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@ARTICLE{Tth:136822,
author = {A. D. Tóth and R. Schell and M. Lévay and C. Vettel and
P. Theis and C. Haslinger and F. Alban and S. Werhahn and L.
Frischbier and J. Krebs-Haupenthal and D. Thomas and H.-J.
Gröne$^*$ and M. Avkiran and H. A. Katus and T. Wieland and
J. Backs},
title = {{I}nflammation leads through {PGE}/{EP}3 signaling to
{HDAC}5/{MEF}2-dependent transcription in cardiac myocytes.},
journal = {EMBO molecular medicine},
volume = {10},
number = {7},
issn = {1757-4684},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {DKFZ-2018-01260},
pages = {e8536 -},
year = {2018},
abstract = {The myocyte enhancer factor 2 (MEF2) regulates
transcription in cardiac myocytes and adverse remodeling of
adult hearts. Activators of G protein-coupled receptors
(GPCRs) have been reported to activate MEF2, but a
comprehensive analysis of GPCR activators that regulate MEF2
has to our knowledge not been performed. Here, we tested
several GPCR agonists regarding their ability to activate a
MEF2 reporter in neonatal rat ventricular myocytes. The
inflammatory mediator prostaglandin E2 (PGE2) strongly
activated MEF2. Using pharmacological and protein-based
inhibitors, we demonstrated that PGE2 regulates MEF2 via the
EP3 receptor, the βγ subunit of Gi/o protein and two
concomitantly activated downstream pathways. The first
consists of Tiam1, Rac1, and its effector p21-activated
kinase 2, the second of protein kinase D. Both pathways
converge on and inactivate histone deacetylase 5 (HDAC5) and
thereby de-repress MEF2. In vivo, endotoxemia in
MEF2-reporter mice induced upregulation of PGE2 and MEF2
activation. Our findings provide an unexpected new link
between inflammation and cardiac remodeling by de-repression
of MEF2 through HDAC5 inactivation, which has potential
implications for new strategies to treat inflammatory
cardiomyopathies.},
cin = {G130},
ddc = {610},
cid = {I:(DE-He78)G130-20160331},
pnm = {322 - Genetics and Pathophysiology (POF3-322)},
pid = {G:(DE-HGF)POF3-322},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29907596},
pmc = {pmc:PMC6034133},
doi = {10.15252/emmm.201708536},
url = {https://inrepo02.dkfz.de/record/136822},
}