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@ARTICLE{Westphal:212545,
author = {D. Westphal and M. Meinhardt and K. Grützmann and L.
Schöne and J. Steininger and L. T. Neuhaus and M. Wiegel
and D. Schrimpf$^*$ and D. E. Aust$^*$ and E. Schröck and
G. B. Baretton$^*$ and S. Beissert and T. A. Juratli and G.
G. Schackert and J. Gravemeyer$^*$ and J. Becker$^*$ and A.
von Deimling$^*$ and C. Koelsche$^*$ and B. Klink and F.
Meier and A. Schulz and M. H. Muders and M. Seifert},
title = {{I}dentification of epigenetically regulated genes
distinguishing intracranial from extracranial melanoma
metastases.},
journal = {The journal of investigative dermatology},
volume = {143},
number = {7},
issn = {0022-202x},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {DKFZ-2023-00230},
pages = {1233-1245.e17},
year = {2023},
note = {2023 Jul;143(7):1233-1245.e17},
abstract = {Despite remarkable advances in treating patients with
metastatic melanoma, management of melanoma brain metastases
remains challenging. Recent evidence suggests that
epigenetic reprogramming is an important mechanism for the
adaptation of melanoma cells to the brain environment. In
this study, methylomes and transcriptomes of a cohort of
matched melanoma metastases were evaluated by integrated
omics data analysis. The identified 38 candidate genes
displayed distinct promoter methylation and corresponding
gene expression changes in intracranial compared to
extracranial metastases. The 11 most promising genes were
validated on protein level in both tumor and surrounding
normal tissue using immunohistochemistry. For 8 of them,
STK10, PDXK, WDR24, CSPP1, NMB, RASL11B, pPRKCZ/PRKCZ,
pGRB10, a significantly different protein expression in
intracranial versus extracranial metastases was confirmed in
accordance with the underlying promoter methylation and gene
expression changes. The observed changes imply a distinct
intracranial phenotype with increased AKT phosphorylation
and higher frequency of proliferating cells. Knockdown of
PRKCZ or GRB10 altered the expression of pAKT and decreased
the viability of a brain-specific melanoma cell line. In
summary, epigenetically regulated cancer-relevant
alterations were identified, that provide insights into the
molecular mechanisms that discriminate brain from other
organ metastases, which could be exploited by targeting the
affected signaling pathways.},
keywords = {Melanoma metastases (Other) / extracranial metastases
(Other) / gene expression (Other) / intracranial metastases
(Other) / promoter methylation (Other)},
cin = {B300 / HD01 / DD01 / ED01},
ddc = {610},
cid = {I:(DE-He78)B300-20160331 / I:(DE-He78)HD01-20160331 /
I:(DE-He78)DD01-20160331 / I:(DE-He78)ED01-20160331},
pnm = {312 - Funktionelle und strukturelle Genomforschung
(POF4-312)},
pid = {G:(DE-HGF)POF4-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:36716920},
doi = {10.1016/j.jid.2023.01.011},
url = {https://inrepo02.dkfz.de/record/212545},
}