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. 2024 Aug 13;7:180. doi: 10.1038/s42004-024-01256-6

Fig. 18. Structure of IR-83 (43a) and NHS-N782 (43b).

Fig. 18

The heptamethine moiety within 43a serves dual roles as agents for photodynamic therapy (PDT) and photothermal therapy (PTT). Incorporating 2-nitroimidazole, a radiosensitizer, inhibits oxidative phosphorylation, thereby amplifying mitochondrial and cellular sensitivity to both PDT and radiotherapy. The Salmonella-modified by 43b effectively integrates mitochondria-targeted PTT with the stimulation of an anticancer immune response.