Neutrophil elastase decreases SARS-CoV-2 spike protein binding to human bronchial epithelia by clipping ACE-2 ectodomain from the epithelial surface. - Kummarapurugu, Apparao B.; Hawkridge, Adam M.; Ma, Jonathan; Osei, Stephanie; Martin, Rebecca K.; Shuo Zheng; Voynow, Judith A. (Journal of Biological Chemistry, 2023)