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Recombinant baculovirus expression of HA2 gene of avian influenza virus H9N2 subtype
Author(s): WANG Bin, TANG Zhifen, QI Yan, SUN Lingshuang, WANG Junwei(collegeofveterinarymedicine, NORTHEAST Agriculturaluniversity, HARBIN 150030, china)
Pages: 362-
365
Year: 2006
Issue:
5
Journal: Chinese Journal of Veterinary Science and Technolo
Keyword: 禽流感病毒; H9N2亚型; HA2基因; 重组杆状病毒; 抗原性;
Abstract: 从pMD18-T-HA阳性质粒扩增了H9N2亚型禽流感病毒的HA2基因,将扩增到的 HA2基因克隆至昆虫杆状病毒转移载体pBlueBacHis2A中。将其与杆状病毒共转染于Sf9昆虫细胞,经蚀斑筛选纯化重组杆状病毒,用其感染Sf9昆虫细胞,并优化表达条件。SDS-PAGE和 Western-blotting分析表明,表达产物的分子质量约为27 ku。Dot-ELISA分析表明,表达的HA2 融合蛋白可与鸡抗H9N2亚型血清发生特异性反应,而与H5和H7亚型抗血清间无交叉反应。
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