Fig. 8
From: The blood–brain barrier: Structure, regulation and drug delivery

Iron oxide nanoparticles, silica nanomaterials, biomimetic nanomaterials and Cas9/RNA nanoparticles for brain-targeted drug delivery. a Schematic illustration of synthesis of Fe3O4 nanoparticles-PLGA-perfluorohexane (PFH) nanoparticles with CREKA peptides and b, c representative TEM images of Fe3O4-PLGA-PFH-CREKA and PLGA-PFH-CREKA nanoparticles, and d their elemental mapping results. Reproduced with permission. Copyright 2019, American Chemical Society. e Schematic illustration of synthesis of HA-MMSN-1F12 nanoparticles and f particle size and g TEM images of HA-MMSN and HA-MMSN-1F12 nanoparticles. Reproduced with permission. Copyright 2022, Ivyspring International Publisher. h Schematic illustration of synthesis of cell membrane-coated nanostructures and its targeted synergistic therapy of glioblastoma. Reproduced with permission. Copyright 2022, Nature Publishing Group. i Schematic illustration of synthesis of CRISPR-Cas9 nanocapsules and j their TEM images and k size distribution. Reproduced with permission. Copyright 2022, American Association for the Advancement of Science