title: Studies on bioadhesive PLGA nanoparticles: A promising gene delivery system for efficient gene therapy to lung cancer.
abstract: The study aimed to design novel bioadhesive PLGA nanoparticles for efficient gene delivery to lung cancer cells. The bioadhesive agent and stabilizer, Carbopol 940 was chosen to establish bioadhesive PLGA nanoparticles and Pluronic F68, Pluronic F127 stabilized PLGA nanoparticles were formulated as control. The effects of different surfactants on the physicochemical and biological characterizations of PLGA nanoparticles were compared. All the obtained nanoparticles showed negative surface charge, similar spherical morphology, a relatively narrow particle size distribution, and lower cytotoxicity to A549 cells comparing with Lipofectamine 2000. Carbopol stabilized nanoparticles hold advantages in DNA-binding efficiency (>80%) at an optimal Carbopol concentration, DNA protection from enzymatic degradation in vitro release and better buffering capacity. Most importantly, higher transfection efficiency in A549 cells was observed comparing to Pluronics stabilized nanoparticles or naked DNA, similar to that of Lipofectamine 2000. These results revealed that the bioadhesive PLGA nanoparticles formulated with Carbopol might be a very attractive candidate as a non-viral vector for lung cancer gene therapy and might alleviate the drawbacks of the conventional cationic vectors/DNA complexes for gene delivery in vivo.
authors.affiliation: School of Pharmaceutical Science, Shandong University, 44 Wenhua Xi Road, Ji'nan 250012, China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Zou
authors.forename: Chunxi
authors.initials: C
authors.lastname: Liu
authors.forename: Zhijin
authors.initials: Z
authors.lastname: Chen
authors.forename: Na
authors.initials: N
authors.lastname: Zhang
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D000268:Adhesiveness; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D004247:DNA / Q000008:administration & dosage / Q000737:chemistry / Q000378:metabolism; D004337:Drug Carriers; D018014:Gene Transfer Techniques; D006801:Humans; D019344:Lactic Acid / Q000737:chemistry*; D008055:Lipids / Q000737:chemistry; D008175:Lung Neoplasms / Q000378:metabolism / Q000473:pathology; D053758:Nanoparticles; D010316:Particle Size; D020442:Poloxamer / Q000737:chemistry; D011100:Polyglycolic Acid / Q000737:chemistry*; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D013499:Surface Properties; D014162:Transfection
chemical_list: D000180:Acrylic Resins; D004337:Drug Carriers; D008055:Lipids; C086724:Lipofectamine; D020442:Poloxamer; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; C006903:carbopol 940; D004247:DNA