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Accès ouvert déclaré 2022 article

SARS-CoV-2 Omicron is an immune escape variant with an altered cell entry pathway

735Citations signalées — pas une note de qualité
102Institutions déclarées
1Pays d’affiliation déclarés

Résumé fourni par la source

Vaccines based on the spike protein of SARS-CoV-2 are a cornerstone of the public health response to COVID-19. The emergence of hypermutated, increasingly transmissible variants of concern (VOCs) threaten this strategy. Omicron (B.1.1.529), the fifth VOC to be described, harbours multiple amino acid mutations in spike, half of which lie within the receptor-binding domain. Here we demonstrate substantial evasion of neutralization by Omicron BA.1 and BA.2 variants in vitro using sera from individuals vaccinated with ChAdOx1, BNT162b2 and mRNA-1273. These data were mirrored by a substantial reduction in real-world vaccine effectiveness that was partially restored by booster vaccination. The Omicron variants BA.1 and BA.2 did not induce cell syncytia in vitro and favoured a TMPRSS2-independent endosomal entry pathway, these phenotypes mapping to distinct regions of the spike protein. Impaired cell fusion was determined by the receptor-binding domain, while endosomal entry mapped to the S2 domain. Such marked changes in antigenicity and replicative biology may underlie the rapid global spread and altered pathogenicity of the Omicron variant.

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Contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
SARS-CoV-2 Omicron is an immune escape variant with an altered cell entry pathway
Date Crossref
07/07/2022
Éditeur
Springer Science and Business Media LLC
Type
journal-article

Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude et ne compte pas comme une seconde source scientifique indépendante.

Institutions déclarées

MRC University of Glasgow Centre for Virus ResearchUniversity of GlasgowNHS Greater Glasgow and ClydeUniversity of CambridgeMRC Biostatistics UnitPublic Health ScotlandUniversity of St AndrewsNHS LothianUniversity of OxfordJohn Radcliffe HospitalMedawar Building for Pathogen ResearchOxford BioMedica (United Kingdom)Sheffield Teaching Hospitals NHS Foundation TrustUniversity of SheffieldUniversity of LiverpoolLiverpool School of Tropical MedicineAintree University Hospitals NHS Foundation TrustHealth Protection Research Unit in Emerging and Zoonotic Infections at University of LiverpoolUniversity Hospitals Birmingham NHS Foundation TrustUniversity of BirminghamNewcastle upon Tyne Hospitals NHS Foundation TrustNewcastle UniversityBarking, Havering And Redbridge University Hospitals NHS TrustBarts Health NHS TrustBelfast Health and Social Care TrustBetsi Cadwaladr University Health BoardOpen Data InstituteBlackpool Teaching Hospitals NHS Foundation TrustBournemouth UniversityWellcome/MRC Cambridge Stem Cell InstituteCambridge University Hospitals NHS Foundation TrustCardiff and Vale University Health BoardCardiff UniversityGuy's and St Thomas' NHS Foundation TrustUniversity of PortsmouthNottingham University Hospitals NHS TrustQueen's Medical CentreUniversity Hospitals of Leicester NHS TrustCounty Durham and Darlington NHS Foundation TrustUniversity of NottinghamPublic Health WalesKettering General HospitalNorth West London PathologyEast Kent Hospitals University NHS Foundation TrustUniversity College London Hospitals NHS Foundation TrustUniversity College LondonEast Suffolk and North Essex NHS Foundation TrustEast Sussex Healthcare NHS TrustGateshead Health NHS Foundation TrustGreat Ormond Street Hospital for Children NHS Foundation TrustGreat Ormond Street HospitalHampshire Hospitals NHS Foundation TrustHeartlands HospitalNorthumbria UniversityUniversity of HullImperial College Healthcare NHS TrustUniversity Hospitals Sussex NHS Foundation TrustImperial College LondonSt George’s University Hospitals NHS Foundation TrustSt George's, University of LondonIsle of Wight NHS TrustKing's College Hospital NHS Foundation TrustKing's College LondonMaidstone and Tunbridge Wells NHS TrustManchester University NHS Foundation TrustBuckinghamshire Healthcare NHS TrustRoyal Oldham HospitalLondon School of Hygiene & Tropical MedicineNorfolk and Norwich University Hospitals NHS Foundation TrustNorfolk County CouncilNorth Cumbria Integrated Care NHS Foundation TrustNorth Middlesex University Hospital NHS TrustNorth Tees and Hartlepool NHS Foundation TrustNorthumbria Healthcare NHS Foundation TrustNorthern Lincolnshire and Goole Hospitals NHS Foundation TrustPortsmouth Hospitals NHS TrustPublic Health AgencyPublic Health EnglandQuadram InstituteQueen Elizabeth Hospital BirminghamQueen's University BelfastHarefield HospitalRoyal Devon & Exeter NHS Foundation TrustRoyal Free London NHS Foundation TrustSouth Tees Hospitals NHS Foundation TrustSwansea UniversityQueen Elizabeth Hospital King's Lynn NHS Foundation TrustRoyal Marsden NHS Foundation TrustThe Royal Wolverhampton NHS TrustUniversity College HospitalUniversity Hospital Southampton NHS Foundation TrustPoole HospitalUniversity Hospitals Dorset NHS Foundation TrustUniversity of BrightonUniversity of East AngliaUniversity of EdinburghUniversity of ExeterUniversity of SouthamptonWatford General HospitalCentre for Human GeneticsWellcome Sanger InstituteWhittington Health NHS Trust

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Sujets associés

SARS-CoV-2 and COVID-19 ResearchCOVID-19 Clinical Research StudiesSARS-CoV-2 detection and testing

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