Hybrid Nanoparticles of Extracellular Vesicles and Gemcitabine Prodrug-Loaded Liposomes with Enhanced Targeting Ability for Effective PDAC Treatment.

Liposomes are applied to various anticancer treatments as representative drug delivery carriers. However, liposomes do not have their own targeting properties; therefore, there are limitations in drug delivery to specific tissues or cells. High targetability in drug delivery is an important factor in improving bioavailability and drug efficacy and reducing side effects; recent research has been actively investigated to modify the surface of liposomes to give them specific functions. In this study, we studied a drug delivery system for anticancer treatment that enhances targeting ability through fusion with exosomes on the surface of liposomes. We designed exosome-liposome hybrid nanoparticles loaded with a gemcitabine prodrug as a treatment for pancreatic ductal adenocarcinoma (PDAC). Membrane fusion with exosomes shows excellent targeting ability to pancreatic cancer cells due to intrinsic targeting ability and expansion of the macropinocytosis pathway.