[Detection of ABO genotype genetic polymorphism by multiplex-PCR based sequencing and application in forensic medicine].
Multiplex PCR-direct sequencing method was established to detect 9 different SNPs in exon 6 and exon 7 of ABO genes and could identify at least 28 different ABO genotypes. Population study was carried out in a sample of 80 unrelated Chinese Tibetan minority individual dwelled in Qinghai Province. The method was also applied to forensic cases. A variety of degeneration forensic samples, including blood stain, hair root, swab, bone and mixed stain were successfully identified by this efficient method and in conformance with serological typing. There were no significant deviations from Hardy-Weinberg equilibrium in ABO genotypes of Tibetan population. The heterozygosity, polymorphic information content, discrimination power, paternity of exclusion, and probability of genetic identity were 0.675, 0.672, 0.874, 0.391, and 0.126 respectively. The gene frequency of ABO was O>B>A. The multiplex PCR-directed sequencing method can accurately and reliably detect ABO genotypes in many kinds of samples, and it improves personal identification efficiency. The ABO genotype is high variance in Qinghai Tibetan minority group, and it can be applied in forensic medicine and population genetic study.
Department of Forensic Science, College of Medicine, Xi'an Jiaotong University, Xi'an 710061, China. chenfeng418@stu.xjtu.edu.cn
Feng
F
Chen
Teng
T
Chen
Chun-Xia
CX
Yan
Yong-Hui
YH
Dang
Hao-Fang
HF
Mu
Xiao-Guang
XG
Yu
Bo
B
Zhang
Ya-Jun
YJ
Deng
D000017:ABO Blood-Group System / Q000235:genetics*; D044466:Asian People / Q000235:genetics; D005554:Forensic Medicine / Q000379:methods*; D005828:Genetics, Population; D005838:Genotype; D006801:Humans; D016133:Polymerase Chain Reaction / Q000379:methods*; D011110:Polymorphism, Genetic / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide / Q000235:genetics
D000017:ABO Blood-Group System