Cited by 326SARS-CoV-2 and COVID-19 ResearchCOVID-19 Clinical Research StudiesMonoclonal and Polyclonal Antibodies Research

Proinflammatory IgG Fc structures in patients with severe COVID-19

Open access
Chakraborty, Saborni, Gonzalez, Joseph, Edwards, Karlie, Mallajosyula, Vamsee, Buzzanco, Anthony S., Sherwood, Robert, Buffone, Cindy, Kathale, Nimish +19 more·2021·Nature Immunology

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Abstract

Severe acute respiratory syndrome coronavirus 2 infections can cause coronavirus disease 2019 (COVID-19), which manifests with a range of severities from mild illness to life-threatening pneumonia and multi-organ failure. Severe COVID-19 is characterized by an inflammatory signature, including high levels of inflammatory cytokines, alveolar inflammatory infiltrates and vascular microthrombi. Here we show that patients with severe COVID-19 produced a unique serologic signature, including an increased likelihood of IgG1 with afucosylated Fc glycans. This Fc modification on severe acute respiratory syndrome coronavirus 2 IgGs enhanced interactions with the activating Fcγ receptor FcγRIIIa; when incorporated into immune complexes, Fc afucosylation enhanced production of inflammatory cytokines by monocytes, including interleukin-6 and tumor necrosis factor. These results show that disease severity in COVID-19 correlates with the presence of proinflammatory IgG Fc structures, including afucosylated IgG1.

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  • Antibodies that promote inflammation might contribute to cytokine storm and severe disease.

    “On the other hand, antibodies promoting inflammatory responses may contribute to a cytokine storm resulting in severe disease32,33.”
  • The possible role of IgG with reduced Fc fucosylation and stronger FcγRIII binding in severe COVID-19 suggests that vaccine-induced antibody quality may matter for minimizing ADE risk.

    “However, the potential role of IgG with reduced Fc fucosylation and enhanced binding to FcγRIII in the development of severe COVID-19 suggests that the quality of antibodies induced by vaccination may also be important in minimizing the risk of ADE32,33.”

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Authors
Chakraborty, S., Gonzalez, J., Edwards, K., Mallajosyula, V., Buzzanco, A. S., Sherwood, R., Buffone, C., Kathale, N., Providenza, S., Xie, M. M., Andrews, J. R., Blish, C. A., Singh, U., Dugan, H., Wilson, P. C., Pham, T. D., Boyd, S. D., Nadeau, K. C., Pinsky, B. A., Zhang, S., Memoli, M. J., Taubenberger, J. K., Morales, T., Schapiro, J. M., Tan, G. S., Jagannathan, P., & Wang, T. T.
Affiliations
  • Stanford Medicine (US)
  • Stanford University (US)
  • Cornell University (US)
  • Chan Zuckerberg Biohub San Francisco (US)
  • University of Chicago (US)
  • Stanford Blood Center (US)
  • National Institutes of Health (US)
  • Kaiser Permanente Northern California (US)
  • J. Craig Venter Institute (US)
Corresponding author
Wang, Taia T.
Venue
Nature Immunology
Published
2020-11-09
Volume
22
Issue
1
Pages
67-73
ISSN
  • 1529-2908 (ISSN-L)
  • 1529-2916
OpenAlex
W3105885548
Cited by
326
References
41
Citations by year
2026: 25 · 2025: 35 · 2024: 32 · 2023: 41 · 2022: 98 · 2021: 83 · 2020: 12
FWCI
7.63
Type
journal article
Language
en
Open access
Locations
  • Nature Immunology (publishedVersion)
  • medRxiv (acceptedVersion)
  • PubMed (publishedVersion)
  • Pure Amsterdam UMC (acceptedVersion, cc-by)
  • PubMed Central (acceptedVersion)
  • PubMed Central (submittedVersion)
  • ImmPort
Funders
U.S. Department of Health & Human Services | NIH | National Institute of Allergy and Infectious Diseases (R01AI139119, U54CA260517, U19AI111825)
Topics
  • Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
  • Health Sciences › Medicine › Infectious Diseases › COVID-19 Clinical Research Studies
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Monoclonal and Polyclonal Antibodies Research
Keywords
severe COVID-19, SARS-CoV-2, IgG1, Fc glycan, afucosylation, FcγRIIIa, Fcγ receptor binding, immune complexes, monocytes, interleukin-6, TNF-α, hyperinflammation, disease severity

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