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@ARTICLE{Tretter:140001,
author = {Tretter, Jana Ylva and Schorpp, Kenji and Luxenburger, Elke
and Trambauer, Johannes and Steiner, Harald and Hadian,
Kamyar and Gires, Olivier and Niessing, Dierk},
title = {{A} high-content screen for small-molecule regulators of
epithelial cell-adhesion molecule ({E}p{CAM}) cleavage
yields a robust inhibitor.},
journal = {The journal of biological chemistry},
volume = {293},
number = {23},
issn = {0021-9258},
address = {Bethesda, Md.},
publisher = {Soc.60645},
reportid = {DZNE-2020-06323},
pages = {8994-9005},
year = {2018},
abstract = {Epithelial cell-adhesion molecule (EpCAM) is a
transmembrane protein that regulates cell cycle progression
and differentiation and is overexpressed in many carcinomas.
The EpCAM-induced mitogenic cascade is activated via
regulated intramembrane proteolysis (RIP) of EpCAM by ADAM
and γ-secretases, generating the signaling-active
intracellular domain EpICD. Because of its expression
pattern and molecular function, EpCAM is a valuable target
in prognostic and therapeutic approaches for various
carcinomas. So far, several immunotherapeutic strategies
have targeted the extracellular domain of EpCAM. However,
targeting the intracellular signaling cascade of EpCAM holds
promise for specifically interfering with EpCAM's
proliferation-stimulating signaling cascade. Here, using a
yellow fluorescence protein-tagged version of the C-terminal
fragment of EpCAM, we established a high-content screening
(HCS) of a small-molecule compound library (n = 27,280) and
characterized validated hits that target EpCAM signaling. In
total, 128 potential inhibitors were initially identified,
of which one compound with robust inhibitory effects on RIP
of EpCAM was analyzed in greater detail. In summary, our
study demonstrates that the development of an HCS for
small-molecule inhibitors of the EpCAM signaling pathway is
feasible. We propose that this approach may also be useful
for identifying chemical compounds targeting other disorders
involving membrane cleavage-dependent signaling pathways.},
keywords = {Cell Proliferation: drug effects / Drug Evaluation,
Preclinical: methods / Epithelial Cell Adhesion Molecule:
antagonists $\&$ inhibitors / Epithelial Cell Adhesion
Molecule: metabolism / HEK293 Cells / High-Throughput
Screening Assays: methods / Humans / Signal Transduction:
drug effects / Small Molecule Libraries: chemistry / Small
Molecule Libraries: pharmacology / Transcription, Genetic:
drug effects / Epithelial Cell Adhesion Molecule (NLM
Chemicals) / Small Molecule Libraries (NLM Chemicals)},
cin = {AG Steiner},
ddc = {540},
cid = {I:(DE-2719)1110000-1},
pnm = {342 - Disease Mechanisms and Model Systems (POF3-342)},
pid = {G:(DE-HGF)POF3-342},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29700109},
pmc = {pmc:PMC5995519},
doi = {10.1074/jbc.RA118.002776},
url = {https://pub.dzne.de/record/140001},
}