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Pubmed ID :29091297
Publication Date : //

Effect of microRNA-128 on cisplatin resistance of glioma SHG-44 cells by targeting JAG1.


This current study intends to investigate the effect of microRNA-128 (miR-128) on cisplatin (DDP) resistance in glioma SHG-44 cells. SHG-44/DDP cells were transfected with miR-128 antisense oligonucleotide (ASO) and assigned into blank, resistance, NC, anti-miR-128, miR-128 mimic, si-JAG1, and anti-miR-128 + si-JAG1 groups. qRT-PCR and Western blotting were employed for determining expression of miR-128, JAG1, Bax and Bcl-2. MTT assay, Giemsa staining, and flow cytometry were applied to detect DDP resistance, cellular morphology, and cell cycle, respectively. JAG1 is targeted and negatively regulated by miR-128. In in vitro experiments, compared with the blank group, the rest groups exhibited declined miR-28 and Bax expression, lowered cell inhibition rate and apoptosis rate, but elevated JAG1 and Bcl-2 expression with cells arrested in the S phase. Compared with the resistance group, the anti-miR-128 group showed decreasedBax expression along with a lowered cell inhibition rate and apoptosis rate, but increased JAG1 and Bcl-2 expression with reduced cells arrested in the S phase; while the miR-128 mimic group showed an opposite trend; the si-JAG1 group showed decreased Bcl-2 expression and reduced cells in the S phase. In in vivo experiments, compared with the resistance group, the tumor growth rate, tumor volume, and weight as well as JAG1 expression accelerated in the anti-miR-128 group; whereas the miR-128 mimic and si-JAG1 groups exhibited an opposite trend. Our findings demonstrated that miR-128 ASO transfection might down-regulate the expression of miR-128 in SHG-44/DDP and up-regulate the DDP resistance in SHG-44/DDP cells, providing a potential treatment target for glioma.

Authors : Yi Dong-Ye , Su Qing , Zhang Fang-Cheng , Fu Peng , Zhang Qing , Cen Yong-Cun , Zhao Hong-Yang , Xiang Wei ,

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