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© Jean-Claude Antoine
Leishmania mexicana amazonensis
Publication : Communications biology

Trifloxystrobin blocks the growth of Theileria parasites and is a promising drug to treat Buparvaquone resistance.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Communications biology - 15 Nov 2022

Villares M, Lourenço N, Berthelet J, Lamotte S, Regad L, Medjkane S, Prina E, Rodrigues-Lima F, Späth GF, Weitzman JB

Link to Pubmed [PMID] – 36380082

Link to DOI – 10.1038/s42003-022-03981-x

Commun Biol 2022 Nov; 5(1): 1253

Theileria parasites are responsible for devastating cattle diseases, causing major economic losses across Africa and Asia. Theileria spp. stand apart from other apicomplexa parasites by their ability to transform host leukocytes into immortalized, hyperproliferating, invasive cells that rapidly kill infected animals. The emergence of resistance to the theilericidal drug Buparvaquone raises the need for new anti-Theileria drugs. We developed a microscopy-based screen to reposition drugs from the open-access Medicines for Malaria Venture (MMV) Pathogen Box. We show that Trifloxystrobin (MMV688754) selectively kills lymphocytes or macrophages infected with Theileria annulata or Theileria parva parasites. Trifloxystrobin treatment reduced parasite load in vitro as effectively as Buparvaquone, with similar effects on host gene expression, cell proliferation and cell cycle. Trifloxystrobin also inhibited parasite differentiation to merozoites (merogony). Trifloxystrobin inhibition of parasite survival is independent of the parasite TaPin1 prolyl isomerase pathway. Furthermore, modeling studies predicted that Trifloxystrobin and Buparvaquone could interact distinctly with parasite Cytochrome B and we show that Trifloxystrobin was still effective against Buparvaquone-resistant cells harboring TaCytB mutations. Our study suggests that Trifloxystrobin could provide an effective alternative to Buparvaquone treatment and represents a promising candidate for future drug development against Theileria spp.