Background:
Results of our previous studies on antiglycation activity, and the non-cytotoxicity of 2-mercapto benzothiazoles, prompted us to further widen our investigation towards the identification of leads against diabetes mellitus.
Method:
33 derivatives of 2-mercapto benzothiazoles 1-33 were evaluated for in vitro α-glucosidase inhibitory activity. Mode of inhibition was deduced by kinetic studies. To predict the interactions of 2-mercapto benzothiazole derivatives 1-33 with the binding pocket of α-glucosidase enzyme, molecular docking studies were performed on the selected inhibitors.
Results:
Compounds 2-4, 6-7, 9-26, 28 and 30 showed many folds potent α-glucosidase inhibitory activity in the range of IC50 = 31.21-208.63 μM, as compared to the standard drug acarbose (IC50 = 875.75 ± 2.08 μM). It was important to note that except derivative 28, all other derivatives were also found previously to have antiglycating potential in the range of IC50 = 187.12-707.21 μM.
Conclusion:
A number of compounds were identified as dual nature as antiglycating agent, and α-glucosidase inhibitors. These compounds may serve as potential lead candidates for the management of diabetes mellitus.
N
-Myristoyltransferase (NMT) is a cytosolic monomeric enzyme involved
in the allocation of the myristoyl group to the aminoterminal of glycine
in several viral and eukaryotic cellular proteins. NMT has been validated
as a potential drug target against kinetoplastid for parasitic protozoa.
A multistep virtual screening protocol based on the pharmacophore
modeling, molecular docking, and molecular dynamics simulation was
carried out. Initially, Maybridge database was virtually screened
via a validated pharmacophore model. The effective pharmacophore models
were accompanied with exclusion volumes to improve their receiver
operating characteristic curve to identify potential NMT inhibitors.
The hits identified as actives based on the 3D-pharmacophore model
were evaluated by molecular docking studies. In stepwise screening,
six compounds were shortlisted for the dynamic simulation to get insights
into their binding mode. In conclusion, this study provides fundamental
information about the architecture of the binding site and some crucial
residues that may provide insights into the development of new antiparasitic
agents.
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