STAMBP and cancer: They induced ferroptosis in cancer cells by structuring α-MSH-PEG-C′ dots with near-infrared fluorescent ultra-small silica nanoparticles (C′ dots, ~ 6 nm), polyethylene glycol (pegylated C′ dots), and alpha-melanocyte stimulating hormone (α-MSH) and reported an increase in the Fe level, an accumulation of ROS, and a decrease in the GSH level [52, 53].