Abstract: Exosomes are small (30~150 nm) vesicles of endocytic origin produced by all cells under physiological and pathological conditions,with the potential to transfer proteins, lipids, small RNAs, messenger RNAs, or DNA between cells. Exosomes, regulate many pathophysiological processes, including immune responses and inflammatory reactions, tumors, and infections, which play a central role in cellular communication.

Key words: exosomes, sepsis, biological function, the prospects for application