Title:Apoptotic Effect of Novel Benzimidazole Derivatives Bearing Pyridyl/Pyrimidinyl Piperazine Moiety
Volume: 22
Issue: 9
Author(s): Gulsen A. Çiftçi*, Halide E. Temel and Leyla Yurttaş
Affiliation:
- Department of Biochemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskisehir, Turkey
Keywords:
Anticancer, apoptosis, benzimidazoles, A549 and C6 glioma, modulators, anticancer activity.
Abstract:
Background: Benzimidazole derivatives bearing pyridyl/pyrimidinyl piperazine moiety has attracted attention
in medicinal chemistry and modern drug discovery since it exhibited a variety of biological activities, including
anticancer activity.
Objective: In this study, we designed and synthesized novel 1-[2-oxo-2-(4-substituted phenyl)ethyl]benzimidazol-2-
yl)methyl 4-(2-pyridyl/pyrimidin-2-yl)piperazine-1-carbodithioate derivatives (2a-m). We also investigated their anticancer
activities against A549 lung adenocarcinoma and C6 rat glioma cell lines. We further studied the selectivity of
the compounds against the NIH/3T3 mouse embryonic fibroblast cell line. Cholinesterase inhibition effects of these
compounds were also investigated to measure the relationship between anticancer activity and cholinesterases.
Methods: The cytotoxic activities of these acquired thirteen final compounds were screened using MTT assay on
A549, C6, and NIH/3T3 cell lines. Cell proliferation ELISA, BRDU (colorimetric) assay was used to measure the
proliferation in replicative cells in which DNA synthesis occurs. Flow cytometric analysis was used to measure apoptotic
cell percentages, caspase 3 activity, and mitochondrial membrane depolarised cell percentages.
Results: Compounds 2e, 2f, and 2k were shown to be the most active antitumor agents with selective cytotoxicities
(the results for A549 were 76.58±6.43, 55.13±5.75, and 32.94±3.02 μM, respectively; and for C6 they were
86.48±3.60, 97.12±30.21, and 59.29±3.95 μM, respectively), high DNA synthesis inhibition rates and high apoptotic
cell percentages on both cell lines.
Conclusion: The results showed that compounds 2e, 2f, and 2k have potential anticancer activity against A549 and C6
cell lines.