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2017 ; 117
(8
): 1128-1138
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Nintedanib selectively inhibits the activation and tumour-promoting effects of
fibroblasts from lung adenocarcinoma patients
#MMPMID28898237
Gabasa M
; Ikemori R
; Hilberg F
; Reguart N
; Alcaraz J
Br J Cancer
2017[Oct]; 117
(8
): 1128-1138
PMID28898237
show ga
BACKGROUND: Nintedanib is a clinically approved multikinase receptor inhibitor to
treat non-small cell lung cancer with adenocarcinoma (ADC) histology in
combination with docetaxel, based on the clinical benefits reported on ADC but
not on squamous cell carcinoma (SCC), which are the two most common histologic
lung cancer subtypes. METHODS: We examined the potential role of
tumour-associated fibroblasts (TAFs) in the differential effects of nintedanib in
ADC and SCC. Because TAFs are largely quiescent and activated in histologic
sections, we focused on the antifibrotic effects of nintedanib on TAFs stimulated
with the potent fibroblast activator TGF-?1, which is upregulated in lung cancer.
RESULTS: Nintedanib dose-dependently inhibited the TGF-?1-induced expression of a
panel of pro-fibrotic activation markers in both ADC-TAFs and control fibroblasts
derived from uninvolved lung parenchyma, whereas such inhibition was very modest
in SCC-TAFs. Remarkably, nintedanib abrogated the stimulation of growth and
invasion in a panel of carcinoma cell lines induced by secreted factors from
activated TAFs in ADC but not SCC, thereby supporting that TGF-? signalling and
aberrant TAF-carcinoma cross-talk is regulated by different mechanisms in ADC and
SCC. CONCLUSIONS: These results reveal that nintedanib is an effective inhibitor
of fibrosis and its associated tumour-promoting effects in ADC, and that the poor
antifibrotic response of SCC-TAFs to nintedanib may contribute to the
differential clinical benefit observed in both subtypes. Our findings also
support that preclinical models based on carcinoma-TAF interactions may help
defining the mechanisms of the poor antifibrotic response of SCC-TAFs to
nintedanib and testing new combined therapies to further expand the therapeutic
effects of this drug in solid tumours.
|Adenocarcinoma of Lung
[MESH]
|Adenocarcinoma/drug therapy/*pathology
[MESH]
|Antineoplastic Agents/*pharmacology
[MESH]
|Antineoplastic Combined Chemotherapy Protocols/therapeutic use
[MESH]