A Nature study identified a ferroptosis control switch centered on the fission protein MFF, linking organelle dynamics to an iron-dependent cell death program. The finding positions ferroptosis regulation as an actionable biology axis, with potential downstream relevance for oncology and neurodegenerative therapeutic strategies. In CAR-NK engineering, researchers reported that rewiring the 2B4 signal gives CAR-NK cells a lasting anti-cancer advantage. The work aims to improve persistence and functional depth—key problems that have limited the impact of cell-based immunotherapies beyond early responses. Together, the articles emphasize two complementary translational routes: unlocking cell-death switches for pharmacologic leverage and improving immune-cell engineering for durable tumor control.