title: Effective in vitro and in vivo gene delivery by the combination of liposomal bubbles (bubble liposomes) and ultrasound exposure.
abstract: Gene delivery with a physical mechanism using ultrasound (US) and nano/microbubbles is expected as an ideal system in terms of delivering plasmid DNA noninvasively into a specific target site. We developed novel liposomal bubbles (Bubble liposomes (BLs)) containing the lipid nanobubbles of perfluoropropane which were utilized for contrast enhancement in ultrasonography. BLs were smaller in diameter than conventional microbubbles and induced cavitation upon exposure ultrasound. In addition, when coupled with US exposure, BLs could deliver plasmid DNA into various types of cells in vitro and in vivo. The transfection efficiency with BLs and US was higher than that with conventional lipofection method. Therefore, the combination of BLs and US might be an efficient and novel nonviral gene delivery system.
authors.affiliation: Department of Biopharmaceutics, School of Pharmaceutical Sciences, Teikyo University, Kanagawa, Japan.
authors.forename: Ryo
authors.initials: R
authors.lastname: Suzuki
authors.forename: Kazuo
authors.initials: K
authors.lastname: Maruyama
mesh_terms: D000818:Animals; D001201:Ascites / Q000628:therapy; D019556:COS Cells; D002522:Chlorocebus aethiops; D006224:Cricetinae; D004247:DNA / Q000008:administration & dosage*; D005466:Fluorocarbons / Q000737:chemistry; D017930:Genes, Reporter; D015316:Genetic Therapy / Q000379:methods*; D006801:Humans; D007269:Injections, Intra-Arterial; D008081:Liposomes / Q000737:chemistry*; D008297:Male; D051379:Mice; D045423:Microbubbles; D010957:Plasmids / Q000008:administration & dosage; D012510:Sarcoma 180 / Q000235:genetics / Q000628:therapy; D014162:Transfection / Q000379:methods*; D014465:Ultrasonics
chemical_list: D005466:Fluorocarbons; D008081:Liposomes; D004247:DNA; C042852:perflutren