| abstract |
Disclosed herein is a pH activated nanoparticle that can be used to deliver labile therapeutic or diagnostic agents to the cytoplasm of cells. These nanoparticles allow the agents to escape the endosome by releasing a gas in an amount effective to disrupt the endosome and release the agents into the cytoplasm. The disclosed nanoparticles have a shell, such as a phospholipid bilayer shell, and a core containing a gas bound to a substrate by a pH sensitive interaction. Also disclosed herein is are methods for delivering a pH sensitive cargo to the cytoplasm of a cell, treating triple negative breast cancer (TNBC) in a subject, and treating HER2+ breast cancer in a subject. |