Abstract
Exosomes are small extracellular vesicles that can be secreted by any type of cell, released into almost all biological fluids, and extracted from anybody fluid such as blood, urine, saliva, and amniotic fluid. The theranostic role of exosome in liver diseases has been widely studied in recent years. In this review, we briefly introduce the biological characteristics of exosomes and then focus on the theranostics of exosomes in liver diseases, specifically gene delivery associated with liver diseases.