职业与健康 ›› 2025, Vol. 41 ›› Issue (23): 3200-3208.

• 论著 • 上一篇    下一篇

基于扩增子测序技术建立临床样本中人冠状病毒OC43全基因组测序方法

周雨晴, 霍雨佳, 张露, 张雪纯, 王筱, 赵冰()   

  1. 上海市浦东新区疾病预防控制中心(上海市浦东新区卫生健康监督所),上海 200136
  • 收稿日期:2025-03-06 修回日期:2025-03-20 出版日期:2025-12-01 发布日期:2025-12-10
  • 通讯作者: 赵冰
  • 作者简介:周雨晴,女,技师,在读硕士研究生,主要从事病毒病原研究工作。
  • 基金资助:
    上海市加强公共卫生体系建设三年行动计划(2023—2025年)重点学科项目(GWVI-11.1-02-传染病学);上海市浦东新区疾病预防控制中心科研项目与人才孵化-中心级科技项目(PDCDC-2023-05)

Development of a whole-genome sequencing method of human coronavirus OC43 in clinical samples based on amplicon sequencing technology

Yuqing ZHOU, Yujia HUO, Lu ZHANG, Xuechun ZHANG, Xiao WANG, Bing ZHAO()   

  1. Shanghai Pudong New Area Center for Disease Control and Prevention(Shanghai Pudong New Area Health Supervision Institute),Shanghai 200136,China
  • Received:2025-03-06 Revised:2025-03-20 Online:2025-12-01 Published:2025-12-10
  • Contact: Bing ZHAO
  • About author:ZHAO Bing,Deputy chief technician,E⁃mail:zerg8424@hotmail.com

摘要:

目的 建立一种可直接从临床样本中获取人冠状病毒OC43(human coronavirus OC43,HCoV-OC43)全基因组序列的测序方法,为HCoV-OC43的基因组序列获取和系统进化分析等应用提供重要技术手段。方法 基于扩增子测序技术针对HCoV-OC43不同亚型设计扩增引物并根据缺失片段进行优化设计补丁引物,通过扩增两段交叉重叠的基因序列来获取基因组序列并分别对引物及测序数据进行质量控制,比较不同扩增反应体系、病毒载量对扩增效率以及测序所获序列质量的影响。结果 所建立的方法可高效获取HCoV-OC43的全基因组序列,能够实现覆盖率≥98%,平均深度≥1 500×的病毒基因序列获取,具有良好的特异性和敏感性。在41件HCoV-OC43核酸阳性样本中成功获得31条基因序列,其中包括22个全基因组序列,8条N基因序列,1条S基因序列。基于不同序列片段的分型结果存在差异。结论 所建立的测序方法适用于从Ct值<32的HCoV-OC43临床样本中获取全基因组序列,为呼吸道病毒的分子监测及防控提供技术支持与数据。

关键词: 人冠状病毒OC43, 全基因组测序, 基因型

Abstract:

Objective To develop an efficient sequencing method for directly obtaining the whole-genome sequence of human coronavirus OC43(HCoV-OC43) from clinical samples,providing a critical technical means for genome sequencing and phylogenetic analysis of HCoV-OC43. Methods Specific primers were designed for different subtypes of HCoV-OC43 by using amplicon-based sequencing technology,patch primers were further optimized to compensate for missing regions,enabling the amplification of two overlapping segments to reconstruct the full genome sequence,and quality control was performed on both primers and sequencing data. Additionally,the effects of different amplification reaction systems and viral loads on amplification efficiency and sequencing quality were compared. Results The established method efficiently retrieved whole-genome sequences of HCoV-OC43,achieving genome coverage ≥98% and an average sequencing depth of ≥1 500×,with high specificity and sensitivity. Among 41 HCoV-OC43-positive clinical samples,31 genome sequences were successfully obtained,including 22 whole-genome sequences,8 N gene sequences,and 1 S gene sequence. Phylogenetic analysis revealed discrepancies between classifications based on different sequence fragments. Conclusion The proposed sequencing method is suitable for obtaining whole-genome sequences from HCoV-OC43-positive clinical samples with Ct values <32,which provides technical support and scientific data for molecular surveillance and the prevention and control of respiratory viruses.

Key words: Human coronavirus OC43, Whole-genome sequencing, Genotype

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