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Histidinal-Based Potent Antimalarial Agents. | LitMetric

Histidinal-Based Potent Antimalarial Agents.

ChemMedChem

Organic Chemistry Division, CSIR - National Chemical Laboratory, Dr. Homi Bhabha Road, 411008, Pune, India.

Published: May 2023

AI Article Synopsis

Article Abstract

Herein we report the synthesis and evaluation of peptide-histidinal conjugated drug scaffolds, which have the potential to target the hemoglobin-degrading proteases falcipain-2/3 from the human malaria parasite. Scaffolds with various substitutions were tested for antimalarial activity, and compounds 8 g, 8 h, and 15 exhibited EC50 values of ∼0.018 μM, ∼0.069 μM, and ∼0.02 μM, respectively. Structure-based docking studies on falcipain-2/3 proteases (PDB:2GHU and PDB:3BWK) revealed that compounds 8 g, 8 h, and 15 interact strongly with binding sites of falcipain-2/3 in a substrate-like manner. In silico ADME studies revealed that the molecules of interest showed no or minimal violations of drug-likeness parameters. Further, phenotypic assays revealed that compound 8 g and its biotinylated version inhibit hemoglobin degradation in the parasite food vacuole. The identification of falcipain-2/3 targeting potent inhibitors of the malaria parasite can serve as a starting point for the development of lead compounds as future antimalarial drug candidates.

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Source
http://dx.doi.org/10.1002/cmdc.202200709DOI Listing

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