INVESTIGATION OF THE INHIBITION MECHANISM OF SOME HDAC8 INHIBITORS THROUGH COMPUTATIONAL METHODS

Objective: Cancer remains one of the leading causes of death around the globe. Current treatment methods are known for their side effects and resistance development. Therefore, there is a growing need for novel therapeutic strategies that are more effective with lower toxicity. Histone deacetylase 8 (HDAC8) overexpression has been linked to poor prognosis in cancer. Hence, HDAC8 is an attractive target in developing new anticancer agents. The objective of this study has been to elucidate mechanisms of action for some selected HDAC8 inhibitors through computational methods.Material and Method: In this study, binding modes of selected HDAC8 inhibitors to the enzyme structure were explored through docking via LibDock and molecular dynamics (MD) simulation via GROMACS 2024.Result and Discussion: The docking study disclosed that compound d exhibited the highest binding potential to the HDAC8 structure. The roles of hydroxamic acid, amide group, and aromatic rings in the HDAC8 inhibition were affirmed by the docking study. His180 and Tyr306 residues were found to be critical residues in the binding. The MD simulation study disclosed that HDAC8-inhibitor complexes procured from the docking were stable during the 200 ns simulation.