Haplotype Analysis of 9 STR_S Loci on Human Y Chromosome in Han Ethnic Group of Kunming City / 医学研究杂志

Objective To study the haplotype diversity of DYS390、DYS393、DYS437、DYS438、DYS439、DYS447、DYS448、DYS460、H4 loci in 216 unrelated individuals in Han ethnic group of Kunming city,Yunnan province.Methods The DNA were extracted with Chloroform,phenol methods or Chelex-100 method.STR-PCR,Non-denaturing polyacylaminde gel electrophoresis and Sliver staining and ABI377 sequencer were carried out for study.216 undividuals were collected from Han ethnic group in Kunming city.Results 216 types of haplotype were detected from 9 STRS.Every haplotype frequence was detected at 0.0046,GD=1.00005934437,The lowest arrangement of the repeat units was detected at 0.0046.S E=1.25?10-9。Conclution The 9 Y-STRs loci of Kunming people are highly polymorphic and are powerful means in determination of identify and paternity for forensic practice.

Population Study of Y-chromosome STR Haplotypes in Koreans / 대한법의학회지

The Y-chromosome short tandem repeat (STR) systems including DYS391, DYS389I/II, DYS439, DYS438, DYS437, DYS19, DYS392, DYS393, DYS390 and DYS385 (PowerPlex Y System, Promega) were investigated in 569 Korean males (the Central region). A total of 473 haplotypes were observed in the 569 individuals studied, of which 426 (90.06%) were unique. The overall haplotype diversity for the 12 Y-STR loci was 0.9985, and the discrimination capacity was 0.8313. The gene diversity varied from 0.2586 at DYS391 to 0.9558 at DYS385. We scrutinized for the presence of non-standard (intermediate and duplicated) alleles among Y chromosome STR haplotypes. Three mutations were identified in three short tandem repeat (STR) loci DYS439, DYS19 and DYS385. In DYS439, we found a new mutant allele that added an A at upstream of the first GATA motif of the repeat region. The allele was designated 11.1 according to the sequence structure. We also detected a duplicate allele in DYS19 and a triplicate allele at DYS385 locus.

Analysis of Mitochondrial and Y-chromosomal DNA from 350-Year-Old Mummified Human Tissue / 대한법의학회지

This paper describes the successful DNA extraction and amplification, and analysis of mitochondrial and Y-chromosomal DNA from an approximately 350-year-old mummy exhumed from Gyunggi-do, South Korea in 2001. Sample tissue was obtained from internal organs such as lung, liver, and muscle of the mummy. Mummy tissue was rehydrated in trisodium phosphate solution, and protein was digested by proteinase K. Sample DNA was extracted using phenol-chloroform-isoamyl alcohol and silica column. Every step of DNA extraction and PCR was cautiously carried out according to general guideline to prevent contamination of the sample DNA. PCR products of mitochondial DNA (mtDNA) were observed with good yield, and sequence analysis of the mtDNA was successfully accomplished in the control regions (HV1, HV2, and HV3). In addition, minimal haplotype Y-STRs were tried to analysis. However, DYS19, DYS389l, DYS390, DYS391, DYS392 and DYS393 were only amplified and clearly genotyped. Sequence analysis of mtDNA and YSTR genotyping were performed more than twice with time intervals, and the results were accepted only when they showed the even profile for authenticating mummy DNA. There are some difficulties in the analysis of DNA from ancient mummified human remains has wellknown problems, such as low template quantity, poor quality of DNA, and the presence of PCR inhibitors. This implies that the most critical factor for ancient DNA analysis is extraction of DNA. In order to overcome these troubles, we used DNA extraction using phenol-chloroform-isoamyl alcohol and silica column and optimized PCR condition. Therefore, the analysis of mtDNA and Y-STRs from mummy was successfully performed.