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LncRNA GSEC promotes the proliferation, migration and invasion by sponging miR-588/ EIF5A2 axis in osteosarcoma.

Abstract：

BACKGROUND:Long noncoding RNAs (LncRNAs) show dysregulation in a variety of cancers. However, the function and specific mechanism of LncRNA GSEC in the progression of osteosarcoma remain mostly unknown. In this study, we sought to elucidate the role and mechanism of LncRNA GSEC in the occurrence and progression of osteosarcoma. METHODS:we examined the expression of LncRNA GSEC in osteosarcoma cell lines by quantitative real time PCR. In vitro experiments, including transwell assays, cck8 assays, and flow cytometry analysis have biologically demonstrated the effect of LncRNA GSEC on the proliferation and migration of osteosarcoma cell lines. Furthermore, the regulation of miR-588 by LncRNA GSEC was determined by luciferase reporter assay and quantitative real time PCR. What's more, subcutaneous tumor formation was performed in nude mice to monitor the growth of the tumor in vivo. RESULTS:We found that the expression of LncRNA GSEC was up-regulated in osteosarcoma cell lines. Overexpression of LncRNA GSEC promoted the proliferating and migratory capacity, and inhibited the apoptosis of osteosarcoma cells. Conversely, knockdown of LncRNA GSEC resulted in the opposite effect. Mechanistically, we identified LncRNA GSEC functioned as the sponge of miR-588, thus inhibiting the miR-588/EIF5A2 signal pathway. In addition, the expression of miR-588 was negatively correlated with LncRNA GSEC, and the effect by silencing or overexpressing LncRNA GSEC could be rescued by the introduction of miR-588 mimics or inhibitors, respectively. CONCLUSIONS:In summary, this study shows that LncRNA GSEC promotes the proliferation and invasion of OS through the regulation of miR-588/EIF5A2 pathway, which might provide a new strategy for the treatment of osteosarcoma in the future.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Liu R,Ju C,Zhang F,Tang X,Yan J,Sun J,Lv B,Guo Y,Liang Y,Lv XB,Zhang Z

doi

10.1016/j.bbrc.2020.08.056

subject

Has Abstract

pub_date

2020-11-05 00:00:00

pages

300-307

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(20)31636-3

journal_volume

532

pub_type

杂志文章

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