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Forsberg BO, Shah PNM, Burt A. A robust normalized local filter to estimate compositional heterogeneity directly from cryo-EM maps. Nat Commun 2023; 14:5802. [PMID: 37726277 PMCID: PMC10509264 DOI: 10.1038/s41467-023-41478-1] [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: 03/31/2023] [Accepted: 09/06/2023] [Indexed: 09/21/2023] Open
Abstract
Cryo electron microscopy (cryo-EM) is used by biological research to visualize biomolecular complexes in 3D, but the heterogeneity of cryo-EM reconstructions is not easily estimated. Current processing paradigms nevertheless exert great effort to reduce flexibility and heterogeneity to improve the quality of the reconstruction. Clustering algorithms are typically employed to identify populations of data with reduced variability, but lack assessment of remaining heterogeneity. Here we develope a fast and simple algorithm based on spatial filtering to estimate the heterogeneity of a reconstruction. In the absence of flexibility, this estimate approximates macromolecular component occupancy. We show that our implementation can derive reasonable input parameters, that composition heterogeneity can be estimated based on contrast loss, and that the reconstruction can be modified accordingly to emulate altered constituent occupancy. This stands to benefit conventionally employed maximum-likelihood classification methods, whereas we here limit considerations to cryo-EM map interpretation, quantification, and particle-image signal subtraction.
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Affiliation(s)
- Björn O Forsberg
- Department of Physiology and Pharmacology, Karolinska Institute, 171 77, Stockholm, Sweden.
- Division of Structural Biology, University of Oxford, OX3 7BN, Oxford, UK.
| | - Pranav N M Shah
- Division of Structural Biology, University of Oxford, OX3 7BN, Oxford, UK
| | - Alister Burt
- MRC Laboratory of Molecular Biology, Cambridge, CB2 0QH, UK
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2
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Shah PNM, Gilchrist JB, Forsberg BO, Burt A, Howe A, Mosalaganti S, Wan W, Radecke J, Chaban Y, Sutton G, Stuart DI, Boyce M. Characterization of the rotavirus assembly pathway in situ using cryoelectron tomography. Cell Host Microbe 2023; 31:604-615.e4. [PMID: 36996819 PMCID: PMC7615348 DOI: 10.1016/j.chom.2023.03.004] [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: 11/06/2022] [Revised: 01/27/2023] [Accepted: 03/06/2023] [Indexed: 03/30/2023]
Abstract
Rotavirus assembly is a complex process that involves the stepwise acquisition of protein layers in distinct intracellular locations to form the fully assembled particle. Understanding and visualization of the assembly process has been hampered by the inaccessibility of unstable intermediates. We characterize the assembly pathway of group A rotaviruses observed in situ within cryo-preserved infected cells through the use of cryoelectron tomography of cellular lamellae. Our findings demonstrate that the viral polymerase VP1 recruits viral genomes during particle assembly, as revealed by infecting with a conditionally lethal mutant. Additionally, pharmacological inhibition to arrest the transiently enveloped stage uncovered a unique conformation of the VP4 spike. Subtomogram averaging provided atomic models of four intermediate states, including a pre-packaging single-layered intermediate, the double-layered particle, the transiently enveloped double-layered particle, and the fully assembled triple-layered virus particle. In summary, these complementary approaches enable us to elucidate the discrete steps involved in forming an intracellular rotavirus particle.
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Affiliation(s)
- Pranav N M Shah
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK; CAMS Oxford Institute, Nuffield Department of Medicine, University of Oxford, Old Road Campus, Headington, Oxford, UK.
| | - James B Gilchrist
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Björn O Forsberg
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK; Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden
| | - Alister Burt
- Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge, UK
| | - Andrew Howe
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Shyamal Mosalaganti
- Life Sciences Institute and Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - William Wan
- Vanderbilt University Center for Structural Biology, PMB 407917, 465 21st Ave S, 5140 MRB3, Nashville, TN, USA
| | - Julika Radecke
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Yuriy Chaban
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Geoff Sutton
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - David I Stuart
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK; CAMS Oxford Institute, Nuffield Department of Medicine, University of Oxford, Old Road Campus, Headington, Oxford, UK; Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK.
| | - Mark Boyce
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK.
