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• W4296879430 abstract "Five new bifunctional conjugates of pyropheophorbide a with 17-substituted testosterone, dihydrotestosterone and epitestosterone differing in the length of linker (1 � 5) and two new complex conjugates 6 and 7 (containing three functional units: pyropheophorbide a, 17?-substituted testosterone, and lipophylic hexadecyl chain, connected with L-lysine joining block) were synthesized. Mutual influence of steroidal and macrocyclic fragments in conjugates (1 � 7) was established by analysis of 1H NMR spectra and molecular models of conjugates. Studies of interaction of conjugates 1 � 5 with prostate carcinoma cells revealed that their uptake and internalization were dependent on the structure of conjugates, particularly on the stereochemical configuration of 17-hydroxyl group in steroidal moiety, and the length of linker connecting pyropheophorbide a with steroid fragments. Conjugates 1 � 5 significantly decreased the growth and proliferation of LNCaP and PC-3 cells. The highest anti-proliferative activity demonstrated by epitestosterone derivative 3, comprising short linker. Irradiation of labeled cells with light (? = 660 nm) was significantly increased cytotoxicity. Trifunctional conjugates 6 and 7 easily formed mixed micells with phosphatidyl choline and pluronic F68; these mixed micelles efficiently internalized by human hepatocarcinoma Hep G2 cells. The binding of conjugates 6 and 7 in the form of mixed micelles to Hep G2 cells depended on the conjugate structure, rather than on the method of solubilization." @default.
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• W4296879430 date "2022-01-01" @default.
• W4296879430 modified "2023-10-14" @default.
• W4296879430 title "Conjugates of Pyropheophorbide a with 17-Substituted Steroidal Androgens. Synthesis, Molecular Modeling, Interaction with Some Cancer Cells" @default.
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• W4296879430 doi "https://doi.org/10.18097/bmcrm00167" @default.
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