Journal article
EGFR inhibition induces proinflammatory cytokines via NOX4 in HNSCC
Molecular cancer research, Vol.11(12), pp.1574-1584
12/2013
DOI: 10.1158/1541-7786.MCR-13-0187
PMCID: PMC3869882
PMID: 24048704
Abstract
Chronic inflammation plays a fundamental role in tumor promotion, migration, and invasion. With the use of microarray profiling, a profound increase was observed for those transcripts involved in proinflammatory signaling in epidermal growth factor receptor (EGFR) inhibitor-treated head and neck squamous cell carcinoma (HNSCC) cells as compared with their respective controls. As such, it was hypothesized that EGFR inhibitor efficacy is offset by the proinflammatory response that these therapeutics conjure in HNSCC. Systematic evaluation of the clinical EGFR inhibitors-erlotinib, cetuximab, lapatinib, and panitumumab-revealed increased secretion of proinflammatory cytokines such as interleukins (IL-2, IL-4, IL-6, IL-8), granulocyte-macrophage colony-stimulating factor, TNF-α, and IFN-γ. Mechanistic focus on IL-6 revealed that erlotinib induced a time-dependent increase in IL-6 mRNA and protein expression. Importantly, exogenous IL-6 protected HNSCC cells from erlotinib-induced cytotoxicity, whereas tocilizumab, an IL-6 receptor antagonist, sensitized cells to erlotinib in vitro and in vivo. Inhibitors of NF-κB, p38, and JNK suppressed erlotinib-induced IL-6 expression, suggesting critical roles for NF-κB and MAPK in IL-6 regulation. Furthermore, knockdown of NADPH oxidase 4 (NOX4) suppressed erlotinib-induced proinflammatory cytokine expression. Taken together, these results demonstrate that clinical EGFR inhibitors induce the expression of proinflammatory cytokines via NOX4.
The antitumor activity of EGFR inhibitors is reduced by activation of NOX4-mediated proinflammatory pathways in HNSCC.
Details
- Title: Subtitle
- EGFR inhibition induces proinflammatory cytokines via NOX4 in HNSCC
- Creators
- Elise V M Fletcher - Department of Pathology, 1161 Medical Laboratories, University of Iowa, Iowa City, IA 52242. andrean-simons@uiowa.eduLaurie Love-HomanArya SobhakumariCharlotte R FeddersenAdam T KochApollina GoelAndrean L Simons
- Resource Type
- Journal article
- Publication Details
- Molecular cancer research, Vol.11(12), pp.1574-1584
- DOI
- 10.1158/1541-7786.MCR-13-0187
- PMID
- 24048704
- PMCID
- PMC3869882
- NLM abbreviation
- Mol Cancer Res
- ISSN
- 1541-7786
- eISSN
- 1557-3125
- Publisher
- United States
- Grant note
- P30 ES005605 / NIEHS NIH HHS K01CA134941 / NCI NIH HHS T32 CA078586 / NCI NIH HHS R01 CA127958 / NCI NIH HHS R01CA127958 / NCI NIH HHS T32 GM007337 / NIGMS NIH HHS K01 CA134941 / NCI NIH HHS P30 CA086862 / NCI NIH HHS
- Language
- English
- Date published
- 12/2013
- Academic Unit
- Oral Pathology, Radiology and Medicine; Pathology; Pharmaceutical Sciences and Experimental Therapeutics; Radiation Oncology
- Record Identifier
- 9984047862502771
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