肿瘤研究常用动物犬和猴病原菌16srDNA检测方法的建立

摘要

目的：建立肿瘤研究常用动物犬和猴病原菌的16s rDNA PCR检测方法。方法：提取犬病原菌布鲁杆菌、空肠弯曲杆菌、小肠结肠炎耶尔森菌和猴病原菌志贺氏菌DNA，经过通用引物扩增，PCR产物为病原菌16s rDNA全长，经纯化后直接测序。利用BLAST软件从GenBank数据库中搜索相关菌株的序列进行序列比对和同源性分析，确定病原菌的种属。结果：测序结果与数据库中搜索到的相关菌株的序列进行序列比对显示，4种病原菌测序分别与布鲁杆菌、空肠弯曲杆菌、小肠结肠炎耶尔森菌和志贺氏菌序列一致。结论：利用16s rDNA PCR方法可快速准确地检测肿瘤研究常用动物犬和猴病原菌，对保证肿瘤研究准确性有重要意义。%Objective:To establish the pathogen detection method in dog and monkey commonly used animal for cancer research. Methods:The DNA of Brucella spp,Campylobaceter jejuni,Yersinia enterocolitica and Shigella spp confirmed by conventional methods were extracted. The full length of 16s rDNA was amplified with a set of universal primers. The PCR products were purified and sequenced directly. The related sequences were obtained from the Gen-Bank database using BLAST search software and the species of the pathogen were identified according to the sequence analysis and homology comparison of the 16s rDNA sequences. Results:The 16s rDNA sequences of the four pathogen were 100% concordance with the known standard nueleotide sequences of Brucella spp,Campylobaceter jejuni, Yersinia enterocolitica and Shigella spp. Conclusion:The PCR method based on 16s rDNA was reliable and could i-dentify dog and monkey the pathogen rapidly and accuracy.