法医学杂志 ›› 2012, Vol. 28 ›› Issue (3): 190-194.DOI: 10.3969/j.issn.1004-5619.2012.03.008

• 论著 • 上一篇    下一篇

利用STR和Y染色体二等位基因标记鉴定同胞兄弟关系

汤美云1,黄  健1,蔡金洪1,黄晓松1,徐  玮2,瞿志雄1,单飞豹1,陆惠玲3   

  1. (1. 湖南省第二人民医院芙蓉司法鉴定中心,湖南 长沙 410007; 2. 湖南省人民医院临床医学研究所,湖南 长沙 410007; 3. 中山大学中山医学院法医物证学教研室,广东 广州 510089)
  • 发布日期:2012-06-25 出版日期:2012-06-28
  • 通讯作者: 陆惠玲,女,教授,主要从事法医物证学教学与研究;E-mail:luhl@mail.sysu.edu.cn
  • 作者简介:汤美云(1974—),女,湖南衡山人,硕士,主检法医师,主要从事法医物证鉴定;E-mail:tangmeiyun2000@yahoo.com.cn

Identification of Sibling Brothers Using STR and Y-biallelic Markers

TANG MEI-YUN1, HUANG JIAN1, CAI JIN-HONG1, HUANG XIAO-SONG1, XU WEI2, QU ZHI-XIONG1, SHAN FEI-BAO1, LU HUI-LING3   

  1. (1. Furong Forensic Science Identification Center of Hunan Second People’s Hospital, Changsha 410007, China; 2. Institute of Clinical Medicine, Hunan People’s Hospital, Changsha 410007, China; 3. Department of Forensic Biology, Zhongshan Medical College, Sun Yat-sen University, Guangzhou 510089, China)
  • Online:2012-06-25 Published:2012-06-28

摘要: 目的 通过检测常染色体以及Y染色体二等位基因标记,探讨Y-STR基因座突变情形下的同胞兄弟鉴定策略。 方法 对被鉴定的两名男性个体,采用Goldeneye 20A试剂盒和18NC试剂盒检验35个常染色体STR基因座,采用PowerPlex® Y试剂盒和Yfiler试剂盒检验Y染色体上16个STR基因座,根据ITO法计算全同胞指数,采用片段长度差异等位基因特异性PCR或普通PCR法对20个Y染色体二等位基因标记进行分型检测。 结果 35个常染色体STR基因座的累积全同胞指数为4.314 9×106,两名被鉴定人16个Y-STR基因座有2个发生突变,20个Y染色体二等位基因标记分型结果均相同,支持两个体为全同胞兄弟关系。 结论 对于发生Y-STR突变的父系鉴定案例,可补充检验Y染色体SNP和InDel等二等位基因遗传标记。

关键词: 法医遗传学;同胞;染色体, 人, Y;STR;突变;二等位基因

Abstract: Objective To explore the methods for identification of sibling brothers with Y-STR locus mutation by detection of genetic markers on autosome and Y-biallelic. Methods Goldeneye 20A and 18NC kit were used to genotyped the 35 STRs on autosome from two men. PowerPlex® Y kit and Yfiler kit were used to genotyped the 16 STRs on Y chromosome full sibling index was calculated by ITO method. Twenty Y-biallelic markers were genotyped by fragment length discrepant allele specific PCR or general PCR. Results Relationship of sibling brothers was found to have mutation of 2 loci on 16 Y-STR and the identical genetype of 20 Y-biallelic markers as well as a cumulative full sibling index of 4.314 9×106 from 35 STRs on autosome. Conclusion In identification of paternal linage of Y-STR mutation, more genetic information can be acquired by detection of Y-biallelic markers including SNP and InDel.

Key words: forensic genetics, siblings, chromosomes, human, Y, STR, mutation, biallelic

中图分类号: