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纳米孔第三代测序用于对血红蛋白病变体的全面分析

Weilun Huang¹, Shoufang Qu², Qiongzhen Qin¹

¹Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.

Clinical chemistry

|June 13, 2023

概括

本研究介绍了一种新的牛津纳米孔技术 (ONT) 第三代测序 (TGS) 方法用于诊断血红蛋白病变. 该方法有效地准备了长期阅读的TGS库,准确识别了血红蛋白基因中的复杂遗传变异.

科学领域:

基因组学就是基因组学.
分子诊断学分子诊断
生物信息学是一种生物信息学.

背景情况:

使用牛津纳米孔技术 (ONT) 的第三代测序 (TGS) 提供了多功能基因诊断.
为TGS准备长模板库,特别是在具有挑战性的基因组区域的复杂血红蛋白病变体,仍然很困难.
对于准确的变种检测,ONT测序需要强大的库准备方法.

研究的目的:

开发和验证一种新的长期阅读的TGS方法,用于对血红蛋白病的综合遗传分析.
为了克服在图书馆准备复杂的血红蛋白基因结构和序列变异的挑战.
建立一个高效和准确的血红蛋白病的诊断平台.

主要方法:

采用多重长期PCR策略,生成关键血红蛋白基因 (HBA2/1,HBG2/1,HBD,HBB) 的全基因和向的等位基因片.
图书馆建设使用这些长PCR产品,然后在牛津纳米孔MiniON仪器上进行测序.
用集成基因组学查看器 (IGV) 图表进行基因型识别.

主要成果:

开发的ONT TGS方法成功地使用整基因和等位基因读数识别了目标血红蛋白基因内的所有单核酸和结构变异.
该方法在158个分析的α-/β-thalassemia样本中显示出100%的一致性与先前确定的基因型.
特定的等位基读取允许准确检测目标删除和复杂的结构变异.

结论:

牛津纳米孔技术 (ONT) 第三代测序 (TGS) 方法为分子查和血红蛋白病的遗传诊断提供了高通量解决方案.
多重长期PCR方法是TGS试验中有效准备图书馆的有效策略.
这种方法为开发用于遗传疾病的TGS试验提供了实际参考.

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