Acetylated histone H3 and H4 mark the upregulated LMP2A promoter of Epstein-Barr virus in lymphoid cells.
We analyzed the levels of acetylated histones and histone H3 dimethylated on lysine 4 (H3K4me2) at the LMP2A promoter (LMP2Ap) of Epstein-Barr virus in well-characterized type I and type III lymphoid cell line pairs and additionally in the nasopharyngeal carcinoma cell line C666-1 by using chromatin immunoprecipitation. We found that enhanced levels of acetylated histones marked the upregulated LMP2Ap in lymphoid cells. In contrast, in C666-1 cells, the highly DNA-methylated, inactive LMP2Ap was also enriched in acetylated histones and H3K4me2. Our results suggest that the combinatorial effects of DNA methylation, histone acetylation, and H3K4me2 modulate the activity of LMP2Ap.
Gerle
Borbala
B
Microbiological Research Group, National Center for Epidemiology, Pihenö u. 1, H-1529 Budapest, Hungary.
Koroknai
Anita
A
Fejer
György
G
Bakos
Agnes
A
Banati
Ferenc
F
Szenthe
Kalman
K
Wolf
Hans
H
Niller
Hans Helmut
HH
Minarovits
Janos
J
Salamon
Daniel
D
D000107:Acetylation; D045744:Cell Line, Tumor; D047369:Chromatin Immunoprecipitation; D004279:DNA, Viral / Q000737:chemistry*; D004854:Herpesvirus 4, Human / Q000737:chemistry / Q000502:physiology*; D006657:Histones / Q000032:analysis*; D006801:Humans; D008214:Lymphocytes / Q000737:chemistry / Q000821:virology*; D008745:Methylation; D008969:Molecular Sequence Data; D011401:Promoter Regions, Genetic; D011485:Protein Binding; D014763:Viral Matrix Proteins / Q000096:biosynthesis* / Q000235:genetics
D004279:DNA, Viral; C037662:EBV-associated membrane antigen, Epstein-Barr virus; D006657:Histones; D014763:Viral Matrix Proteins