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| Status |
Public on Dec 06, 2011 |
| Title |
Patterns of histone H3 Lysine 27 monomethylation and erythroid cell-type specific gene expression [expression] |
| Organism |
Homo sapiens |
| Experiment type |
Expression profiling by array
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| Summary |
ERYTHROID CELL-TYPE SPECIFIC GENE EXPRESSION
Post-translational histone modifications, acting alone or in a context-dependent manner, influence numerous cellular processes via their regulation of gene expression. Monomethylation of histone H3 lysine 27 (K27me1) is a poorly understood histone modification. Some reports describe depletion of K27Me1 at promoters and transcription start sites (TSS), implying its depletion at TSS is necessary for active transcription, while others have associated enrichment of H3K27me1 at TSS with increased levels of mRNA expression. Tissue- and gene-specific patterns of H3K27me1 enrichment and their correlation with gene expression were determined via chromatin immunoprecipitation on chip microarray (ChIP-chip) and human mRNA expression array analyses. Results from erythroid cells were compared to those in neural and muscle cells. H3K27me1 enrichment varied depending on levels of cell-type specific gene expression, with highest enrichment over transcriptionally active genes. Over individual genes, the highest levels of H3K27me1 enrichment were found over the gene bodies of highly expressed genes. In contrast to H3K4me3, which was highly enriched at the TSS of actively transcribing genes, H3K27me1 was selectively depleted at the TSS of actively transcribed genes. There was markedly decreased to no H3K27me1 enrichment in genes with low expression. At some locations, H3K27 monomethylation was also found to be associated with chromatin signatures of gene enhancers.
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| Overall design |
The gene expression profiles of three replicates of 4 human cell lines were obtained using Illumina microarrays.
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| Contributor(s) |
Steiner LA, Schulz VP, Maksimova Y, Wong C, Gallagher PG |
| Citation(s) |
21937433 |
| Submission date |
Sep 15, 2011 |
| Last update date |
Feb 15, 2013 |
| Contact name |
Vince Schulz |
| E-mail(s) |
vincent.schulz@yale.edu
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| Organization name |
Yale University
|
| Department |
Department of Pediatrics
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| Lab |
Gallagher
|
| Street address |
333 Cedar St. LMP 4085
|
| City |
New Haven |
| State/province |
CT |
| ZIP/Postal code |
06519 |
| Country |
USA |
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| Platforms (1) |
| GPL6102 |
Illumina human-6 v2.0 expression beadchip |
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| Samples (12)
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| This SubSeries is part of SuperSeries: |
| GSE32919 |
Patterns of histone H3 Lysine 27 monomethylation and erythroid cell-type specific gene expression |
|
| Relations |
| BioProject |
PRJNA154957 |
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