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用CRISPR/Cas9基因组编辑技术为ADGRV1-关联视网膜功能障碍生成和表征斑马鱼模型

Merel Stemerdink^1,2, Sanne Broekman^1,2, Theo Peters^1,2

¹Department of Otorhinolaryngology, Hearing & Genes, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands.

|June 28, 2023

概括

研究人员创建了第一个斑马鱼模型,用于与ADGRV1基因相关的视网膜色素炎 (RP). 这种新模型显示了早期的视网膜功能障碍,并将有助于开发治疗这种视力丧失疾病的方法.

科学领域:

遗传学和分子生物学
眼科医生眼科眼科
神经科学是一个神经科学.

背景情况:

皮质视网膜炎 (RP) 影响全球4万人由于ADGRV1基因的致病变体,目前没有治疗方法.
开发一个模型生物对于理解ADGRV1相关的RP病理生理学和测试疗法至关重要.
克里斯普尔/Cas9技术能够有效地生成突变模型,斑马鱼适合研究视网膜功能障碍.

研究的目的:

为了生成和描述ADGRV1-相关视网膜炎的第一个斑马鱼模型.
研究ADGRV1在斑马鱼光受体功能和USH2复合体成员局部化中的作用.
为评估未来的治疗策略建立可量化的结果指标.

主要方法:

利用CRISPR/Cas9基因组编辑,在斑马鱼的adgrv1基因第9个外形中引入4bp删除.
进行了免疫组织化学分析,以评估Adgrv1蛋白位址和USH2复合物成员水平.
进行了电网红图 (ERG) 记录,以评估adgrv1突变斑马鱼的视网膜功能.

主要成果:

在adgrv1斑马鱼视网膜中,连接膜的光受体中缺少Adgrv1蛋白.
缺少Adgrv1导致usherin和Whrnb的水平降低,这表明USH2复合体内的相互作用.
异常罗多素局部化的增加和ERG B波幅的降低表明视网膜功能受损.

结论:

adgrv1斑马鱼代表了第一个ADGRV1突变模型,表现出早期视网膜功能障碍.
这个模型证明了Adgrv1在维持光受体结构和功能方面的作用,可能是通过与USH2复合体的相互作用.
观察到的表型变化为评估ADGRV1相关RP的新疗法提供了可量化的措施.

关键词:

在ADGRV1中使用.这就是CRISPR/Cas9的作用.阿舍尔综合征是什么意思阿舍尔综合征是什么意思视网膜功能障碍视网膜功能障碍视网膜炎的颜色化斑马鱼是一种斑马鱼.

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