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2016 ; 17
(5
): 507-14
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gab.com Text
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Metformin inhibits prostate cancer cell proliferation, migration, and tumor
growth through upregulation of PEDF expression
#MMPMID26987032
Chen X
; Li C
; He T
; Mao J
; Li C
; Lyu J
; Meng QH
Cancer Biol Ther
2016[May]; 17
(5
): 507-14
PMID26987032
show ga
Metformin has been reported to inhibit the growth of various types of cancers,
including prostate cancer. Yet the mode of anti-cancer action of metformin and
the underlying mechanisms remain not fully elucidated. We hypothesized that the
antitumorigenic effects of metformin are mediated through upregulation of pigment
epithelium-derived factor (PEDF) expression in prostate cancer cells. In this
report, metformin treatment significantly inhibited the proliferation and colony
formation of prostate cancer cells, in a dose- and time-dependent manner.
Meanwhile, Metformin markedly suppressed migration and invasion and induced
apoptosis of both LNCaP and PC3 cancer cells. Metformin also reduced PC3 tumor
growth in BALB/c nude mice in vivo. Furthermore, metformin treatment was
associated with higher PEDF expression in both prostate cancer cells and tumor
tissue. Taken together, metformin inhibits prostate cancer cell proliferation,
migration, invasion and tumor growth, and these activities are mediated by
upregulation of PEDF expression. These findings provide a novel insight into the
molecular functions of metformin as an anticancer agent.
|Cell Movement
[MESH]
|Cell Proliferation
[MESH]
|Eye Proteins/*metabolism
[MESH]
|Humans
[MESH]
|Hypoglycemic Agents/pharmacology/*therapeutic use
[MESH]