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| Status |
Public on Mar 31, 2013 |
| Title |
A dynamic H3K27ac signature defines VEGF-regulated endothelial enhancers |
| Organism |
Homo sapiens |
| Experiment type |
Genome binding/occupancy profiling by high throughput sequencing
Expression profiling by high throughput sequencing
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| Summary |
Histone modifications are now well-established regulators of transcriptional programs that distinguish distinct cell states. However, the kinetics of histone modification and their role in mediating rapid, signal-responsive changes in gene expression have been little studied on a genome-wide scale. Vascular endothelial growth factor A (VEGF), a major regulator of angiogenesis, rapidly triggers changes in transcriptional activity of human umbilical vein endothelial cells (HUVECs). Here we used chromatin immunoprecipitation and high throughput sequencing (ChIP-seq) to measure genome-wide changes in histone H3 acetylation at lysine 27 (H3K27ac), a marker of active enhancers {Kharchenko et al., 2011, Nature, 471, 480-5;Zentner et al., 2011, Genome Res, 21, 1273-83;Rada-Iglesias et al., 2011, Nature, 470, 279-83; Creyghton et al., 2010, Proc Natl Acad Sci U S A, 107, 21931-6 }, after 0, 1, 4, and 12 hours of VEGF stimulation. We show that sites with greatest H3K27ac changes were associated tightly with p300, a histone acetyltransferase. This dynamic H3K27ac signature defined transcriptional elements that are functionally linked to angiogenesis, participate in rapid VEGF-stimulated changes in chromatin conformation, and mediate VEGF-induced transcriptional responses. Dynamic H3K27ac deposition required p300 activity and did not involve altered nucleosome occupancy. Our results demonstrate that capture of dynamic changes in H3K27ac provides a new approach to define the activity of functional genomic elements and implicate epigenetic modifications in rapid signal-responsive transcriptional regulation.
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| Overall design |
ChiP-seq timecourse of H3K27ac, ETS1, p300 chromatin occupancy, mRNA expression and DNA hypersensitivity of HUVEC cells stimulated with VEGF for 0, 1, 4, and 12 hours
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| Contributor(s) |
Zhang B, Day DS, Ho J, Song L, Cao J, Crawford GE, Park PJ, Pu WT |
| Citation(s) |
23547170 |
| Submission date |
Sep 26, 2012 |
| Last update date |
May 15, 2019 |
| Contact name |
Peter J Park |
| E-mail(s) |
peter_park@harvard.edu
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| Phone |
617-432-7373
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| Organization name |
Harvard Medical School
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| Department |
Center for Biomedical Informatics
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| Street address |
10 Shattuck St
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| City |
Boston |
| State/province |
MA |
| ZIP/Postal code |
02115 |
| Country |
USA |
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| Platforms (1) |
| GPL11154 |
Illumina HiSeq 2000 (Homo sapiens) |
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| Samples (32)
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| Relations |
| BioProject |
PRJNA176027 |
| SRA |
SRP015904 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSE41166_RAW.tar |
11.0 Gb |
(http)(custom) |
TAR (of BED) |
| GSE41166_adaptor.txt.gz |
86 b |
(ftp)(http) |
TXT |
| GSE41166_fpkm.csv.gz |
574.1 Kb |
(ftp)(http) |
CSV |
SRA Run Selector |
| Raw data are available in SRA |
| Processed data provided as supplementary file |
| Processed data are available on Series record |
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