Extracellular vesicles isolated from mesenchymal stromal cells modulate CD4+ T lymphocytes toward a regulatory profile
Cells, v. 9, n. 4, 1059, abr. 2020
Article
em En
| SES-SP, SESSP-IBPROD, SES-SP
| ID: bud-3020
Biblioteca responsável:
BR78.1
ABSTRACT
Mesenchymal stromal cells (MSCs) can generate immunological tolerance due to their regulatory activity in many immune cells. Extracellular vesicles (EVs) release is a pivotal mechanism by which MSCs exert their actions. In this study, we evaluate whether mesenchymal stromal cell extracellular vesicles (MSC-EVs) can modulate T cell response. MSCs were expanded and EVs were obtained by differential ultracentrifugation of the supernatant. The incorporation of MSC-EVs by T cells was detected by confocal microscopy. Expression of surface markers was detected by flow cytometry or CytoFLEX and cytokines were detected by RT-PCR, FACS and confocal microscopy and a miRNA PCR array was performed. We demonstrated that MSC-EVs were incorporated by lymphocytes in vitro and decreased T cell proliferation and Th1 differentiation. Interestingly, in Th1 polarization, MSC-EVs increased Foxp3 expression and generated a subpopulation of IFN-gama+/Foxp3+T cells with suppressive capacity. A differential expression profile of miRNAs in MSC-EVs-treated Th1 cells was seen, and also a modulation of one of their target genes, TGFbR2. MSC-EVs altered the metabolism of Th1-differentiated T cells, suggesting the involvement of the TGF-ß pathway in this metabolic modulation. The addition of MSC-EVs in vivo, in an OVA immunization model, generated cells Foxp3+. Thus, our findings suggest that MSC-EVs are able to specifically modulate activated T cells at an alternative regulatory profile by miRNAs and metabolism shifting
Texto completo:
1
Coleções:
06-national
/
BR
Base de dados:
SES-SP
/
SESSP-IBPROD
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Cells
Ano de publicação:
2020
Tipo de documento:
Article