畜牧兽医学报 ›› 2008, Vol. 39 ›› Issue (11): 1466-1469.doi:

• 遗传繁育 • 上一篇    下一篇

鸡L-FABP抗血清制备及组织表达特性分析

石慧,王启贵,王宇祥,王宁,李辉*   

  1. 东北农业大学动物科学技术学院,哈尔滨 150030
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-11-24 发布日期:2008-11-24
  • 通讯作者: 李辉

Preparation of Antiserums against Chicken Liver-type Fatty Acid Binding Protein (L-FABP) and Tissue Expression Analyses of L-FABP

SHI Hui, WANG Qi-gui, WANG Yu-xiang, WANG Ning, LI Hui*   

  1. College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-11-24 Published:2008-11-24

摘要: 为制备鸡肝脏型脂肪酸结合蛋白(L-FABP)的多克隆抗血清,并分析L-FABP的组织表达特性,利用RT-PCR扩增L-FABP基因,构建鸡L-FABP基因的GST融合蛋白表达质粒pGEX-4T/L-FABP。将重组表达质粒转化大肠杆菌BL21,IPTG诱导产生GST/L-FABP融合蛋白,用亲和层析纯化目的蛋白,将纯化的GST/L-FABP融合蛋白免疫家兔制备抗血清,并利用此抗血清分析鸡L-FABP基因的组织表达特性。诱导得到了1个40 ku(14 ku L-FABP+ 26 ku GST)的融合蛋白,获得效价较高、特异性强的鸡L-FABP的抗血清。鸡L-FABP的组织表达特性研究结果表明,该基因在肝脏和小肠组织中有较高表达,但在心脏、脂肪、肌肉、肌胃、脾、肺和肾中没有检测到表达信号。

Abstract: The aim of this study was to prepare the antiserums against chicken livertype fatty acid binding protein (L-FABP) and analyze expression characteristics of L-FABP. Specific primers were designed to amplify the gene of chicken L-FABP by RT-PCR. The L-FABP gene was then inserted into pGEX4T-1 vector and expressed in Escherichia coli BL21 (DE3). The protein was purified by Glutathione Sepharose 4B affinity chromatography and the antiserums against L-FABP was produced by immunizing rabbits. The tissue expression characteristics of L-FABP gene were determined by Western blot analysis. The results showed that a 40 ku (14 ku L-FABP + 26 ku GST) fusion protein was induced; furthermore, high titer antiserums against L-FABP was obtained. The tissue expression analysis showed that L-FABP was highly expressed in liver and small intestine but no hybridization signal was detected in heart, fat, muscle, muscle stomach, spleen, lung and kidney.