title: Identification of total and differentially expressed excreted-secreted proteins from Trypanosoma congolense strains exhibiting different virulence and pathogenicity.
abstract: Animal trypanosomosis is a major constraint to livestock productivity in the tropics and has a significant impact on the life of millions of people globally (mainly in Africa, South America and south-east Asia). In Africa, the disease in livestock is caused mainly by Trypanosoma congolense, Trypanosoma vivax, Trypanosoma evansi and Trypanosoma brucei brucei. The extracellular position of trypanosomes in the bloodstream of their host requires consideration of both the parasite and its naturally excreted-secreted factors (secretome) in the course of pathophysiological processes. We therefore developed and standardised a method to produce purified proteomes and secretomes of African trypanosomes. In this study, two strains of T. congolense exhibiting opposite properties of both virulence and pathogenicity were further investigated through their secretome expression and its involvement in host-parasite interactions. We used a combined proteomic approach (one-dimensional SDS-PAGE and two-dimensional differential in-gel electrophoresis coupled to mass spectrometry) to characterise the whole and differentially expressed protein contents of secretomes. The molecular identification of differentially expressed trypanosome molecules and their correlation with either the virulence process or pathogenicity are discussed with regard to their potential as new diagnostic or therapeutic tools against animal trypanosomosis.
authors.affiliation: CIRAD UMR 17 Trypanosomes (UMR 177 IRD-CIRAD Interactions Hôtes-Vecteurs-Parasites dans les Trypanosomoses), TA A-17/G, Campus International de Baillarguet, 34398 Montpellier Cedex 5, France.
authors.forename: Pascal
authors.initials: P
authors.lastname: Grébaut
authors.forename: Paul
authors.initials: P
authors.lastname: Chuchana
authors.forename: Jean-Paul
authors.initials: JP
authors.lastname: Brizard
authors.forename: Edith
authors.initials: E
authors.lastname: Demettre
authors.forename: Martial
authors.initials: M
authors.lastname: Seveno
authors.forename: Géraldine
authors.initials: G
authors.lastname: Bossard
authors.forename: Patrick
authors.initials: P
authors.lastname: Jouin
authors.forename: Philippe
authors.initials: P
authors.lastname: Vincendeau
authors.forename: Zakaria
authors.initials: Z
authors.lastname: Bengaly
authors.forename: Alain
authors.initials: A
authors.lastname: Boulangé
authors.forename: Gérard
authors.initials: G
authors.lastname: Cuny
authors.forename: Philippe
authors.initials: P
authors.lastname: Holzmuller
mesh_terms: D000818:Animals; D015180:Electrophoresis, Gel, Two-Dimensional; D040901:Proteomics; D015800:Protozoan Proteins / Q000145:classification / Q000378:metabolism*; D013045:Species Specificity; D014348:Trypanosoma congolense / Q000378:metabolism* / Q000472:pathogenicity; D014353:Trypanosomiasis, African / Q000378:metabolism* / Q000469:parasitology; D014774:Virulence
chemical_list: D015800:Protozoan Proteins