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@ARTICLE{Njouendou:274358,
author = {A. J. Njouendou and T. Szarvas and A. A. Z. Tiofack and R.
N. Kenfack and P. D. Tonouo and S. N. Ananga and E. H. M. D.
Bell and G. Simo and J. D. Hoheisel$^*$ and J. T. Siveke$^*$
and S. S. Lueong$^*$},
title = {{SOX}2 dosage sustains tumor-promoting inflammation to
drive disease aggressiveness by modulating the {FOSL}2/{IL}6
axis.},
journal = {Molecular cancer},
volume = {22},
number = {1},
issn = {1476-4598},
address = {London},
publisher = {Biomed Central},
reportid = {DKFZ-2023-00560},
pages = {52},
year = {2023},
abstract = {Inflammation is undoubtedly a hallmark of cancer
development. Its maintenance within tumors and the
consequences on disease aggressiveness are insufficiently
understood.Data of 27 tumor entities (about 5000 samples)
were downloaded from the TCGA and GEO databases. Multi-omic
analyses were performed on these and in-house data to
investigate molecular determinants of tumor aggressiveness.
Using molecular loss-of-function data, the mechanistic
underpinnings of inflammation-induced tumor aggressiveness
were addressed. Patient specimens and in vivo disease models
were subsequently used to validate findings.There was
significant association between somatic copy number
alterations (sCNAs) and tumor aggressiveness. SOX2
amplification was the most important feature among novel and
known aggressiveness-associated alterations.
Mechanistically, SOX2 regulates a group of genes, in
particular the AP1 transcription factor FOSL2, to sustain
pro-inflammatory signaling pathways, such as IL6-JAK-STAT3,
TNFA and IL17. FOSL2 was found overexpressed in tumor
sections of specifically aggressive cancers. In consequence,
prolonged inflammation induces immunosuppression and
activates cytidine deamination and thus DNA damage as
evidenced by related mutational signatures in aggressive
tumors. The DNA damage affects tumor suppressor genes such
as TP53, which is the most mutated gene in aggressive tumors
compared to less aggressive ones $(38\%$ vs $14\%),$ thereby
releasing cell cycle control. These results were confirmed
by analyzing tissues from various tumor types and in vivo
studies.Our data demonstrate the implication of SOX2 in
promoting DNA damage and genome instability by sustaining
inflammation via FOSL2/IL6, resulting in tumor
aggressiveness.},
keywords = {FOSL2 (Other) / Gene expression (Other) / IL6 (Other) /
Inflammation (Other) / Mutational signatures (Other) / SOX2
(Other) / Somatic copy number alterations (Other) / Tumor
aggressiveness (Other)},
cin = {B070 / ED01},
ddc = {570},
cid = {I:(DE-He78)B070-20160331 / 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:36932385},
pmc = {pmc:PMC10022277},
doi = {10.1186/s12943-023-01734-w},
url = {https://inrepo02.dkfz.de/record/274358},
}