Cited by 906SARS-CoV-2 and COVID-19 ResearchCOVID-19 Clinical Research Studiesinterferon and immune responses

SARS-CoV-2 infection of human ACE2-transgenic mice causes severe lung inflammation and impaired function

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Winkler, Emma S., Bailey, Adam L., Kafai, Natasha M., Nair, Sharmila, McCune, Broc T., Yu, Jinsheng, Fox, Julie M., Chen, Rita E. +9 more·2020·Nature Immunology

Abstract

Although animal models have been evaluated for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, none have fully recapitulated the lung disease phenotypes seen in humans who have been hospitalized. Here, we evaluate transgenic mice expressing the human angiotensin I-converting enzyme 2 (ACE2) receptor driven by the cytokeratin-18 (K18) gene promoter (K18-hACE2) as a model of SARS-CoV-2 infection. Intranasal inoculation of SARS-CoV-2 in K18-hACE2 mice results in high levels of viral infection in lungs, with spread to other organs. A decline in pulmonary function occurs 4 days after peak viral titer and correlates with infiltration of monocytes, neutrophils and activated T cells. SARS-CoV-2-infected lung tissues show a massively upregulated innate immune response with signatures of nuclear factor-κB-dependent, type I and II interferon signaling, and leukocyte activation pathways. Thus, the K18-hACE2 model of SARS-CoV-2 infection shares many features of severe COVID-19 infection and can be used to define the basis of lung disease and test immune and antiviral-based countermeasures.

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  • In a humanized transgenic mouse model, ACE2 was expressed in the heart and virus replication detected, but they did not observe cardiac inflammation.

    “In a humanized transgenic mouse model, ACE2 was expressed in the heart and virus replication detected, but they did not observe cardiac inflammation. 181”

    From COVID-19, Myocarditis and Pericarditis (2023) · cites this paper as [181]

    Extended Data Fig. 1 reports hACE2 expression measurements in the heart, and the Discussion reports moderate levels of viral RNA there. The Results section on extra-pulmonary histopathology describes abnormalities in 2 of 9 hearts but does not report cardiac inflammatory infiltrates. The claim overstates the viral finding as detected replication: the cited passages establish viral RNA in the heart, not productive replication there. (LLM, conf=0.84)

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  • K18-hACE2 transgenic mice have a human ACE2 receptor which is the major cell entry receptor for SARS-CoV-2.

    “These transgenic mice have a human ACE2 receptor which is the major cell entry receptor for SARS-CoV-216,17.”

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Authors
Winkler, E. S., Bailey, A. L., Kafai, N. M., Nair, S., McCune, B. T., Yu, J., Fox, J. M., Chen, R. E., Earnest, J. T., Keeler, S. P., Ritter, J. H., Kang, L.-I., Dort, S., Robichaud, A., Head, R., Holtzman, M. J., & Diamond, M. S.
Affiliations
Washington University in St. Louis (US)
Corresponding author
Diamond, Michael S.
Venue
Nature Immunology
Published
2020-08-24
Volume
21
Issue
11
Pages
1327-1335
ISSN
  • 1529-2908 (ISSN-L)
  • 1529-2916
OpenAlex
W3080378920
Cited by
901
References
56
Citations by year
2026: 55 · 2025: 72 · 2024: 124 · 2023: 131 · 2022: 234 · 2021: 252 · 2020: 32
FWCI
21.20
Type
journal article
Language
en
Open access
Locations
  • Nature Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Department of Health & Human Services | NIH | National Institute of Allergy and Infectious Diseases (75N93019C00062, R01 AI127828, R01 AI130591, R35 HL145242, F32 AI138392)
  • United States Department of Defense | Defense Advanced Research Projects Agency (HR001117S0019)
Topics
  • Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
  • Health Sciences › Medicine › Infectious Diseases › COVID-19 Clinical Research Studies
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
Keywords
SARS-CoV-2, COVID-19 pandemic, K18-hACE2 mice, animal model of COVID-19, lung inflammation, lung function decline, monocytes, neutrophils, T cell activation, innate immune response, interferon signaling, NF-κB signaling
MeSH terms
Betacoronavirus, Angiotensin-Converting Enzyme 2, COVID-19, SARS-CoV-2, Animals, Chlorocebus aethiops, Disease Models, Animal, Female, Humans, Immunity, Innate, Interferon Type I, Interferon-gamma, Peptidyl-Dipeptidase A, Leukocytes, Lymphocyte Activation, Male, Mice, Transgenic, Monocytes, Neutrophils, Pneumonia, Pneumonia, Viral, Promoter Regions, Genetic, T-Lymphocytes, Vero Cells, Virus Replication, NF-kappa B, Coronavirus Infections, Neutrophil Infiltration, Mice, Keratin-18, Pandemics

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