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© Christine Schmitt, Sophie Goyard, Jean-Marc Panaud
Trypanosoma vivax - forme sanguine. Responsable de la trypanosomose animale ou Nagana.
Publication : Nature communications

A multi-adenylate cyclase regulator at the flagellar tip controls African trypanosome transmission.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Nature communications - 16 Sep 2022

Bachmaier S, Giacomelli G, Calvo-Alvarez E, Vieira LR, Van Den Abbeele J, Aristodemou A, Lorentzen E, Gould MK, Brennand A, Dupuy JW, Forné I, Imhof A, Bramkamp M, Salmon D, Rotureau B, Boshart M,

Link to Pubmed [PMID] – 36114198

Link to DOI – 10.1038/s41467-022-33108-z

Nat Commun 2022 Sep; 13(1): 5445

Signaling from ciliary microdomains controls developmental processes in metazoans. Trypanosome transmission requires development and migration in the tsetse vector alimentary tract. Flagellar cAMP signaling has been linked to parasite social motility (SoMo) in vitro, yet uncovering control of directed migration in fly organs is challenging. Here we show that the composition of an adenylate cyclase (AC) complex in the flagellar tip microdomain is essential for tsetse salivary gland (SG) colonization and SoMo. Cyclic AMP response protein 3 (CARP3) binds and regulates multiple AC isoforms. CARP3 tip localization depends on the cytoskeletal protein FLAM8. Re-localization of CARP3 away from the tip microdomain is sufficient to abolish SoMo and fly SG colonization. Since intrinsic development is normal in carp3 and flam8 knock-out parasites, AC complex-mediated tip signaling specifically controls parasite migration and thereby transmission. Participation of several developmentally regulated receptor-type AC isoforms may indicate the complexity of the in vivo signals perceived.

https://pubmed.ncbi.nlm.nih.gov/36114198