Immunoregulatory effects of mesenchymal stem cell-derived extracellular vesicles on T lymphocytes

Andrea Del Fattore, Rosa Luciano, Luisa Pascucci, Bianca Maria Goffredo, Ezio Giorda, Margherita Scapaticci, Alessandra Fierabracci, Maurizio Muraca

Research output: Contribution to journalArticle

74 Citations (Scopus)

Abstract

The immunomodulatory activity of mesenchymal stem cells (MSCs) is largely mediated by paracrine factors. We have recently shown that the immunosuppressive effects of MSCs on B lymphocytes in peripheral blood mononuclear cell (PBMC) culture can be reproduced by extracellular vesicles (EVs) isolated from MSC culture supernatants. Here we investigated the effect of bone marrow-derived MSC-EVs on T cells on PBMC cultures stimulated with anti-CD3/CD28 beads. Stimulation increased the number of proliferating CD3+ cells as well as of regulatory T cells (Tregs). Coculture with MSCs inhibited the proliferation of CD3+ cells, with no significant changes in apoptosis. Addition of MSC-EVs to PBMCs did not affect proliferation of CD3+ cells, but induced the apoptosis of CD3+ cells and of the CD4+ subpopulation and increased the roliferation and the apoptosis of Tregs. Moreover, MSC-EV treatment increased the Treg/Teff ratio and the immunosuppressive cytokine IL-10 concentration in culture medium. The activity of indoleamine 2,3-dioxygenase (IDO), an established mediator of MSC immunosuppressive effects, was increased in supernatants of PBMCs cocultured with MSCs, but was not affected by the presence of MSC-EVs. MSC-EVs demonstrate immunomodulatory effects on T cells in vitro. However, these effects and the underlying mechanisms appear to be different from those exhibited by their cells of origin.

Original languageEnglish
Pages (from-to)2615-2627
Number of pages13
JournalCell Transplantation
Volume24
Issue number12
DOIs
Publication statusPublished - 2015

Fingerprint

T-cells
Stem cells
Mesenchymal Stromal Cells
T-Lymphocytes
Cell death
Immunosuppressive Agents
Cell culture
Cell Culture Techniques
Apoptosis
Blood Cells
Extracellular Vesicles
Blood
Eragrostis
Cell Proliferation
Indoleamine-Pyrrole 2,3,-Dioxygenase
Lymphocytes
Regulatory T-Lymphocytes
Coculture Techniques
Interleukin-10
Culture Media

Keywords

  • Extracellular vesicles(EVs)
  • Immunomodulation
  • Mesenchymal stem/stromal cells(MSCs)
  • Regulatory T cells

ASJC Scopus subject areas

  • Cell Biology
  • Transplantation
  • Biomedical Engineering

Cite this

Immunoregulatory effects of mesenchymal stem cell-derived extracellular vesicles on T lymphocytes. / Fattore, Andrea Del; Luciano, Rosa; Pascucci, Luisa; Goffredo, Bianca Maria; Giorda, Ezio; Scapaticci, Margherita; Fierabracci, Alessandra; Muraca, Maurizio.

In: Cell Transplantation, Vol. 24, No. 12, 2015, p. 2615-2627.

Research output: Contribution to journalArticle

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