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2017 ; 8
(33
): 54838-54857
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English Wikipedia
Synergistic inhibition of colon cancer growth by the combination of methylglyoxal
and silencing of glyoxalase I mediated by the STAT1 pathway
#MMPMID28903386
Chen Y
; Fang L
; Li G
; Zhang J
; Li C
; Ma M
; Guan C
; Bai F
; Lyu J
; Meng QH
Oncotarget
2017[Aug]; 8
(33
): 54838-54857
PMID28903386
show ga
Methylglyoxal (MG), an extremely reactive glucose metabolite, exhibits antitumor
activity. Glyoxalase I (GLOI), which catalyzes MG metabolism, is associated with
the progression of human malignancies. While the roles of MG or GLOI have been
demonstrated in some types of cancer, their effects in colon cancer and the
mechanisms underlying these effects remain largely unknown. For this study, MG
and GLOI levels were manipulated in colon cancer cells and the effects on their
viability, proliferation, apoptosis, migration, and invasion in vitro were
quantified by Cell Counting Kit-8, colony formation assay, flow cytometry, and
transwell assays. The expression levels of STAT1 pathway-associated proteins and
mRNAs in these cells were quantified by western blot and qRT-PCR, respectively.
The antitumor effects of MG and silencing of GLOI were investigated in vivo in a
SW620 colon cancer xenograft model in BALB/c nude mice. Our findings demonstrate
that MG in combination with silencing of GLOI synergistically inhibited the
cancer cells' proliferation, colony formation, migration, and invasion and
induced apoptosis in vitro compared with the controls. Furthermore, these
treatments up-regulated STAT1 and Bax while down-regulating Bcl-2 in vitro. MG
treatment alone or in combination with silencing of GLOI also reduced the growth
of the SW620 tumors in mice by up-regulation of STAT1 and Bax and down-regulation
of Bcl-2. Taken together, our findings suggest that MG in combination with
silencing of GLOI merits further evaluation as a targeted therapeutic strategy
for colon cancer.