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3
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Shimmon GL, Shah PNM, Fry E, Stuart DI, Hawes P, Netherton CL. Purification of African Swine Fever Virus. Methods Mol Biol 2022; 2503:179-186. [PMID: 35575895 DOI: 10.1007/978-1-0716-2333-6_13] [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] [Indexed: 10/18/2022]
Abstract
African swine fever virus is a cytolytic virus that leads to the apoptosis of both cultured cells and primary macrophages. Cell culture supernatants of virus-infected cells are routinely used for virological and immunological studies, despite differences in the biological behavior between such preparations and highly purified virus. In addition, more recent data suggests that exosomes containing viral proteins may be secreted from infected cells. While African swine fever virus can be purified through a number of methods, in our hands Percoll provides the most robust method of separating virus from cellular contaminants.
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Affiliation(s)
- Gareth L Shimmon
- African Swine Fever Vaccinology Group, The Pirbright Institute, Pirbright, Woking, UK
| | - Pranav N M Shah
- Division of Structural Biology, University of Oxford, Wellcome Trust Centre for Human Genetics, Headington, Oxford, UK
| | - Elizabeth Fry
- Division of Structural Biology, University of Oxford, Wellcome Trust Centre for Human Genetics, Headington, Oxford, UK
| | - David I Stuart
- Division of Structural Biology, University of Oxford, Wellcome Trust Centre for Human Genetics, Headington, Oxford, UK
| | - Pippa Hawes
- Bioimaging, The Pirbright Institute, Pirbright, Woking, UK
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4
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Huo J, Bas AL, Ruza RR, Duyvesteyn HME, Mikolajek H, Malinauskas T, Tan TK, Rijal P, Dumoux M, Ward PN, Ren J, Zhou D, Harrison PJ, Weckener M, Clare DK, Vogirala VK, Radecke J, Moynié L, Zhao Y, Gilbert-Jaramillo J, Knight ML, Tree JA, Buttigieg KR, Coombes N, Elmore MJ, Carroll MW, Carrique L, Shah PNM, James W, Townsend AR, Stuart DI, Owens RJ, Naismith JH. Author Correction: Neutralizing nanobodies bind SARS-CoV-2 spike RBD and block interaction with ACE2. Nat Struct Mol Biol 2021; 28:326. [PMID: 33536566 PMCID: PMC7857722 DOI: 10.1038/s41594-021-00566-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Jiandong Huo
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Audrey Le Bas
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Reinis R Ruza
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Helen M E Duyvesteyn
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Halina Mikolajek
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Tomas Malinauskas
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Tiong Kit Tan
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Pramila Rijal
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
- Centre for Translational Immunology, Chinse Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, UK
| | - Maud Dumoux
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK
| | - Philip N Ward
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Jingshan Ren
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Daming Zhou
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Peter J Harrison
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Miriam Weckener
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK
| | - Daniel K Clare
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Vinod K Vogirala
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Julika Radecke
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Lucile Moynié
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK
| | - Yuguang Zhao
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | | | - Michael L Knight
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Julia A Tree
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Karen R Buttigieg
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Naomi Coombes
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Michael J Elmore
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Miles W Carroll
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Loic Carrique
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Pranav N M Shah
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - William James
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Alain R Townsend
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
- Centre for Translational Immunology, Chinse Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, UK
| | - David I Stuart
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Raymond J Owens
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK.
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK.
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK.
| | - James H Naismith
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK.
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK.
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK.
