流产组织胎儿STR(short tandem repeats)分型检测长久以来始终是法医DNA检验面临的一大难题,对于孕早期流产组织无法通过组织形态学检验获取绒毛组织时,母体与胎儿混合STR分型结果可以为强奸致孕案件嫌疑人认定提供关键依据.本研究应用新一代测序技术,在4份强奸致孕早期流产组织中成功检出母体与疑似胎儿混合STR分型或疑似胎儿单一STR分型,与Y-STR、侧翼序列信息联合应用,为嫌疑人认定提供了更为全面可靠的遗传学依据.
Fetal STR typing and paternity identification of early pregnancy aborted tissue based on next-generation sequencing technology
Fetal STR typing of aborted tissue has long been a major problem in forensic DNA.Especially for the first trimester abortion tissue,it is difficult to isolate the embryonic components by histomorphological means,resulting in the inability to accurately obtain the STR typing of the fetus.The mixed STR typing results of mother and fetus can provide a key basis for the identification of suspects in cases of rape-induced pregnancy.In this study,next generation sequencing was used to successfully detect mixed STR typing of mother and suspected fetus or single STR typing of suspected fetus in 4 rape-induced early pregnancy abortion tissues.Combined with Y-STR and flank sequence information,it provides a more comprehensive and reliable genetic basis for the identification of suspects.
Forensic scienceAborted tissueNext generation sequencingShort tandem repeatsMixed STR typing
NETL
NSTL
万方数据
