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2015 ; 6
(33
): 34288-99
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
Cetuximab promotes epithelial to mesenchymal transition and cancer associated
fibroblasts in patients with head and neck cancer
#MMPMID26437222
Schmitz S
; Bindea G
; Albu RI
; Mlecnik B
; Machiels JP
Oncotarget
2015[Oct]; 6
(33
): 34288-99
PMID26437222
show ga
PURPOSE: To investigate if cetuximab induces epithelial to mesenchymal transition
(EMT) and activation of cancer associated fibroblast (CAF) in the tumors of
patients with squamous cell carcinoma of the head and neck (SCCHN). METHODS:
Cetuximab was administered for two weeks prior to surgery to 20 treatment-naïve
patients. Five untreated patients were included as controls. Tumor biopsies were
performed at baseline and before surgery. Gene expression profiles and
quantitative real-time PCR (qRT-PCR) analysis of the pre-and post-treatment
biopsies were compared. To further investigate EMT and CAF, correlations between
previously described EMT and CAF markers and our microarray data set were
calculated. RESULTS: Gene expression profile analyses and qRT-PCR showed that
some of the genes modified by cetuximab were related to CAFs and EMT (ZNF521,
CXCL12, ASPN, OLFML3, OLFM1, TWIST1, LEF1, ZEB1, FAP). We identified 2 patient
clusters with different EMT and CAF characteristics. Whereas one cluster showed
clear upregulation of expression of genes implicated in CAF and EMT including
markers of embryologic pathways like NOTCH and Wnt, the other did not.
CONCLUSIONS: Even if EMT and CAFs are implicated in cetuximab resistance in
pre-clinical models, we demonstrate for the first time that these molecular
processes may occur clinically early on.