在常规诊断中开发一种全自动,高通量分子试验,用于检测老鼠肝炎E病毒
Jessica Panajotov1, Katja Giersch2, Lisa Sophie Pflüger2
1German Federal Institute for Risk Assessment (BfR), Berlin, Germany.
Journal of medical virology
|February 9, 2026
概括
一种新的实验室开发的测定方法现在可以在人类样本中检测大鼠肝炎E病毒 (ratHEV). 这种自动化鼠HEV RT-qPCR测定对于诊断至关重要,因为与人类HEV菌株的遗传差异.
科学领域:
- 病毒学 病毒学
- 分子诊断学 分子诊断
- 公共卫生 公共卫生
背景情况:
- 在全球范围内,老鼠肝炎E病毒 (ratHEV) 对人类的感染正在出现.
- 现有的人类HEV诊断试验无法检测由于显著的遗传差异而导致鼠HEV.
- 对于人类样本中老鼠HEV的特定诊断工具的需求至关重要.
研究的目的:
- 为人类血和便开发和验证实验室开发的老鼠HEV RT-qPCR测定方法.
- 在符合"体外诊断法规" (IVDR) 的全自动化,高吞吐量平台上实施测试.
- 评估试验的分析性能和用于检测老鼠HEV的包容性.
主要方法:
- 针对使用IVDR级试剂的cobas 5800/6800/8800系统,优化已发表的原料和探针.
- 使用细胞培养衍生病毒颗粒评估分析灵敏度,线性范围和精度.
- 使用各种老鼠HEV菌株进行包容性测试,并对相关病毒进行交叉反应性评估.
主要成果:
- 该试验显示出高分析灵敏度,检测极限为血中的98.9副本/毫升和便中的60.3副本/毫升.
- 在广泛的动态范围中观察到出色的线性 (r2 > 0.99) 和高精度 (<0.62 ct).
- 该试验在肝脏和血样本中成功检测出各种老鼠HEV亚基因型,在交叉反应性测试中没有显示错误阳性.
结论:
- 一个完全自动化的,符合IVDR的老鼠HEV RT-qPCR测定已成功建立用于常规人类诊断.
- 该测试可在人体血和便样本中可靠检测大鼠HEV RNA.
- 需要进行进一步的研究,以确定老鼠HEV感染在不同人群中的临床意义.
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