Protein-DNA interaction and CpG methylation at repvIL-10p of latent Epstein-Barr virus genomes in lymphoid cell lines

作者：Niller HH^*; Salamon D; Takacs M; Uhlig J; Wolf H; Minarovits J

来源：Biological Chemistry, 2001, 382(10): 1411-1419.

DOI：10.1515/BC.2001.174

• bisulfite sequencing
• dimethyl sulfate
• genomic footprints
• latency
• replication

The viral interleukin-10 promoter (vIL-10p), overlapping the rep* element in the Epstein-Barr virus (EBV) genome, is a promoter element active mostly in the late phase of the lytic cycle and immediately upon infection of B cells. rep* was, through transfection experiments with small plasmids, characterised as a cis element supporting oriP replicative function. In this study, in vivo protein binding and CpG methylation at repvIL-10p were analysed in five cell lines that harbour strictly latent EBV genomes. Contrary to the invariably unmethylated dyad symmetry element (DS) of oriP, repvIL-10p was highly methylated and showed only traces of protein binding in all examined cell lines. This result is in agreement with vIL-10p being an inactive promoter of EBV genomes, and makes it less likely that rep* functions as a replicative-element of latent EBV genomes.

• 出版日期2001-10
• 单位河北医科大学