法医学杂志 ›› 2021, Vol. 37 ›› Issue (6): 817-824.DOI: 10.12116/j.issn.1004-5619.2021.510404

• 论著 • 上一篇    下一篇

ForenSeqTM DNA Signature Prep试剂盒在浙江畲族人群中的法医学应用

屈轶龄1(), 林源2(), 杨子豪2,3, 陶瑞旸2, 夏若成2, 曹正军4, 高瑞祥4, 于欢1,2, 王紫薇1,2, 杨琪1,2, 张晓春1,2, 张素华2(), 李成涛1,2()   

  1. 1.苏州大学基础医学与生物科学学院,江苏 苏州 215123
    2.司法鉴定科学研究院 上海市法医学重点实验室 司法部司法鉴定重点实验室 上海市司法鉴定专业技术服务平台,上海 200063
    3.华东政法大学,上海 200042
    4.盐城市公安局刑警支队,江苏 盐城 224000
  • 收稿日期:2021-04-27 发布日期:2021-12-25 出版日期:2021-12-28
  • 通讯作者: 张素华,李成涛
  • 作者简介:李成涛,男,研究员,博士研究生导师,主要从事法医遗传学研究;E-mail:lichengtaohla@163.com
    张素华,女,副研究员,主要从事法医遗传学研究;E-mail:zhangsh@ssfjd.cn
    屈轶龄(1996—),女,硕士研究生,主要从事法医遗传学研究;E-mail:moeqyl77@163.com
    林源(1967—),男,主任法医师,主要从事法医物证学研究;E-mail:liny@ssfjd.cn第一联系人:屈轶龄和林源为共同第一作者
  • 基金资助:
    万人计划青年拔尖人才项目(WRQB2019);中青年科技创新领军人才项目(2018RA2102);司法部司法鉴定重点实验室资助项目;上海市法医学重点实验室资助项目(21DZ2270800);上海市司法鉴定专业技术服务平台资助项目(19DZ2292700)

Forensic Application of ForenSeqTM DNA Signature Prep Kit in Zhengjiang She Ethnic Group

Yi-ling QU1(), Yuan LIN2(), Zi-hao YANG2,3, Rui-yang TAO2, Ruo-cheng XIA2, Zheng-jun CAO4, Rui-xiang GAO4, Huan YU1,2, Zi-wei WANG1,2, Qi YANG1,2, Xiao-chun ZHANG1,2, Su-hua ZHANG2(), Cheng-tao LI1,2()   

  1. 1.School of Biology and Basic Medical Sciences, Soochow University, Suzhou 215123, Jiangsu Province, China
    2.Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
    3.East China University of Political Science and Law, Shanghai 200042, China
    4.Criminal Police Detachment of Yancheng Public Security Bureau, Yancheng 224000, Jiangsu Province, China
  • Received:2021-04-27 Online:2021-12-25 Published:2021-12-28
  • Contact: Su-hua ZHANG,Cheng-tao LI

摘要: 目的

评估ForenSeqTM DNA Signature Prep试剂盒(以下简称ForenSeq试剂盒)对浙江畲族人群STR序列的解读能力及法医学应用效能。

方法

应用MiSeq FGx法医基因组学系统和ForenSeq试剂盒对50例浙江畲族人群样本进行大规模平行测序(massively parallel sequencing,MPS)检测,采用ForenSeqTM通用分析软件分析测序数据,获取58个STR基因座的分型结果及序列结构信息。将MPS与PCR-CE技术的分型结果进行一致性比对,并计算等位基因频率和群体遗传学参数。

结果

在50例浙江畲族人群样本中,共观察到448种序列多态性等位基因,与PCR-CE技术检测的片段长度多态性结果相比,基于ForenSeq试剂盒的MPS检测增加了82个等位基因,在6个基因座的侧翼区共发现7个SNP变异。22例男性的24个Y染色体STR基因座中共检测到19种单倍型。27个常染色体STR基因座的累积个体识别率为1-8.87×10-30,累积二联体非父排除率为0.999 999 962 640 657,累积三联体非父排除率为0.999 999 999 999 633。

结论

基于MiSeq FGx法医基因组学系统使用ForenSeq试剂盒进行MPS检测,极大提高了检测效能。58个STR基因座在所调查的浙江畲族人群中具有良好的遗传多态性,可应用于法医学个体识别和亲权鉴定。

关键词: 法医遗传学, 大规模平行测序, 短串联重复, 多态现象,遗传, ForenSeqTM DNA Signature Prep试剂盒, 畲族, 浙江

Abstract: Objective

To evaluate the ability of the ForenSeqTM DNA Signature Prep kit (ForenSeq kit) in analyzing the sequence information of STRs in Zhejiang She ethnic group and its forensic application efficacy.

Methods

A total of 50 Zhejiang She ethnic group samples were sequenced with the ForenSeq kit on the MiSeq FGx platform. The data was analyzed using ForenSeqTM universal analysis software to obtain the motif structure and flank regions of the 58 STRs, then compared with PCR-CE typing results to test the consistency. At last, the allele frequency and population genetic parameters were calculated.

Results

A total of 448 sequence polymorphic alleles were detected in 50 samples of Zhejiang She ethnic group. Compared with fragment length polymorphism detected by PCR-CE, 82 alleles were increased by MPS detection based on ForenSeq kit, and 7 SNPs variation were detected in the flanking regions of 6 loci. The 22 male individuals were genotyped, and total 19 haplotypes were detected in 24 Y chromosome STRs of these 22 males. The cumulative discrimination power of the 27 autosomal STRs was 1-8.87×10-30, the cumulative probability of exclusion of duo-testing was 0.999 999 962 640 657, the cumulative probability of exclusion of trios-testing was 0.999 999 999 999 633.

Conclusion

Based on MPS typing technology, using the ForenSeq kit greatly improves the detection efficiency. In addition, the 58 STRs have good genetic polymorphisms in Zhejiang She ethnic group, which are suitable for individual identification and paternity identification in forensic application.

Key words: forensic genetics, massively parallel sequencing, short tandem repeat (STR), polymorphism, genetic, ForenSeqTM DNA Signature Prep kit, She ethnic group, Zhejiang

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