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
. 2020 May 4;217(5):e20200653.
doi: 10.1084/jem.20200653.

COVID-19 and emerging viral infections: The case for interferon lambda

Affiliations

COVID-19 and emerging viral infections: The case for interferon lambda

Ludmila Prokunina-Olsson et al. J Exp Med. .

Abstract

With the first reports on coronavirus disease 2019 (COVID-19), which is caused by the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the scientific community working in the field of type III IFNs (IFN-λ) realized that this class of IFNs could play an important role in this and other emerging viral infections. In this Viewpoint, we present our opinion on the benefits and potential limitations of using IFN-λ to prevent, limit, and treat these dangerous viral infections.

PubMed Disclaimer

Figures

Figure 1.
Figure 1.
Potential benefits of using type III IFNs for prevention and treatment of COVID-19 Type I IFNs (IFN-α/β) signal through a heterodimeric receptor complex, IFNAR, which is comprised of IFNAR1 and IFNAR2 subunits. IFNAR activation induces expression of ISGs and triggers pro-inflammatory responses via the recruitment and activation of immune cells. This promotes an antiviral state in the host, but as IFNAR is expressed on all cells, the administration of type I IFN can have serious systemic side effects. In contrast, type III IFNs (IFN-λ1-4) signal through a distinct receptor complex, IFNLR, which consists of IL10R2 and IFNLR1 subunits. IFNLR1 expression is restricted to epithelial cells and a subset of immune cells, including neutrophils. Therefore, type III IFN administration as a prophylactic treatment or at an early stage of COVID-19 would result in ISG expression and antiviral response localized to epithelial cells, reducing side effects and inflammation associated with the systemic action of type I IFNs.

Similar articles

Cited by

References

    1. Blazek K., et al. J. Exp. Med. 2015 doi: 10.1084/jem.20140995. - DOI - PubMed
    1. Broggi A., et al. Nat. Immunol. 2017 doi: 10.1038/ni.3821. - DOI - PMC - PubMed
    1. Broggi A., et al. J. Exp. Med. 2020 doi: 10.1084/jem.20190295. - DOI - PubMed
    1. Crotta S., et al. PLoS Pathog. 2013 doi: 10.1371/journal.ppat.1003773. - DOI - PMC - PubMed
    1. Davidson S., et al. J. Interferon Cytokine Res. 2015 doi: 10.1089/jir.2014.0227. - DOI - PMC - PubMed

Publication types