[1]尹曼曼,楼觉人*.利用毕赤酵母表达系统表达兔出血症病毒样颗粒及其免疫原性研究[J].中国预防兽医学报,2019,(03):300-304.[doi:0.3969/j.issn.1008-0589.201805017]
 YIN Man-man,LOU Jue-ren*.The express of rabbit hemorrhagic disease virus-like particles inPichia pastoris and its immunogenicity study[J].Chinese journal of preventive veterinary medicine,2019,(03):300-304.[doi:0.3969/j.issn.1008-0589.201805017]
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利用毕赤酵母表达系统表达兔出血症病毒样颗粒及其免疫原性研究()
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《中国预防兽医学报》[ISSN:1008-0589/CN:23-1417/S]

卷:
期数:
2019年03
页码:
300-304
栏目:
免疫学
出版日期:
2019-04-25

文章信息/Info

Title:
The express of rabbit hemorrhagic disease virus-like particles in
Pichia pastoris and its immunogenicity study
文章编号:
1008-0589(2019)03-0300-05
作者:
 

尹曼曼楼觉人*

 (上海海利生物技术股份有限公司/上海市兽用生物制品工程技术中心,上海 奉贤 201403)
Author(s):
 

YIN Man-man LOU Jue-ren*

 (Shanghai HILE Bio-Technique Co., Shanghai Research Center of Veterinary Biological Engineering and Technology, Shanghai 201403, China)
关键词:
兔病毒性出血症病毒毕赤酵母VP60蛋白病毒样颗粒
Keywords:
rabbit hemorrhagic disease virus  Pichia pastoris  VP60  virus-like particles
分类号:
S852.65
DOI:
0.3969/j.issn.1008-0589.201805017
文献标志码:
A
摘要:
为研究毕赤酵母表达的兔病毒性出血症病毒(RHDV)病毒样颗粒(VLP)的免疫保护性,本研究将RHDV VP60的基因克隆到pPIC3.5K载体中,并导入毕赤酵母KM71菌株中,重组菌株经发酵和甲醇诱导,通过western blot检测目的蛋白的表达;透射电镜观察表达产物是否组装形成VLP;并通过动物试验评估VLP的免疫原性和攻毒保护效果。Western blot结果显示VP60蛋白能够在酵母内表达,电镜下观察到表达的VP60能够自发装配成大小均一的颗粒,与天然RHDV大小相当,约为30 nm~40 nm,表明表达的VP60可以自发组装成VLP。动物实验结果表明:表达的VLP与佐剂MONTANIDE GEL 01 PR混合后免疫实验兔,能够刺激实验兔产生保护性抗体,免疫后21 d攻毒,对实验兔的保护率达100 %,且保护性抗体至少可以持续6个月。本研究利用毕赤酵母表达了RHDV的VLP,为研制RHDV亚单位疫苗奠定了基础。
  
Abstract:

  Abstract: To study the immunoprotecive effect of rabbit hemorrhagic disease virus (RHDV) virus-like particles (VLPs) expressed by the yeast of Pichia pastoris, the gene of RHDV VP60 was cloned into the pPIC3.5k vector, then the resulting recombinant plasmid was transformed into P.pastoris KM71 strain to construct the recombinant yeasts. After fermentation and methanol induction of the recombinant yeasts, the expression of target protein was detected by western blot, and the VLPs was identfied by observation under transmission electron microscopy (TEM), then the immunogenicity and protection effect of the expressed VLPs were evaluated by animal experiments. Western blot detection showed that the VP60 proteins were efficiently expressed in yeast cells which was able to spontaneously assemble into 30 nm to 40 nm VLPs observed with TEM. Animal experiments showed that the expressed VLPs were capable to effectively stimulate the rabbits to produce protective antibody after emulsifying with MONTANIDE GEL 01 PR adjuvant, which lasted at least six months. Moveover, the immune protection rate of the VLPs for the immunized rabbits against RHDV challenge was 100% on the twenty-first day post the vaccination. This study provided a new way to development of RHDV subunit vaccine.

参考文献/References:

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(本文编辑:李 娜)

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更新日期/Last Update: 2019-04-26