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@ARTICLE{Buhl:143210,
author = {J. L. Buhl$^*$ and F. Selt$^*$ and T. Hielscher$^*$ and R.
Guiho and J. Ecker$^*$ and F. Sahm$^*$ and J. Ridinger$^*$
and D. Riehl$^*$ and D. Usta$^*$ and B. Ismer$^*$ and A. C.
Sommerkamp$^*$ and J. P. Martinez-Barbera and A. K.
Wefers$^*$ and M. Remke$^*$ and D. Picard$^*$ and S.
Pusch$^*$ and J. Gronych$^*$ and I. Oehme$^*$ and C. M. van
Tilburg$^*$ and M. Kool$^*$ and D. Kuhn$^*$ and D.
Capper$^*$ and A. von Deimling$^*$ and M. U. Schuhmann and
C. Herold-Mende and A. Korshunov$^*$ and T. Brummer$^*$ and
S. Pfister$^*$ and D. Jones$^*$ and O. Witt$^*$ and T.
Milde$^*$},
title = {{T}he {S}enescence-associated {S}ecretory {P}henotype
{M}ediates {O}ncogene-induced {S}enescence in {P}ediatric
{P}ilocytic {A}strocytoma.},
journal = {Clinical cancer research},
volume = {25},
number = {6},
issn = {1557-3265},
address = {Philadelphia, Pa. [u.a.]},
publisher = {AACR},
reportid = {DKFZ-2019-00809},
pages = {1851 - 1866},
year = {2019},
abstract = {Pilocytic astrocytoma is the most common childhood brain
tumor, characterized by constitutive MAPK activation. MAPK
signaling induces oncogene-induced senescence (OIS), which
may cause unpredictable growth behavior of pilocytic
astrocytomas. The senescence-associated secretory phenotype
(SASP) has been shown to regulate OIS, but its role in
pilocytic astrocytoma remains unknown.Experimental Design:
The patient-derived pilocytic astrocytoma cell culture
model, DKFZ-BT66, was used to demonstrate presence of the
SASP and analyze its impact on OIS in pilocytic astrocytoma.
The model allows for doxycycline-inducible switching between
proliferation and OIS. Both states were studied using gene
expression profiling (GEP), Western blot, ELISA, and cell
viability testing. Primary pilocytic astrocytoma tumors were
analyzed by GEP and multiplex assay.SASP factors were
upregulated in primary human and murine pilocytic
astrocytoma and during OIS in DKFZ-BT66 cells. Conditioned
medium induced growth arrest of proliferating pilocytic
astrocytoma cells. The SASP factors IL1B and IL6 were
upregulated in primary pilocytic astrocytoma, and both
pathways were regulated during OIS in DKFZ-BT66. Stimulation
with rIL1B but not rIL6 reduced growth of DKFZ-BT66 cells
and induced the SASP. Anti-inflammatory treatment with
dexamethasone induced regrowth of senescent cells and
inhibited the SASP. Senescent DKFZ-BT66 cells responded to
senolytic BCL2 inhibitors. High IL1B and SASP expression in
pilocytic astrocytoma tumors was associated with favorable
progression-free survival.We provide evidence for the SASP
regulating OIS in pediatric pilocytic astrocytoma, with IL1B
as a relevant mediator. SASP expression could enable
prediction of progression in patients with pilocytic
astrocytoma. Further investigation of the SASP driving the
unpredictable growth of pilocytic astrocytomas, and its
possible therapeutic application, is warranted.},
cin = {B310 / C060 / B300 / B062 / L401 / B060 / B360 / L101 /
L601 / L201},
ddc = {610},
cid = {I:(DE-He78)B310-20160331 / I:(DE-He78)C060-20160331 /
I:(DE-He78)B300-20160331 / I:(DE-He78)B062-20160331 /
I:(DE-He78)L401-20160331 / I:(DE-He78)B060-20160331 /
I:(DE-He78)B360-20160331 / I:(DE-He78)L101-20160331 /
I:(DE-He78)L601-20160331 / I:(DE-He78)L201-20160331},
pnm = {312 - Functional and structural genomics (POF3-312)},
pid = {G:(DE-HGF)POF3-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30530705},
doi = {10.1158/1078-0432.CCR-18-1965},
url = {https://inrepo02.dkfz.de/record/143210},
}