Background: This work presents the synthesis of Ru(II)NHC complexes bearing a series of 4-fluorobenzyl group. These complexes have been characterized by a variety of spectroscopic methods (1H NMR, 13C NMR, and FTIR) and by elemental analysis techniques.
Methods: These complexes' antitumor activities against SH-SY5Y (human neuroblastoma) and HCT116 (human colon cancer) were investigated by 3-(4,5-dimethylthiazole-2-yl)-2,5-biphenyl tetrazolium bromide (MTT) assay.
Results: The results showed that all the synthesized complexes exhibited significant cytotoxic effect with low IC50 values 15 ± 0.57, 15.26 ± 0.71, 7.64 ± 0.30, 27.66 ± 0.36 and 14.45 ± 0.84 (μg/mL) respectively.
Conclusion: Furthermore, apoptosis assessed by double labeling with Annexin V-FITC/PI indicated that complexes 1b and 1d can effectively induce apoptosis and inhibit cell proliferation at the S phase in SH-SY5Y cells. Taken together, Ru(II)NHC complexes containing the 4- fluorobenzyl group have significant potential for the development of novel, highly effective anticancer agents.
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