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@ARTICLE{Dutruel:119893,
author = {C. Dutruel$^*$ and F. Bergmann and I. Rooman and M.
Zucknick$^*$ and D. Weichenhan$^*$ and L. Geiselhart$^*$ and
T. Kaffenberger and P. S. K. Rachakonda$^*$ and A. Bauer and
N. Giese and C. Hong and H. Xie and J. F. Costello and J.
Hoheisel$^*$ and R. Kumar$^*$ and M. Rehli and P.
Schirmacher and J. Werner and C. Plass$^*$ and O.
Popanda$^*$ and P. Schmezer$^*$},
title = {{E}arly epigenetic downregulation of {WNK}2 kinase during
pancreatic ductal adenocarcinoma development.},
journal = {Oncogene},
volume = {33},
number = {26},
issn = {1476-5594},
address = {Basingstoke},
publisher = {Nature Publ. Group},
reportid = {DKFZ-2017-00484},
pages = {3401 - 3410},
year = {2014},
abstract = {Pancreatic ductal adenocarcinoma (PDAC) is usually
incurable. Contrary to genetic mechanisms involved in PDAC
pathogenesis, epigenetic alterations are ill defined. Here,
we determine the contribution of epigenetically silenced
genes to the development of PDAC. We analyzed enriched,
highly methylated DNAs from PDACs, chronic pancreatitis (CP)
and normal tissues using CpG island microarrays and
identified WNK2 as a prominent candidate tumor suppressor
gene being downregulated early in PDAC development. WNK2 was
further investigated in tissue microarrays, methylation
analysis of early pancreatic intraepithelial neoplasia
(PanIN), mouse models for PDAC and pancreatitis,
re-expression studies after demethylation, and cell growth
assays using WNK2 overexpression. Demethylation assays
confirmed the link between methylation and expression. WNK2
hypermethylation was higher in tumor than in surrounding
inflamed tissues and was observed in PanIN lesions as well
as in a PDAC mouse model. WNK2 mRNA and protein expressions
were lower in PDAC and CP compared with normal tissues both
in patients and mouse models. Overexpression of WNK2 led to
reduced cell growth, and WNK2 expression in tissues
correlated negatively with pERK1/2 expression, a downstream
target of WNK2 responsible for cell proliferation.
Downregulation of WNK2 by promoter hypermethylation occurs
early in PDAC pathogenesis and may support tumor cell growth
via the ERK-MAPK pathway.},
keywords = {RNA, Messenger (NLM Chemicals) / WNK2 protein, human (NLM
Chemicals) / Protein-Serine-Threonine Kinases (NLM
Chemicals) / Extracellular Signal-Regulated MAP Kinases (NLM
Chemicals)},
cin = {C010 / C060 / B070 / C050},
ddc = {610},
cid = {I:(DE-He78)C010-20160331 / I:(DE-He78)C060-20160331 /
I:(DE-He78)B070-20160331 / I:(DE-He78)C050-20160331},
pnm = {313 - Cancer risk factors and prevention (POF3-313)},
pid = {G:(DE-HGF)POF3-313},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:23912455},
doi = {10.1038/onc.2013.312},
url = {https://inrepo02.dkfz.de/record/119893},
}