Abstract
The fluorescent properties of 2,5-di(benzo[b]thiophen-2-yl)pyrazine as a potential membrane targeting drug carrier were characterized and it was shown that its fluorescence intensity was much higher in organic solvent than in water. The embedding of studied compound by liposomes leads to ca. 2 orders of magnitude increase in its fluorescence intensity, suggesting its preferential accumulation in membranes. Preliminary biological studies showed its ability to accumulate in cells, and the concentration of 10μM was sufficient for homogeneous staining of cells. The treatment of mouse carcinoma CT26 cells with studied compound up to 200μM resulted in decreasing of viable cells by ca. 30%. Its reactivity towards albumin was found to be moderate with an association constant of 6×104M−1, while no interaction with DNA was observed. Our findings encourage for further studies on functionalization of this molecule to obtain a new class of anticancer drugs targeting membrane.
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