TY - JOUR
T1 - Constitutive immune activity promotes JNK- and FoxO-dependent remodeling of Drosophila airways
AU - Wagner, Christina
AU - Uliczka, Karin
AU - Bossen, Judith
AU - Niu, Xiao
AU - Fink, Christine
AU - Thiedmann, Marcus
AU - Knop, Mirjam
AU - Vock, Christina
AU - Abdelsadik, Ahmed
AU - Zissler, Ulrich M.
AU - Isermann, Kerstin
AU - Garn, Holger
AU - Pieper, Mario
AU - Wegmann, Michael
AU - Koczulla, Andreas R.
AU - Vogelmeier, Claus F.
AU - Schmidt-Weber, Carsten B.
AU - Fehrenbach, Heinz
AU - König, Peter
AU - Silverman, Neil
AU - Renz, Harald
AU - Pfefferle, Petra
AU - Heine, Holger
AU - Roeder, Thomas
N1 - Publisher Copyright:
© 2021 The Author(s)
PY - 2021/4/6
Y1 - 2021/4/6
N2 - Extensive remodeling of the airways is a major characteristic of chronic inflammatory lung diseases such as asthma or chronic obstructive pulmonary disease (COPD). To elucidate the importance of a deregulated immune response in the airways for remodeling processes, we established a matching Drosophila model. Here, triggering the Imd (immune deficiency) pathway in tracheal cells induced organ-wide remodeling. This structural remodeling comprises disorganization of epithelial structures and comprehensive epithelial thickening. We show that these structural changes do not depend on the Imd pathway's canonical branch terminating on nuclear factor κB (NF-κB) activation. Instead, activation of a different segment of the Imd pathway that branches off downstream of Tak1 and comprises activation of c-Jun N-terminal kinase (JNK) and forkhead transcription factor of the O subgroup (FoxO) signaling is necessary and sufficient to mediate the observed structural changes of the airways. Our findings imply that targeting JNK and FoxO signaling in the airways could be a promising strategy to interfere with disease-associated airway remodeling processes.
AB - Extensive remodeling of the airways is a major characteristic of chronic inflammatory lung diseases such as asthma or chronic obstructive pulmonary disease (COPD). To elucidate the importance of a deregulated immune response in the airways for remodeling processes, we established a matching Drosophila model. Here, triggering the Imd (immune deficiency) pathway in tracheal cells induced organ-wide remodeling. This structural remodeling comprises disorganization of epithelial structures and comprehensive epithelial thickening. We show that these structural changes do not depend on the Imd pathway's canonical branch terminating on nuclear factor κB (NF-κB) activation. Instead, activation of a different segment of the Imd pathway that branches off downstream of Tak1 and comprises activation of c-Jun N-terminal kinase (JNK) and forkhead transcription factor of the O subgroup (FoxO) signaling is necessary and sufficient to mediate the observed structural changes of the airways. Our findings imply that targeting JNK and FoxO signaling in the airways could be a promising strategy to interfere with disease-associated airway remodeling processes.
UR - http://www.scopus.com/inward/record.url?scp=85103777912&partnerID=8YFLogxK
U2 - 10.1016/j.celrep.2021.108956
DO - 10.1016/j.celrep.2021.108956
M3 - Journal articles
C2 - 33826881
AN - SCOPUS:85103777912
SN - 2211-1247
VL - 35
JO - Cell Reports
JF - Cell Reports
IS - 1
M1 - 108956
ER -