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@ARTICLE{Paramasivam:143626,
author = {N. Paramasivam$^*$ and D. Hübschmann$^*$ and U. H.
Toprak$^*$ and N. Ishaque$^*$ and M. Neidert and D.
Schrimpf$^*$ and D. Stichel$^*$ and D. Reuss$^*$ and P.
Sievers$^*$ and A. Reinhardt$^*$ and A. K. Wefers$^*$ and D.
T. W. Jones$^*$ and Z. Gu$^*$ and J. Werner$^*$ and S.
Uhrig$^*$ and H.-G. Wirsching and M. Schick$^*$ and M.
Bewerunge-Hudler$^*$ and K. Beck$^*$ and S. Brehmer and S.
Urbschat and M. Seiz-Rosenhagen and D. Hänggi and C.
Herold-Mende and R. Ketter and R. Eils$^*$ and Z. Ram and S.
M. Pfister$^*$ and W. Wick$^*$ and M. Weller and R.
Grossmann and A. von Deimling$^*$ and M. Schlesner$^*$ and
F. Sahm$^*$},
title = {{M}utational patterns and regulatory networks in epigenetic
subgroups of meningioma.},
journal = {Acta neuropathologica},
volume = {138},
number = {2},
issn = {1432-0533},
address = {Heidelberg},
publisher = {Springer},
reportid = {DKFZ-2019-01203},
pages = {295-308},
year = {2019},
abstract = {DNA methylation patterns delineate clinically relevant
subgroups of meningioma. We previously established the six
meningioma methylation classes (MC) benign 1-3, intermediate
A and B, and malignant. Here, we set out to identify
subgroup-specific mutational patterns and gene regulation.
Whole genome sequencing was performed on 62 samples across
all MCs and WHO grades from 62 patients with matched blood
control, including 40 sporadic meningiomas and 22
meningiomas arising after radiation (Mrad). RNA sequencing
was added for 18 of these cases and
chromatin-immunoprecipitation for histone H3 lysine 27
acetylation (H3K27ac) followed by sequencing (ChIP-seq) for
16 samples. Besides the known mutations in meningioma,
structural variants were found as the mechanism of NF2
inactivation in a small subset $(5\%)$ of sporadic
meningiomas, similar to previous reports for Mrad.
Aberrations of DMD were found to be enriched in MCs with NF2
mutations, and DMD was among the most differentially
upregulated genes in NF2 mutant compared to NF2 wild-type
cases. The mutational signature AC3, which has been
associated with defects in homologous recombination repair
(HRR), was detected in both sporadic meningioma and Mrad,
but widely distributed across the genome in sporadic cases
and enriched near genomic breakpoints in Mrad. Compared to
the other MCs, the number of single nucleotide variants
matching the AC3 pattern was significantly higher in the
malignant MC, which also exhibited higher genomic
instability, determined by the numbers of both large
segments affected by copy number alterations and breakpoints
between large segments. ChIP-seq analysis for H3K27ac
revealed a specific activation of genes regulated by the
transcription factor FOXM1 in the malignant MC. This
analysis also revealed a super enhancer near the HOXD gene
cluster in this MC, which, together with general
upregulation of HOX genes in the malignant MC, indicates a
role of HOX genes in meningioma aggressiveness. This data
elucidates the biological mechanisms rendering different
epigenetic subgroups of meningiomas, and suggests leveraging
HRR as a novel therapeutic target.},
cin = {B080 / A010 / B300 / B360 / B330 / W110 / B062 / B320 /
B240 / B087},
ddc = {610},
cid = {I:(DE-He78)B080-20160331 / I:(DE-He78)A010-20160331 /
I:(DE-He78)B300-20160331 / I:(DE-He78)B360-20160331 /
I:(DE-He78)B330-20160331 / I:(DE-He78)W110-20160331 /
I:(DE-He78)B062-20160331 / I:(DE-He78)B320-20160331 /
I:(DE-He78)B240-20160331 / I:(DE-He78)B087-20160331},
pnm = {312 - Functional and structural genomics (POF3-312)},
pid = {G:(DE-HGF)POF3-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:31069492},
doi = {10.1007/s00401-019-02008-w},
url = {https://inrepo02.dkfz.de/record/143626},
}