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@ARTICLE{Papathanasiou:127270,
author = {S. Papathanasiou and S. Rickelt$^*$ and M. E. Soriano and
T. G. Schips and H. J. Maier and C. H. Davos and A. Varela
and L. Kaklamanis and D. L. Mann and Y. Capetanaki},
title = {{T}umor necrosis factor-α confers cardioprotection through
ectopic expression of keratins {K}8 and {K}18.},
journal = {Nature medicine},
volume = {21},
number = {9},
issn = {1546-170X},
address = {New York, NY},
publisher = {Nature America Inc.},
reportid = {DKFZ-2017-03295},
pages = {1076 - 1084},
year = {2015},
abstract = {Tumor necrosis factor-α (TNF-α), one of the major
stress-induced proinflammatory cytokines, is upregulated in
the heart after tissue injury, and its sustained expression
can contribute to the development of heart failure. Whether
TNF-α also exerts cytoprotective effects in heart failure
is not known. Here we provide evidence for a
cardioprotective function of TNF-α in a genetic heart
failure model, desmin-deficient mice. The cardioprotective
effects of TNF-α are a consequence of nuclear factor-κB
(NF-κB)-mediated ectopic expression in cardiomyocytes of
keratin 8 (K8) and keratin 18 (K18), two epithelial-specific
intermediate filament proteins. In cardiomyocytes, K8 and
K18 (K8/K18) formed an alternative cytoskeletal network that
localized mainly at intercalated discs (IDs) and conferred
cardioprotection by maintaining normal ID structure and
mitochondrial integrity and function. Ectopic induction of
K8/K18 expression in cardiomyocytes also occurred in other
genetic and experimental models of heart failure. Loss of
the K8/K18 network resulted in a maladaptive cardiac
phenotype following transverse aortic constriction. In human
failing myocardium, where TNF-α expression is upregulated,
K8/K18 were also ectopically expressed and localized
primarily at IDs, which did not contain detectable amounts
of desmin. Thus, TNF-α- and NF-κB-mediated formation of an
alternative, stress-induced intermediate filament
cytoskeleton has cardioprotective function in mice and
potentially in humans.},
keywords = {Desmin (NLM Chemicals) / Keratin-18 (NLM Chemicals) /
Keratin-8 (NLM Chemicals) / NF-kappa B (NLM Chemicals) /
Tumor Necrosis Factor-alpha (NLM Chemicals)},
cin = {A991},
ddc = {610},
cid = {I:(DE-He78)A991-20160331},
pnm = {311 - Signalling pathways, cell and tumor biology
(POF3-311)},
pid = {G:(DE-HGF)POF3-311},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:26280121},
pmc = {pmc:PMC5419049},
doi = {10.1038/nm.3925},
url = {https://inrepo02.dkfz.de/record/127270},
}