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5
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Huo J, Le Bas A, Ruza RR, Duyvesteyn HME, Mikolajek H, Malinauskas T, Tan TK, Rijal P, Dumoux M, Ward PN, Ren J, Zhou D, Harrison PJ, Weckener M, Clare DK, Vogirala VK, Radecke J, Moynié L, Zhao Y, Gilbert-Jaramillo J, Knight ML, Tree JA, Buttigieg KR, Coombes N, Elmore MJ, Carroll MW, Carrique L, Shah PNM, James W, Townsend AR, Stuart DI, Owens RJ, Naismith JH. Author Correction: Neutralizing nanobodies bind SARS-CoV-2 spike RBD and block interaction with ACE2. Nat Struct Mol Biol 2020; 27:1094. [PMID: 33060850 PMCID: PMC7557317 DOI: 10.1038/s41594-020-00527-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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Affiliation(s)
- Jiangdong Huo
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Audrey Le Bas
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Reinis R Ruza
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Helen M E Duyvesteyn
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Halina Mikolajek
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Tomas Malinauskas
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Tiong Kit Tan
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Pramila Rijal
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
- Centre for Translational Immunology, Chinse Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, UK
| | - Maud Dumoux
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK
| | - Philip N Ward
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Jingshan Ren
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Daming Zhou
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Peter J Harrison
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Miriam Weckener
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK
| | - Daniel K Clare
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Vinod K Vogirala
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Julika Radecke
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Lucile Moynié
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK
| | - Yuguang Zhao
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | | | - Michael L Knight
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Julia A Tree
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Karen R Buttigieg
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Naomi Coombes
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Michael J Elmore
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Miles W Carroll
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Loic Carrique
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Pranav N M Shah
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - William James
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Alain R Townsend
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
- Centre for Translational Immunology, Chinse Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, UK
| | - David I Stuart
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Raymond J Owens
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK.
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK.
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK.
| | - James H Naismith
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK.
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK.
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK.
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6
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Zhou D, Duyvesteyn HME, Chen CP, Huang CG, Chen TH, Shih SR, Lin YC, Cheng CY, Cheng SH, Huang YC, Lin TY, Ma C, Huo J, Carrique L, Malinauskas T, Ruza RR, Shah PNM, Tan TK, Rijal P, Donat RF, Godwin K, Buttigieg KR, Tree JA, Radecke J, Paterson NG, Supasa P, Mongkolsapaya J, Screaton GR, Carroll MW, Gilbert-Jaramillo J, Knight ML, James W, Owens RJ, Naismith JH, Townsend AR, Fry EE, Zhao Y, Ren J, Stuart DI, Huang KYA. Structural basis for the neutralization of SARS-CoV-2 by an antibody from a convalescent patient. Nat Struct Mol Biol 2020; 27:950-958. [PMID: 32737466 DOI: 10.1038/s41594-020-0480-y] [Citation(s) in RCA: 217] [Impact Index Per Article: 54.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 07/10/2020] [Indexed: 12/28/2022]
Abstract
The COVID-19 pandemic has had an unprecedented health and economic impact and there are currently no approved therapies. We have isolated an antibody, EY6A, from an individual convalescing from COVID-19 and have shown that it neutralizes SARS-CoV-2 and cross-reacts with SARS-CoV-1. EY6A Fab binds the receptor binding domain (RBD) of the viral spike glycoprotein tightly (KD of 2 nM), and a 2.6-Å-resolution crystal structure of an RBD-EY6A Fab complex identifies the highly conserved epitope, away from the ACE2 receptor binding site. Residues within this footprint are key to stabilizing the pre-fusion spike. Cryo-EM analyses of the pre-fusion spike incubated with EY6A Fab reveal a complex of the intact spike trimer with three Fabs bound and two further multimeric forms comprising the destabilized spike attached to Fab. EY6A binds what is probably a major neutralizing epitope, making it a candidate therapeutic for COVID-19.
