Retinoic acid and histone deacetylases regulate epigenetic changes in embryonic stem cells.

TitleRetinoic acid and histone deacetylases regulate epigenetic changes in embryonic stem cells.
Publication TypeJournal Article
Year of Publication2014
AuthorsUrvalek AM, Gudas LJ
JournalJ Biol Chem
Volume289
Issue28
Pagination19519-30
Date Published2014 Jul 11
ISSN1083-351X
KeywordsAnimals, Antineoplastic Agents, Cell Differentiation, Cytochrome P-450 Enzyme System, Embryonic Stem Cells, Epigenesis, Genetic, HEK293 Cells, Histone Deacetylases, Histones, Homeodomain Proteins, Humans, Mice, Receptors, Retinoic Acid, Response Elements, Retinoic Acid 4-Hydroxylase, Transcription Factors, Tretinoin
Abstract

All-trans-retinoic acid (RA) is a vitamin A metabolite that plays major roles in regulating stem cell differentiation and development. RA is the ligand of the retinoic acid receptor (RAR) family of transcription factors, which interact with retinoic acid response elements (RAREs) within target gene proximal promoters and enhancers. Although RA-mediated gene activation is well understood, less is known about the mechanisms for repression at RA-regulated genes. Using chromatin immunoprecipitation experiments, we show that in embryonic stem cells in the absence of RA, histone deacetylases (HDACs) differentially bind to various RAREs in proximal promoters or enhancer regions of RA-regulated genes; HDAC1, HDAC2, and HDAC3 bind at RAREs in the Hoxa1 and Cyp26a1 gene regulatory regions, whereas only HDAC1 binds at the RARĪ²2 RARE. shRNA knockdown of HDAC1, HDAC2, or HDAC3 differentially increases the deposition of the histone 3 lysine 27 acetylation (H3K27ac) epigenetic mark associated with increases in these three transcripts. Importantly, RA treatment differentially mediates the removal of HDACs from the Hoxa1, Cyp26a1, and RARĪ²2 genes and promotes the deposition of the H3K27ac mark at these genes. Overall, we show that HDACs differentially bind to RA-regulated genes to control key epigenetic marks involved in stem cell differentiation.

DOI10.1074/jbc.M114.556555
Alternate JournalJ. Biol. Chem.
PubMed ID24821725
PubMed Central IDPMC4094062
Grant ListT32 CA062948 / CA / NCI NIH HHS / United States
T32CA062948 / CA / NCI NIH HHS / United States
R01 AA018332 / AA / NIAAA NIH HHS / United States
F32-AA021045 / AA / NIAAA NIH HHS / United States
F32 AA021045 / AA / NIAAA NIH HHS / United States
R01CA43778 / CA / NCI NIH HHS / United States
R01 CA043796 / CA / NCI NIH HHS / United States