Abstract
Indole-based chalcones have been identified as interesting compounds with anticancer properties. In the present study, we report the synthesis and evaluation of new 1-methoxyindole and 2-alkoxyindole chalcone hybrids as antiproliferative agents active against colorectal carcinoma cell line. Among the 19 investigated molecules, four inhibit the proliferation of colorectal cancer cells HCT-116 with IC50 values <8 µM and display low cytotoxicity to fibroblast cell line 3T3. The UV–visible, CD and fluorescence competitive displacement assays with ethidium bromide and Hoechst 33258 performed with two active chalcones demonstrated that investigated chalcones interact with calf thymus (CT) DNA through the groove binding mode. Likewise, the quenching interaction of chalcones with bovine serum albumin (BSA) was studied in vitro under optimal physiological condition (pH = 7.4). The Stern–Volmer constant for chalcone-BSA system was found in the range of 105 M−1.
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Acknowledgements
This research was supported by the Grant Agency of Ministry of the Education, Science, Research and Sport of the Slovak Republic [VEGA project no. 2/0044/18, VEGA project no. 1/0753/17, VEGA project no. 1/0016/18, VEGA project no. 1/0138/20]. The support of Slovak Research and Development Grant Agency [project APVV-18-0357] is also gratefully acknowledged.
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Kudličková, Z., Takáč, P., Sabolová, D. et al. Novel 1-methoxyindole- and 2-alkoxyindole-based chalcones: design, synthesis, characterization, antiproliferative activity and DNA, BSA binding interactions. Med Chem Res 30, 897–912 (2021). https://doi.org/10.1007/s00044-020-02690-6
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DOI: https://doi.org/10.1007/s00044-020-02690-6