DHODH and colorectal carcinoma: DHODH restoration rescued ferroptosis and reversed the enhanced drug sensitivity induced by NSUN2 knockdown.<h4>Conclusion</h4>These findings identify an NSUN2-DHODH epitranscriptomic axis that promotes CRC progression and OXA resistance by limiting ferroptosis, supporting NSUN2-targeting and ferroptosis-inducing strategies to improve chemotherapy response.