Antitumor agent-163

Antitumor agent-163 (Compound 3) serves as a photosensitizer in molecular-targeted photodynamic therapy (MT-PDT) aimed at carbonic anhydrase IX (CAIX) . Under illumination at 540 nm, Antitumor agent-163 inactivates CAIX protein through singlet oxygen generation without affecting internal standard proteins such as α-tubulin, β-actin, and proliferating cell nuclear antigen (PCNA) . It induces cell membrane damage and reduces cell viability with IC50 values of 0.2 μM for A549 and 0.05 μM for U87MG. Furthermore, Antitumor agent-163 demonstrates antitumor activity in mouse models.