Abstract:
:Recently, many studies have found that the miR-106b ~25 cluster plays an oncogenic role in tumor progression. However, the precise role of each microRNAs (miRNAs) in the cluster is not yet clear. In the present study, we examined the expression of miR-106b in glioma samples and a tissue microarray by real-time PCR and in situ hybridization (ISH), respectively, finding that miR-106b is overexpressed in the majority of gliomas. Meanwhile, the expression of miR-106b was positively correlated with tumor grade (p < 0.05). The transfection of a miR-106b anti-sense oligonucleotide (ASON) into three human glioma cell lines (U251, LN229 and TJ905) suppressed the proliferation of these cells. Moreover, the growth of xenograft tumors in nude mice treated with miR-106b ASON was significantly impaired. A bioinformatics analysis predicted that RBL2 may be the target of miR-106b, and dual-luciferase reporter assays identified RBL2, but not RB1 or RBL1, as a target of miR-106b. These results suggest that miR-106b facilitates glioma cell growth by promoting cell cycle progression through the negative regulation of RBL2.
journal_name
J Neurooncoljournal_title
Journal of neuro-oncologyauthors
Zhang A,Hao J,Wang K,Huang Q,Yu K,Kang C,Wang G,Jia Z,Han L,Pu Pdoi
10.1007/s11060-013-1061-2subject
Has Abstractpub_date
2013-04-01 00:00:00pages
179-89issue
2eissn
0167-594Xissn
1573-7373journal_volume
112pub_type
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