Murine adipose-derived mesenchymal stromal cell vesicles: in vitro clues for neuroprotective and neuroregenerative approaches

Cytotherapy
A FarinazzoBruno Bonetti

Abstract

Adipose-derived mesenchymal stromal cells (ASC) are known to promote neuroprotection and neuroregeneration in vitro and in vivo. These biological effects are probably mediated by paracrine mechanisms. In recent years, nanovesicles (NV) and microvesicles (MV) have been shown to play a major role in cell-to-cell communication. We tested the efficacy of NV and MV obtained from ASC in mediating neuroprotection and neuroregeneration in vitro. We exposed neuronal cells (both cell line and primary cultures) to oxidative stress in the presence or not of NV or MV. In this experimental setting, we found that low doses of NV or MV protected neurons from apoptotic cell death. We then assessed the neuroregenerative effect of NV/MV in cerebellar slice cultures demyelinated with lysophosphatidylcholine. We observed that low but not higher doses of NV and MV increased the process of remyelination and activated nestin-positive oligodendroglial precursors. Taken together, our data in vitro support the relevance of ASC vesicles as a source of protecting and regenerating factors that might modulate the microenvironment in neuro-inflammatory as well as in neurodegenerative disorders. The present findings may suggest that stromal cell-derived vesicl...Continue Reading

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