Cellular Injury of Cardiomyocytes during Hepatocyte Growth Factor Gene Transfection with Ultrasound-Triggered Bubble Liposome Destruction

Author:

Komamura Kazuo1,Tatsumi Rie1,Tsujita-Kuroda Yuko1,Onoe Takatoshi2,Matsumoto Kunio3,Nakamura Toshikazu3,Miyazaki Jun-ichi4,Horio Takeshi5,Sugimachi Masaru1

Affiliation:

1. Department of Cardiovascular Dynamics, Research Institute, National Cerebral and Cardiovascular Center, 5-7-1 Fujishiro-dai,Suita, Osaka 565-8565, Japan

2. Department of Nursing Science, Taisei Gakuin University, Sakai 587-8555, Japan

3. Division of Molecular Regenerative Medicine, Department of Biochemistry and Molecular Biology, Osaka University Graduate School of Medicine, Suita 565-0871, Japan

4. Division of Stem Cell Regulation Research, G6, Osaka University School of Medicine, Suita 565-0871, Japan

5. Division of Hypertension, National Cerebral and Cardiovascular Center, Suita 565-8565, Japan

Abstract

We transfected naked HGF plasmid DNA into cultured cardiomyocytes using a sonoporation method consisting of ultrasound-triggered bubble liposome destruction. We examined the effects on transfection efficiency of three concentrations of bubble liposome (1×106, 1×107, 1×108/mL), three concentrations of HGF DNA (60, 120, 180 μg/mL), two insonification times (30, 60 sec), and three incubation times (15, 60, 120 min). We found that low concentrations of bubble liposome and low concentrations of DNA provided the largest amount of the HGF protein expression by the sonoporated cardiomyocytes. Variation of insonification and incubation times did not affect the amount of product. Following insonification, cardiomyocytes showed cellular injury, as determined by a dye exclusion test. The extent of injury was most severe with the highest concentration of bubble liposome. In conclusion, there are some trade-offs between gene transfection efficiency and cellular injury using ultrasound-triggered bubble liposome destruction as a method for gene transfection.

Funder

Ministry of Education, Culture, Sports, Science and Technology

Publisher

Hindawi Limited

Subject

Automotive Engineering

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