The induction of human immunodeficiency virus（HIV）-specific T-cell response is generally considered as critical to the development of effective immunity to HIV type 1 （ HIV-1 ）. Recombinant Avipoxvirus vectors are...The induction of human immunodeficiency virus（HIV）-specific T-cell response is generally considered as critical to the development of effective immunity to HIV type 1 （ HIV-1 ）. Recombinant Avipoxvirus vectors are used widely for vaccination against HIV-1, where the induction of a cytotoxic CD8 ＋ T-cell（CTL） response seems to be an important component of protective immunity. A recombinant fowlpox virus（rFPV/Gag-pol） expressing the Gag-pol protein of HIV was constructed and characterized. The specific expression protein in CEF cells infected by recombinant fowlpox and the specific antibody in the sera of mice immunized with rFPV were analyzed via Western-blot.展开更多
为检测Asia1口蹄疫（Foot and mouth disease，FMD）重组病毒免疫原性和安全性，将构建表达Asia1型口蹄疫病毒（Foot and mouth disease virus，FMDV）3C基因、P1—2A基因和猪白细胞介素18（Interleukin 18，IL-18）基因的重组鸡痘病毒r...为检测Asia1口蹄疫（Foot and mouth disease，FMD）重组病毒免疫原性和安全性，将构建表达Asia1型口蹄疫病毒（Foot and mouth disease virus，FMDV）3C基因、P1—2A基因和猪白细胞介素18（Interleukin 18，IL-18）基因的重组鸡痘病毒rFPV-P1—2A-3C和rFPV-3C—P1—2A-IL-18间隔2周免疫豚鼠3次，进行特异性抗体、中和抗体、淋巴细胞增殖、淋巴细胞亚类数量、IFN—γ、攻毒保护以及体内分布研究。重组鸡痘病毒可有效刺激豚鼠产生特异性抗体、中和抗体、T淋巴细胞亚类数量、IFN-γ分泌均显著高于对照组；重组鸡疽病毒rFPV-3C-P1—2A—IL-18的T淋巴细胞亚类数量、T淋巴细胞转化和IFN-γ分泌高于重组病毒rFPV-P1—2A-3C免疫组；2个重组病毒的攻毒保护率分别为4／5、3／5。2个重组病毒在接种最早12h可检测到重组病毒的基因，最晚7d可检测到重组病毒的基因。结果表明重组鸡痘病毒rFPV—P1—2A-3C和rFPV-3C-P1—2A—IL-18具有良好的免疫原性，可以有效抵御病毒的攻击，体内残留时间短，对免疫动物安全，为开发、应用新型FMDV疫苗奠定了基础。展开更多
Two recombinant plasmids, pUTA2P1 and pUTAL3CP1, were constructed by inserting structural pro-tein precursor P1-2A and proteinase 3C of foot-and-mouth disease virus (FMDV) into fowl-pox virus (FPV) recombi-nant vector...Two recombinant plasmids, pUTA2P1 and pUTAL3CP1, were constructed by inserting structural pro-tein precursor P1-2A and proteinase 3C of foot-and-mouth disease virus (FMDV) into fowl-pox virus (FPV) recombi-nant vectors pUTA-2 and pUTA-16-LacZ respectively, and two recombinant FPVs (vUTA2P1 and vUTAL3CP1) screened by the RT-PCR, IFA assay and Western blotting assay were obtained successfully. Mice injected respectively with rFPVs were induced high level specific anti-FMDV an-tibodies, increasing of T subtypes, and higher cytotoxicities of splenocytes than those of control groups. These results indicated that a new method was used to construct a poten-tial candidate vaccine of FMDV.展开更多
基金Supported by the National Natural Science Foundation of China(No 30371317)
文摘The induction of human immunodeficiency virus（HIV）-specific T-cell response is generally considered as critical to the development of effective immunity to HIV type 1 （ HIV-1 ）. Recombinant Avipoxvirus vectors are used widely for vaccination against HIV-1, where the induction of a cytotoxic CD8 ＋ T-cell（CTL） response seems to be an important component of protective immunity. A recombinant fowlpox virus（rFPV/Gag-pol） expressing the Gag-pol protein of HIV was constructed and characterized. The specific expression protein in CEF cells infected by recombinant fowlpox and the specific antibody in the sera of mice immunized with rFPV were analyzed via Western-blot.
文摘为检测Asia1口蹄疫（Foot and mouth disease，FMD）重组病毒免疫原性和安全性，将构建表达Asia1型口蹄疫病毒（Foot and mouth disease virus，FMDV）3C基因、P1—2A基因和猪白细胞介素18（Interleukin 18，IL-18）基因的重组鸡痘病毒rFPV-P1—2A-3C和rFPV-3C—P1—2A-IL-18间隔2周免疫豚鼠3次，进行特异性抗体、中和抗体、淋巴细胞增殖、淋巴细胞亚类数量、IFN—γ、攻毒保护以及体内分布研究。重组鸡痘病毒可有效刺激豚鼠产生特异性抗体、中和抗体、T淋巴细胞亚类数量、IFN-γ分泌均显著高于对照组；重组鸡疽病毒rFPV-3C-P1—2A—IL-18的T淋巴细胞亚类数量、T淋巴细胞转化和IFN-γ分泌高于重组病毒rFPV-P1—2A-3C免疫组；2个重组病毒的攻毒保护率分别为4／5、3／5。2个重组病毒在接种最早12h可检测到重组病毒的基因，最晚7d可检测到重组病毒的基因。结果表明重组鸡痘病毒rFPV—P1—2A-3C和rFPV-3C-P1—2A—IL-18具有良好的免疫原性，可以有效抵御病毒的攻击，体内残留时间短，对免疫动物安全，为开发、应用新型FMDV疫苗奠定了基础。
文摘Two recombinant plasmids, pUTA2P1 and pUTAL3CP1, were constructed by inserting structural pro-tein precursor P1-2A and proteinase 3C of foot-and-mouth disease virus (FMDV) into fowl-pox virus (FPV) recombi-nant vectors pUTA-2 and pUTA-16-LacZ respectively, and two recombinant FPVs (vUTA2P1 and vUTAL3CP1) screened by the RT-PCR, IFA assay and Western blotting assay were obtained successfully. Mice injected respectively with rFPVs were induced high level specific anti-FMDV an-tibodies, increasing of T subtypes, and higher cytotoxicities of splenocytes than those of control groups. These results indicated that a new method was used to construct a poten-tial candidate vaccine of FMDV.
