›› 2010, Vol. 37 ›› Issue (9): 94-99.

• 生物技术 • 上一篇    下一篇

荧光定量PCR检测牛性别相关基因DAX1表达的标准质粒和标准曲线的构建

徐超1,2,杜卫华2,王宗礼1,余大为2,王栋2,郝海生2,赵学明2,朱化彬2   

  1. (1.中国农业科学院草原研究所,呼和浩特 010010; 2.中国农业科学院北京畜牧兽医研究所,北京 100193)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-09-20 发布日期:2010-09-20
  • 通讯作者: 王宗礼

Construction of Bovine Sex Related Genes DAX1 Standard Plasmid and Standard Curve by Real-time RT-PCR

XU Chao1,2,DU Wei-hua2, WANG Zong-li1,YU Da-wei2, WANG Dong2, HAO Hai-sheng2, 
ZHAO Xue-ming2, ZHU hua-bin2

  

  1. (1.Grassland Research Institute,Chinese Academy of Agricultural Sciences,Hohhot 010010,China;2.Institute of Animal Sciences,Chinese Academy of Agricultural Sciences,Beijing 100193,China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-09-20 Published:2010-09-20
  • Contact: WANG Zong-li

摘要: 本研究根据GenBank中登录的剂量敏感的性别反转-先天性肾上腺发育不良基因1(dosage-sensitive sex reversal, adrenal hypoplasia critical region, on chromosome X, gene 1,DAX1)设计引物,构建包含DAX1基因cDNA片段的质粒,作为中国荷斯坦牛DAX1基因mRNA定量检测的标准品,建立了DAX1基因mRNA表达实时荧光定量PCR检测方法。结果表明,该方法特异性好,检测灵敏度达102拷贝,线性范围为102~106拷贝,阈值循环数(Ct)与PCR体系中起始模板量的对数值间有着良好的线性关系(r=0.99975),扩增效率高(E=100%),可以作为检测牛DAX1基因mRNA定量检测方法。

关键词: 牛生殖嵴; DAX1; 荧光定量PCR; TaqMan探针; 标准曲线

Abstract: The primer was designed based on dosage-sensitive sex reversal adrenal hypoplasia critical region on chromosome X gene 1 (DAX1) according to the sequence which was submitted on GenBank. A recombinant plasmid contained cDNA fragment in DAX1 gene was constructed and used for the standard substance for quantitative detection of mRNA of the DAX1 gene in Holstein cows, a real-time PCR was developed for detection of DAX1 gene. The results revealed that this method had a good specificity, and the sensitivity was up to 102, range from 102 to 106. The cutoff value Ct had a good linear correlation with PCR samples. This method could be detected DAX1 gene in bovine quantitatively.

Key words: genital ridge; DAX1; real-time quantitative PCR; TaqMan probe; standard curve

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