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在重复扩张障碍中对CRISPR/Cas9向纳米孔测序方法的比较分析

Louise Benarroch¹, Pierre-Yves Boëlle², Hélène Madry³

¹Sorbonne Université, Inserm, Institut de Myologie, Centre de Recherche en myologie, Paris 75013, France.

Genomics, proteomics & bioinformatics

|October 24, 2025

概括

这项研究引入了CRISPR/Cas9向的长读序列,用于表征重复扩张性疾病,如1型肌性发育不良症 (DM1) 和眼节骨髓损伤 (OPDM). 该方法揭示了体质马赛克和甲基化变化,提供了一种新的诊断方法.

科学领域:

遗传学是一个遗传学.
分子生物学分子生物学
神经学神经学

背景情况:

已知有50多种重复扩张障碍,影响遗传诊断.
由于动图的复杂性,高GC含量和可变长度,很难描述短串联重复 (STR).
长读序列测定已经推进了诊断,但全面的STR表征仍然是一个挑战.

研究的目的:

描述1型肌性发育不良症 (DM1) 和眼性发育不良症 (OPDM) 的重复扩张.
评估CRISPR/Cas9向的长读序列 (ONT) 用于分析重复大小,分布,结构和DNA甲基化.
为CRISPR/Cas9针对性的长读序列和生物信息分析提出指导方针.

主要方法:

在牛津纳米孔技术 (ONT) 平台上针对CRISPR/Cas9的长读测序.
分析DM1和OPDM位点,包括重复大小,长度分布,扩张结构和DNA甲基化.
三种基础调用策略 (MinKnow,Dorado,Bonito) 的比较,用于重复扩张的表征.

主要成果:

证明了基调策略对重复扩张特征的关键影响.
提供了针对CRISPR/Cas9的长读测序库准备和生物信息学的指导方针.
在OPDM患者中首次发现了体质马赛克和LRP12位点高甲基化.
在OPDM患者中观察到重复管道结构的变化.

结论:

克里斯普尔/卡斯9丰富长读序列是重复扩张疾病的强大策略.
这种方法适用于研究和临床诊断环境.
该研究强调了基调策略的重要性,并为未来的研究提供了框架.

关键词:

基础调用器 (Basecallers) 是一个调用器.长读序列的测序方式肌性缩症 1 型 1 型眼鼻远端肌肉病变 (Oculopharyngodistal myopathy) 是一种眼睛喉远端肌肉病变的疾病.重复扩张的扩张.

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