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44 items found (0 items not approved), displaying 1 to 10.[First/Prev] 1, 2, 3, 4, 5 [Next/Last]

Instruments / Technical Area	Publication Details	Published
I03-Macromolecular Crystallography	Antibody evasion by the P.1 strain of SARS-CoV-2 Wanwisa Dejnirattisai , Daming Zhou , Piyada Supasa , Chang Liu , Alexander J. Mentzer , Helen M. Ginn , Yuguang Zhao , Helen M. E. Duyvesteyn , Aekkachai Tuekprakhon , Rungtiwa Nutalai , Beibei Wang , Guido Paesen , César López-Camacho , Jose Slon-Campos , Thomas S. Walter , Donal Skelly , Sue Ann Costa Clemens , Felipe Gomes Naveca , Valdinete Nascimento , Fernanda Nascimento , Cristiano Fernandes Da Costa , Paola C. Resende , Alex Pauvolid-Correa , Marilda M. Siqueira , Christina Dold , Robert Levin , Tao Dong , Andrew J. Pollard , Julian C. Knight , Derrick Crook , Teresa Lambe , Elizabeth Clutterbuck , Sagida Bibi , Amy Flaxman , Mustapha Bittaye , Sandra Belij-Rammerstorfer , Sarah Gilbert , Miles W. Carroll , Paul Klenerman , Eleanor Barnes , Susanna J. Dunachie , Neil G. Paterson , Mark A. Williams , David R. Hall , Ruben J. G. Hulswit , Thomas A. Bowden , Elizabeth E. Fry , Juthathip Mongkolsapaya , Jingshan Ren , David I. Stuart , Gavin R. Screaton Cell DOI: 10.1016/j.cell.2021.03.055 Diamond Proposal Number(s): [27009] Open Access Show Abstract ▼ Abstract: Terminating the SARS-CoV-2 pandemic relies upon pan-global vaccination. Current vaccines elicit neutralizing antibody responses to the virus spike derived from early isolates. However, new strains have emerged with multiple mutations: P.1 from Brazil, B.1.351 from South Africa and B.1.1.7 from the UK (12, 10 and 9 changes in the spike respectively). All have mutations in the ACE2 binding site with P.1 and B.1.351 having a virtually identical triplet: E484K, K417N/T and N501Y, which we show confer similar increased affinity for ACE2. We show that, surprisingly, P.1 is significantly less resistant to naturally acquired or vaccine induced antibody responses than B.1.351 suggesting that changes outside the RBD impact neutralisation. Monoclonal antibody 222 neutralises all three variants despite interacting with two of the ACE2 binding site mutations, we explain this through structural analysis and use the 222 light chain to largely restore neutralization potency to a major class of public antibodies.	Mar 2021
I03-Macromolecular Crystallography	Reduced neutralization of SARS-CoV-2 B.1.1.7 variant by convalescent and vaccine sera Piyada Supasa , Daming Zhou , Wanwisa Dejnirattisai , Chang Liu , Alexander J. Mentzer , Helen M. Ginn , Yuguang Zhao , Helen M. E. Duyvesteyn , Rungtiwa Nutalai , Aekkachai Tuekprakhon , Beibei Wang , Guido Paesen , Jose Slon-Campos , César López-Camacho , Bassam Hallis , Naomi Coombes , Kevin Bewley , Sue Charlton , Thomas S. Walter , Eleanor Barnes , Susanna J. Dunachie , Donal Skelly , Sheila F. Lumley , Natalie Baker , Imam Shaik , Holly Humphries , Kerry Godwin , Nick Gent , Alex Sienkiewicz , Christina Dold , Robert Levin , Tao Dong , Andrew J. Pollard , Julian C. Knight , Paul Klenerman , Derrick Crook , Teresa Lambe , Elizabeth Clutterbuck , Sagida Bibi , Amy Flaxman , Mustapha Bittaye , Sandra Belij-Rammerstorfer , Sarah Gilbert , Dave R. Hall , Mark Williams , Neil G. Paterson , William James , Miles W. Carroll , Elizabeth E. Fry , Juthathip Mongkolsapaya , Jingshan Ren , David I. Stuart , Gavin R. Screaton Cell DOI: 10.1016/j.cell.2021.02.033 Diamond Proposal Number(s): [27009] Open Access Show Abstract ▼ Abstract: SARS-CoV-2 has caused over 2M deaths in little over a year. Vaccines are being deployed at scale, aiming to generate responses against the virus spike. The scale of the pandemic and error-prone virus replication is leading to the appearance of mutant viruses and potentially escape from antibody responses. Variant B.1.1.7, now dominant in the UK, with increased transmission, harbours 9 amino-acid changes in the spike, including N501Y in the ACE2 interacting-surface. We examine the ability of B.1.1.7 to evade antibody responses elicited by natural SARS-CoV-2 infection or vaccination. We map the impact of N501Y by structure/function analysis of a large panel of well-characterised monoclonal antibodies. B.1.1.7 is harder to neutralize than parental virus, compromising neutralization by some members of a major class of public antibodies through light chain contacts with residue 501. However, widespread escape from monoclonal antibodies or antibody responses generated by natural infection or vaccination was not observed.	Feb 2021
