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Title: Biophysical and Biochemical Comparison of Extracellular Vesicles Produced by Infective and Non-Infective Stages of Trypanosoma cruzi.
Authors: Retana Moreira, Lissette
Prescilla-Ledezma, Alexa
Cornet-Gomez, Alberto
Linares, Fátima
Jódar-Reyes, Ana Belén
Fernandez, Jorge
Ibarrola Vannucci, Ana Karina
De Pablos, Luis Miguel
Osuna, Antonio
Keywords: Trypanosoma cruzi;atomic force microscopy;epimastigote;extracellular vesicles;mechanical properties;proteins;trans-sialidase;trypomastigote;zeta-potential
metadata.dc.subject.mesh: Animals
Chagas Disease
Chlorocebus aethiops
Extracellular Vesicles
Host-Parasite Interactions
Life Cycle Stages
Mice, Inbred BALB C
Protozoan Proteins
Trypanosoma cruzi
Vero Cells
Issue Date: 13-May-2021
Abstract: Extracellular vesicles (EVs) are small lipid vesicles released by either any prokaryotic or eukaryotic cell, or both, with a biological role in cell-to-cell communication. In this work, we characterize the proteomes and nanomechanical properties of EVs released by tissue-culture cell-derived trypomastigotes (mammalian infective stage; (TCT)) and epimastigotes (insect stage; (E)) of Trypanosoma cruzi, the etiologic agent of Chagas disease. EVs of each stage were isolated by differential centrifugation and analyzed using liquid chromatography with tandem mass spectrometry (LC-MS/MS), dynamic light scattering (DLS), nanoparticle tracking analysis (NTA), electron microscopy and atomic force microscopy (AFM). Measurements of zeta-potential were also included. Results show marked differences in the surface molecular cargos of EVs between both stages, with a noteworthy expansion of all groups of trans-sialidase proteins in trypomastigote's EVs. In contrast, chromosomal locations of trans-sialidases of EVs of epimastigotes were dramatically reduced and restricted to subtelomeric regions, indicating a possible regulatable expression of these proteins between both stages of the parasite. Regarding mechanical properties, EVs of trypomastigotes showed higher adhesion compared to the EVs of epimastigotes. These findings demonstrate the remarkable surface remodeling throughout the life cycle of T. cruzi, which shapes the physicochemical composition of the extracellular vesicles and could have an impact in the ability of these vesicles to participate in cell communication in completely different niches of infection.
metadata.dc.identifier.doi: 10.3390/ijms22105183
Appears in Collections:Producción 2020

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