Engineered cell membrane-cloaked metal-organic framework nanocrystals for intracellular cargo delivery

This investigation demonstrates the development and functionality of cell membrane-cloaked UiO-67 nanosized metal-organic frameworks (NMOFs), which are engineered for precise intracellular delivery of encapsulated cargoes. Utilizing the robust and porous nature of UiO-67, we enveloped these NMOFs with fusogenic cell membrane-derived nanovesicles (FCSMs) sourced from adenocarcinomic human alveolar basal epithelial (A549) cells. This biomimetic coating enhances biocompatibility and leverages the homotypic targeting capabilities of the cell-derived coatings, facilitating direct cytoplasmic delivery and avoiding endolysosomal entrapment. Our nanoplatform exhibited high efficiency in loading and releasing two model cargoes: cresyl violet (CV), a staining agent, and carboplatin (CbPt), a chemotherapeutic agent. This approach demonstrated substantial potential in drug delivery in both 2D cell cultures and 3D spheroids. This study underscores the enhanced cellular uptake facilitated by the engineered biomimetic shell and highlights the system's capacity for sustained release, offering a promising strategy for targeted drug delivery.