中文摘要：

L-FABP是脂肪酸结合蛋白家族重要的成员.研究发现L-FABP在不饱和脂肪酸、饱和脂肪酸、胆固醇、胆汁酸等转运过程中扮演重要角色.目前,对哺乳动物L-FABP的活性调控机制的研究已经取得了一定进展,但在禽类上的相关报道还比较少见.为探讨鸡L-FABP基因的表达调控机制,本研究利用报告基因方法在人肝癌细胞系（HEGP2）中研究C/EBPα、KLF2、KLF3、KLF7、PARα基因对鸡L-FABP基因启动子活性的影响.结果表明：C/EBPα显著抑制了鸡L-FABP基因的表达,KLF2、KLF3、KLF7、PPARα基因显著促进了L-FA BP基因的表达,这些结果为深入研究鸡L-FABP基因表达调控机制奠定了基础.

英文摘要：

As an important member of the fatty acid binding protein （FABP） family,L-FABP plays important roles in the translocation of saturated fatty acid,unsaturated fatty acid,cholesterol,bile acid,ect.In mammals,certain progresses were made on the regulatory mechanism of L-FABP transcriptional activities.However,it is rarely reported in avian species.In order to investigate the regulatory mechanism of L-FABP gene transcription in chicken,we cotransfected C/EBPα,KLF2,KLF3,KLF7,PPARα and examined their individual effects on L-FABP promoter activity,using a routine Luciferase report gene method in the human hepatocellular carcinoma cell line,HEPG2.The expression of L-FABP was significantly repressed by C/EBPα,but significantly promoted by KLF2,KLF3,KLF7 and PPARα,respectively.These results will provide a foundation to stimulate further research on the regulatory mechanism and function of chicken L-FABP gene.