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Effect of downregulated lncRNA NBAT1 on the biological behavior of glioblastoma cells.

OBJECTIVE: To investigate the expression of lncRNA neuroblastoma associated transcript 1 (NBAT1) in human glioma cell lines and its underlying mechanism. Effect of NBAT1 on biological behaviors of T98 and U87 cells are also explored.

PATIENTS AND METHODS: The mRNA expressions of NBAT1 in 48 cases of glioblastoma tissues and 30 cases of normal brain tissues were accessed by Real-time fluorescence quantitative PCR (RT-PCR). The relationship between mRNA expression of NBAT1 and tumor size, malignancy, and prognosis were analyzed. Effects of NBAT1 on the proliferation of glioblastoma T98 and U87 cells were determined by CCK-8 assay and colony formation assay, respectively.

RESULTS: NBAT1 expressions in glioblastoma tissues were lower than those in normal brain tissues, which was negatively correlated with malignancy degree (p<0.01). Protein levels of Akt were decreased in T98 and U87 cells transfected with si-NBAT1. Meanwhile, proliferation abilities of T98 and U87 cells transfected with si-NBAT1 were significantly decreased as well (p<0.01), which were reversed by transfection of si-Akt.

CONCLUSIONS: Upregulated NBAT1 inhibits proliferation of T98 and U87 cells via regulating Akt, indicating that NBAT1 may be related to the malignancy and prognosis of gliomas.

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