“…on the luminal side of the BBB and degrading ecto-or endo-enzymes of the cytoplasm of endothelial cells prior to penetration into the brain (12). SLNs composed of biodegradable saturated lipids like HSPC are found to be biocompatible (13,14) and prolong blood circulation life because of enhanced in vivo stability (15,16). Pioneering characteristics of SLNs also extend many advantages such as controlled drug release (17), drug targeting and low biotoxicity, high drug payload, easy scale up, and amenability to sterilization (18,19).…”