Evaluation of oxindole derivatives as a potential anticancer agent against breast carcinoma cells: In vitro, in silico, and molecular docking study

In this study we have performed the in vitro anticancer activity of spiro oxindole derivatives against MCF-7 (human Adreno carcinoma) and MDA-MB-231 (triple negative breast cancer) cell lines to propose a possible role of these derivatives in the treatment of cancer. Compound 6, which has an N-benzyl substitution with a chloro group on the indolin-2-one scaffold, had the most potent activity against MCF-7 (3.55 ± 0.49 μM) and MDA-MB-231 (4.40 ± 0.468 μM) of all the synthesized molecules. A normal mouse embryonic fibroblast (NIH/3 T3) cell line was used to test the cellular toxicity of these derivatives. The results showed that none of the compounds were cytotoxic to normal cells. In addition, pharmacokinetic (ADME) and toxicity study profiles were predicted in silico. All the synthesized derivatives (1 to 7) demonstrated the necessary physicochemical properties for bioavailability. Finally, in vitro results of promising compound 6 were validated using molecular docking and dynamic simulation studies, which revealed their binding affinities and conformational stability in the binding cavity. Thus, these derivatives may serve as lead structures for a new generation of anticancer agents.

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