Towards Novel Photodynamic Anticancer Agents Generating Superoxide Anion Radicals: A Cyclometalated Ir-III Complex Conjugated to a Far-Red Emitting Coumarin

0510188 - BFÚ 2020 RIV DE eng J - Článek v odborném periodiku
Novohradský, Vojtěch - Rovira, M.G. - Hally, C. - Galindo, A. - Vigueras, G. - Gandioso, A. - Svitelova, M. - Bresoli-Obach, R. - Kostrhunová, Hana - Marková, Lenka - Kašpárková, Jana - Nonell, S. - Ruiz, J. - Brabec, Viktor - Marchan, V.
Towards Novel Photodynamic Anticancer Agents Generating Superoxide Anion Radicals: A Cyclometalated Ir-III Complex Conjugated to a Far-Red Emitting Coumarin.
Angewandte Chemie - International Edition. Roč. 58, č. 19 (2019), s. 6311-6315. ISSN 1433-7851. E-ISSN 1521-3773
Grant CEP: GA ČR(CZ) GA18-09502S
Institucionální podpora: RVO:68081707
Klíčová slova: iridium(iii) complexes * ir(iii) complexes * bodipy ligands * therapy * photosensitizers * conjugation
Obor OECD: Physical chemistry
Impakt faktor: 12.959, rok: 2019
Způsob publikování: Omezený přístup
https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201901268

Although cyclometalated Ir-III complexes have emerged as promising photosensitizers for photodynamic therapy, some key drawbacks still hamper clinical translation, such as operability in the phototherapeutic window and reactive oxygen species (ROS) production efficiency and selectivity. In this work, a cyclometalated Ir-III complex conjugated to a far-red-emitting coumarin, Ir-III-COUPY, is reported with highly favourable properties for cancer phototherapy. Ir-III-COUPY was efficiently taken up by HeLa cells and showed no dark cytotoxicity and impressive photocytotoxicity indexes after irradiation with green and blue light, even under hypoxia. Importantly, a clear correlation between cell death and intracellular generation of superoxide anion radicals after visible light irradiation was demonstrated. This strategy opens the door to novel fluorescent photodynamic therapy agents with promising applications in theragnosis.
Trvalý link: http://hdl.handle.net/11104/0300714