一种基于全基因组测序的快速,低成本和高度敏感的SARS-CoV-2诊断
Per A Adastra1,2,3, Neva C Durand1,2,3,4, Namita Mitra1,2,3
1The Center for Genome Architecture, Baylor College of Medicine, Houston, Texas, United States of America.
PloS one
|November 30, 2023
概括
一种名为"病原体导向低成本组装和重新测序" (POLAR) 的新低成本,高通量方法,通过放大整个病毒基因组,可以早期检测SARS-CoV-2感染. 这种方法提供了准确的诊断和详细的遗传数据,用于跟踪疾病传播和确定治疗点.
科学领域:
- 病毒学 病毒学
- 基因组学就是基因组学.
- 传染病诊断 传染病诊断 传染病诊断
背景情况:
- 早期检测SARS-CoV-2对于流行病管理至关重要,因为在症状发作时具有很高的传染性.
- 目前的诊断方法,如RT-PCR放大了有限的病毒遗传位点.
- 需要敏感,高吞吐量和成本效益的诊断工具.
研究的目的:
- 引入以病原体为导向的低成本组装和重新测序 (POLAR),这是一种用于SARS-CoV-2诊断和研究的新方法.
- 为了证明POLAR能够放大整个SARS-CoV-2基因组进行全面分析.
- 将POLAR的性能与现有的诊断标准进行比较.
主要方法:
- 极地将SARS-CoV-2丰富 (ARTIC网络) 与短读DNA测序和新基因组组合相结合.
- 该方法放大了完整的SARS-CoV-2基因组,与向RT-PCR方法不同.
- 用临床鼻腔中轮片样本来验证POLAR的诊断准确性.
主要成果:
- 极地可靠地检测SARS-CoV-2在84基因组等价物/毫升的精度>95%,超过了许多FDA授权的测试在灵敏度.
- 该方法可从样本中实现可靠,经常无间隙和准确的SARS-CoV-2基因组组装.
- 在临床样本中,POLAR诊断显示与CDC的2019年新型冠状病毒诊断测试100%一致.
结论:
- 波拉提供了一种灵敏,准确和具有成本效益的SARS-CoV-2检测和基因组分析方法.
- 来自POLAR的基因型数据有助于加强对病毒传播的跟踪,并识别潜在的疫苗/药物标.
- 这种高通量方法使得大量样品的快速处理 (24小时的周转时间) 以每名患者的低成本实现.
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