DNA-protein interaction at erythroid important regulatory elements of MEL cells bv in vivo footprinting  

作　　者：Jl Xinjun, LIU Depei, XU Dongdong, LI Lei, WANG Jing & LIANG ZhiquanNational Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Faculty of Basic Medical Sciences, Peking Union Medical College, Beijing 100005, China 

出　　处：《Chinese Science Bulletin》2000年第12期1101-1108,共8页

摘　　要：Using ligation-mediated PCR method to study the status of DNA-protein interaction at hypersensitive site 2 of locus control Region and βmaj promoter of MEL cell line before and after induction, MEL cell has been cultured and induced to differentiation by Hemin and DMSO, then the live cells have been treated with dimethyl sulfate. Ligation mediated PCR has been carried out following the chemical cleavage. The results demonstrate that before and after induction, the status of DNA-protein interaction at both hypersensitive site 2 and βmaj promoter change significantly, indicating that distal regulatory elements (locus control region, hypersensitive sites) as well as proximal regulatory elements (promoter, enhancer) of β-globin gene cluster participate in the regulation of developmental specificity.Using ligation-mediated PCR method to study the status of DNA-protein interaction at hypersensitive site 2 of locus control Region and βmaj promoter of MEL cell line before and after induction, MEL cell has been cultured and induced to differentiation by Hemin and DMSO, then the live cells have been treated with dimethyl sulfate. Ligation mediated PCR has been carried out following the chemical cleavage. The results demonstrate that before and after induction, the status of DNA-protein interaction at both hypersensitive site 2 and βmaj promoter change significantly, indicating that distal regulatory elements (locus control region, hypersensitive sites) as well as proximal regulatory elements (promoter, enhancer) of β-globin gene cluster participate in the regulation of developmental specificity.

关 键 词：Β-GLOBIN GENE HS LM-PCR in VIVO FOOTPRINTING MEL cell line. 

分 类 号：Q26[生物学—细胞生物学]