Fast acting allosteric phosphofructokinase inhibitors block trypanosome glycolysis and cure acute African trypanosomiasis in mice

Iain W. McNae, James Kinkead, Divya Malik, Li-Hsuan Yen, Martin K. Walker, Chris Swain, Scott P. Webster, Nick Gray, Peter M. Fernandes, Elmarie Myburgh, Elizabeth A. Blackburn, Ryan Ritchie, Carol Austin, Martin A. Wear, Adrian J. Highton, Andrew J. Keats, Antonio Vong, Jacqueline Dornan, Jeremy C. Mottram, Paul A. M. MichelsSimon Pettit, Malcolm D. Walkinshaw

Research output: Contribution to journalArticlepeer-review

Abstract

The parasitic protist Trypanosoma brucei is the causative agent of Human African Trypanosomiasis, also known as sleeping sickness. The parasite enters the blood via the bite of the tsetse fly where it is wholly reliant on glycolysis for the production of ATP. Glycolytic enzymes have been regarded as challenging drug targets because of their highly conserved active sites and phosphorylated substrates. We describe the development of novel small molecule allosteric inhibitors of trypanosome phosphofructokinase (PFK) that block the glycolytic pathway resulting in very fast parasite kill times with no inhibition of human PFKs. The compounds cross the blood brain barrier and single day oral dosing cures parasitaemia in a stage 1 animal model of human African trypanosomiasis. This study demonstrates that it is possible to target glycolysis and additionally shows how differences in allosteric mechanisms may allow the development of species-specific inhibitors to tackle a range of proliferative or infectious diseases.
Original languageEnglish
Article number1052
Number of pages10
JournalNature Communications
Volume12
Issue number1
DOIs
Publication statusPublished - 16 Feb 2021

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