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2017 ; 7
(ä): 44688
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MicroRNA-27a-3p Modulates the Wnt/?-Catenin Signaling Pathway to Promote
Epithelial-Mesenchymal Transition in Oral Squamous Carcinoma Stem Cells by
Targeting SFRP1
#MMPMID28425477
Qiao B
; He BX
; Cai JH
; Tao Q
; King-Yin Lam A
Sci Rep
2017[Apr]; 7
(ä): 44688
PMID28425477
show ga
This study aimed to elucidate how microRNA27a-3p (miR-27a-3p) modulates the
Wnt/?-catenin signaling pathway to promote the epithelial-mesenchymal transition
(EMT) in oral squamous carcinoma stem cells (OSCSCs) by targeting secreted
frizzled-related protein 1 (SFRP1). Flow cytometry was used to sort OSCSCs from
the SCC-9 and Tca8113 cell lines. The OSCSCs were randomly assigned into the
miR-27a-3p inhibitors group, the miR-27a-3p inhibitors-NC group, the si-SFRP1
group, the si-SFRP1?+?miR-27a-3p inhibitors group and the blank group. A
luciferase reporter, immunofluorescence and Transwell assays were performed to
detect luciferase activity, SFRP1, and cell migration and invasion, respectively.
The mRNA expression of miR-27a-3p, SFRP1 and EMT markers (E-cadherin, N-cadherin,
vimentin and ZEB1) were detected using qRT-PCR. The protein expression of SFRP1,
EMT markers and the proteins of the Wnt/?-catenin signaling pathway was detected
by Western blotting. OSCSCs showed up-regulated miR-27a-3p, Wnt/?-catenin
signaling pathway-related proteins, vimentin, N-cadherin and ZEB1 and
down-regulated SFRP1 and E-cadherin. MiR-27a-3p targeted SFRP1. Down-regulated
miR-27a-3p resulted in increased E-cadherin and SFRP1 but decreased vimentin,
N-cadherin, ZEB1, the Wnt/?-catenin signaling pathway-related proteins, and
invasive and migratory cells. Silenced SFRP1 reversed this effect. We found that
miR-27a-3p modulated the Wnt/?-catenin signaling pathway to promote EMT in OSCSCs
by down-regulating SFRP1.
|*Epithelial-Mesenchymal Transition
[MESH]
|*Gene Expression Regulation, Neoplastic
[MESH]
|Antigens, CD/genetics/metabolism
[MESH]
|Cadherins/genetics/metabolism
[MESH]
|Cell Line, Tumor
[MESH]
|Cell Movement
[MESH]
|Epithelial Cells/metabolism/pathology
[MESH]
|Flow Cytometry
[MESH]
|Genes, Reporter
[MESH]
|Humans
[MESH]
|Intercellular Signaling Peptides and Proteins/genetics/metabolism
[MESH]