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2017 ; 14
(3
): 3437-3444
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Notch 1 is a valuable therapeutic target against cell survival and proliferation
in clear cell renal cell carcinoma
#MMPMID28927098
Zhuang Z
; Lin J
; Huang Y
; Lin T
; Zheng Z
; Ma X
Oncol Lett
2017[Sep]; 14
(3
): 3437-3444
PMID28927098
show ga
Notch 1 is a key component of the Notch pathway, which performs a crucial role in
clear cell renal cell carcinoma (CCRCC) development. The present study aimed to
investigate whether Notch 1 could serve as a potential target for CCRCC
treatment. Firstly, an association analysis was performed using 52 CCRCC cases
and 30 normal controls. The results indicated that Notch 1 protein expression in
renal tissues was closely associated with the incidence of CCRCC. In addition,
higher Notch 1 expression in CCRCC tissues was positively associated with higher
tumor-node-metastasis stage and Fuhrman grade, in addition to larger tumor size.
Subsequently, an in vitro study was conducted to examine the biological functions
of Notch 1 in CCRCC 786-O cells through inhibiting the Notch 1 expression with
Notch 1-specific small interfering RNA (siRNA). As a result, the inhibition of
Notch 1 expression by increasing concentrations of Notch 1-specific siRNA
dose-dependently decreased cell proliferation and increased cell apoptosis in
786-O cells. Furthermore, B-cell lymphoma-2 and procaspase-3 expression exhibited
a dose-dependent decrease accompanied with a dose-dependent inactivation of the
Akt/mammalian target of rapamycin (mTOR) signaling pathway in Notch 1
siRNA-treated 786-O cells. These findings demonstrated that Notch 1 was
associated with CCRCC carcinogenesis and progression, the underlying mechanism of
which was that Notch 1 acted as an activator for cell proliferation and a
suppressor for cell apoptosis through the Akt/mTOR signaling-dependent pathway in
CCRCC. In conclusion, the present study confirmed that Notch 1 is a valuable
target against cell survival and proliferation in CCRCC treatment.