Objective To investigate the protein expression profiles of the major food‐borne pathogen Campylobacter jejuni NCTC11168.Methods Membrane and soluble cellular proteins were extracted from the genome‐sequenced C.jejuni strain NCTC11168.Protein expression profiles were determined using two‐dimensional gel electrophoresis(2‐DE).All the detected spots on the 2‐DE map were subjected to matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry(MALDI‐TOF/TOF) analysis.Results A total of 537 and 333 spots were detected from the whole cell and membrane‐associated proteins of C.jejuni NCTC11168 cultured on Columbia agar medium at 42 ℃ by 2‐DE and Coomassie Brilliant Blue staining,respectively.Analyses of whole cell and membrane‐associated proteins included 399 and 133 spots,respectively,which included 182 and 53 functional proteins identified by MALDI‐TOF/TOF analysis.Conclusion The comprehensive expression protein profiles of C.jeuni NCTC11168 obtained in this study will be useful for elucidating the roles of these proteins in further pathogenesis investigation.
ZHANG Mao JunGU Yi XinDI XiaoZHAO FeiYOU Yuan HaiMENG Fan LiangZHANG Jian Zhong
目的建立结肠弯曲菌实时PCR检测方法并评价该方法的可行性。方法BLAST与Vector NTI Suite 6.0筛选出结肠弯曲菌的特异基因ceuE作为检测靶基因,Primer 5.0和Oligo6.0设计引物和探针,优化实时PCR反应体系并评价其最低检测限、特异性、可重复性。结果与结论在结肠弯曲菌的ceuE特异基因上设计引物和探针,经优化了的实时PCR反应体系最低检测限为5.62CFU,特异度为100%,变异系数为0.15%～1.30%,本研究为结肠弯曲菌的快速检测提供了一种参考方法。
