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In Vitro and In Vivo Demonstration of Human-Ovarian-Cancer Necrosis through a Water-Soluble and Near-Infrared-Absorbing Chlorin. | LitMetric
With the objective of developing efficient sensitizers for therapeutic applications, we synthesized a water-soluble 5,10,15,20-tetrakis(3,4-dihydroxyphenyl)chlorin (TDC) and investigated its in vitro and in vivo biological efficacy, comparing it with the commercially available sensitizers. TDC showed high water solubility (6-fold) when compared with that of Foscan and exhibited excellent triplet-excited-state (84%) and singlet-oxygen (80%) yields. In vitro photobiological investigations in human-ovarian-cancer cell lines SKOV-3 showed high photocytotoxicity, negligible dark toxicity, rapid cellular uptake, and specific localization of TDC in neoplastic cells as assessed by flow-cytometric cell-cycle and propidium iodide staining analysis. The photodynamic effects of TDC include confirmed reactive-oxygen-species-induced mitochondrial damage leading to necrosis in SKOV-3 cell lines. The in vivo photodynamic activity in nude-mouse models demonstrated abrogation of tumor growth without any detectable pathology in the skin, liver, spleen, or kidney, thereby demonstrating TDC application as an efficient and safe photosensitizer.
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