摘要:传染性法氏囊病(Infectious Bursal Disease, IBD)是由传染性法氏囊病病毒引起的雏鸡急性、高度接触性疾病。本研究利用火鸡疱疹病毒(Herpesvirus of turkey, HVT)FC - 126疫苗株基因组UL45/46同源序列、鼠巨细胞病毒(Mouce Cytomegalovirus, MCMV)启动子、C3d和大肠杆菌黄嘌吟-鸟嘌吟磷酸转移酶基因序列(gpt)基因,构建含有VP2基因的转移载体质粒pUL45/46-gpt-VP2-C3d。再将该HVT转移载体与HVT DNA以磷酸钙沉淀法共转染鸡胚成纤文细胞(CEF),4d后出现典型病毒蚀斑,利用霉酚酸(MPA)阻断其核酸代谢途径,经过6轮筛选获得重组病毒rHVT -VP2-C3d。间接免疫荧光试验(IFA)检测,重组病毒具有特异性荧光;夹心ELISA检测,重组病毒呈阳性反应。PCR鉴定了30代重组病毒,其能稳定表达目的基因。结果表明,IBD重组火鸡疱疹病毒构建成功,为研制预防传染性法氏囊病和马立克氏病(MD)的二联基因工程疫苗打下基础。28399
毕业论文关键词:传染性法氏囊病;VP2基因;C3d;重组火鸡疱疹病毒
Construction of recombinant Turkey Herpesvirus expressing the VP2 protein of infectious bursal disease virus strain displaying C3d
Abstract: Infectious bursal disease (IBD), which usually occurs in 3~6 – week - old chicken, is an acute and highly contagious disease caused by infectious bursal disease virus (IBDV). In our research, the transfer vector pUL45/46-gpt-VP2-C3d which contained UL45/46 region of turkey(HVT)genome, mouce cytomegalovirus promoter, C3d, selection marker Eco - gpt (Xanthine - guanine phosphoribosyl transferase (gpt),and IBDV VP2 gene was constructed. And then, transfer vector and total DNA of HVT infected cells were cotransfected into chicken embryo fibroblasts (CEF). A typical virus plaque was observed after 4 days. After six rounds of selection in medium containing mycophenolic acid, xanthine and hypoxanthine, recombinant virus rHVT-VP2-C3d was obtained and identified. Result showed that recombinant virus had specific fluorescence by indirect immunofluorescence assay(IFA), and IBDV antibody was tested by sandwich ELISA, and the recombinant virus was positive. Recombinant IBD turkey herpesvirus is proved successful.Key words: infectious bursal disease; VP2 gene; C3d; recombinant rHVT
目 录
摘要: 1
关键词: 1
引言 1
1.材料与方法 2
1.1材料 2
1.1.1 主要试剂 2
1.1.2 SPF鸡胚和病毒 3
1.1.3 主要仪器设备 3
1.2重组火鸡疱疹病毒转移载体的构建 3
1.2.1 重组火鸡疱疹病毒UL45和UL46同源臂的克隆 3
1.2.2 筛选基因表达盒的构建 5
1.2.3 VP2-C3d串联基因表达盒的构建 6
1.2.4火鸡疱疹病毒重组病毒转移载体pUL45/46-gpt-VP2-C3d的构建 8
1.3重组火鸡疱疹病毒的获得 10
1.3.1原代鸡胚成纤文细胞(CEF)的制备 10
1.3.2 HVT DNA的提取 10
1.3.3重组火鸡疱疹病毒(rHVT-VP2-C3d)的包装 10
1.3.4重组火鸡疱疹病毒(rHVT-VP2-C3d)的筛选 10
1.3.5 夹心ELISA检测重组VP2-C3d串联蛋白的表达 10
1.3.6 间接免疫荧光试验(IFA)检测重组VP2-C3d串联蛋白的表达 11
1.3.7重组病毒rHVT-VP2-C3d的遗传稳定性的检测 11
1.3.8重组病毒与野生病毒在CEF上的生长曲线比较 11
2.结果与分析 12
2.1重组火鸡疱疹病毒转移载的构建 12
2.2重组火鸡疱疹病毒病毒的获得 13
- 上一篇:种禽场及南京周边地区流感病毒的分离鉴定
- 下一篇:常山酮酰化产物的LD50的测定
-
-
-
-
-
-
-
现代简约美式风格在室内家装中的运用
浅析中国古代宗法制度
上市公司股权结构对经营绩效的影响研究
C++最短路径算法研究和程序设计
高警觉工作人群的元情绪...
g-C3N4光催化剂的制备和光催化性能研究
中国传统元素在游戏角色...
江苏省某高中学生体质现状的调查研究
NFC协议物理层的软件实现+文献综述
巴金《激流三部曲》高觉新的悲剧命运