iASPP, a microRNA‑124 target, is aberrantly expressed in astrocytoma and regulates malignant glioma cell migration and viability.

Abstract:

:MicroRNAs (miRNAs) regulate biogenesis and disease development by targeting numerous mRNAs. miRNA (miR)‑124 and its direct target, inhibitor of apoptosis‑stimulating protein of p53 (iASPP), may be involved in tumor development and progression. The aim of the present study was to explore the role of miR‑124‑targeted iASPP in glioma. The results demonstrated that miR‑124 was aberrantly expressed in astrocytic glioma tissue and in the human glioblastoma cell lines U87 and U251. The expression of miR‑124 was lower in astrocytic gliomas compared with normal brain (NB) tissues, with a more reduced expression in higher‑grade tumors. In addition, several miR‑124 loci (including miR‑124‑1, miR‑124‑2 and miR‑124‑3) were revealed to be more highly methylated in U87 cells compared with methylation levels in U251 cells and NB cells. Furthermore, the expression of iASPP was higher in high‑grade astrocytic gliomas compared with low‑grade astrocytic gliomas. miR‑124 overexpression effectively inhibited U87 and U251 cell migration. In addition, miR‑124 regulated cell viability and arrested the cell cycle at the G0/G1 phase in these two cell lines. miR‑124 also reduced the expression levels of the cell cycle related genes iASPP, cyclin‑dependent kinase (CDK)4, CDK6 and cyclin D1. Results from the present study indicated that expression of the miR‑124 target gene iASPP may contribute to glioma development and progression.

journal_name

Mol Med Rep

authors

Liu X,Kang J,Sun S,Luo Y,Ji X,Zeng X,Zhao S

doi

10.3892/mmr.2017.8097

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

1970-1978

issue

1

eissn

1791-2997

issn

1791-3004

journal_volume

17

pub_type

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