Construction and Characterization of DNA Vaccine for Major Outer Membrane Protein Gene of Aeromonas hydrophila
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摘要: 为构建嗜水气单胞菌的DNA疫苗载体, 根据已发表的该菌外膜蛋白基因momp的核苷酸序列设计一对特异性引物, 应用PCR技术, 扩增到嗜水气单胞菌L316的主要外膜蛋白基因, 并插入到真核表达载体pcDNA3上, 构建成DNA疫苗, 命名为pcDNA3-POMP。以纯化的原核表达蛋白GST-POMP免疫SD大鼠制备抗血清, 用ELISA测定抗体效价达到1∶100 000以上;用pcDNA3-POMP质粒转染293细胞, 转染48h后收集细胞, 提取细胞的RNA进行RT-PCR, 检测到外源基因的表达。至此, 初步完成嗜水气单胞菌DNA疫苗表达载体的构建, 为进一步疫苗免疫和效价的检测奠定基础。Abstract: For constructing the DNA vaccine, apair of specific PCR primers were designed according to the nucleotide sequence of Aeromonas hydrophila major outer membrane protein gene published by our lab previously. The PCR products were inserted into the eukaryotic expression vector pcDNA3 to construct a DNA vaccine named pcDNA3-POMP.SD rats were immunized with purified prokaryotic-expressed protein GST-POMP to make antiserum, whose antibody titer, measured by ELISA, was over 1∶100 000.293cells were transfected with pcDNA3-POMP, 48hours after transfection, the cells were collected for total RNA extraction and RT-PCR, and the expression of exogenous momp were detected.Therefore, we have constructed a plasmid of DNA vaccine for Aeromonas hydrophila, vaccination and evaluation of this DNA vaccine will be studied in the future.
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Key words:
- Aeromonas hydrophila /
- DNA vaccine /
- outer membrane protein
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