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@ARTICLE{Varol:301485,
author = {A. Varol and S. M. Klauck$^*$ and S. P. Lees-Miller and T.
Efferth},
title = {{C}omprehensive {T}ranscriptomic {A}nalysis in {W}ild-type
and {ATM} {K}nockout {L}ung {C}ancer {C}ells: {I}nfluence of
{C}isplatin on {O}xidative {S}tress-{I}nduced {S}enescence.},
journal = {Chemico-biological interactions},
volume = {418},
issn = {0009-2797},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {DKFZ-2025-01027},
pages = {111563},
year = {2025},
note = {Volume 418, 5 September 2025, 111563},
abstract = {Genetic mutations and impaired DNA repair mechanisms in
cancer not only facilitate tumor progression but also reduce
the effectiveness of chemotherapeutic agents, particularly
cisplatin. Combination therapy has emerged as a promising
strategy to overcome resistance. Comprehensive
transcriptomic analyses, supported by integrated comparative
bioinformatics and experimental approaches, are essential
for identifying biomarkers and novel therapeutic targets
underlying drug resistance. In this study, we performed
overall survival and mutation analyses, examining 23
double-strand break repair proteins across more than 7,500
tumors spanning 23 distinct cancer types. Our findings
identify ATM (ataxia-telangiectasia mutated) as a key
protein with the highest mutation frequency. Using
CRISPR/Cas9, we investigated the effects of ATM mutations on
signalling pathways that influence the cellular response to
cisplatin. ATM knockout enhanced cisplatin cytotoxicity by
activating alternative cell death pathways, including
oxidative stress-induced senescence and necroptosis.
Microarray analysis revealed a regulatory interplay between
ATM and NRF2 in the activation of oxidative stress-induced
senescence. Specifically, ATM knockoutpromoted senescence by
increasing reactive oxygen species (ROS) accumulation and
downregulating NRF2 expression. To enhance combination
therapy, integrating genetic profiling with advanced tools
such as CRISPR/Cas9 to target oxidative stress-induced
senescence may provide innovative strategies to overcome
drug resistance, thereby advancing personalized cancer
treatment. These approaches lay the foundation for the
development of personalized cancer therapies tailored to the
unique mutational landscape of individual patients, offering
promising prospects for improving treatment outcomes.},
keywords = {Chemotherapy resistance (Other) / Personalized cancer
therapy (Other) / Prognostic biomarkers Signal transduction
(Other) / Survival analysis (Other) / Transcriptomics
(Other)},
cin = {B063},
ddc = {540},
cid = {I:(DE-He78)B063-20160331},
pnm = {312 - Funktionelle und strukturelle Genomforschung
(POF4-312)},
pid = {G:(DE-HGF)POF4-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:40383470},
doi = {10.1016/j.cbi.2025.111563},
url = {https://inrepo02.dkfz.de/record/301485},
}