High eukaryotic initiation factor 5A2 expression predicts poor prognosis and may participate in the SNHG16/miR-10b-5p/EIF5A2 regulatory axis in head and neck squamous cell carcinoma

Targeting eIF5A2 reduces invasion and reverses chemoresistance in SCC-9 cells in vitro

BACKGROUND AND AIMS

Eukaryotic translation initiation factor 5A2 (EIF5A2) has been reported to be involved in metastasis and chemotherapy resistance in many human cancers. However, the effect and mechanism of EIF5A2 in oral cancer cells are unknown. Here, we investigated the effects of targeting EIF5A2 on chemotherapy resistance in oral cancer cells in vitro.

METHODS

By using a lentiviral system, we investigated the effects of targeting EIF5A2 on the invasion, migration, growth, and chemosensitivity of SCC-9 cells to CDDP in vitro. Through the method of gene intervention, we explore the role of pro-apoptotic Bim and epithelial and mesenchymal marker E-cadherin protein in this process and the regulation of EIF5A2 on Bim and E-cadherin.

RESULTS

Targeting EIF5A2 reduces invasion and migration in SCC-9 cells partly through upregulation of E-cadherin expression; Targeting EIF5A2 promotes cell apoptosis and inhibits cell survival as well as increasing chemosensitivity in SCC-9 cells through upregulation of Bim expression.

CONCLUSION

EIF5A2 may be a novel potential therapeutic target for oral cancer by upregulation of Bim and E-cadherin.