title: Enhancement of gene transduction efficiency in cancer cells using cationic liposome with hyperthermia.
abstract: We evaluated the effects of hyperthermia on the efficiency of gene transduction by using a cationic liposome to develop an efficient method for lipofection. We used Lewis lung carcinoma (LLC), NIH3T3, and A549 cell lines, with Lipofectamine reagent as the cationic liposome and the LacZ gene as the reporter gene. In LLC, co-incubation of the cationic liposome and plasmid DNA complex (lipoplex) with the cells for 2 h at 41 degrees C enhanced the efficiency of gene transduction approximately 1.4-fold compared to incubation for 2 h at 37 degrees C, as measured by X-gal staining and beta-galactosidase activity. In cell lines NIH3T3 and A549, the efficiency of gene transduction showed a tendency toward enhancement after 2 h co-incubation with lipoplex at 41 degrees C compared to that at 37 degrees C, as measured by X-gal staining. This is the first study to demonstrate the enhancement of gene transduction efficiency achieved by using a cationic liposome under conditions of hyperthermia. This method should prove useful for lipofection in other cancer cells.
authors.affiliation: Department of Surgery II, Okayama University Medical School, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Mushiake
authors.forename: Motoi
authors.initials: M
authors.lastname: Aoe
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Washio
authors.forename: Akio
authors.initials: A
authors.lastname: Andou
authors.forename: Nobuyoshi
authors.initials: N
authors.lastname: Shimizu
mesh_terms: D016475:3T3 Cells / Q000166:cytology; D000818:Animals; D018827:Carcinoma, Lewis Lung; D002412:Cations; D002455:Cell Division; D005697:Galactosides; D006358:Hot Temperature; D006801:Humans; D006979:Hyperthermia, Induced; D007211:Indoles; D008081:Liposomes / Q000378:metabolism*; D051379:Mice; D014161:Transduction, Genetic / Q000379:methods*; D014407:Tumor Cells, Cultured / Q000166:cytology; D001616:beta-Galactosidase / Q000235:genetics
chemical_list: D002412:Cations; D005697:Galactosides; D007211:Indoles; D008081:Liposomes; D001616:beta-Galactosidase; C044888:5-bromo-4-chloro-3-indolyl beta-galactoside