生物技术进展 ›› 2023, Vol. 13 ›› Issue (1): 107-114.DOI: 10.19586/j.2095-2341.2022.0095

• 研究论文 • 上一篇    下一篇

59个Y-STR基因座的法医学多态性应用效能评估

刘大宇1(), 徐际超2, 曾滢2,3, 徐曲毅2, 刘宏2, 李越2, 刘长晖2()   

  1. 1.广州市公安局黄埔区分局,广州 510700
    2.广州市刑事科学技术研究所,广州 510442
    3.南方医科大学法医学院,广州 510515
  • 收稿日期:2022-06-01 接受日期:2022-08-30 出版日期:2023-01-25 发布日期:2023-02-07
  • 通讯作者: 刘长晖
  • 作者简介:刘大宇 E-mail:408039613@qq.com
  • 基金资助:
    广州市科技计划项目(2019030014)

Efficacy Evaluation of Forensic Polymorphism Application of 59 Y-STR

Dayu LIU1(), Jichao XU2, Ying ZENG2,3, Quyi XU2, Hong LIU2, Yue LI2, Changhui LIU2()   

  1. 1.Huangpu Branch of Guangzhou Public Security Bureau,Guangzhou 510700,China
    2.Guangzhou Institute of Forensic Science,Guangzhou 510442,China
    3.School of Forensic Medicine,Southern Medical University,Guangzhou 510515,China
  • Received:2022-06-01 Accepted:2022-08-30 Online:2023-01-25 Published:2023-02-07
  • Contact: Changhui LIU

摘要:

为了评估法医学DNA数据库建设中涉及的59个Y-STR基因座的遗传多态性和法医学应用效能,通过AGCU Y SUPP PLUS试剂盒和AGCU Y37试剂盒检测374个广东汉族无关男性个体,将检测出的59个Y-STR基因座按照突变率的高低进行分类组合和统计分析。结果显示,59个Y-STR基因座联合运用在374个无关男性个体中检出了374个单倍型,其中44个中低突变Y-STR组合、15个高快突变Y-STR组合分别检出373和372个单倍型。59个Y-STR的基因多态性数值分布在0.055 1 (DYS645)~0.958 0 (DYF387S1 a/b)之间。结果表明,这59个Y-STR在广东汉族群体中均具有良好的多态性,按中低突变Y-STR组合和高快突变Y-STR组合研发新的检测体系可更好地满足法医实践的不同需求。

关键词: 法医遗传学, Y-STR, 中低突变Y-STR, 高快突变Y-STR, 单倍型

Abstract:

To evaluate the polymorphism of 59 Y-STR loci, being involved into forensic DNA database construction, a total of 374 unrelated Guangdong Han-ethnic male individuals were genotyped with both AGCU Y SUPP PLUS and AGCU Y37 kits by their different combinations, along with the resultant forensic efficiency appraised. The efficiency of 59 Y-STRs was estimated according to different genetic categories: high-and-rapid and/or slow-and-moderate mutating Y-STR combinations. The results showed that of the 374 Guangdong Han-ethnic unrelated male individuals, 374 haplotypes were detected by all the Y-STR 59-locus combination, with 372 and 373 ones being discovered from the high-and-rapid mutating 15-locus Y-STRs and slow-and-moderate 44-locus Y-STRs, respectively. The values of gene diversity ranged from 0.055 1 (DYS645) to 0.958 0 (DYF387S1 a/b). Both two kits are of great polymorphism in Guangdong Han-ethnic population, suggesting that the various forensic requirements will be better met if novel testing systems are to develop based on the combination of slow-and-moderate and/or high-and-rapid mutating Y-STRs.

Key words: forensic genetics, Y-STR, slow-and-moderate mutating Y-STR, high-and-rapid mutating Y-STR, haplotype

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