目的应用二代测序(next generation sequencing,NGS)技术对CSF1PO和D18S51基因座进行分析检测,研究CSF1PO和D18S51基因座的序列多态性。方法采集165例中国汉族无关个体外周血样,应用QIAamp DNA Mini试剂盒提取样本DNA,Ion Plus Fragment...目的应用二代测序(next generation sequencing,NGS)技术对CSF1PO和D18S51基因座进行分析检测,研究CSF1PO和D18S51基因座的序列多态性。方法采集165例中国汉族无关个体外周血样,应用QIAamp DNA Mini试剂盒提取样本DNA,Ion Plus Fragment Library试剂盒构建文库,在Ion Torrent PGMTM测序平台上进行DNA序列测定,针对新发现的等位基因进行Sanger测序验证。应用Torrent SuiteTMv5.0.2和Integrative Genomics Viewer软件分析数据,进行基因型鉴定和频率统计,运用PowerState v12软件对数据进行统计学处理。结果应用NGS技术同时获得了CSF1PO和D18S51基因座长度多态性和序列多态性,在CSF1PO基因座中,发现了1个新的基因型,在D18S51基因座中,发现2个新的基因型。采用Sanger测序法对NGS技术检测新发现的等位基因进行验证,验证结果一致。结论应用二代测序技术可检测CSF1PO和D18S51基因座核心重复序列的结构,提高基因座的识别效能。展开更多
The custom-designed single nucleotide polymorphism(SNP)panel amplified 231 autosomal SNPs in one PCR reaction and subsequently sequenced with massively parallel sequencing(MPS)technology and Ion Torrent personal genom...The custom-designed single nucleotide polymorphism(SNP)panel amplified 231 autosomal SNPs in one PCR reaction and subsequently sequenced with massively parallel sequencing(MPS)technology and Ion Torrent personal genome machine(PGM).SNPs were chosen from SNPforID,IISNP,HapMap,dbSNP,and related published literatures.Full concordance was obtained between available MPS calling and Sanger sequencing with 9947A and 9948 controls.Ten SNPs(rs4606077,rs334355,rs430046,rs2920816,rs4530059,rs1478829,rs1498553,rs7141285,rs12714757 and rs2189011)with low coverage or heterozygote imbalance should be optimized or excluded from the panel.Sequence data had sufficiently high coverage and gave reliable SNP calling for the remaining 221 loci with the custom MPS-SNP panel.A default DNA input amount of 10 ng per reaction was recommended by Ampliseq technology but sensitivity testing revealed positive results from as little as 1 ng input DNA.Mixture testing with this panel is possible through analysis of the F MAR(frequency of major allele reads)values at most loci with enough high coverage depth and low level of sequencing noise.These results indicate the potential advantage of the custom MPS-SNP assays and Ion Torrent PGM platform for forensic study.展开更多
目的应用Ion Torrent半导体靶向测序技术检测1例枫糖尿症(MSUD)患儿的致病基因突变,明确其致病突变,并探讨该技术用于复杂单基因病检测的可行性。方法采集患儿外周血,提取基因组DNA,经多重PCR扩增富集目的基因片段,构建平均片段大小为30...目的应用Ion Torrent半导体靶向测序技术检测1例枫糖尿症(MSUD)患儿的致病基因突变,明确其致病突变,并探讨该技术用于复杂单基因病检测的可行性。方法采集患儿外周血,提取基因组DNA,经多重PCR扩增富集目的基因片段,构建平均片段大小为300bp左右的文库,经乳液PCR及磁珠颗粒富集,最后采用318半导体测序芯片进行高通量测序,应用Ion Torrent Suite v3.0软件进行数据提取、序列比对及SNPs和Indels提取,再用dbSNP 137数据库过滤得到SNPs和Indels,可疑突变经Sanger法测序验证。结果检出患儿1个新发错义点突变并通过Sanger测序验证,突变是BCKDHB基因第6外显子的NM183050:c.586C>T(p.His196Tyr)。结论 Ion Torrent半导体靶向测序技术可对复杂单基因遗传病进行快速、准确地基因诊断。展开更多
文摘目的应用二代测序(next generation sequencing,NGS)技术对CSF1PO和D18S51基因座进行分析检测,研究CSF1PO和D18S51基因座的序列多态性。方法采集165例中国汉族无关个体外周血样,应用QIAamp DNA Mini试剂盒提取样本DNA,Ion Plus Fragment Library试剂盒构建文库,在Ion Torrent PGMTM测序平台上进行DNA序列测定,针对新发现的等位基因进行Sanger测序验证。应用Torrent SuiteTMv5.0.2和Integrative Genomics Viewer软件分析数据,进行基因型鉴定和频率统计,运用PowerState v12软件对数据进行统计学处理。结果应用NGS技术同时获得了CSF1PO和D18S51基因座长度多态性和序列多态性,在CSF1PO基因座中,发现了1个新的基因型,在D18S51基因座中,发现2个新的基因型。采用Sanger测序法对NGS技术检测新发现的等位基因进行验证,验证结果一致。结论应用二代测序技术可检测CSF1PO和D18S51基因座核心重复序列的结构,提高基因座的识别效能。
基金supported by grants from the National Natu-ral Science Foundation of China[grant number 81330073],[grant number 81302620]the Ministry of Science and Technology of China[grant number 2016YFC0800703]the Science and Technology Commission of Shanghai Municipality[grant number 14DZ2270800].
文摘The custom-designed single nucleotide polymorphism(SNP)panel amplified 231 autosomal SNPs in one PCR reaction and subsequently sequenced with massively parallel sequencing(MPS)technology and Ion Torrent personal genome machine(PGM).SNPs were chosen from SNPforID,IISNP,HapMap,dbSNP,and related published literatures.Full concordance was obtained between available MPS calling and Sanger sequencing with 9947A and 9948 controls.Ten SNPs(rs4606077,rs334355,rs430046,rs2920816,rs4530059,rs1478829,rs1498553,rs7141285,rs12714757 and rs2189011)with low coverage or heterozygote imbalance should be optimized or excluded from the panel.Sequence data had sufficiently high coverage and gave reliable SNP calling for the remaining 221 loci with the custom MPS-SNP panel.A default DNA input amount of 10 ng per reaction was recommended by Ampliseq technology but sensitivity testing revealed positive results from as little as 1 ng input DNA.Mixture testing with this panel is possible through analysis of the F MAR(frequency of major allele reads)values at most loci with enough high coverage depth and low level of sequencing noise.These results indicate the potential advantage of the custom MPS-SNP assays and Ion Torrent PGM platform for forensic study.
文摘目的应用Ion Torrent半导体靶向测序技术检测1例枫糖尿症(MSUD)患儿的致病基因突变,明确其致病突变,并探讨该技术用于复杂单基因病检测的可行性。方法采集患儿外周血,提取基因组DNA,经多重PCR扩增富集目的基因片段,构建平均片段大小为300bp左右的文库,经乳液PCR及磁珠颗粒富集,最后采用318半导体测序芯片进行高通量测序,应用Ion Torrent Suite v3.0软件进行数据提取、序列比对及SNPs和Indels提取,再用dbSNP 137数据库过滤得到SNPs和Indels,可疑突变经Sanger法测序验证。结果检出患儿1个新发错义点突变并通过Sanger测序验证,突变是BCKDHB基因第6外显子的NM183050:c.586C>T(p.His196Tyr)。结论 Ion Torrent半导体靶向测序技术可对复杂单基因遗传病进行快速、准确地基因诊断。
