GSE161474
Dissecting the effects of preconditioning with inflammatory cytokines and hypoxia on the angiogenic potential of Mesenchymal Stromal Cell (MSC)-derived soluble proteins and Extracellular Vesicles (EVs)
Mesenchymal stromal cells (MSCs) are characterized by a regulatory phenotype and respond promptly to the environmental signals modulating their secretory activity. An appropriate preconditioning may induce MSCs to release secretomes with an enhanced regenerative potential. However, it fails to take into account that secretomes are composed by both soluble factors and extracellular vesicles (EVs), whose functions could be altered differently by the preconditioning approach. Here we demonstrate that the MSC secretome is strongly modulated by the simultaneous stimulation with hypoxia and pro-inflammatory cytokines, used to mimic the harsh environment present at the site of injury. The cargo content (in terms of miRNAs) of the corresponding EV fractions was less sensitive to the influence of the external stimuli. Overall design: miRNAseq of EVs obtained from human MSC treated in 4 different conditions. MSC are derived from 3 donors.