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Affiliation(s)
- Daming Zhou
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Helen M E Duyvesteyn
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and National Yang-Ming University, Taipei, Taiwan
| | - Chung-Guei Huang
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ting-Hua Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Shin-Ru Shih
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yi-Chun Lin
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and Taipei Medical University, Taipei, Taiwan
| | - Chien-Yu Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and National Yang-Ming University, Taipei, Taiwan
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and Taipei Medical University, Taipei, Taiwan
| | - Yhu-Chering Huang
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Tzou-Yien Lin
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Che Ma
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Jiandong Huo
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- The Rosalind Franklin Institute, Harwell Campus, Didcot, UK
- Protein Production UK, Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Loic Carrique
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Tomas Malinauskas
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Reinis R Ruza
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Pranav N M Shah
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Tiong Kit Tan
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Pramila Rijal
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
- Centre for Translational Immunology, Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, UK
| | - Robert F Donat
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Kerry Godwin
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Karen R Buttigieg
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Julia A Tree
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Julika Radecke
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Neil G Paterson
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Piyada Supasa
- Nuffield Department of Medicine, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Juthathip Mongkolsapaya
- Nuffield Department of Medicine, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Dengue Hemorrhagic Fever Research Unit, Office for Research and Development, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Gavin R Screaton
- Nuffield Department of Medicine, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Miles W Carroll
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
- Nuffield Department of Medicine, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | | | - Michael L Knight
- William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - William James
- William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Raymond J Owens
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- The Rosalind Franklin Institute, Harwell Campus, Didcot, UK
- Protein Production UK, Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - James H Naismith
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- The Rosalind Franklin Institute, Harwell Campus, Didcot, UK
- Protein Production UK, Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Alain R Townsend
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
- Centre for Translational Immunology, Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, UK
| | - Elizabeth E Fry
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Yuguang Zhao
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Jingshan Ren
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - David I Stuart
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK.
- Centre for Translational Immunology, Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, UK.
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK.
| | - Kuan-Ying A Huang
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan.
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7
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Shah PNM, Filman DJ, Karunatilaka KS, Hesketh EL, Groppelli E, Strauss M, Hogle JM. Cryo-EM structures reveal two distinct conformational states in a picornavirus cell entry intermediate. PLoS Pathog 2020; 16:e1008920. [PMID: 32997730 PMCID: PMC7549760 DOI: 10.1371/journal.ppat.1008920] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 01/17/2020] [Revised: 10/12/2020] [Accepted: 08/21/2020] [Indexed: 12/18/2022] Open
Abstract
The virions of enteroviruses such as poliovirus undergo a global conformational change after binding to the cellular receptor, characterized by a 4% expansion, and by the opening of holes at the two and quasi-three-fold symmetry axes of the capsid. The resultant particle is called a 135S particle or A-particle and is thought to be on the pathway to a productive infection. Previously published studies have concluded that the membrane-interactive peptides, namely VP4 and the N-terminus of VP1, are irreversibly externalized in the 135S particle. However, using established protocols to produce the 135S particle, and single particle cryo-electron microscopy methods, we have identified at least two unique states that we call the early and late 135S particle. Surprisingly, only in the "late" 135S particles have detectable levels of the VP1 N-terminus been trapped outside the capsid. Moreover, we observe a distinct density inside the capsid that can be accounted for by VP4 that remains associated with the genome. Taken together our results conclusively demonstrate that the 135S particle is not a unique conformation, but rather a family of conformations that could exist simultaneously.
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Affiliation(s)
- Pranav N. M. Shah
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, United States of America
| | - David J. Filman
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, United States of America
| | - Krishanthi S. Karunatilaka
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, United States of America
| | - Emma L. Hesketh
- Astbury Centre for Structural Molecular Biology, School of Molecular & Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Elisabetta Groppelli
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Mike Strauss
- Department of Anatomy and Cell Biology, McGill University, Montreal, Canada
| | - James M. Hogle
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, United States of America
- * E-mail:
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8
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Huo J, Zhao Y, Ren J, Zhou D, Duyvesteyn HME, Ginn HM, Carrique L, Malinauskas T, Ruza RR, Shah PNM, Tan TK, Rijal P, Coombes N, Bewley KR, Tree JA, Radecke J, Paterson NG, Supasa P, Mongkolsapaya J, Screaton GR, Carroll M, Townsend A, Fry EE, Owens RJ, Stuart DI. Neutralization of SARS-CoV-2 by Destruction of the Prefusion Spike. Cell Host Microbe 2020; 28:445-454.e6. [PMID: 32585135 PMCID: PMC7303615 DOI: 10.1016/j.chom.2020.06.010] [Citation(s) in RCA: 214] [Impact Index Per Article: 53.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 05/22/2020] [Accepted: 06/12/2020] [Indexed: 12/20/2022]
Abstract
There are as yet no licensed therapeutics for the COVID-19 pandemic. The causal coronavirus (SARS-CoV-2) binds host cells via a trimeric spike whose receptor binding domain (RBD) recognizes angiotensin-converting enzyme 2, initiating conformational changes that drive membrane fusion. We find that the monoclonal antibody CR3022 binds the RBD tightly, neutralizing SARS-CoV-2, and report the crystal structure at 2.4 Å of the Fab/RBD complex. Some crystals are suitable for screening for entry-blocking inhibitors. The highly conserved, structure-stabilizing CR3022 epitope is inaccessible in the prefusion spike, suggesting that CR3022 binding facilitates conversion to the fusion-incompetent post-fusion state. Cryogenic electron microscopy (cryo-EM) analysis confirms that incubation of spike with CR3022 Fab leads to destruction of the prefusion trimer. Presentation of this cryptic epitope in an RBD-based vaccine might advantageously focus immune responses. Binders at this epitope could be useful therapeutically, possibly in synergy with an antibody that blocks receptor attachment.
