Erschienen in:
01.03.2012 | Original Paper
Autocrine epidermal growth factor receptor ligand production and cetuximab response in head and neck squamous cell carcinoma cell lines
verfasst von:
Goro Oshima, Johan Wennerberg, Takashi Yamatodani, Elisabeth Kjellén, Hiroyuki Mineta, Anders Johnsson, Lars Ekblad
Erschienen in:
Journal of Cancer Research and Clinical Oncology
|
Ausgabe 3/2012
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Abstract
Purpose
Predictive strategies for the treatment efficacy of cetuximab are currently not available for head and neck cancer. We investigated the correlation between the expression of epidermal growth factor receptor (EGFR) ligands and EGFR expression, and the growth inhibitory activity of cetuximab in a panel of head and neck squamous cell carcinoma (HNSCC) cell lines.
Methods
The growth inhibiting effect of cetuximab was measured for eight HNSCC cell lines and correlated with the autocrine production of five EGFR ligands as measured by ELISA, and the mRNA expression of two ligands, as measured by quantitative RT-PCR. EGFR expression was assessed by western blot analysis.
Results
There was a good correlation between the expression of four of the EGFR ligands (TGF-α, amphiregulin, epiregulin and epigen) and the growth inhibiting effect of cetuximab. TGF-α had the highest predictive potential but had to be combined with epigen for full prediction. EGFR expression also correlated with cetuximab sensitivity but less clearly.
Conclusions
The results indicate that the expression of several EGFR ligands has to be used to predict sensitivity to cetuximab in HNSCC. This has to be further evaluated in clinical samples.