Publication
Title
Noncanonical TGF beta Signaling Contributes to Aortic Aneurysm Progression in Marfan Syndrome Mice
Author
Abstract
Transforming growth factor-beta (TGF beta) signaling drives aneurysm progression in multiple disorders, including Marfan syndrome (MFS), and therapies that inhibit this signaling cascade are in clinical trials. TGF beta can stimulate multiple intracellular signaling pathways, but it is unclear which of these pathways drives aortic disease and, when inhibited, which result in disease amelioration. Here we show that extracellular signal-regulated kinase (ERK) 1 and 2 and Smad2 are activated in a mouse model of MFS, and both are inhibited by therapies directed against TGF beta. Whereas selective inhibition of ERK1/2 activation ameliorated aortic growth, Smad4 deficiency exacerbated aortic disease and caused premature death in MFS mice. Smad4-deficient MFS mice uniquely showed activation of Jun N-terminal kinase-1 (JNK1), and a JNK antagonist ameliorated aortic growth in MFS mice that lacked or retained full Smad4 expression. Thus, noncanonical (Smad-independent) TGF beta signaling is a prominent driver of aortic disease in MFS mice, and inhibition of the ERK1/2 or JNK1 pathways is a potential therapeutic strategy for the disease.
Language
English
Source (journal)
Science / American Association for the Advancement of Science [Washington, D.C.] - Washington, D.C.
Publication
Washington, D.C. : 2011
ISSN
0036-8075
1095-9203
Volume/pages
332 :6027 (2011) , p. 358-361
ISI
000289516600047
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 05.11.2018
Last edited 04.09.2021