欢迎访问《中国兽医科技》网站 -- www.cjvst.com          

     


表达鸡白细胞介素1β基因重组鸡痘病毒的构建

邵卫星, 卢建红, 刘玉良, 韦栋平, 彭大新, 刘秀梵

(扬州大学 农业部畜禽传染病学重点开放实验室, 江苏 扬州225009)

摘要:从伴刀豆球蛋白(ConA)刺激的鸡脾细胞中扩增出鸡白细胞介素1β(ChIL1β)编码区基因,通过与GenBank上登录的ChIL1β序列(Y15006)进行比较。结果显示,在ChIL1β基因编码区的104位、306位、387位和432位的核苷酸发生了变化;相应的氨基酸在35位也发生了变化。虽然306位、387位和432位的核苷酸发生了变化,但没有引起氨基酸变化,说明这一区域的氨基酸具有一定的保守性。从氨基酸的性质上看,35位(Asp→Ala)由酸性氨基酸变为中性氨基酸,这可能是同一种属的不同品种间的正常变化。以鸡痘病毒(FPV)为活载体,构建了表达ChIL1β的重组鸡痘病毒rFPVIL1β。应用XTT/PMS方法检测rFPVIL1β感染的成纤维细胞72h后表达ChIL1β的生物活性,效价为1.0×105U/mL,证明FPV能有效地表达ChIL1β。

关键词: 白细胞介素1β; 鸡痘病毒; 生物活性

中图分类号:S 852.659.1  文献标识码:文章编号:1000-6419(2004)01-0012-05

Construction of recombinant fowlpox virus expressing chicken IL1β gene

SHAO Weixing, LU Jianhong, LIU Yuliang,
WEI Dongping, PENG Daxin, LIU Xiufan

Key Laboratory of Domestic Animal and Poultry Lemology, Ministry of Agriculture/Yangzhou University, Yangzhou 225009, China)


Abstract: The cDNA of the chicken interleukin1β (ChIL1β) was cloned from ConAstimulated chicken spleen cells by RTPCR. Compared with the published ChIL1β sequence in the GenBank(accession No.Y15006), nucleotide changes in the cloned ChIL1β sequence were found at nt 104(A→G),306(C→T),387(G→T)and 432(C→A). And the corresponding change of amino acid was found at amino acid 35 (Asp→Ala) of putative polypeptide. The nucleotide variation at nt 306(C→T),387(G→T)and 432(C→A) did not result in amino acid change. Then a recombinant fowlpox virus(rFPV) expressing ChIL1β was constructed and the biologic activity of the recombinant ChIL1β expressed by rFPV in chicken embryo fibroblasts in vitro using XTT/PMS was determined. The result demonstrated that FPV can express effectively ChIL1β.

Key words: interleukin1β (IL1β); fowlpox virus; biologic activity

《中国兽医科技》 © 版权所有
Chinese Journal of Veterinary Science and Technology(CJVST)

webmaster@cjvst.com