›› 2013, Vol. 40 ›› Issue (9): 90-95.

• 生物技术 • 上一篇    下一篇

鸡白细胞介素1β、白细胞介素18、肿瘤坏死因子α基因荧光定量PCR检测方法的建立

张昆丽1, 谢芝勋2, 滕丽琼2, 刘加波2, 谢丽基2, 庞耀珊2, 范晴2, 邓显文2, 罗思思2, 谢志勤2   

  1. 1. 广西大学动物科学技术学院, 广西南宁 530004;
    2. 广西壮族自治区兽医研究所, 广西畜禽疫苗新技术重点实验室, 广西南宁 530001
  • 收稿日期:2013-01-22 出版日期:2013-09-20 发布日期:2013-09-18
  • 通讯作者: 谢芝勋 E-mail:xiezhixun@126.com
  • 作者简介:张昆丽(1988-),女,云南人,硕士生,研究方向:禽病防治与病原分子生物学。
  • 基金资助:
    国家自然科学基金(31160512);广西科技项目(桂科重1222003-2-4,桂科攻10100014-5);广西特聘专家专项(2011B020)。

Development of a Real-time PCR Assay for Detection of Chicken IL-1β, IL-18 and Tumor Necrosis Factor α Genes

ZHANG Kun-li1, XIE Zhi-xun2, TENG Li-qiong2, LIU Jia-bo2, XIE Li-ji2, PANG Yao-shan2, FAN Qing2, DENG Xian-wen2, LUO Si-si2, XIE Zhi-qin2   

  1. 1. College of Veterinary Medicine, Guangxi University, Nanning 530004, China;
    2. Guangxi Key Laboratory of Animal Vaccines and New Technology, Guangxi Veterinary Research Institute, Nanning 530001, China
  • Received:2013-01-22 Online:2013-09-20 Published:2013-09-18

摘要: 本研究根据GenBank上公布的鸡白细胞介素1β(IL-1β)、白细胞介素18(IL-18)、肿瘤坏死因子α(TNF-α)和3-磷酸甘油醛脱氢酶(GAPDH)基因序列,在保守区域各设计合成1对特异性引物,以鸡胚成纤维细胞的cDNA为模板构建重组阳性质粒。采用梯度稀释重组标准品质粒DNA,构建SYBR GreenⅠ染料法荧光定量PCR标准曲线。结果显示,各基因的熔解曲线均呈单一熔解峰,IL-1β、IL-18、TNF-α和GAPDH的扩增效率分别是101.2%、95.6%、100.1%和98.2%,相关系数分别为0.9996、0.9998、0.9957和0.9989。敏感性试验结果表明,该检测方法在35个Ct值内可检测到100个模板拷贝数;重复性试验结果表明,组内变异系数均小于1.4%。本研究建立的实时荧光定量PCR检测方法可用于鸡IL-1β、IL-18和TNF-α mRNA的检测,为导致免疫抑制性疾病病毒感染宿主细胞后细胞因子表达的定量分析奠定基础。

关键词: 鸡; 白细胞介素1β; 白细胞介素18; 肿瘤坏死因子α; 实时荧光定量PCR

Abstract: In order to develop a SYBR GreenⅠ Real-time PCR assay for detection of chicken IL-1β,IL-18 and tumor necrosis factor-α (TNF-α) genes, four specific primer pairs were designed according to the chicken's IL-1β,IL-18, TNF-α and glyceraldehyde-3-phosphate dehydrogenase (GAPDH) gene sequences in GenBank. The four fragments were amplified by RT-PCR from chicken embryo fibroblasts, cloned and sequenced. The recombinant plasmids containing the target gene were constructed and used as the Real-time PCR standard templates. Real-time PCR assays based on SYBR GreenⅠfor detection of chicken IL-1β,IL-18, TNF-α and GAPDH were established. The results showed that each gene's melting curve also had a single peak,each gene's amplification efficiency was 101.2%, 95.6%, 100.1% and 98.2%, R2 was 0.9996,0.9998,0.9957 and 0.9989. Moreover,the assays were highly sensitive,the detection limit of 100 copies in 35 Ct and each gene's coefficient of variation less than 1.4 percent for intra-assay. This reliable Real-time PCR assay might be used for decting chicken's IL-1β,IL-18 and TNF-α mRNA expressing and provided the basis for quantitative analysis of cytokine expression in host cell after virus infect which cause immunosuppressive diseases.

Key words: chicken; IL-1β; IL-18; TNF-α; Real-time PCR

中图分类号: