目的 检测肺腺癌A549细胞内的转录因子激活蛋白-1(AP-1)与p53基因调控区的结合情况。方法采用染色质免疫沉淀技术,用c-jun特异性抗体沉淀DNA,聚合酶链反应(PCR)技术检测p53基因5’端特异性序列。结果在c-jun特异性抗体免疫沉淀的DNA片段中扩增出p535’端的特异性序列。结论AP-1在A549细胞内结合于p53基因的调控区,参与该基因的表达调控。
Objective To detect and verify activator protein-1 (,AP-1) binding to p53 gene promoter region in A549 cell lines in vitro. Methods AP-1 binding to p53 gene promoter region was detected by chromatin immunoprecipitation (CHIP) assay using c-jun specific antibody, and PCR amplified its gene specific DNA fragment. Results The p53 gene specific fragment was found in the DNA fragment immunoprecipitated by c-jun antibody, Conclusion AP-1 binds to p53 gene promoter region in A549 cells,and regulates its expression,