Baricitinib treatment resolves lower-airway macrophage inflammation and neutrophil recruitment in SARS-CoV-2-infected rhesus macaques.
Cell
; 184(2): 460-475.e21, 2021 01 21.
Article
in En
| MEDLINE
| ID: mdl-33278358
SARS-CoV-2-induced hypercytokinemia and inflammation are critically associated with COVID-19 severity. Baricitinib, a clinically approved JAK1/JAK2 inhibitor, is currently being investigated in COVID-19 clinical trials. Here, we investigated the immunologic and virologic efficacy of baricitinib in a rhesus macaque model of SARS-CoV-2 infection. Viral shedding measured from nasal and throat swabs, bronchoalveolar lavages, and tissues was not reduced with baricitinib. Type I interferon (IFN) antiviral responses and SARS-CoV-2-specific T cell responses remained similar between the two groups. Animals treated with baricitinib showed reduced inflammation, decreased lung infiltration of inflammatory cells, reduced NETosis activity, and more limited lung pathology. Importantly, baricitinib-treated animals had a rapid and remarkably potent suppression of lung macrophage production of cytokines and chemokines responsible for inflammation and neutrophil recruitment. These data support a beneficial role for, and elucidate the immunological mechanisms underlying, the use of baricitinib as a frontline treatment for inflammation induced by SARS-CoV-2 infection.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Purines
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Pyrazoles
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Sulfonamides
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Azetidines
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Neutrophil Infiltration
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COVID-19
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COVID-19 Drug Treatment
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Macaca mulatta
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Anti-Inflammatory Agents
Limits:
Animals
Language:
En
Journal:
Cell
Year:
2021
Document type:
Article
Affiliation country:
Country of publication: