MiR-9 Promotes Apoptosis Via Suppressing SMC1A Expression in GBM Cell Lines.

Authors :: Zu Y
Zhu Z
Lin M
Xu D
Liang Y
Wang Y
Qiao Z
Cao T
Yang D
Gao L
Jin P
Zhang P
Fu J
Zheng J
Source :: Current chemical genomics and translational medicine [Curr Chem Genom Transl Med] 2017 Jul 31; Vol. 11, pp. 31-40. Date of Electronic Publication: 2017 Jul 31 (Print Publication: 2017).
Publication Year :: 2017
Abstract: Objective: Glioblastomas multiforme (GBM) is the most malignant brain cancer, which presented vast genomic variation with complicated pathologic mechanism.<br />Method: MicroRNA is a delicate post-transcriptional tuner of gene expression in the organisms by targeting and regulating protein coding genes. MiR-9 was reported as a significant biomarker for GBM patient prognosis and a key factor in regulation of GBM cancer stem cells. To explore the effect of miR-9 on GBM cell growth, we over expressed miR-9 in U87 and U251 cells. The cell viability decreased and apoptosis increased after miR-9 overexpression in these cells. To identify the target of miR-9, we scanned miR-9 binding site in the 3'UTRs region of expression SMC1A (structural maintenance of chromosomes 1A) genes and designed a fluorescent reporter assay to measure miR-9 binding to this region. Our results revealed that miR-9 binds to the 3'sUTR region of SMC1A and down-regulated SMC1A expression.<br />Result: Our results indicated that miR-9 was a potential therapeutic target for GBM through triggering apoptosis of cancer cells.