Developmentally dynamic histone acetylation pattern of a tissue-specific chromatin domain.
We have defined the histone acetylation pattern of the endogenous murine beta-globin domain, which contains the erythroidspecific beta-globin genes. The beta-globin locus control region (LCR) and transcriptionally active promoters were enriched in acetylated histones in fetal liver relative to fetal brain, whereas the inactive promoters were hypoacetylated. In contrast, the LCR and both active and inactive promoters were hyperacetylated in yolk sac. Hypersensitive site two of the LCR was also hyperacetylated in murine embryonic stem cells, whereas beta-globin promoters were hypoacetylated. Thus, the acetylation pattern varied at different developmental stages. Histone deacetylase inhibition selectively increased acetylation at a hypoacetylated promoter in fetal liver, suggesting that active deacetylation contributes to silencing of promoters. We propose that dynamic histone acetylation and deacetylation play an important role in the developmental control of beta-globin gene expression.
Forsberg
E C
EC
Department of Pharmacology, Molecular and Cellular Pharmacology Program, and Department of Anatomy, University of Wisconsin Medical School, 387 Medical Sciences Center, 1300 University Avenue, Madison, WI 53706, USA.
Downs
K M
KM
Christensen
H M
HM
Im
H
H
Nuzzi
P A
PA
Bresnick
E H
EH
D000107:Acetylation; D000123:Acetyltransferases / Q000378:metabolism; D000818:Animals; D001665:Binding Sites; D002843:Chromatin; D005914:Globins / Q000235:genetics*; D051548:Histone Acetyltransferases; D006657:Histones / Q000378:metabolism*; D004915:Leukemia, Erythroblastic, Acute; D008099:Liver / Q000196:embryology; D019901:Locus Control Region; D051379:Mice; D011401:Promoter Regions, Genetic; D029701:Saccharomyces cerevisiae Proteins; D014407:Tumor Cells, Cultured
D002843:Chromatin; D006657:Histones; D029701:Saccharomyces cerevisiae Proteins; D005914:Globins; D000123:Acetyltransferases; D051548:Histone Acetyltransferases