miRNA-497 Negatively Regulates the Growth and Motility of Chondrosarcoma Cells by Targeting Cdc25A

被引:19
作者
Lu, Yandong [1 ]
Li, Fangguo [1 ]
Xu, Tao [2 ]
Sun, Jie [1 ]
机构
[1] Tianjin Hosp, Dept Orthopaed Traumatol, Jiefang South Rd 406, Tianjin 300211, Peoples R China
[2] Jixian Peoples Hosp, Dept Orthopaed, Tianjin, Peoples R China
关键词
miR-497; Chondrosarcoma (CHS); Metastasis; Cdc25A; p21; CYCLE ARREST; EXPRESSION; PATHWAY; P21;
D O I
10.3727/096504016X14519157902681
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Chondrosarcoma (CHS) is the second most common malignant bone sarcoma with increased risk of invasion and metastasis. However, the regulatory mechanisms of CHS tumorigenesis remain unknown. Here we investigated the novel role of miR-497 in regulating chondrosarcoma cell growth and cell cycle arrest. RT-PCR analysis showed that the expression of miR-497 is aberrantly downregulated in human chondrosarcoma samples and cells. After transfection with miR-497 mimic or antagomir, the proliferation and apoptosis of JJ012 and OUMS-27 chondrosarcoma cells were determined by CCK-8 assay and flow cytometric analysis, respectively. Results showed that the proliferation capacity of JJ012 and OUMS-27 cells was significantly decreased by miR-497 overexpression but increased by miR-497 repression. Apoptosis in both cell types was remarkably enhanced by miR-497 mimic but inhibited by miR-497 antagomir. By bioinformatics and luciferase reporter analysis, Cdc25A was proven to be a direct target of miR-497 in chondrosarcoma cells. Further studies indicated that miR-497 modulates the growth of chondrosarcoma cells by targeting Cdc25A, in which the cell cycle inhibitor p21 is involved through a p53-independent pathway. In conclusion, we demonstrated that miR-497 represents a potential tumor suppressor in human chondrosarcoma that regulates the growth of chondrosarcoma cells by targeting Cdc25A. This may provide a novel therapeutic target for chondrosarcoma.
引用
收藏
页码:155 / 163
页数:9
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