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- W2570531348 abstract "Cell exposure to light-independent effects of photosensitizers (PS) used in PDT is clinically relevant when PS affect the pro-apoptotic cascade. In many malignant cells, Hypericin (Hyp) has PS displayed light-dependent anti-proliferative and cytotoxic effects with no cytotoxicity in the dark. Recent studies have shown that Hyp also exhibited light-independent cytotoxic effects in a wide range of concentrations. The molecular mechanisms underlying Hyp light-independent (dark) toxicity may be due to its interaction with different molecules at the Hyp accumulation sites including mitochondria, and these mechanisms are not understood in detail. Here, we demonstrate that in human glioma and endothelial cells, Hyp displayed light-independent effects at several sub-cellular levels (ultrastructure, mitochondria function and metabolism, and protein synthesis). Taking together previously published and our present results, the findings strongly suggest that Hyp light independent effects: (i) depend on the cell type and metabolism; (ii) underlying molecular mechanisms are due to Hyp interaction with the multiple target molecules including Bcl2 family of proteins. In addition, the findings suggest that Hyp without illumination can be explored as an adjuvant therapeutic drug in combination with chemo- or radiation cancer therapy." @default.
- W2570531348 created "2017-01-13" @default.
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- W2570531348 date "2017-04-01" @default.
- W2570531348 modified "2023-10-16" @default.
- W2570531348 title "Assessing light-independent effects of hypericin on cell viability, ultrastructure and metabolism in human glioma and endothelial cells" @default.
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- W2570531348 doi "https://doi.org/10.1016/j.tiv.2017.01.005" @default.
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