Long noncoding RNA LINC00052 suppressed the proliferation, migration and invasion of glioma cells by upregulating KLF6.

Abstract

Recent studies have discovered a class of dysregulated long noncoding RNAs (lncRNAs) related to carcinogenesis. This study aims to uncover the molecular functions of lncRNA LINC00052 in the tumorigenesis of glioma. Quantitative Real-time polymerase chain reaction (qRT-PCR) was performed to detect LINC00052 expression in 40 glioma samples and 4 glioma cell lines. Besides, regulatory effects of LINC00052 on the in vitro behaviors of glioma cells were evaluated by the proliferation assay, transwell assay and wound healing assay. Furthermore, the interaction between LINC00052 and kruppel-like factor 6 (KLF6) in mediating the progression of glioma was studied by performing qRT-PCR and Western blot. LINC00052 expression was remarkably downregulated in glioma samples compared with that in adjacent samples. Moreover, cell proliferation, invasion, and migration of glioma were inhibited after overexpression of LINC00052 in vitro. Besides, LINC00052 overexpression upregulated mRNA and protein level of KLF6. Besides, the expression of KLF6 in tumor tissues was positively correlated to the expression of LINC00052. These results suggested that LINC00052 could repress cell migration, invasion and proliferation in glioma through upregulating KLF6, which may offer a new therapeutic intervention for glioma patients.