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@ARTICLE{Schlensog:826699,
author = {Schlensog, Martin and Magnus, Lara and Heide, Timon and
Eschenbruch, Julian and Steib, Florian and Tator, Maximilian
and Kloten, Vera and Rose, Michael and Noetzel, Erik and
Gaisa, Nadine T. and Knüchel, Ruth and Dahl, Edgar},
title = {{E}pigenetic loss of putative tumor suppressor {SFRP}3
correlates with poor prognosis of lung adenocarcinoma
patients},
journal = {Epigenetics},
volume = {13},
number = {3},
issn = {1559-2308},
address = {Austin, Tex.},
publisher = {Landes Bioscience},
reportid = {FZJ-2017-00917},
pages = {214-227},
year = {2018},
abstract = {Secreted frizzled related protein 3 (SFRP3) contains a
cysteine-rich domain (CRD) that shares homology with
Frizzled CRD and regulates WNT signaling. Independent
studies showed epigenetic silencing of SFRP3 in melanoma and
hepatocellular carcinoma. Moreover, a tumor suppressive
function of SFRP3 was shown in androgen-independent prostate
and gastric cancer cells. The current study is the first to
investigate SFRP3 expression and its potential clinical
impact on non-small cell lung carcinoma (NSCLC). WNT
signaling components present on NSCLC subtypes were
preliminary elucidated by expression data of The Cancer
Genome Atlas (TCGA). We identified a distinct expression
signature of relevant WNT signaling components that differ
between adenocarcinoma (LUAD) and squamous cell carcinoma
(LUSC). Of interest, canonical WNT signaling is predominant
in LUAD samples and non-canonical WNT signaling is
predominant in LUSC. In line, high SFRP3 expression resulted
in beneficial clinical outcome for LUAD but not for LUSC
patients. Furthermore, SFRP3 mRNA expression was
significantly decreased in NSCLC tissue compared to normal
lung samples. TCGA data verified the reduction of SFRP3 in
LUAD and LUSC patients. Moreover, DNA hypermethylation of
SFRP3 was evaluated in the TCGA methylation dataset
resulting in epigenetic inactivation of SFRP3 expression in
LUAD, but not in LUSC, and was validated by pyrosequencing
of our NSCLC tissue cohort and in vitro demethylation
experiments. Immunohistochemistry confirmed SFRP3 protein
downregulation in primary NSCLC and indicated ...},
cin = {ICS-7},
ddc = {610},
cid = {I:(DE-Juel1)ICS-7-20110106},
pnm = {552 - Engineering Cell Function (POF3-552)},
pid = {G:(DE-HGF)POF3-552},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:27623992},
UT = {WOS:000434326600002},
doi = {10.1080/15592294.2016.1229730},
url = {https://juser.fz-juelich.de/record/826699},
}