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MESH Headings
- Allosteric Site
- Amino Acid Sequence
- Angiotensin-Converting Enzyme 2
- Antibodies, Monoclonal/immunology
- Antibodies, Neutralizing/immunology
- Antibodies, Neutralizing/therapeutic use
- Antibodies, Viral/immunology
- Antibodies, Viral/therapeutic use
- Antigen-Antibody Complex/chemistry
- Betacoronavirus/chemistry
- Betacoronavirus/genetics
- Betacoronavirus/immunology
- COVID-19
- COVID-19 Vaccines
- Coronavirus Infections/drug therapy
- Coronavirus Infections/immunology
- Coronavirus Infections/prevention & control
- Coronavirus Infections/therapy
- Coronavirus Infections/virology
- Cryoelectron Microscopy
- Crystallography, X-Ray
- Host Microbial Interactions/immunology
- Humans
- Models, Molecular
- Neutralization Tests
- Pandemics
- Peptidyl-Dipeptidase A/chemistry
- Pneumonia, Viral/immunology
- Pneumonia, Viral/therapy
- Pneumonia, Viral/virology
- Receptors, Virus/chemistry
- SARS-CoV-2
- Spike Glycoprotein, Coronavirus/chemistry
- Spike Glycoprotein, Coronavirus/genetics
- Spike Glycoprotein, Coronavirus/immunology
- Viral Vaccines/immunology
- Viral Vaccines/therapeutic use
- Virus Internalization
- COVID-19 Drug Treatment
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Affiliation(s)
- Jiandong Huo
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, OX3 7BN, UK; The Rosalind Franklin Institute, Harwell Campus, OX11 0FA, UK; Protein Production UK, Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, OX11 0FA, UK
| | - Yuguang Zhao
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, OX3 7BN, UK
| | - Jingshan Ren
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, OX3 7BN, UK.
| | - Daming Zhou
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, OX3 7BN, UK
| | - Helen M E Duyvesteyn
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, OX3 7BN, UK
| | - Helen M Ginn
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, OX11 0DE, UK
| | - Loic Carrique
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, OX3 7BN, UK
| | - Tomas Malinauskas
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, OX3 7BN, UK
| | - Reinis R Ruza
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, OX3 7BN, UK
| | - Pranav N M Shah
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, OX3 7BN, UK
| | - Tiong Kit Tan
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK
| | - Pramila Rijal
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK; Centre for Translational Immunology, Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford OX3 7FZ, UK
| | - Naomi Coombes
- National Infection Service, Public Health England, Porton Down, Salisbury, SP4 0JG, UK
| | - Kevin R Bewley
- National Infection Service, Public Health England, Porton Down, Salisbury, SP4 0JG, UK
| | - Julia A Tree
- National Infection Service, Public Health England, Porton Down, Salisbury, SP4 0JG, UK
| | - Julika Radecke
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, OX11 0DE, UK
| | - Neil G Paterson
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, OX11 0DE, UK
| | - Piyada Supasa
- Nuffield Department of Medicine, Wellcome Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK
| | - Juthathip Mongkolsapaya
- Nuffield Department of Medicine, Wellcome Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK; Dengue Hemorrhagic Fever Research Unit, Office for Research and Development, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 73170, Thailand
| | - Gavin R Screaton
- Nuffield Department of Medicine, Wellcome Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK
| | - Miles Carroll
- National Infection Service, Public Health England, Porton Down, Salisbury, SP4 0JG, UK; Nuffield Department of Medicine, Wellcome Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK
| | - Alain Townsend
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK; Centre for Translational Immunology, Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford OX3 7FZ, UK
| | - Elizabeth E Fry
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, OX3 7BN, UK
| | - Raymond J Owens
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, OX3 7BN, UK; The Rosalind Franklin Institute, Harwell Campus, OX11 0FA, UK; Protein Production UK, Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, OX11 0FA, UK
| | - David I Stuart
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, OX3 7BN, UK; Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, OX11 0DE, UK; Instruct-ERIC, Oxford House, Parkway Court, John Smith Drive, Oxford, OX4 2JY, UK.
