Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Review
. 2022 Feb:74:172-182.
doi: 10.1016/j.coi.2022.01.003. Epub 2022 Jan 25.

Type I interferons and SARS-CoV-2: from cells to organisms

Affiliations
Review

Type I interferons and SARS-CoV-2: from cells to organisms

Paul Bastard et al. Curr Opin Immunol. 2022 Feb.

Abstract

Type I interferons (IFNs) have broad and potent antiviral activity. We review the interplay between type I IFNs and SARS-CoV-2. Human cells infected with SARS-CoV-2 in vitro produce low levels of type I IFNs, and SARS-CoV-2 proteins can inhibit various steps in type I IFN production and response. Exogenous type I IFNs inhibit viral growth in vitro. In various animal species infected in vivo, type I IFN deficiencies underlie higher viral loads and more severe disease than in control animals. The early administration of exogenous type I IFNs improves infection control. In humans, inborn errors of, and auto-antibodies against type I IFNs underlie life-threatening COVID-19 pneumonia. Overall, type I IFNs are essential for host defense against SARS-CoV-2 in individual cells and whole organisms.

PubMed Disclaimer

Figures

Figure 1
Figure 1
Life-threatening COVID-19 can be caused in Humans by inborn errors of type I IFN immunity or autoantibodies neutralizing type I IFNs. Both mechanisms interfering with type I IFN immunity in respiratory epithelial cells and blood plasmacytoid dendritic cells. SARS-CoV-2 can replicate in respiratory epithelial cells (REC), but not in pDC which is why the responsive pathway is only shown in REC, where anti-viral ISG will matter, while the self-amplification loop of type I IFN does probably also operate in pDCs. Monogenic inborn errors of type I IFN immunity are shown in red. Auto-Abs to type I IFNs are shown in red. SARS-CoV-2 proteins which can inhibit proteins of the type I IFN pathway are shown in blue. Type I IFNs are shown in blue circles. IFN: interferon; Auto-Ab: autoantibody, ISGs: interferon-stimulated genes.
Figure 2
Figure 2
Odds Ratios for critical disease in SARS-CoV-2-infected individuals with auto-Abs against type I IFNs. Odds ratios (OR) and P-values were estimated by means of Firth’s bias-corrected logistic regression.

Similar articles

Cited by

References

    1. Hoffmann H.H., Schneider W.M., Rice C.M. Interferons and viruses: an evolutionary arms race of molecular interactions. Trends Immunol. 2015;36:124–138. - PMC - PubMed
    1. Theves C., Crubezy E., Biagini P. History of smallpox and its spread in human populations. Microbiol Spectr. 2016;4 - PubMed
    1. Breitbart M., Rohwer F. Here a virus, there a virus, everywhere the same virus? Trends Microbiol. 2005;13:278–284. - PubMed
    1. Zhou P., Yang X.L., Wang X.G., Hu B., Zhang L., Zhang W., Si H.R., Zhu Y., Li B., Huang C.L., et al. A pneumonia outbreak associated with a new coronavirus of probable bat origin. Nature. 2020;579:270–273. - PMC - PubMed
    1. Worldometer . vol 2021. 2021. (COVID-19 Coronavirus Pandemic).

Publication types

Substances