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在视网膜基因疗法中克服尺寸障碍,通过通过脂质纳米粒子介导的全长eys DNA的输送

Sarah Goddaer¹, Emma De Coster¹, Elise Callens²

¹Lab of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium.

Drug delivery and translational research

|January 28, 2026

概括

非病毒性脂质纳米颗粒有效地为遗传性视网膜疾病基因治疗提供大型EYS等离子体DNA. 这一突破克服了病毒载体大小的限制,为治疗视网膜炎等疾病提供了新的希望.

科学领域:

眼科医生眼科眼科
基因治疗基因治疗
纳米技术纳米技术

背景情况:

遗传性视网膜疾病 (IRD) 由于病毒载体大小限制,对基因增强构成挑战.
像EYS这样的大型基因很难使用传统的基因疗法方法传递.

研究的目的:

开发和评估一种非病毒性脂质纳米粒子 (LNP) 策略,以提供全长的EYS等离子体DNA.
为了克服IRD基因疗法的病毒载体的包装容量限制.

主要方法:

在ARPE-19细胞中使用eGFP记者构造优化了LNP配方.
将封装的全长EYS等离子体DNA (11.6kb) 转化为优化的LNP.
在视网膜色素上皮细胞 (RPE) 细胞培养和ex vivo牛视网膜扩展物中经过验证的输送和转录.

主要成果:

通过优化的LNP配方实现了高封装效率和强大的转基因表达.
在人类玻璃体中证明了EYS等离子体DNA的结构稳定性和单拷贝加载.
在外生子内注射后通过RT-qPCR在视网膜组织中确认功能传递和EYSmRNA表达.

结论:

脂质纳米颗粒能够有效地进行细胞内传递和转录大型IRD基因.
这种基于LNP的方法显示出克服IRDs当前基因疗法的尺寸限制的巨大潜力.
代表了第一个成功的体外/体外LNP介导的大型 (>10 kbp) 全长IRD基因的成功输送.

关键词:

眼睛眼睛眼睛基因输送基因输送基因输送脂质纳米颗粒的使用方法塑体DNA DNA 的意思.视网膜炎的颜色素

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