›› 2012, Vol. 39 ›› Issue (6): 65-68.

• 生物技术 • 上一篇    下一篇

荷斯坦奶牛乳腺β-防御素的差异表达

程兰玲, 曹贵方, 温世勇, 赵鹏伟, 关洪敏, 菅瑞珍   

  1. 内蒙古农业大学,动物胚胎与发育生物学研究室,内蒙古呼和浩特 010018
  • 收稿日期:2011-12-23 出版日期:2012-06-20 发布日期:2012-07-02
  • 通讯作者: 曹贵方(1963-),男,内蒙古人,教授,研究方向:基础兽医学。E-mail:guifangcao@126.com E-mail:guifangcao@126.com
  • 作者简介:程兰玲(1981-),女,新疆人,博士,研究方向:基础兽医学。
  • 基金资助:
    国家自然科学基金资助项目(30460093,31060328);内蒙古高等学校科学研究重点领域资助项目(ZL010144);转基因生物新品种培育重大专项(2008ZX08007-004)。

Differential Expression of β-defensins from Mammary Gland in Holstein Cow

CHENG Lan-ling, CAO Gui-fang, WEN Shi-yong, ZHAO Peng-wei, GUAN Hong-min, JIAN Rui-zhen   

  1. Histology and Developmental Biology, Inner Mongolia Agricultural University, Hohhot 010018, China
  • Received:2011-12-23 Online:2012-06-20 Published:2012-07-02

摘要: 本研究为证明荷斯坦奶牛乳腺β-防御素的表达,扩增出6种β-防御素序列进行氨基酸分析,结果发现,扩增的6个保守的半胱氨酸,其核酸序列与NCBI数据库序列进行BLAST比对,结果LAP、BNBD4同源性100%,BNBD5为99.6%,EBD为99.5%, BNBD7、TAP为98.5%;实时荧光定量PCR检测6种防御素的mRNA水平的表达,它们之间的表达量都有显著性差异(BNBD4与BNBD5除外),其中LAP表达量最多,BNBD7,EBD,BNBD5,BNBD4次之,TAP的表达量最低。

关键词: β-防御素; 差异表达; 荷斯坦奶牛; 乳腺炎

Abstract: The aim of the present study was to demonstrate the expression of β-defensins in the mammary glands of Holstein cows. Six kinds of β-defensins were amplified and compared the amino acid sequence. The results showed that all of them had six conserved cysteine residues. The nucleic acid sequence was compared with the NCBI database sequence, the homology result of LAP and BNBD4 were 100%, BNBD5 was 99.6%, EBD was 99.5%, BNBD7 and TAP were 98.5%. The mRNA expression of six kinds of defensins was detected by using Real-time quantitative PCR. The results showed that the relative expression of them were significant difference each other, but only the expression of BNBD4 and BNBD5 was no significant difference. The relative expression quantity of LAP was the highest, BNBD7, EBD, BNBD5, BNBD4 were middle, TAP was the lowest.

Key words: β-defensins; differential expression; Holstein cows; mastitis

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