在法医DNA检验中，能否提取到足够浓度与纯度的DNA模板，是决定DNA检验成败的关键之一。本研究分别采用Chelex-100法与QIAamp DNA Investiga-tor试剂盒结合QIAcube核酸自动化提取仪（QIAcube纯化法）提取实际检案中的 DNA ，同等条件下...在法医DNA检验中，能否提取到足够浓度与纯度的DNA模板，是决定DNA检验成败的关键之一。本研究分别采用Chelex-100法与QIAamp DNA Investiga-tor试剂盒结合QIAcube核酸自动化提取仪（QIAcube纯化法）提取实际检案中的 DNA ，同等条件下进行PCR扩增与电泳，比较分析二者的图谱，报道如下。展开更多
Sexual assault evidence often contains sperm cells,which are typically separated from nonsperm cells using manual differential lysis procedures.The goal of this study was to evaluate the automated QIAGEN QIAcube for t...Sexual assault evidence often contains sperm cells,which are typically separated from nonsperm cells using manual differential lysis procedures.The goal of this study was to evaluate the automated QIAGEN QIAcube for this purpose and to compare it to manual QIAGEN and manual organic differential methods using DNA yields and STR profile data for assessment.DNA yields were determined by qPCR,followed by multiplex STR amplification,CE analysis,and mixture interpretation.The automated method was capable of effective cell separation,producing DNA yields sufficient for STR amplification.Further,sperm fraction human:male DNA ratios from the QIAcube samples were consistently closer to the desired 1:1 and STR profiles were less likely to result in mixtures,with 6–8fewer female alleles detected(median 1.5 alleles).Ultimately,using the QIAcube for automated differential processing of semen-containing mixtures reduces the need for downstream mixture interpretation and improves STR profile quality with substantially less hands-on time.展开更多
文摘在法医DNA检验中，能否提取到足够浓度与纯度的DNA模板，是决定DNA检验成败的关键之一。本研究分别采用Chelex-100法与QIAamp DNA Investiga-tor试剂盒结合QIAcube核酸自动化提取仪（QIAcube纯化法）提取实际检案中的 DNA ，同等条件下进行PCR扩增与电泳，比较分析二者的图谱，报道如下。
文摘Sexual assault evidence often contains sperm cells,which are typically separated from nonsperm cells using manual differential lysis procedures.The goal of this study was to evaluate the automated QIAGEN QIAcube for this purpose and to compare it to manual QIAGEN and manual organic differential methods using DNA yields and STR profile data for assessment.DNA yields were determined by qPCR,followed by multiplex STR amplification,CE analysis,and mixture interpretation.The automated method was capable of effective cell separation,producing DNA yields sufficient for STR amplification.Further,sperm fraction human:male DNA ratios from the QIAcube samples were consistently closer to the desired 1:1 and STR profiles were less likely to result in mixtures,with 6–8fewer female alleles detected(median 1.5 alleles).Ultimately,using the QIAcube for automated differential processing of semen-containing mixtures reduces the need for downstream mixture interpretation and improves STR profile quality with substantially less hands-on time.
