N6-methyladenosine methylation regulator FTO promotes oxidative stress and induces cell apoptosis in ovarian cancer

Aims: This study aimed to reveal the possible molecular mechanism of n6-methyladenosine (m6A) methylation regulator FTO in the biological activities of ovarian cancer (OC) based on The Cancer Genome Atlas, Genotype-Tissue Expression and Gene Expression Omnibus databases. Materials & methods: A risk score model was constructed to predict the prognosis of patients with OC. The key m6A methylation regulator was screened out based on OC-related microarray datasets. Results: 22 m6A methylation regulators were differentially expressed and interacted with each other in OC. FTO, a key m6A methylation regulator, was singled out. In vivo experiments verified that FTO promoted oxidative stress and apoptosis of OC cells to inhibit tumor growth in nude mice. Conclusion: This study highlighted the tumor-suppressive mechanism of m6A methylation regulator FTO in OC.