遗传 ›› 2006, Vol. 28 ›› Issue (1): 31-35.

• 研究报告 • 上一篇    下一篇

牛乳腺核基质附着区的克隆及其功能研究

杨瑞锋 舒建洪 李志艳 刘金龙 张涌*   

  1. (西北农林科技大学生物工程研究所 杨凌,712100)
  • 收稿日期:2004-10-10 修回日期:2005-01-06 出版日期:2006-01-10 发布日期:2006-01-10
  • 通讯作者: 杨瑞锋

Molecular cloning and functional analysis of Bovine mammary gland matrix attachment regions

YANG Rui-Feng, SHU Jian-Hong, LI Zhi-Yan, LIU Jin-Long, ZHANG Yong   

  1. (Institute of Bio-Engineering, Northwest A & F University,Yang ling, Shaanxi 712100,China)
  • Received:2004-10-10 Revised:2005-01-06 Online:2006-01-10 Published:2006-01-10

摘要: 从奶牛的全血中提取基因组DNA,参照GenBank已有序列,通过Primer5.0和Vector 7.0辅助设计一对引物,克隆了牛乳腺核基质附着区(BMRs)。利用生物学软件对其进行初步分析后,TA克隆于pMD-18T vector上。上下游引物5′端分别引入Kpn2Ⅰ和XhoⅠ酶切位点,将所得的BMRs克隆到pEGFP-C1的报告基因下游,构建成表达载体BE,脂质体法转染牛耳成纤维细胞。以转染pEGFP-C1的牛耳成纤维细胞作为对照,发现所克隆的BMRs功能明显,在消除位置效应、增强报告基因表达方面具有一定的作用。

关键词: 核基质附着区, 克隆, 细胞表达

Abstract: The bovine genomic DNA was extracted from bovine blood, then bovine mammary gland matrix attachment region (BMARs) was cloned using a pair of primers, which were designed based on the related sequences in GenBank through bio-software Primer5.0 and Vector7.0. Upon preliminary analysis with bio-software, BMARs was TA cloned into PMD-18 T vector. By means of adding Kpn2Ⅰand XhoⅠto 5’upstream of sensitive and antisensitive primers respectively, expressing vector BE was constructed after BMAR was cloned into the downstream of the reporter gene in pEGFP-C1. Bovine ear fibroblast cells were transfected by expressing vector BE with Lipofectamine.Compared with control bovine ear fibroblast cells transfected with pEGFP-C1, the effect of cloned BMR was apparent in dispelling position effect and enhancing gene expression.

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