Identifikace, exprese a charakterizace antigenů slinných žláz Phlebotomus orientalis

Šíma, Michal

Sand flies (Diptera: Psychodidae) are vectors of Leishmania spp. (Kinetoplastida: Trypanosomatidae), medically and veterinary important parasites causing leishmaniasis. These protozoans are inoculated into the host during blood-feeding together with the vector saliva. Salivary components are crucial for sand fly female blood-sucking but also play a major role in the initial stage of parasite development. It was demonstrated that this rich mixture of proteins performs different functions after its injection into the host like hydrolyzing ATP and ADP, binding biogenic amines, and others which inhibits the haemostatic reaction and modulate the immune system thus enables the successful feeding. So far, cDNA salivary transcriptomes have been constructed for twelve sand fly species and we added another one - Phlebotomus orientalis, the main vector of Leishmania donovani, a causative agent of human visceral leishmaniasis in East African countries. We described members of thirteen protein families which corresponded with previously published salivary cDNA libraries of other sand fly species and showed the main salivary antigens using sera of experimentally bitten mice and naturally exposed dogs. Specific IgG antibody response is induced against sand fly salivary proteins in repeatedly bitten hosts....

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