I03-Macromolecular Crystallography	Evidence of escape of SARS-CoV-2 variant B.1.351 from natural and vaccine induced sera Daming Zhou , Wanwisa Dejnirattisai , Piyada Supasa , Chang Liu , Alexander J. Mentzer , Helen M. Ginn , Yuguang Zhao , Helen M. E. Duyvesteyn , Aekkachai Tuekprakhon , Rungtiwa Nutalai , Beibei Wang , Guido C. Paesen , Cesar Lopez-Camacho , Jose Slon-Campos , Bassam Hallis , Naomi Coombes , Kevin Bewley , Sue Charlton , Thomas S. Walter , Donal Skelly , Sheila F. Lumley , Christina Dold , Robert Levin , Tao Dong , Andrew J. Pollard , Julian C. Knight , Derrick Crook , Teresa Lambe , Elizabeth Clutterbuck , Sagida Bibi , Amy Flaxman , Mustapha Bittaye , Sandra Belij-Rammerstorfer , Sarah Gilbert , William James , Miles W. Carroll , Paul Klenerman , Eleanor Barnes , Susanna J. Dunachie , Elizabeth E. Fry , Juthathip Mongkolspaya , Jingshan Ren , David I. Stuart , Gavin R. Screaton Cell DOI: 10.1016/j.cell.2021.02.037 Diamond Proposal Number(s): [27009] Open Access Show Abstract ▼ Abstract: The race to produce vaccines against SARS-CoV-2 began when the first sequence was published, and this forms the basis for vaccines currently deployed globally. Independent lineages of SARS-CoV-2 have recently been reported: UK–B.1.1.7, South Africa–B.1.351 and Brazil–P.1. These variants have multiple changes in the immunodominant spike protein which facilitates viral cell entry via the Angiotensin converting enzyme-2 (ACE2) receptor. Mutations in the receptor recognition site on the spike are of great concern for their potential for immune escape. Here we describe a structure-function analysis of B.1.351 using a large cohort of convalescent and vaccinee serum samples. The receptor binding domain mutations provide tighter ACE2 binding and widespread escape from monoclonal antibody neutralization largely driven by E484K although K417N and N501Y act together against some important antibody classes. In a number of cases it would appear that convalescent and some vaccine serum offers limited protection against this variant.	Feb 2021
I03-Macromolecular Crystallography Krios I-Titan Krios I at Diamond	The antigenic anatomy of SARS-CoV-2 receptor binding domain Wanwisa Dejnirattisai , Daming Zhou , Helen M. Ginn , Helen M. E. Duyvesteyn , Piyada Supasa , James Brett Case , Yuguang Zhao , Thomas Walter , Alexander J. Mentzer , Chang Liu , Beibei Wang , Guido C. Paesen , Jose Slon-Campos , César López-Camacho , Natasha M. Kafai , Adam L. Bailey , Rita E. Chen , Baoling Ying , Craig Thompson , Jai Bolton , Alex Fyfe , Sunetra Gupta , Tiong Kit Tan , Javier Gilbert-Jaramillo , William James , Michael Knight , Miles W. Carroll , Donal Skelly , Christina Dold , Yanchun Peng , Robert Levin , Tao Dong , Andrew J. Pollard , Julian C. Knight , Paul Klenerman , Nigel Temperton , David R. Hall , Mark A. Williams , Neil G. Paterson , Felicity Bertram , C. Alistair Siebert , Daniel K. Clare , Andrew Howe , Julika Radecke , Yun Song , Alain R. Townsend , Kuan-Ying A. Huang , Elizabeth E. Fry , Juthathip Mongkolsapaya , Michael S. Diamond , Jingshan Ren , David I. Stuart , Gavin R. Screaton Cell DOI: 10.1016/j.cell.2021.02.032 Diamond Proposal Number(s): [27009, 26983] Open Access Show Abstract ▼ Abstract: Antibodies are crucial to immune protection against SARS-CoV-2, with some in emergency use as therapeutics. Here we identify 377 human monoclonal antibodies (mAbs) recognizing the virus spike, and focus mainly on 80 that bind the receptor binding domain (RBD). We devise a competition data driven method to map RBD binding sites. We find that although antibody binding sites are widely dispersed, neutralizing antibody binding is focused, with nearly all highly inhibitory mAbs (IC50<0.1μg/ml) blocking receptor interaction, except for one that binds a unique epitope in the N-terminal domain. Many of these neutralizing mAbs use public V-genes and are close to germline. We dissect the structural basis of recognition for this large panel of antibodies through X-ray crystallography and cryo-electron microscopy of 19 Fab-antigen structures. We find novel binding modes for some potently inhibitory antibodies and demonstrate that strongly neutralizing mAbs protect, prophylactically or therapeutically, in animal models.	Feb 2021
