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2017 ; 18
(9
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Dual Strands of Pre-miR-149 Inhibit Cancer Cell Migration and Invasion through
Targeting FOXM1 in Renal Cell Carcinoma
#MMPMID28902136
Okato A
; Arai T
; Yamada Y
; Sugawara S
; Koshizuka K
; Fujimura L
; Kurozumi A
; Kato M
; Kojima S
; Naya Y
; Ichikawa T
; Seki N
Int J Mol Sci
2017[Sep]; 18
(9
): ä PMID28902136
show ga
Our recent studies revealed that dual strands of certain pre-microRNAs, e.g.,
pre-miR-144, pre-miR-145, and pre-miR-150, act as antitumor microRNAs (miRNAs) in
several cancers. The involvement of passenger strands of miRNAs in cancer
pathogenesis is a novel concept in miRNA research. The analysis of a miRNA
expression signature in clear cell renal cell carcinoma (ccRCC) has revealed that
the guide strand of pre-miR-149 is significantly downregulated in cancer tissues.
The aims of this study were to investigate the functional significance of
miR-149's guide strand (miR-149-5p) and passenger strand (miR-149-3p), and to
identify the oncogenic genes regulated by these miRNAs in ccRCC cells. The
ectopic expression of these miRNAs significantly inhibited cancer cell migration
and invasion in ccRCC cells. Forkhead box protein M1 (FOXM1) was directly
regulated by miR-149-5p and miR-149-3p in ccRCC cells. Knockdown studies using
si-FOXM1 showed that the expression of FOXM1 enhanced RCC cell aggressiveness.
Interestingly, the analysis of a large number of patients in the The Cancer
Genome Atlas (TCGA) database (n = 260) demonstrated that patients with high FOXM1
expression had significantly shorter survival than did those with low FOXM1
expression (p = 1.5 × 10??). Taken together, dual strands of pre-miR-149
(miR-149-5p and miR-149-3p) acted as antitumor miRNAs through the targeting of
FOXM1 in ccRCC cells.