LncRNA LINC-PINT is downregulated in melanoma and regulates cell proliferation by downregulating lncRNA BANCR.

Abstract

The development of melanoma may involve long non-coding RNAs (lncRNAs); however, the functions of the majority of lncRNAs in melanoma are unknown. The present study investigated the role of long intergenic non-protein coding RNA p53 induced transcript (LINC-PINT) in melanoma. In the present study, quantitative PCR was used to detect gene expression, overexpression experiments were performed to analyze gene interactions and CCK-8 assays were used to analyze cell proliferation. LINC-PINT was downregulated, while BRAF-activated non-coding RNA (BANCR) was upregulated in melanoma tissues compared with normal adjacent tissues. Expression levels of LINC-PINT decreased, while expression levels of BANCR increased with increasing tumor thickness. The expression levels of LINC-PINT and BANCR were inversely associated in melanoma tissues but not in healthy adjacent tissue. LINC-PINT overexpression downregulated BANCR expression in melanoma cells, while BANCR overexpression did not significantly affect LINC-PINT expression. LINC-PINT overexpression inhibited melanoma cell proliferation in vitro compared to controls. BANCR overexpression attenuated the effects of LINC-PINT overexpression. The present study revealed that lncRNA LINC-PINT is downregulated in melanoma and may regulate melanoma cell proliferation by downregulating lncRNA BANCR.