title: Polylactic acid nanoparticles targeted to brain microvascular endothelial cells.
abstract: In this work, blank polylactic acid (PLA) nanoparticles with unstained surface were prepared by the nano-deposition method. On the basis of the preparation, the effect of surface modification on brain microvascular endothelial cells (BMECs) targeting was examined by in vivo experiments and fluorescence microscopy. The results showed that PLA nanoparticles are less toxic than PACA nanoparticles but their BMECs targeting is similar to PACA nanoparticles. The experiments suggest that drugs can be loaded onto the particles and become more stable through adsorption on the surface of PLA nanoparticles with high surface activity. The surface of PLA nanoparticles was obviously modified and the hydrophilicity was increased as well in the presence of non-ionic surfactants on PLA nanoparticles. As a targeting moiety, polysobate 80 (T-80) can facilitate BMECs targeting of PLA nanoparticles.
authors.affiliation: Institute of Hematology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
authors.forename: Huafang
authors.initials: H
authors.lastname: Wang
authors.forename: Yu
authors.initials: Y
authors.lastname: Hu
authors.forename: Wangqiang
authors.initials: W
authors.lastname: Sun
authors.forename: Changsheng
authors.initials: C
authors.lastname: Xie
mesh_terms: D000818:Animals; D001921:Brain / Q000098:blood supply* / Q000187:drug effects; D002196:Capillaries / Q000166:cytology; D002199:Capillary Permeability / Q000187:drug effects; D016503:Drug Delivery Systems; D004730:Endothelium, Vascular / Q000166:cytology*; D019344:Lactic Acid / Q000494:pharmacology*; D051379:Mice; D008815:Mice, Inbred Strains; D008856:Microscopy, Fluorescence; D053758:Nanoparticles; D011091:Polyesters; D011108:Polymers / Q000494:pharmacology*
chemical_list: D011091:Polyesters; D011108:Polymers; D019344:Lactic Acid; C033616:poly(lactide)