@article{oai:nagasaki-u.repo.nii.ac.jp:00002507,
 author = {Nishimura, Koyo and Fumoto, Shintaro and Fuchigami, Yuki and Hagimori, Masayori and Maruyama, Kazuo and Kawakami, Shigeru},
 issue = {1},
 journal = {Drug Delivery},
 month = {Apr},
 note = {In this study, we demonstrate the low toxicity and highly efficient and spatially improved
transfection of plasmid DNA (pDNA) with liposomal nanobubbles (bubble liposomes [BLs])
using ultrasound (US) irradiation in mice. Naked pDNA with BLs was intraperitoneally injected, followed by US irradiation. The injection volume, the duration of US irradiation, and the dose of BLs were optimized. Both BLs and US irradiation were essential to achieve high transgene
expression from naked pDNA. We observed transgene expression in the entire peritoneal
tissues, including the peritoneal wall, liver, spleen, stomach and small and large intestines. The area of transfection could be controlled with focused US irradiation. There were few changes in the morphology of the peritoneum, the peritoneal function or serum alanine aminotransferase levels, suggesting the safety of BLs with US irradiation. Using a tissue-clearing method, the spatial distribution of transgene expression was evaluated. BLs with US irradiation delivered pDNA to the submesothelial layer in the peritoneal wall, whereas transgene expression was restricted to the surface layer in the liver and stomach. Therefore, BLs with US
irradiation could be an effective and safe method of gene transfection to the peritoneum., Drug Delivery, 24(1), pp.737-744; 2017},
 pages = {737--744},
 title = {Effective intraperitoneal gene transfection system using nanobubbles and ultrasound irradiation},
 volume = {24},
 year = {2017}
}