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貂源绿脓杆菌山东分离株exoA-fliC基因的原核表达及其免疫原性研究
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作者 秦晓冰 马凤芹 单虎 《中国兽医杂志》 CAS 北大核心 2018年第8期50-53,共4页
采用重叠PCR方法扩增水貂绿脓杆菌山东分离株(PASD01株)的exoA与fli C基因,并将两段基因嵌合后,克隆到表达载体p ET-30a上,转化到宿主菌BL21(DE3)中诱导表达,并对表达产物进行免疫原性分析。结果表明,重组嵌合蛋白在37℃,0. 8 mmol/L I... 采用重叠PCR方法扩增水貂绿脓杆菌山东分离株(PASD01株)的exoA与fli C基因,并将两段基因嵌合后,克隆到表达载体p ET-30a上,转化到宿主菌BL21(DE3)中诱导表达,并对表达产物进行免疫原性分析。结果表明,重组嵌合蛋白在37℃,0. 8 mmol/L IPTG诱导7 h时表达量最高;经SDS-PAGE和Western Blot分析,该蛋白在约68 k D处出现特异性条带,与预期结果一致;该重组嵌合蛋白免疫小鼠后,最高血清效价可达1∶640 000。结论:水貂绿脓杆菌exoA-fli C嵌合蛋白具有良好的免疫原性,为其进一步发展成为新型亚单位疫苗来抵抗水貂出血性肺炎奠定基础。 展开更多
关键词 水貂绿脓杆菌 exoA-fliC嵌合基因 原核表达 免疫原性
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Diagnosis and Treatment of Hemorrhagic Pneumonia of Mink 被引量:4
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作者 张贵贤 项方 +1 位作者 王殿永 李国华 《Agricultural Science & Technology》 CAS 2012年第12期2560-2561,2666,共3页
[Objective] The paper was to diagnose and treat hemorrhagic pneumonia of mink. [Method] The diseased minks bred by one raiser in Huangtian Village of Changli County in Qinhuangdao City were used as experimental materi... [Objective] The paper was to diagnose and treat hemorrhagic pneumonia of mink. [Method] The diseased minks bred by one raiser in Huangtian Village of Changli County in Qinhuangdao City were used as experimental materials. It was necropsied, and its tissues such as liver, kidney, spleen and lung were taken under aseptic condition, then inoculated into general nutrition agar and blood agar. The bacteria were isolated and purified, and the strains obtained were carried out animal inoculation test and drug sensitivity test. Finally, the relevant treatment and preven- tive measures were put forward. [Conclusion] The bacteria isolated were detected to be negative by Gram staining; it formed hemolysis ring in blood agar; the bacteria could ferment glucose and xylose, which could not ferment sucrose, lactose, maltose and esculin; it was positive in catalase and oxidase test, and negative in urease test and hydrogen sulfide test; so the strain was indentified to be Pseudomonas aerugi- nosa. Drug sensitivity test showed that the bacteria were highly sensitive to ciprofloxacin, which had tolerance to cefoxitin. [Conclusion] The study laid foundation for diagnosis and treatment of hemorrhagic pneumonia of mink. 展开更多
关键词 MINK Pseudomonas aeruginosa Drug sensitivity test
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