The effect and mechanism of miR-451 on migration of glioma cell line U251
Zhao Kai, Wang Leilei, Zhu Meng, Yu Shengping, Zhao Pengfei, Zhou Hua, Zhang Chen
Published 2014-05-28
Cite as Chin J Neurosurg, 2014,30(05): 468-472. DOI: 10.3760/cma.j.issn.1001-2346.2014.05.008
Abstract
Objective To investigate the effect of microRNA-451 (miR-451) on migration and its potential molecular mechanism in glioma cell line U251.Method The expression of miR-451 in glioma tissues and brain tissues was identified by qRT-PCR.U251 cells were divided into two groups,miR-451 inhibitor group and control group,for in vitro experiments.Oligonucleotide of miR-451 inhibitor was transfected into human glionblastoma cell line U251.The migration of each group cells was examined by Wound Healing assay and Transwell assay,and the expression of protein of GTP-Rac1 and Rac1 were determined by Western blot respectively.Results The levels of miR-451 expression in glioma tissues were significant lower than brain tissues (P <0.01).Wound Healing assay and Transwell assay discovered that the migration of miR-451 inhibitor group cells was obviously increased compared with control group(P < 0.01).Western blot demonstrated that the expression of GTP-Rac1 was up-regulated in miR-451 inhibitor group cells(P <0.01) and no significantly different was found in the expression of Rac1of each group (P > 0.05).Conclusions miR-451 inhibits U251 cells migration through reducing activation of Rac1.
Key words:
Glioma; miR-451 ; Migration; Invasion
Contributor Information
Zhao Kai
Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin 300052, China
Wang Leilei
Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin 300052, China
Zhu Meng
Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin 300052, China
Yu Shengping
Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin 300052, China
Zhao Pengfei
Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin 300052, China
Zhou Hua
Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin 300052, China
Zhang Chen
Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin 300052, China