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Title: Broadly neutralizing anti-S2 antibodies protect against all three human betacoronaviruses that cause deadly disease

Journal Article · · Immunity
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  1. The Scripps Research Inst., La Jolla, CA (United States)
  2. Univ. of North Carolina, Chapel Hill, NC (United States)
  3. Univ. of California, San Diego, CA (United States)
  4. Johns Hopkins Univ., Baltimore, MD (United States)
  5. The Scripps Research Inst., La Jolla, CA (United States); Univ. of California, San Diego, CA (United States)
  6. The Scripps Research Inst., La Jolla, CA (United States); Harvard Univ., Cambridge, MA (United States)

Pan-betacoronavirus neutralizing antibodies may hold the key to developing broadly protective vaccines against novel pandemic coronaviruses and to more effectively respond to SARS-CoV-2 variants. The emergence of Omicron and subvariants of SARS-CoV-2 illustrates the limitations of solely targeting the receptor-binding domain (RBD) of the spike (S) protein. Here, we isolated a large panel of broadly neutralizing antibodies (bnAbs) from SARS-CoV-2 recovered-vaccinated donors, which targets a conserved S2 region in the betacoronavirus spike fusion machinery. Select bnAbs showed broad in vivo protection against all three deadly betacoronaviruses, SARS-CoV-1, SARS-CoV-2, and MERS-CoV, which have spilled over into humans in the past two decades. Structural studies of these bnAbs delineated the molecular basis for their broad reactivity and revealed common antibody features targetable by broad vaccination strategies. These bnAbs provide new insights and opportunities for antibody-based interventions and for developing pan-betacoronavirus vaccines.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
Sponsoring Organization:
National Institute of General Medical Sciences (NIGMS); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-06CH11357; AC02-76SF00515
OSTI ID:
2423303
Journal Information:
Immunity, Journal Name: Immunity Journal Issue: 3 Vol. 56; ISSN 1074-7613
Publisher:
Cell PressCopyright Statement
Country of Publication:
United States
Language:
English

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