Proteomic study of activated Taenia solium oncospheres

• Published in: Molecular and biochemical parasitology Vol. 171; no. 1; pp. 32 - 39
• Main Authors: Santivañez, S.J., Hernández-González, A., Chile, N., Oleaga, A., Arana, Y., Palma, S., Verastegui, M., Gonzalez, A.E., Gilman, R., Garcia, H.H., Siles-Lucas, M.
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01-05-2010; Amsterdam: Elsevier
• Subjects: Activated; Animals; Blotting, Western; Chromatography, Liquid; Helminth Proteins - analysis; Oncospheres; Proteome; Proteome - analysis; Proteomics; Taenia solium; Taenia solium - chemistry; Tandem Mass Spectrometry; Activated; Proteome; Oncospheres; Taenia solium
• ISSN: 0166-6851; 1872-9428
• DOI: 10.1016/j.molbiopara.2010.01.004

By proteome techniques we identify a set of
Taenia solium oncospheral proteins and further characterize the parasite 14-3-3, providing new information about the host–parasite relationship.
Taenia solium cysticerci are a major cause of human seizures and epilepsy in the world. In the gastrointestinal tract of infected individuals, taeniid eggs release the oncospheres, which are then activated by intestinal stimuli, getting ready to penetrate the gut wall and reach distant locations where they transform in cysticerci. Information about oncospheral molecules is scarce, and elucidation of the oncosphere proteome could help understanding the host–parasite relationship during the first steps of infection. In this study, using liquid chromatography and tandem mass spectrometry (LC–MS/MS) analysis, we could identify a set of oncospheral proteins involved in adhesion, protein folding, detoxification and proteolysis, among others. In addition, we have characterized one of the identified molecules, the parasite 14-3-3, by immunoblot and immunolocalization. The identification of these oncospheral proteins represents the first step to elucidate their specific roles in the biology of the host–parasite relationship.