Publication Database

Loss of endothelial CFTR drives barrier failure and edema formation in lung infection and can be targeted by CFTR potentiation (2022)

Art

Zeitschriftenartikel / wissenschaftlicher Beitrag

Autoren

Erfinanda, Lasti

Zou, Lin

Gutbier, Birgitt

Kneller, Laura

Weidenfeld, Sarah

Michalick, Laura

Lei, Disi

Reppe, Katrin

Teixeira Alves, Luiz Gustavo

Schneider, Bill

Zhang, Qi

Li, Caihong

Fatykhova, Diana

Schneider, Paul

Liedtke, Wolfgang

Sohara, Eisei

Mitchell, Timothy J.

Gruber, Achim D. (WE 12)

Hocke, Andreas

Hippenstiel, Stefan

Suttorp, Norbert

Olschewski, Andrea

Mall, Marcus A.

Witzenrath, Martin

Kuebler, Wolfgang M.

Quelle

Science translational medicine : integrating medicine and science

Bandzählung: 14

Heftzählung: 674

Seiten: Artikel eabg8577

ISSN: 1946-6242

Sprache

Englisch

Verweise

URL (Volltext): https://www.science.org/doi/10.1126/scitranslmed.abg8577

DOI: 10.1126/scitranslmed.abg8577

Pubmed: 36475904

Kontakt

Institut für Tierpathologie

Robert-von-Ostertag-Str. 15
14163 Berlin
+49 30 838 62450
pathologie@vetmed.fu-berlin.de

Abstract / Zusammenfassung

Pneumonia is the most common cause of the acute respiratory distress syndrome (ARDS). Here, we identified loss of endothelial cystic fibrosis transmembrane conductance regulator (CFTR) as an important pathomechanism leading to lung barrier failure in pneumonia-induced ARDS. CFTR was down-regulated after Streptococcus pneumoniae infection ex vivo or in vivo in human or murine lung tissue, respectively. Analysis of isolated perfused rat lungs revealed that CFTR inhibition increased endothelial permeability in parallel with intracellular chloride ion and calcium ion concentrations ([Cl-]i and [Ca2+]i). Inhibition of the chloride ion-sensitive with-no-lysine kinase 1 (WNK1) protein with tyrphostin 47 or WNK463 replicated the effect of CFTR inhibition on endothelial permeability and endothelial [Ca2+]i, whereas WNK1 activation by temozolomide attenuated it. Endothelial [Ca2+]i transients and permeability in response to inhibition of either CFTR or WNK1 were prevented by inhibition of the cation channel transient receptor potential vanilloid 4 (TRPV4). Mice deficient in Trpv4 (Trpv4-/-) developed less lung edema and protein leak than their wild-type littermates after infection with S. pneumoniae. The CFTR potentiator ivacaftor prevented lung CFTR loss, edema, and protein leak after S. pneumoniae infection in wild-type mice. In conclusion, lung infection caused loss of CFTR that promoted lung edema formation through intracellular chloride ion accumulation, inhibition of WNK1, and subsequent disinhibition of TRPV4, resulting in endothelial calcium ion influx and vascular barrier failure. Ivacaftor prevented CFTR loss in the lungs of mice with pneumonia and may, therefore, represent a possible therapeutic strategy in people suffering from ARDS due to severe pneumonia.