Transitions in Histone Acetylation Reveal Boundaries of Three Separately Regulated Neighboring Loci
Overview
Molecular Biology
Affiliations
We have studied developmentally regulated patterns of histone acetylation at high resolution across approximately 54 kb of DNA containing three independently regulated but neighboring genetic loci. These include a folate receptor gene, a 16 kb condensed chromatin region, the chicken beta-globin domain and an adjacent olfactory receptor gene. Within these regions the relative levels of acetylation appear to fall into three classes. The condensed chromatin region maintains the lowest acetylation at every developmental stage. Genes that are inactive show similarly low levels, but activation results in a dramatic increase in acetylation. The highest levels of acetylation are seen at regulatory sites upstream of the genes. These patterns imply the action of more than one class of acetylation. Notably, there is a very strong constitutive focus of hyperacetylation at the 5' insulator element separating the globin locus from the folate receptor region, which suggests that this insulator element may harbor a high concentration of histone acetylases.
Measuring the buffering capacity of gene silencing in .
Wu K, Dhillon N, Du K, Kamakaka R Proc Natl Acad Sci U S A. 2021; 118(49).
PMID: 34857629 PMC: 8670432. DOI: 10.1073/pnas.2111841118.
Brossas C, Valton A, Venev S, Chilaka S, Counillon A, Laurent M EMBO J. 2020; 39(21):e99520.
PMID: 32935369 PMC: 7604622. DOI: 10.15252/embj.201899520.
BAFF/APRIL System Is Functional in B-Cell Acute Lymphoblastic Leukemia in a Disease Subtype Manner.
Sevdali E, Katsantoni E, Smulski C, Moschovi M, Palassopoulou M, Kolokotsa E Front Oncol. 2019; 9:594.
PMID: 31380267 PMC: 6657364. DOI: 10.3389/fonc.2019.00594.
The chicken erythrocyte epigenome.
Jahan S, Xu W, He S, Gonzalez C, Delcuve G, Davie J Epigenetics Chromatin. 2016; 9:19.
PMID: 27226810 PMC: 4879735. DOI: 10.1186/s13072-016-0068-2.
mTOR-Dependent and Independent Survival Signaling by PI3K in B Lymphocytes.
Kaileh M, Vazquez E, MacFarlane 4th A, Campbell K, Kurosaki T, Siebenlist U PLoS One. 2016; 11(1):e0146955.
PMID: 26785352 PMC: 4718598. DOI: 10.1371/journal.pone.0146955.