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2018 ; 15
(8
): 832-839
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English Wikipedia
Proscillaridin A induces apoptosis, inhibits STAT3 activation and augments
doxorubicin toxicity in prostate cancer cells
#MMPMID30008594
He Y
; Khan M
; Yang J
; Yao M
; Yu S
; Gao H
Int J Med Sci
2018[]; 15
(8
): 832-839
PMID30008594
show ga
Cardiac glycosides are natural compounds used for the treatment of congestive
heart failure and cardiac arrhythmias. Recently, they have been reported to
exhibit anticancer activity. Proscillaridin A (PSN-A), a cardiac glycoside
constituent of Urginea maritima has been shown to exhibit anticancer activity.
However, the cellular targets and anticancer mechanism of PSN-A in various
cancers including prostate cancer remain largely unexplored. In the present
study, we have shown that PSN-A inhibits proliferation and induces apoptosis in
prostate cancer cells in a dose-dependent manner. Further mechanistic study have
shown that anticancer activity of PSN-A in prostate cancer cells is associated
with ROS generation, Bcl-2 family proteins modulation, mitochondrial membrane
potential disruption and ultimately activation of caspase-3 and cleavage of PARP.
Moreover, we found that PSN-A inhibits JAK2/STAT3 signaling and augments
doxorubicin toxicity in prostate cancer cells. Of note, LNCaP cells were found to
be more sensitive to PSN-A treatment as compared to DU145 cells. Taken together,
the data provided first evidence of the anticancer activity and possible
molecular mechanism of PSN-A in prostate cancer. Further study is needed to
develop PSN-A into a potential lead compound for the treatment of prostate
cancer.