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2017 ; 8
(10
): e3155
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MiR-106a-5p inhibits the cell migration and invasion of renal cell carcinoma
through targeting PAK5
#MMPMID29072688
Pan YJ
; Wei LL
; Wu XJ
; Huo FC
; Mou J
; Pei DS
Cell Death Dis
2017[Oct]; 8
(10
): e3155
PMID29072688
show ga
MicroRNA-106a-5p (MiR-106a-5p), a small non-coding RNA, has been reported to be
downregulated in astrocytoma, osteosarcoma and colorectal cancer. However, the
expression levels and biological function in renal cell carcinoma (RCC) have not
been studied yet. In this study, we found that the miR-106a-5p was significantly
downregulated in RCC tissues and cell lines, and that overexpression of
miR-106a-5p led to decreased cell metastasis ability in a xenograft model.
Inhibition of miR-106a-5p in RCC cell lines altered the cell migration, invasion
and wound healing abilities. Mechanistic studies demonstrated that miR-106a-5p
directly bound to the 3'-UTR of the PAK5 mRNA and mediated a decrease in the
protein expression of PAK5. We further proved that PAK5 protein levels were
negatively correlated with the miR-106a-5p expression in both patient samples and
xenograft model. In epigenetics, methylation specific PCR experiments indicated
that the upstream gene promoter of miR-106a-5p was hypermethylated in RCC, which
might be responsible for its downregulation. Our findings suggested that
miR-106a-5p might be a potential gene therapy target for the treatment of RCC
metastasis.