生物技术通报 ›› 2016, Vol. 32 ›› Issue (3): 148-154.doi: 10.13560/j.cnki.biotech.bull.1985.2016.03.024

• 研究报告 • 上一篇    下一篇

携带人卵泡刺激素受体的慢病毒载体疫苗的构建及其免疫效应检测

马晓玲,刘红春,李江伟   

  1. 新疆大学生命科学与技术学院 新疆生物资源基因工程重点实验室, 乌鲁木齐 830046
  • 收稿日期:2015-09-03 出版日期:2016-03-24 发布日期:2016-03-25
  • 作者简介:马晓玲, 女, 硕士研究生, 研究方向:肿瘤免疫诊断和治疗的分子基础研究;E-mail:1239598355@qq.com
  • 基金资助:
    国家自然科学基金项目(81260333), 新疆自治区高技术研究发展项目(201110102)

Development of a Lentivirus Vector-based Vaccine Carrying Follicle-stimulating Hormone Receptor and Assay of Its Immunological Effect

MA Xiao-ling, LIU Hong-chun, LI Jiang-wei   

  1. Key Laboratory of Xinjiang Biological Resources and Gene Engineering, College of Life Sciences and Technology, Xinjiang University, Urumqi 830046
  • Received:2015-09-03 Published:2016-03-24 Online:2016-03-25

摘要: 制备携带卵泡刺激素受体的慢病毒载体疫苗, 并研究其对小鼠的免疫效应。将卵泡刺激素受体胞外区(fshr366)基因克隆到慢病毒载体上, 采用脂质体转染法将重组质粒转染至293T细胞中, 包装并产生含有目的基因的病毒颗粒;分别利用RT-PCR和Western blot检测感染病毒颗粒的293T细胞中fshr366 在mRNA水平及蛋白水平的表达情况;用携带fshr366的病毒颗粒单次腹腔免疫BALB/c小鼠, 分别在免疫0、14、21和28 d对小鼠眼眶采血, ELISA法检测免疫小鼠血清的特异性并测定抗体滴度。酶切和测序结果表明fshr366基因片段成功构建到慢病毒载体上。将包装产生的携带fshr366的慢病毒颗粒感染293T细胞后, RT-PCR和Western blot检测结果表明细胞在转录水平和蛋白水平均表达fshr基因。ELISA结果显示携带fshr366的慢病毒颗粒单次腹腔免疫小鼠后, 免疫14 d就激起了机体的体液免疫反应, 抗体滴度达到1:1 600。成功制备了携带卵泡刺激素受体的慢病毒载体疫苗, 其可以在小鼠体内激发FSHR抗原特异的早期持续性免疫反应。

关键词: 卵泡刺激素受体, 慢病毒载体, 疫苗, 体液免疫反应

Abstract: This work aims to prepare lentivirus vaccine with a follicle-stimulating hormone receptor(FSHR)and investigate the immunological effect of it on mice. The gene(fshr366)of extracellular region of FSHR was cloned into lentivirus vector. The recombinant plasmids were transfected into the 239T cells by the method of lipidosome transfection, and the virus particles(Lenti-FSHR366)with target gene were produced after encapsulation. The expressions of fshr366 mRNA and FSHR366 protein in 293T cells infected by Lenti-FSHR366 were detected by RT-PCR and Western blot. For evaluating the immunological effects, BALB/c mice were intraperitoneally inoculated with single immunization of fshr366-carring virus, collecting the blood samples from the orbits of mice at day 0, 14, 21 and 28 after immunization, then ELISA method was used to detect the specificity of the sera from immunized mice and determine the titer of the antibody. The RE digestion and DNA sequencing results showed the gene fragment of fshr366 was successfully cloned into lentivirus vector. After transfection to 293T cells with the encapsulated lentivirus particles carrying fshr366, the detection results by RT-PCR and Western blot indicated the expression of gene fshr in the cells at transcription and protein level. The results of ELISA revealed that the humoral immune response in mice rose on day 14 after single immunization through intraperitoneally injection of lentivirus particles carrying fshr366, the titer of antibody was 1:1600.

Key words: follicle-stimulating hormone receptor, lentivirus vector, vaccine, humoral response