Cited by 146interferon and immune responsesSARS-CoV-2 and COVID-19 ResearchAnimal Virus Infections Studies

SARS-CoV-2 Is Restricted by Zinc Finger Antiviral Protein despite Preadaptation to the Low-CpG Environment in Humans

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Nchioua, Rayhane, Kmiec, Dorota, Müller, Janis A., Conzelmann, Carina, Groß, Rüdiger, Swanson, Chad M., Neil, Stuart J. D., Stenger, Steffen +4 more·2020·mBio

Published version of a preprint

Abstract

Although interferons inhibit SARS-CoV-2 and have been evaluated for treatment of coronavirus disease 2019 (COVID-19), the most effective types and antiviral effectors remain to be defined. Here, we show that IFN-γ is particularly potent in restricting SARS-CoV-2 and in inducing expression of the antiviral factor ZAP in human lung cells. Knockdown experiments revealed that endogenous ZAP significantly restricts SARS-CoV-2. We further show that CpG dinucleotides which are specifically targeted by ZAP are strongly suppressed in the SARS-CoV-2 genome and that the two closest horseshoe bat relatives of SARS-CoV-2 show the lowest genomic CpG content of all coronavirus sequences available from this reservoir host. Nonetheless, both the short and long isoforms of human ZAP reduced SARS-CoV-2 RNA levels, and this activity was conserved in horseshoe bat and pangolin ZAP orthologues. Our findings indicating that type II interferon is particularly efficient against SARS-CoV-2 and that ZAP restricts this pandemic viral pathogen might promote the development of effective immune therapies against COVID-19.

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  • Host zinc finger antiviral proteins (ZAP, gene name ZC3HAV1) target CpG dinucleotides in viral RNA and recruit cellular RNA degradation complexes to degrade the viral RNA genome.

    “This avoidance of CGN codons makes evolutionary sense given that the host zinc finger antiviral proteins (ZAP, gene name ZC3HAV1) target CpG dinucleotides in viral RNA and recruit cellular RNA degradation complexes to degrade the viral RNA genome [27,28,29].”

    From Detailed Dissection and Critical Evaluation of the Pfizer/BioNTech and Moderna mRNA Vaccines (2021) · cites this paper as [29]

    The Introduction says ZAP targets CpG-rich viral RNA, and the Results section on ZAP isoforms says it promotes degradation of CpG-containing viral RNAs. Another Results section notes that ZAP lacks RNase activity and identifies cellular cofactors important for restriction, but our copy does not establish that ZAP recruits RNA-degradation complexes to degrade the viral genome. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

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Authors
Nchioua, R., Kmiec, D., Müller, J. A., Conzelmann, C., Groß, R., Swanson, C. M., Neil, S. J. D., Stenger, S., Sauter, D., Münch, J., Sparrer, K. M. J., & Kirchhoff, F.
Affiliations
  • University Hospital Ulm (DE)
  • Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany
  • King's College London (GB)
Corresponding author
Kirchhoff, Frank
Venue
mBio
Published
2020-10-27
Volume
11
Issue
5
ISSN
  • 2150-7511 (ISSN-L)
  • 2161-2129
OpenAlex
W3093413235
Cited by
146
References
4
Citations by year
2026: 9 · 2025: 9 · 2024: 13 · 2023: 25 · 2022: 32 · 2021: 45 · 2020: 13
FWCI
9.88
Type
journal article
Language
en
Open access
Locations
  • mBio (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Research Portal (King's College London) (publishedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • OPen Access Repositorium der Universität Ulm (OPARU) (Ulm University) (submittedVersion, cc-by)
  • Universität Ulm, Kommunikations- und Informationszentrum (kiz) (cc-by)
Funders
  • Deutsche Forschungsgemeinschaft (CRC-1279, SPP-1923, SP 1600/4-1, KM 5/1-1, SP1600)
  • Bundesministerium für Bildung und Forschung (KM 5/1-1, SPP 1923, SARS-CoV-2, CRC1279, RestrictSARS-CoV2)
  • Universität Ulm (CRC 1279, SP1600)
  • Medical Research Council (MC_PC_14105, MR/S000844/1, MC_PC_15068)
  • International Graduate School in Molecular Medicine Ulm (SARS-CoV-2)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
  • Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Virus Infections Studies
Keywords
SARS-CoV-2, zinc-finger antiviral protein, ZAP, interferon-gamma, CpG, antiviral restriction, horseshoe bats, pangolins, viral genome evolution, COVID-19 pandemic, lung cells, interferon therapy
MeSH terms
Betacoronavirus, COVID-19, SARS-CoV-2, Animals, Cell Line, Humans, Interferons, Phylogeny, Pneumonia, Viral, RNA, Viral, Virus Replication, Gene Expression, RNA-Binding Proteins, Genome, Viral, Coronavirus, Coronavirus Infections, CpG Islands, Protein Isoforms, Pandemics

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

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