METTL16-Mediated Upregulation of FGD5-AS1 Promotes Progression of Osteosarcoma through Targeting of miR-195-5p/SLC7A2 Axis.

Dysregulated long noncoding RNAs (lncRNAs) promote the progression of osteosarcoma (OS). This study aimed to investigate the potential of lncRNA FGD5-AS1 in OS. Gene expression was determined using RT-qPCR. Protein expression was detected by western blot. N6-methyladenosine (m6A) modification was confirmed by MeRIP. Cell behaviors were detected using CCK-8, colony formation, and transwell assays. The interaction between miR-195-5p and the FGD5-AS1/SLC7A2 axis was confirmed by luciferase assays. FGD5-AS1 was upregulated in OS, induced by METTL16 via mediating m6A modification. However, FGD5-AS1 knockdown inhibited the proliferation and epithelial-mesenchymal transition (EMT) of OS cells. FGD5-AS1 sponged miR-195-5p to mediate the upregulation of SLC7A2, overexpression of which promoted aggressiveness of OS cells. In summary, METTL16-mediated upregulation of FGD5-AS1 promotes the aggressiveness of OS though targeting of miR-195-5p/SLC7A2 axis.