畜牧兽医学报 ›› 2015, Vol. 46 ›› Issue (4): 672-680.doi: 10.11843/j.issn.0366-6964.2015.04.023

• 研究简报 • 上一篇    

东北白鹅CD8α基因的克隆及其胞外区基因的表达与抗血清的制备

张雪莲1#,魏双施1#,刘晓玫1,邵建伟1,张树栋1,李珊珊2,高明春1,张文龙1,邢育钢3,马波1*,王君伟1*   

  1. (1.东北农业大学动物医学学院,哈尔滨 150030;2.黑龙江中医药大学附属第二医院,哈尔滨 150001;3.哈药集团生物疫苗有限公司,哈尔滨 150069)
  • 收稿日期:2014-08-25 出版日期:2015-04-23 发布日期:2015-04-23
  • 通讯作者: 王君伟,教授,主要从事动物疫病防制研究,E-mail:jwwang@neau.edu.cn;马波,副教授,主要从事禽类疫病及其免疫防制研究,E-mail:mabo99@neau.edu.cn
  • 作者简介:张雪莲(1988-),女,黑龙江延寿人,硕士,主要从事禽类基础免疫的研究,E-mail:zxlsjw0312@163.com;魏双施(1983-),男,黑龙江齐齐哈尔人,博士,主要从事禽类基础免疫的研究,E-mail:jackie83210@163.com。张雪莲与魏双施同为第一作者
  • 基金资助:

    黑龙江省教育厅科学技术面上项目(12541042);黑龙江省青年基金(QC04C32)

Molecular Cloning of Northeast White Goose CD8α Gene,Expression of Its Extracellular Region and Preparation of Corresponding Antiserum

ZHANG Xue-lian1# ,WEI Shuang-shi1# ,LIU Xiao-mei1,SHAO Jian-wei1,ZHANG Shu-dong1,LI Shan-shan2,GAO Ming-chun1,ZHANG Wen-long1,XING Yu-gang3,MA Bo1* ,WANG Jun-wei1*   

  1. (1.College of Veterinary Medicine,Northeast Agricultural University,Harbin 150030,China;2.The Second Affiliated Hospital of Heilongjiang University of Chinese Medicine,Harbin 150001,China;3.Harbin Pharmaceutical Group Bio-vaccine Co.Ltd.,Harbin 150069,China)
  • Received:2014-08-25 Online:2015-04-23 Published:2015-04-23

摘要:

根据GenBank公布的绿头鸭CD8α(AF378373)基因序列设计引物,通过RT-PCR获得东北白鹅CD8α基因。根据测序结果设计特异性引物,克隆得到东北白鹅CD8α胞外区基因,并在pET-30a(+)及pET-28a(+)/Rosetta(DE3) pLysS系统中进行原核表达。经IPTG诱导重组蛋白质获得表达,Ni-NTA柱亲和层析获得纯化的重组蛋白质,以纯化的重组蛋白质(pET-30a-CD8ex)为免疫原制备兔抗鹅CD8α胞外区抗血清。I-ELISA、Western blot分析表明抗血清可特异识别分离获得的东北白鹅外周血T淋巴细胞与重组蛋白质(pET-28a-CD8ex),间接免疫荧光试验证实,纯化的抗血清可特异性识别瞬时真核表达的鹅CD8α胞外区蛋白质。利用激光共聚焦显微镜观察到分离获得的鹅外周血淋巴细胞的细胞膜处出现明显的荧光信号。本研究结果说明制备的抗血清可作为鹅CD8+T淋巴细胞的检测试剂。

Abstract:

The aim of this study was to prepare antiserum against the goose CD8α protein.Specific primers for goose CD8α gene were designed according to public Mallard duck reference sequence (AF378373) in GenBank.Then Northeast White Goose CD8α gene was cloned by RT-PCR successfully.According to goose CD8α ORF sequence,specific primers were further designed and goose CD8α extracellular region was cloned.The recombinant goose CD8α extracellular region protein was expressed in prokaryotic expression system,pET-30a(+) and pET-28a(+) /Rosetta(DE3)pLysS.The recombinant protein was induced by IPTG and was purified by Ni-NTA column affinity chromatography.As immunogen,the purified recombinant protein stimulated the rabbit to produced anti-goose CD8α extracellular region serum.I-ELISA,Western blot analysis showed that antiserum could identify recombinant goose CD8α extracellular region protein and peripheral blood T lymphocytes respectively.Indirect immunofluorescence test confirmed that the purified antiserum could identify goose CD8α extracellular protein expressed by eukaryotic expression system specifically.The laser confocal scanning microscope had observed the fluorescence signal on the cell membrane.The above results show that antiserum can be used as detection reagent to detect the goose CD8+ T lymphocytes.

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