Glucocorticoids limit acute lung inflammation in concert with inflammatory stimuli by induction of SphK1

Sabine Vettorazzi, Constantin Bode, Lien Dejager, Lucien Frappart, Ekaterina Shelest, Carina Klaßen, Alpaslan Tasdogan, Holger M. Reichardt, Claude Libert, Marion Schneider, Falk Weih, N. Henriette Uhlenhaut, Jean Pierre David, Markus Gräler, Anna Kleiman, Jan P. Tuckermann

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

119 Zitate (Scopus)

Abstract

Acute lung injury (ALI) is a severe inflammatory disease for which no specific treatment exists. As glucocorticoids have potent immunosuppressive effects, their application in ALI is currently being tested in clinical trials. However, the benefits of this type of regimen remain unclear. Here we identify a mechanism of glucocorticoid action that challenges the long-standing dogma of cytokine repression by the glucocorticoid receptor. Contrarily, synergistic gene induction of sphingosine kinase 1 (SphK1) by glucocorticoids and pro-inflammatory stimuli via the glucocorticoid receptor in macrophages increases circulating sphingosine 1-phosphate levels, which proves essential for the inhibition of inflammation. Chemical or genetic inhibition of SphK1 abrogates the therapeutic effects of glucocorticoids. Inflammatory p38 MAPK- and mitogen- and stress-activated protein kinase 1 (MSK1)-dependent pathways cooperate with glucocorticoids to upregulate SphK1 expression. Our findings support a critical role for SphK1 induction in the suppression of lung inflammation by glucocorticoids, and therefore provide rationales for effective anti-inflammatory therapies.

OriginalspracheEnglisch
Aufsatznummer7796
FachzeitschriftNature Communications
Jahrgang6
DOIs
PublikationsstatusVeröffentlicht - 17 Juli 2015
Extern publiziertJa

Fingerprint

Untersuchen Sie die Forschungsthemen von „Glucocorticoids limit acute lung inflammation in concert with inflammatory stimuli by induction of SphK1“. Zusammen bilden sie einen einzigartigen Fingerprint.

Dieses zitieren