Title: Effect of knocking down miR-19a on proliferation and apoptosis of human glioma cell line U251 in vitro
Abstract:Objective
To investigate the effect of knocking down miR -19a on proliferation and apoptosis of human glioma cell line U251 in vitro.
Methods
U251 cells were cultured routinely. MiR-19a inhibit...Objective
To investigate the effect of knocking down miR -19a on proliferation and apoptosis of human glioma cell line U251 in vitro.
Methods
U251 cells were cultured routinely. MiR-19a inhibitor was transfected into U251 cells by Lipofectamine 2000. At the same time, the negative control group and blank control group were established. The expression level of miR-19a was detected by RT-PCR. and cell proliferation was analyzed by CCK-8 assay. The changes of cell apoptosis and cycle were monitored by flow cytometry.
Results
Compared with the negative control group and blank control group, qRT-PCR showed that the expression level of miR-19a was significantly reduced after transfection (F = 124.72, P < 0.01). CCK-8 revealed that proliferation ability of miR-19a inhibitor group was significantly suppressed. The cell survival rate in miR-19a inhibitor group after 48 h was (48.27±8.23) %, compared with the blank control group(100.00 %), the difference was statistically significant (t = 12.45, P < 0.01). After low-expression of miR-19a, the G0/G1 phase cells were increased and S phase cells were decreased. The low-expression of miR-19a could induce cell apoptosis.
Conclusions
Low-expression of miR-19a can inhibit cell proliferation, block G1/S transition and induce apoptosis in human glioma cell line U251. miR-19a may serve as an attractive target of gene therapy for glioblastoma.
Key words:
miR-19a; Human glioma; Cell proliferation; ApoptosisRead More
Publication Year: 2016
Publication Date: 2016-05-28
Language: en
Type: article
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