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@ARTICLE{Selt:181244,
author = {F. Selt$^*$ and R. Sigaud$^*$ and G. Valinciute$^*$ and P.
Sievers$^*$ and J. Zaman$^*$ and C. Alco and S. Schmid$^*$
and H. Peterziel$^*$ and J. W. Tsai and R. Guiho and J. P.
Martínez-Barbera and S. Pusch$^*$ and J. Deng and Y. Zhai
and C. M. van Tilburg$^*$ and M. U. Schuhman and A. E. L.
Damaty and P. Bandopadhayay and C. Herold-Mende and A. von
Deimling$^*$ and S. Pfister$^*$ and J. Montero and D.
Capper$^*$ and I. Oehme$^*$ and F. Sahm$^*$ and D. Jones$^*$
and O. Witt$^*$ and T. Milde$^*$},
title = {{BH}3 mimetics targeting {BCL}-{XL} impact the senescent
compartment of pilocytic astrocytoma.},
journal = {Neuro-Oncology},
volume = {25},
number = {4},
issn = {1522-8517},
address = {Oxford},
publisher = {Oxford Univ. Press},
reportid = {DKFZ-2022-01890},
pages = {735-747},
year = {2023},
note = {#EA:B310#LA:B310# / 2023 Apr 6;25(4):735-747},
abstract = {Pilocytic astrocytoma (PA) is the most common pediatric
brain tumor and a mitogen-activated protein kinase
(MAPK)-driven disease. Oncogenic MAPK-signaling drives the
majority of cells into oncogene-induced senescence (OIS).
While OIS induces resistance to anti-proliferative
therapies, it represents a potential vulnerability
exploitable by senolytic agents.We established new
patient-derived PA cell lines that preserve molecular
features of the primary tumors and can be studied in OIS and
proliferation depending on expression ore repression of the
SV40 large T antigen. We determined expression of
anti-apoptotic BCL-2 members in these models and primary PA.
Dependence of senescent PA cells on anti-apoptotic BCL-2
members was investigated using a comprehensive set of
BH3-mimetics.Senescent PA cells upregulate BCL-XL upon
senescence induction and show dependency on BCL-XL for
survival. BH3 mimetics with high affinity for BCL-XL
(BCL-XLi) reduce metabolic activity and induce mitochondrial
apoptosis in senescent PA cells at nano-molar
concentrations. In contrast, BH3 mimetics without BCL-XLi
activity, conventional chemotherapy and MEK inhibitors show
no effect.Our data demonstrates that BCL-XL is critical for
survival of senescent PA tumor cells and provides
proof-of-principle for the use of clinically available
BCL-XL-dependent senolytics.},
keywords = {BCL-XL (Other) / BH3 mimetics (Other) / oncogene-induced
senescence (Other) / pilocytic astrocytoma (Other)},
cin = {B310 / HD01 / B300 / BE01 / B062 / B360},
ddc = {610},
cid = {I:(DE-He78)B310-20160331 / I:(DE-He78)HD01-20160331 /
I:(DE-He78)B300-20160331 / I:(DE-He78)BE01-20160331 /
I:(DE-He78)B062-20160331 / I:(DE-He78)B360-20160331},
pnm = {312 - Funktionelle und strukturelle Genomforschung
(POF4-312)},
pid = {G:(DE-HGF)POF4-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:35977048},
doi = {10.1093/neuonc/noac199},
url = {https://inrepo02.dkfz.de/record/181244},
}