). Since neurons do not express either of the MeV receptors, signaling lymphocytic activation molecule (SLAM; also called CD150) and nectin-4, how MeV propagates in neurons is unknown. Recent studies have shown that specific substitutions in the F protein found in MeV isolates from SSPE patients are critical for MeV neuropathogenicity by rendering the protein unstable and hyperfusogenic. Recombinant MeVs possessing the F proteins with such substitutions can spread in primary human neurons and in the brains of mice and hamsters and induce cell-cell fusion in cells lacking SLAM and nectin-4. Here, we show that receptor-blind mutant H proteins that have decreased binding affinities to receptors can support membrane fusion mediated by hyperfusogenic mutant F proteins, but not the wild-type F protein, in cells expressing the corresponding receptors. The results suggest that weak interactions of the H protein with certain molecules (putative neuron receptors) trigger hyperfusogenic F proteins in SSPE patients. Notably, where cell-cell contacts are ensured, the weak cis interaction of the H protein with SLAM on the same cell surface also could trigger hyperfusogenic F proteins. Some enveloped viruses may exploit such cis interactions with receptors to infect target cells, especially in cell-to-cell transmission.IMPORTANCE Measles virus (MeV) may persist in the brain, causing incurable subacute sclerosing panencephalitis (SSPE). Because neurons, the main target in SSPE, do not express receptors for wild-type (WT) MeV, how MeV propagates in the brain is a key question for the disease. Recent studies have demonstrated that specific substitutions in the MeV fusion (F) protein are critical for neuropathogenicity. Here, we show that weak cis and trans interactions of the MeV attachment protein with receptors that are not sufficient to trigger the WT MeV F protein can trigger the mutant F proteins from neuropathogenic MeV isolates. Our study not only provides an important clue to understand MeV neuropathogenicity but also reveals a novel viral strategy to expand cell tropism.
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Affiliation(s)
- Yuta Shirogane
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Takao Hashiguchi
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Yusuke Yanagi
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
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23
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Ferren M, Horvat B, Mathieu C. Measles Encephalitis: Towards New Therapeutics. Viruses 2019; 11:E1017. [PMID: 31684034 PMCID: PMC6893791 DOI: 10.3390/v11111017] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/25/2019] [Accepted: 10/31/2019] [Indexed: 12/20/2022] Open
Abstract
Measles remains a major cause of morbidity and mortality worldwide among vaccine preventable diseases. Recent decline in vaccination coverage resulted in re-emergence of measles outbreaks. Measles virus (MeV) infection causes an acute systemic disease, associated in certain cases with central nervous system (CNS) infection leading to lethal neurological disease. Early following MeV infection some patients develop acute post-infectious measles encephalitis (APME), which is not associated with direct infection of the brain. MeV can also infect the CNS and cause sub-acute sclerosing panencephalitis (SSPE) in immunocompetent people or measles inclusion-body encephalitis (MIBE) in immunocompromised patients. To date, cellular and molecular mechanisms governing CNS invasion are still poorly understood. Moreover, the known MeV entry receptors are not expressed in the CNS and how MeV enters and spreads in the brain is not fully understood. Different antiviral treatments have been tested and validated in vitro, ex vivo and in vivo, mainly in small animal models. Most treatments have high efficacy at preventing infection but their effectiveness after CNS manifestations remains to be evaluated. This review describes MeV neural infection and current most advanced therapeutic approaches potentially applicable to treat MeV CNS infection.
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Affiliation(s)
- Marion Ferren
- CIRI, International Center for Infectiology Research, INSERM U1111, University of Lyon, University Claude Bernard Lyon 1, CNRS, UMR5308, Ecole Normale Supérieure de Lyon, France.
| | - Branka Horvat
- CIRI, International Center for Infectiology Research, INSERM U1111, University of Lyon, University Claude Bernard Lyon 1, CNRS, UMR5308, Ecole Normale Supérieure de Lyon, France.
| | - Cyrille Mathieu
- CIRI, International Center for Infectiology Research, INSERM U1111, University of Lyon, University Claude Bernard Lyon 1, CNRS, UMR5308, Ecole Normale Supérieure de Lyon, France.
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24
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Garg RK, Mahadevan A, Malhotra HS, Rizvi I, Kumar N, Uniyal R. Subacute sclerosing panencephalitis. Rev Med Virol 2019; 29:e2058. [PMID: 31237061 DOI: 10.1002/rmv.2058] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 05/05/2019] [Accepted: 05/07/2019] [Indexed: 12/12/2022]
Abstract
Subacute sclerosing panencephalitis (SSPE) is a slowly progressive brain disorder caused by mutant measles virus. SSPE affects younger age groups. SSPE incidence is proportional to that of measles. High-income countries have seen substantial decline in SSPE incidence following universal vaccination against measles. SSPE virus differs from wild measles virus. Measles virus genome recovered from the autopsied brain tissues demonstrates clustered mutations in virus genome particularly in the M gene. These mutations destroy the structure and functioning of the encoded proteins. Complete infectious virus particle has rarely been recovered from the brain. Human neurons lack required receptor for entry of measles virus inside the neurons. Recent in vitro studies suggest that mutations in F protein confer hyperfusogenic properties to measles virus facilitating transneuronal viral spread. The inflammatory response in the brain leads to extensive tissue damage. Clinically, SSPE is characterized by florid panencephalitis. Clinically, SSPE is characterized by cognitive decline, periodic myoclonus, gait abnormalities, vision loss, and ultimately to a vegetative state. Chorioretinitis is a common ocular abnormality. Electroencephalography (EEG) shows characteristic periodic discharges. Neuroimaging demonstrates periventricular white matter signal abnormalities. In advanced stages, there is marked cerebral atrophy. Definitive diagnosis requires demonstration of elevated measles antibody titers in cerebrospinal fluid (CSF). Many drugs have been used to stabilize the course of the disease but without evidence from randomized clinical trials. Six percent of patients may experience prolonged spontaneous remission. Fusion inhibitor peptide may, in the future, be exploited to treat SSPE. A universal vaccination against measles is the only proven way to tackle this menace currently.
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Affiliation(s)
| | - Anita Mahadevan
- Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Hardeep Singh Malhotra
- Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Imran Rizvi
- Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Neeraj Kumar
- Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Ravi Uniyal
- Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore, India
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