法医学杂志

法医学杂志 ›› 2007, Vol. 23 ›› Issue (5): 338-341.

• 论文 • 上一篇    下一篇

5个STR基因座的遗传多态性及其法医学应用

李莹;罗海玻;宋燕华;陈骁;龙兵;陈国弟;   

  1. 四川大学华西基础医学与法医学院,四川大学华西基础医学与法医学院,四川大学华西基础医学与法医学院,四川大学华西基础医学与法医学院,四川大学华西基础医学与法医学院,四川大学华西基础医学与法医学院 四川成都610041,四川成都610041,四川成都610041,四川成都610041,四川成都610041,四川成都610041
  • 发布日期:2007-10-25 出版日期:2007-10-28

Polymorphism of Five Short Tandem Repeat Systems in Chinese Han Population in Chengdu

LI YING,LUO HAI-BO,SONG YAN-HUA,CHEN XIAO,LONG BIN,CHEN GUO-DI (WEST CHINA SCHOOL OF PRECLINICAL AND FORENSIC MEDICINE,SICHUAN UNIVERSITY,CHENGDU 610041,CHINA)   

  • Online:2007-10-25 Published:2007-10-28

摘要： 目的获得D11S4951、D11S4957、GATA193H05、D2S2951、D6S2421基因座的群体遗传学数据,并分析其在法医学中的应用价值。方法随机抽取成都地区汉族群体无血缘关系个体的静脉血,EDTA抗凝,用Chelex-100法提取DNA,应用PCR技术,扩增上述5个短串联重复序列基因座,聚丙烯酰胺凝胶垂直板电泳分型。结果5个基因座在中国成都汉族人群中分别发现了7、10、8、6、8个等位基因,5个基因座的基因型分布符合Hardy-Weinberg平衡(P>0.05)。各基因座的杂合度分别为0.743、0.772、0.833、0.650和0.800;非父排除概率分别为0.497、0.549、0.662、0.356和0.599;个人识别几率分别为0.863、0.912、0.947、0.829和0.931。结论5个基因座在中国汉族群体中具有法医学应用价值。

关键词: 短串联重复序列, 聚合酶链反应, 电泳, 遗传多态性

Abstract: Objective To obtain population genetic data of loci D11S4951,D11S4957,GATA193H05,D2S2951,and D6S2421 in Han population in Chengdu area and to validate the value of their forensic application. Methods Blood samples were collected in EDTA tubes from unrelated individuals. DNAs were extracted with Chelex-100 and were analyzed by PCR and horizontal PAGE followed by silver staining. Results Alleles 7,10,8,6 and 8 were found in 5 STR loci,respectively. No deviations from Hardy-Weinberg balance were observed. The heterozygosities observed were 0.743,0.772,0.833,0.650 and 0.800,respectively. The chances of exclusion were 0.497,0.549,0.662,0.356 and 0.599,and the discrimination powers were 0.863,0.912,0.947,0.829 and 0.931. Conclusion All of the five loci studied may be useful markers for individual identification and paternity testing.

Key words: short tandem repeats, polymerase chain reaction, electrophoresis, genetics polymorphism