Antitumor photosensitizer-5

Antitumor photosensitizer-5 (Ru2) is an effective photosensitizing agent that targets tumor mitochondria, with an IC50 of 0.3 μM for phototoxicity against A549 cells. Upon exposure to 460 nm light, it induces reactive oxygen species production and NADH depletion, leading to mitochondrial damage, caspase-3 activation, apoptosis induction, and inhibition of cell migration. Antitumor photosensitizer-5 shows potential for preventing malignant tumor growth and may be applicable in photodynamic therapy.