Article (Scientific journals)
IKBKE-DRIVEN TPL2 AND MEK1 PHOSPHORYLATIONS SUSTAIN CONSTITUTIVE ERK1/2 ACTIVATION IN TUMOR CELLS
Göktuna, Serkan
2022In EXCLI Journal, 21, p. 436 - 453
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Keywords :
Cancer cells; ERK1/2 (MAPK1/2); IKKɛ (IKBKE); MEK1 (MAP2K1); Signal transduction; TPL2 (MAP3K8); Molecular Medicine; Animal Science and Zoology; Pharmacology; Drug Discovery
Abstract :
[en] IKBKE have been associated with numerous cancers. As a result, IKBKE have emerged as potential target for cancer therapy. Accumulating evidence support that IKBKE orchestrate tumor cell survival in cancers. Here we evaluated the possible link between IKBKE and ERK phosphorylation. The effects of IKBKE silencing on MAPK activation in tumor vs. normal cells were evaluated via WB and RT-PCR. Ectopically expressed IKBKE, TPL2 or MEK1 constructs were used to examine the possible interactions among them via co-IP. In vitro kinase assays were performed to understand nature of the observed interactions. In tumors, IKBKE regulates MEK/ERK constitutive activations in vitro and in vivo. IKBKE and TPL2 physically interact and this interaction leads to TPL2 phosphorylation. We describe here a novel regulatory link between IKBKE and constitutive ERK1/2 activation in tumor cells. This new circuitry may be relevant for tumor cell survival in various malignancies.
Disciplines :
Oncology
Biochemistry, biophysics & molecular biology
Author, co-author :
Göktuna, Serkan ;  Université de Liège - ULiège > Unités de recherche interfacultaires > GIGA-Research
Language :
English
Title :
IKBKE-DRIVEN TPL2 AND MEK1 PHOSPHORYLATIONS SUSTAIN CONSTITUTIVE ERK1/2 ACTIVATION IN TUMOR CELLS
Publication date :
03 January 2022
Journal title :
EXCLI Journal
eISSN :
1611-2156
Publisher :
Leibniz Research Centre for Working Environment and Human Factors
Volume :
21
Pages :
436 - 453
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
Studies reported here were supported by F.N.R.S, FLF and WELBIO funds in Belgium and TÜBİTAK ARDEB 116Z349 grant in Turkey.
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since 08 March 2022

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