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2017 ; 14
(6
): 6379-6386
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MicroRNA-497 inhibits tumor growth through targeting insulin receptor substrate 1
in colorectal cancer
#MMPMID29163678
Xu Y
; Chen J
; Gao C
; Zhu D
; Xu X
; Wu C
; Jiang J
Oncol Lett
2017[Dec]; 14
(6
): 6379-6386
PMID29163678
show ga
MicroRNAs (miRNAs) have been demonstrated to serve an important role in diverse
biological processes and cancer progression. Downregulation of microRNA-497
(miR-497) has been observed in human colorectal cancer (CRC) tissues, but the
function of miR-497 in CRC has not been well investigated. In the present study,
it was demonstrated that expression of miR-497 was significantly downregulated in
human CRC tissues compared to adjacent normal tissues. Enforced expression of
miR-497 inhibited proliferation, migration and invasion abilities of CRC cell
lines SW1116 and SW480. Furthermore, overexpression of miR-497 inhibited
phosphoinositide 3-kinase/AKT and mitogen-activated protein kinase/extracellular
signal-regulated kinase signaling by targeting insulin receptor substrate 1
(IRS1). In human clinical specimens, IRS1 was inversely correlated with miR-497
in CRC tissues. Collectively, the results of the present study demonstrate that
miR-497 is a tumor suppressor miRNA and indicate its potential application for
the treatment of human CRC in the future.