ALKBH5-mediated m6A demethylation of FOXM1 mRNA promotes progression of uveal melanoma

In this study, we found that ALKBH5, a key component of the N-6-methyladenosine (m(6)A) methyltransferase complex, was significantly elevated in uveal melanoma (UM) cell lines and that ALKBH5 downregulation inhibited tumor growth in vivo. High ALKBH5 expression predicted worse outcome in patients with UM. EP300-induced H3K27 acetylation activation increased ALKBH5 expression. Downregulation of ALKBH5 inhibited UM cell proliferation, migration, and invasion and increased apoptosis in vitro. Besides, ALKBH5 may promote UM metastasis by inducing epithelial-to-mesenchymal transition (EMT) via demethylation of FOXM1 mRNA, which increases its expression and stability. In sum, our study indicates that AKLBH5-induced m(6)A demethylation of FOXM1 mRNA promotes UM progression. Therefore, AKLBH5 is a potential prognostic biomarker and therapeutic target in UM.

Automated summary

The study revealed that high expression of ALKBH5 is associated with poor outcome in uveal melanoma. ALKBH5 promotes UM progression by demethylating FOXM1 mRNA, potentially inducing EMT for cell metastasis.