期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Detection of Interaction of Binding Affinity of Aromatic Hydrocarbon Receptor to the Specific DNA by Exonuclease Protection Mediated PCR Assay
1
作者 孙晞 徐顺清 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2005年第1期104-106,共3页
A novel exonuclease protection mediated PCR assay (EPM-PCR) to detect the interaction of protein and DNA at a dioxin-responsive enhancer (DRE) upstream of the CYP1A1 gene in rat hepatic cytosol was established. A doub... A novel exonuclease protection mediated PCR assay (EPM-PCR) to detect the interaction of protein and DNA at a dioxin-responsive enhancer (DRE) upstream of the CYP1A1 gene in rat hepatic cytosol was established. A double-stranded DNA fragment containing two binding sites was designed and incubated with the aryl hydrocarbon receptor (AhR) transformed by 2,3,7,8-tetrachlorodibenzo-p dioxin (TCDD) to generate TCDD:AhR:DNA complex which could protect receptor-binding DNA against exonuclease Ⅲ (Exo Ⅲ) digestion. With ExoⅢ treatment, free DNAs were digested and receptor-bound DNAs remained that could be amplified by PCR. By agarose gel electrophoreses a clear band (285bp) was detected using TCDD-treated sample, while nothing with control samples. To detect transformed AhR-DRE complex, 2 fmol DNAs and 3 ug cytosol proteins were found to be sufficient in the experiment. Compared with gel retardation assay, this new method is more sensitive for monitoring the Ah receptor-enhancer interaction without radioactive pollution. 展开更多
关键词 aryl hydrocarbon receptor dioxin-responsive element exonuclease S1 nuclase PCR
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部