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首页> 外文期刊>Comparative biochemistry and physiology, Part B. Biochemistry & molecular biology >Functional analysis of the chicken PPARΓ gene 5′-flanking region and C/EBPα-mediated gene regulation
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Functional analysis of the chicken PPARΓ gene 5′-flanking region and C/EBPα-mediated gene regulation

机译:鸡PPARΓ基因5'侧翼区功能分析和C /EBPα介导的基因调控

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摘要

Peroxisome proliferator-activated receptor-Γ (PPARΓ) and CCAAT/enhancer binding protein-α (C/EBPα) are the master regulators of adipogenesis. The regulatory mechanism of PPARΓ and C/EBPα gene expression is clear in mammals, however, little is known in chicken. The aim of the present study was to characterize chicken PPARΓ promoter and investigate whether PPARΓ could be regulated by C/EBPα in chickens. A 2-kb nucleotide sequence upstream of the start codon of chicken PPARΓ gene was cloned and characterized by using bioinformatics and experimental approaches. This 2-kb promoter region exhibited strong promoter activity in DF1 cells. The reporter gene assay showed that the chicken C/EBPα could activate PPARΓ gene promoter. Further study by electrophoretic mobility shift assay and mutational analysis revealed that the chicken C/EBPα could directly bind to and regulate the PPARΓ gene promoter. Our results demonstrate that PPARΓ can be directly regulated by C/EBPα in chickens.
机译:过氧化物酶体增殖物激活受体-Γ(PPARΓ)和CCAAT /增强子结合蛋白-α(C /EBPα)是脂肪形成的主要调节剂。在哺乳动物中,PPARγ和C /EBPα基因表达的调节机制是清楚的,但是在鸡中知之甚少。本研究的目的是表征鸡的PPARΓ启动子,并研究PPARΓ是否可以被鸡中的C /EBPα调节。利用生物信息学和实验方法,克隆并鉴定了鸡PPARΓ基因起始密码子上游的一个2kb核苷酸序列。该2-kb启动子区域在DF1细胞中显示出强启动子活性。报告基因检测表明,鸡C /EBPα可以激活PPARΓ基因启动子。电泳迁移率变动分析和突变分析的进一步研究表明,鸡C /EBPα可以直接结合并调节PPARΓ基因启动子。我们的结果表明,PPARΓ可以直接受鸡中C /EBPα的调控。

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