工程精度人类疾病的斑马鱼等位基因
Holly R Thomas1, Bradley K Yoder1, Matthew S Alexander2
1Department of Cell, Developmental and Integrative Biology, Heersink School of Medicine, University of Alabama at Birmingham, AL, USA.
bioRxiv : the preprint server for biology
|June 6, 2025
概括
对人类疾病产生精确的动物模型至关重要. 这项研究优化了使用CRISPR/Cas9的斑马鱼基因编辑,确定了创建患者变异的最佳方法,并确认了治疗研究的生殖系传播.
科学领域:
- 遗传学和基因组学 遗传学和基因组学
- 发展生物学 发展生物学
- 生物技术是生物技术.
背景情况:
- 动物模型对于理解人类疾病的发病因子和评估疗法至关重要.
- 人类患者基因组测序揭示了导致不同疾病表型的独特变异.
- 该UAB精密动物建模中心 (CPAM) 专注于通过动物模型分析患者变异的致病性和疾病机制.
研究的目的:
- 优化斑马鱼基因编辑平台,用于生成人类患者变异的动物模型.
- 评估不同CRISPR/Cas9和单链寡度氧核酸 (ssODN) 参数在同质导向修复 (HDR) 的效率.
- 建立可靠的方法来识别生殖线传播的创始人和F1动物的基因定型.
主要方法:
- 在斑马鱼中利用CRISPR/Cas9基因编辑与ssODN修复模板生成11个患者变异和1个研究等位基因.
- 评估了多个橄球方向和大小,并使用PCR片下一代测序 (NGS) 进行F0胚胎HDR效率评估.
- 在F0后代DNA上使用NGS来识别生殖系传播的创始人,以及用于F1基因型定型的高分辨率化曲线分析 (HRMA).
主要成果:
- 在斑马鱼中成功生成了11个患者变异和1个研究等位基因.
- 确定指导和Oligo组合的经验评估对于最佳的HDR速率是必要的,NGS在频率确定方面优于ICE.
- 观察到大多数创始人的生殖系传播中的"大奖"效应,并证实HRMA在区分F1动物与患者变异中的实用性,同时注意到其他基因型定型方法的潜在错误阳性.
结论:
- 优化的斑马鱼基因编辑平台有效地为人类患者变体生成动物模型.
- NGS是一种可靠的方法来评估HDR效率和识别生殖线传输创始人.
- HRMA为携带患者变异的F1动物提供了强大的基因定型方法.
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