Mucus production stimulated by IFN-AhR signaling triggers hypoxia of COVID-19.
Mucus production stimulated by IFN-AhR signaling triggers hypoxia of COVID-19.
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DOI:
10.1038/s41422-020-00435-z
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发表时间:
2020-12
期刊:
影响因子:
44.1
通讯作者:
Huang B
中科院分区:
文献类型:
--
作者:
Liu Y;Lv J;Liu J;Li M;Xie J;Lv Q;Deng W;Zhou N;Zhou Y;Song J;Wang P;Qin C;Tong WM;Huang B
Silent hypoxia has emerged as a unique feature of coronavirus disease 2019 (COVID-19). In this study, we show that mucins are accumulated in the bronchoalveolar lavage fluid (BALF) of COVID-19 patients and are upregulated in the lungs of severe respiratory syndrome coronavirus 2 (SARS-CoV-2)-infected mice and macaques. We find that induction of either interferon (IFN)-β or IFN-γ upon SARS-CoV-2 infection results in activation of aryl hydrocarbon receptor (AhR) signaling through an IDO-Kyn-dependent pathway, leading to transcriptional upregulation of the expression of mucins, both the secreted and membrane-bound, in alveolar epithelial cells. Consequently, accumulated alveolar mucus affects the blood-gas barrier, thus inducing hypoxia and diminishing lung capacity, which can be reversed by blocking AhR activity. These findings potentially explain the silent hypoxia formation in COVID-19 patients, and suggest a possible intervention strategy by targeting the AhR pathway.
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