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9
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Huo J, Le Bas A, Ruza RR, Duyvesteyn HME, Mikolajek H, Malinauskas T, Tan TK, Rijal P, Dumoux M, Ward PN, Ren J, Zhou D, Harrison PJ, Weckener M, Clare DK, Vogirala VK, Radecke J, Moynié L, Zhao Y, Gilbert-Jaramillo J, Knight ML, Tree JA, Buttigieg KR, Coombes N, Elmore MJ, Carroll MW, Carrique L, Shah PNM, James W, Townsend AR, Stuart DI, Owens RJ, Naismith JH. Neutralizing nanobodies bind SARS-CoV-2 spike RBD and block interaction with ACE2. Nat Struct Mol Biol 2020; 27:846-854. [PMID: 32661423 DOI: 10.1038/s41594-020-0469-6] [Citation(s) in RCA: 353] [Impact Index Per Article: 88.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 06/26/2020] [Indexed: 12/28/2022]
Abstract
The SARS-CoV-2 virus is more transmissible than previous coronaviruses and causes a more serious illness than influenza. The SARS-CoV-2 receptor binding domain (RBD) of the spike protein binds to the human angiotensin-converting enzyme 2 (ACE2) receptor as a prelude to viral entry into the cell. Using a naive llama single-domain antibody library and PCR-based maturation, we have produced two closely related nanobodies, H11-D4 and H11-H4, that bind RBD (KD of 39 and 12 nM, respectively) and block its interaction with ACE2. Single-particle cryo-EM revealed that both nanobodies bind to all three RBDs in the spike trimer. Crystal structures of each nanobody-RBD complex revealed how both nanobodies recognize the same epitope, which partly overlaps with the ACE2 binding surface, explaining the blocking of the RBD-ACE2 interaction. Nanobody-Fc fusions showed neutralizing activity against SARS-CoV-2 (4-6 nM for H11-H4, 18 nM for H11-D4) and additive neutralization with the SARS-CoV-1/2 antibody CR3022.
