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- W3014670616 abstract "Photosensitizers (porphyrins) attack cancer cells and during photoactivation contribute to the generation of reactive oxygen species that damage various structures of cancer cells, which leads to their destruction. Porphyrins reach tumors through the blood and modelling of conditions for the transfer of porphyrins to the tumor (binding to blood proteins, the influence of pH and salt composition of the medium) is one of the most important problem of photodynamic therapy (PDT) of tumor. Ceruloplasmin (CP) is an important copper-containing plasma protein that actively binds photosensitizers (PS) and can play a certain role in the transfer of photosensitizers to the tumor. Changes in pH, as well as of salt composition in the tumor tissue and its cells can cause modifications in the complexes [CP + PS] and a possible separation of the PS from the complex can change the photodynamic process of tumor destruction. In this paper, it was shown that: 1) with a change in the pH of the medium from neutral to acidic, as well as with a change in the salt composition of the medium, significant conformational changes of ceruloplasmin and the transition of photosensitizers to the surface (for cationic porphyrins) or to the inside of the protein macromolecule (for chlorin e6) occur, with a partial separation of photosensitizers from protein; 2) CP can form complexes with photosensitizers and be an active carrier of PSs in the blood." @default.
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- W3014670616 date "2020-04-02" @default.
- W3014670616 modified "2023-09-27" @default.
- W3014670616 title "Binding of ceruloplasmin with cationic porphyrins: pH and salt composition of a medium" @default.
- W3014670616 doi "https://doi.org/10.1117/12.2556021" @default.
- W3014670616 hasPublicationYear "2020" @default.
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