Open Access
ARTICLE
miR-26b Mimic Inhibits Glioma Proliferation In Vitro and In Vivo Suppressing COX-2 Expression
Zheng-Gang Chen*, Chuan-Yi Zheng*, Wang-Qing Cai†, Da-Wei Li*, Fu-Yue Ye*,
Jian Zhou*, Ran Wu*, Kun Yang*
* Department of Neurosurgery, The First Affiliated Hospital of Hainan Medical College,
Haikou, Hainan, P.R. China
† Department of Neurosurgery, The Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University,
Guangzhou, Guangdong, P.R. China
Oncology Research 2019, 27(2), 147-155. https://doi.org/10.3727/096504017X15021536183517
Abstract
Glioma is the most common malignant tumor of the nervous system. Studies have shown the microRNA-26b
(miR-26b)/cyclooxygenase-2 (COX-2) axis in the development and progression in many tumor cells. Our study
aims to investigate the effect and mechanism of the miR-26b/COX-2 axis in glioma. Decreased expression of
miR-26b with increased levels of COX-2 was found in glioma tissues compared with matched normal tissues.
A strong negative correlation was observed between the level of miR-26b and COX-2 in 30 glioma tissues. The
miR-26b was then overexpressed by transfecting a miR-26b mimic into U-373 cells. The invasive cell number
and wound closing rate were reduced in U-373 cells transfected with miR-26b mimic. In addition, COX-2
siRNA enhanced the effect of miR-26b mimic in suppressing the expression of p-ERK1 and p-JNK. Finally,
the in vivo experiment revealed that miR-26b mimic transfection strongly reduced the tumor growth, tumor
volume, and expression of matrix metalloproteinase-2 (MMP-2) and MMP-9. Taken together, our research
indicated a miR-26b/COX-2/ERK/JNK axis in regulating the motility of glioma in vitro and in vivo, providing
a new sight for the treatment of glioma.
Keywords
Cite This Article
Chen, Z., Zheng, C., Cai, W., Li, D., Ye, F. et al. (2019). miR-26b Mimic Inhibits Glioma Proliferation In Vitro and In Vivo Suppressing COX-2 Expression.
Oncology Research, 27(2), 147–155. https://doi.org/10.3727/096504017X15021536183517