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MESH Headings
- Amino Acid Sequence
- Angiotensin-Converting Enzyme 2
- Antibodies, Neutralizing/immunology
- Antibodies, Neutralizing/metabolism
- Antibodies, Neutralizing/ultrastructure
- Antibodies, Viral/immunology
- Antibodies, Viral/metabolism
- Antibodies, Viral/ultrastructure
- Antibody Affinity
- Antigen-Antibody Reactions/immunology
- Betacoronavirus/immunology
- Betacoronavirus/metabolism
- Binding, Competitive
- COVID-19
- Coronavirus Infections
- Cryoelectron Microscopy
- Crystallography, X-Ray
- Epitopes/immunology
- Humans
- Immunoglobulin Fc Fragments/genetics
- Immunoglobulin Fc Fragments/immunology
- Models, Molecular
- Pandemics
- Peptide Library
- Peptidyl-Dipeptidase A/metabolism
- Peptidyl-Dipeptidase A/ultrastructure
- Pneumonia, Viral
- Protein Binding
- Protein Conformation
- Receptors, Virus/metabolism
- Receptors, Virus/ultrastructure
- Recombinant Fusion Proteins/immunology
- Recombinant Fusion Proteins/metabolism
- SARS-CoV-2
- Sequence Homology, Amino Acid
- Single-Domain Antibodies/immunology
- Single-Domain Antibodies/metabolism
- Single-Domain Antibodies/ultrastructure
- Spike Glycoprotein, Coronavirus/immunology
- Spike Glycoprotein, Coronavirus/metabolism
- Spike Glycoprotein, Coronavirus/ultrastructure
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Affiliation(s)
- Jiandong Huo
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Audrey Le Bas
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Reinis R Ruza
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Helen M E Duyvesteyn
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Halina Mikolajek
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Tomas Malinauskas
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Tiong Kit Tan
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Pramila Rijal
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
- Centre for Translational Immunology, Chinse Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, UK
| | - Maud Dumoux
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK
| | - Philip N Ward
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Jingshan Ren
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Daming Zhou
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Peter J Harrison
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Miriam Weckener
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK
| | - Daniel K Clare
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Vinod K Vogirala
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Julika Radecke
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Lucile Moynié
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK
| | - Yuguang Zhao
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | | | - Michael L Knight
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Julia A Tree
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Karen R Buttigieg
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Naomi Coombes
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Michael J Elmore
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Miles W Carroll
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Loic Carrique
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Pranav N M Shah
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - William James
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Alain R Townsend
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
- Centre for Translational Immunology, Chinse Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, UK
| | - David I Stuart
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Raymond J Owens
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK.
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK.
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK.
| | - James H Naismith
- Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, UK.
- Division of Structural Biology, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK.
- Protein Production UK, The Rosalind Franklin Institute - Diamond Light Source, The Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK.
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10
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Fratini M, Wiegand T, Funaya C, Jiang Z, Shah PNM, Spatz JP, Cavalcanti-Adam EA, Boulant S. Surface Immobilization of Viruses and Nanoparticles Elucidates Early Events in Clathrin-Mediated Endocytosis. ACS Infect Dis 2018; 4:1585-1600. [PMID: 30200751 DOI: 10.1021/acsinfecdis.8b00134] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Clathrin-mediated endocytosis (CME) is an important entry pathway for viruses. Here, we applied click chemistry to covalently immobilize reovirus on surfaces to study CME during early host-pathogen interactions. To uncouple chemical and physical properties of viruses and determine their impact on CME initiation, we used the same strategy to covalently immobilize nanoparticles of different sizes. Using fluorescence live microscopy and electron microscopy, we confirmed that clathrin recruitment depends on particle size and discovered that the maturation into clathrin-coated vesicles (CCVs) is independent from cargo internalization. Surprisingly, we found that the final size of CCVs appears to be imprinted on the clathrin coat at early stages of cargo-cell interactions. Our approach has allowed us to unravel novel aspects of early interactions between viruses and the clathrin machinery that influence late stages of CME and CCVs formation. This method can be easily and broadly applied to the field of nanotechnology, endocytosis, and virology.
