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Title: Proteomic profile of extracellular vesicles released by Lactiplantibacillus plantarum BGAN8 and their internalization by non‑polarized HT29 cell line
Author: Bajic, Svetlana Sokovic
Cañas Pacheco, María Alexandra
Tolinacki, Maja
Badía Palacín, Josefa
Sánchez, Borja
Golic, Natasa
Margolles, Abelardo
Baldomà Llavinés, Laura
Ruas-Madiedo, Patricia
Keywords: Interacció cel·lular
Cell interaction
Issue Date: 11-Dec-2020
Publisher: Nature Publishing Group
Abstract: In recent years the role of extracellular vesicles (EVs) of Gram-positive bacteria in host-microbe cross-talk has become increasingly appreciated, although the knowledge of their biogenesis, release and host-uptake is still limited. The aim of this study was to characterize the EVs released by the dairy isolate Lactiplantibacillus plantarum BGAN8 and to gain an insight into the putative mechanism of EVs uptake by intestinal epithelial cells. The cryo-TEM observation undoubtedly demonstrated the release of EVs (20 to 140nm) from the surface of BGAN8, with exopolysaccharides seems to be part of EVs surface. The proteomic analysis revealed that the EVs are enriched in enzymes involved in central metabolic pathways, such as glycolysis, and in membrane components with the most abundant proteins belonging to amino acid/peptide ABC transporters. Putative internalization pathways were evaluated in time-course internalization experiments with non-polarized HT29 cells in the presence of inhibitors of endocytic pathways: chlorpromazine and dynasore (inhibitors of clathrin-mediated endocytosis-CME) and filipin III and nystatin (disrupting lipid rafts). For the first time, our results revealed that the internalization was specifically inhibited by dynasore and chlorpromazine but not by filipin III and nystatin implying that one of the entries of L. plantarum vesicles was through CME pathway.
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It is part of: Scientific Reports, 2020, vol. 10 , num. 1, p. 21829
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ISSN: 2045-2322
Appears in Collections:Articles publicats en revistes (Bioquímica i Fisiologia)

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