TaqMan MGB探针法实时荧光定量PCR快速检测支原体的研究

目的:建立特异、敏感、快速检测支原体的TaqMan MGB探针实时荧光定量PCR方法。方法:针对支原体16S rRNA基因的保守区设计特异性引物和探针,建立支原体TaqMan MGB探针实时荧光定量PCR方检测方法,验证方法的特异性、敏感性和稳定性。对2008～2010年期间在北京采集的680份小型猪、小鼠、大鼠样本中的支原体进行检测,同时进行分离培养和常规PCR检测。结果:建立的TaqMan MGB探针实时荧光定量PCR方法对支原体的检测具有高度的特异性,对空肠弯曲菌、支气管鲍特杆菌、肺炎克雷伯杆菌、侵肺巴斯德氏菌、大肠埃希菌、铜绿假单胞菌、肺炎链球菌、乙型溶血性链球菌均无交叉反应,检测的灵敏度达9.2拷贝。标准曲线显示各浓度范围内具有良好的线性关系,相关系数为0.999,斜率为-3.328,TaqManMGB探针实时荧光定量PCR效率为100%。对680份动物样本进行检测,结果TaqMan MGB探针实时荧光定量PCR和常规PCR均能检出77份支原体阳性样本,但分离培养未能检出支原体阳性样本。结果显示,建立的TaqMan MGB探针实时荧光定量PCR方法比细菌分离培养方法更敏感,能够直接从动物样本中检出支...

TaqMan MGB probe real-time fluorescence quantitative PCR for rapid detection of Mycoplasma

Objective:To develop a TaqMan MGB probe-based,sensitive and specific real-time fluorescence quantitative PCR assay for rapid detection of Mycoplasma.Methods:Primers and probes specific to 16S rRNA gene of Mycoplasma were designed.A TaqMan MGB probe-based,real-time fluorescence quantitative PCR was established.The specificity,sensitivity and stability of the assay were assessed.Then,the established TaqMan MGB probe real-time fluorescence quantitative PCR assay was applied to detect Mycoplasma in 680 specimen...