基于T7 RNA聚合酶的传染性法氏囊病病毒反向遗传系统的建立  

Establishment of infectious bursal disease virus(IBDV) reverse genetics system using T7 RNA polymerase.

作　　者：魏永伟[1] 章晓栋[1] 侯贤宏[1] 徐弘[1] 于涟[1] 

机构地区：[1]浙江大学动物科学学院浙江省动物预防医学重点实验室,浙江杭州310029

出　　处：《浙江大学学报（农业与生命科学版）》2008年第6期602-607,共6页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：国家科技计划资助项目(2004BA757C);浙江省科技计划重点资助项目(2003C22002)

摘　　要：为了建立传染性法氏囊病病毒反向遗传系统,应用PCR法在鸡传染性法氏囊病病毒基因组A、B两节段的5末端和3末端分别引入T7启动子和核酶HDV序列,然后分别将含有T7启动子和核酶HDV序列的A、B节段构建到载体PT-Pluc当中,构建感染性载体PT-mA和PT-mB.在脂质体介导下将PT-mA和PT-mB共转染经痘病毒vTF7-3(含T7 RNA聚合酶基因,能稳定表达T7 RNA聚合酶)预先感染1 h的vero细胞.细胞病变观测、间接免疫荧光试验、电镜观察和分子标记检测证实成功实现了鸡传染性法氏囊病病毒的遗传拯救.In order to establish the reverse genetics of IBDV, the sequences of T7 promoter and ribozyme HDV were introduced into the 5＇ and 3＇ terminals of segments A and B of IBDV genome using PCR. Then the segments, which containing promoter and ribozyme HDV sequences, were cloned into PT-Plue vector and named as PTmA and PTmB, respectively. Both PT-mA and PT-mB were co-transfected into veto ceils which were infected by recombinant vaccinia virus vTFT-3 （vTFT-3 can express the T7 RNA polymerase in vero cell） for 1 hour. The surveying of cytopathic effect（CPE）, indirect immunofluorescence test and molecular marker detection confirmed the succeeding of the rescuing of IBDV.

关 键 词：IBDV 反向遗传 T7 RNA聚合酶 

分 类 号：S858.31[农业科学—临床兽医学] Q78[农业科学—兽医学]