[ Objective] The study was to clone HN and F genes from GX1 strain of goose paramyxovirus and analyze their sequences. [ Method] According to the full nucleotide sequence of GPV-SF02 strain of goose paramyxovirus, two...[ Objective] The study was to clone HN and F genes from GX1 strain of goose paramyxovirus and analyze their sequences. [ Method] According to the full nucleotide sequence of GPV-SF02 strain of goose paramyxovirus, two pairs of pdmers were designed to amplify the HN and F genes from GX1 strain of goose paramyxovirus isolated from diseased goose in Guangxi Zhuang Autonomous Region; the amplified products were ligated into pMD18-T vector and sequenced. [ Result ] HN and F genes of this strain tested were 1 716 and 1 662 bp in full nucleotide length, respectively; both showed the homologues of about 97.3% with GPV- SF02 strain, of 80.3% -97.5% with strains LaSota, F48E9 and JS, of just 84.8% with Miyadera strain. [ Conclusion] The results show that isolated strain BX1 matches to virulent APMV-1 strain, belonging to genotype Ⅶ of APMV-1 strain.展开更多
基金Supported by the Development Program for Guangxi Science andTechnology(0719004-3G)~~
文摘[ Objective] The study was to clone HN and F genes from GX1 strain of goose paramyxovirus and analyze their sequences. [ Method] According to the full nucleotide sequence of GPV-SF02 strain of goose paramyxovirus, two pairs of pdmers were designed to amplify the HN and F genes from GX1 strain of goose paramyxovirus isolated from diseased goose in Guangxi Zhuang Autonomous Region; the amplified products were ligated into pMD18-T vector and sequenced. [ Result ] HN and F genes of this strain tested were 1 716 and 1 662 bp in full nucleotide length, respectively; both showed the homologues of about 97.3% with GPV- SF02 strain, of 80.3% -97.5% with strains LaSota, F48E9 and JS, of just 84.8% with Miyadera strain. [ Conclusion] The results show that isolated strain BX1 matches to virulent APMV-1 strain, belonging to genotype Ⅶ of APMV-1 strain.
文摘目的在杆状病毒中表达牛副流感病毒3型(bovine parainfluenza virus type-3,BPIV-3)血凝素-神经氨酸酶蛋白(hemagglutinin-neuraminidase,HN)。方法提取BPIV-3 BN-1株RNA,设计特异性引物扩增HN全长ORF,将其克隆至杆状病毒供体载体p Fast Bac HTA中,获得重组供体质粒p Fast Bac-HN。将p Fast Bac-HN转化至感受态细胞E.coli DH10Bac,制备穿梭质粒Bacmid-HN。将纯化的Bacmid-HN经脂质体转染至Sf21昆虫细胞,拯救重组杆状病毒,并进行Western blot鉴定。结果经PCR及测序鉴定证明,HN基因重组供体质粒p Fast Bac-HN及穿梭质粒Bacmid-HN构建正确。利用Sf21昆虫细胞成功拯救重组杆状病毒,连续传代扩增3代的病毒滴度为2×108 CPE/ml。重组HN蛋白的相对分子质量约70 000,可与BPIV-3阳性血清发生特异性反应。结论在杆状病毒表达系统中成功表达了BPIV-3重组HN蛋白,为BPIV-3的诊断及疫苗效力评价奠定了基础。
