Idiopathic pulmonary fibrosis (IPF) is a progressive and lethal disease characterized by excessive extracellular matrix deposition. Current IPF therapies slow disease progression but do not stop or reverse it. The (myo)fibroblasts are thought to be the main cellular contributors to excessive extracellular matrix production in IPF. Here we show that fibrotic alveolar type II cells regulate production and crosslinking of extracellular matrix via the co-transcriptional activator YAP. YAP leads to increased expression of Lysl oxidase (LOX) and subsequent LOX-mediated crosslinking by fibrotic alveolar type II cells. Pharmacological YAP inhibition via verteporfin reverses fibrotic alveolar type II cell reprogramming and LOX expression in experimental lung fibrosis in vivo and in human fibrotic tissue ex vivo. We thus identify YAP-TEAD/LOX inhibition in alveolar type II cells as a promising potential therapy for IPF patients.
FörderungenDeutsche Forschungsgemeinschaft Health Geriatric Research Education and Clinical Center (TECH-GRECC) at the VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania Lund Bioimaging Center German Center for Lung Research (DZL) Helmholtz Association (W2 Professorship Program) Three Lakes Foundation (Three Lakes Consortium for Pulmonary Fibrosis) National Institute of Health Common Funds National Institute of Health Chan Zuckerberg foundation American Thoracic Society Unrestricted Grant Breath endowment fund Helmholtz Zentrum Muenchen Postdoctoral Fellowship Whitaker Foundation International Scholar Award Swedish Research Council European Research Council (ERC) Canada Excellence Research Chairs Program Technology Enhancing Cognition