相关实验视频

Updated: Jul 25, 2026

Surgical Method for Virally Mediated Gene Delivery to the Mouse Inner Ear through the Round Window Membrane

Surgical Method for Virally Mediated Gene Delivery to the Mouse Inner Ear through the Round Window Membrane

Published on: March 16, 2015

在单边耳输入后,不同AAV载体的分布比较

Shuang Han^1,2,3,4, Zhijiao Xu^2,3,4, Shengyi Wang^2,3,4

¹Department of Otolaryngology Head and Neck Surgery, Second Hospital of Jilin University, Changchun, 130000, PR China.

|December 14, 2023

概括

这项研究比较了基因相关病毒 (AAV) 基因治疗载体用于小鼠耳聋治疗. 某些AAV血清型显示出更好的内耳准和表达,为未来的基因疗法开发提供了信息.

科学领域:

耳鼻喉科耳鼻喉科耳鼻喉科
基因治疗基因治疗
分子生物学分子生物学

背景情况:

基因相关病毒 (AAV) 基因疗法对治疗聋发有前途.
目前的AAV载体缺乏细胞类型的特异性,导致非耳部器官的非目标转导.
优化AAV向量向内耳传递对于有效的基因疗法至关重要.

研究的目的:

为了在新生小鼠中比较圆窗膜 (RWM) 注射后六种不同的AAV血清型的转基因表达和生物分布.
评估AAV载体在转导内毛细胞 (IHC) 和外毛细胞 (OHC) 的效率.
识别从尾管传播到包括大脑在内的其他器官的潜在载体传播途径.

主要方法:

新生小鼠接受了AAV1,AAV2,Anc80L65,AAV9,AAV-PHP.B或携带增强绿色光蛋白 (eGFP) 的AAV-PHP.eB的RWM注射.
分析了转基因表达和生物分布在耳,逆侧内耳,大脑,心脏和肝脏.
染料追踪测试被用来调查向量传播到大脑的潜在途径.

主要成果:

在所有AAV亚型中,在注射的耳中始终发现病毒度最高.
AAV2,Anc80L65,AAV9,AAV-PHP.B和AAV-PHP.eB有效地转导了IHC和OHC; AAV1显示高IHC但低OHC转导.
在所有AAV亚型中观察到对侧内耳,大脑,心脏和肝脏的最小但可检测的转导,与其他类型相比,AAV1和AAV2在大脑中的eGFP表达较低.

结论:

耳水道可以作为快速向量传播到大脑的途径.
结果提供了关于AAV载体在内耳分娩后的生物分布的有价值数据.
这项研究为选择最佳的AAV血清型提供了一个参考,用于开发用于听力损失的基因疗法.

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