Circular RNA 0102049 suppresses the progression of osteosarcoma through modulating miR-520g-3p/PLK2 axis.

Circular RNA 0102049 suppresses the progression of osteosarcoma through modulating miR-520g-3p/PLK2 axis.
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DOI:
10.1080/21655979.2021.1923259
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发表时间:
2021-12
期刊:
影响因子:
4.9
通讯作者:
Yu B
Yu B
中科院分区:
生物学2区
文献类型:
--
作者:
Zhang X;Hu Z;Li W;Liu Z;Li J;Wang Z;Martin VT;Yan B;Yu B

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环状rna (circRNAs)是一种由反向剪接产生的非编码rna,可增强或抑制包括骨肉瘤(OS)在内的多种人类癌症的进展。虽然circ_0102049在OS细胞系中高表达,但circ_0102049在OS中的作用和具体机制尚不清楚。在这里,我们发现circ_0102049的沉默可以通过海绵化microRNA-520g-3p在体内显著加剧OS的肿瘤发生。polo样激酶2 (PLK2)被预测为miR-520g-3p的靶标,荧光素酶报告基因检测显示,过表达miR-520g-3p可显著抑制PLK2的表达,而miR-520g-3p抑制剂可促进PLK2的表达。此外,circ_0102049的沉默可以通过调节miR-520g-3p/PLK2轴,在体外显著促进OS细胞系MG63细胞的增殖、侵袭、迁移和细胞周期的促进,同时抑制其凋亡。综上所述,本研究表明circ_0102049通过调节miR-520g-3p/PLK2/TAp73轴抑制骨肉瘤的进展,为OS提供了潜在的治疗靶点。
Circular RNAs (circRNAs) are a type of non-coding RNAs generated from back splicing to enhance or inhibit the progression of multiple human cancers including osteosarcoma (OS). Although circ_0102049 has been found to be highly expressed in OS cell lines, the role and specific mechanism of circ_0102049 in OS remains unclear. Here, we found that silence of circ_0102049 could significantly exacerbate the tumorigenesis of OS in vivo through sponging microRNA-520g-3p. Polo-like kinase 2 (PLK2) was predicted to be a target of miR-520g-3p, and luciferase reporter assay revealed that overexpression of miR-520g-3p dramatically suppressed the expression of PLK2, whereas miR-520g-3p inhibitor promoted the PLK2 expression. Moreover, the silence of circ_0102049 could markedly promote the proliferation, invasion, migration and cell-cycle promotion while inhibiting the apoptosis of OS cell line MG63 cells in vitro through regulating miR-520g-3p/PLK2 axis. Taken together, the present study indicated that circ_0102049 suppressed the progression of osteosarcoma via modulating miR-520g-3p/PLK2/TAp73 axis, providing a potential therapeutic target for OS.
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