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SARS-CoV-2 infection of human airway epithelium activates genetic programs that lead to progressive hyperinflammation in COVID-19 patients. Here we report on genetic programs activated by interferons and the suppression by Janus kinase (JAK) inhibitors. The angiotensin-converting enzyme 2 (ACE2) is the receptor for SARS-CoV-2 and deciphering its regulation is paramount for understanding the cell tropism of SARS-CoV-2 infection. We identified candidate regulatory elements in the ACE2 locus in human primary airway cells and lung tissue. Activating histone and promoter marks and Pol II loading characterize the intronic dACE2 and define novel candidate enhancers distal to the genuine ACE2 promoter and within additional introns. dACE2, and to a lesser extent ACE2, RNA levels increased in primary cells treated with interferons and this induction was mitigated by JAK inhibitors that are used therapeutically in COVID-19 patients. Our analyses provide insight into ACE2 regulatory elements and highlight JAK inhibitors as suitable tools to suppress interferon-activated genetic programs in bronchial cells.
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10.21203/rs.3.rs-119695/v1
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document_parses/pdf_json/3e9f0636fd93ed8e0094a913909c08d450f0a17a.json
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Activation of Interferon-Stimulated Transcriptomes and ACE2 Isoforms in Human Airway Epithelium Is Curbed by Janus Kinase Inhibitors
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