Potent cross-reactive antibodies following Omicron breakthrough in vaccinees

OPTIC consortium, ISARIC4C consortium, Rungtiwa Nutalai, Daming Zhou, Aekkachai Tuekprakhon, Helen M. Ginn, Piyada Supasa, Chang Liu, Jiandong Huo, Alexander J. Mentzer, Helen M.E. Duyvesteyn, Aiste Dijokaite-Guraliuc, Donal Skelly, Thomas G. Ritter, Ali Amini, Sagida Bibi, Sandra Adele, Sile Ann Johnson, Bede Constantinides, Hermione WebsterNigel Temperton, Paul Klenerman, Eleanor Barnes, Susanna J. Dunachie, Derrick Crook, Andrew J. Pollard, Teresa Lambe, Philip Goulder, Neil G. Paterson, Mark A. Williams, David R. Hall, Juthathip Mongkolsapaya, Elizabeth E. Fry, Wanwisa Dejnirattisai*, Jingshan Ren*, David I. Stuart*, Gavin R. Screaton*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Highly transmissible Omicron variants of SARS-CoV-2 currently dominate globally. Here, we compare neutralization of Omicron BA.1, BA.1.1, and BA.2. BA.2 RBD has slightly higher ACE2 affinity than BA.1 and slightly reduced neutralization by vaccine serum, possibly associated with its increased transmissibility. Neutralization differences between sub-lineages for mAbs (including therapeutics) mostly arise from variation in residues bordering the ACE2 binding site; however, more distant mutations S371F (BA.2) and R346K (BA.1.1) markedly reduce neutralization by therapeutic antibody Vir-S309. In-depth structure-and-function analyses of 27 potent RBD-binding mAbs isolated from vaccinated volunteers following breakthrough Omicron-BA.1 infection reveals that they are focused in two main clusters within the RBD, with potent right-shoulder antibodies showing increased prevalence. Selection and somatic maturation have optimized antibody potency in less-mutated epitopes and recovered potency in highly mutated epitopes. All 27 mAbs potently neutralize early pandemic strains, and many show broad reactivity with variants of concern.
Original languageEnglish
Pages (from-to)2116-2131.e18
Number of pages35
JournalCell
Volume185
Issue number12
Early online date20 May 2022
DOIs
Publication statusPublished - 9 Jun 2022

Bibliographical note

Acknowledgments:
This work was supported by the Chinese Academy of Medical Sciences (CAMS) Innovation Fund for Medical Science (CIFMS), China (grant number: 2018-I2M-2-002) to D.I.S. and G.R.S. We are also grateful for support from Schmidt Futures, the Red Avenue Foundation, and the Oak Foundation. G.R.S. was supported by Wellcome, H.M.E.D. and J.R. by Wellcome (101122/Z/13/Z), D.I.S. and E.E.F. by UKRI MRC (MR/N00065X/1). D.I.S. and G.R.S. are Jenner Investigators. This is a contribution from the UK Instruct-ERIC Center. A.J.M. is an NIHR-supported Academic Clinical Lecturer. Convalescent sampling was supported by the UKRI MRC (MC_PC_19059 awarded to the ISARIC-4C consortium, full contributor list available at https://isaric4c.net/about/authors/) and the National Institutes of Health and Oxford Biomedical Research Centre and an Oxfordshire Health Services Research Committee grant to A.J.M.. The Wellcome Center for Human Genetics is supported by Wellcome (grant 090532/Z/09/Z). Computational aspects were supported by the Wellcome (203141/Z/16/Z) and the NIHR Oxford BRC. SPR measurements were carried out at the Molecular Biophysics facility, University of Oxford. Diamond Light Source provided time on Beamlines I03 and I04 under Proposal lb27009 for COVID-19 Rapid Access. Electron microscopy was conducted at the Oxford Particle Imaging Centre (OPIC), founded by a Wellcome JIF award (060208/Z/00/Z), or COSMIC (Oxford). Computational aspects were supported by the Wellcome Trust Core Award Grant Number 203141/Z/16/Z and the NIHR Oxford BRC.

Oxford Vaccine work was supported by UKRI, Coalition for Epidemic Preparedness Innovations, National Institute for Health Research (NIHR), NIHR Oxford Biomedical Research Centre, Thames Valley and South Midland’s NIHR Clinical Research Network. We thank the Oxford Protective T-cell Immunology for COVID-19 (OPTIC) Clinical team (Christopher Conlon, Alexandra Deeks, John Frater, Lisa Frending, Siobhan Gardiner, Anni Jämsén, Katie Jeffery, Tom Malone, Eloise Phillips, Lucy Rothwell, Lizzie Stafford) for participant sample collection and the Oxford Immunology Network Covid-19 Response T cell Consortium for laboratory support. We acknowledge rapid sharing of Victoria, B.1.1.7, and B.1.351 isolated by scientists in the National Infection Service at PHE Porton Down, and B.1.617.2 virus was kindly provided by Wendy Barclay and Thushan De-Silva. We thank The Secretariat of National Surveillance, Ministry of Health Brazil for assistance in obtaining P.1 samples. This work was supported by the UK Department of Health and Social Care (DHSC) as part of the PITCH (Protective Immunity from T cells to Covid-19 in Health workers) Consortium, the UK Coronavirus Immunology Consortium (UK-CIC), and the Huo Family Foundation. E.B. and P.K. are NIHR Senior Investigators, and P.K. is funded by WT109965MA and NIH (U19 I082360). S.J.D. is funded by an NIHR Global Research Professorship (NIHR300791). D.S. is an NIHR Academic Clinical Fellow. The views expressed in this article are those of the authors and not necessarily those of the National Health Service (NHS), the DHSC, the National NIHR, the MRC, or Public Health, England.

Keywords

  • SARS-CoV-2
  • COVID-19
  • Omicron
  • BA.1
  • BA.1.1
  • BA.2
  • antibody responses
  • crystallography
  • variants of concern
  • receptor binding domain
  • neutralization
  • immune escape

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