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氨基基基编辑器纠正与患者iPSC和视网膜器官的遗传视网膜变相关的致病变异

Amy Leung¹, Pedro R L Perdigão^1,2,3,4, Almudena Sacristan-Reviriego^1,5

¹University College London Institute of Ophthalmology, University College London, London EC1V 9EL, UK.

Molecular therapy. Nucleic acids

|December 17, 2025

概括

腺基编辑 (ABE) 在治疗遗传性视网膜发育不良 (IRD) 方面表现有前途. 这项研究成功地纠正了患者衍生的视网膜器官中引起疾病的突变,恢复了与视力相关的蛋白质.

科学领域:

遗传学遗传学是一个
眼科医生眼科眼科
分子生物学分子生物学

背景情况:

遗传性视网膜发育不良 (IRDs) 是一种不可治愈的遗传疾病,导致逐渐的视力丧失.
基因组编辑通过纠正致病突变提供了单剂量治疗的潜力.
腺基编辑 (ABE) 是一种具有治疗潜力的精确基因编辑工具.

研究的目的:

通过使用患者衍生细胞,研究ABE在纠正IRD引起突变方面的疗效.
建立和利用视网膜有机体 (ROs) 作为测试基因疗法的模型.
评估ABE在特定的IRD模型中恢复视觉相关蛋白质功能的能力.

主要方法:

产生患者衍生诱导多能干细胞 (iPSCs),并将其分化为视网膜器官 (ROs).
通过 lipofection (RNA) 或双 AAV 转导 (分裂整体) 将腺基编辑器组件传递给 ROs.
分析了AIPL1基因校正和光受体细胞下游视觉蛋白质的恢复.

主要成果:

在iPSC和RO中实现了致病性AIPL1突变 (c.665G>A) 的有效纠正.
这两种输送方法都成功地挽救了光受体细胞中的AIPL1表达.
在经过治疗的棒光受体中,观察到循环诺辛单酸化酶6蛋白的恢复.

结论:

腺基编辑显示出作为IRD治疗策略的潜力.
视网膜有机体是评估基因编辑疗法的宝贵平台.
成功的AIPL1救援为治疗Leber4型先天性黄斑症提供了概念证明.

关键词:

克里斯普尔是什么意思?克里斯普尔是什么意思?这就是Cas9的情况.利伯的先天性黄斑症 (Leber congenital amaurosis) 是一种先天性黄斑症.MT: 编辑RNA/DNA的方法.基础编辑基础编辑诱导的多能干细胞干细胞.遗传性视网膜损伤症遗传性视网膜损伤症视网膜的有机体

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