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- W3168200470 abstract "ABSTRACT The outbreak of coronavirus disease 2019 (COVID-19) has extensively impacted global health. The causative pathogen, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), binds to the angiotensin-converting enzyme 2 (ACE2) receptor, a transmembrane metallo-carboxypeptidase that is expressed in both membrane-anchored (mACE2) and soluble (sACE2) forms in the lung. Tobacco use has been speculated as a vulnerability factor for contracting SARS-CoV-2 infection and subsequent disease severity, whilst electronic cigarettes (e-cigarettes) have been shown to induce harmful proteomic and immune changes in the lungs of vapers. We therefore tested the hypothesis that combustible tobacco (e.g. cigarettes) and non-combustible e-cigarettes could affect ACE2 activity and subsequent SARS-CoV-2 infection. We observed that sACE2 activity was significantly higher in bronchoalveolar lavage fluid from both smokers and vapers compared to age-matched non-smokers. Exposure to cigarette smoke increased ACE2 levels, mACE2 activity, and sACE2 in primary bronchial epithelial cultures. Finally, treatment with either cigarette smoke condensate or JUUL e-liquid increased infections with a spike-coated SARS-CoV-2 pseudovirus. Overall, these observations suggest that tobacco product use elevates ACE2 activity and increases the potential for SARS-CoV-2 infection through enhanced spike protein binding." @default.
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- W3168200470 date "2021-06-06" @default.
- W3168200470 modified "2023-10-07" @default.
- W3168200470 title "Combustible and electronic cigarette exposures increase ACE2 activity and SARS-CoV-2 Spike binding" @default.
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- W3168200470 doi "https://doi.org/10.1101/2021.06.04.447156" @default.
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