Antimalarial histone deacetylase inhibitors containing cinnamate or NSAID components
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Andrews, Katherine T
Tran, Truc L
Lucke, Andrew J
Reid, Robert C
Fairlie, David P
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Abstract
Malaria is the most lethal parasite-mediated tropical infectious disease, killing 1-2 million people each year. An emerging drug target is the enzyme Plasmodium falciparum histone deacetylase 1 (PfHDAC1). We report 26 compounds designed to bind the zinc and exterior surface around the entrance to the active site of PfHDAC1, 16 displaying potent in vitro antimalarial activity (IC50 <100 nM) against P. falciparum. Selected compounds were shown to cause hyperacetylation of P. falciparum histones and be >10-fold more cytotoxic towards P. falciparum than a normal human cell type (NFF). Twenty-two inhibitors feature cinnamic acid derivatives or non-steroidal anti-inflammatory drugs (NSAIDs) as HDAC-binding components. A homology model of PfHDAC1 enzyme gives new insights to interactions likely made by some of these inhibitors. Results support PfHDAC1 as a promising new antimalarial drug target.
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Bioorganic & Medicinal Chemistry Letters
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20
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23
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Medicinal and biomolecular chemistry
Medicinal and biomolecular chemistry not elsewhere classified
Organic chemistry
Pharmacology and pharmaceutical sciences