Geiger Anne auteur aut IRD Soumana I. H. auteur aut IRD Tchicaya B. auteur aut IRD Rofidal V. auteur aut IRD Decourcelle M. auteur aut IRD Santoni V. auteur aut IRD Hem S. auteur aut IRD text journalArticle eng text/pdf born digital access The unicellular pathogenic protozoan Trypanosoma brucei gambiense is responsible for the chronic form of sleeping sickness. This vector-borne disease is transmitted to humans by the tsetse fly of the group Glossina palpalis, including the subspecies G. p. gambiensis, in which the parasite completes its developmental cycle. Sleeping sickness control strategies can therefore target either the human host or the fly vector. Indeed, suppression of one step in the parasite developmental cycle could abolish parasite transmission to humans, with consequences on the spreading of the disease. In order to develop this type of approach, we have identified, at the proteome level, events resulting from the tripartite interaction between the tsetse fly G. p. gambiensis, its microbiome, and the trypanosome. Proteomes were analyzed from four biological replicates of midguts from flies sampled 3 days post-feeding on either a trypanosome-infected (stimulated flies) or a non-infected (non-stimulated flies) bloodmeal. Over 500 proteins were identified in the midguts of flies from both feeding groups, 13 of which were shown to be differentially expressed in trypanosome-stimulated vs. non-stimulated flies. Functional annotation revealed that several of these proteins have important functions that could be involved in modulating the fly infection process by trypanosomes (and thus fly vector competence), including anti-oxidant and anti-apoptotic, cellular detoxifying, trypanosome agglutination, and immune stimulating or depressive effects. The results show a strong potential for diminishing or even disrupting fly vector competence, and their application holds great promise for improving the control of sleeping sickness. specialized sleeping sickness tsetse-bacteria-trypanosomes tripartite interactions trypanosome-associated global changes label-free quantification 052 080 020 6 art. 444 [12 p.] 2015 1664-302X https://www.documentation.ird.fr/hor/fdi:010064673 10.3389/fmicb.2015.00444 1664-302X [F B010064673] https://www.documentation.ird.fr/hor/fdi:010064673 https://www.documentation.ird.fr/intranet/publi/2015/07/010064673.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2015-07-29 2017-08-23 fdi:010064673 fre