双色荧光杂交芯片在近交系小鼠遗传监测中的应用

应用一种新的高通量SNP检测方法-双色荧光杂交芯片技术进行近交系小鼠遗传监测。应用双色荧光杂交芯片技术对4个品系近交系小鼠的多个基因组DNA样本进行SNP分型,整合6个SNP位点的芯片杂交信息,对样本所属品系进行判断。研究结果表明SNP检测方法-双色荧光杂交芯片技术能够对选定的6个SNP位点进行高准确率分型;双色荧光杂交芯片技术是一种高通量SNP检测的良好工具,适合于对少量近交系品系来源的大样本量小鼠进行遗传污染监测和品系鉴定,并具有扩大应用的潜力。

Application of Dual-color Fluorescence Hybridization Chip Technique in the Monitoring of the Genetic Quality of Inbred Mice Strains

This study aimed to use a microarray-based method for scoring a number of genomic DNA in parallel for one SNP marker on a glass slide for the genetic monitoring of inbred mice. We applied the method to identify inbred laboratory mice strains to validate the reliability and stability of this genotyping panel. The amplified PCR products from four inbred strains were spotted and immobilized onto amino-modified glass slides to generate a microarray, which was then interrogated by hybridization with dual-color probes to determine the SNP genotype of each sample. The results indicated that this microarray-based method could effectively determine the genotype of the six selected SNPs with a high degree of accuracy. This SNP genotyping method is feasible for monitoring genetic contamination in colonies of limited genetic diversity. Moreover, an enlarged version of the panel could be used to analyse a large number of strains.