	Mammalian expression of virus-like particles as a proof of principle for next generation polio vaccines Mohammad W. Bahar , Claudine Porta , Helen Fox , Andrew J. Macadam , Elizabeth E. Fry , David I. Stuart Npj Vaccines 6 DOI: 10.1038/s41541-020-00267-3 Open Access Show Abstract ▼ Abstract: Global vaccination programs using live-attenuated oral and inactivated polio vaccine (OPV and IPV) have almost eradicated poliovirus (PV) but these vaccines or their production pose significant risk in a polio-free world. Recombinant PV virus-like particles (VLPs), lacking the viral genome, represent safe next-generation vaccines, however their production requires optimisation. Here we present an efficient mammalian expression strategy producing good yields of wild-type PV VLPs for all three serotypes and a thermostabilised variant for PV3. Whilst the wild-type VLPs were predominantly in the non-native C-antigenic form, the thermostabilised PV3 VLPs adopted the native D-antigenic conformation eliciting neutralising antibody titres equivalent to the current IPV and were indistinguishable from natural empty particles by cryo-electron microscopy with a similar stabilising lipidic pocket-factor in the VP1 β-barrel. This factor may not be available in alternative expression systems, which may require synthetic pocket-binding factors. VLPs equivalent to these mammalian expressed thermostabilized particles, represent safer non-infectious vaccine candidates for the post-eradication era.	Jan 2021
I03-Macromolecular Crystallography	Structural and functional analysis of protective antibodies targeting the threefold plateau of enterovirus 71 Kuan-Ying A. Huang , Daming Zhou , Elizabeth E. Fry , Abhay Kotecha , Peng-Nien Huang , Shu-Li Yang , Kuo-Chien Tsao , Yhu-Chering Huang , Tzou-Yien Lin , Jingshan Ren , David I. Stuart Nature Communications 11 DOI: 10.1038/s41467-020-19013-3 Diamond Proposal Number(s): [10627] Open Access Show Abstract ▼ Abstract: Enterovirus 71 (EV71)-neutralizing antibodies correlate with protection and have potential as therapeutic agents. We isolate and characterize a panel of plasmablast-derived monoclonal antibodies from an infected child whose antibody response focuses on the plateau epitope near the icosahedral 3-fold axes. Eight of a total of 19 antibodies target this epitope and three of these potently neutralize the virus. Representative neutralizing antibodies 38-1-10A and 38-3-11A both confer effective protection against lethal EV71 challenge in hSCARB2-transgenic mice. The cryo-electron microscopy structures of the EV71 virion in complex with Fab fragments of these potent and protective antibodies reveal the details of a conserved epitope formed by residues in the BC and HI loops of VP2 and the BC and HI loops of VP3 spanning the region around the 3-fold axis. Remarkably, the two antibodies interact with the epitope in quite distinct ways. These plateau-binding antibodies provide templates for promising candidate therapeutics.	Oct 2020
I03-Macromolecular Crystallography Krios I-Titan Krios I at Diamond	Structural basis for the neutralization of SARS-CoV-2 by an antibody from a convalescent patient Daming Zhou , Helen M. E. Duyvesteyn , Cheng-pin Chen , Chung-guei Huang , Ting-hua Chen , Shin-ru Shih , Yi-chun Lin , Chien-yu Cheng , Shu-hsing Cheng , Yhu-chering Huang , Tzou-yien Lin , Che Ma , Jiandong Huo , Loic Carrique , Tomas Malinauskas , Reinis R. Ruza , Pranav Shah , Tiong Kit Tan , Pramila Rijal , Robert F. Donat , Kerry Godwin , Karen R. Buttigieg , Julia A. Tree , Julika Radecke , Neil Paterson , Piyada Supasa , Juthathip Mongkolsapaya , Gavin R. Screaton , Miles W. Carroll , Javier Gilbert-jaramillo , Michael L. Knight , William James , Raymond J. Owens , James H. Naismith , Alain R. Townsend , Elizabeth E. Fry , Yuguang Zhao , Jingshan Ren , David I. Stuart , Kuan-ying A. Huang Nature Structural & Molecular Biology 20 DOI: 10.1038/s41594-020-0480-y Diamond Proposal Number(s): [19946, 26983] Show Abstract ▼ 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.	Jul 2020
