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Tytuł: Iron chelators and exogenic photosensitizers. Synergy through oxidative stress gene expression
Autor: Mrozek-Wilczkiewicz, Anna
Malarz, Katarzyna
Rams-Baron, Marzena
Serda, Maciej
Bauer, Daniela
Montforts, Franz-Peter
Ratuszna, Alicja
Burley, Thomas
Polański, Jarosław
Musioł, Robert
Słowa kluczowe: Chlorin derivative; Combination therapy; Oxidative stress; Photodynamic therapy; Photosensitizer; Thiosemicarbazone
Data wydania: 2017
Źródło: Journal of Cancer, Vol. 8, iss. 11 (2017), s. 1979-1987
Abstrakt: In non-invasive anticancer photodynamic therapy (PDT), a nontoxic photosensitizer (PS), which is activated by visible light, is used as a magic bullet that selectively destroys cancer cells. Recently, we described the combined therapy of 5-aminolevulinic acid (ALA-PDT) with thiosemicarbazone (TSC), i.e. an iron-chelating agent. This resulted in a strong synergistic effect. Herein, we investigated a novel strategy using a combination of PDT consist of the xenobiotic-porphyrin type PS with TSC. We observed a synergistic effect for all of the pairs of TSC-PS. This approach can be rationalized by the fact that both chlorin and TSC can affect the generation of reactive oxygen species (ROS). In order to elucidate the plausible mechanism of action, we also combined the investigated PSs with DFO, which forms complexes that are redox inactive. We detected a slight antagonism or additivity for this combination. This may suggest that the ability of an iron chelator (IC) to participate in the production of ROS and the generation of oxidative stress is important.
DOI: 10.7150/jca.17959
ISSN: 1837-9664
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