Circ_0132817 facilitates cell proliferation, migration, invasion and glycolysis by regulating the miR-432-5p/NOL4L axis in neuroblastoma.

Neuroblastoma (NB) is one of the most common extracranial solid tumors in children. Circular RNAs (circRNAs) have been shown to be involved in the development of NB. However, the function of circ_0132817 in NB is currently unclear. In this paper, the levels of circ_0132817 and NOL4L were induced in NB tissues and cells, and miR-432-5p expression was on the contrary. MiR-432-5p was verified as a target of circ_0132817 and miR-432-5p could bind to NOL4L. The inhibitory effects of miR-432-5p overexpression on cell proliferation, migration, invasion and glycolysis could be reversed by circ_0132817 facilitation. The suppression of NOL4L knockdown on NB cells progression could be rescued by miR-432-5p inhibition. Besides, knockdown of circ_0132817 repressed tumor growth in vivo. Thus, we came to a conclusion that circ_0132817 promoted the tumorigenesis of NB cells by up-regulating NOL4L and acting as a sponge for miR-432-5p.