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Targeting malaria parasites with novel derivatives of azithromycin.

Burns AL, Sleebs BE, Gancheva M, McLean KT, Siddiqui G, Venter H, Beeson JG, O'Handley R, Creek DJ, Ma S, Frölich S, Goodman CD, McFadden GI, Wilson DW

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  • Journal Frontiers in cellular and infection microbiology

  • Published 30 Nov 2022

  • Volume 12

  • Pagination 1063407

  • DOI 10.3389/fcimb.2022.1063407

Abstract

two mechanisms: 'delayed death' by inhibiting the bacterium-like ribosomes of the apicoplast, and 'quick-killing' that kills rapidly across the entire blood stage development.

(a monkey parasite that frequently infects humans).

did not show improvement over azithromycin, highlighting the specific improvement in antimalarial quick-killing activity. Metabolomic profiling of parasites subjected to the most potent compound showed a build-up of non-haemoglobin derived peptides that was similar to chloroquine, while also exhibiting accumulation of haemoglobin-derived peptides that was absent for chloroquine treatment.

The azithromycin analogues characterised in this study expand the structural diversity over previously reported quick-killing compounds and provide new starting points to develop azithromycin analogues with quick-killing antimalarial activity.