畜牧兽医学报 ›› 2016, Vol. 47 ›› Issue (6): 1198-1208.doi: 10.11843/j.issn.0366-6964.2016.06.015

• 预防兽医 • 上一篇    下一篇

应用多重GeXP-PCR同时检测6种鸡免疫抑制病病毒的研究

曾婷婷,谢芝勋*,谢丽基,邓显文,谢志勤,罗思思,黄莉,黄娇玲   

  1. (广西壮族自治区兽医研究所广西畜禽疫苗新技术重点试验室,南宁 530001)
  • 收稿日期:2015-09-29 出版日期:2016-06-23 发布日期:2016-06-23
  • 通讯作者: 谢芝勋,研究员,广西特聘专家,E-mail:xiezhixun@126.com
  • 作者简介:曾婷婷(1986-),广西合浦人,硕士,助理研究员,主要从事禽病原分子生物学研究,E-mail:tingtingzeng1986@163.com
  • 基金资助:

    国家自然科学基金(31160512);广西自然科学基金(2014GXNSFCA118006);广西特聘专家专项基金 (2011B020);广西水产畜牧兽医局科技项目(桂渔牧科201452003;201528013)

Simultaneous Detecting Six Immunosuppressive Chicken Viruses by a GeXP Analyser-based Multiplex PCR Assay

ZENG Ting-ting,XIE Zhi-xun*,XIE Li-ji,DENG Xian-wen,XIE Zhi-qin,LUO Si-si,HUANG Li,HUANG Jiao-ling   

  1. (Guangxi Key Laboratory of Animal Vaccines and Diagnostics,Guangxi Veterinary Research Institute,Nanning 530001,China)
  • Received:2015-09-29 Online:2016-06-23 Published:2016-06-23

摘要:

 拟建立一种基于GeXP多基因表达分析系统的多重PCR方法,同时检测6种鸡免疫抑制病病毒——鸡马立克病毒、禽白血病病毒(包括A、B和J亚群)、禽网状内皮组织增生症病毒、禽呼肠孤病毒、鸡传染性贫血病毒和传染性法氏囊炎病毒。多重PCR反应使用嵌合引物和通用引物组合的反应体系,经过GeXP多基因表达分析系统进行毛细管电泳,鉴别PCR产物片段;通过调整嵌合引物浓度、Mg2+浓度、Taq酶浓度优化反应体系及调整退火温度和时间优化反应条件。应用建立的多重GeXP-PCR,分别单独和同时检测6种鸡免疫抑制病病毒的8个目的基因,同时以其他常见禽类病毒和鸡组织器官核酸为对照,验证其特异性;检测8个目的基因不同浓度的克隆质粒,验证其敏感性;应用建立的多重PCR检测300份临床样品,并同时用荧光定量PCR和测序验证其检测结果的准确性。结果表明建立的多重GeXP-PCR方法能够分别扩增出6种病毒,8个特异性目的片段,不能扩增其他常见禽类病毒和鸡组织器官的基因;在低至100 copies•20 μL-1的水平能同时特异性地检测出6种鸡免疫抑制病病毒核酸;检测300份临床病死鸡样品,190份样品显示为阳性,PCR和测序结果与多重GeXP-PCR结果相符。本研究建立的多重GeXP-PCR方法可特异、敏感、高通量地检测6种鸡免疫抑制性病毒,可用于临床鉴别诊断和分子流行病学调查,具有很高的临床应用价值。

Abstract:

The objective of this research was to develop a novel,high-throughput Genome Lab Gene Expression Profiler Analyser-based multiplex PCR method (GeXP-multiplex PCR) for simultaneous detection of 6 immunosuppressive chicken viruses.Using chimeric primers,6 immunosuppressive chicken viruses,including Marek’s disease virus (MDV),three subgroups of avian leucosis virus (ALV-A/B/J),reticuloendotheliosis virus (REV),infectious bursal disease virus (IBDV),chicken infectious anaemia virus (CIAV) and avian reovirus (ARV) were amplified and identified by their respective amplicon sizes.The concentration of the chimeric primers,Mg 2+ and Taq,and annealing temperature,and time were optimised according to the amplification efficiency of the GeXP-multiplex PCR assay.The assay specificity for each immunosuppressive viral target was individually and simultaneously tested with a mixture of 8 sets of chimeric primers in a multiplex PCR assay.Plasmid DNA and transcribed ssRNA were diluted to a final concentration ranging from 105 copies•20 μL-1 to 1 copy•20 μL-1 and then subjected to the GeXP-multiplex PCR assay with 8 sets of chimeric primers,both individually and in pre-mixed solutions.A total of 300 clinic specimens of disease chicken were detected by using GeXP-multiplex PCR.The results were confirmed using independent real-time PCR and sequencing to determine true positives.The specificity and sensitivity of the optimised GeXP-multiplex PCR assay were evaluated,and the data demonstrated that this technique could selectively amplify these 6 viruses at a sensitivity of 100 copies•20 μL-1 when all 6 viruses were present.Of the 300 examined clinical specimens,190 were positive for immunosuppressive viruses according to the GeXP-multiplex PCR assay.The GeXP-multiplex PCR assay is a high-throughput,sensitive and specific method for the detection of 6 immunosuppressive viruses that can be used for differential diagnosis and molecular epidemiologic surveys.

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