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Affiliation(s)
- Marta Fratini
- Heidelberg University, Department of Infectious Diseases, Virology and German Cancer Research Center, Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
- Max Planck Institute for Medical Research, Department of Cellular Biophysics, Jahnstrasse 29, 69120 Heidelberg, Germany
- Heidelberg University, Institute of Physical Chemistry, Department of Biophysical Chemistry, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany
| | - Tina Wiegand
- Max Planck Institute for Medical Research, Department of Cellular Biophysics, Jahnstrasse 29, 69120 Heidelberg, Germany
- Heidelberg University, Institute of Physical Chemistry, Department of Biophysical Chemistry, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany
| | - Charlotta Funaya
- Heidelberg University, Electron Microscopy Core Facility, Im Neuenheimer Feld 345, 69120 Heidelberg, Germany
| | - Zhongxiang Jiang
- Leica Microsystems GmbH, Am Friedensplatz 3, 68165 Mannheim, Germany
| | - Pranav N. M. Shah
- Heidelberg University, Department of Infectious Diseases, Virology and German Cancer Research Center, Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
| | - Joachim P. Spatz
- Max Planck Institute for Medical Research, Department of Cellular Biophysics, Jahnstrasse 29, 69120 Heidelberg, Germany
- Heidelberg University, Institute of Physical Chemistry, Department of Biophysical Chemistry, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany
| | - Elisabetta Ada Cavalcanti-Adam
- Max Planck Institute for Medical Research, Department of Cellular Biophysics, Jahnstrasse 29, 69120 Heidelberg, Germany
- Heidelberg University, Institute of Physical Chemistry, Department of Biophysical Chemistry, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany
| | - Steeve Boulant
- Heidelberg University, Department of Infectious Diseases, Virology and German Cancer Research Center, Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
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11
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Shah PNM, Stanifer ML, Höhn K, Engel U, Haselmann U, Bartenschlager R, Kräusslich HG, Krijnse-Locker J, Boulant S. Genome packaging of reovirus is mediated by the scaffolding property of the microtubule network. Cell Microbiol 2017; 19. [PMID: 28672089 DOI: 10.1111/cmi.12765] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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: 05/07/2017] [Revised: 06/19/2017] [Accepted: 06/28/2017] [Indexed: 12/12/2022]
Abstract
Reovirus replication occurs in the cytoplasm of the host cell, in virally induced mini-organelles called virus factories. On the basis of the serotype of the virus, the virus factories can manifest as filamentous (type 1 Lang strain) or globular structures (type 3 Dearing strain). The filamentous factories morphology is dependent on the microtubule cytoskeleton; however, the exact function of the microtubule network in virus replication remains unknown. Using a combination of fluorescent microscopy, electron microscopy, and tomography of high-pressure frozen and freeze-substituted cells, we determined the ultrastructural organisation of reovirus factories. Cells infected with the reovirus microtubule-dependent strain display paracrystalline arrays of progeny virions resulting from their tiered organisation around microtubule filaments. On the contrary, in cells infected with the microtubule-independent strain, progeny virions lacked organisation. Conversely to the microtubule-dependent strain, around half of the viral particles present in these viral factories did not contain genomes (genome-less particles). Complementarily, interference with the microtubule filaments in cells infected with the microtubule-dependent strain resulted in a significant increase of genome-less particle number. This decrease of genome packaging efficiency could be rescued by rerouting viral factories on the actin cytoskeleton. These findings demonstrate that the scaffolding properties of the microtubule, and not biochemical nature of tubulin, are critical determinants for reovirus efficient genome packaging. This work establishes, for the first time, a functional correlation between ultrastructural organisation of reovirus factories with genome packaging efficiency and provides novel information on how viruses coordinate assembly of progeny particles.
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Affiliation(s)
- Pranav N M Shah
- Department of Infectious Diseases, Virology, Heidelberg University Hospital, Heidelberg, Germany.,Schaller Research Group at CellNetworks and DKFZ, Heidelberg, Germany
| | - Megan L Stanifer
- Department of Infectious Diseases, Virology, Heidelberg University Hospital, Heidelberg, Germany.,Schaller Research Group at CellNetworks and DKFZ, Heidelberg, Germany
| | - Katharina Höhn
- Department of Infectious Diseases, Virology, Heidelberg University Hospital, Heidelberg, Germany
| | - Ulrike Engel
- Nikon Imaging Center, Heidelberg University, Heidelberg, Germany
| | - Uta Haselmann
- Department of Infectious Diseases, Molecular Virology, Heidelberg University Hospital, Germany
| | - Ralf Bartenschlager
- Department of Infectious Diseases, Molecular Virology, Heidelberg University Hospital, Germany
| | - Hans-Georg Kräusslich
- Department of Infectious Diseases, Virology, Heidelberg University Hospital, Heidelberg, Germany
| | - Jacomine Krijnse-Locker
- Department of Infectious Diseases, Virology, Heidelberg University Hospital, Heidelberg, Germany.,Ultrapole, Ultrastructural Bio-imaging, Center for Innovation and Technological Research, Institut Pasteur, Paris, France
| | - Steeve Boulant
- Department of Infectious Diseases, Virology, Heidelberg University Hospital, Heidelberg, Germany.,Schaller Research Group at CellNetworks and DKFZ, Heidelberg, Germany
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