LACTB and neoplasm: LACTB expression is downregulated in melanoma tissues compared to the normal epithelium;Decreased LACTB expression predicts poor prognosis;iDPP/LACTB nanocomplexes promote cell apoptosis and block the cell cycle in vitro;iDPP/LACTB nanocomplexes inhibit tumor proliferation and induce cell apoptosis, consequently inhibiting melanoma growth in the subcutaneous B16-F10 melanoma model.