I03-Macromolecular Crystallography Krios I-Titan Krios I at Diamond	Neutralisation of SARS-CoV-2 by destruction of the prefusion Spike Jiandong Huo , Yuguang Zhao , Jingshan Ren , Daming Zhou , Helen M. E. Duyvesteyn , Helen M. Ginn , Loic Carrique , Tomas Malinauskas , Reinis R. Ruza , Pranav N. M. Shah , Tiong Kit Tan , Pramila Rijal , Naomi Coombes , Kevin R. Bewley , Julia A. Tree , Julika Radecke , Neil Paterson , Piyasa Supasa , Juthathip Mongkolsapaya , Gavin R. Screaton , Miles Carroll , Alain Townsend , Elizabeth E. Fry , Raymond J. Owens , David I. Stuart Cell Host & Microbe DOI: 10.1016/j.chom.2020.06.010 Diamond Proposal Number(s): [19946, 26983] Open Access Show Abstract ▼ Abstract: There are as yet no licenced therapeutics for the COVID-19 pandemic. The causal coronavirus (SARS-CoV-2) binds host cells via a trimeric Spike whose receptor binding domain (RBD) recognises angiotensin-converting enzyme 2 (ACE2), initiating conformational changes that drive membrane fusion. We find that the monoclonal antibody CR3022 binds the RBD tightly, neutralising 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-stabilising, CR3022 epitope is inaccessible in the prefusion Spike, suggesting that CR3022 binding facilitates conversion to the fusion-incompetent post-fusion state. 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 may be useful therapeutically, possibly in synergy with an antibody blocking receptor attachment.	Jun 2020
I03-Macromolecular Crystallography	Glutathione facilitates enterovirus assembly by binding at a druggable pocket Helen M. E. Duyvesteyn , Jingshan Ren , Thomas S. Walter , Elizabeth E. Fry , David I. Stuart Communications Biology 3 DOI: 10.1038/s42003-019-0722-x Diamond Proposal Number(s): [19946] Open Access Show Abstract ▼ Abstract: Enteroviruses cause a range of human and animal diseases, some life-threatening, but there remain no licenced anti-enterovirus drugs. However, a benzene-sulfonamide derivative and related compounds have been shown recently to block infection of a range of enteroviruses by binding the capsid at a positively-charged surface depression conserved across many enteroviruses. It has also been established that glutathione is essential for the assembly of many enteroviruses, interacting with the capsid proteins to facilitate the formation of the pentameric assembly intermediate, although the mechanism is unknown. Here we show, by high resolution structure analyses of enterovirus F3, that reduced glutathione binds to the same interprotomer pocket as the benzene-sulfonamide derivative. Bound glutathione makes strong interactions with adjacent protomers, thereby explaining the underlying biological role of this druggable binding pocket and delineating the pharmacophore for potential antivirals.	Jan 2020
	Hand-foot-and-mouth disease virus receptor KREMEN1 binds the canyon of Coxsackie Virus A10 Yuguang Zhao , Daming Zhou , Tao Ni , Dimple Karia , Abhay Kotecha , Xiangxi Wang , Zihe Rao , E. Yvonne Jones , Elizabeth E. Fry , Jingshan Ren , David I. Stuart Nature Communications 11 DOI: 10.1038/s41467-019-13936-2 Open Access Show Abstract ▼ Abstract: Coxsackievirus A10 (CV-A10) is responsible for an escalating number of severe infections in children, but no prophylactics or therapeutics are currently available. KREMEN1 (KRM1) is the entry receptor for the largest receptor-group of hand-foot-and-mouth disease causing viruses, which includes CV-A10. We report here structures of CV-A10 mature virus alone and in complex with KRM1 as well as of the CV-A10 A-particle. The receptor spans the viral canyon with a large footprint on the virus surface. The footprint has some overlap with that seen for the neonatal Fc receptor complexed with enterovirus E6 but is larger and distinct from that of another enterovirus receptor SCARB2. Reduced occupancy of a particle-stabilising pocket factor in the complexed virus and the presence of both unbound and expanded virus particles suggests receptor binding initiates a cascade of conformational changes that produces expanded particles primed for viral uncoating.	Jan 2020

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