Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

A Combination of Ruthenium Complexes and Photosensitizers to Treat Colorectal Cancer

Version 1 : Received: 27 September 2023 / Approved: 27 September 2023 / Online: 28 September 2023 (04:03:48 CEST)

A peer-reviewed article of this Preprint also exists.

Massoud, J.; Pinon, A.; Gallardo-Villagrán, M.; Paulus, L.; Ouk, C.; Carrion, C.; Antoun, S.; Diab-Assaf, M.; Therrien, B.; Liagre, B. A Combination of Ruthenium Complexes and Photosensitizers to Treat Colorectal Cancer. Inorganics 2023, 11, 451. Massoud, J.; Pinon, A.; Gallardo-Villagrán, M.; Paulus, L.; Ouk, C.; Carrion, C.; Antoun, S.; Diab-Assaf, M.; Therrien, B.; Liagre, B. A Combination of Ruthenium Complexes and Photosensitizers to Treat Colorectal Cancer. Inorganics 2023, 11, 451.

Abstract

Treatment regimens are regularly evolving, together with novel therapies and drugs. Such evolution is necessary to circumvent resistance mechanisms and to give patients the best possible health care. When dealing with cancer, most regimens involve multiple treatments (surgery, radiation therapy, chemotherapy, immunotherapy, etc.). The purpose of this study was to associate in a single compound metal-based drugs and photosensitizers to combine chemotherapy and photodynamic therapy. Two arene-ruthenium tetrapyridylporphyrin compounds (2H-TPyP-arene-Ru and Zn-TPyP-arene-Ru) have been synthesized and evaluated on two colorectal cancer cell lines (HCT116 and HT-29). The cytotoxicity and phototoxicity have been evaluated. In addition, the anticancer mechanism and the cell death process mediated by the two compounds were studied. The results showed that the two arene-ruthenium photosensitizer-containing complexes have a strong phototoxic effect after photoactivation. The 2H-TPyP-arene-Ru induced outstanding cytotoxicity when compared to the Zn-TPyP-arene-Ru analogue. Moreover, under light, these two arene-ruthenium photosensitizers induce an apoptotic process in human colorectal cancer cell lines.

Keywords

Colorectal cancer; Photodynamic therapy; Apoptosis; Porphyrin; Metalla-assemblies; Arene ruthenium; Chemotherapy

Subject

Chemistry and Materials Science, Medicinal Chemistry

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