摘要
目的:探索制备免疫不育疫苗的新途径,获得草原兔尾鼠卵透明带3(LZP3)重组腺病毒减毒活疫苗。方法:将LZP3基因亚克隆到穿梭质粒pShuttle-CMV上,采用细菌内同源重组"两步转化法"构建携带LZP3基因的重组腺病毒载体。获得的重组腺病毒载体线性化后转染HEK293细胞,包装成病毒颗粒。PCR鉴定重组腺病毒,继而用鉴定正确的重组腺病毒感染HeLa细胞,并以RT-PCR、Western blot检测LZP3的转录和表达。结果:成功构建了携带LZP3基因的重组腺病毒pAd-LZP3载体,其转染293细胞后包装出重组病毒,PCR证实LZP3基因已整合至腺病毒基因组中,病毒的滴度可达1.2×1010pfu/L。RT-PCR和Western blot检测表明RAd-LZP3感染的HeLa细胞中LZP3基因能够有效转录和表达。结论:制备的RAd-LZP3可成功表达LZP3基因,为后续开展RAd-LZP3免疫动物的研究奠定了基础。
AIM： To explore a new immunocontraceptive vaccine and construct an attenuated recombinant adenoviral vaccine against Lagurus lagurus zona pellucida 3 （LZP3）. METHODS： LZP3 gene was subcloned into the shuttle vector pShuttle-CMV, and then a two-step transformation procedure was employed to construct a recombinant adenoviral plasmid with LZP3, which was digested with Pac I and transfected into HEK293 cells to package recombinant adenovirus particles. Finally, HeLa cells were infected by the recombinant adenovirus. LZP3 gene was detected from the recombinant virus by PCR, and its transcription and expression were analyzed by RT-PCR and Western blot. RESULTS： Recombinant adenovirus vector pAd-LZP3 with LZP3 gene was constructed by homologous recombination in E. coli, and a recombinant adenovirus was obtained by transfecting HEK293 cells with pAd-LZP3. PCR test indicated that LZP3 gene was successfully integrated into the adenoviral genome, and the titer of the recombinant adenovirus reached 1. 2 × 10^10 pfu/L. The transcription and expression of LZP3 gene in the infected HeLa cells were confirmed by RT-PCR and Western blot. CONCLUSION： The recombinant adenovirus RAd-LZP3 can be successfully expressed in the infected HeLa cells, which lays the foundation for further researches into immunizing animals with RAd-LZP3.
出处
《细胞与分子免疫学杂志》
CAS
CSCD
北大核心
2007年第8期707-710,共4页
Chinese Journal of Cellular and Molecular Immunology
基金
国家自然科学基金资助项目(30360062)
教育部"春晖计划"项目(z2005-1-65008)
新疆教育厅创新群体资助项目(XJEDU2004G02)
