CYP2D6 PCR基因型与DXT表型和基因芯片检测的比较

目的：为了评价CYP2D6的基因型和表型的联系以及基因芯片在CYP2D6多基因分析中的应用。方法：242健康志愿者，口服dextromethorphan后收集认测定其代谢率，收集20ml血提取DNA，并通过基因特异性PCR和／（或）基因芯片分析CYP2D6＊2－＊11，＊17和多拷贝CYP2D6基因，其中5个基因（＊3，＊4，＊6，＊7和＊9）用PCR和CYD450基因芯片同时分析。结果：CYP2D6基因型比表型更富有信息和更能反映CYP2D6酶的表达。CYP2D6＊3，＊4，＊6，＊6和＊9的基因检测在CYP450基因芯片和基因特异性PCR中显示高度的一致性。结论：基因芯片在检测基因多位点的多基因中是一个有发展前途和可靠的方法。

Comparison of CYP2D6 genotyping by allele-specific PCR with DXT phe-notype and gene chip testing

AIM: To evaluate association of genotype and phenotype of CYP2D6 and the application of oligonucleotide microarray hybridization genetic testing in CYP2D6 multiple alleles analyses. METHODS: Two hundred forty-two healthy volunteers were recruited, and a 60 mg oral dose of dextromethorphan (DXT) was administered to each for assessment of the DXT metabolic ratio . A 20 ml blood sample was also collected for DNA isolation and testing. CYP2D6 alleles *2--*11; *17 and multiple CYP2D6 gene copies were tested by allele-specific PCR and/or the affymetrix CYP450 gene chip assay. Five of the CYP2D6 alleles (*3, *4, *6, *7, and *9) were evaluated by both PCR and the CYP450 gene chip assay. RESULTS: The CYP2D6 genotype was more informative and reflective in CYP2D6 enzyme expression than a phenotype. Genetic tests for the CYP2D6 *3, *4, *6, *7 and *9 alleles showed a high degree of concordance between the CYP450 gene chip and AS-PCR methods. CONCLUSION: Oligonucleotide microarray hybridization is a promising and reliable approach for detecting multiple alleles at gene loci.