Resumen
Extracellular vesicles (EVs) are heterogenous in size, cargo, and mechanism of biogenesis. While the mechanism of formation of small EVs, such as exosomes, has been widely investigated, little is known about the pathobiology of large EVs. We identify here a microRNA that alters cellular vesicologenesis increasing shedding of large EVs and slightly reducing shedding of small EVs. We also demonstrate that this microRNA, miR1227, targets SEC23A to promote this phenotype. Importantly, large EVs are released by cells undergoing a mesenchymal-amoeboid transition that functionally translates into a more metastatic phenotype.