Abstract
The unit describes protocols for isolating and characterizing extracellular vesicles (EVs) derived from human adipose tissue-derived mesenchymal stromal cells (MSCs). EVs are a mixed population of membrane-surrounded structures with overlapping composition and size. Advances made in recent years have led to a better understanding of the biological role of EVs. In particular, they can be considered key factors responsible for MSC-paracrine activity, mediating their anti-inflammatory effects towards innate immune cells, such as macrophages. The topics comprise description of the MSC-conditioned medium containing vesicles preparation, EV isolation, and characterization mainly by specifically set up flow cytometry and electron microscopy approaches, and in vitro methodologies involved in testing the EV anti-inflammatory capacity. The procedures described here can be easily reproduced and can be employed regardless of the type of progenitor cells used to secrete EVs. © 2018 by John Wiley & Sons, Inc.
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