[Research progress of extracellular vesicles in hepatic fibrosis].

Liver fibrosis is a pathophysiological process characterized by abnormal accumulation of connective tissues in the liver caused by chronic liver injuries, in which the activation and migration of hepatic stellate cells (HSCs) play a central role. Extracellular vesicles (EVs) are a class of nanoscale, bilayer lipid enveloped vesicles secreted by almost all cells. EVs are of great interest in liver pathology because they have been found to mediate the communication between cells and regulate cellular microenvironment via horizontal transfer of their cargoes. EVs carry bioactive cargoes including proteins, lipids and RNA molecules, and are involved in the activation of HSCs during liver fibrogenesis.