National Tsing Hua University Institutional Repository:Characterization of Helicobacter pylori Neutrophil-activating Protein Expressed in Escherichia coli
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    National Tsing Hua University Institutional Repository > 生命科學院  > 生命科學系 > 會議論文  >  Characterization of Helicobacter pylori Neutrophil-activating Protein Expressed in Escherichia coli


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    题名: Characterization of Helicobacter pylori Neutrophil-activating Protein Expressed in Escherichia coli
    作者: Liu, Y-C.;Fu, H-W
    教師: 傅化文
    日期: 2006
    出版者: 中華民國毒物學學會;台灣生物化學及分子生物學學會;中華民國細胞及分子生物學學會;中華民國臨床生化學會;中國生理學會;台灣藥理學會;中華民國解剖學學會
    關聯: The Twenty-First Joint Annual Conference of Biomedical Sciences, Taipei, Taiwan, MAR 2006
    摘要: Helicobacter pylori neutrophil-activating protein (HP-NAP) is an important virulence factor of Helicobacter pylori (H. pylori) for pathogenesis. To investigate how HP-NAP activates human neutrophils, HP-NAP was expressed in Escherichia coli (E. coli) and purified by the two sequential gel filtration chromatographies. The molecular weight of HP-NAP monomer was confirmed by liquid chromatography/mass spectrometry (LC/MS). HP-NAP was used to stimulate human neutrophils for characterization of the purified recombinant HP-NAP. HP-NAP-stimulated neutrophils increased the production of reactive oxygen species (ROS) which was measured by using nitro blue tetrazolium chloride (NBT) dye reduction assay and luminol-dependent chemiluminescence assay. Interestingly, recombinant HP-NAP promoted the secretion of myeloperoxidase (MPO) in human neutrophils, which was a novel finding for the function of HP-NAP. These results indicate that recombinant HP-NAP may have ability to activate human neutrophils. Furthermore, recombinant HP-NAP in this expression system can be used to investigate the role of HP-NAP in H. pylori infection and to develop the vaccine against H. pylori.
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/81434
    显示于类别:[分子與細胞生物研究所] 會議論文
    [生命科學系] 會議論文

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