鄭 武,楊,詹翊宇,黃和鳴,徐彩龍,江道赫
(福州市刑事科學技術研究所,福州 350011)
福建漢族人群D6S1043、D12S391和D1S1656基因座遺傳多態性
(福州市刑事科學技術研究所,福州 350011)
目的 調查D6S1043、D12S391和D1S1656 3個STR基因座在福建漢族人群中的遺傳多態性。方法 應用STRtyper-21G試劑盒對福建地區400名漢族無關個體血樣進行PCR擴增,經3130XL型遺傳分析儀電泳檢測,用GeneMapper ID V3.2軟件進行等位基因分型。結果 D61S1043基因座共檢出21個等位基因,D12S391基因座共檢出13個基因型,D1S1656基因座共檢出15個基因型。D6S1043的H值為0.877,PIC值為0.870,DP值為0.972,PE值為0.749;D12S391的H值為0.850,PIC值為0.830,DP值為0.956,PE值為0.694;D1S1656的H值為0.840,PIC值為0.810,DP值為0.952,PE值為0.674。D6S1043、D12S391、D1S1656 3個基因座DP值均大于0.9,PIC值均大于0.8,H值均大于0.8。結論 D6S1043、D12S391、D1S1656 3個基因座屬于高鑒別力、高雜合度、高信息量基因座,適用于福建漢族法醫學個體識別及親權鑒定。
法醫遺傳學;短串聯重復序列(STR);遺傳多態性
DOΙ: 10.16467/j.1008-3650.2015.02.018
ASTRACT: Objective To investigate the genetic polymorphism of 3 short tandem repeat loci (D6S1043、D12S391 and D1S1656) of Han population in Fujian, China.Methods PCR amplification and capillary electrophoresis were used to determine the genotypes of 3 STR loci for 400 non-relative individuals.Results 21 alleles were identifi ed in D6S1043 while 13 ones in D12S391 and 15 in D1S1656.The heterozygosities of the loci D6S1043, D12S391 and D1S1656 were 0.877,0.850 and 0.840, respectively, with polymorphic information contents of 0.870, 0.830 and 0.810, discrimination powers 0.972, 0.956 and 0.952, and probability of paternity exclusion 0.749, 0.694 and 0.674, respectively.Statistical analysis of 3 STR loci showed that their discrimination power was greater than 0.9 with both their polymorphic information content and the heterozygosity greater than 0.8.Conclusions These 3 STR loci (D6S1043, D12S391 and D1S1656) can be applied in the individual identifi cation and paternity test in Han population of Fujian, China.
KWY WORDS: forensic genetics; short tandem repeats (STR); genetic polymorphism
400 份血樣來自本實驗室2013年前科違法犯罪人員庫血樣中福建省漢族人群無關個體。采用10μL擴增反應體系,其各成分配比及熱循環參數參照STRtyper-21G直接擴增熒光檢測試劑盒(海爾施基因科技公司)說明書,應用ABI 3130XL基因分析儀進行STR基因座的檢測與分型。用Data collection進行收集數據,GeneMapper ID V3.2軟件進行等位基因分型。參照鄭秀芬所述方法[1],計算福建地區人群D6S1043、D12S391和D1S1656 3個基因座的等位基因分布頻率,以及各STR基因座的雜合度(H)、多態信息含量(PIC)、非父排除率(PE)、個體識別能力(DP)。
福建漢族人群3個STR基因座的等位基因及基因頻率見表1。D61S1043共檢出21個等位基因,D12S391共檢出13個基因型,D1S1656共檢出15個基因型。3個STR基因座在漢族群體中的多態性及其遺傳學應用參數見表2?!?br>