Dataset Information

Extracellular vesicules proteomic profile of P. brasiliensis yeasts recovered from granulomatous lesions of C57BL/6 WT mice

ABSTRACT: C57BL/6 WT mice were infected with 1x10^6 P. brasiliensis yeasts. After 8 weeks and 12 weeks of infection the animals were euthanized and the granulomatous lesions were recovered. Then, the yeasts were recovered and cultivated in a rich medium. After cultivation the yeasts extracellular vesicles were isolated and their proteins extracted, digested with trypsin and analyzed by LC-MS/MS. The data show an induced metabolism by the recovered yeasts, with a higher abundance of proteins related to energy metabolism, lipid metabolism, nucleotide metabolism, amino acid metabolism. Additionally there is a higher abundance of some virulence factor.

INSTRUMENT(S):

ORGANISM(S): Paracoccidioides Brasiliensis (strain Pb18)

SUBMITTER: Bruno Borges

LAB HEAD: Flávio Vieira Loures

PROVIDER: PXD046549 | Pride | 2024-05-23

REPOSITORIES: Pride

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			Action	DRS
	16fev23_BrunoBorges_amostra1_1ug.raw	Raw
	16fev23_BrunoBorges_amostra2_1ug.raw	Raw
	16fev23_BrunoBorges_amostra3_1ug.raw	Raw
	23fev23_BrunoBorges_amostra4_1ug.raw	Raw
	23fev23_BrunoBorges_amostra5_1ug.raw	Raw

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Publications

Extracellular vesicles from virulent P. brasiliensis induce TLR4 and dectin-1 expression in innate cells and promote enhanced Th1/Th17 response.

Montanari Borges Bruno B Gama de Santana Monique M Willian Preite Nycolas N de Lima Kaminski Valéria V Trentin Gabriel G Almeida Fausto F Vieira Loures Flávio F

Virulence 20240321 1

Extracellular vesicles (EVs) are membrane-enclosed nanoparticles that transport several biomolecules and are involved in important mechanisms and functions related to the pathophysiology of fungal diseases. EVs from Paracoccidioides brasiliensis, the main causative agent of Paracoccidioidomycosis (PCM), modulate the immune response of macrophages. In this study, we assessed the EVs proteome from a virulent P. brasiliensis isolated from granulomatous lesions and compared their immun ...[more]

PMID: 38511558

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Project description:Background: Acute coronary syndromes (ACS) are associated with aberrant gene expression and epigenetic mechanisms. In particular, de novo DNA methylation is typically linked to gene silencing, but its role in heart disease remains not fully understood. Extracellular vesicles (EVs) are active components in cellular communication for their ability to carry a plethora of signalling biomolecules, thus representing a promising new diagnostic/therapeutic approach in cardiovascular diseases (CVDs). Indeed, there is the need of novel biomarkers for ACS prediction and timely detection. Purpose: We hypothesized that specific epigenetic signals can be carried by EVs. In this regard, we isolated and characterized circulating EVs from ACS patients and evaluated their potential role to influence DNA methylation in target cells. Methods: Circulating EVs were recovered, by ultracentrifugation, from plasma samples of 19 ACS patients and 50 healthy subjects (HS). Nanoparticle tracking analysis (NTA) and western blot (WB) were used to confirm the EVs integrity and purity. Peripheral blood mononuclear cells (PBMCs) of volunteer donors were treated with both ACS and HS derived EVs and genomic DNA was extracted to perform epigenome wide analysis through Reduced Representation Bisulfite Sequencing. ShinyGO, PANTHER, and STRING tools were interrogated to perform GO and PPI network analyses. Flow Cytometry, qRT-PCR, and WB analysis were also performed to evaluate and validate both intra-vesicular and intra-cellular signals. Results: Plasma ACS-derived EVs showed a significant up-regulation of DNA methyltransferases (DNMTs) gene expression levels as compared to HS (P<0.001). Specifically, de novo methylation transcripts, as DNMT3A and DNMT3B were significantly increased in plasma ACS-EVs. DNA methylation analysis of PBMCs from volunteer donors treated with HS- and ACS-derived EVs showed that RNF166 and CCND3 genes resulted the most hyper- and hypo-methylated, respectively, after by ACS-EV treatment. In addition, PPI network analysis specifically evidenced the subnetwork with SRC, as a hub gene, connecting it to NOTCH1, FOXO3, CDC42, IKBKG, RXRA, DGKG, known as important genes already involved in the onset of CVDs. Surprising, other novel genes, BAIAP2, SYP, CHL1, and SHB, which were hypomethylated, were found significantly overexpressed in PBMCs (P<0.005), underlying the fundamental modulating properties of EV cargo in atherosclerosis. Conclusions: These findings support the significant role of ACS plasma-derived EVs, inducing de novo DNA methylation signals, and modulating specific signaling pathways in target cells.

Dataset Information

Extracellular vesicules proteomic profile of P. brasiliensis yeasts recovered from granulomatous lesions of C57BL/6 WT mice

Dataset's files

Publications

Extracellular vesicles from virulent <i>P. brasiliensis</i> induce TLR4 and dectin-1 expression in innate cells and promote enhanced Th1/Th17 response.

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