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In vivo reprogramming of pathogenic lung TNFR2 cDC2s by IFNβ inhibits HDM-induced asthma. | LitMetric

In vivo reprogramming of pathogenic lung TNFR2 cDC2s by IFNβ inhibits HDM-induced asthma.

Sci Immunol

Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL 32610, USA.

Published: July 2021

AI Article Synopsis

Article Abstract

Asthma is a common inflammatory lung disease with no known cure. Previously, we uncovered a lung TNFR2 conventional DC2 subset (cDC2s) that induces regulatory T cells (T) maintaining lung tolerance at steady state but promotes T2 response during house dust mite (HDM)-induced asthma. Lung IFNβ is essential for TNFR2 cDC2s-mediated lung tolerance. Here, we showed that exogenous IFNβ reprogrammed T2-promoting pathogenic TNFR2 cDC2s back to tolerogenic DCs, alleviating eosinophilic asthma and preventing asthma exacerbation. Mechanistically, inhaled IFNβ, not IFNα, activated ERK2 signaling in pathogenic lung TNFR2 cDC2s, leading to enhanced fatty acid oxidation (FAO) and lung T induction. Last, human IFNβ reprogrammed pathogenic human lung TNFR2 cDC2s from patients with emphysema ex vivo. Thus, we identified an IFNβ-specific ERK2-FAO pathway that might be harnessed for DC therapy.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8323989PMC
http://dx.doi.org/10.1126/sciimmunol.abi8472DOI Listing

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