title: Functional characteristics of LDL particles derived from various LDL-apheresis techniques regarding LDL-drug-complex preparation.
abstract: Low density lipoproteins (LDL) have the potential to serve as cell specific drug carriers. The LDL may be derived in large quantities from LDL-apheresis procedures. Therefore, LDL particles isolated from the waste of three types of LDL-apheresis were investigated concerning their functional integrity in cell transport tests. LDL particles obtained from dextran sulfate-apheresis (DSA) and heparin extracorporeal lipoprotein precipitation (HELP)-LDL-apheresis are capable of specific internalization into HepG2 cells via the apoB receptor pathway. DSA-LDL-apoB appears to be split into two fragments as judged by SDS gel-polyacrylamide gel electrophoresis without changing transport behavior. Membrane differential filtration (MDF)- and HELP-derived LDL particles showed parallel transport behavior and electrophoretic mobility. Acetylated LDL particles obtained from MDF-LDL-apheresis and from blood donation plasma were transported into P388-macrophages via the scavenger receptor pathway. The results confirm the use of LDL particles from LDL-apheresis as substrates for transformation into drug carriers.
authors.affiliation: Freie Universität Berlin, Institut für Biochemie, FRG.
authors.forename: H W
authors.initials: HW
authors.lastname: Schultis
authors.forename: H
authors.initials: H
authors.lastname: von Baeyer
authors.forename: H
authors.initials: H
authors.lastname: Neitzel
authors.forename: E
authors.initials: E
authors.lastname: Riedel
mesh_terms: D000818:Animals; D001692:Biological Transport; D004337:Drug Carriers; D004591:Electrophoresis, Polyacrylamide Gel; D006801:Humans; D007700:Kinetics; D008055:Lipids / Q000032:analysis; D008077:Lipoproteins, LDL / Q000378:metabolism*; D008264:Macrophages / Q000378:metabolism; D051379:Mice
chemical_list: D004337:Drug Carriers; D008055:Lipids; D008077:Lipoproteins, LDL