Abstract
目的 研究建立实时荧光定量聚合酶链反应(RFQ-PCR)检测人B细胞激活因子受体(BAFF-R)含量的方法,及探讨其在外周血单个核细胞(PBMC)中BAFF-R mRNA表达的检测价值.方法在BAFF-R基因高保守区设计特异性引物和荧光探针,用逆转录(RT-PCR)扩增目的片段实时检测产物的荧光强度,根据标准品建立标准曲线,由软件自动计算出待测样本中BAFF-R mRNA含量,并以 BAFF-R mRNA和β2M mRNA含量的比值进行BAFF-R表达水平评价.结果 RFQ -PCR检测BAFF-R含量的线性范围为109 ~101 pg/ml,低浓度样本批内和批间变异系数(CV)分别为12.5%和11.9%,高浓度样本批内和批间CV分别为8.3%和9.3%.30名健康献血员样本的PBMC中,83%(25/30)有BAFF-R mRNA表达,范围为0.14~1.03.结论 RFQ -PCR检测BAFF-R mRNA含量的方法,具有较好的检测灵敏度和重复性。
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