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影响HBVDNA参考材料中的数字PCR定量精度的关键因素用于体外诊断.

Ning Ma1,2,3,4, Manyu Li1,2,3,4, Xiaotian Hao1,2,3,4

  • 1Division I of In Vitro Diagnostics for Infectious Diseases, Institute for In Vitro Diagnostics Control, National Institutes for Food and Drug Control, Beijing 100050, China.

Analytical chemistry
|October 9, 2025
PubMed
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数字PCR为参考材料提供精确的核酸量化. 核酸提取套件显著影响准确性,比其他数字PCR平台更高,突出了对标准化协议的需求.

科学领域:

  • 分子生物学分子生物学
  • 生物技术是生物技术.
  • 临床诊断 临床诊断 临床诊断

背景情况:

  • 数字PCR (dPCR) 对于绝对核酸量化至关重要.
  • 它在参考材料特性,包括体外诊断标准的应用是广泛的.
  • 缺乏对dPCR平台和提取套件对量化影响的系统评估.

研究的目的:

  • 建立针对乙型肝炎病毒 (HBV) 的特定dPCR测定方法.
  • 系统地评估dPCR平台,原料探针套件和提取套件对参考材料量化的影响.
  • 为在参考材料量化中标准化dPCR协议提供见解.

主要方法:

  • 开发一种高特异性和可重复的dPCR检测方法来检测HBV.
  • 对不同商业dPCR平台的量化结果进行比较分析.
  • 评估初级探头组和核酸提取套件的变化.
  • 计算跨平台和跨套件变化系数 (CV).

主要成果:

  • 在各种dPCR平台上观察到一致的定量测量 (平台间CV平均值:9.05%).
  • 核酸提取效率对量化准确性产生了最显著的影响 (套件中平均CV为76.66%).

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  • 初级探头的设计也大大增加了测量不确定性.

    • 结论:

    • 虽然dPCR平台显示一致性,但核酸提取套件在参考材料量化中引入了显著的变化.
    • 核酸提取协议的标准化对于基于dPCR的准确参考材料表征至关重要.
    • 这些发现对于提高dPCR测量的可靠性和可比性至关重要.