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@ARTICLE{Sattler:169897,
author = {K. Sattler and I. El-Battrawy and L. Cyganek and S. Lang
and H. Lan and X. Li and Z. Zhao and J. Utikal$^*$ and T.
Wieland and M. Borggrefe and X. Zhou and I. Akin},
title = {{TRPV}1 activation and internalization is part of the
{LPS}-induced inflammation in human i{PSC}-derived
cardiomyocytes.},
journal = {Scientific reports},
volume = {11},
number = {1},
issn = {2045-2322},
address = {[London]},
publisher = {Macmillan Publishers Limited, part of Springer Nature},
reportid = {DKFZ-2021-01631},
pages = {14689},
year = {2021},
abstract = {The non-selective cation channel transient receptor
potential vanilloid 1 (TRPV1) is expressed throughout the
cardiovascular system. Recent evidence shows a role for
TRPV1 in inflammatory processes. The role of TRPV1 for
myocardial inflammation has not been established yet. Human
induced pluripotent stem cell (iPSC)-derived cardiomyocytes
(hiPSC-CM) from 4 healthy donors were incubated with
lipopolysaccharides (LPS, 6 h), TRPV1 agonist capsaicin
(CAP, 20 min) or the antagonist capsazepine (CPZ, 20 min).
TRPV1 expression was studied by PCR and western blotting.
TRPV1 internalization was analyzed by immunofluorescence.
Interleukin-6 (IL-6) secretion and phosphorylation of JNK,
p38 and ERK were determined by ELISA. TRPV1-associated ion
channel current was measured by patch clamp. TRPV1-mRNA and
-protein were expressed in hiPSC-CM. TRPV1 was localized in
the plasma membrane. LPS significantly increased secretion
of IL-6 by 2.3-fold, which was prevented by pre-incubation
with CPZ. LPS induced TRPV1 internalization. Phosphorylation
levels of ERK, p38 or JNK were not altered by TRPV1
stimulation or inhibition. LPS and IL-6 significantly
lowered TRPV1-mediated ion channel current. TRPV1 mediates
the LPS-induced inflammation in cardiomyocytes, associated
with changes of cellular electrophysiology. LPS-induced
inflammation results in TRPV1 internalization. Further
studies have to examine the underlying pathways and the
clinical relevance of these findings.},
cin = {A370},
ddc = {600},
cid = {I:(DE-He78)A370-20160331},
pnm = {311 - Zellbiologie und Tumorbiologie (POF4-311)},
pid = {G:(DE-HGF)POF4-311},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34282193},
doi = {10.1038/s41598-021-93958-3},
url = {https://inrepo02.dkfz.de/record/169897},
}