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使用Demixtify进行混合检测

August E Woerner¹, Benjamin Crysup¹, Jonathan L King²

¹Center for Human Identification, University of North Texas Health Science Center, Fort Worth, TX, USA; Department of Microbiology, Immunology and Genetics, University of North Texas Health Science, Center, Fort Worth, TX, USA.

Forensic science international. Genetics

|November 28, 2023

概括

Demixtify是一个新的程序,用于检测使用单核酸多态 (SNP) 的DNA混合物. 它可以识别高度不平衡或低覆盖的混合物,增强法医遗传谱系.

科学领域:

法医科学法医科学法医科学
遗传学遗传学是一个
生物信息学是一种生物信息学.

背景情况:

短串联重复 (STRs) 是标准的法医遗传标记,具有用于混合分析的既定工具.
法医学遗传谱系越来越多地使用单核酸多态 (SNP),但SNP混合评估的分析工具有限.

研究的目的:

介绍Demixtify,这是一个新的计算工具,用于使用双联SNP检测DNA混合物.
解决法医SNP混合物分析专用工具的缺乏问题.

主要方法:

开发了Demixtify,这是一个旨在分析双联SNP以检测DNA混合物的程序.
纳入了特定于测试标记的序列错误的经验估计器.
开发了直角技术,以表征体外混合物和单一来源样本进行验证.

主要成果:

Demixtify成功地检测到高度不平衡的混合物 (低至1:99) 覆盖范围广.
该程序可以识别低覆盖 (∼1×) 样本中的混合物,特别是在平衡时.
直角方法验证了Demixtify混合物检测能力的有效性.

结论:

Demixtify提供了一种强大的解决方案,用于在法医应用中使用SNP检测DNA混合物.
该工具通过解决SNP混合分析挑战来增强法医学遗传谱系的能力.
包括一个特定标记器的错误估计器增加了其相关性和可靠性为法医案例工作.

关键词:

活动级别活动级别混合的DNA混合的DNA混合物遗传家谱遗传家谱遗传家谱混合物检测检测器混合物检测器单个核酸的多态性.整个基因组的测序.

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