Angelica polysaccharide exhibits antitumor effect in neuroblastoma cell line SH-SY5Y by up-regulation of miR-205. - GreenMedInfo Summary

Neuroblastoma (NB) is a serious disease with high-risk and poor prognosis in children. Survivors often have serious side effects. Angelica polysaccharide (AP) has been proved to exert antitumor function. Therefore, we explored the mechanism of this function in NB to accelerate the clinical application of AP in NB therapy. SH-SY5Y cells were transfected with miR-205 inhibitor and pretreated by AP. Cell activity, colonies number, and apoptosis were detected via Cell Counting Kit-8 assay, colony formation experiment, and flow cytometry, respectively. Targeting link between miR-205 and zinc finger E-box binding homeobox 1 (ZEB1) was measured via luciferase activity assay. Quantitative reverse transcription polymerase chain reaction and western blot was to examine levels of miR-205 and related factors. We found that AP suppressed cell activity and colony formation, whereas induced apoptosis in SH-SY5Y cells. Besides, AP also suppressed Epithelial-mesenchymal transition process and phosphatidylinositol 3 kinase (PI3K)/protein kinase B (AKT) and extracellular signal-regulated kinase (ERK1/2) signal passageways. Additionally, miR-205 was positively regulated by AP. AP played its antitumor functions through up-regulating miR-205. Target of miR-205 was ZEB1. Our study demonstrated that AP played its antitumor role in NB through positively regulation of miR-205, whose target gene was ZEB1.