title: MicroRNA-27b inhibits Spry2 expression and promotes cell invasion in glioma U251 cells.
abstract: MicroRNA (miR)-27b has been reported to participate in glioma. However, a detailed role of miR-27b and the underlying mechanism remain largely unknown. The present study found that the expression of miR-27b was significantly increased in glioma tissues compared with normal adjacent tissues. In addition, miR-27b was also upregulated in the U87, U251 and SHG44 glioma cell lines compared with normal human astrocytes. Sprouty homolog 2 (Spry2), which has been reported to be associated with invasive glioma, was identified as a novel target of miR-27b in U251 glioma cells, and the protein expression of Spry2 was negatively regulated by miR-27b in U251 cells. Additionally, inhibition of miR-27b and upregulation of Spry2 suppressed glioma cell invasion, while downregulation of Spry2 reversed the suppressive effect of miR-27b inhibition on glioma cell invasion. These data suggest that miR-27b may promote glioma cell invasion through direct inhibition of Spry2 expression. The data also suggest that miR-27b may become a promising molecular target for inhibiting the invasion and metastasis of glioma.
authors: Department of Neurosurgery, Nanhai Hospital of Southern Medical University, Foshan, Guangdong 528200, P.R. China.
authors: Chenghui
authors: C
authors: Liu
authors: Department of Neurosurgery, Nanhai Hospital of Southern Medical University, Foshan, Guangdong 528200, P.R. China.
authors: Shixing
authors: S
authors: Liang
authors: Department of Neurosurgery, Nanhai Hospital of Southern Medical University, Foshan, Guangdong 528200, P.R. China.
authors: Shenghui
authors: S
authors: Xiao
authors: Department of Neurosurgery, Nanhai Hospital of Southern Medical University, Foshan, Guangdong 528200, P.R. China.
authors: Qiming
authors: Q
authors: Lin
authors: Department of Neurosurgery, Nanhai Hospital of Southern Medical University, Foshan, Guangdong 528200, P.R. China.
authors: Xu
authors: X
authors: Chen
authors: Department of Neurosurgery, Nanhai Hospital of Southern Medical University, Foshan, Guangdong 528200, P.R. China.
authors: Yi
authors: Y
authors: Wu
authors: Department of Neurosurgery, Nanhai Hospital of Southern Medical University, Foshan, Guangdong 528200, P.R. China.
authors: Jian
authors: J
authors: Fu
keywords: glioma; invasion; microRNA-27b; sprouty homolog 2