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The development of mechanically formed stable nanobubbles intended for sonoporation-mediated gene transfection

机译:用于机械形成的稳定纳米骨库的开发用于介导的介导的基因转染

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摘要

In this study, stable nano-sized bubbles (nanobubbles [NBs]) were produced using the mechanical agitation method in the presence of perfluorocarbon gases. NBs made with perfluoropropane had a smaller size (around 400 nm) compared to that of those made with perfluorobutane or nitrogen gas. The lipid concentration in NBs affected both their initial size and post-formulation stability. NBs formed with a final lipid concentration of 0.5 mg/ml tended to be more stable, having a uniform size distribution for 24 h at room temperature and 50 h at 4 °C. In vitro gene expression revealed that NBs/pDNA in combination with ultrasound (US) irradiation had significantly higher transfection efficacy in colon C26 cells. Moreover, for in vivo gene transfection in mice left limb muscles, there was notable local transfection activity by NBs/pDNA when combined with US irradiation. In addition, the aged NBs kept at room temperature or 4 °C were still functional at enhancing gene transfection in mice. We succeeded in preparing stable NBs for efficient in vivo gene transfection, using the mechanical agitation method.
机译:在该研究中,在全氟化物气体存在下,使用机械搅拌方法生产稳定的纳米尺寸气泡(纳米胶杆菌[NBS])。与用全氟丁烷或氮气制成的那些,用全氟丙烷制成的NB尺寸较小(约400nm)。 NB中的脂质浓度影响其初始尺寸和制剂后稳定性。用最终脂质浓度为0.5mg / ml的NBs倾向于更稳定,在室温下在室温下具有均匀的尺寸分布,在4℃下为50小时。体外基因表达显示,NBS / PDNA与超声(US)辐射的组合在结肠C26细胞中具有显着较高的转染效能。此外,对于小鼠的体内基因转染留下肢体肌肉,与美国辐射结合时,NBS / PDNA的局部转染活性显着。此外,在室温或4℃下保持的老年NBS在提高小鼠中的基因转染时仍然是功能性的。我们使用机械搅拌方法成功地制备稳定的NBS以获得高效的体内基因转染。

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