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@ARTICLE{Costa:302878,
author = {A. L. Costa and D. Doncevic and Y. Wu$^*$ and L. Yang and
K. H. Man$^*$ and A.-S. Spreng$^*$ and H. Winter and M.
Fletcher$^*$ and B. Radlwimmer$^*$ and C. Herrmann},
title = {{A} new {IDH}-independent hypermethylation phenotype is
associated with astrocyte-like cell state in glioblastoma.},
journal = {Genome biology},
volume = {26},
number = {1},
issn = {1465-6906},
address = {London},
publisher = {BioMed Central},
reportid = {DKFZ-2025-01418},
pages = {192},
year = {2025},
abstract = {DNA methylation plays a crucial role in cancer development
and progression and has been linked to genetically and
clinically distinct tumor classes, including IDH-mutated and
IDH-wildtype adult-type diffuse gliomas. Here, we identify a
CpG-island methylator phenotype (CIMP) that characterizes
the receptor tyrosine kinase 2 (RTK2) subtype of
IDH-wildtype glioblastoma.This RTK2-CIMP affects genomic
locations and cell functions distinct from those of IDH
mutation-associated IDH-CIMP and suppresses the expression
of its target genes. The RTK2-CIMP-region chromatin is
characterized by a combination of repressive and activating
marks, including polycomb-associated H3K27me3 and
enhancer-associated H3K4me1, consistent with DNA
methylation-mediated silencing of genes with bivalent-state
promoters in neural progenitor cells. Functionally,
RTK2-CIMP affects neuronal lineage genes and is
significantly associated with astrocyte-like glioblastoma,
suggesting that RTK2-CIMP is an epigenetic signature of the
astrocyte-like cell state. Furthermore, we demonstrate that
RTK2-CIMP can be induced by genetic manipulation in
glioblastoma cells.Our results suggest that RTK2-CIMP is a
key contributor to cell-state plasticity in glioblastoma.},
keywords = {Glioblastoma: genetics / Glioblastoma: pathology /
Glioblastoma: metabolism / Humans / DNA Methylation /
Isocitrate Dehydrogenase: genetics / Isocitrate
Dehydrogenase: metabolism / Astrocytes: metabolism /
Astrocytes: pathology / Phenotype / Cell Line, Tumor / CpG
Islands / Epigenesis, Genetic / Gene Expression Regulation,
Neoplastic / Brain Neoplasms: genetics / Brain Neoplasms:
pathology / Isocitrate Dehydrogenase (NLM Chemicals)},
cin = {B060},
ddc = {570},
cid = {I:(DE-He78)B060-20160331},
pnm = {312 - Funktionelle und strukturelle Genomforschung
(POF4-312)},
pid = {G:(DE-HGF)POF4-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:40611337},
pmc = {pmc:PMC12225510},
doi = {10.1186/s13059-025-03670-y},
url = {https://inrepo02.dkfz.de/record/302878},
}