[HTML][HTML] STAT2 signaling restricts viral dissemination but drives severe pneumonia in SARS-CoV-2 infected hamsters

R Boudewijns, HJ Thibaut, SJF Kaptein, R Li… - Nature …, 2020 - nature.com
R Boudewijns, HJ Thibaut, SJF Kaptein, R Li, V Vergote, L Seldeslachts, J Van Weyenbergh
Nature communications, 2020nature.com
Emergence of SARS-CoV-2 causing COVID-19 has resulted in hundreds of thousands of
deaths. In search for key targets of effective therapeutics, robust animal models mimicking
COVID-19 in humans are urgently needed. Here, we show that Syrian hamsters, in contrast
to mice, are highly permissive to SARS-CoV-2 and develop bronchopneumonia and strong
inflammatory responses in the lungs with neutrophil infiltration and edema, further confirmed
as consolidations visualized by micro-CT alike in clinical practice. Moreover, we identify an …
Abstract
Emergence of SARS-CoV-2 causing COVID-19 has resulted in hundreds of thousands of deaths. In search for key targets of effective therapeutics, robust animal models mimicking COVID-19 in humans are urgently needed. Here, we show that Syrian hamsters, in contrast to mice, are highly permissive to SARS-CoV-2 and develop bronchopneumonia and strong inflammatory responses in the lungs with neutrophil infiltration and edema, further confirmed as consolidations visualized by micro-CT alike in clinical practice. Moreover, we identify an exuberant innate immune response as key player in pathogenesis, in which STAT2 signaling plays a dual role, driving severe lung injury on the one hand, yet restricting systemic virus dissemination on the other. Our results reveal the importance of STAT2-dependent interferon responses in the pathogenesis and virus control during SARS-CoV-2 infection and may help rationalizing new strategies for the treatment of COVID-19 patients.
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