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评估PCR后净化方法,并随后优化MinElute® PCR净化套件,用于用PowerPlex® 21放大低输入DNA样本

Nicholas S Steele¹, Penny L Cooper¹, Marie S Rye¹

¹Forensic Biology Department, PathWest Laboratory Medicine, Perth, WA, Australia.

Forensic science international

|May 5, 2024

概括

后PCR净化增强了用于法医分析的低DNA输入样本. 基亚根MineElute®方法改进了PowerPlex® 21的DNA配置文件,使得从最小的DNA数量中检测出等位基因.

科学领域:

法医科学法医科学法医科学
分子生物学分子生物学
遗传学是一个遗传学.

背景情况:

在法医案例工作中,低DNA输入样本经常产生弱和部分DNA档案.
放大产品的PCR后净化提供了一种改善基检测的策略.

研究的目的:

评估四种商用PCR后净化方法,以增强低DNA输入的PowerPlex® 21配置文件.
优化选定的净化方法,以改善法医DNA分析.

主要方法:

对比了QIAGEN MinElute®,独立法医安普利康TM Rx,米利波微孔®和Thermo Fisher Scientific ExoSAP-ITTM. 这两种设备的使用情况.
评估DNA档案质量和过分析值的等位基因检测.
通过改变洗步骤和化量来优化MineElute®方法.

主要成果:

通过MinElute®,AmpliconTM Rx和Microcon®方法提高了等位基因的检测,从而从8 pg的DNA中恢复了样本.
对于≤16 pg DNA的样品,EXOSAP-ITTM净化没有成功.
优化的MinElute®方法通过减少化体积进一步增强了等位基因检测.

结论:

后PCR净化,特别是使用优化的MinElute®方法,显著增强了来自低输入样本的PowerPlex® 21 DNA档案.
这种方法提高了在具有挑战性的法医案例工作场景中恢复信息性的DNA配置文件.

关键词:

阿姆普利康TM Rxx 在线播放这就是ExoSap-ITTM.低模板DNA DNA 的低模板DNA.在Microcon®快速流量系统中,Microcon®快速流量矿Elute®®的使用方法进行PCR后净化.

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