微针介导的siRNA通过基于脂质体的转移传递,用于内耳基因治疗
Sharon J Feng, François Voruz1, Stephen Leong
1Department of Otolaryngology-Head and Neck Surgery, Columbia University, New York, New York.
概括
微针注射成功将siRNA-Lipofectamine输送到尾,显示有效的传染而不导致听力损失. 这种方法为无创性耳性基因疗法提供了一个有前途的方法.
科学领域:
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
- 分子生物学分子生物学
- 生物医学工程 生物医学工程
背景情况:
- 通过微针进行内注射为内基因治疗提供了潜在的途径.
- 这项研究调查了使用空心微针来通过圆形窗口膜 (RWM) 输送小干扰RNA (siRNA) 和菌素的可行性.
研究的目的:
- 为了评估微针介导的siRNA-Lipofectamine的内输送的疗效和安全性.
- 评估RWM注射后的耳传染和潜在毒性.
主要方法:
- 用空洞的微针将光标记的siRNA和Lipofectamine注射到几内亚猪的RWM中.
- 在注射前和注射后使用听觉脑干响应 (ABR) 测试来评估听觉功能.
- 收获了尾细胞用于成像,以确认传染并评估分布.
主要成果:
- 在状的基底和中间转中观察到成功的转移,主要是在Corti器官,螺旋带和螺旋结中.
- 光表明传染物减少了注射后5天.
- 没有检测到ABR值的显著变化,这表明siRNA-Lipofectamine配方在测试剂量时的毒性较低.
结论:
- 通过微针传递小量的siRNA和Lipofectamine到耳结构是可行的.
- 这种技术有望为开发创伤性耳性基因治疗策略提供希望.
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