Abstract
Background: Apoptosis is a route of cell death induced by a highly regulated intracellular program. An increase in apoptotic activity could lead to neurodegenerative pathologies, whereas a decrease in apoptotic activity could lead to uncontrolled cellular proliferation.
Objective: The aim of this research was to synthesize ten styrylheterocycle compounds, analogs of resveratrol, having a thiophene ring substituted in position 2- or 3- and a benzene ring with one or two hydroxy and methoxy groups. The compounds were evaluated for their cytotoxicity and apoptotic activity against the U-937 cancer cell line. Method: The experiments were conducted at 1000 μM, 250 μM, 100 μM, and 50 μM in order to measure apoptotic activity (% hypodiploid nuclei). The cytotoxicity was expressed as the concentration of a substance able to inhibit 50% of the metabolic activity in an MTS assay (maCC50), and as the percentage of cellular death (% Death Cell.) at 1000 μM and 100 μM. Results: Changing the phenyl group in a thienyl group occupying the 2- or 3-position almost always leads to an improvement in apoptosis. In addition, whereas the presence of a hydroxy group makes the molecules more cytotoxic than resveratrol, it also improves apoptosis. However, the presence of a methoxy group in the phenyl ring leads to collapse of the cytotoxicity, thereby allowing an increase in the analytical concentrations, and verifying that, at 1000 μM, the compounds 3b and 3c show apoptosis levels of 81% and 72%, respectively. Conclusion: We look forward to synthesizing other heterocyclic molecules to find even more active derivatives endowed with anti-cancer potential.Keywords: Styrylheterocycles, 2-thienyl-styrenes, 3-thienyl-styrenes, apoptosis, cytotoxicity, U-937 cell line.
Graphical Abstract
Call for Papers in Thematic Issues
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
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