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2017 ; 8
(23
): 37154-37163
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YAP promotes tumorigenesis and cisplatin resistance in neuroblastoma
#MMPMID28415761
Yang C
; Tan J
; Zhu J
; Wang S
; Wei G
Oncotarget
2017[Jun]; 8
(23
): 37154-37163
PMID28415761
show ga
The transcriptional co-activator Yes-associated protein (YAP) is essential for
Hippo pathway-driven tumorigenesis in various cancers. However, the expression
and function of YAP in neuroblastoma remains elusive. Here, we show that YAP was
highly expressed in Neuroblastoma (NB) and expression levels correlated with
advanced tumor staging. Knockdown of YAP significantly impaired neuroblastoma
proliferation, tumorigenesis, and invasion in vitro. Injection of the YAP
inhibitor, Peptide 17, dramatically prevented neuroblastoma subcutaneous tumor
growth by efficiently downregulating YAP expression in tumors. Additionally, less
proliferative and more apoptotic cells were found in the Peptide 17 treatment
group. Furthermore, YAP inhibition significantly inhibited cisplatin-resistant
neuroblastoma proliferation, tumorigenesis, and invasion in vitro. The
combination of Peptide 17 with low-dose cisplatin efficiently impaired
cisplatin-resistant NB subcutaneous tumor growth, being as effective as high-dose
cisplatin. Notably, the combination therapy caused lesser liver toxicity in mice
compared to the high-dose cisplatin treatment group. Collectively, this work
identifies YAP as a novel regulator of neuroblastoma proliferation,
tumorigenesis, and invasion and indicates that YAP is a potential therapeutic
target for cisplatin-resistant neuroblastoma.
|Adaptor Proteins, Signal Transducing/antagonists &
inhibitors/genetics/*metabolism
[MESH]